@@ -2219,6 +2219,7 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
#ifdef IP_FREEBIND
case IP_FREEBIND:
#endif
+ case IP_MULTICAST_IF:
case IP_MULTICAST_TTL:
case IP_MULTICAST_LOOP:
val = 0;
@@ -2265,6 +2266,7 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
case IPV6_V6ONLY:
case IPV6_RECVPKTINFO:
case IPV6_UNICAST_HOPS:
+ case IPV6_MULTICAST_IF:
case IPV6_MULTICAST_HOPS:
case IPV6_MULTICAST_LOOP:
case IPV6_RECVERR:
@@ -2891,6 +2893,7 @@ get_timeout:
#ifdef IP_FREEBIND
case IP_FREEBIND:
#endif
+ case IP_MULTICAST_IF:
case IP_MULTICAST_TTL:
case IP_MULTICAST_LOOP:
if (get_user_u32(len, optlen))
@@ -2926,6 +2929,7 @@ get_timeout:
case IPV6_V6ONLY:
case IPV6_RECVPKTINFO:
case IPV6_UNICAST_HOPS:
+ case IPV6_MULTICAST_IF:
case IPV6_MULTICAST_HOPS:
case IPV6_MULTICAST_LOOP:
case IPV6_RECVERR:
new file mode 100644
@@ -0,0 +1,13305 @@
+/*
+ * Linux syscalls
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#define _ATFILE_SOURCE
+#include "qemu/osdep.h"
+#include "qemu/cutils.h"
+#include "qemu/path.h"
+#include "qemu/memfd.h"
+#include "qemu/queue.h"
+#include <elf.h>
+#include <endian.h>
+#include <grp.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+#include <sys/file.h>
+#include <sys/fsuid.h>
+#include <sys/personality.h>
+#include <sys/prctl.h>
+#include <sys/resource.h>
+#include <sys/swap.h>
+#include <linux/capability.h>
+#include <sched.h>
+#include <sys/timex.h>
+#include <sys/socket.h>
+#include <linux/sockios.h>
+#include <sys/un.h>
+#include <sys/uio.h>
+#include <poll.h>
+#include <sys/times.h>
+#include <sys/shm.h>
+#include <sys/sem.h>
+#include <sys/statfs.h>
+#include <utime.h>
+#include <sys/sysinfo.h>
+#include <sys/signalfd.h>
+//#include <sys/user.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <linux/wireless.h>
+#include <linux/icmp.h>
+#include <linux/icmpv6.h>
+#include <linux/if_tun.h>
+#include <linux/in6.h>
+#include <linux/errqueue.h>
+#include <linux/random.h>
+#ifdef CONFIG_TIMERFD
+#include <sys/timerfd.h>
+#endif
+#ifdef CONFIG_EVENTFD
+#include <sys/eventfd.h>
+#endif
+#ifdef CONFIG_EPOLL
+#include <sys/epoll.h>
+#endif
+#ifdef CONFIG_ATTR
+#include "qemu/xattr.h"
+#endif
+#ifdef CONFIG_SENDFILE
+#include <sys/sendfile.h>
+#endif
+#ifdef HAVE_SYS_KCOV_H
+#include <sys/kcov.h>
+#endif
+
+#define termios host_termios
+#define winsize host_winsize
+#define termio host_termio
+#define sgttyb host_sgttyb /* same as target */
+#define tchars host_tchars /* same as target */
+#define ltchars host_ltchars /* same as target */
+
+#include <linux/termios.h>
+#include <linux/unistd.h>
+#include <linux/cdrom.h>
+#include <linux/hdreg.h>
+#include <linux/soundcard.h>
+#include <linux/kd.h>
+#include <linux/mtio.h>
+#include <linux/fs.h>
+#include <linux/fd.h>
+#if defined(CONFIG_FIEMAP)
+#include <linux/fiemap.h>
+#endif
+#include <linux/fb.h>
+#if defined(CONFIG_USBFS)
+#include <linux/usbdevice_fs.h>
+#include <linux/usb/ch9.h>
+#endif
+#include <linux/vt.h>
+#include <linux/dm-ioctl.h>
+#include <linux/reboot.h>
+#include <linux/route.h>
+#include <linux/filter.h>
+#include <linux/blkpg.h>
+#include <netpacket/packet.h>
+#include <linux/netlink.h>
+#include <linux/if_alg.h>
+#include <linux/rtc.h>
+#include <sound/asound.h>
+#ifdef HAVE_BTRFS_H
+#include <linux/btrfs.h>
+#endif
+#ifdef HAVE_DRM_H
+#include <libdrm/drm.h>
+#include <libdrm/i915_drm.h>
+#endif
+#include "linux_loop.h"
+#include "uname.h"
+
+#include "qemu.h"
+#include "qemu/guest-random.h"
+#include "qemu/selfmap.h"
+#include "user/syscall-trace.h"
+#include "qapi/error.h"
+#include "fd-trans.h"
+#include "tcg/tcg.h"
+
+#ifndef CLONE_IO
+#define CLONE_IO 0x80000000 /* Clone io context */
+#endif
+
+/* We can't directly call the host clone syscall, because this will
+ * badly confuse libc (breaking mutexes, for example). So we must
+ * divide clone flags into:
+ * * flag combinations that look like pthread_create()
+ * * flag combinations that look like fork()
+ * * flags we can implement within QEMU itself
+ * * flags we can't support and will return an error for
+ */
+/* For thread creation, all these flags must be present; for
+ * fork, none must be present.
+ */
+#define CLONE_THREAD_FLAGS \
+ (CLONE_VM | CLONE_FS | CLONE_FILES | \
+ CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
+
+/* These flags are ignored:
+ * CLONE_DETACHED is now ignored by the kernel;
+ * CLONE_IO is just an optimisation hint to the I/O scheduler
+ */
+#define CLONE_IGNORED_FLAGS \
+ (CLONE_DETACHED | CLONE_IO)
+
+/* Flags for fork which we can implement within QEMU itself */
+#define CLONE_OPTIONAL_FORK_FLAGS \
+ (CLONE_SETTLS | CLONE_PARENT_SETTID | \
+ CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
+
+/* Flags for thread creation which we can implement within QEMU itself */
+#define CLONE_OPTIONAL_THREAD_FLAGS \
+ (CLONE_SETTLS | CLONE_PARENT_SETTID | \
+ CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
+
+#define CLONE_INVALID_FORK_FLAGS \
+ (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
+
+#define CLONE_INVALID_THREAD_FLAGS \
+ (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
+ CLONE_IGNORED_FLAGS))
+
+/* CLONE_VFORK is special cased early in do_fork(). The other flag bits
+ * have almost all been allocated. We cannot support any of
+ * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
+ * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
+ * The checks against the invalid thread masks above will catch these.
+ * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
+ */
+
+/* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
+ * once. This exercises the codepaths for restart.
+ */
+//#define DEBUG_ERESTARTSYS
+
+//#include <linux/msdos_fs.h>
+#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
+#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
+
+#undef _syscall0
+#undef _syscall1
+#undef _syscall2
+#undef _syscall3
+#undef _syscall4
+#undef _syscall5
+#undef _syscall6
+
+#define _syscall0(type,name) \
+static type name (void) \
+{ \
+ return syscall(__NR_##name); \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+static type name (type1 arg1) \
+{ \
+ return syscall(__NR_##name, arg1); \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+static type name (type1 arg1,type2 arg2) \
+{ \
+ return syscall(__NR_##name, arg1, arg2); \
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+static type name (type1 arg1,type2 arg2,type3 arg3) \
+{ \
+ return syscall(__NR_##name, arg1, arg2, arg3); \
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
+{ \
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
+}
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
+}
+
+
+#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5,type6,arg6) \
+static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
+ type6 arg6) \
+{ \
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
+}
+
+
+#define __NR_sys_uname __NR_uname
+#define __NR_sys_getcwd1 __NR_getcwd
+#define __NR_sys_getdents __NR_getdents
+#define __NR_sys_getdents64 __NR_getdents64
+#define __NR_sys_getpriority __NR_getpriority
+#define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
+#define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
+#define __NR_sys_syslog __NR_syslog
+#if defined(__NR_futex)
+# define __NR_sys_futex __NR_futex
+#endif
+#if defined(__NR_futex_time64)
+# define __NR_sys_futex_time64 __NR_futex_time64
+#endif
+#define __NR_sys_inotify_init __NR_inotify_init
+#define __NR_sys_inotify_add_watch __NR_inotify_add_watch
+#define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
+#define __NR_sys_statx __NR_statx
+
+#if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
+#define __NR__llseek __NR_lseek
+#endif
+
+/* Newer kernel ports have llseek() instead of _llseek() */
+#if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
+#define TARGET_NR__llseek TARGET_NR_llseek
+#endif
+
+/* some platforms need to mask more bits than just TARGET_O_NONBLOCK */
+#ifndef TARGET_O_NONBLOCK_MASK
+#define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK
+#endif
+
+#define __NR_sys_gettid __NR_gettid
+_syscall0(int, sys_gettid)
+
+/* For the 64-bit guest on 32-bit host case we must emulate
+ * getdents using getdents64, because otherwise the host
+ * might hand us back more dirent records than we can fit
+ * into the guest buffer after structure format conversion.
+ * Otherwise we emulate getdents with getdents if the host has it.
+ */
+#if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
+#define EMULATE_GETDENTS_WITH_GETDENTS
+#endif
+
+#if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
+_syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
+#endif
+#if (defined(TARGET_NR_getdents) && \
+ !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
+ (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
+_syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
+#endif
+#if defined(TARGET_NR__llseek) && defined(__NR_llseek)
+_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
+ loff_t *, res, uint, wh);
+#endif
+_syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
+_syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
+ siginfo_t *, uinfo)
+_syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
+#ifdef __NR_exit_group
+_syscall1(int,exit_group,int,error_code)
+#endif
+#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
+_syscall1(int,set_tid_address,int *,tidptr)
+#endif
+#if defined(__NR_futex)
+_syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
+ const struct timespec *,timeout,int *,uaddr2,int,val3)
+#endif
+#if defined(__NR_futex_time64)
+_syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
+ const struct timespec *,timeout,int *,uaddr2,int,val3)
+#endif
+#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
+_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
+ unsigned long *, user_mask_ptr);
+#define __NR_sys_sched_setaffinity __NR_sched_setaffinity
+_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
+ unsigned long *, user_mask_ptr);
+#define __NR_sys_getcpu __NR_getcpu
+_syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
+_syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
+ void *, arg);
+_syscall2(int, capget, struct __user_cap_header_struct *, header,
+ struct __user_cap_data_struct *, data);
+_syscall2(int, capset, struct __user_cap_header_struct *, header,
+ struct __user_cap_data_struct *, data);
+#if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
+_syscall2(int, ioprio_get, int, which, int, who)
+#endif
+#if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
+_syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
+#endif
+#if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
+_syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
+#endif
+
+#if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
+_syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
+ unsigned long, idx1, unsigned long, idx2)
+#endif
+
+/*
+ * It is assumed that struct statx is architecture independent.
+ */
+#if defined(TARGET_NR_statx) && defined(__NR_statx)
+_syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
+ unsigned int, mask, struct target_statx *, statxbuf)
+#endif
+#if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
+_syscall2(int, membarrier, int, cmd, int, flags)
+#endif
+
+static bitmask_transtbl fcntl_flags_tbl[] = {
+ { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
+ { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
+ { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
+ { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
+ { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
+ { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
+ { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
+ { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
+ { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
+ { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
+ { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
+ { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
+ { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
+#if defined(O_DIRECT)
+ { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
+#endif
+#if defined(O_NOATIME)
+ { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
+#endif
+#if defined(O_CLOEXEC)
+ { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
+#endif
+#if defined(O_PATH)
+ { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
+#endif
+#if defined(O_TMPFILE)
+ { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
+#endif
+ /* Don't terminate the list prematurely on 64-bit host+guest. */
+#if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
+ { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
+#endif
+ { 0, 0, 0, 0 }
+};
+
+_syscall2(int, sys_getcwd1, char *, buf, size_t, size)
+
+#if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64)
+#if defined(__NR_utimensat)
+#define __NR_sys_utimensat __NR_utimensat
+_syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
+ const struct timespec *,tsp,int,flags)
+#else
+static int sys_utimensat(int dirfd, const char *pathname,
+ const struct timespec times[2], int flags)
+{
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+#endif /* TARGET_NR_utimensat */
+
+#ifdef TARGET_NR_renameat2
+#if defined(__NR_renameat2)
+#define __NR_sys_renameat2 __NR_renameat2
+_syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
+ const char *, new, unsigned int, flags)
+#else
+static int sys_renameat2(int oldfd, const char *old,
+ int newfd, const char *new, int flags)
+{
+ if (flags == 0) {
+ return renameat(oldfd, old, newfd, new);
+ }
+ errno = ENOSYS;
+ return -1;
+}
+#endif
+#endif /* TARGET_NR_renameat2 */
+
+#ifdef CONFIG_INOTIFY
+#include <sys/inotify.h>
+
+#if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
+static int sys_inotify_init(void)
+{
+ return (inotify_init());
+}
+#endif
+#if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
+static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
+{
+ return (inotify_add_watch(fd, pathname, mask));
+}
+#endif
+#if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
+static int sys_inotify_rm_watch(int fd, int32_t wd)
+{
+ return (inotify_rm_watch(fd, wd));
+}
+#endif
+#ifdef CONFIG_INOTIFY1
+#if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
+static int sys_inotify_init1(int flags)
+{
+ return (inotify_init1(flags));
+}
+#endif
+#endif
+#else
+/* Userspace can usually survive runtime without inotify */
+#undef TARGET_NR_inotify_init
+#undef TARGET_NR_inotify_init1
+#undef TARGET_NR_inotify_add_watch
+#undef TARGET_NR_inotify_rm_watch
+#endif /* CONFIG_INOTIFY */
+
+#if defined(TARGET_NR_prlimit64)
+#ifndef __NR_prlimit64
+# define __NR_prlimit64 -1
+#endif
+#define __NR_sys_prlimit64 __NR_prlimit64
+/* The glibc rlimit structure may not be that used by the underlying syscall */
+struct host_rlimit64 {
+ uint64_t rlim_cur;
+ uint64_t rlim_max;
+};
+_syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
+ const struct host_rlimit64 *, new_limit,
+ struct host_rlimit64 *, old_limit)
+#endif
+
+
+#if defined(TARGET_NR_timer_create)
+/* Maximum of 32 active POSIX timers allowed at any one time. */
+static timer_t g_posix_timers[32] = { 0, } ;
+
+static inline int next_free_host_timer(void)
+{
+ int k ;
+ /* FIXME: Does finding the next free slot require a lock? */
+ for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
+ if (g_posix_timers[k] == 0) {
+ g_posix_timers[k] = (timer_t) 1;
+ return k;
+ }
+ }
+ return -1;
+}
+#endif
+
+#define ERRNO_TABLE_SIZE 1200
+
+/* target_to_host_errno_table[] is initialized from
+ * host_to_target_errno_table[] in syscall_init(). */
+static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
+};
+
+/*
+ * This list is the union of errno values overridden in asm-<arch>/errno.h
+ * minus the errnos that are not actually generic to all archs.
+ */
+static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
+ [EAGAIN] = TARGET_EAGAIN,
+ [EIDRM] = TARGET_EIDRM,
+ [ECHRNG] = TARGET_ECHRNG,
+ [EL2NSYNC] = TARGET_EL2NSYNC,
+ [EL3HLT] = TARGET_EL3HLT,
+ [EL3RST] = TARGET_EL3RST,
+ [ELNRNG] = TARGET_ELNRNG,
+ [EUNATCH] = TARGET_EUNATCH,
+ [ENOCSI] = TARGET_ENOCSI,
+ [EL2HLT] = TARGET_EL2HLT,
+ [EDEADLK] = TARGET_EDEADLK,
+ [ENOLCK] = TARGET_ENOLCK,
+ [EBADE] = TARGET_EBADE,
+ [EBADR] = TARGET_EBADR,
+ [EXFULL] = TARGET_EXFULL,
+ [ENOANO] = TARGET_ENOANO,
+ [EBADRQC] = TARGET_EBADRQC,
+ [EBADSLT] = TARGET_EBADSLT,
+ [EBFONT] = TARGET_EBFONT,
+ [ENOSTR] = TARGET_ENOSTR,
+ [ENODATA] = TARGET_ENODATA,
+ [ETIME] = TARGET_ETIME,
+ [ENOSR] = TARGET_ENOSR,
+ [ENONET] = TARGET_ENONET,
+ [ENOPKG] = TARGET_ENOPKG,
+ [EREMOTE] = TARGET_EREMOTE,
+ [ENOLINK] = TARGET_ENOLINK,
+ [EADV] = TARGET_EADV,
+ [ESRMNT] = TARGET_ESRMNT,
+ [ECOMM] = TARGET_ECOMM,
+ [EPROTO] = TARGET_EPROTO,
+ [EDOTDOT] = TARGET_EDOTDOT,
+ [EMULTIHOP] = TARGET_EMULTIHOP,
+ [EBADMSG] = TARGET_EBADMSG,
+ [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
+ [EOVERFLOW] = TARGET_EOVERFLOW,
+ [ENOTUNIQ] = TARGET_ENOTUNIQ,
+ [EBADFD] = TARGET_EBADFD,
+ [EREMCHG] = TARGET_EREMCHG,
+ [ELIBACC] = TARGET_ELIBACC,
+ [ELIBBAD] = TARGET_ELIBBAD,
+ [ELIBSCN] = TARGET_ELIBSCN,
+ [ELIBMAX] = TARGET_ELIBMAX,
+ [ELIBEXEC] = TARGET_ELIBEXEC,
+ [EILSEQ] = TARGET_EILSEQ,
+ [ENOSYS] = TARGET_ENOSYS,
+ [ELOOP] = TARGET_ELOOP,
+ [ERESTART] = TARGET_ERESTART,
+ [ESTRPIPE] = TARGET_ESTRPIPE,
+ [ENOTEMPTY] = TARGET_ENOTEMPTY,
+ [EUSERS] = TARGET_EUSERS,
+ [ENOTSOCK] = TARGET_ENOTSOCK,
+ [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
+ [EMSGSIZE] = TARGET_EMSGSIZE,
+ [EPROTOTYPE] = TARGET_EPROTOTYPE,
+ [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
+ [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
+ [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
+ [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
+ [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
+ [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
+ [EADDRINUSE] = TARGET_EADDRINUSE,
+ [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
+ [ENETDOWN] = TARGET_ENETDOWN,
+ [ENETUNREACH] = TARGET_ENETUNREACH,
+ [ENETRESET] = TARGET_ENETRESET,
+ [ECONNABORTED] = TARGET_ECONNABORTED,
+ [ECONNRESET] = TARGET_ECONNRESET,
+ [ENOBUFS] = TARGET_ENOBUFS,
+ [EISCONN] = TARGET_EISCONN,
+ [ENOTCONN] = TARGET_ENOTCONN,
+ [EUCLEAN] = TARGET_EUCLEAN,
+ [ENOTNAM] = TARGET_ENOTNAM,
+ [ENAVAIL] = TARGET_ENAVAIL,
+ [EISNAM] = TARGET_EISNAM,
+ [EREMOTEIO] = TARGET_EREMOTEIO,
+ [EDQUOT] = TARGET_EDQUOT,
+ [ESHUTDOWN] = TARGET_ESHUTDOWN,
+ [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
+ [ETIMEDOUT] = TARGET_ETIMEDOUT,
+ [ECONNREFUSED] = TARGET_ECONNREFUSED,
+ [EHOSTDOWN] = TARGET_EHOSTDOWN,
+ [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
+ [EALREADY] = TARGET_EALREADY,
+ [EINPROGRESS] = TARGET_EINPROGRESS,
+ [ESTALE] = TARGET_ESTALE,
+ [ECANCELED] = TARGET_ECANCELED,
+ [ENOMEDIUM] = TARGET_ENOMEDIUM,
+ [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
+#ifdef ENOKEY
+ [ENOKEY] = TARGET_ENOKEY,
+#endif
+#ifdef EKEYEXPIRED
+ [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
+#endif
+#ifdef EKEYREVOKED
+ [EKEYREVOKED] = TARGET_EKEYREVOKED,
+#endif
+#ifdef EKEYREJECTED
+ [EKEYREJECTED] = TARGET_EKEYREJECTED,
+#endif
+#ifdef EOWNERDEAD
+ [EOWNERDEAD] = TARGET_EOWNERDEAD,
+#endif
+#ifdef ENOTRECOVERABLE
+ [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
+#endif
+#ifdef ENOMSG
+ [ENOMSG] = TARGET_ENOMSG,
+#endif
+#ifdef ERKFILL
+ [ERFKILL] = TARGET_ERFKILL,
+#endif
+#ifdef EHWPOISON
+ [EHWPOISON] = TARGET_EHWPOISON,
+#endif
+};
+
+static inline int host_to_target_errno(int err)
+{
+ if (err >= 0 && err < ERRNO_TABLE_SIZE &&
+ host_to_target_errno_table[err]) {
+ return host_to_target_errno_table[err];
+ }
+ return err;
+}
+
+static inline int target_to_host_errno(int err)
+{
+ if (err >= 0 && err < ERRNO_TABLE_SIZE &&
+ target_to_host_errno_table[err]) {
+ return target_to_host_errno_table[err];
+ }
+ return err;
+}
+
+static inline abi_long get_errno(abi_long ret)
+{
+ if (ret == -1)
+ return -host_to_target_errno(errno);
+ else
+ return ret;
+}
+
+const char *target_strerror(int err)
+{
+ if (err == TARGET_ERESTARTSYS) {
+ return "To be restarted";
+ }
+ if (err == TARGET_QEMU_ESIGRETURN) {
+ return "Successful exit from sigreturn";
+ }
+
+ if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
+ return NULL;
+ }
+ return strerror(target_to_host_errno(err));
+}
+
+#define safe_syscall0(type, name) \
+static type safe_##name(void) \
+{ \
+ return safe_syscall(__NR_##name); \
+}
+
+#define safe_syscall1(type, name, type1, arg1) \
+static type safe_##name(type1 arg1) \
+{ \
+ return safe_syscall(__NR_##name, arg1); \
+}
+
+#define safe_syscall2(type, name, type1, arg1, type2, arg2) \
+static type safe_##name(type1 arg1, type2 arg2) \
+{ \
+ return safe_syscall(__NR_##name, arg1, arg2); \
+}
+
+#define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
+static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
+{ \
+ return safe_syscall(__NR_##name, arg1, arg2, arg3); \
+}
+
+#define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4) \
+static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+ return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
+}
+
+#define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4, type5, arg5) \
+static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+ type5 arg5) \
+{ \
+ return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
+}
+
+#define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4, type5, arg5, type6, arg6) \
+static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+ type5 arg5, type6 arg6) \
+{ \
+ return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
+}
+
+safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
+safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
+safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
+ int, flags, mode_t, mode)
+#if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
+safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
+ struct rusage *, rusage)
+#endif
+safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
+ int, options, struct rusage *, rusage)
+safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
+#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
+ defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
+safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
+ fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
+#endif
+#if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64)
+safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
+ struct timespec *, tsp, const sigset_t *, sigmask,
+ size_t, sigsetsize)
+#endif
+safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
+ int, maxevents, int, timeout, const sigset_t *, sigmask,
+ size_t, sigsetsize)
+#if defined(__NR_futex)
+safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
+ const struct timespec *,timeout,int *,uaddr2,int,val3)
+#endif
+#if defined(__NR_futex_time64)
+safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \
+ const struct timespec *,timeout,int *,uaddr2,int,val3)
+#endif
+safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
+safe_syscall2(int, kill, pid_t, pid, int, sig)
+safe_syscall2(int, tkill, int, tid, int, sig)
+safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
+safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
+safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
+safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
+ unsigned long, pos_l, unsigned long, pos_h)
+safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
+ unsigned long, pos_l, unsigned long, pos_h)
+safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
+ socklen_t, addrlen)
+safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
+ int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
+safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
+ int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
+safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
+safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
+safe_syscall2(int, flock, int, fd, int, operation)
+#if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64)
+safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
+ const struct timespec *, uts, size_t, sigsetsize)
+#endif
+safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
+ int, flags)
+#if defined(TARGET_NR_nanosleep)
+safe_syscall2(int, nanosleep, const struct timespec *, req,
+ struct timespec *, rem)
+#endif
+#if defined(TARGET_NR_clock_nanosleep) || \
+ defined(TARGET_NR_clock_nanosleep_time64)
+safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
+ const struct timespec *, req, struct timespec *, rem)
+#endif
+#ifdef __NR_ipc
+#ifdef __s390x__
+safe_syscall5(int, ipc, int, call, long, first, long, second, long, third,
+ void *, ptr)
+#else
+safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
+ void *, ptr, long, fifth)
+#endif
+#endif
+#ifdef __NR_msgsnd
+safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
+ int, flags)
+#endif
+#ifdef __NR_msgrcv
+safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
+ long, msgtype, int, flags)
+#endif
+#ifdef __NR_semtimedop
+safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
+ unsigned, nsops, const struct timespec *, timeout)
+#endif
+#if defined(TARGET_NR_mq_timedsend) || \
+ defined(TARGET_NR_mq_timedsend_time64)
+safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
+ size_t, len, unsigned, prio, const struct timespec *, timeout)
+#endif
+#if defined(TARGET_NR_mq_timedreceive) || \
+ defined(TARGET_NR_mq_timedreceive_time64)
+safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
+ size_t, len, unsigned *, prio, const struct timespec *, timeout)
+#endif
+#if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
+safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff,
+ int, outfd, loff_t *, poutoff, size_t, length,
+ unsigned int, flags)
+#endif
+
+/* We do ioctl like this rather than via safe_syscall3 to preserve the
+ * "third argument might be integer or pointer or not present" behaviour of
+ * the libc function.
+ */
+#define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
+/* Similarly for fcntl. Note that callers must always:
+ * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
+ * use the flock64 struct rather than unsuffixed flock
+ * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
+ */
+#ifdef __NR_fcntl64
+#define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
+#else
+#define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
+#endif
+
+static inline int host_to_target_sock_type(int host_type)
+{
+ int target_type;
+
+ switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
+ case SOCK_DGRAM:
+ target_type = TARGET_SOCK_DGRAM;
+ break;
+ case SOCK_STREAM:
+ target_type = TARGET_SOCK_STREAM;
+ break;
+ default:
+ target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
+ break;
+ }
+
+#if defined(SOCK_CLOEXEC)
+ if (host_type & SOCK_CLOEXEC) {
+ target_type |= TARGET_SOCK_CLOEXEC;
+ }
+#endif
+
+#if defined(SOCK_NONBLOCK)
+ if (host_type & SOCK_NONBLOCK) {
+ target_type |= TARGET_SOCK_NONBLOCK;
+ }
+#endif
+
+ return target_type;
+}
+
+static abi_ulong target_brk;
+static abi_ulong target_original_brk;
+static abi_ulong brk_page;
+
+void target_set_brk(abi_ulong new_brk)
+{
+ target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
+ brk_page = HOST_PAGE_ALIGN(target_brk);
+}
+
+//#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
+#define DEBUGF_BRK(message, args...)
+
+/* do_brk() must return target values and target errnos. */
+abi_long do_brk(abi_ulong new_brk)
+{
+ abi_long mapped_addr;
+ abi_ulong new_alloc_size;
+
+ /* brk pointers are always untagged */
+
+ DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
+
+ if (!new_brk) {
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
+ return target_brk;
+ }
+ if (new_brk < target_original_brk) {
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
+ target_brk);
+ return target_brk;
+ }
+
+ /* If the new brk is less than the highest page reserved to the
+ * target heap allocation, set it and we're almost done... */
+ if (new_brk <= brk_page) {
+ /* Heap contents are initialized to zero, as for anonymous
+ * mapped pages. */
+ if (new_brk > target_brk) {
+ memset(g2h_untagged(target_brk), 0, new_brk - target_brk);
+ }
+ target_brk = new_brk;
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
+ return target_brk;
+ }
+
+ /* We need to allocate more memory after the brk... Note that
+ * we don't use MAP_FIXED because that will map over the top of
+ * any existing mapping (like the one with the host libc or qemu
+ * itself); instead we treat "mapped but at wrong address" as
+ * a failure and unmap again.
+ */
+ new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
+ mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
+ PROT_READ|PROT_WRITE,
+ MAP_ANON|MAP_PRIVATE, 0, 0));
+
+ if (mapped_addr == brk_page) {
+ /* Heap contents are initialized to zero, as for anonymous
+ * mapped pages. Technically the new pages are already
+ * initialized to zero since they *are* anonymous mapped
+ * pages, however we have to take care with the contents that
+ * come from the remaining part of the previous page: it may
+ * contains garbage data due to a previous heap usage (grown
+ * then shrunken). */
+ memset(g2h_untagged(target_brk), 0, brk_page - target_brk);
+
+ target_brk = new_brk;
+ brk_page = HOST_PAGE_ALIGN(target_brk);
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
+ target_brk);
+ return target_brk;
+ } else if (mapped_addr != -1) {
+ /* Mapped but at wrong address, meaning there wasn't actually
+ * enough space for this brk.
+ */
+ target_munmap(mapped_addr, new_alloc_size);
+ mapped_addr = -1;
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
+ }
+ else {
+ DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
+ }
+
+#if defined(TARGET_ALPHA)
+ /* We (partially) emulate OSF/1 on Alpha, which requires we
+ return a proper errno, not an unchanged brk value. */
+ return -TARGET_ENOMEM;
+#endif
+ /* For everything else, return the previous break. */
+ return target_brk;
+}
+
+#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
+ defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
+static inline abi_long copy_from_user_fdset(fd_set *fds,
+ abi_ulong target_fds_addr,
+ int n)
+{
+ int i, nw, j, k;
+ abi_ulong b, *target_fds;
+
+ nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
+ if (!(target_fds = lock_user(VERIFY_READ,
+ target_fds_addr,
+ sizeof(abi_ulong) * nw,
+ 1)))
+ return -TARGET_EFAULT;
+
+ FD_ZERO(fds);
+ k = 0;
+ for (i = 0; i < nw; i++) {
+ /* grab the abi_ulong */
+ __get_user(b, &target_fds[i]);
+ for (j = 0; j < TARGET_ABI_BITS; j++) {
+ /* check the bit inside the abi_ulong */
+ if ((b >> j) & 1)
+ FD_SET(k, fds);
+ k++;
+ }
+ }
+
+ unlock_user(target_fds, target_fds_addr, 0);
+
+ return 0;
+}
+
+static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
+ abi_ulong target_fds_addr,
+ int n)
+{
+ if (target_fds_addr) {
+ if (copy_from_user_fdset(fds, target_fds_addr, n))
+ return -TARGET_EFAULT;
+ *fds_ptr = fds;
+ } else {
+ *fds_ptr = NULL;
+ }
+ return 0;
+}
+
+static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
+ const fd_set *fds,
+ int n)
+{
+ int i, nw, j, k;
+ abi_long v;
+ abi_ulong *target_fds;
+
+ nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
+ if (!(target_fds = lock_user(VERIFY_WRITE,
+ target_fds_addr,
+ sizeof(abi_ulong) * nw,
+ 0)))
+ return -TARGET_EFAULT;
+
+ k = 0;
+ for (i = 0; i < nw; i++) {
+ v = 0;
+ for (j = 0; j < TARGET_ABI_BITS; j++) {
+ v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
+ k++;
+ }
+ __put_user(v, &target_fds[i]);
+ }
+
+ unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
+
+ return 0;
+}
+#endif
+
+#if defined(__alpha__)
+#define HOST_HZ 1024
+#else
+#define HOST_HZ 100
+#endif
+
+static inline abi_long host_to_target_clock_t(long ticks)
+{
+#if HOST_HZ == TARGET_HZ
+ return ticks;
+#else
+ return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
+#endif
+}
+
+static inline abi_long host_to_target_rusage(abi_ulong target_addr,
+ const struct rusage *rusage)
+{
+ struct target_rusage *target_rusage;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
+ return -TARGET_EFAULT;
+ target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
+ target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
+ target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
+ target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
+ target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
+ target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
+ target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
+ target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
+ target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
+ target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
+ target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
+ target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
+ target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
+ target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
+ target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
+ target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
+ target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
+ target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
+ unlock_user_struct(target_rusage, target_addr, 1);
+
+ return 0;
+}
+
+#ifdef TARGET_NR_setrlimit
+static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
+{
+ abi_ulong target_rlim_swap;
+ rlim_t result;
+
+ target_rlim_swap = tswapal(target_rlim);
+ if (target_rlim_swap == TARGET_RLIM_INFINITY)
+ return RLIM_INFINITY;
+
+ result = target_rlim_swap;
+ if (target_rlim_swap != (rlim_t)result)
+ return RLIM_INFINITY;
+
+ return result;
+}
+#endif
+
+#if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
+static inline abi_ulong host_to_target_rlim(rlim_t rlim)
+{
+ abi_ulong target_rlim_swap;
+ abi_ulong result;
+
+ if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
+ target_rlim_swap = TARGET_RLIM_INFINITY;
+ else
+ target_rlim_swap = rlim;
+ result = tswapal(target_rlim_swap);
+
+ return result;
+}
+#endif
+
+static inline int target_to_host_resource(int code)
+{
+ switch (code) {
+ case TARGET_RLIMIT_AS:
+ return RLIMIT_AS;
+ case TARGET_RLIMIT_CORE:
+ return RLIMIT_CORE;
+ case TARGET_RLIMIT_CPU:
+ return RLIMIT_CPU;
+ case TARGET_RLIMIT_DATA:
+ return RLIMIT_DATA;
+ case TARGET_RLIMIT_FSIZE:
+ return RLIMIT_FSIZE;
+ case TARGET_RLIMIT_LOCKS:
+ return RLIMIT_LOCKS;
+ case TARGET_RLIMIT_MEMLOCK:
+ return RLIMIT_MEMLOCK;
+ case TARGET_RLIMIT_MSGQUEUE:
+ return RLIMIT_MSGQUEUE;
+ case TARGET_RLIMIT_NICE:
+ return RLIMIT_NICE;
+ case TARGET_RLIMIT_NOFILE:
+ return RLIMIT_NOFILE;
+ case TARGET_RLIMIT_NPROC:
+ return RLIMIT_NPROC;
+ case TARGET_RLIMIT_RSS:
+ return RLIMIT_RSS;
+ case TARGET_RLIMIT_RTPRIO:
+ return RLIMIT_RTPRIO;
+ case TARGET_RLIMIT_SIGPENDING:
+ return RLIMIT_SIGPENDING;
+ case TARGET_RLIMIT_STACK:
+ return RLIMIT_STACK;
+ default:
+ return code;
+ }
+}
+
+static inline abi_long copy_from_user_timeval(struct timeval *tv,
+ abi_ulong target_tv_addr)
+{
+ struct target_timeval *target_tv;
+
+ if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(tv->tv_sec, &target_tv->tv_sec);
+ __get_user(tv->tv_usec, &target_tv->tv_usec);
+
+ unlock_user_struct(target_tv, target_tv_addr, 0);
+
+ return 0;
+}
+
+static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
+ const struct timeval *tv)
+{
+ struct target_timeval *target_tv;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(tv->tv_sec, &target_tv->tv_sec);
+ __put_user(tv->tv_usec, &target_tv->tv_usec);
+
+ unlock_user_struct(target_tv, target_tv_addr, 1);
+
+ return 0;
+}
+
+#if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
+static inline abi_long copy_from_user_timeval64(struct timeval *tv,
+ abi_ulong target_tv_addr)
+{
+ struct target__kernel_sock_timeval *target_tv;
+
+ if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(tv->tv_sec, &target_tv->tv_sec);
+ __get_user(tv->tv_usec, &target_tv->tv_usec);
+
+ unlock_user_struct(target_tv, target_tv_addr, 0);
+
+ return 0;
+}
+#endif
+
+static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
+ const struct timeval *tv)
+{
+ struct target__kernel_sock_timeval *target_tv;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(tv->tv_sec, &target_tv->tv_sec);
+ __put_user(tv->tv_usec, &target_tv->tv_usec);
+
+ unlock_user_struct(target_tv, target_tv_addr, 1);
+
+ return 0;
+}
+
+#if defined(TARGET_NR_futex) || \
+ defined(TARGET_NR_rt_sigtimedwait) || \
+ defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
+ defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
+ defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
+ defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \
+ defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \
+ defined(TARGET_NR_timer_settime) || \
+ (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
+static inline abi_long target_to_host_timespec(struct timespec *host_ts,
+ abi_ulong target_addr)
+{
+ struct target_timespec *target_ts;
+
+ if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(host_ts->tv_sec, &target_ts->tv_sec);
+ __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
+ unlock_user_struct(target_ts, target_addr, 0);
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \
+ defined(TARGET_NR_timer_settime64) || \
+ defined(TARGET_NR_mq_timedsend_time64) || \
+ defined(TARGET_NR_mq_timedreceive_time64) || \
+ (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \
+ defined(TARGET_NR_clock_nanosleep_time64) || \
+ defined(TARGET_NR_rt_sigtimedwait_time64) || \
+ defined(TARGET_NR_utimensat) || \
+ defined(TARGET_NR_utimensat_time64) || \
+ defined(TARGET_NR_semtimedop_time64) || \
+ defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64)
+static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
+ abi_ulong target_addr)
+{
+ struct target__kernel_timespec *target_ts;
+
+ if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(host_ts->tv_sec, &target_ts->tv_sec);
+ __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
+ /* in 32bit mode, this drops the padding */
+ host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec;
+ unlock_user_struct(target_ts, target_addr, 0);
+ return 0;
+}
+#endif
+
+static inline abi_long host_to_target_timespec(abi_ulong target_addr,
+ struct timespec *host_ts)
+{
+ struct target_timespec *target_ts;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(host_ts->tv_sec, &target_ts->tv_sec);
+ __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
+ unlock_user_struct(target_ts, target_addr, 1);
+ return 0;
+}
+
+static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
+ struct timespec *host_ts)
+{
+ struct target__kernel_timespec *target_ts;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(host_ts->tv_sec, &target_ts->tv_sec);
+ __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
+ unlock_user_struct(target_ts, target_addr, 1);
+ return 0;
+}
+
+#if defined(TARGET_NR_gettimeofday)
+static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
+ struct timezone *tz)
+{
+ struct target_timezone *target_tz;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
+ __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
+
+ unlock_user_struct(target_tz, target_tz_addr, 1);
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_settimeofday)
+static inline abi_long copy_from_user_timezone(struct timezone *tz,
+ abi_ulong target_tz_addr)
+{
+ struct target_timezone *target_tz;
+
+ if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
+ __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
+
+ unlock_user_struct(target_tz, target_tz_addr, 0);
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
+#include <mqueue.h>
+
+static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
+ abi_ulong target_mq_attr_addr)
+{
+ struct target_mq_attr *target_mq_attr;
+
+ if (!lock_user_struct(VERIFY_READ, target_mq_attr,
+ target_mq_attr_addr, 1))
+ return -TARGET_EFAULT;
+
+ __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
+ __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
+ __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
+ __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
+
+ unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
+
+ return 0;
+}
+
+static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
+ const struct mq_attr *attr)
+{
+ struct target_mq_attr *target_mq_attr;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
+ target_mq_attr_addr, 0))
+ return -TARGET_EFAULT;
+
+ __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
+ __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
+ __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
+ __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
+
+ unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
+/* do_select() must return target values and target errnos. */
+static abi_long do_select(int n,
+ abi_ulong rfd_addr, abi_ulong wfd_addr,
+ abi_ulong efd_addr, abi_ulong target_tv_addr)
+{
+ fd_set rfds, wfds, efds;
+ fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
+ struct timeval tv;
+ struct timespec ts, *ts_ptr;
+ abi_long ret;
+
+ ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
+ if (ret) {
+ return ret;
+ }
+ ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
+ if (ret) {
+ return ret;
+ }
+ ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
+ if (ret) {
+ return ret;
+ }
+
+ if (target_tv_addr) {
+ if (copy_from_user_timeval(&tv, target_tv_addr))
+ return -TARGET_EFAULT;
+ ts.tv_sec = tv.tv_sec;
+ ts.tv_nsec = tv.tv_usec * 1000;
+ ts_ptr = &ts;
+ } else {
+ ts_ptr = NULL;
+ }
+
+ ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
+ ts_ptr, NULL));
+
+ if (!is_error(ret)) {
+ if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
+ return -TARGET_EFAULT;
+ if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
+ return -TARGET_EFAULT;
+ if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
+ return -TARGET_EFAULT;
+
+ if (target_tv_addr) {
+ tv.tv_sec = ts.tv_sec;
+ tv.tv_usec = ts.tv_nsec / 1000;
+ if (copy_to_user_timeval(target_tv_addr, &tv)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+
+ return ret;
+}
+
+#if defined(TARGET_WANT_OLD_SYS_SELECT)
+static abi_long do_old_select(abi_ulong arg1)
+{
+ struct target_sel_arg_struct *sel;
+ abi_ulong inp, outp, exp, tvp;
+ long nsel;
+
+ if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ nsel = tswapal(sel->n);
+ inp = tswapal(sel->inp);
+ outp = tswapal(sel->outp);
+ exp = tswapal(sel->exp);
+ tvp = tswapal(sel->tvp);
+
+ unlock_user_struct(sel, arg1, 0);
+
+ return do_select(nsel, inp, outp, exp, tvp);
+}
+#endif
+#endif
+
+#if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
+static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6,
+ bool time64)
+{
+ abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
+ fd_set rfds, wfds, efds;
+ fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
+ struct timespec ts, *ts_ptr;
+ abi_long ret;
+
+ /*
+ * The 6th arg is actually two args smashed together,
+ * so we cannot use the C library.
+ */
+ sigset_t set;
+ struct {
+ sigset_t *set;
+ size_t size;
+ } sig, *sig_ptr;
+
+ abi_ulong arg_sigset, arg_sigsize, *arg7;
+ target_sigset_t *target_sigset;
+
+ n = arg1;
+ rfd_addr = arg2;
+ wfd_addr = arg3;
+ efd_addr = arg4;
+ ts_addr = arg5;
+
+ ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
+ if (ret) {
+ return ret;
+ }
+ ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
+ if (ret) {
+ return ret;
+ }
+ ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
+ if (ret) {
+ return ret;
+ }
+
+ /*
+ * This takes a timespec, and not a timeval, so we cannot
+ * use the do_select() helper ...
+ */
+ if (ts_addr) {
+ if (time64) {
+ if (target_to_host_timespec64(&ts, ts_addr)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (target_to_host_timespec(&ts, ts_addr)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ ts_ptr = &ts;
+ } else {
+ ts_ptr = NULL;
+ }
+
+ /* Extract the two packed args for the sigset */
+ if (arg6) {
+ sig_ptr = &sig;
+ sig.size = SIGSET_T_SIZE;
+
+ arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
+ if (!arg7) {
+ return -TARGET_EFAULT;
+ }
+ arg_sigset = tswapal(arg7[0]);
+ arg_sigsize = tswapal(arg7[1]);
+ unlock_user(arg7, arg6, 0);
+
+ if (arg_sigset) {
+ sig.set = &set;
+ if (arg_sigsize != sizeof(*target_sigset)) {
+ /* Like the kernel, we enforce correct size sigsets */
+ return -TARGET_EINVAL;
+ }
+ target_sigset = lock_user(VERIFY_READ, arg_sigset,
+ sizeof(*target_sigset), 1);
+ if (!target_sigset) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_sigset(&set, target_sigset);
+ unlock_user(target_sigset, arg_sigset, 0);
+ } else {
+ sig.set = NULL;
+ }
+ } else {
+ sig_ptr = NULL;
+ }
+
+ ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
+ ts_ptr, sig_ptr));
+
+ if (!is_error(ret)) {
+ if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) {
+ return -TARGET_EFAULT;
+ }
+ if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) {
+ return -TARGET_EFAULT;
+ }
+ if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) {
+ return -TARGET_EFAULT;
+ }
+ if (time64) {
+ if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (ts_addr && host_to_target_timespec(ts_addr, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+}
+#endif
+
+#if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \
+ defined(TARGET_NR_ppoll_time64)
+static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, bool ppoll, bool time64)
+{
+ struct target_pollfd *target_pfd;
+ unsigned int nfds = arg2;
+ struct pollfd *pfd;
+ unsigned int i;
+ abi_long ret;
+
+ pfd = NULL;
+ target_pfd = NULL;
+ if (nfds) {
+ if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
+ return -TARGET_EINVAL;
+ }
+ target_pfd = lock_user(VERIFY_WRITE, arg1,
+ sizeof(struct target_pollfd) * nfds, 1);
+ if (!target_pfd) {
+ return -TARGET_EFAULT;
+ }
+
+ pfd = alloca(sizeof(struct pollfd) * nfds);
+ for (i = 0; i < nfds; i++) {
+ pfd[i].fd = tswap32(target_pfd[i].fd);
+ pfd[i].events = tswap16(target_pfd[i].events);
+ }
+ }
+ if (ppoll) {
+ struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
+ target_sigset_t *target_set;
+ sigset_t _set, *set = &_set;
+
+ if (arg3) {
+ if (time64) {
+ if (target_to_host_timespec64(timeout_ts, arg3)) {
+ unlock_user(target_pfd, arg1, 0);
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (target_to_host_timespec(timeout_ts, arg3)) {
+ unlock_user(target_pfd, arg1, 0);
+ return -TARGET_EFAULT;
+ }
+ }
+ } else {
+ timeout_ts = NULL;
+ }
+
+ if (arg4) {
+ if (arg5 != sizeof(target_sigset_t)) {
+ unlock_user(target_pfd, arg1, 0);
+ return -TARGET_EINVAL;
+ }
+
+ target_set = lock_user(VERIFY_READ, arg4,
+ sizeof(target_sigset_t), 1);
+ if (!target_set) {
+ unlock_user(target_pfd, arg1, 0);
+ return -TARGET_EFAULT;
+ }
+ target_to_host_sigset(set, target_set);
+ } else {
+ set = NULL;
+ }
+
+ ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
+ set, SIGSET_T_SIZE));
+
+ if (!is_error(ret) && arg3) {
+ if (time64) {
+ if (host_to_target_timespec64(arg3, timeout_ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (host_to_target_timespec(arg3, timeout_ts)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ if (arg4) {
+ unlock_user(target_set, arg4, 0);
+ }
+ } else {
+ struct timespec ts, *pts;
+
+ if (arg3 >= 0) {
+ /* Convert ms to secs, ns */
+ ts.tv_sec = arg3 / 1000;
+ ts.tv_nsec = (arg3 % 1000) * 1000000LL;
+ pts = &ts;
+ } else {
+ /* -ve poll() timeout means "infinite" */
+ pts = NULL;
+ }
+ ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
+ }
+
+ if (!is_error(ret)) {
+ for (i = 0; i < nfds; i++) {
+ target_pfd[i].revents = tswap16(pfd[i].revents);
+ }
+ }
+ unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
+ return ret;
+}
+#endif
+
+static abi_long do_pipe2(int host_pipe[], int flags)
+{
+#ifdef CONFIG_PIPE2
+ return pipe2(host_pipe, flags);
+#else
+ return -ENOSYS;
+#endif
+}
+
+static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
+ int flags, int is_pipe2)
+{
+ int host_pipe[2];
+ abi_long ret;
+ ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
+
+ if (is_error(ret))
+ return get_errno(ret);
+
+ /* Several targets have special calling conventions for the original
+ pipe syscall, but didn't replicate this into the pipe2 syscall. */
+ if (!is_pipe2) {
+#if defined(TARGET_ALPHA)
+ ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
+ return host_pipe[0];
+#elif defined(TARGET_MIPS)
+ ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
+ return host_pipe[0];
+#elif defined(TARGET_SH4)
+ ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
+ return host_pipe[0];
+#elif defined(TARGET_SPARC)
+ ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
+ return host_pipe[0];
+#endif
+ }
+
+ if (put_user_s32(host_pipe[0], pipedes)
+ || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
+ return -TARGET_EFAULT;
+ return get_errno(ret);
+}
+
+static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
+ abi_ulong target_addr,
+ socklen_t len)
+{
+ struct target_ip_mreqn *target_smreqn;
+
+ target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
+ if (!target_smreqn)
+ return -TARGET_EFAULT;
+ mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
+ mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
+ if (len == sizeof(struct target_ip_mreqn))
+ mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
+ unlock_user(target_smreqn, target_addr, 0);
+
+ return 0;
+}
+
+static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
+ abi_ulong target_addr,
+ socklen_t len)
+{
+ const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
+ sa_family_t sa_family;
+ struct target_sockaddr *target_saddr;
+
+ if (fd_trans_target_to_host_addr(fd)) {
+ return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
+ }
+
+ target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
+ if (!target_saddr)
+ return -TARGET_EFAULT;
+
+ sa_family = tswap16(target_saddr->sa_family);
+
+ /* Oops. The caller might send a incomplete sun_path; sun_path
+ * must be terminated by \0 (see the manual page), but
+ * unfortunately it is quite common to specify sockaddr_un
+ * length as "strlen(x->sun_path)" while it should be
+ * "strlen(...) + 1". We'll fix that here if needed.
+ * Linux kernel has a similar feature.
+ */
+
+ if (sa_family == AF_UNIX) {
+ if (len < unix_maxlen && len > 0) {
+ char *cp = (char*)target_saddr;
+
+ if ( cp[len-1] && !cp[len] )
+ len++;
+ }
+ if (len > unix_maxlen)
+ len = unix_maxlen;
+ }
+
+ memcpy(addr, target_saddr, len);
+ addr->sa_family = sa_family;
+ if (sa_family == AF_NETLINK) {
+ struct sockaddr_nl *nladdr;
+
+ nladdr = (struct sockaddr_nl *)addr;
+ nladdr->nl_pid = tswap32(nladdr->nl_pid);
+ nladdr->nl_groups = tswap32(nladdr->nl_groups);
+ } else if (sa_family == AF_PACKET) {
+ struct target_sockaddr_ll *lladdr;
+
+ lladdr = (struct target_sockaddr_ll *)addr;
+ lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
+ lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
+ }
+ unlock_user(target_saddr, target_addr, 0);
+
+ return 0;
+}
+
+static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
+ struct sockaddr *addr,
+ socklen_t len)
+{
+ struct target_sockaddr *target_saddr;
+
+ if (len == 0) {
+ return 0;
+ }
+ assert(addr);
+
+ target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
+ if (!target_saddr)
+ return -TARGET_EFAULT;
+ memcpy(target_saddr, addr, len);
+ if (len >= offsetof(struct target_sockaddr, sa_family) +
+ sizeof(target_saddr->sa_family)) {
+ target_saddr->sa_family = tswap16(addr->sa_family);
+ }
+ if (addr->sa_family == AF_NETLINK &&
+ len >= sizeof(struct target_sockaddr_nl)) {
+ struct target_sockaddr_nl *target_nl =
+ (struct target_sockaddr_nl *)target_saddr;
+ target_nl->nl_pid = tswap32(target_nl->nl_pid);
+ target_nl->nl_groups = tswap32(target_nl->nl_groups);
+ } else if (addr->sa_family == AF_PACKET) {
+ struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
+ target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
+ target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
+ } else if (addr->sa_family == AF_INET6 &&
+ len >= sizeof(struct target_sockaddr_in6)) {
+ struct target_sockaddr_in6 *target_in6 =
+ (struct target_sockaddr_in6 *)target_saddr;
+ target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
+ }
+ unlock_user(target_saddr, target_addr, len);
+
+ return 0;
+}
+
+static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
+ struct target_msghdr *target_msgh)
+{
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
+ abi_long msg_controllen;
+ abi_ulong target_cmsg_addr;
+ struct target_cmsghdr *target_cmsg, *target_cmsg_start;
+ socklen_t space = 0;
+
+ msg_controllen = tswapal(target_msgh->msg_controllen);
+ if (msg_controllen < sizeof (struct target_cmsghdr))
+ goto the_end;
+ target_cmsg_addr = tswapal(target_msgh->msg_control);
+ target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
+ target_cmsg_start = target_cmsg;
+ if (!target_cmsg)
+ return -TARGET_EFAULT;
+
+ while (cmsg && target_cmsg) {
+ void *data = CMSG_DATA(cmsg);
+ void *target_data = TARGET_CMSG_DATA(target_cmsg);
+
+ int len = tswapal(target_cmsg->cmsg_len)
+ - sizeof(struct target_cmsghdr);
+
+ space += CMSG_SPACE(len);
+ if (space > msgh->msg_controllen) {
+ space -= CMSG_SPACE(len);
+ /* This is a QEMU bug, since we allocated the payload
+ * area ourselves (unlike overflow in host-to-target
+ * conversion, which is just the guest giving us a buffer
+ * that's too small). It can't happen for the payload types
+ * we currently support; if it becomes an issue in future
+ * we would need to improve our allocation strategy to
+ * something more intelligent than "twice the size of the
+ * target buffer we're reading from".
+ */
+ qemu_log_mask(LOG_UNIMP,
+ ("Unsupported ancillary data %d/%d: "
+ "unhandled msg size\n"),
+ tswap32(target_cmsg->cmsg_level),
+ tswap32(target_cmsg->cmsg_type));
+ break;
+ }
+
+ if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
+ cmsg->cmsg_level = SOL_SOCKET;
+ } else {
+ cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
+ }
+ cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
+ cmsg->cmsg_len = CMSG_LEN(len);
+
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+ int *fd = (int *)data;
+ int *target_fd = (int *)target_data;
+ int i, numfds = len / sizeof(int);
+
+ for (i = 0; i < numfds; i++) {
+ __get_user(fd[i], target_fd + i);
+ }
+ } else if (cmsg->cmsg_level == SOL_SOCKET
+ && cmsg->cmsg_type == SCM_CREDENTIALS) {
+ struct ucred *cred = (struct ucred *)data;
+ struct target_ucred *target_cred =
+ (struct target_ucred *)target_data;
+
+ __get_user(cred->pid, &target_cred->pid);
+ __get_user(cred->uid, &target_cred->uid);
+ __get_user(cred->gid, &target_cred->gid);
+ } else {
+ qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
+ cmsg->cmsg_level, cmsg->cmsg_type);
+ memcpy(data, target_data, len);
+ }
+
+ cmsg = CMSG_NXTHDR(msgh, cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
+ target_cmsg_start);
+ }
+ unlock_user(target_cmsg, target_cmsg_addr, 0);
+ the_end:
+ msgh->msg_controllen = space;
+ return 0;
+}
+
+static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
+ struct msghdr *msgh)
+{
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
+ abi_long msg_controllen;
+ abi_ulong target_cmsg_addr;
+ struct target_cmsghdr *target_cmsg, *target_cmsg_start;
+ socklen_t space = 0;
+
+ msg_controllen = tswapal(target_msgh->msg_controllen);
+ if (msg_controllen < sizeof (struct target_cmsghdr))
+ goto the_end;
+ target_cmsg_addr = tswapal(target_msgh->msg_control);
+ target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
+ target_cmsg_start = target_cmsg;
+ if (!target_cmsg)
+ return -TARGET_EFAULT;
+
+ while (cmsg && target_cmsg) {
+ void *data = CMSG_DATA(cmsg);
+ void *target_data = TARGET_CMSG_DATA(target_cmsg);
+
+ int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
+ int tgt_len, tgt_space;
+
+ /* We never copy a half-header but may copy half-data;
+ * this is Linux's behaviour in put_cmsg(). Note that
+ * truncation here is a guest problem (which we report
+ * to the guest via the CTRUNC bit), unlike truncation
+ * in target_to_host_cmsg, which is a QEMU bug.
+ */
+ if (msg_controllen < sizeof(struct target_cmsghdr)) {
+ target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
+ break;
+ }
+
+ if (cmsg->cmsg_level == SOL_SOCKET) {
+ target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
+ } else {
+ target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
+ }
+ target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
+
+ /* Payload types which need a different size of payload on
+ * the target must adjust tgt_len here.
+ */
+ tgt_len = len;
+ switch (cmsg->cmsg_level) {
+ case SOL_SOCKET:
+ switch (cmsg->cmsg_type) {
+ case SO_TIMESTAMP:
+ tgt_len = sizeof(struct target_timeval);
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
+ target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
+ tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
+ }
+
+ /* We must now copy-and-convert len bytes of payload
+ * into tgt_len bytes of destination space. Bear in mind
+ * that in both source and destination we may be dealing
+ * with a truncated value!
+ */
+ switch (cmsg->cmsg_level) {
+ case SOL_SOCKET:
+ switch (cmsg->cmsg_type) {
+ case SCM_RIGHTS:
+ {
+ int *fd = (int *)data;
+ int *target_fd = (int *)target_data;
+ int i, numfds = tgt_len / sizeof(int);
+
+ for (i = 0; i < numfds; i++) {
+ __put_user(fd[i], target_fd + i);
+ }
+ break;
+ }
+ case SO_TIMESTAMP:
+ {
+ struct timeval *tv = (struct timeval *)data;
+ struct target_timeval *target_tv =
+ (struct target_timeval *)target_data;
+
+ if (len != sizeof(struct timeval) ||
+ tgt_len != sizeof(struct target_timeval)) {
+ goto unimplemented;
+ }
+
+ /* copy struct timeval to target */
+ __put_user(tv->tv_sec, &target_tv->tv_sec);
+ __put_user(tv->tv_usec, &target_tv->tv_usec);
+ break;
+ }
+ case SCM_CREDENTIALS:
+ {
+ struct ucred *cred = (struct ucred *)data;
+ struct target_ucred *target_cred =
+ (struct target_ucred *)target_data;
+
+ __put_user(cred->pid, &target_cred->pid);
+ __put_user(cred->uid, &target_cred->uid);
+ __put_user(cred->gid, &target_cred->gid);
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+
+ case SOL_IP:
+ switch (cmsg->cmsg_type) {
+ case IP_TTL:
+ {
+ uint32_t *v = (uint32_t *)data;
+ uint32_t *t_int = (uint32_t *)target_data;
+
+ if (len != sizeof(uint32_t) ||
+ tgt_len != sizeof(uint32_t)) {
+ goto unimplemented;
+ }
+ __put_user(*v, t_int);
+ break;
+ }
+ case IP_RECVERR:
+ {
+ struct errhdr_t {
+ struct sock_extended_err ee;
+ struct sockaddr_in offender;
+ };
+ struct errhdr_t *errh = (struct errhdr_t *)data;
+ struct errhdr_t *target_errh =
+ (struct errhdr_t *)target_data;
+
+ if (len != sizeof(struct errhdr_t) ||
+ tgt_len != sizeof(struct errhdr_t)) {
+ goto unimplemented;
+ }
+ __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
+ __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
+ __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
+ __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
+ __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
+ __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
+ __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
+ host_to_target_sockaddr((unsigned long) &target_errh->offender,
+ (void *) &errh->offender, sizeof(errh->offender));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+
+ case SOL_IPV6:
+ switch (cmsg->cmsg_type) {
+ case IPV6_HOPLIMIT:
+ {
+ uint32_t *v = (uint32_t *)data;
+ uint32_t *t_int = (uint32_t *)target_data;
+
+ if (len != sizeof(uint32_t) ||
+ tgt_len != sizeof(uint32_t)) {
+ goto unimplemented;
+ }
+ __put_user(*v, t_int);
+ break;
+ }
+ case IPV6_RECVERR:
+ {
+ struct errhdr6_t {
+ struct sock_extended_err ee;
+ struct sockaddr_in6 offender;
+ };
+ struct errhdr6_t *errh = (struct errhdr6_t *)data;
+ struct errhdr6_t *target_errh =
+ (struct errhdr6_t *)target_data;
+
+ if (len != sizeof(struct errhdr6_t) ||
+ tgt_len != sizeof(struct errhdr6_t)) {
+ goto unimplemented;
+ }
+ __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
+ __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
+ __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
+ __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
+ __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
+ __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
+ __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
+ host_to_target_sockaddr((unsigned long) &target_errh->offender,
+ (void *) &errh->offender, sizeof(errh->offender));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+
+ default:
+ unimplemented:
+ qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
+ cmsg->cmsg_level, cmsg->cmsg_type);
+ memcpy(target_data, data, MIN(len, tgt_len));
+ if (tgt_len > len) {
+ memset(target_data + len, 0, tgt_len - len);
+ }
+ }
+
+ target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
+ tgt_space = TARGET_CMSG_SPACE(tgt_len);
+ if (msg_controllen < tgt_space) {
+ tgt_space = msg_controllen;
+ }
+ msg_controllen -= tgt_space;
+ space += tgt_space;
+ cmsg = CMSG_NXTHDR(msgh, cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
+ target_cmsg_start);
+ }
+ unlock_user(target_cmsg, target_cmsg_addr, space);
+ the_end:
+ target_msgh->msg_controllen = tswapal(space);
+ return 0;
+}
+
+/* do_setsockopt() Must return target values and target errnos. */
+static abi_long do_setsockopt(int sockfd, int level, int optname,
+ abi_ulong optval_addr, socklen_t optlen)
+{
+ abi_long ret;
+ int val;
+ struct ip_mreqn *ip_mreq;
+ struct ip_mreq_source *ip_mreq_source;
+
+ switch(level) {
+ case SOL_TCP:
+ case SOL_UDP:
+ /* TCP and UDP options all take an 'int' value. */
+ if (optlen < sizeof(uint32_t))
+ return -TARGET_EINVAL;
+
+ if (get_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
+ break;
+ case SOL_IP:
+ switch(optname) {
+ case IP_TOS:
+ case IP_TTL:
+ case IP_HDRINCL:
+ case IP_ROUTER_ALERT:
+ case IP_RECVOPTS:
+ case IP_RETOPTS:
+ case IP_PKTINFO:
+ case IP_MTU_DISCOVER:
+ case IP_RECVERR:
+ case IP_RECVTTL:
+ case IP_RECVTOS:
+#ifdef IP_FREEBIND
+ case IP_FREEBIND:
+#endif
+ case IP_MULTICAST_TTL:
+ case IP_MULTICAST_LOOP:
+ val = 0;
+ if (optlen >= sizeof(uint32_t)) {
+ if (get_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ } else if (optlen >= 1) {
+ if (get_user_u8(val, optval_addr))
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
+ break;
+ case IP_ADD_MEMBERSHIP:
+ case IP_DROP_MEMBERSHIP:
+ if (optlen < sizeof (struct target_ip_mreq) ||
+ optlen > sizeof (struct target_ip_mreqn))
+ return -TARGET_EINVAL;
+
+ ip_mreq = (struct ip_mreqn *) alloca(optlen);
+ target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
+ ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
+ break;
+
+ case IP_BLOCK_SOURCE:
+ case IP_UNBLOCK_SOURCE:
+ case IP_ADD_SOURCE_MEMBERSHIP:
+ case IP_DROP_SOURCE_MEMBERSHIP:
+ if (optlen != sizeof (struct target_ip_mreq_source))
+ return -TARGET_EINVAL;
+
+ ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
+ ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
+ unlock_user (ip_mreq_source, optval_addr, 0);
+ break;
+
+ default:
+ goto unimplemented;
+ }
+ break;
+ case SOL_IPV6:
+ switch (optname) {
+ case IPV6_MTU_DISCOVER:
+ case IPV6_MTU:
+ case IPV6_V6ONLY:
+ case IPV6_RECVPKTINFO:
+ case IPV6_UNICAST_HOPS:
+ case IPV6_MULTICAST_HOPS:
+ case IPV6_MULTICAST_LOOP:
+ case IPV6_RECVERR:
+ case IPV6_RECVHOPLIMIT:
+ case IPV6_2292HOPLIMIT:
+ case IPV6_CHECKSUM:
+ case IPV6_ADDRFORM:
+ case IPV6_2292PKTINFO:
+ case IPV6_RECVTCLASS:
+ case IPV6_RECVRTHDR:
+ case IPV6_2292RTHDR:
+ case IPV6_RECVHOPOPTS:
+ case IPV6_2292HOPOPTS:
+ case IPV6_RECVDSTOPTS:
+ case IPV6_2292DSTOPTS:
+ case IPV6_TCLASS:
+ case IPV6_ADDR_PREFERENCES:
+#ifdef IPV6_RECVPATHMTU
+ case IPV6_RECVPATHMTU:
+#endif
+#ifdef IPV6_TRANSPARENT
+ case IPV6_TRANSPARENT:
+#endif
+#ifdef IPV6_FREEBIND
+ case IPV6_FREEBIND:
+#endif
+#ifdef IPV6_RECVORIGDSTADDR
+ case IPV6_RECVORIGDSTADDR:
+#endif
+ val = 0;
+ if (optlen < sizeof(uint32_t)) {
+ return -TARGET_EINVAL;
+ }
+ if (get_user_u32(val, optval_addr)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &val, sizeof(val)));
+ break;
+ case IPV6_PKTINFO:
+ {
+ struct in6_pktinfo pki;
+
+ if (optlen < sizeof(pki)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
+ return -TARGET_EFAULT;
+ }
+
+ pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
+
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &pki, sizeof(pki)));
+ break;
+ }
+ case IPV6_ADD_MEMBERSHIP:
+ case IPV6_DROP_MEMBERSHIP:
+ {
+ struct ipv6_mreq ipv6mreq;
+
+ if (optlen < sizeof(ipv6mreq)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
+ return -TARGET_EFAULT;
+ }
+
+ ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
+
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &ipv6mreq, sizeof(ipv6mreq)));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+ case SOL_ICMPV6:
+ switch (optname) {
+ case ICMPV6_FILTER:
+ {
+ struct icmp6_filter icmp6f;
+
+ if (optlen > sizeof(icmp6f)) {
+ optlen = sizeof(icmp6f);
+ }
+
+ if (copy_from_user(&icmp6f, optval_addr, optlen)) {
+ return -TARGET_EFAULT;
+ }
+
+ for (val = 0; val < 8; val++) {
+ icmp6f.data[val] = tswap32(icmp6f.data[val]);
+ }
+
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &icmp6f, optlen));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+ case SOL_RAW:
+ switch (optname) {
+ case ICMP_FILTER:
+ case IPV6_CHECKSUM:
+ /* those take an u32 value */
+ if (optlen < sizeof(uint32_t)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (get_user_u32(val, optval_addr)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &val, sizeof(val)));
+ break;
+
+ default:
+ goto unimplemented;
+ }
+ break;
+#if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
+ case SOL_ALG:
+ switch (optname) {
+ case ALG_SET_KEY:
+ {
+ char *alg_key = g_malloc(optlen);
+
+ if (!alg_key) {
+ return -TARGET_ENOMEM;
+ }
+ if (copy_from_user(alg_key, optval_addr, optlen)) {
+ g_free(alg_key);
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ alg_key, optlen));
+ g_free(alg_key);
+ break;
+ }
+ case ALG_SET_AEAD_AUTHSIZE:
+ {
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ NULL, optlen));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+#endif
+ case TARGET_SOL_SOCKET:
+ switch (optname) {
+ case TARGET_SO_RCVTIMEO:
+ {
+ struct timeval tv;
+
+ optname = SO_RCVTIMEO;
+
+set_timeout:
+ if (optlen != sizeof(struct target_timeval)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (copy_from_user_timeval(&tv, optval_addr)) {
+ return -TARGET_EFAULT;
+ }
+
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
+ &tv, sizeof(tv)));
+ return ret;
+ }
+ case TARGET_SO_SNDTIMEO:
+ optname = SO_SNDTIMEO;
+ goto set_timeout;
+ case TARGET_SO_ATTACH_FILTER:
+ {
+ struct target_sock_fprog *tfprog;
+ struct target_sock_filter *tfilter;
+ struct sock_fprog fprog;
+ struct sock_filter *filter;
+ int i;
+
+ if (optlen != sizeof(*tfprog)) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ if (!lock_user_struct(VERIFY_READ, tfilter,
+ tswapal(tfprog->filter), 0)) {
+ unlock_user_struct(tfprog, optval_addr, 1);
+ return -TARGET_EFAULT;
+ }
+
+ fprog.len = tswap16(tfprog->len);
+ filter = g_try_new(struct sock_filter, fprog.len);
+ if (filter == NULL) {
+ unlock_user_struct(tfilter, tfprog->filter, 1);
+ unlock_user_struct(tfprog, optval_addr, 1);
+ return -TARGET_ENOMEM;
+ }
+ for (i = 0; i < fprog.len; i++) {
+ filter[i].code = tswap16(tfilter[i].code);
+ filter[i].jt = tfilter[i].jt;
+ filter[i].jf = tfilter[i].jf;
+ filter[i].k = tswap32(tfilter[i].k);
+ }
+ fprog.filter = filter;
+
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
+ SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
+ g_free(filter);
+
+ unlock_user_struct(tfilter, tfprog->filter, 1);
+ unlock_user_struct(tfprog, optval_addr, 1);
+ return ret;
+ }
+ case TARGET_SO_BINDTODEVICE:
+ {
+ char *dev_ifname, *addr_ifname;
+
+ if (optlen > IFNAMSIZ - 1) {
+ optlen = IFNAMSIZ - 1;
+ }
+ dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
+ if (!dev_ifname) {
+ return -TARGET_EFAULT;
+ }
+ optname = SO_BINDTODEVICE;
+ addr_ifname = alloca(IFNAMSIZ);
+ memcpy(addr_ifname, dev_ifname, optlen);
+ addr_ifname[optlen] = 0;
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
+ addr_ifname, optlen));
+ unlock_user (dev_ifname, optval_addr, 0);
+ return ret;
+ }
+ case TARGET_SO_LINGER:
+ {
+ struct linger lg;
+ struct target_linger *tlg;
+
+ if (optlen != sizeof(struct target_linger)) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(lg.l_onoff, &tlg->l_onoff);
+ __get_user(lg.l_linger, &tlg->l_linger);
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
+ &lg, sizeof(lg)));
+ unlock_user_struct(tlg, optval_addr, 0);
+ return ret;
+ }
+ /* Options with 'int' argument. */
+ case TARGET_SO_DEBUG:
+ optname = SO_DEBUG;
+ break;
+ case TARGET_SO_REUSEADDR:
+ optname = SO_REUSEADDR;
+ break;
+#ifdef SO_REUSEPORT
+ case TARGET_SO_REUSEPORT:
+ optname = SO_REUSEPORT;
+ break;
+#endif
+ case TARGET_SO_TYPE:
+ optname = SO_TYPE;
+ break;
+ case TARGET_SO_ERROR:
+ optname = SO_ERROR;
+ break;
+ case TARGET_SO_DONTROUTE:
+ optname = SO_DONTROUTE;
+ break;
+ case TARGET_SO_BROADCAST:
+ optname = SO_BROADCAST;
+ break;
+ case TARGET_SO_SNDBUF:
+ optname = SO_SNDBUF;
+ break;
+ case TARGET_SO_SNDBUFFORCE:
+ optname = SO_SNDBUFFORCE;
+ break;
+ case TARGET_SO_RCVBUF:
+ optname = SO_RCVBUF;
+ break;
+ case TARGET_SO_RCVBUFFORCE:
+ optname = SO_RCVBUFFORCE;
+ break;
+ case TARGET_SO_KEEPALIVE:
+ optname = SO_KEEPALIVE;
+ break;
+ case TARGET_SO_OOBINLINE:
+ optname = SO_OOBINLINE;
+ break;
+ case TARGET_SO_NO_CHECK:
+ optname = SO_NO_CHECK;
+ break;
+ case TARGET_SO_PRIORITY:
+ optname = SO_PRIORITY;
+ break;
+#ifdef SO_BSDCOMPAT
+ case TARGET_SO_BSDCOMPAT:
+ optname = SO_BSDCOMPAT;
+ break;
+#endif
+ case TARGET_SO_PASSCRED:
+ optname = SO_PASSCRED;
+ break;
+ case TARGET_SO_PASSSEC:
+ optname = SO_PASSSEC;
+ break;
+ case TARGET_SO_TIMESTAMP:
+ optname = SO_TIMESTAMP;
+ break;
+ case TARGET_SO_RCVLOWAT:
+ optname = SO_RCVLOWAT;
+ break;
+ default:
+ goto unimplemented;
+ }
+ if (optlen < sizeof(uint32_t))
+ return -TARGET_EINVAL;
+
+ if (get_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
+ break;
+#ifdef SOL_NETLINK
+ case SOL_NETLINK:
+ switch (optname) {
+ case NETLINK_PKTINFO:
+ case NETLINK_ADD_MEMBERSHIP:
+ case NETLINK_DROP_MEMBERSHIP:
+ case NETLINK_BROADCAST_ERROR:
+ case NETLINK_NO_ENOBUFS:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
+ case NETLINK_LISTEN_ALL_NSID:
+ case NETLINK_CAP_ACK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+ case NETLINK_EXT_ACK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
+ case NETLINK_GET_STRICT_CHK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
+ break;
+ default:
+ goto unimplemented;
+ }
+ val = 0;
+ if (optlen < sizeof(uint32_t)) {
+ return -TARGET_EINVAL;
+ }
+ if (get_user_u32(val, optval_addr)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
+ sizeof(val)));
+ break;
+#endif /* SOL_NETLINK */
+ default:
+ unimplemented:
+ qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
+ level, optname);
+ ret = -TARGET_ENOPROTOOPT;
+ }
+ return ret;
+}
+
+/* do_getsockopt() Must return target values and target errnos. */
+static abi_long do_getsockopt(int sockfd, int level, int optname,
+ abi_ulong optval_addr, abi_ulong optlen)
+{
+ abi_long ret;
+ int len, val;
+ socklen_t lv;
+
+ switch(level) {
+ case TARGET_SOL_SOCKET:
+ level = SOL_SOCKET;
+ switch (optname) {
+ /* These don't just return a single integer */
+ case TARGET_SO_PEERNAME:
+ goto unimplemented;
+ case TARGET_SO_RCVTIMEO: {
+ struct timeval tv;
+ socklen_t tvlen;
+
+ optname = SO_RCVTIMEO;
+
+get_timeout:
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ tvlen = sizeof(tv);
+ ret = get_errno(getsockopt(sockfd, level, optname,
+ &tv, &tvlen));
+ if (ret < 0) {
+ return ret;
+ }
+ if (len > sizeof(struct target_timeval)) {
+ len = sizeof(struct target_timeval);
+ }
+ if (copy_to_user_timeval(optval_addr, &tv)) {
+ return -TARGET_EFAULT;
+ }
+ if (put_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ break;
+ }
+ case TARGET_SO_SNDTIMEO:
+ optname = SO_SNDTIMEO;
+ goto get_timeout;
+ case TARGET_SO_PEERCRED: {
+ struct ucred cr;
+ socklen_t crlen;
+ struct target_ucred *tcr;
+
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ crlen = sizeof(cr);
+ ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
+ &cr, &crlen));
+ if (ret < 0) {
+ return ret;
+ }
+ if (len > crlen) {
+ len = crlen;
+ }
+ if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(cr.pid, &tcr->pid);
+ __put_user(cr.uid, &tcr->uid);
+ __put_user(cr.gid, &tcr->gid);
+ unlock_user_struct(tcr, optval_addr, 1);
+ if (put_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ break;
+ }
+ case TARGET_SO_PEERSEC: {
+ char *name;
+
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+ name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
+ if (!name) {
+ return -TARGET_EFAULT;
+ }
+ lv = len;
+ ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
+ name, &lv));
+ if (put_user_u32(lv, optlen)) {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(name, optval_addr, lv);
+ break;
+ }
+ case TARGET_SO_LINGER:
+ {
+ struct linger lg;
+ socklen_t lglen;
+ struct target_linger *tlg;
+
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ lglen = sizeof(lg);
+ ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
+ &lg, &lglen));
+ if (ret < 0) {
+ return ret;
+ }
+ if (len > lglen) {
+ len = lglen;
+ }
+ if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(lg.l_onoff, &tlg->l_onoff);
+ __put_user(lg.l_linger, &tlg->l_linger);
+ unlock_user_struct(tlg, optval_addr, 1);
+ if (put_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ break;
+ }
+ /* Options with 'int' argument. */
+ case TARGET_SO_DEBUG:
+ optname = SO_DEBUG;
+ goto int_case;
+ case TARGET_SO_REUSEADDR:
+ optname = SO_REUSEADDR;
+ goto int_case;
+#ifdef SO_REUSEPORT
+ case TARGET_SO_REUSEPORT:
+ optname = SO_REUSEPORT;
+ goto int_case;
+#endif
+ case TARGET_SO_TYPE:
+ optname = SO_TYPE;
+ goto int_case;
+ case TARGET_SO_ERROR:
+ optname = SO_ERROR;
+ goto int_case;
+ case TARGET_SO_DONTROUTE:
+ optname = SO_DONTROUTE;
+ goto int_case;
+ case TARGET_SO_BROADCAST:
+ optname = SO_BROADCAST;
+ goto int_case;
+ case TARGET_SO_SNDBUF:
+ optname = SO_SNDBUF;
+ goto int_case;
+ case TARGET_SO_RCVBUF:
+ optname = SO_RCVBUF;
+ goto int_case;
+ case TARGET_SO_KEEPALIVE:
+ optname = SO_KEEPALIVE;
+ goto int_case;
+ case TARGET_SO_OOBINLINE:
+ optname = SO_OOBINLINE;
+ goto int_case;
+ case TARGET_SO_NO_CHECK:
+ optname = SO_NO_CHECK;
+ goto int_case;
+ case TARGET_SO_PRIORITY:
+ optname = SO_PRIORITY;
+ goto int_case;
+#ifdef SO_BSDCOMPAT
+ case TARGET_SO_BSDCOMPAT:
+ optname = SO_BSDCOMPAT;
+ goto int_case;
+#endif
+ case TARGET_SO_PASSCRED:
+ optname = SO_PASSCRED;
+ goto int_case;
+ case TARGET_SO_TIMESTAMP:
+ optname = SO_TIMESTAMP;
+ goto int_case;
+ case TARGET_SO_RCVLOWAT:
+ optname = SO_RCVLOWAT;
+ goto int_case;
+ case TARGET_SO_ACCEPTCONN:
+ optname = SO_ACCEPTCONN;
+ goto int_case;
+ case TARGET_SO_PROTOCOL:
+ optname = SO_PROTOCOL;
+ goto int_case;
+ case TARGET_SO_DOMAIN:
+ optname = SO_DOMAIN;
+ goto int_case;
+ default:
+ goto int_case;
+ }
+ break;
+ case SOL_TCP:
+ case SOL_UDP:
+ /* TCP and UDP options all take an 'int' value. */
+ int_case:
+ if (get_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ if (len < 0)
+ return -TARGET_EINVAL;
+ lv = sizeof(lv);
+ ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
+ if (ret < 0)
+ return ret;
+ if (optname == SO_TYPE) {
+ val = host_to_target_sock_type(val);
+ }
+ if (len > lv)
+ len = lv;
+ if (len == 4) {
+ if (put_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ } else {
+ if (put_user_u8(val, optval_addr))
+ return -TARGET_EFAULT;
+ }
+ if (put_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ break;
+ case SOL_IP:
+ switch(optname) {
+ case IP_TOS:
+ case IP_TTL:
+ case IP_HDRINCL:
+ case IP_ROUTER_ALERT:
+ case IP_RECVOPTS:
+ case IP_RETOPTS:
+ case IP_PKTINFO:
+ case IP_MTU_DISCOVER:
+ case IP_RECVERR:
+ case IP_RECVTOS:
+#ifdef IP_FREEBIND
+ case IP_FREEBIND:
+#endif
+ case IP_MULTICAST_TTL:
+ case IP_MULTICAST_LOOP:
+ if (get_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ if (len < 0)
+ return -TARGET_EINVAL;
+ lv = sizeof(lv);
+ ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
+ if (ret < 0)
+ return ret;
+ if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
+ len = 1;
+ if (put_user_u32(len, optlen)
+ || put_user_u8(val, optval_addr))
+ return -TARGET_EFAULT;
+ } else {
+ if (len > sizeof(int))
+ len = sizeof(int);
+ if (put_user_u32(len, optlen)
+ || put_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ }
+ break;
+ default:
+ ret = -TARGET_ENOPROTOOPT;
+ break;
+ }
+ break;
+ case SOL_IPV6:
+ switch (optname) {
+ case IPV6_MTU_DISCOVER:
+ case IPV6_MTU:
+ case IPV6_V6ONLY:
+ case IPV6_RECVPKTINFO:
+ case IPV6_UNICAST_HOPS:
+ case IPV6_MULTICAST_HOPS:
+ case IPV6_MULTICAST_LOOP:
+ case IPV6_RECVERR:
+ case IPV6_RECVHOPLIMIT:
+ case IPV6_2292HOPLIMIT:
+ case IPV6_CHECKSUM:
+ case IPV6_ADDRFORM:
+ case IPV6_2292PKTINFO:
+ case IPV6_RECVTCLASS:
+ case IPV6_RECVRTHDR:
+ case IPV6_2292RTHDR:
+ case IPV6_RECVHOPOPTS:
+ case IPV6_2292HOPOPTS:
+ case IPV6_RECVDSTOPTS:
+ case IPV6_2292DSTOPTS:
+ case IPV6_TCLASS:
+ case IPV6_ADDR_PREFERENCES:
+#ifdef IPV6_RECVPATHMTU
+ case IPV6_RECVPATHMTU:
+#endif
+#ifdef IPV6_TRANSPARENT
+ case IPV6_TRANSPARENT:
+#endif
+#ifdef IPV6_FREEBIND
+ case IPV6_FREEBIND:
+#endif
+#ifdef IPV6_RECVORIGDSTADDR
+ case IPV6_RECVORIGDSTADDR:
+#endif
+ if (get_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ if (len < 0)
+ return -TARGET_EINVAL;
+ lv = sizeof(lv);
+ ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
+ if (ret < 0)
+ return ret;
+ if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
+ len = 1;
+ if (put_user_u32(len, optlen)
+ || put_user_u8(val, optval_addr))
+ return -TARGET_EFAULT;
+ } else {
+ if (len > sizeof(int))
+ len = sizeof(int);
+ if (put_user_u32(len, optlen)
+ || put_user_u32(val, optval_addr))
+ return -TARGET_EFAULT;
+ }
+ break;
+ default:
+ ret = -TARGET_ENOPROTOOPT;
+ break;
+ }
+ break;
+#ifdef SOL_NETLINK
+ case SOL_NETLINK:
+ switch (optname) {
+ case NETLINK_PKTINFO:
+ case NETLINK_BROADCAST_ERROR:
+ case NETLINK_NO_ENOBUFS:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
+ case NETLINK_LISTEN_ALL_NSID:
+ case NETLINK_CAP_ACK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+ case NETLINK_EXT_ACK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
+ case NETLINK_GET_STRICT_CHK:
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len != sizeof(val)) {
+ return -TARGET_EINVAL;
+ }
+ lv = len;
+ ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
+ if (ret < 0) {
+ return ret;
+ }
+ if (put_user_u32(lv, optlen)
+ || put_user_u32(val, optval_addr)) {
+ return -TARGET_EFAULT;
+ }
+ break;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
+ case NETLINK_LIST_MEMBERSHIPS:
+ {
+ uint32_t *results;
+ int i;
+ if (get_user_u32(len, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+ results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
+ if (!results) {
+ return -TARGET_EFAULT;
+ }
+ lv = len;
+ ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
+ if (ret < 0) {
+ unlock_user(results, optval_addr, 0);
+ return ret;
+ }
+ /* swap host endianess to target endianess. */
+ for (i = 0; i < (len / sizeof(uint32_t)); i++) {
+ results[i] = tswap32(results[i]);
+ }
+ if (put_user_u32(lv, optlen)) {
+ return -TARGET_EFAULT;
+ }
+ unlock_user(results, optval_addr, 0);
+ break;
+ }
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
+ default:
+ goto unimplemented;
+ }
+ break;
+#endif /* SOL_NETLINK */
+ default:
+ unimplemented:
+ qemu_log_mask(LOG_UNIMP,
+ "getsockopt level=%d optname=%d not yet supported\n",
+ level, optname);
+ ret = -TARGET_EOPNOTSUPP;
+ break;
+ }
+ return ret;
+}
+
+/* Convert target low/high pair representing file offset into the host
+ * low/high pair. This function doesn't handle offsets bigger than 64 bits
+ * as the kernel doesn't handle them either.
+ */
+static void target_to_host_low_high(abi_ulong tlow,
+ abi_ulong thigh,
+ unsigned long *hlow,
+ unsigned long *hhigh)
+{
+ uint64_t off = tlow |
+ ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
+ TARGET_LONG_BITS / 2;
+
+ *hlow = off;
+ *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
+}
+
+static struct iovec *lock_iovec(int type, abi_ulong target_addr,
+ abi_ulong count, int copy)
+{
+ struct target_iovec *target_vec;
+ struct iovec *vec;
+ abi_ulong total_len, max_len;
+ int i;
+ int err = 0;
+ bool bad_address = false;
+
+ if (count == 0) {
+ errno = 0;
+ return NULL;
+ }
+ if (count > IOV_MAX) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ vec = g_try_new0(struct iovec, count);
+ if (vec == NULL) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ target_vec = lock_user(VERIFY_READ, target_addr,
+ count * sizeof(struct target_iovec), 1);
+ if (target_vec == NULL) {
+ err = EFAULT;
+ goto fail2;
+ }
+
+ /* ??? If host page size > target page size, this will result in a
+ value larger than what we can actually support. */
+ max_len = 0x7fffffff & TARGET_PAGE_MASK;
+ total_len = 0;
+
+ for (i = 0; i < count; i++) {
+ abi_ulong base = tswapal(target_vec[i].iov_base);
+ abi_long len = tswapal(target_vec[i].iov_len);
+
+ if (len < 0) {
+ err = EINVAL;
+ goto fail;
+ } else if (len == 0) {
+ /* Zero length pointer is ignored. */
+ vec[i].iov_base = 0;
+ } else {
+ vec[i].iov_base = lock_user(type, base, len, copy);
+ /* If the first buffer pointer is bad, this is a fault. But
+ * subsequent bad buffers will result in a partial write; this
+ * is realized by filling the vector with null pointers and
+ * zero lengths. */
+ if (!vec[i].iov_base) {
+ if (i == 0) {
+ err = EFAULT;
+ goto fail;
+ } else {
+ bad_address = true;
+ }
+ }
+ if (bad_address) {
+ len = 0;
+ }
+ if (len > max_len - total_len) {
+ len = max_len - total_len;
+ }
+ }
+ vec[i].iov_len = len;
+ total_len += len;
+ }
+
+ unlock_user(target_vec, target_addr, 0);
+ return vec;
+
+ fail:
+ while (--i >= 0) {
+ if (tswapal(target_vec[i].iov_len) > 0) {
+ unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
+ }
+ }
+ unlock_user(target_vec, target_addr, 0);
+ fail2:
+ g_free(vec);
+ errno = err;
+ return NULL;
+}
+
+static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
+ abi_ulong count, int copy)
+{
+ struct target_iovec *target_vec;
+ int i;
+
+ target_vec = lock_user(VERIFY_READ, target_addr,
+ count * sizeof(struct target_iovec), 1);
+ if (target_vec) {
+ for (i = 0; i < count; i++) {
+ abi_ulong base = tswapal(target_vec[i].iov_base);
+ abi_long len = tswapal(target_vec[i].iov_len);
+ if (len < 0) {
+ break;
+ }
+ unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
+ }
+ unlock_user(target_vec, target_addr, 0);
+ }
+
+ g_free(vec);
+}
+
+static inline int target_to_host_sock_type(int *type)
+{
+ int host_type = 0;
+ int target_type = *type;
+
+ switch (target_type & TARGET_SOCK_TYPE_MASK) {
+ case TARGET_SOCK_DGRAM:
+ host_type = SOCK_DGRAM;
+ break;
+ case TARGET_SOCK_STREAM:
+ host_type = SOCK_STREAM;
+ break;
+ default:
+ host_type = target_type & TARGET_SOCK_TYPE_MASK;
+ break;
+ }
+ if (target_type & TARGET_SOCK_CLOEXEC) {
+#if defined(SOCK_CLOEXEC)
+ host_type |= SOCK_CLOEXEC;
+#else
+ return -TARGET_EINVAL;
+#endif
+ }
+ if (target_type & TARGET_SOCK_NONBLOCK) {
+#if defined(SOCK_NONBLOCK)
+ host_type |= SOCK_NONBLOCK;
+#elif !defined(O_NONBLOCK)
+ return -TARGET_EINVAL;
+#endif
+ }
+ *type = host_type;
+ return 0;
+}
+
+/* Try to emulate socket type flags after socket creation. */
+static int sock_flags_fixup(int fd, int target_type)
+{
+#if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
+ if (target_type & TARGET_SOCK_NONBLOCK) {
+ int flags = fcntl(fd, F_GETFL);
+ if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
+ close(fd);
+ return -TARGET_EINVAL;
+ }
+ }
+#endif
+ return fd;
+}
+
+/* do_socket() Must return target values and target errnos. */
+static abi_long do_socket(int domain, int type, int protocol)
+{
+ int target_type = type;
+ int ret;
+
+ ret = target_to_host_sock_type(&type);
+ if (ret) {
+ return ret;
+ }
+
+ if (domain == PF_NETLINK && !(
+#ifdef CONFIG_RTNETLINK
+ protocol == NETLINK_ROUTE ||
+#endif
+ protocol == NETLINK_KOBJECT_UEVENT ||
+ protocol == NETLINK_AUDIT)) {
+ return -TARGET_EPROTONOSUPPORT;
+ }
+
+ if (domain == AF_PACKET ||
+ (domain == AF_INET && type == SOCK_PACKET)) {
+ protocol = tswap16(protocol);
+ }
+
+ ret = get_errno(socket(domain, type, protocol));
+ if (ret >= 0) {
+ ret = sock_flags_fixup(ret, target_type);
+ if (type == SOCK_PACKET) {
+ /* Manage an obsolete case :
+ * if socket type is SOCK_PACKET, bind by name
+ */
+ fd_trans_register(ret, &target_packet_trans);
+ } else if (domain == PF_NETLINK) {
+ switch (protocol) {
+#ifdef CONFIG_RTNETLINK
+ case NETLINK_ROUTE:
+ fd_trans_register(ret, &target_netlink_route_trans);
+ break;
+#endif
+ case NETLINK_KOBJECT_UEVENT:
+ /* nothing to do: messages are strings */
+ break;
+ case NETLINK_AUDIT:
+ fd_trans_register(ret, &target_netlink_audit_trans);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+ }
+ return ret;
+}
+
+/* do_bind() Must return target values and target errnos. */
+static abi_long do_bind(int sockfd, abi_ulong target_addr,
+ socklen_t addrlen)
+{
+ void *addr;
+ abi_long ret;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ addr = alloca(addrlen+1);
+
+ ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
+ if (ret)
+ return ret;
+
+ return get_errno(bind(sockfd, addr, addrlen));
+}
+
+/* do_connect() Must return target values and target errnos. */
+static abi_long do_connect(int sockfd, abi_ulong target_addr,
+ socklen_t addrlen)
+{
+ void *addr;
+ abi_long ret;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ addr = alloca(addrlen+1);
+
+ ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
+ if (ret)
+ return ret;
+
+ return get_errno(safe_connect(sockfd, addr, addrlen));
+}
+
+/* do_sendrecvmsg_locked() Must return target values and target errnos. */
+static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
+ int flags, int send)
+{
+ abi_long ret, len;
+ struct msghdr msg;
+ abi_ulong count;
+ struct iovec *vec;
+ abi_ulong target_vec;
+
+ if (msgp->msg_name) {
+ msg.msg_namelen = tswap32(msgp->msg_namelen);
+ msg.msg_name = alloca(msg.msg_namelen+1);
+ ret = target_to_host_sockaddr(fd, msg.msg_name,
+ tswapal(msgp->msg_name),
+ msg.msg_namelen);
+ if (ret == -TARGET_EFAULT) {
+ /* For connected sockets msg_name and msg_namelen must
+ * be ignored, so returning EFAULT immediately is wrong.
+ * Instead, pass a bad msg_name to the host kernel, and
+ * let it decide whether to return EFAULT or not.
+ */
+ msg.msg_name = (void *)-1;
+ } else if (ret) {
+ goto out2;
+ }
+ } else {
+ msg.msg_name = NULL;
+ msg.msg_namelen = 0;
+ }
+ msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
+ msg.msg_control = alloca(msg.msg_controllen);
+ memset(msg.msg_control, 0, msg.msg_controllen);
+
+ msg.msg_flags = tswap32(msgp->msg_flags);
+
+ count = tswapal(msgp->msg_iovlen);
+ target_vec = tswapal(msgp->msg_iov);
+
+ if (count > IOV_MAX) {
+ /* sendrcvmsg returns a different errno for this condition than
+ * readv/writev, so we must catch it here before lock_iovec() does.
+ */
+ ret = -TARGET_EMSGSIZE;
+ goto out2;
+ }
+
+ vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
+ target_vec, count, send);
+ if (vec == NULL) {
+ ret = -host_to_target_errno(errno);
+ goto out2;
+ }
+ msg.msg_iovlen = count;
+ msg.msg_iov = vec;
+
+ if (send) {
+ if (fd_trans_target_to_host_data(fd)) {
+ void *host_msg;
+
+ host_msg = g_malloc(msg.msg_iov->iov_len);
+ memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
+ ret = fd_trans_target_to_host_data(fd)(host_msg,
+ msg.msg_iov->iov_len);
+ if (ret >= 0) {
+ msg.msg_iov->iov_base = host_msg;
+ ret = get_errno(safe_sendmsg(fd, &msg, flags));
+ }
+ g_free(host_msg);
+ } else {
+ ret = target_to_host_cmsg(&msg, msgp);
+ if (ret == 0) {
+ ret = get_errno(safe_sendmsg(fd, &msg, flags));
+ }
+ }
+ } else {
+ ret = get_errno(safe_recvmsg(fd, &msg, flags));
+ if (!is_error(ret)) {
+ len = ret;
+ if (fd_trans_host_to_target_data(fd)) {
+ ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
+ MIN(msg.msg_iov->iov_len, len));
+ } else {
+ ret = host_to_target_cmsg(msgp, &msg);
+ }
+ if (!is_error(ret)) {
+ msgp->msg_namelen = tswap32(msg.msg_namelen);
+ msgp->msg_flags = tswap32(msg.msg_flags);
+ if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
+ ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
+ msg.msg_name, msg.msg_namelen);
+ if (ret) {
+ goto out;
+ }
+ }
+
+ ret = len;
+ }
+ }
+ }
+
+out:
+ unlock_iovec(vec, target_vec, count, !send);
+out2:
+ return ret;
+}
+
+static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
+ int flags, int send)
+{
+ abi_long ret;
+ struct target_msghdr *msgp;
+
+ if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
+ msgp,
+ target_msg,
+ send ? 1 : 0)) {
+ return -TARGET_EFAULT;
+ }
+ ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
+ unlock_user_struct(msgp, target_msg, send ? 0 : 1);
+ return ret;
+}
+
+/* We don't rely on the C library to have sendmmsg/recvmmsg support,
+ * so it might not have this *mmsg-specific flag either.
+ */
+#ifndef MSG_WAITFORONE
+#define MSG_WAITFORONE 0x10000
+#endif
+
+static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
+ unsigned int vlen, unsigned int flags,
+ int send)
+{
+ struct target_mmsghdr *mmsgp;
+ abi_long ret = 0;
+ int i;
+
+ if (vlen > UIO_MAXIOV) {
+ vlen = UIO_MAXIOV;
+ }
+
+ mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
+ if (!mmsgp) {
+ return -TARGET_EFAULT;
+ }
+
+ for (i = 0; i < vlen; i++) {
+ ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
+ if (is_error(ret)) {
+ break;
+ }
+ mmsgp[i].msg_len = tswap32(ret);
+ /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
+ if (flags & MSG_WAITFORONE) {
+ flags |= MSG_DONTWAIT;
+ }
+ }
+
+ unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
+
+ /* Return number of datagrams sent if we sent any at all;
+ * otherwise return the error.
+ */
+ if (i) {
+ return i;
+ }
+ return ret;
+}
+
+/* do_accept4() Must return target values and target errnos. */
+static abi_long do_accept4(int fd, abi_ulong target_addr,
+ abi_ulong target_addrlen_addr, int flags)
+{
+ socklen_t addrlen, ret_addrlen;
+ void *addr;
+ abi_long ret;
+ int host_flags;
+
+ host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
+
+ if (target_addr == 0) {
+ return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
+ }
+
+ /* linux returns EFAULT if addrlen pointer is invalid */
+ if (get_user_u32(addrlen, target_addrlen_addr))
+ return -TARGET_EFAULT;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
+ return -TARGET_EFAULT;
+ }
+
+ addr = alloca(addrlen);
+
+ ret_addrlen = addrlen;
+ ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+}
+
+/* do_getpeername() Must return target values and target errnos. */
+static abi_long do_getpeername(int fd, abi_ulong target_addr,
+ abi_ulong target_addrlen_addr)
+{
+ socklen_t addrlen, ret_addrlen;
+ void *addr;
+ abi_long ret;
+
+ if (get_user_u32(addrlen, target_addrlen_addr))
+ return -TARGET_EFAULT;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
+ return -TARGET_EFAULT;
+ }
+
+ addr = alloca(addrlen);
+
+ ret_addrlen = addrlen;
+ ret = get_errno(getpeername(fd, addr, &ret_addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+}
+
+/* do_getsockname() Must return target values and target errnos. */
+static abi_long do_getsockname(int fd, abi_ulong target_addr,
+ abi_ulong target_addrlen_addr)
+{
+ socklen_t addrlen, ret_addrlen;
+ void *addr;
+ abi_long ret;
+
+ if (get_user_u32(addrlen, target_addrlen_addr))
+ return -TARGET_EFAULT;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
+ return -TARGET_EFAULT;
+ }
+
+ addr = alloca(addrlen);
+
+ ret_addrlen = addrlen;
+ ret = get_errno(getsockname(fd, addr, &ret_addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+}
+
+/* do_socketpair() Must return target values and target errnos. */
+static abi_long do_socketpair(int domain, int type, int protocol,
+ abi_ulong target_tab_addr)
+{
+ int tab[2];
+ abi_long ret;
+
+ target_to_host_sock_type(&type);
+
+ ret = get_errno(socketpair(domain, type, protocol, tab));
+ if (!is_error(ret)) {
+ if (put_user_s32(tab[0], target_tab_addr)
+ || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
+ ret = -TARGET_EFAULT;
+ }
+ return ret;
+}
+
+/* do_sendto() Must return target values and target errnos. */
+static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
+ abi_ulong target_addr, socklen_t addrlen)
+{
+ void *addr;
+ void *host_msg;
+ void *copy_msg = NULL;
+ abi_long ret;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ host_msg = lock_user(VERIFY_READ, msg, len, 1);
+ if (!host_msg)
+ return -TARGET_EFAULT;
+ if (fd_trans_target_to_host_data(fd)) {
+ copy_msg = host_msg;
+ host_msg = g_malloc(len);
+ memcpy(host_msg, copy_msg, len);
+ ret = fd_trans_target_to_host_data(fd)(host_msg, len);
+ if (ret < 0) {
+ goto fail;
+ }
+ }
+ if (target_addr) {
+ addr = alloca(addrlen+1);
+ ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
+ if (ret) {
+ goto fail;
+ }
+ ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
+ } else {
+ ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
+ }
+fail:
+ if (copy_msg) {
+ g_free(host_msg);
+ host_msg = copy_msg;
+ }
+ unlock_user(host_msg, msg, 0);
+ return ret;
+}
+
+/* do_recvfrom() Must return target values and target errnos. */
+static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
+ abi_ulong target_addr,
+ abi_ulong target_addrlen)
+{
+ socklen_t addrlen, ret_addrlen;
+ void *addr;
+ void *host_msg;
+ abi_long ret;
+
+ host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
+ if (!host_msg)
+ return -TARGET_EFAULT;
+ if (target_addr) {
+ if (get_user_u32(addrlen, target_addrlen)) {
+ ret = -TARGET_EFAULT;
+ goto fail;
+ }
+ if ((int)addrlen < 0) {
+ ret = -TARGET_EINVAL;
+ goto fail;
+ }
+ addr = alloca(addrlen);
+ ret_addrlen = addrlen;
+ ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
+ addr, &ret_addrlen));
+ } else {
+ addr = NULL; /* To keep compiler quiet. */
+ addrlen = 0; /* To keep compiler quiet. */
+ ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
+ }
+ if (!is_error(ret)) {
+ if (fd_trans_host_to_target_data(fd)) {
+ abi_long trans;
+ trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
+ if (is_error(trans)) {
+ ret = trans;
+ goto fail;
+ }
+ }
+ if (target_addr) {
+ host_to_target_sockaddr(target_addr, addr,
+ MIN(addrlen, ret_addrlen));
+ if (put_user_u32(ret_addrlen, target_addrlen)) {
+ ret = -TARGET_EFAULT;
+ goto fail;
+ }
+ }
+ unlock_user(host_msg, msg, len);
+ } else {
+fail:
+ unlock_user(host_msg, msg, 0);
+ }
+ return ret;
+}
+
+#ifdef TARGET_NR_socketcall
+/* do_socketcall() must return target values and target errnos. */
+static abi_long do_socketcall(int num, abi_ulong vptr)
+{
+ static const unsigned nargs[] = { /* number of arguments per operation */
+ [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
+ [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
+ [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
+ [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
+ [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
+ [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
+ [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
+ [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
+ [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
+ [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
+ [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
+ [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
+ [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
+ [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
+ [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
+ [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
+ [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
+ [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
+ [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
+ [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
+ };
+ abi_long a[6]; /* max 6 args */
+ unsigned i;
+
+ /* check the range of the first argument num */
+ /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
+ if (num < 1 || num > TARGET_SYS_SENDMMSG) {
+ return -TARGET_EINVAL;
+ }
+ /* ensure we have space for args */
+ if (nargs[num] > ARRAY_SIZE(a)) {
+ return -TARGET_EINVAL;
+ }
+ /* collect the arguments in a[] according to nargs[] */
+ for (i = 0; i < nargs[num]; ++i) {
+ if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
+ return -TARGET_EFAULT;
+ }
+ }
+ /* now when we have the args, invoke the appropriate underlying function */
+ switch (num) {
+ case TARGET_SYS_SOCKET: /* domain, type, protocol */
+ return do_socket(a[0], a[1], a[2]);
+ case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
+ return do_bind(a[0], a[1], a[2]);
+ case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
+ return do_connect(a[0], a[1], a[2]);
+ case TARGET_SYS_LISTEN: /* sockfd, backlog */
+ return get_errno(listen(a[0], a[1]));
+ case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
+ return do_accept4(a[0], a[1], a[2], 0);
+ case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
+ return do_getsockname(a[0], a[1], a[2]);
+ case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
+ return do_getpeername(a[0], a[1], a[2]);
+ case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
+ return do_socketpair(a[0], a[1], a[2], a[3]);
+ case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
+ return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
+ case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
+ return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
+ case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
+ return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
+ case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
+ return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
+ case TARGET_SYS_SHUTDOWN: /* sockfd, how */
+ return get_errno(shutdown(a[0], a[1]));
+ case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
+ return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
+ case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
+ return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
+ case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
+ return do_sendrecvmsg(a[0], a[1], a[2], 1);
+ case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
+ return do_sendrecvmsg(a[0], a[1], a[2], 0);
+ case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
+ return do_accept4(a[0], a[1], a[2], a[3]);
+ case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
+ return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
+ case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
+ return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
+ default:
+ qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
+ return -TARGET_EINVAL;
+ }
+}
+#endif
+
+#define N_SHM_REGIONS 32
+
+static struct shm_region {
+ abi_ulong start;
+ abi_ulong size;
+ bool in_use;
+} shm_regions[N_SHM_REGIONS];
+
+#ifndef TARGET_SEMID64_DS
+/* asm-generic version of this struct */
+struct target_semid64_ds
+{
+ struct target_ipc_perm sem_perm;
+ abi_ulong sem_otime;
+#if TARGET_ABI_BITS == 32
+ abi_ulong __unused1;
+#endif
+ abi_ulong sem_ctime;
+#if TARGET_ABI_BITS == 32
+ abi_ulong __unused2;
+#endif
+ abi_ulong sem_nsems;
+ abi_ulong __unused3;
+ abi_ulong __unused4;
+};
+#endif
+
+static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
+ abi_ulong target_addr)
+{
+ struct target_ipc_perm *target_ip;
+ struct target_semid64_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
+ return -TARGET_EFAULT;
+ target_ip = &(target_sd->sem_perm);
+ host_ip->__key = tswap32(target_ip->__key);
+ host_ip->uid = tswap32(target_ip->uid);
+ host_ip->gid = tswap32(target_ip->gid);
+ host_ip->cuid = tswap32(target_ip->cuid);
+ host_ip->cgid = tswap32(target_ip->cgid);
+#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
+ host_ip->mode = tswap32(target_ip->mode);
+#else
+ host_ip->mode = tswap16(target_ip->mode);
+#endif
+#if defined(TARGET_PPC)
+ host_ip->__seq = tswap32(target_ip->__seq);
+#else
+ host_ip->__seq = tswap16(target_ip->__seq);
+#endif
+ unlock_user_struct(target_sd, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
+ struct ipc_perm *host_ip)
+{
+ struct target_ipc_perm *target_ip;
+ struct target_semid64_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
+ return -TARGET_EFAULT;
+ target_ip = &(target_sd->sem_perm);
+ target_ip->__key = tswap32(host_ip->__key);
+ target_ip->uid = tswap32(host_ip->uid);
+ target_ip->gid = tswap32(host_ip->gid);
+ target_ip->cuid = tswap32(host_ip->cuid);
+ target_ip->cgid = tswap32(host_ip->cgid);
+#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
+ target_ip->mode = tswap32(host_ip->mode);
+#else
+ target_ip->mode = tswap16(host_ip->mode);
+#endif
+#if defined(TARGET_PPC)
+ target_ip->__seq = tswap32(host_ip->__seq);
+#else
+ target_ip->__seq = tswap16(host_ip->__seq);
+#endif
+ unlock_user_struct(target_sd, target_addr, 1);
+ return 0;
+}
+
+static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
+ abi_ulong target_addr)
+{
+ struct target_semid64_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
+ return -TARGET_EFAULT;
+ if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
+ return -TARGET_EFAULT;
+ host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
+ host_sd->sem_otime = tswapal(target_sd->sem_otime);
+ host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
+ unlock_user_struct(target_sd, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
+ struct semid_ds *host_sd)
+{
+ struct target_semid64_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
+ return -TARGET_EFAULT;
+ if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
+ return -TARGET_EFAULT;
+ target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
+ target_sd->sem_otime = tswapal(host_sd->sem_otime);
+ target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
+ unlock_user_struct(target_sd, target_addr, 1);
+ return 0;
+}
+
+struct target_seminfo {
+ int semmap;
+ int semmni;
+ int semmns;
+ int semmnu;
+ int semmsl;
+ int semopm;
+ int semume;
+ int semusz;
+ int semvmx;
+ int semaem;
+};
+
+static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
+ struct seminfo *host_seminfo)
+{
+ struct target_seminfo *target_seminfo;
+ if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
+ return -TARGET_EFAULT;
+ __put_user(host_seminfo->semmap, &target_seminfo->semmap);
+ __put_user(host_seminfo->semmni, &target_seminfo->semmni);
+ __put_user(host_seminfo->semmns, &target_seminfo->semmns);
+ __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
+ __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
+ __put_user(host_seminfo->semopm, &target_seminfo->semopm);
+ __put_user(host_seminfo->semume, &target_seminfo->semume);
+ __put_user(host_seminfo->semusz, &target_seminfo->semusz);
+ __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
+ __put_user(host_seminfo->semaem, &target_seminfo->semaem);
+ unlock_user_struct(target_seminfo, target_addr, 1);
+ return 0;
+}
+
+union semun {
+ int val;
+ struct semid_ds *buf;
+ unsigned short *array;
+ struct seminfo *__buf;
+};
+
+union target_semun {
+ int val;
+ abi_ulong buf;
+ abi_ulong array;
+ abi_ulong __buf;
+};
+
+static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
+ abi_ulong target_addr)
+{
+ int nsems;
+ unsigned short *array;
+ union semun semun;
+ struct semid_ds semid_ds;
+ int i, ret;
+
+ semun.buf = &semid_ds;
+
+ ret = semctl(semid, 0, IPC_STAT, semun);
+ if (ret == -1)
+ return get_errno(ret);
+
+ nsems = semid_ds.sem_nsems;
+
+ *host_array = g_try_new(unsigned short, nsems);
+ if (!*host_array) {
+ return -TARGET_ENOMEM;
+ }
+ array = lock_user(VERIFY_READ, target_addr,
+ nsems*sizeof(unsigned short), 1);
+ if (!array) {
+ g_free(*host_array);
+ return -TARGET_EFAULT;
+ }
+
+ for(i=0; i<nsems; i++) {
+ __get_user((*host_array)[i], &array[i]);
+ }
+ unlock_user(array, target_addr, 0);
+
+ return 0;
+}
+
+static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
+ unsigned short **host_array)
+{
+ int nsems;
+ unsigned short *array;
+ union semun semun;
+ struct semid_ds semid_ds;
+ int i, ret;
+
+ semun.buf = &semid_ds;
+
+ ret = semctl(semid, 0, IPC_STAT, semun);
+ if (ret == -1)
+ return get_errno(ret);
+
+ nsems = semid_ds.sem_nsems;
+
+ array = lock_user(VERIFY_WRITE, target_addr,
+ nsems*sizeof(unsigned short), 0);
+ if (!array)
+ return -TARGET_EFAULT;
+
+ for(i=0; i<nsems; i++) {
+ __put_user((*host_array)[i], &array[i]);
+ }
+ g_free(*host_array);
+ unlock_user(array, target_addr, 1);
+
+ return 0;
+}
+
+static inline abi_long do_semctl(int semid, int semnum, int cmd,
+ abi_ulong target_arg)
+{
+ union target_semun target_su = { .buf = target_arg };
+ union semun arg;
+ struct semid_ds dsarg;
+ unsigned short *array = NULL;
+ struct seminfo seminfo;
+ abi_long ret = -TARGET_EINVAL;
+ abi_long err;
+ cmd &= 0xff;
+
+ switch( cmd ) {
+ case GETVAL:
+ case SETVAL:
+ /* In 64 bit cross-endian situations, we will erroneously pick up
+ * the wrong half of the union for the "val" element. To rectify
+ * this, the entire 8-byte structure is byteswapped, followed by
+ * a swap of the 4 byte val field. In other cases, the data is
+ * already in proper host byte order. */
+ if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
+ target_su.buf = tswapal(target_su.buf);
+ arg.val = tswap32(target_su.val);
+ } else {
+ arg.val = target_su.val;
+ }
+ ret = get_errno(semctl(semid, semnum, cmd, arg));
+ break;
+ case GETALL:
+ case SETALL:
+ err = target_to_host_semarray(semid, &array, target_su.array);
+ if (err)
+ return err;
+ arg.array = array;
+ ret = get_errno(semctl(semid, semnum, cmd, arg));
+ err = host_to_target_semarray(semid, target_su.array, &array);
+ if (err)
+ return err;
+ break;
+ case IPC_STAT:
+ case IPC_SET:
+ case SEM_STAT:
+ err = target_to_host_semid_ds(&dsarg, target_su.buf);
+ if (err)
+ return err;
+ arg.buf = &dsarg;
+ ret = get_errno(semctl(semid, semnum, cmd, arg));
+ err = host_to_target_semid_ds(target_su.buf, &dsarg);
+ if (err)
+ return err;
+ break;
+ case IPC_INFO:
+ case SEM_INFO:
+ arg.__buf = &seminfo;
+ ret = get_errno(semctl(semid, semnum, cmd, arg));
+ err = host_to_target_seminfo(target_su.__buf, &seminfo);
+ if (err)
+ return err;
+ break;
+ case IPC_RMID:
+ case GETPID:
+ case GETNCNT:
+ case GETZCNT:
+ ret = get_errno(semctl(semid, semnum, cmd, NULL));
+ break;
+ }
+
+ return ret;
+}
+
+struct target_sembuf {
+ unsigned short sem_num;
+ short sem_op;
+ short sem_flg;
+};
+
+static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
+ abi_ulong target_addr,
+ unsigned nsops)
+{
+ struct target_sembuf *target_sembuf;
+ int i;
+
+ target_sembuf = lock_user(VERIFY_READ, target_addr,
+ nsops*sizeof(struct target_sembuf), 1);
+ if (!target_sembuf)
+ return -TARGET_EFAULT;
+
+ for(i=0; i<nsops; i++) {
+ __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
+ __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
+ __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
+ }
+
+ unlock_user(target_sembuf, target_addr, 0);
+
+ return 0;
+}
+
+#if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \
+ defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64)
+
+/*
+ * This macro is required to handle the s390 variants, which passes the
+ * arguments in a different order than default.
+ */
+#ifdef __s390x__
+#define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
+ (__nsops), (__timeout), (__sops)
+#else
+#define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
+ (__nsops), 0, (__sops), (__timeout)
+#endif
+
+static inline abi_long do_semtimedop(int semid,
+ abi_long ptr,
+ unsigned nsops,
+ abi_long timeout, bool time64)
+{
+ struct sembuf *sops;
+ struct timespec ts, *pts = NULL;
+ abi_long ret;
+
+ if (timeout) {
+ pts = &ts;
+ if (time64) {
+ if (target_to_host_timespec64(pts, timeout)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (target_to_host_timespec(pts, timeout)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+
+ if (nsops > TARGET_SEMOPM) {
+ return -TARGET_E2BIG;
+ }
+
+ sops = g_new(struct sembuf, nsops);
+
+ if (target_to_host_sembuf(sops, ptr, nsops)) {
+ g_free(sops);
+ return -TARGET_EFAULT;
+ }
+
+ ret = -TARGET_ENOSYS;
+#ifdef __NR_semtimedop
+ ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
+#endif
+#ifdef __NR_ipc
+ if (ret == -TARGET_ENOSYS) {
+ ret = get_errno(safe_ipc(IPCOP_semtimedop, semid,
+ SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts)));
+ }
+#endif
+ g_free(sops);
+ return ret;
+}
+#endif
+
+struct target_msqid_ds
+{
+ struct target_ipc_perm msg_perm;
+ abi_ulong msg_stime;
+#if TARGET_ABI_BITS == 32
+ abi_ulong __unused1;
+#endif
+ abi_ulong msg_rtime;
+#if TARGET_ABI_BITS == 32
+ abi_ulong __unused2;
+#endif
+ abi_ulong msg_ctime;
+#if TARGET_ABI_BITS == 32
+ abi_ulong __unused3;
+#endif
+ abi_ulong __msg_cbytes;
+ abi_ulong msg_qnum;
+ abi_ulong msg_qbytes;
+ abi_ulong msg_lspid;
+ abi_ulong msg_lrpid;
+ abi_ulong __unused4;
+ abi_ulong __unused5;
+};
+
+static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
+ abi_ulong target_addr)
+{
+ struct target_msqid_ds *target_md;
+
+ if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
+ return -TARGET_EFAULT;
+ if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
+ return -TARGET_EFAULT;
+ host_md->msg_stime = tswapal(target_md->msg_stime);
+ host_md->msg_rtime = tswapal(target_md->msg_rtime);
+ host_md->msg_ctime = tswapal(target_md->msg_ctime);
+ host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
+ host_md->msg_qnum = tswapal(target_md->msg_qnum);
+ host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
+ host_md->msg_lspid = tswapal(target_md->msg_lspid);
+ host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
+ unlock_user_struct(target_md, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
+ struct msqid_ds *host_md)
+{
+ struct target_msqid_ds *target_md;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
+ return -TARGET_EFAULT;
+ if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
+ return -TARGET_EFAULT;
+ target_md->msg_stime = tswapal(host_md->msg_stime);
+ target_md->msg_rtime = tswapal(host_md->msg_rtime);
+ target_md->msg_ctime = tswapal(host_md->msg_ctime);
+ target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
+ target_md->msg_qnum = tswapal(host_md->msg_qnum);
+ target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
+ target_md->msg_lspid = tswapal(host_md->msg_lspid);
+ target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
+ unlock_user_struct(target_md, target_addr, 1);
+ return 0;
+}
+
+struct target_msginfo {
+ int msgpool;
+ int msgmap;
+ int msgmax;
+ int msgmnb;
+ int msgmni;
+ int msgssz;
+ int msgtql;
+ unsigned short int msgseg;
+};
+
+static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
+ struct msginfo *host_msginfo)
+{
+ struct target_msginfo *target_msginfo;
+ if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
+ return -TARGET_EFAULT;
+ __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
+ __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
+ __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
+ __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
+ __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
+ __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
+ __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
+ __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
+ unlock_user_struct(target_msginfo, target_addr, 1);
+ return 0;
+}
+
+static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
+{
+ struct msqid_ds dsarg;
+ struct msginfo msginfo;
+ abi_long ret = -TARGET_EINVAL;
+
+ cmd &= 0xff;
+
+ switch (cmd) {
+ case IPC_STAT:
+ case IPC_SET:
+ case MSG_STAT:
+ if (target_to_host_msqid_ds(&dsarg,ptr))
+ return -TARGET_EFAULT;
+ ret = get_errno(msgctl(msgid, cmd, &dsarg));
+ if (host_to_target_msqid_ds(ptr,&dsarg))
+ return -TARGET_EFAULT;
+ break;
+ case IPC_RMID:
+ ret = get_errno(msgctl(msgid, cmd, NULL));
+ break;
+ case IPC_INFO:
+ case MSG_INFO:
+ ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
+ if (host_to_target_msginfo(ptr, &msginfo))
+ return -TARGET_EFAULT;
+ break;
+ }
+
+ return ret;
+}
+
+struct target_msgbuf {
+ abi_long mtype;
+ char mtext[1];
+};
+
+static inline abi_long do_msgsnd(int msqid, abi_long msgp,
+ ssize_t msgsz, int msgflg)
+{
+ struct target_msgbuf *target_mb;
+ struct msgbuf *host_mb;
+ abi_long ret = 0;
+
+ if (msgsz < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
+ return -TARGET_EFAULT;
+ host_mb = g_try_malloc(msgsz + sizeof(long));
+ if (!host_mb) {
+ unlock_user_struct(target_mb, msgp, 0);
+ return -TARGET_ENOMEM;
+ }
+ host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
+ memcpy(host_mb->mtext, target_mb->mtext, msgsz);
+ ret = -TARGET_ENOSYS;
+#ifdef __NR_msgsnd
+ ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
+#endif
+#ifdef __NR_ipc
+ if (ret == -TARGET_ENOSYS) {
+#ifdef __s390x__
+ ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
+ host_mb));
+#else
+ ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
+ host_mb, 0));
+#endif
+ }
+#endif
+ g_free(host_mb);
+ unlock_user_struct(target_mb, msgp, 0);
+
+ return ret;
+}
+
+#ifdef __NR_ipc
+#if defined(__sparc__)
+/* SPARC for msgrcv it does not use the kludge on final 2 arguments. */
+#define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp
+#elif defined(__s390x__)
+/* The s390 sys_ipc variant has only five parameters. */
+#define MSGRCV_ARGS(__msgp, __msgtyp) \
+ ((long int[]){(long int)__msgp, __msgtyp})
+#else
+#define MSGRCV_ARGS(__msgp, __msgtyp) \
+ ((long int[]){(long int)__msgp, __msgtyp}), 0
+#endif
+#endif
+
+static inline abi_long do_msgrcv(int msqid, abi_long msgp,
+ ssize_t msgsz, abi_long msgtyp,
+ int msgflg)
+{
+ struct target_msgbuf *target_mb;
+ char *target_mtext;
+ struct msgbuf *host_mb;
+ abi_long ret = 0;
+
+ if (msgsz < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
+ return -TARGET_EFAULT;
+
+ host_mb = g_try_malloc(msgsz + sizeof(long));
+ if (!host_mb) {
+ ret = -TARGET_ENOMEM;
+ goto end;
+ }
+ ret = -TARGET_ENOSYS;
+#ifdef __NR_msgrcv
+ ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
+#endif
+#ifdef __NR_ipc
+ if (ret == -TARGET_ENOSYS) {
+ ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
+ msgflg, MSGRCV_ARGS(host_mb, msgtyp)));
+ }
+#endif
+
+ if (ret > 0) {
+ abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
+ target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
+ if (!target_mtext) {
+ ret = -TARGET_EFAULT;
+ goto end;
+ }
+ memcpy(target_mb->mtext, host_mb->mtext, ret);
+ unlock_user(target_mtext, target_mtext_addr, ret);
+ }
+
+ target_mb->mtype = tswapal(host_mb->mtype);
+
+end:
+ if (target_mb)
+ unlock_user_struct(target_mb, msgp, 1);
+ g_free(host_mb);
+ return ret;
+}
+
+static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
+ abi_ulong target_addr)
+{
+ struct target_shmid_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
+ return -TARGET_EFAULT;
+ if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
+ return -TARGET_EFAULT;
+ __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
+ __get_user(host_sd->shm_atime, &target_sd->shm_atime);
+ __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
+ __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
+ __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
+ __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
+ __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
+ unlock_user_struct(target_sd, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
+ struct shmid_ds *host_sd)
+{
+ struct target_shmid_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
+ return -TARGET_EFAULT;
+ if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
+ return -TARGET_EFAULT;
+ __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
+ __put_user(host_sd->shm_atime, &target_sd->shm_atime);
+ __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
+ __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
+ __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
+ __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
+ __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
+ unlock_user_struct(target_sd, target_addr, 1);
+ return 0;
+}
+
+struct target_shminfo {
+ abi_ulong shmmax;
+ abi_ulong shmmin;
+ abi_ulong shmmni;
+ abi_ulong shmseg;
+ abi_ulong shmall;
+};
+
+static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
+ struct shminfo *host_shminfo)
+{
+ struct target_shminfo *target_shminfo;
+ if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
+ return -TARGET_EFAULT;
+ __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
+ __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
+ __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
+ __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
+ __put_user(host_shminfo->shmall, &target_shminfo->shmall);
+ unlock_user_struct(target_shminfo, target_addr, 1);
+ return 0;
+}
+
+struct target_shm_info {
+ int used_ids;
+ abi_ulong shm_tot;
+ abi_ulong shm_rss;
+ abi_ulong shm_swp;
+ abi_ulong swap_attempts;
+ abi_ulong swap_successes;
+};
+
+static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
+ struct shm_info *host_shm_info)
+{
+ struct target_shm_info *target_shm_info;
+ if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
+ return -TARGET_EFAULT;
+ __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
+ __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
+ __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
+ __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
+ __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
+ __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
+ unlock_user_struct(target_shm_info, target_addr, 1);
+ return 0;
+}
+
+static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
+{
+ struct shmid_ds dsarg;
+ struct shminfo shminfo;
+ struct shm_info shm_info;
+ abi_long ret = -TARGET_EINVAL;
+
+ cmd &= 0xff;
+
+ switch(cmd) {
+ case IPC_STAT:
+ case IPC_SET:
+ case SHM_STAT:
+ if (target_to_host_shmid_ds(&dsarg, buf))
+ return -TARGET_EFAULT;
+ ret = get_errno(shmctl(shmid, cmd, &dsarg));
+ if (host_to_target_shmid_ds(buf, &dsarg))
+ return -TARGET_EFAULT;
+ break;
+ case IPC_INFO:
+ ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
+ if (host_to_target_shminfo(buf, &shminfo))
+ return -TARGET_EFAULT;
+ break;
+ case SHM_INFO:
+ ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
+ if (host_to_target_shm_info(buf, &shm_info))
+ return -TARGET_EFAULT;
+ break;
+ case IPC_RMID:
+ case SHM_LOCK:
+ case SHM_UNLOCK:
+ ret = get_errno(shmctl(shmid, cmd, NULL));
+ break;
+ }
+
+ return ret;
+}
+
+#ifndef TARGET_FORCE_SHMLBA
+/* For most architectures, SHMLBA is the same as the page size;
+ * some architectures have larger values, in which case they should
+ * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
+ * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
+ * and defining its own value for SHMLBA.
+ *
+ * The kernel also permits SHMLBA to be set by the architecture to a
+ * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
+ * this means that addresses are rounded to the large size if
+ * SHM_RND is set but addresses not aligned to that size are not rejected
+ * as long as they are at least page-aligned. Since the only architecture
+ * which uses this is ia64 this code doesn't provide for that oddity.
+ */
+static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
+{
+ return TARGET_PAGE_SIZE;
+}
+#endif
+
+static inline abi_ulong do_shmat(CPUArchState *cpu_env,
+ int shmid, abi_ulong shmaddr, int shmflg)
+{
+ abi_long raddr;
+ void *host_raddr;
+ struct shmid_ds shm_info;
+ int i,ret;
+ abi_ulong shmlba;
+
+ /* shmat pointers are always untagged */
+
+ /* find out the length of the shared memory segment */
+ ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
+ if (is_error(ret)) {
+ /* can't get length, bail out */
+ return ret;
+ }
+
+ shmlba = target_shmlba(cpu_env);
+
+ if (shmaddr & (shmlba - 1)) {
+ if (shmflg & SHM_RND) {
+ shmaddr &= ~(shmlba - 1);
+ } else {
+ return -TARGET_EINVAL;
+ }
+ }
+ if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) {
+ return -TARGET_EINVAL;
+ }
+
+ mmap_lock();
+
+ if (shmaddr)
+ host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg);
+ else {
+ abi_ulong mmap_start;
+
+ /* In order to use the host shmat, we need to honor host SHMLBA. */
+ mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
+
+ if (mmap_start == -1) {
+ errno = ENOMEM;
+ host_raddr = (void *)-1;
+ } else
+ host_raddr = shmat(shmid, g2h_untagged(mmap_start),
+ shmflg | SHM_REMAP);
+ }
+
+ if (host_raddr == (void *)-1) {
+ mmap_unlock();
+ return get_errno((long)host_raddr);
+ }
+ raddr=h2g((unsigned long)host_raddr);
+
+ page_set_flags(raddr, raddr + shm_info.shm_segsz,
+ PAGE_VALID | PAGE_RESET | PAGE_READ |
+ (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
+
+ for (i = 0; i < N_SHM_REGIONS; i++) {
+ if (!shm_regions[i].in_use) {
+ shm_regions[i].in_use = true;
+ shm_regions[i].start = raddr;
+ shm_regions[i].size = shm_info.shm_segsz;
+ break;
+ }
+ }
+
+ mmap_unlock();
+ return raddr;
+
+}
+
+static inline abi_long do_shmdt(abi_ulong shmaddr)
+{
+ int i;
+ abi_long rv;
+
+ /* shmdt pointers are always untagged */
+
+ mmap_lock();
+
+ for (i = 0; i < N_SHM_REGIONS; ++i) {
+ if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
+ shm_regions[i].in_use = false;
+ page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
+ break;
+ }
+ }
+ rv = get_errno(shmdt(g2h_untagged(shmaddr)));
+
+ mmap_unlock();
+
+ return rv;
+}
+
+#ifdef TARGET_NR_ipc
+/* ??? This only works with linear mappings. */
+/* do_ipc() must return target values and target errnos. */
+static abi_long do_ipc(CPUArchState *cpu_env,
+ unsigned int call, abi_long first,
+ abi_long second, abi_long third,
+ abi_long ptr, abi_long fifth)
+{
+ int version;
+ abi_long ret = 0;
+
+ version = call >> 16;
+ call &= 0xffff;
+
+ switch (call) {
+ case IPCOP_semop:
+ ret = do_semtimedop(first, ptr, second, 0, false);
+ break;
+ case IPCOP_semtimedop:
+ /*
+ * The s390 sys_ipc variant has only five parameters instead of six
+ * (as for default variant) and the only difference is the handling of
+ * SEMTIMEDOP where on s390 the third parameter is used as a pointer
+ * to a struct timespec where the generic variant uses fifth parameter.
+ */
+#if defined(TARGET_S390X)
+ ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64);
+#else
+ ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64);
+#endif
+ break;
+
+ case IPCOP_semget:
+ ret = get_errno(semget(first, second, third));
+ break;
+
+ case IPCOP_semctl: {
+ /* The semun argument to semctl is passed by value, so dereference the
+ * ptr argument. */
+ abi_ulong atptr;
+ get_user_ual(atptr, ptr);
+ ret = do_semctl(first, second, third, atptr);
+ break;
+ }
+
+ case IPCOP_msgget:
+ ret = get_errno(msgget(first, second));
+ break;
+
+ case IPCOP_msgsnd:
+ ret = do_msgsnd(first, ptr, second, third);
+ break;
+
+ case IPCOP_msgctl:
+ ret = do_msgctl(first, second, ptr);
+ break;
+
+ case IPCOP_msgrcv:
+ switch (version) {
+ case 0:
+ {
+ struct target_ipc_kludge {
+ abi_long msgp;
+ abi_long msgtyp;
+ } *tmp;
+
+ if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
+ ret = -TARGET_EFAULT;
+ break;
+ }
+
+ ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
+
+ unlock_user_struct(tmp, ptr, 0);
+ break;
+ }
+ default:
+ ret = do_msgrcv(first, ptr, second, fifth, third);
+ }
+ break;
+
+ case IPCOP_shmat:
+ switch (version) {
+ default:
+ {
+ abi_ulong raddr;
+ raddr = do_shmat(cpu_env, first, ptr, second);
+ if (is_error(raddr))
+ return get_errno(raddr);
+ if (put_user_ual(raddr, third))
+ return -TARGET_EFAULT;
+ break;
+ }
+ case 1:
+ ret = -TARGET_EINVAL;
+ break;
+ }
+ break;
+ case IPCOP_shmdt:
+ ret = do_shmdt(ptr);
+ break;
+
+ case IPCOP_shmget:
+ /* IPC_* flag values are the same on all linux platforms */
+ ret = get_errno(shmget(first, second, third));
+ break;
+
+ /* IPC_* and SHM_* command values are the same on all linux platforms */
+ case IPCOP_shmctl:
+ ret = do_shmctl(first, second, ptr);
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
+ call, version);
+ ret = -TARGET_ENOSYS;
+ break;
+ }
+ return ret;
+}
+#endif
+
+/* kernel structure types definitions */
+
+#define STRUCT(name, ...) STRUCT_ ## name,
+#define STRUCT_SPECIAL(name) STRUCT_ ## name,
+enum {
+#include "syscall_types.h"
+STRUCT_MAX
+};
+#undef STRUCT
+#undef STRUCT_SPECIAL
+
+#define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
+#define STRUCT_SPECIAL(name)
+#include "syscall_types.h"
+#undef STRUCT
+#undef STRUCT_SPECIAL
+
+#define MAX_STRUCT_SIZE 4096
+
+#ifdef CONFIG_FIEMAP
+/* So fiemap access checks don't overflow on 32 bit systems.
+ * This is very slightly smaller than the limit imposed by
+ * the underlying kernel.
+ */
+#define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
+ / sizeof(struct fiemap_extent))
+
+static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ /* The parameter for this ioctl is a struct fiemap followed
+ * by an array of struct fiemap_extent whose size is set
+ * in fiemap->fm_extent_count. The array is filled in by the
+ * ioctl.
+ */
+ int target_size_in, target_size_out;
+ struct fiemap *fm;
+ const argtype *arg_type = ie->arg_type;
+ const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
+ void *argptr, *p;
+ abi_long ret;
+ int i, extent_size = thunk_type_size(extent_arg_type, 0);
+ uint32_t outbufsz;
+ int free_fm = 0;
+
+ assert(arg_type[0] == TYPE_PTR);
+ assert(ie->access == IOC_RW);
+ arg_type++;
+ target_size_in = thunk_type_size(arg_type, 0);
+ argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
+ if (!argptr) {
+ return -TARGET_EFAULT;
+ }
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+ fm = (struct fiemap *)buf_temp;
+ if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
+ return -TARGET_EINVAL;
+ }
+
+ outbufsz = sizeof (*fm) +
+ (sizeof(struct fiemap_extent) * fm->fm_extent_count);
+
+ if (outbufsz > MAX_STRUCT_SIZE) {
+ /* We can't fit all the extents into the fixed size buffer.
+ * Allocate one that is large enough and use it instead.
+ */
+ fm = g_try_malloc(outbufsz);
+ if (!fm) {
+ return -TARGET_ENOMEM;
+ }
+ memcpy(fm, buf_temp, sizeof(struct fiemap));
+ free_fm = 1;
+ }
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
+ if (!is_error(ret)) {
+ target_size_out = target_size_in;
+ /* An extent_count of 0 means we were only counting the extents
+ * so there are no structs to copy
+ */
+ if (fm->fm_extent_count != 0) {
+ target_size_out += fm->fm_mapped_extents * extent_size;
+ }
+ argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ } else {
+ /* Convert the struct fiemap */
+ thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
+ if (fm->fm_extent_count != 0) {
+ p = argptr + target_size_in;
+ /* ...and then all the struct fiemap_extents */
+ for (i = 0; i < fm->fm_mapped_extents; i++) {
+ thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
+ THUNK_TARGET);
+ p += extent_size;
+ }
+ }
+ unlock_user(argptr, arg, target_size_out);
+ }
+ }
+ if (free_fm) {
+ g_free(fm);
+ }
+ return ret;
+}
+#endif
+
+static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ const argtype *arg_type = ie->arg_type;
+ int target_size;
+ void *argptr;
+ int ret;
+ struct ifconf *host_ifconf;
+ uint32_t outbufsz;
+ const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
+ const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) };
+ int target_ifreq_size;
+ int nb_ifreq;
+ int free_buf = 0;
+ int i;
+ int target_ifc_len;
+ abi_long target_ifc_buf;
+ int host_ifc_len;
+ char *host_ifc_buf;
+
+ assert(arg_type[0] == TYPE_PTR);
+ assert(ie->access == IOC_RW);
+
+ arg_type++;
+ target_size = thunk_type_size(arg_type, 0);
+
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+
+ host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
+ target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
+ target_ifreq_size = thunk_type_size(ifreq_max_type, 0);
+
+ if (target_ifc_buf != 0) {
+ target_ifc_len = host_ifconf->ifc_len;
+ nb_ifreq = target_ifc_len / target_ifreq_size;
+ host_ifc_len = nb_ifreq * sizeof(struct ifreq);
+
+ outbufsz = sizeof(*host_ifconf) + host_ifc_len;
+ if (outbufsz > MAX_STRUCT_SIZE) {
+ /*
+ * We can't fit all the extents into the fixed size buffer.
+ * Allocate one that is large enough and use it instead.
+ */
+ host_ifconf = malloc(outbufsz);
+ if (!host_ifconf) {
+ return -TARGET_ENOMEM;
+ }
+ memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
+ free_buf = 1;
+ }
+ host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
+
+ host_ifconf->ifc_len = host_ifc_len;
+ } else {
+ host_ifc_buf = NULL;
+ }
+ host_ifconf->ifc_buf = host_ifc_buf;
+
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
+ if (!is_error(ret)) {
+ /* convert host ifc_len to target ifc_len */
+
+ nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
+ target_ifc_len = nb_ifreq * target_ifreq_size;
+ host_ifconf->ifc_len = target_ifc_len;
+
+ /* restore target ifc_buf */
+
+ host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
+
+ /* copy struct ifconf to target user */
+
+ argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
+ unlock_user(argptr, arg, target_size);
+
+ if (target_ifc_buf != 0) {
+ /* copy ifreq[] to target user */
+ argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
+ for (i = 0; i < nb_ifreq ; i++) {
+ thunk_convert(argptr + i * target_ifreq_size,
+ host_ifc_buf + i * sizeof(struct ifreq),
+ ifreq_arg_type, THUNK_TARGET);
+ }
+ unlock_user(argptr, target_ifc_buf, target_ifc_len);
+ }
+ }
+
+ if (free_buf) {
+ free(host_ifconf);
+ }
+
+ return ret;
+}
+
+#if defined(CONFIG_USBFS)
+#if HOST_LONG_BITS > 64
+#error USBDEVFS thunks do not support >64 bit hosts yet.
+#endif
+struct live_urb {
+ uint64_t target_urb_adr;
+ uint64_t target_buf_adr;
+ char *target_buf_ptr;
+ struct usbdevfs_urb host_urb;
+};
+
+static GHashTable *usbdevfs_urb_hashtable(void)
+{
+ static GHashTable *urb_hashtable;
+
+ if (!urb_hashtable) {
+ urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
+ }
+ return urb_hashtable;
+}
+
+static void urb_hashtable_insert(struct live_urb *urb)
+{
+ GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
+ g_hash_table_insert(urb_hashtable, urb, urb);
+}
+
+static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
+{
+ GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
+ return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
+}
+
+static void urb_hashtable_remove(struct live_urb *urb)
+{
+ GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
+ g_hash_table_remove(urb_hashtable, urb);
+}
+
+static abi_long
+do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
+ const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
+ struct live_urb *lurb;
+ void *argptr;
+ uint64_t hurb;
+ int target_size;
+ uintptr_t target_urb_adr;
+ abi_long ret;
+
+ target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
+
+ memset(buf_temp, 0, sizeof(uint64_t));
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+ if (is_error(ret)) {
+ return ret;
+ }
+
+ memcpy(&hurb, buf_temp, sizeof(uint64_t));
+ lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
+ if (!lurb->target_urb_adr) {
+ return -TARGET_EFAULT;
+ }
+ urb_hashtable_remove(lurb);
+ unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
+ lurb->host_urb.buffer_length);
+ lurb->target_buf_ptr = NULL;
+
+ /* restore the guest buffer pointer */
+ lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
+
+ /* update the guest urb struct */
+ argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
+ if (!argptr) {
+ g_free(lurb);
+ return -TARGET_EFAULT;
+ }
+ thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
+ unlock_user(argptr, lurb->target_urb_adr, target_size);
+
+ target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
+ /* write back the urb handle */
+ argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
+ if (!argptr) {
+ g_free(lurb);
+ return -TARGET_EFAULT;
+ }
+
+ /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
+ target_urb_adr = lurb->target_urb_adr;
+ thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
+ unlock_user(argptr, arg, target_size);
+
+ g_free(lurb);
+ return ret;
+}
+
+static abi_long
+do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
+ uint8_t *buf_temp __attribute__((unused)),
+ int fd, int cmd, abi_long arg)
+{
+ struct live_urb *lurb;
+
+ /* map target address back to host URB with metadata. */
+ lurb = urb_hashtable_lookup(arg);
+ if (!lurb) {
+ return -TARGET_EFAULT;
+ }
+ return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
+}
+
+static abi_long
+do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ const argtype *arg_type = ie->arg_type;
+ int target_size;
+ abi_long ret;
+ void *argptr;
+ int rw_dir;
+ struct live_urb *lurb;
+
+ /*
+ * each submitted URB needs to map to a unique ID for the
+ * kernel, and that unique ID needs to be a pointer to
+ * host memory. hence, we need to malloc for each URB.
+ * isochronous transfers have a variable length struct.
+ */
+ arg_type++;
+ target_size = thunk_type_size(arg_type, THUNK_TARGET);
+
+ /* construct host copy of urb and metadata */
+ lurb = g_try_malloc0(sizeof(struct live_urb));
+ if (!lurb) {
+ return -TARGET_ENOMEM;
+ }
+
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr) {
+ g_free(lurb);
+ return -TARGET_EFAULT;
+ }
+ thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+
+ lurb->target_urb_adr = arg;
+ lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
+
+ /* buffer space used depends on endpoint type so lock the entire buffer */
+ /* control type urbs should check the buffer contents for true direction */
+ rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
+ lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
+ lurb->host_urb.buffer_length, 1);
+ if (lurb->target_buf_ptr == NULL) {
+ g_free(lurb);
+ return -TARGET_EFAULT;
+ }
+
+ /* update buffer pointer in host copy */
+ lurb->host_urb.buffer = lurb->target_buf_ptr;
+
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
+ if (is_error(ret)) {
+ unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
+ g_free(lurb);
+ } else {
+ urb_hashtable_insert(lurb);
+ }
+
+ return ret;
+}
+#endif /* CONFIG_USBFS */
+
+static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
+ int cmd, abi_long arg)
+{
+ void *argptr;
+ struct dm_ioctl *host_dm;
+ abi_long guest_data;
+ uint32_t guest_data_size;
+ int target_size;
+ const argtype *arg_type = ie->arg_type;
+ abi_long ret;
+ void *big_buf = NULL;
+ char *host_data;
+
+ arg_type++;
+ target_size = thunk_type_size(arg_type, 0);
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ goto out;
+ }
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+
+ /* buf_temp is too small, so fetch things into a bigger buffer */
+ big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
+ memcpy(big_buf, buf_temp, target_size);
+ buf_temp = big_buf;
+ host_dm = big_buf;
+
+ guest_data = arg + host_dm->data_start;
+ if ((guest_data - arg) < 0) {
+ ret = -TARGET_EINVAL;
+ goto out;
+ }
+ guest_data_size = host_dm->data_size - host_dm->data_start;
+ host_data = (char*)host_dm + host_dm->data_start;
+
+ argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ goto out;
+ }
+
+ switch (ie->host_cmd) {
+ case DM_REMOVE_ALL:
+ case DM_LIST_DEVICES:
+ case DM_DEV_CREATE:
+ case DM_DEV_REMOVE:
+ case DM_DEV_SUSPEND:
+ case DM_DEV_STATUS:
+ case DM_DEV_WAIT:
+ case DM_TABLE_STATUS:
+ case DM_TABLE_CLEAR:
+ case DM_TABLE_DEPS:
+ case DM_LIST_VERSIONS:
+ /* no input data */
+ break;
+ case DM_DEV_RENAME:
+ case DM_DEV_SET_GEOMETRY:
+ /* data contains only strings */
+ memcpy(host_data, argptr, guest_data_size);
+ break;
+ case DM_TARGET_MSG:
+ memcpy(host_data, argptr, guest_data_size);
+ *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
+ break;
+ case DM_TABLE_LOAD:
+ {
+ void *gspec = argptr;
+ void *cur_data = host_data;
+ const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
+ int spec_size = thunk_type_size(arg_type, 0);
+ int i;
+
+ for (i = 0; i < host_dm->target_count; i++) {
+ struct dm_target_spec *spec = cur_data;
+ uint32_t next;
+ int slen;
+
+ thunk_convert(spec, gspec, arg_type, THUNK_HOST);
+ slen = strlen((char*)gspec + spec_size) + 1;
+ next = spec->next;
+ spec->next = sizeof(*spec) + slen;
+ strcpy((char*)&spec[1], gspec + spec_size);
+ gspec += next;
+ cur_data += spec->next;
+ }
+ break;
+ }
+ default:
+ ret = -TARGET_EINVAL;
+ unlock_user(argptr, guest_data, 0);
+ goto out;
+ }
+ unlock_user(argptr, guest_data, 0);
+
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+ if (!is_error(ret)) {
+ guest_data = arg + host_dm->data_start;
+ guest_data_size = host_dm->data_size - host_dm->data_start;
+ argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
+ switch (ie->host_cmd) {
+ case DM_REMOVE_ALL:
+ case DM_DEV_CREATE:
+ case DM_DEV_REMOVE:
+ case DM_DEV_RENAME:
+ case DM_DEV_SUSPEND:
+ case DM_DEV_STATUS:
+ case DM_TABLE_LOAD:
+ case DM_TABLE_CLEAR:
+ case DM_TARGET_MSG:
+ case DM_DEV_SET_GEOMETRY:
+ /* no return data */
+ break;
+ case DM_LIST_DEVICES:
+ {
+ struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
+ uint32_t remaining_data = guest_data_size;
+ void *cur_data = argptr;
+ const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
+ int nl_size = 12; /* can't use thunk_size due to alignment */
+
+ while (1) {
+ uint32_t next = nl->next;
+ if (next) {
+ nl->next = nl_size + (strlen(nl->name) + 1);
+ }
+ if (remaining_data < nl->next) {
+ host_dm->flags |= DM_BUFFER_FULL_FLAG;
+ break;
+ }
+ thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
+ strcpy(cur_data + nl_size, nl->name);
+ cur_data += nl->next;
+ remaining_data -= nl->next;
+ if (!next) {
+ break;
+ }
+ nl = (void*)nl + next;
+ }
+ break;
+ }
+ case DM_DEV_WAIT:
+ case DM_TABLE_STATUS:
+ {
+ struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
+ void *cur_data = argptr;
+ const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
+ int spec_size = thunk_type_size(arg_type, 0);
+ int i;
+
+ for (i = 0; i < host_dm->target_count; i++) {
+ uint32_t next = spec->next;
+ int slen = strlen((char*)&spec[1]) + 1;
+ spec->next = (cur_data - argptr) + spec_size + slen;
+ if (guest_data_size < spec->next) {
+ host_dm->flags |= DM_BUFFER_FULL_FLAG;
+ break;
+ }
+ thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
+ strcpy(cur_data + spec_size, (char*)&spec[1]);
+ cur_data = argptr + spec->next;
+ spec = (void*)host_dm + host_dm->data_start + next;
+ }
+ break;
+ }
+ case DM_TABLE_DEPS:
+ {
+ void *hdata = (void*)host_dm + host_dm->data_start;
+ int count = *(uint32_t*)hdata;
+ uint64_t *hdev = hdata + 8;
+ uint64_t *gdev = argptr + 8;
+ int i;
+
+ *(uint32_t*)argptr = tswap32(count);
+ for (i = 0; i < count; i++) {
+ *gdev = tswap64(*hdev);
+ gdev++;
+ hdev++;
+ }
+ break;
+ }
+ case DM_LIST_VERSIONS:
+ {
+ struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
+ uint32_t remaining_data = guest_data_size;
+ void *cur_data = argptr;
+ const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
+ int vers_size = thunk_type_size(arg_type, 0);
+
+ while (1) {
+ uint32_t next = vers->next;
+ if (next) {
+ vers->next = vers_size + (strlen(vers->name) + 1);
+ }
+ if (remaining_data < vers->next) {
+ host_dm->flags |= DM_BUFFER_FULL_FLAG;
+ break;
+ }
+ thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
+ strcpy(cur_data + vers_size, vers->name);
+ cur_data += vers->next;
+ remaining_data -= vers->next;
+ if (!next) {
+ break;
+ }
+ vers = (void*)vers + next;
+ }
+ break;
+ }
+ default:
+ unlock_user(argptr, guest_data, 0);
+ ret = -TARGET_EINVAL;
+ goto out;
+ }
+ unlock_user(argptr, guest_data, guest_data_size);
+
+ argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ goto out;
+ }
+ thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
+ unlock_user(argptr, arg, target_size);
+ }
+out:
+ g_free(big_buf);
+ return ret;
+}
+
+static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
+ int cmd, abi_long arg)
+{
+ void *argptr;
+ int target_size;
+ const argtype *arg_type = ie->arg_type;
+ const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
+ abi_long ret;
+
+ struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
+ struct blkpg_partition host_part;
+
+ /* Read and convert blkpg */
+ arg_type++;
+ target_size = thunk_type_size(arg_type, 0);
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ goto out;
+ }
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+
+ switch (host_blkpg->op) {
+ case BLKPG_ADD_PARTITION:
+ case BLKPG_DEL_PARTITION:
+ /* payload is struct blkpg_partition */
+ break;
+ default:
+ /* Unknown opcode */
+ ret = -TARGET_EINVAL;
+ goto out;
+ }
+
+ /* Read and convert blkpg->data */
+ arg = (abi_long)(uintptr_t)host_blkpg->data;
+ target_size = thunk_type_size(part_arg_type, 0);
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr) {
+ ret = -TARGET_EFAULT;
+ goto out;
+ }
+ thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+
+ /* Swizzle the data pointer to our local copy and call! */
+ host_blkpg->data = &host_part;
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
+
+out:
+ return ret;
+}
+
+static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ const argtype *arg_type = ie->arg_type;
+ const StructEntry *se;
+ const argtype *field_types;
+ const int *dst_offsets, *src_offsets;
+ int target_size;
+ void *argptr;
+ abi_ulong *target_rt_dev_ptr = NULL;
+ unsigned long *host_rt_dev_ptr = NULL;
+ abi_long ret;
+ int i;
+
+ assert(ie->access == IOC_W);
+ assert(*arg_type == TYPE_PTR);
+ arg_type++;
+ assert(*arg_type == TYPE_STRUCT);
+ target_size = thunk_type_size(arg_type, 0);
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr) {
+ return -TARGET_EFAULT;
+ }
+ arg_type++;
+ assert(*arg_type == (int)STRUCT_rtentry);
+ se = struct_entries + *arg_type++;
+ assert(se->convert[0] == NULL);
+ /* convert struct here to be able to catch rt_dev string */
+ field_types = se->field_types;
+ dst_offsets = se->field_offsets[THUNK_HOST];
+ src_offsets = se->field_offsets[THUNK_TARGET];
+ for (i = 0; i < se->nb_fields; i++) {
+ if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
+ assert(*field_types == TYPE_PTRVOID);
+ target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
+ host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
+ if (*target_rt_dev_ptr != 0) {
+ *host_rt_dev_ptr = (unsigned long)lock_user_string(
+ tswapal(*target_rt_dev_ptr));
+ if (!*host_rt_dev_ptr) {
+ unlock_user(argptr, arg, 0);
+ return -TARGET_EFAULT;
+ }
+ } else {
+ *host_rt_dev_ptr = 0;
+ }
+ field_types++;
+ continue;
+ }
+ field_types = thunk_convert(buf_temp + dst_offsets[i],
+ argptr + src_offsets[i],
+ field_types, THUNK_HOST);
+ }
+ unlock_user(argptr, arg, 0);
+
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+
+ assert(host_rt_dev_ptr != NULL);
+ assert(target_rt_dev_ptr != NULL);
+ if (*host_rt_dev_ptr != 0) {
+ unlock_user((void *)*host_rt_dev_ptr,
+ *target_rt_dev_ptr, 0);
+ }
+ return ret;
+}
+
+static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ int sig = target_to_host_signal(arg);
+ return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
+}
+
+static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ struct timeval tv;
+ abi_long ret;
+
+ ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
+ if (is_error(ret)) {
+ return ret;
+ }
+
+ if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
+ if (copy_to_user_timeval(arg, &tv)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ if (copy_to_user_timeval64(arg, &tv)) {
+ return -TARGET_EFAULT;
+ }
+ }
+
+ return ret;
+}
+
+static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ struct timespec ts;
+ abi_long ret;
+
+ ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
+ if (is_error(ret)) {
+ return ret;
+ }
+
+ if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
+ if (host_to_target_timespec(arg, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else{
+ if (host_to_target_timespec64(arg, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ }
+
+ return ret;
+}
+
+#ifdef TIOCGPTPEER
+static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
+ return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
+}
+#endif
+
+#ifdef HAVE_DRM_H
+
+static void unlock_drm_version(struct drm_version *host_ver,
+ struct target_drm_version *target_ver,
+ bool copy)
+{
+ unlock_user(host_ver->name, target_ver->name,
+ copy ? host_ver->name_len : 0);
+ unlock_user(host_ver->date, target_ver->date,
+ copy ? host_ver->date_len : 0);
+ unlock_user(host_ver->desc, target_ver->desc,
+ copy ? host_ver->desc_len : 0);
+}
+
+static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
+ struct target_drm_version *target_ver)
+{
+ memset(host_ver, 0, sizeof(*host_ver));
+
+ __get_user(host_ver->name_len, &target_ver->name_len);
+ if (host_ver->name_len) {
+ host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
+ target_ver->name_len, 0);
+ if (!host_ver->name) {
+ return -EFAULT;
+ }
+ }
+
+ __get_user(host_ver->date_len, &target_ver->date_len);
+ if (host_ver->date_len) {
+ host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
+ target_ver->date_len, 0);
+ if (!host_ver->date) {
+ goto err;
+ }
+ }
+
+ __get_user(host_ver->desc_len, &target_ver->desc_len);
+ if (host_ver->desc_len) {
+ host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
+ target_ver->desc_len, 0);
+ if (!host_ver->desc) {
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ unlock_drm_version(host_ver, target_ver, false);
+ return -EFAULT;
+}
+
+static inline void host_to_target_drmversion(
+ struct target_drm_version *target_ver,
+ struct drm_version *host_ver)
+{
+ __put_user(host_ver->version_major, &target_ver->version_major);
+ __put_user(host_ver->version_minor, &target_ver->version_minor);
+ __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
+ __put_user(host_ver->name_len, &target_ver->name_len);
+ __put_user(host_ver->date_len, &target_ver->date_len);
+ __put_user(host_ver->desc_len, &target_ver->desc_len);
+ unlock_drm_version(host_ver, target_ver, true);
+}
+
+static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ struct drm_version *ver;
+ struct target_drm_version *target_ver;
+ abi_long ret;
+
+ switch (ie->host_cmd) {
+ case DRM_IOCTL_VERSION:
+ if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
+ return -TARGET_EFAULT;
+ }
+ ver = (struct drm_version *)buf_temp;
+ ret = target_to_host_drmversion(ver, target_ver);
+ if (!is_error(ret)) {
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
+ if (is_error(ret)) {
+ unlock_drm_version(ver, target_ver, false);
+ } else {
+ host_to_target_drmversion(target_ver, ver);
+ }
+ }
+ unlock_user_struct(target_ver, arg, 0);
+ return ret;
+ }
+ return -TARGET_ENOSYS;
+}
+
+static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie,
+ struct drm_i915_getparam *gparam,
+ int fd, abi_long arg)
+{
+ abi_long ret;
+ int value;
+ struct target_drm_i915_getparam *target_gparam;
+
+ if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(gparam->param, &target_gparam->param);
+ gparam->value = &value;
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam));
+ put_user_s32(value, target_gparam->value);
+
+ unlock_user_struct(target_gparam, arg, 0);
+ return ret;
+}
+
+static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ switch (ie->host_cmd) {
+ case DRM_IOCTL_I915_GETPARAM:
+ return do_ioctl_drm_i915_getparam(ie,
+ (struct drm_i915_getparam *)buf_temp,
+ fd, arg);
+ default:
+ return -TARGET_ENOSYS;
+ }
+}
+
+#endif
+
+static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ struct tun_filter *filter = (struct tun_filter *)buf_temp;
+ struct tun_filter *target_filter;
+ char *target_addr;
+
+ assert(ie->access == IOC_W);
+
+ target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1);
+ if (!target_filter) {
+ return -TARGET_EFAULT;
+ }
+ filter->flags = tswap16(target_filter->flags);
+ filter->count = tswap16(target_filter->count);
+ unlock_user(target_filter, arg, 0);
+
+ if (filter->count) {
+ if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN >
+ MAX_STRUCT_SIZE) {
+ return -TARGET_EFAULT;
+ }
+
+ target_addr = lock_user(VERIFY_READ,
+ arg + offsetof(struct tun_filter, addr),
+ filter->count * ETH_ALEN, 1);
+ if (!target_addr) {
+ return -TARGET_EFAULT;
+ }
+ memcpy(filter->addr, target_addr, filter->count * ETH_ALEN);
+ unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0);
+ }
+
+ return get_errno(safe_ioctl(fd, ie->host_cmd, filter));
+}
+
+IOCTLEntry ioctl_entries[] = {
+#define IOCTL(cmd, access, ...) \
+ { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
+#define IOCTL_SPECIAL(cmd, access, dofn, ...) \
+ { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
+#define IOCTL_IGNORE(cmd) \
+ { TARGET_ ## cmd, 0, #cmd },
+#include "ioctls.h"
+ { 0, 0, },
+};
+
+/* ??? Implement proper locking for ioctls. */
+/* do_ioctl() Must return target values and target errnos. */
+static abi_long do_ioctl(int fd, int cmd, abi_long arg)
+{
+ const IOCTLEntry *ie;
+ const argtype *arg_type;
+ abi_long ret;
+ uint8_t buf_temp[MAX_STRUCT_SIZE];
+ int target_size;
+ void *argptr;
+
+ ie = ioctl_entries;
+ for(;;) {
+ if (ie->target_cmd == 0) {
+ qemu_log_mask(
+ LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
+ return -TARGET_ENOSYS;
+ }
+ if (ie->target_cmd == cmd)
+ break;
+ ie++;
+ }
+ arg_type = ie->arg_type;
+ if (ie->do_ioctl) {
+ return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
+ } else if (!ie->host_cmd) {
+ /* Some architectures define BSD ioctls in their headers
+ that are not implemented in Linux. */
+ return -TARGET_ENOSYS;
+ }
+
+ switch(arg_type[0]) {
+ case TYPE_NULL:
+ /* no argument */
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd));
+ break;
+ case TYPE_PTRVOID:
+ case TYPE_INT:
+ case TYPE_LONG:
+ case TYPE_ULONG:
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
+ break;
+ case TYPE_PTR:
+ arg_type++;
+ target_size = thunk_type_size(arg_type, 0);
+ switch(ie->access) {
+ case IOC_R:
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+ if (!is_error(ret)) {
+ argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
+ unlock_user(argptr, arg, target_size);
+ }
+ break;
+ case IOC_W:
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+ break;
+ default:
+ case IOC_RW:
+ argptr = lock_user(VERIFY_READ, arg, target_size, 1);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
+ unlock_user(argptr, arg, 0);
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
+ if (!is_error(ret)) {
+ argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
+ if (!argptr)
+ return -TARGET_EFAULT;
+ thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
+ unlock_user(argptr, arg, target_size);
+ }
+ break;
+ }
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP,
+ "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
+ (long)cmd, arg_type[0]);
+ ret = -TARGET_ENOSYS;
+ break;
+ }
+ return ret;
+}
+
+static const bitmask_transtbl iflag_tbl[] = {
+ { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
+ { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
+ { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
+ { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
+ { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
+ { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
+ { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
+ { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
+ { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
+ { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
+ { TARGET_IXON, TARGET_IXON, IXON, IXON },
+ { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
+ { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
+ { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
+ { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
+ { 0, 0, 0, 0 }
+};
+
+static const bitmask_transtbl oflag_tbl[] = {
+ { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
+ { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
+ { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
+ { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
+ { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
+ { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
+ { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
+ { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
+ { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
+ { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
+ { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
+ { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
+ { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
+ { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
+ { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
+ { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
+ { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
+ { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
+ { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
+ { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
+ { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
+ { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
+ { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
+ { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
+ { 0, 0, 0, 0 }
+};
+
+static const bitmask_transtbl cflag_tbl[] = {
+ { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
+ { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
+ { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
+ { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
+ { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
+ { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
+ { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
+ { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
+ { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
+ { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
+ { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
+ { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
+ { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
+ { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
+ { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
+ { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
+ { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
+ { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
+ { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
+ { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
+ { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
+ { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
+ { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
+ { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
+ { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
+ { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
+ { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
+ { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
+ { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
+ { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
+ { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
+ { 0, 0, 0, 0 }
+};
+
+static const bitmask_transtbl lflag_tbl[] = {
+ { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
+ { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
+ { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
+ { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
+ { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
+ { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
+ { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
+ { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
+ { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
+ { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
+ { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
+ { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
+ { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
+ { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
+ { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
+ { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
+ { 0, 0, 0, 0 }
+};
+
+static void target_to_host_termios (void *dst, const void *src)
+{
+ struct host_termios *host = dst;
+ const struct target_termios *target = src;
+
+ host->c_iflag =
+ target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
+ host->c_oflag =
+ target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
+ host->c_cflag =
+ target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
+ host->c_lflag =
+ target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
+ host->c_line = target->c_line;
+
+ memset(host->c_cc, 0, sizeof(host->c_cc));
+ host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
+ host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
+ host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
+ host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
+ host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
+ host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
+ host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
+ host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
+ host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
+ host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
+ host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
+ host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
+ host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
+ host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
+ host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
+ host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
+ host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
+}
+
+static void host_to_target_termios (void *dst, const void *src)
+{
+ struct target_termios *target = dst;
+ const struct host_termios *host = src;
+
+ target->c_iflag =
+ tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
+ target->c_oflag =
+ tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
+ target->c_cflag =
+ tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
+ target->c_lflag =
+ tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
+ target->c_line = host->c_line;
+
+ memset(target->c_cc, 0, sizeof(target->c_cc));
+ target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
+ target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
+ target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
+ target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
+ target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
+ target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
+ target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
+ target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
+ target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
+ target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
+ target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
+ target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
+ target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
+ target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
+ target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
+ target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
+ target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
+}
+
+static const StructEntry struct_termios_def = {
+ .convert = { host_to_target_termios, target_to_host_termios },
+ .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
+ .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
+ .print = print_termios,
+};
+
+static bitmask_transtbl mmap_flags_tbl[] = {
+ { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
+ { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
+ { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
+ { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
+ MAP_ANONYMOUS, MAP_ANONYMOUS },
+ { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
+ MAP_GROWSDOWN, MAP_GROWSDOWN },
+ { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
+ MAP_DENYWRITE, MAP_DENYWRITE },
+ { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
+ MAP_EXECUTABLE, MAP_EXECUTABLE },
+ { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
+ { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
+ MAP_NORESERVE, MAP_NORESERVE },
+ { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
+ /* MAP_STACK had been ignored by the kernel for quite some time.
+ Recognize it for the target insofar as we do not want to pass
+ it through to the host. */
+ { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
+ { 0, 0, 0, 0 }
+};
+
+/*
+ * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
+ * TARGET_I386 is defined if TARGET_X86_64 is defined
+ */
+#if defined(TARGET_I386)
+
+/* NOTE: there is really one LDT for all the threads */
+static uint8_t *ldt_table;
+
+static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
+{
+ int size;
+ void *p;
+
+ if (!ldt_table)
+ return 0;
+ size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
+ if (size > bytecount)
+ size = bytecount;
+ p = lock_user(VERIFY_WRITE, ptr, size, 0);
+ if (!p)
+ return -TARGET_EFAULT;
+ /* ??? Should this by byteswapped? */
+ memcpy(p, ldt_table, size);
+ unlock_user(p, ptr, size);
+ return size;
+}
+
+/* XXX: add locking support */
+static abi_long write_ldt(CPUX86State *env,
+ abi_ulong ptr, unsigned long bytecount, int oldmode)
+{
+ struct target_modify_ldt_ldt_s ldt_info;
+ struct target_modify_ldt_ldt_s *target_ldt_info;
+ int seg_32bit, contents, read_exec_only, limit_in_pages;
+ int seg_not_present, useable, lm;
+ uint32_t *lp, entry_1, entry_2;
+
+ if (bytecount != sizeof(ldt_info))
+ return -TARGET_EINVAL;
+ if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
+ return -TARGET_EFAULT;
+ ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
+ ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
+ ldt_info.limit = tswap32(target_ldt_info->limit);
+ ldt_info.flags = tswap32(target_ldt_info->flags);
+ unlock_user_struct(target_ldt_info, ptr, 0);
+
+ if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
+ return -TARGET_EINVAL;
+ seg_32bit = ldt_info.flags & 1;
+ contents = (ldt_info.flags >> 1) & 3;
+ read_exec_only = (ldt_info.flags >> 3) & 1;
+ limit_in_pages = (ldt_info.flags >> 4) & 1;
+ seg_not_present = (ldt_info.flags >> 5) & 1;
+ useable = (ldt_info.flags >> 6) & 1;
+#ifdef TARGET_ABI32
+ lm = 0;
+#else
+ lm = (ldt_info.flags >> 7) & 1;
+#endif
+ if (contents == 3) {
+ if (oldmode)
+ return -TARGET_EINVAL;
+ if (seg_not_present == 0)
+ return -TARGET_EINVAL;
+ }
+ /* allocate the LDT */
+ if (!ldt_table) {
+ env->ldt.base = target_mmap(0,
+ TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
+ PROT_READ|PROT_WRITE,
+ MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+ if (env->ldt.base == -1)
+ return -TARGET_ENOMEM;
+ memset(g2h_untagged(env->ldt.base), 0,
+ TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
+ env->ldt.limit = 0xffff;
+ ldt_table = g2h_untagged(env->ldt.base);
+ }
+
+ /* NOTE: same code as Linux kernel */
+ /* Allow LDTs to be cleared by the user. */
+ if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
+ if (oldmode ||
+ (contents == 0 &&
+ read_exec_only == 1 &&
+ seg_32bit == 0 &&
+ limit_in_pages == 0 &&
+ seg_not_present == 1 &&
+ useable == 0 )) {
+ entry_1 = 0;
+ entry_2 = 0;
+ goto install;
+ }
+ }
+
+ entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
+ (ldt_info.limit & 0x0ffff);
+ entry_2 = (ldt_info.base_addr & 0xff000000) |
+ ((ldt_info.base_addr & 0x00ff0000) >> 16) |
+ (ldt_info.limit & 0xf0000) |
+ ((read_exec_only ^ 1) << 9) |
+ (contents << 10) |
+ ((seg_not_present ^ 1) << 15) |
+ (seg_32bit << 22) |
+ (limit_in_pages << 23) |
+ (lm << 21) |
+ 0x7000;
+ if (!oldmode)
+ entry_2 |= (useable << 20);
+
+ /* Install the new entry ... */
+install:
+ lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
+ lp[0] = tswap32(entry_1);
+ lp[1] = tswap32(entry_2);
+ return 0;
+}
+
+/* specific and weird i386 syscalls */
+static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
+ unsigned long bytecount)
+{
+ abi_long ret;
+
+ switch (func) {
+ case 0:
+ ret = read_ldt(ptr, bytecount);
+ break;
+ case 1:
+ ret = write_ldt(env, ptr, bytecount, 1);
+ break;
+ case 0x11:
+ ret = write_ldt(env, ptr, bytecount, 0);
+ break;
+ default:
+ ret = -TARGET_ENOSYS;
+ break;
+ }
+ return ret;
+}
+
+#if defined(TARGET_ABI32)
+abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
+{
+ uint64_t *gdt_table = g2h_untagged(env->gdt.base);
+ struct target_modify_ldt_ldt_s ldt_info;
+ struct target_modify_ldt_ldt_s *target_ldt_info;
+ int seg_32bit, contents, read_exec_only, limit_in_pages;
+ int seg_not_present, useable, lm;
+ uint32_t *lp, entry_1, entry_2;
+ int i;
+
+ lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
+ if (!target_ldt_info)
+ return -TARGET_EFAULT;
+ ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
+ ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
+ ldt_info.limit = tswap32(target_ldt_info->limit);
+ ldt_info.flags = tswap32(target_ldt_info->flags);
+ if (ldt_info.entry_number == -1) {
+ for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
+ if (gdt_table[i] == 0) {
+ ldt_info.entry_number = i;
+ target_ldt_info->entry_number = tswap32(i);
+ break;
+ }
+ }
+ }
+ unlock_user_struct(target_ldt_info, ptr, 1);
+
+ if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
+ ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
+ return -TARGET_EINVAL;
+ seg_32bit = ldt_info.flags & 1;
+ contents = (ldt_info.flags >> 1) & 3;
+ read_exec_only = (ldt_info.flags >> 3) & 1;
+ limit_in_pages = (ldt_info.flags >> 4) & 1;
+ seg_not_present = (ldt_info.flags >> 5) & 1;
+ useable = (ldt_info.flags >> 6) & 1;
+#ifdef TARGET_ABI32
+ lm = 0;
+#else
+ lm = (ldt_info.flags >> 7) & 1;
+#endif
+
+ if (contents == 3) {
+ if (seg_not_present == 0)
+ return -TARGET_EINVAL;
+ }
+
+ /* NOTE: same code as Linux kernel */
+ /* Allow LDTs to be cleared by the user. */
+ if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
+ if ((contents == 0 &&
+ read_exec_only == 1 &&
+ seg_32bit == 0 &&
+ limit_in_pages == 0 &&
+ seg_not_present == 1 &&
+ useable == 0 )) {
+ entry_1 = 0;
+ entry_2 = 0;
+ goto install;
+ }
+ }
+
+ entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
+ (ldt_info.limit & 0x0ffff);
+ entry_2 = (ldt_info.base_addr & 0xff000000) |
+ ((ldt_info.base_addr & 0x00ff0000) >> 16) |
+ (ldt_info.limit & 0xf0000) |
+ ((read_exec_only ^ 1) << 9) |
+ (contents << 10) |
+ ((seg_not_present ^ 1) << 15) |
+ (seg_32bit << 22) |
+ (limit_in_pages << 23) |
+ (useable << 20) |
+ (lm << 21) |
+ 0x7000;
+
+ /* Install the new entry ... */
+install:
+ lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
+ lp[0] = tswap32(entry_1);
+ lp[1] = tswap32(entry_2);
+ return 0;
+}
+
+static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
+{
+ struct target_modify_ldt_ldt_s *target_ldt_info;
+ uint64_t *gdt_table = g2h_untagged(env->gdt.base);
+ uint32_t base_addr, limit, flags;
+ int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
+ int seg_not_present, useable, lm;
+ uint32_t *lp, entry_1, entry_2;
+
+ lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
+ if (!target_ldt_info)
+ return -TARGET_EFAULT;
+ idx = tswap32(target_ldt_info->entry_number);
+ if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
+ idx > TARGET_GDT_ENTRY_TLS_MAX) {
+ unlock_user_struct(target_ldt_info, ptr, 1);
+ return -TARGET_EINVAL;
+ }
+ lp = (uint32_t *)(gdt_table + idx);
+ entry_1 = tswap32(lp[0]);
+ entry_2 = tswap32(lp[1]);
+
+ read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
+ contents = (entry_2 >> 10) & 3;
+ seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
+ seg_32bit = (entry_2 >> 22) & 1;
+ limit_in_pages = (entry_2 >> 23) & 1;
+ useable = (entry_2 >> 20) & 1;
+#ifdef TARGET_ABI32
+ lm = 0;
+#else
+ lm = (entry_2 >> 21) & 1;
+#endif
+ flags = (seg_32bit << 0) | (contents << 1) |
+ (read_exec_only << 3) | (limit_in_pages << 4) |
+ (seg_not_present << 5) | (useable << 6) | (lm << 7);
+ limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
+ base_addr = (entry_1 >> 16) |
+ (entry_2 & 0xff000000) |
+ ((entry_2 & 0xff) << 16);
+ target_ldt_info->base_addr = tswapal(base_addr);
+ target_ldt_info->limit = tswap32(limit);
+ target_ldt_info->flags = tswap32(flags);
+ unlock_user_struct(target_ldt_info, ptr, 1);
+ return 0;
+}
+
+abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
+{
+ return -TARGET_ENOSYS;
+}
+#else
+abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
+{
+ abi_long ret = 0;
+ abi_ulong val;
+ int idx;
+
+ switch(code) {
+ case TARGET_ARCH_SET_GS:
+ case TARGET_ARCH_SET_FS:
+ if (code == TARGET_ARCH_SET_GS)
+ idx = R_GS;
+ else
+ idx = R_FS;
+ cpu_x86_load_seg(env, idx, 0);
+ env->segs[idx].base = addr;
+ break;
+ case TARGET_ARCH_GET_GS:
+ case TARGET_ARCH_GET_FS:
+ if (code == TARGET_ARCH_GET_GS)
+ idx = R_GS;
+ else
+ idx = R_FS;
+ val = env->segs[idx].base;
+ if (put_user(val, addr, abi_ulong))
+ ret = -TARGET_EFAULT;
+ break;
+ default:
+ ret = -TARGET_EINVAL;
+ break;
+ }
+ return ret;
+}
+#endif /* defined(TARGET_ABI32 */
+
+#endif /* defined(TARGET_I386) */
+
+#define NEW_STACK_SIZE 0x40000
+
+
+static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
+typedef struct {
+ CPUArchState *env;
+ pthread_mutex_t mutex;
+ pthread_cond_t cond;
+ pthread_t thread;
+ uint32_t tid;
+ abi_ulong child_tidptr;
+ abi_ulong parent_tidptr;
+ sigset_t sigmask;
+} new_thread_info;
+
+static void *clone_func(void *arg)
+{
+ new_thread_info *info = arg;
+ CPUArchState *env;
+ CPUState *cpu;
+ TaskState *ts;
+
+ rcu_register_thread();
+ tcg_register_thread();
+ env = info->env;
+ cpu = env_cpu(env);
+ thread_cpu = cpu;
+ ts = (TaskState *)cpu->opaque;
+ info->tid = sys_gettid();
+ task_settid(ts);
+ if (info->child_tidptr)
+ put_user_u32(info->tid, info->child_tidptr);
+ if (info->parent_tidptr)
+ put_user_u32(info->tid, info->parent_tidptr);
+ qemu_guest_random_seed_thread_part2(cpu->random_seed);
+ /* Enable signals. */
+ sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
+ /* Signal to the parent that we're ready. */
+ pthread_mutex_lock(&info->mutex);
+ pthread_cond_broadcast(&info->cond);
+ pthread_mutex_unlock(&info->mutex);
+ /* Wait until the parent has finished initializing the tls state. */
+ pthread_mutex_lock(&clone_lock);
+ pthread_mutex_unlock(&clone_lock);
+ cpu_loop(env);
+ /* never exits */
+ return NULL;
+}
+
+/* do_fork() Must return host values and target errnos (unlike most
+ do_*() functions). */
+static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
+ abi_ulong parent_tidptr, target_ulong newtls,
+ abi_ulong child_tidptr)
+{
+ CPUState *cpu = env_cpu(env);
+ int ret;
+ TaskState *ts;
+ CPUState *new_cpu;
+ CPUArchState *new_env;
+ sigset_t sigmask;
+
+ flags &= ~CLONE_IGNORED_FLAGS;
+
+ /* Emulate vfork() with fork() */
+ if (flags & CLONE_VFORK)
+ flags &= ~(CLONE_VFORK | CLONE_VM);
+
+ if (flags & CLONE_VM) {
+ TaskState *parent_ts = (TaskState *)cpu->opaque;
+ new_thread_info info;
+ pthread_attr_t attr;
+
+ if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
+ (flags & CLONE_INVALID_THREAD_FLAGS)) {
+ return -TARGET_EINVAL;
+ }
+
+ ts = g_new0(TaskState, 1);
+ init_task_state(ts);
+
+ /* Grab a mutex so that thread setup appears atomic. */
+ pthread_mutex_lock(&clone_lock);
+
+ /* we create a new CPU instance. */
+ new_env = cpu_copy(env);
+ /* Init regs that differ from the parent. */
+ cpu_clone_regs_child(new_env, newsp, flags);
+ cpu_clone_regs_parent(env, flags);
+ new_cpu = env_cpu(new_env);
+ new_cpu->opaque = ts;
+ ts->bprm = parent_ts->bprm;
+ ts->info = parent_ts->info;
+ ts->signal_mask = parent_ts->signal_mask;
+
+ if (flags & CLONE_CHILD_CLEARTID) {
+ ts->child_tidptr = child_tidptr;
+ }
+
+ if (flags & CLONE_SETTLS) {
+ cpu_set_tls (new_env, newtls);
+ }
+
+ memset(&info, 0, sizeof(info));
+ pthread_mutex_init(&info.mutex, NULL);
+ pthread_mutex_lock(&info.mutex);
+ pthread_cond_init(&info.cond, NULL);
+ info.env = new_env;
+ if (flags & CLONE_CHILD_SETTID) {
+ info.child_tidptr = child_tidptr;
+ }
+ if (flags & CLONE_PARENT_SETTID) {
+ info.parent_tidptr = parent_tidptr;
+ }
+
+ ret = pthread_attr_init(&attr);
+ ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
+ ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+ /* It is not safe to deliver signals until the child has finished
+ initializing, so temporarily block all signals. */
+ sigfillset(&sigmask);
+ sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
+ cpu->random_seed = qemu_guest_random_seed_thread_part1();
+
+ /* If this is our first additional thread, we need to ensure we
+ * generate code for parallel execution and flush old translations.
+ */
+ if (!parallel_cpus) {
+ parallel_cpus = true;
+ tb_flush(cpu);
+ }
+
+ ret = pthread_create(&info.thread, &attr, clone_func, &info);
+ /* TODO: Free new CPU state if thread creation failed. */
+
+ sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
+ pthread_attr_destroy(&attr);
+ if (ret == 0) {
+ /* Wait for the child to initialize. */
+ pthread_cond_wait(&info.cond, &info.mutex);
+ ret = info.tid;
+ } else {
+ ret = -1;
+ }
+ pthread_mutex_unlock(&info.mutex);
+ pthread_cond_destroy(&info.cond);
+ pthread_mutex_destroy(&info.mutex);
+ pthread_mutex_unlock(&clone_lock);
+ } else {
+ /* if no CLONE_VM, we consider it is a fork */
+ if (flags & CLONE_INVALID_FORK_FLAGS) {
+ return -TARGET_EINVAL;
+ }
+
+ /* We can't support custom termination signals */
+ if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
+ return -TARGET_EINVAL;
+ }
+
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+
+ fork_start();
+ ret = fork();
+ if (ret == 0) {
+ /* Child Process. */
+ cpu_clone_regs_child(env, newsp, flags);
+ fork_end(1);
+ /* There is a race condition here. The parent process could
+ theoretically read the TID in the child process before the child
+ tid is set. This would require using either ptrace
+ (not implemented) or having *_tidptr to point at a shared memory
+ mapping. We can't repeat the spinlock hack used above because
+ the child process gets its own copy of the lock. */
+ if (flags & CLONE_CHILD_SETTID)
+ put_user_u32(sys_gettid(), child_tidptr);
+ if (flags & CLONE_PARENT_SETTID)
+ put_user_u32(sys_gettid(), parent_tidptr);
+ ts = (TaskState *)cpu->opaque;
+ if (flags & CLONE_SETTLS)
+ cpu_set_tls (env, newtls);
+ if (flags & CLONE_CHILD_CLEARTID)
+ ts->child_tidptr = child_tidptr;
+ } else {
+ cpu_clone_regs_parent(env, flags);
+ fork_end(0);
+ }
+ }
+ return ret;
+}
+
+/* warning : doesn't handle linux specific flags... */
+static int target_to_host_fcntl_cmd(int cmd)
+{
+ int ret;
+
+ switch(cmd) {
+ case TARGET_F_DUPFD:
+ case TARGET_F_GETFD:
+ case TARGET_F_SETFD:
+ case TARGET_F_GETFL:
+ case TARGET_F_SETFL:
+ case TARGET_F_OFD_GETLK:
+ case TARGET_F_OFD_SETLK:
+ case TARGET_F_OFD_SETLKW:
+ ret = cmd;
+ break;
+ case TARGET_F_GETLK:
+ ret = F_GETLK64;
+ break;
+ case TARGET_F_SETLK:
+ ret = F_SETLK64;
+ break;
+ case TARGET_F_SETLKW:
+ ret = F_SETLKW64;
+ break;
+ case TARGET_F_GETOWN:
+ ret = F_GETOWN;
+ break;
+ case TARGET_F_SETOWN:
+ ret = F_SETOWN;
+ break;
+ case TARGET_F_GETSIG:
+ ret = F_GETSIG;
+ break;
+ case TARGET_F_SETSIG:
+ ret = F_SETSIG;
+ break;
+#if TARGET_ABI_BITS == 32
+ case TARGET_F_GETLK64:
+ ret = F_GETLK64;
+ break;
+ case TARGET_F_SETLK64:
+ ret = F_SETLK64;
+ break;
+ case TARGET_F_SETLKW64:
+ ret = F_SETLKW64;
+ break;
+#endif
+ case TARGET_F_SETLEASE:
+ ret = F_SETLEASE;
+ break;
+ case TARGET_F_GETLEASE:
+ ret = F_GETLEASE;
+ break;
+#ifdef F_DUPFD_CLOEXEC
+ case TARGET_F_DUPFD_CLOEXEC:
+ ret = F_DUPFD_CLOEXEC;
+ break;
+#endif
+ case TARGET_F_NOTIFY:
+ ret = F_NOTIFY;
+ break;
+#ifdef F_GETOWN_EX
+ case TARGET_F_GETOWN_EX:
+ ret = F_GETOWN_EX;
+ break;
+#endif
+#ifdef F_SETOWN_EX
+ case TARGET_F_SETOWN_EX:
+ ret = F_SETOWN_EX;
+ break;
+#endif
+#ifdef F_SETPIPE_SZ
+ case TARGET_F_SETPIPE_SZ:
+ ret = F_SETPIPE_SZ;
+ break;
+ case TARGET_F_GETPIPE_SZ:
+ ret = F_GETPIPE_SZ;
+ break;
+#endif
+#ifdef F_ADD_SEALS
+ case TARGET_F_ADD_SEALS:
+ ret = F_ADD_SEALS;
+ break;
+ case TARGET_F_GET_SEALS:
+ ret = F_GET_SEALS;
+ break;
+#endif
+ default:
+ ret = -TARGET_EINVAL;
+ break;
+ }
+
+#if defined(__powerpc64__)
+ /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
+ * is not supported by kernel. The glibc fcntl call actually adjusts
+ * them to 5, 6 and 7 before making the syscall(). Since we make the
+ * syscall directly, adjust to what is supported by the kernel.
+ */
+ if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
+ ret -= F_GETLK64 - 5;
+ }
+#endif
+
+ return ret;
+}
+
+#define FLOCK_TRANSTBL \
+ switch (type) { \
+ TRANSTBL_CONVERT(F_RDLCK); \
+ TRANSTBL_CONVERT(F_WRLCK); \
+ TRANSTBL_CONVERT(F_UNLCK); \
+ }
+
+static int target_to_host_flock(int type)
+{
+#define TRANSTBL_CONVERT(a) case TARGET_##a: return a
+ FLOCK_TRANSTBL
+#undef TRANSTBL_CONVERT
+ return -TARGET_EINVAL;
+}
+
+static int host_to_target_flock(int type)
+{
+#define TRANSTBL_CONVERT(a) case a: return TARGET_##a
+ FLOCK_TRANSTBL
+#undef TRANSTBL_CONVERT
+ /* if we don't know how to convert the value coming
+ * from the host we copy to the target field as-is
+ */
+ return type;
+}
+
+static inline abi_long copy_from_user_flock(struct flock64 *fl,
+ abi_ulong target_flock_addr)
+{
+ struct target_flock *target_fl;
+ int l_type;
+
+ if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(l_type, &target_fl->l_type);
+ l_type = target_to_host_flock(l_type);
+ if (l_type < 0) {
+ return l_type;
+ }
+ fl->l_type = l_type;
+ __get_user(fl->l_whence, &target_fl->l_whence);
+ __get_user(fl->l_start, &target_fl->l_start);
+ __get_user(fl->l_len, &target_fl->l_len);
+ __get_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 0);
+ return 0;
+}
+
+static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
+ const struct flock64 *fl)
+{
+ struct target_flock *target_fl;
+ short l_type;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ l_type = host_to_target_flock(fl->l_type);
+ __put_user(l_type, &target_fl->l_type);
+ __put_user(fl->l_whence, &target_fl->l_whence);
+ __put_user(fl->l_start, &target_fl->l_start);
+ __put_user(fl->l_len, &target_fl->l_len);
+ __put_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 1);
+ return 0;
+}
+
+typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
+typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
+
+#if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
+static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
+ abi_ulong target_flock_addr)
+{
+ struct target_oabi_flock64 *target_fl;
+ int l_type;
+
+ if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(l_type, &target_fl->l_type);
+ l_type = target_to_host_flock(l_type);
+ if (l_type < 0) {
+ return l_type;
+ }
+ fl->l_type = l_type;
+ __get_user(fl->l_whence, &target_fl->l_whence);
+ __get_user(fl->l_start, &target_fl->l_start);
+ __get_user(fl->l_len, &target_fl->l_len);
+ __get_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 0);
+ return 0;
+}
+
+static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
+ const struct flock64 *fl)
+{
+ struct target_oabi_flock64 *target_fl;
+ short l_type;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ l_type = host_to_target_flock(fl->l_type);
+ __put_user(l_type, &target_fl->l_type);
+ __put_user(fl->l_whence, &target_fl->l_whence);
+ __put_user(fl->l_start, &target_fl->l_start);
+ __put_user(fl->l_len, &target_fl->l_len);
+ __put_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 1);
+ return 0;
+}
+#endif
+
+static inline abi_long copy_from_user_flock64(struct flock64 *fl,
+ abi_ulong target_flock_addr)
+{
+ struct target_flock64 *target_fl;
+ int l_type;
+
+ if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(l_type, &target_fl->l_type);
+ l_type = target_to_host_flock(l_type);
+ if (l_type < 0) {
+ return l_type;
+ }
+ fl->l_type = l_type;
+ __get_user(fl->l_whence, &target_fl->l_whence);
+ __get_user(fl->l_start, &target_fl->l_start);
+ __get_user(fl->l_len, &target_fl->l_len);
+ __get_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 0);
+ return 0;
+}
+
+static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
+ const struct flock64 *fl)
+{
+ struct target_flock64 *target_fl;
+ short l_type;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ l_type = host_to_target_flock(fl->l_type);
+ __put_user(l_type, &target_fl->l_type);
+ __put_user(fl->l_whence, &target_fl->l_whence);
+ __put_user(fl->l_start, &target_fl->l_start);
+ __put_user(fl->l_len, &target_fl->l_len);
+ __put_user(fl->l_pid, &target_fl->l_pid);
+ unlock_user_struct(target_fl, target_flock_addr, 1);
+ return 0;
+}
+
+static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
+{
+ struct flock64 fl64;
+#ifdef F_GETOWN_EX
+ struct f_owner_ex fox;
+ struct target_f_owner_ex *target_fox;
+#endif
+ abi_long ret;
+ int host_cmd = target_to_host_fcntl_cmd(cmd);
+
+ if (host_cmd == -TARGET_EINVAL)
+ return host_cmd;
+
+ switch(cmd) {
+ case TARGET_F_GETLK:
+ ret = copy_from_user_flock(&fl64, arg);
+ if (ret) {
+ return ret;
+ }
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
+ if (ret == 0) {
+ ret = copy_to_user_flock(arg, &fl64);
+ }
+ break;
+
+ case TARGET_F_SETLK:
+ case TARGET_F_SETLKW:
+ ret = copy_from_user_flock(&fl64, arg);
+ if (ret) {
+ return ret;
+ }
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
+ break;
+
+ case TARGET_F_GETLK64:
+ case TARGET_F_OFD_GETLK:
+ ret = copy_from_user_flock64(&fl64, arg);
+ if (ret) {
+ return ret;
+ }
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
+ if (ret == 0) {
+ ret = copy_to_user_flock64(arg, &fl64);
+ }
+ break;
+ case TARGET_F_SETLK64:
+ case TARGET_F_SETLKW64:
+ case TARGET_F_OFD_SETLK:
+ case TARGET_F_OFD_SETLKW:
+ ret = copy_from_user_flock64(&fl64, arg);
+ if (ret) {
+ return ret;
+ }
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
+ break;
+
+ case TARGET_F_GETFL:
+ ret = get_errno(safe_fcntl(fd, host_cmd, arg));
+ if (ret >= 0) {
+ ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
+ }
+ break;
+
+ case TARGET_F_SETFL:
+ ret = get_errno(safe_fcntl(fd, host_cmd,
+ target_to_host_bitmask(arg,
+ fcntl_flags_tbl)));
+ break;
+
+#ifdef F_GETOWN_EX
+ case TARGET_F_GETOWN_EX:
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
+ if (ret >= 0) {
+ if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
+ return -TARGET_EFAULT;
+ target_fox->type = tswap32(fox.type);
+ target_fox->pid = tswap32(fox.pid);
+ unlock_user_struct(target_fox, arg, 1);
+ }
+ break;
+#endif
+
+#ifdef F_SETOWN_EX
+ case TARGET_F_SETOWN_EX:
+ if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
+ return -TARGET_EFAULT;
+ fox.type = tswap32(target_fox->type);
+ fox.pid = tswap32(target_fox->pid);
+ unlock_user_struct(target_fox, arg, 0);
+ ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
+ break;
+#endif
+
+ case TARGET_F_SETSIG:
+ ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg)));
+ break;
+
+ case TARGET_F_GETSIG:
+ ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg)));
+ break;
+
+ case TARGET_F_SETOWN:
+ case TARGET_F_GETOWN:
+ case TARGET_F_SETLEASE:
+ case TARGET_F_GETLEASE:
+ case TARGET_F_SETPIPE_SZ:
+ case TARGET_F_GETPIPE_SZ:
+ case TARGET_F_ADD_SEALS:
+ case TARGET_F_GET_SEALS:
+ ret = get_errno(safe_fcntl(fd, host_cmd, arg));
+ break;
+
+ default:
+ ret = get_errno(safe_fcntl(fd, cmd, arg));
+ break;
+ }
+ return ret;
+}
+
+#ifdef USE_UID16
+
+static inline int high2lowuid(int uid)
+{
+ if (uid > 65535)
+ return 65534;
+ else
+ return uid;
+}
+
+static inline int high2lowgid(int gid)
+{
+ if (gid > 65535)
+ return 65534;
+ else
+ return gid;
+}
+
+static inline int low2highuid(int uid)
+{
+ if ((int16_t)uid == -1)
+ return -1;
+ else
+ return uid;
+}
+
+static inline int low2highgid(int gid)
+{
+ if ((int16_t)gid == -1)
+ return -1;
+ else
+ return gid;
+}
+static inline int tswapid(int id)
+{
+ return tswap16(id);
+}
+
+#define put_user_id(x, gaddr) put_user_u16(x, gaddr)
+
+#else /* !USE_UID16 */
+static inline int high2lowuid(int uid)
+{
+ return uid;
+}
+static inline int high2lowgid(int gid)
+{
+ return gid;
+}
+static inline int low2highuid(int uid)
+{
+ return uid;
+}
+static inline int low2highgid(int gid)
+{
+ return gid;
+}
+static inline int tswapid(int id)
+{
+ return tswap32(id);
+}
+
+#define put_user_id(x, gaddr) put_user_u32(x, gaddr)
+
+#endif /* USE_UID16 */
+
+/* We must do direct syscalls for setting UID/GID, because we want to
+ * implement the Linux system call semantics of "change only for this thread",
+ * not the libc/POSIX semantics of "change for all threads in process".
+ * (See http://ewontfix.com/17/ for more details.)
+ * We use the 32-bit version of the syscalls if present; if it is not
+ * then either the host architecture supports 32-bit UIDs natively with
+ * the standard syscall, or the 16-bit UID is the best we can do.
+ */
+#ifdef __NR_setuid32
+#define __NR_sys_setuid __NR_setuid32
+#else
+#define __NR_sys_setuid __NR_setuid
+#endif
+#ifdef __NR_setgid32
+#define __NR_sys_setgid __NR_setgid32
+#else
+#define __NR_sys_setgid __NR_setgid
+#endif
+#ifdef __NR_setresuid32
+#define __NR_sys_setresuid __NR_setresuid32
+#else
+#define __NR_sys_setresuid __NR_setresuid
+#endif
+#ifdef __NR_setresgid32
+#define __NR_sys_setresgid __NR_setresgid32
+#else
+#define __NR_sys_setresgid __NR_setresgid
+#endif
+
+_syscall1(int, sys_setuid, uid_t, uid)
+_syscall1(int, sys_setgid, gid_t, gid)
+_syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
+_syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
+
+void syscall_init(void)
+{
+ IOCTLEntry *ie;
+ const argtype *arg_type;
+ int size;
+ int i;
+
+ thunk_init(STRUCT_MAX);
+
+#define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
+#define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
+#include "syscall_types.h"
+#undef STRUCT
+#undef STRUCT_SPECIAL
+
+ /* Build target_to_host_errno_table[] table from
+ * host_to_target_errno_table[]. */
+ for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
+ target_to_host_errno_table[host_to_target_errno_table[i]] = i;
+ }
+
+ /* we patch the ioctl size if necessary. We rely on the fact that
+ no ioctl has all the bits at '1' in the size field */
+ ie = ioctl_entries;
+ while (ie->target_cmd != 0) {
+ if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
+ TARGET_IOC_SIZEMASK) {
+ arg_type = ie->arg_type;
+ if (arg_type[0] != TYPE_PTR) {
+ fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
+ ie->target_cmd);
+ exit(1);
+ }
+ arg_type++;
+ size = thunk_type_size(arg_type, 0);
+ ie->target_cmd = (ie->target_cmd &
+ ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
+ (size << TARGET_IOC_SIZESHIFT);
+ }
+
+ /* automatic consistency check if same arch */
+#if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
+ (defined(__x86_64__) && defined(TARGET_X86_64))
+ if (unlikely(ie->target_cmd != ie->host_cmd)) {
+ fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
+ ie->name, ie->target_cmd, ie->host_cmd);
+ }
+#endif
+ ie++;
+ }
+}
+
+#ifdef TARGET_NR_truncate64
+static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
+ abi_long arg2,
+ abi_long arg3,
+ abi_long arg4)
+{
+ if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
+ arg2 = arg3;
+ arg3 = arg4;
+ }
+ return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
+}
+#endif
+
+#ifdef TARGET_NR_ftruncate64
+static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
+ abi_long arg2,
+ abi_long arg3,
+ abi_long arg4)
+{
+ if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
+ arg2 = arg3;
+ arg3 = arg4;
+ }
+ return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
+}
+#endif
+
+#if defined(TARGET_NR_timer_settime) || \
+ (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
+static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its,
+ abi_ulong target_addr)
+{
+ if (target_to_host_timespec(&host_its->it_interval, target_addr +
+ offsetof(struct target_itimerspec,
+ it_interval)) ||
+ target_to_host_timespec(&host_its->it_value, target_addr +
+ offsetof(struct target_itimerspec,
+ it_value))) {
+ return -TARGET_EFAULT;
+ }
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_timer_settime64) || \
+ (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD))
+static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its,
+ abi_ulong target_addr)
+{
+ if (target_to_host_timespec64(&host_its->it_interval, target_addr +
+ offsetof(struct target__kernel_itimerspec,
+ it_interval)) ||
+ target_to_host_timespec64(&host_its->it_value, target_addr +
+ offsetof(struct target__kernel_itimerspec,
+ it_value))) {
+ return -TARGET_EFAULT;
+ }
+
+ return 0;
+}
+#endif
+
+#if ((defined(TARGET_NR_timerfd_gettime) || \
+ defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
+ defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
+static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
+ struct itimerspec *host_its)
+{
+ if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
+ it_interval),
+ &host_its->it_interval) ||
+ host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
+ it_value),
+ &host_its->it_value)) {
+ return -TARGET_EFAULT;
+ }
+ return 0;
+}
+#endif
+
+#if ((defined(TARGET_NR_timerfd_gettime64) || \
+ defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \
+ defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64)
+static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr,
+ struct itimerspec *host_its)
+{
+ if (host_to_target_timespec64(target_addr +
+ offsetof(struct target__kernel_itimerspec,
+ it_interval),
+ &host_its->it_interval) ||
+ host_to_target_timespec64(target_addr +
+ offsetof(struct target__kernel_itimerspec,
+ it_value),
+ &host_its->it_value)) {
+ return -TARGET_EFAULT;
+ }
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_adjtimex) || \
+ (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
+static inline abi_long target_to_host_timex(struct timex *host_tx,
+ abi_long target_addr)
+{
+ struct target_timex *target_tx;
+
+ if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(host_tx->modes, &target_tx->modes);
+ __get_user(host_tx->offset, &target_tx->offset);
+ __get_user(host_tx->freq, &target_tx->freq);
+ __get_user(host_tx->maxerror, &target_tx->maxerror);
+ __get_user(host_tx->esterror, &target_tx->esterror);
+ __get_user(host_tx->status, &target_tx->status);
+ __get_user(host_tx->constant, &target_tx->constant);
+ __get_user(host_tx->precision, &target_tx->precision);
+ __get_user(host_tx->tolerance, &target_tx->tolerance);
+ __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
+ __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
+ __get_user(host_tx->tick, &target_tx->tick);
+ __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
+ __get_user(host_tx->jitter, &target_tx->jitter);
+ __get_user(host_tx->shift, &target_tx->shift);
+ __get_user(host_tx->stabil, &target_tx->stabil);
+ __get_user(host_tx->jitcnt, &target_tx->jitcnt);
+ __get_user(host_tx->calcnt, &target_tx->calcnt);
+ __get_user(host_tx->errcnt, &target_tx->errcnt);
+ __get_user(host_tx->stbcnt, &target_tx->stbcnt);
+ __get_user(host_tx->tai, &target_tx->tai);
+
+ unlock_user_struct(target_tx, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_timex(abi_long target_addr,
+ struct timex *host_tx)
+{
+ struct target_timex *target_tx;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(host_tx->modes, &target_tx->modes);
+ __put_user(host_tx->offset, &target_tx->offset);
+ __put_user(host_tx->freq, &target_tx->freq);
+ __put_user(host_tx->maxerror, &target_tx->maxerror);
+ __put_user(host_tx->esterror, &target_tx->esterror);
+ __put_user(host_tx->status, &target_tx->status);
+ __put_user(host_tx->constant, &target_tx->constant);
+ __put_user(host_tx->precision, &target_tx->precision);
+ __put_user(host_tx->tolerance, &target_tx->tolerance);
+ __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
+ __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
+ __put_user(host_tx->tick, &target_tx->tick);
+ __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
+ __put_user(host_tx->jitter, &target_tx->jitter);
+ __put_user(host_tx->shift, &target_tx->shift);
+ __put_user(host_tx->stabil, &target_tx->stabil);
+ __put_user(host_tx->jitcnt, &target_tx->jitcnt);
+ __put_user(host_tx->calcnt, &target_tx->calcnt);
+ __put_user(host_tx->errcnt, &target_tx->errcnt);
+ __put_user(host_tx->stbcnt, &target_tx->stbcnt);
+ __put_user(host_tx->tai, &target_tx->tai);
+
+ unlock_user_struct(target_tx, target_addr, 1);
+ return 0;
+}
+#endif
+
+
+#if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
+static inline abi_long target_to_host_timex64(struct timex *host_tx,
+ abi_long target_addr)
+{
+ struct target__kernel_timex *target_tx;
+
+ if (copy_from_user_timeval64(&host_tx->time, target_addr +
+ offsetof(struct target__kernel_timex,
+ time))) {
+ return -TARGET_EFAULT;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __get_user(host_tx->modes, &target_tx->modes);
+ __get_user(host_tx->offset, &target_tx->offset);
+ __get_user(host_tx->freq, &target_tx->freq);
+ __get_user(host_tx->maxerror, &target_tx->maxerror);
+ __get_user(host_tx->esterror, &target_tx->esterror);
+ __get_user(host_tx->status, &target_tx->status);
+ __get_user(host_tx->constant, &target_tx->constant);
+ __get_user(host_tx->precision, &target_tx->precision);
+ __get_user(host_tx->tolerance, &target_tx->tolerance);
+ __get_user(host_tx->tick, &target_tx->tick);
+ __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
+ __get_user(host_tx->jitter, &target_tx->jitter);
+ __get_user(host_tx->shift, &target_tx->shift);
+ __get_user(host_tx->stabil, &target_tx->stabil);
+ __get_user(host_tx->jitcnt, &target_tx->jitcnt);
+ __get_user(host_tx->calcnt, &target_tx->calcnt);
+ __get_user(host_tx->errcnt, &target_tx->errcnt);
+ __get_user(host_tx->stbcnt, &target_tx->stbcnt);
+ __get_user(host_tx->tai, &target_tx->tai);
+
+ unlock_user_struct(target_tx, target_addr, 0);
+ return 0;
+}
+
+static inline abi_long host_to_target_timex64(abi_long target_addr,
+ struct timex *host_tx)
+{
+ struct target__kernel_timex *target_tx;
+
+ if (copy_to_user_timeval64(target_addr +
+ offsetof(struct target__kernel_timex, time),
+ &host_tx->time)) {
+ return -TARGET_EFAULT;
+ }
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(host_tx->modes, &target_tx->modes);
+ __put_user(host_tx->offset, &target_tx->offset);
+ __put_user(host_tx->freq, &target_tx->freq);
+ __put_user(host_tx->maxerror, &target_tx->maxerror);
+ __put_user(host_tx->esterror, &target_tx->esterror);
+ __put_user(host_tx->status, &target_tx->status);
+ __put_user(host_tx->constant, &target_tx->constant);
+ __put_user(host_tx->precision, &target_tx->precision);
+ __put_user(host_tx->tolerance, &target_tx->tolerance);
+ __put_user(host_tx->tick, &target_tx->tick);
+ __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
+ __put_user(host_tx->jitter, &target_tx->jitter);
+ __put_user(host_tx->shift, &target_tx->shift);
+ __put_user(host_tx->stabil, &target_tx->stabil);
+ __put_user(host_tx->jitcnt, &target_tx->jitcnt);
+ __put_user(host_tx->calcnt, &target_tx->calcnt);
+ __put_user(host_tx->errcnt, &target_tx->errcnt);
+ __put_user(host_tx->stbcnt, &target_tx->stbcnt);
+ __put_user(host_tx->tai, &target_tx->tai);
+
+ unlock_user_struct(target_tx, target_addr, 1);
+ return 0;
+}
+#endif
+
+static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
+ abi_ulong target_addr)
+{
+ struct target_sigevent *target_sevp;
+
+ if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ /* This union is awkward on 64 bit systems because it has a 32 bit
+ * integer and a pointer in it; we follow the conversion approach
+ * used for handling sigval types in signal.c so the guest should get
+ * the correct value back even if we did a 64 bit byteswap and it's
+ * using the 32 bit integer.
+ */
+ host_sevp->sigev_value.sival_ptr =
+ (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
+ host_sevp->sigev_signo =
+ target_to_host_signal(tswap32(target_sevp->sigev_signo));
+ host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
+ host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
+
+ unlock_user_struct(target_sevp, target_addr, 1);
+ return 0;
+}
+
+#if defined(TARGET_NR_mlockall)
+static inline int target_to_host_mlockall_arg(int arg)
+{
+ int result = 0;
+
+ if (arg & TARGET_MCL_CURRENT) {
+ result |= MCL_CURRENT;
+ }
+ if (arg & TARGET_MCL_FUTURE) {
+ result |= MCL_FUTURE;
+ }
+#ifdef MCL_ONFAULT
+ if (arg & TARGET_MCL_ONFAULT) {
+ result |= MCL_ONFAULT;
+ }
+#endif
+
+ return result;
+}
+#endif
+
+#if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
+ defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
+ defined(TARGET_NR_newfstatat))
+static inline abi_long host_to_target_stat64(void *cpu_env,
+ abi_ulong target_addr,
+ struct stat *host_st)
+{
+#if defined(TARGET_ARM) && defined(TARGET_ABI32)
+ if (((CPUARMState *)cpu_env)->eabi) {
+ struct target_eabi_stat64 *target_st;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
+ return -TARGET_EFAULT;
+ memset(target_st, 0, sizeof(struct target_eabi_stat64));
+ __put_user(host_st->st_dev, &target_st->st_dev);
+ __put_user(host_st->st_ino, &target_st->st_ino);
+#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
+ __put_user(host_st->st_ino, &target_st->__st_ino);
+#endif
+ __put_user(host_st->st_mode, &target_st->st_mode);
+ __put_user(host_st->st_nlink, &target_st->st_nlink);
+ __put_user(host_st->st_uid, &target_st->st_uid);
+ __put_user(host_st->st_gid, &target_st->st_gid);
+ __put_user(host_st->st_rdev, &target_st->st_rdev);
+ __put_user(host_st->st_size, &target_st->st_size);
+ __put_user(host_st->st_blksize, &target_st->st_blksize);
+ __put_user(host_st->st_blocks, &target_st->st_blocks);
+ __put_user(host_st->st_atime, &target_st->target_st_atime);
+ __put_user(host_st->st_mtime, &target_st->target_st_mtime);
+ __put_user(host_st->st_ctime, &target_st->target_st_ctime);
+#if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
+ __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
+ __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
+ __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
+#endif
+ unlock_user_struct(target_st, target_addr, 1);
+ } else
+#endif
+ {
+#if defined(TARGET_HAS_STRUCT_STAT64)
+ struct target_stat64 *target_st;
+#else
+ struct target_stat *target_st;
+#endif
+
+ if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
+ return -TARGET_EFAULT;
+ memset(target_st, 0, sizeof(*target_st));
+ __put_user(host_st->st_dev, &target_st->st_dev);
+ __put_user(host_st->st_ino, &target_st->st_ino);
+#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
+ __put_user(host_st->st_ino, &target_st->__st_ino);
+#endif
+ __put_user(host_st->st_mode, &target_st->st_mode);
+ __put_user(host_st->st_nlink, &target_st->st_nlink);
+ __put_user(host_st->st_uid, &target_st->st_uid);
+ __put_user(host_st->st_gid, &target_st->st_gid);
+ __put_user(host_st->st_rdev, &target_st->st_rdev);
+ /* XXX: better use of kernel struct */
+ __put_user(host_st->st_size, &target_st->st_size);
+ __put_user(host_st->st_blksize, &target_st->st_blksize);
+ __put_user(host_st->st_blocks, &target_st->st_blocks);
+ __put_user(host_st->st_atime, &target_st->target_st_atime);
+ __put_user(host_st->st_mtime, &target_st->target_st_mtime);
+ __put_user(host_st->st_ctime, &target_st->target_st_ctime);
+#if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
+ __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
+ __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
+ __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
+#endif
+ unlock_user_struct(target_st, target_addr, 1);
+ }
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_NR_statx) && defined(__NR_statx)
+static inline abi_long host_to_target_statx(struct target_statx *host_stx,
+ abi_ulong target_addr)
+{
+ struct target_statx *target_stx;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ memset(target_stx, 0, sizeof(*target_stx));
+
+ __put_user(host_stx->stx_mask, &target_stx->stx_mask);
+ __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
+ __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
+ __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
+ __put_user(host_stx->stx_uid, &target_stx->stx_uid);
+ __put_user(host_stx->stx_gid, &target_stx->stx_gid);
+ __put_user(host_stx->stx_mode, &target_stx->stx_mode);
+ __put_user(host_stx->stx_ino, &target_stx->stx_ino);
+ __put_user(host_stx->stx_size, &target_stx->stx_size);
+ __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
+ __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
+ __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
+ __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
+ __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
+ __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
+ __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
+ __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
+ __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
+ __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
+ __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
+ __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
+ __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
+ __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
+
+ unlock_user_struct(target_stx, target_addr, 1);
+
+ return 0;
+}
+#endif
+
+static int do_sys_futex(int *uaddr, int op, int val,
+ const struct timespec *timeout, int *uaddr2,
+ int val3)
+{
+#if HOST_LONG_BITS == 64
+#if defined(__NR_futex)
+ /* always a 64-bit time_t, it doesn't define _time64 version */
+ return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
+
+#endif
+#else /* HOST_LONG_BITS == 64 */
+#if defined(__NR_futex_time64)
+ if (sizeof(timeout->tv_sec) == 8) {
+ /* _time64 function on 32bit arch */
+ return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
+ }
+#endif
+#if defined(__NR_futex)
+ /* old function on 32bit arch */
+ return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
+#endif
+#endif /* HOST_LONG_BITS == 64 */
+ g_assert_not_reached();
+}
+
+static int do_safe_futex(int *uaddr, int op, int val,
+ const struct timespec *timeout, int *uaddr2,
+ int val3)
+{
+#if HOST_LONG_BITS == 64
+#if defined(__NR_futex)
+ /* always a 64-bit time_t, it doesn't define _time64 version */
+ return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
+#endif
+#else /* HOST_LONG_BITS == 64 */
+#if defined(__NR_futex_time64)
+ if (sizeof(timeout->tv_sec) == 8) {
+ /* _time64 function on 32bit arch */
+ return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
+ val3));
+ }
+#endif
+#if defined(__NR_futex)
+ /* old function on 32bit arch */
+ return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
+#endif
+#endif /* HOST_LONG_BITS == 64 */
+ return -TARGET_ENOSYS;
+}
+
+/* ??? Using host futex calls even when target atomic operations
+ are not really atomic probably breaks things. However implementing
+ futexes locally would make futexes shared between multiple processes
+ tricky. However they're probably useless because guest atomic
+ operations won't work either. */
+#if defined(TARGET_NR_futex)
+static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val,
+ target_ulong timeout, target_ulong uaddr2, int val3)
+{
+ struct timespec ts, *pts;
+ int base_op;
+
+ /* ??? We assume FUTEX_* constants are the same on both host
+ and target. */
+#ifdef FUTEX_CMD_MASK
+ base_op = op & FUTEX_CMD_MASK;
+#else
+ base_op = op;
+#endif
+ switch (base_op) {
+ case FUTEX_WAIT:
+ case FUTEX_WAIT_BITSET:
+ if (timeout) {
+ pts = &ts;
+ target_to_host_timespec(pts, timeout);
+ } else {
+ pts = NULL;
+ }
+ return do_safe_futex(g2h(cpu, uaddr),
+ op, tswap32(val), pts, NULL, val3);
+ case FUTEX_WAKE:
+ return do_safe_futex(g2h(cpu, uaddr),
+ op, val, NULL, NULL, 0);
+ case FUTEX_FD:
+ return do_safe_futex(g2h(cpu, uaddr),
+ op, val, NULL, NULL, 0);
+ case FUTEX_REQUEUE:
+ case FUTEX_CMP_REQUEUE:
+ case FUTEX_WAKE_OP:
+ /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
+ TIMEOUT parameter is interpreted as a uint32_t by the kernel.
+ But the prototype takes a `struct timespec *'; insert casts
+ to satisfy the compiler. We do not need to tswap TIMEOUT
+ since it's not compared to guest memory. */
+ pts = (struct timespec *)(uintptr_t) timeout;
+ return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
+ (base_op == FUTEX_CMP_REQUEUE
+ ? tswap32(val3) : val3));
+ default:
+ return -TARGET_ENOSYS;
+ }
+}
+#endif
+
+#if defined(TARGET_NR_futex_time64)
+static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op,
+ int val, target_ulong timeout,
+ target_ulong uaddr2, int val3)
+{
+ struct timespec ts, *pts;
+ int base_op;
+
+ /* ??? We assume FUTEX_* constants are the same on both host
+ and target. */
+#ifdef FUTEX_CMD_MASK
+ base_op = op & FUTEX_CMD_MASK;
+#else
+ base_op = op;
+#endif
+ switch (base_op) {
+ case FUTEX_WAIT:
+ case FUTEX_WAIT_BITSET:
+ if (timeout) {
+ pts = &ts;
+ if (target_to_host_timespec64(pts, timeout)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ pts = NULL;
+ }
+ return do_safe_futex(g2h(cpu, uaddr), op,
+ tswap32(val), pts, NULL, val3);
+ case FUTEX_WAKE:
+ return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
+ case FUTEX_FD:
+ return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
+ case FUTEX_REQUEUE:
+ case FUTEX_CMP_REQUEUE:
+ case FUTEX_WAKE_OP:
+ /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
+ TIMEOUT parameter is interpreted as a uint32_t by the kernel.
+ But the prototype takes a `struct timespec *'; insert casts
+ to satisfy the compiler. We do not need to tswap TIMEOUT
+ since it's not compared to guest memory. */
+ pts = (struct timespec *)(uintptr_t) timeout;
+ return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
+ (base_op == FUTEX_CMP_REQUEUE
+ ? tswap32(val3) : val3));
+ default:
+ return -TARGET_ENOSYS;
+ }
+}
+#endif
+
+#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
+ abi_long handle, abi_long mount_id,
+ abi_long flags)
+{
+ struct file_handle *target_fh;
+ struct file_handle *fh;
+ int mid = 0;
+ abi_long ret;
+ char *name;
+ unsigned int size, total_size;
+
+ if (get_user_s32(size, handle)) {
+ return -TARGET_EFAULT;
+ }
+
+ name = lock_user_string(pathname);
+ if (!name) {
+ return -TARGET_EFAULT;
+ }
+
+ total_size = sizeof(struct file_handle) + size;
+ target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
+ if (!target_fh) {
+ unlock_user(name, pathname, 0);
+ return -TARGET_EFAULT;
+ }
+
+ fh = g_malloc0(total_size);
+ fh->handle_bytes = size;
+
+ ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
+ unlock_user(name, pathname, 0);
+
+ /* man name_to_handle_at(2):
+ * Other than the use of the handle_bytes field, the caller should treat
+ * the file_handle structure as an opaque data type
+ */
+
+ memcpy(target_fh, fh, total_size);
+ target_fh->handle_bytes = tswap32(fh->handle_bytes);
+ target_fh->handle_type = tswap32(fh->handle_type);
+ g_free(fh);
+ unlock_user(target_fh, handle, total_size);
+
+ if (put_user_s32(mid, mount_id)) {
+ return -TARGET_EFAULT;
+ }
+
+ return ret;
+
+}
+#endif
+
+#if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
+ abi_long flags)
+{
+ struct file_handle *target_fh;
+ struct file_handle *fh;
+ unsigned int size, total_size;
+ abi_long ret;
+
+ if (get_user_s32(size, handle)) {
+ return -TARGET_EFAULT;
+ }
+
+ total_size = sizeof(struct file_handle) + size;
+ target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
+ if (!target_fh) {
+ return -TARGET_EFAULT;
+ }
+
+ fh = g_memdup(target_fh, total_size);
+ fh->handle_bytes = size;
+ fh->handle_type = tswap32(target_fh->handle_type);
+
+ ret = get_errno(open_by_handle_at(mount_fd, fh,
+ target_to_host_bitmask(flags, fcntl_flags_tbl)));
+
+ g_free(fh);
+
+ unlock_user(target_fh, handle, total_size);
+
+ return ret;
+}
+#endif
+
+#if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
+
+static abi_long do_signalfd4(int fd, abi_long mask, int flags)
+{
+ int host_flags;
+ target_sigset_t *target_mask;
+ sigset_t host_mask;
+ abi_long ret;
+
+ if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ target_to_host_sigset(&host_mask, target_mask);
+
+ host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
+
+ ret = get_errno(signalfd(fd, &host_mask, host_flags));
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_signalfd_trans);
+ }
+
+ unlock_user_struct(target_mask, mask, 0);
+
+ return ret;
+}
+#endif
+
+/* Map host to target signal numbers for the wait family of syscalls.
+ Assume all other status bits are the same. */
+int host_to_target_waitstatus(int status)
+{
+ if (WIFSIGNALED(status)) {
+ return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
+ }
+ if (WIFSTOPPED(status)) {
+ return (host_to_target_signal(WSTOPSIG(status)) << 8)
+ | (status & 0xff);
+ }
+ return status;
+}
+
+static int open_self_cmdline(void *cpu_env, int fd)
+{
+ CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
+ struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
+ int i;
+
+ for (i = 0; i < bprm->argc; i++) {
+ size_t len = strlen(bprm->argv[i]) + 1;
+
+ if (write(fd, bprm->argv[i], len) != len) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int open_self_maps(void *cpu_env, int fd)
+{
+ CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ GSList *map_info = read_self_maps();
+ GSList *s;
+ int count;
+
+ for (s = map_info; s; s = g_slist_next(s)) {
+ MapInfo *e = (MapInfo *) s->data;
+
+ if (h2g_valid(e->start)) {
+ unsigned long min = e->start;
+ unsigned long max = e->end;
+ int flags = page_get_flags(h2g(min));
+ const char *path;
+
+ max = h2g_valid(max - 1) ?
+ max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1;
+
+ if (page_check_range(h2g(min), max - min, flags) == -1) {
+ continue;
+ }
+
+ if (h2g(min) == ts->info->stack_limit) {
+ path = "[stack]";
+ } else {
+ path = e->path;
+ }
+
+ count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
+ " %c%c%c%c %08" PRIx64 " %s %"PRId64,
+ h2g(min), h2g(max - 1) + 1,
+ e->is_read ? 'r' : '-',
+ e->is_write ? 'w' : '-',
+ e->is_exec ? 'x' : '-',
+ e->is_priv ? 'p' : '-',
+ (uint64_t) e->offset, e->dev, e->inode);
+ if (path) {
+ dprintf(fd, "%*s%s\n", 73 - count, "", path);
+ } else {
+ dprintf(fd, "\n");
+ }
+ }
+ }
+
+ free_self_maps(map_info);
+
+#ifdef TARGET_VSYSCALL_PAGE
+ /*
+ * We only support execution from the vsyscall page.
+ * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
+ */
+ count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
+ " --xp 00000000 00:00 0",
+ TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
+ dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
+#endif
+
+ return 0;
+}
+
+static int open_self_stat(void *cpu_env, int fd)
+{
+ CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ g_autoptr(GString) buf = g_string_new(NULL);
+ int i;
+
+ for (i = 0; i < 44; i++) {
+ if (i == 0) {
+ /* pid */
+ g_string_printf(buf, FMT_pid " ", getpid());
+ } else if (i == 1) {
+ /* app name */
+ gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
+ bin = bin ? bin + 1 : ts->bprm->argv[0];
+ g_string_printf(buf, "(%.15s) ", bin);
+ } else if (i == 27) {
+ /* stack bottom */
+ g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
+ } else {
+ /* for the rest, there is MasterCard */
+ g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
+ }
+
+ if (write(fd, buf->str, buf->len) != buf->len) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int open_self_auxv(void *cpu_env, int fd)
+{
+ CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
+ TaskState *ts = cpu->opaque;
+ abi_ulong auxv = ts->info->saved_auxv;
+ abi_ulong len = ts->info->auxv_len;
+ char *ptr;
+
+ /*
+ * Auxiliary vector is stored in target process stack.
+ * read in whole auxv vector and copy it to file
+ */
+ ptr = lock_user(VERIFY_READ, auxv, len, 0);
+ if (ptr != NULL) {
+ while (len > 0) {
+ ssize_t r;
+ r = write(fd, ptr, len);
+ if (r <= 0) {
+ break;
+ }
+ len -= r;
+ ptr += r;
+ }
+ lseek(fd, 0, SEEK_SET);
+ unlock_user(ptr, auxv, len);
+ }
+
+ return 0;
+}
+
+static int is_proc_myself(const char *filename, const char *entry)
+{
+ if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
+ filename += strlen("/proc/");
+ if (!strncmp(filename, "self/", strlen("self/"))) {
+ filename += strlen("self/");
+ } else if (*filename >= '1' && *filename <= '9') {
+ char myself[80];
+ snprintf(myself, sizeof(myself), "%d/", getpid());
+ if (!strncmp(filename, myself, strlen(myself))) {
+ filename += strlen(myself);
+ } else {
+ return 0;
+ }
+ } else {
+ return 0;
+ }
+ if (!strcmp(filename, entry)) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
+ defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
+static int is_proc(const char *filename, const char *entry)
+{
+ return strcmp(filename, entry) == 0;
+}
+#endif
+
+#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
+static int open_net_route(void *cpu_env, int fd)
+{
+ FILE *fp;
+ char *line = NULL;
+ size_t len = 0;
+ ssize_t read;
+
+ fp = fopen("/proc/net/route", "r");
+ if (fp == NULL) {
+ return -1;
+ }
+
+ /* read header */
+
+ read = getline(&line, &len, fp);
+ dprintf(fd, "%s", line);
+
+ /* read routes */
+
+ while ((read = getline(&line, &len, fp)) != -1) {
+ char iface[16];
+ uint32_t dest, gw, mask;
+ unsigned int flags, refcnt, use, metric, mtu, window, irtt;
+ int fields;
+
+ fields = sscanf(line,
+ "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
+ iface, &dest, &gw, &flags, &refcnt, &use, &metric,
+ &mask, &mtu, &window, &irtt);
+ if (fields != 11) {
+ continue;
+ }
+ dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
+ iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
+ metric, tswap32(mask), mtu, window, irtt);
+ }
+
+ free(line);
+ fclose(fp);
+
+ return 0;
+}
+#endif
+
+#if defined(TARGET_SPARC)
+static int open_cpuinfo(void *cpu_env, int fd)
+{
+ dprintf(fd, "type\t\t: sun4u\n");
+ return 0;
+}
+#endif
+
+#if defined(TARGET_HPPA)
+static int open_cpuinfo(void *cpu_env, int fd)
+{
+ dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
+ dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
+ dprintf(fd, "capabilities\t: os32\n");
+ dprintf(fd, "model\t\t: 9000/778/B160L\n");
+ dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
+ return 0;
+}
+#endif
+
+#if defined(TARGET_M68K)
+static int open_hardware(void *cpu_env, int fd)
+{
+ dprintf(fd, "Model:\t\tqemu-m68k\n");
+ return 0;
+}
+#endif
+
+static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
+{
+ struct fake_open {
+ const char *filename;
+ int (*fill)(void *cpu_env, int fd);
+ int (*cmp)(const char *s1, const char *s2);
+ };
+ const struct fake_open *fake_open;
+ static const struct fake_open fakes[] = {
+ { "maps", open_self_maps, is_proc_myself },
+ { "stat", open_self_stat, is_proc_myself },
+ { "auxv", open_self_auxv, is_proc_myself },
+ { "cmdline", open_self_cmdline, is_proc_myself },
+#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
+ { "/proc/net/route", open_net_route, is_proc },
+#endif
+#if defined(TARGET_SPARC) || defined(TARGET_HPPA)
+ { "/proc/cpuinfo", open_cpuinfo, is_proc },
+#endif
+#if defined(TARGET_M68K)
+ { "/proc/hardware", open_hardware, is_proc },
+#endif
+ { NULL, NULL, NULL }
+ };
+
+ if (is_proc_myself(pathname, "exe")) {
+ int execfd = qemu_getauxval(AT_EXECFD);
+ return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
+ }
+
+ for (fake_open = fakes; fake_open->filename; fake_open++) {
+ if (fake_open->cmp(pathname, fake_open->filename)) {
+ break;
+ }
+ }
+
+ if (fake_open->filename) {
+ const char *tmpdir;
+ char filename[PATH_MAX];
+ int fd, r;
+
+ /* create temporary file to map stat to */
+ tmpdir = getenv("TMPDIR");
+ if (!tmpdir)
+ tmpdir = "/tmp";
+ snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
+ fd = mkstemp(filename);
+ if (fd < 0) {
+ return fd;
+ }
+ unlink(filename);
+
+ if ((r = fake_open->fill(cpu_env, fd))) {
+ int e = errno;
+ close(fd);
+ errno = e;
+ return r;
+ }
+ lseek(fd, 0, SEEK_SET);
+
+ return fd;
+ }
+
+ return safe_openat(dirfd, path(pathname), flags, mode);
+}
+
+#define TIMER_MAGIC 0x0caf0000
+#define TIMER_MAGIC_MASK 0xffff0000
+
+/* Convert QEMU provided timer ID back to internal 16bit index format */
+static target_timer_t get_timer_id(abi_long arg)
+{
+ target_timer_t timerid = arg;
+
+ if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
+ return -TARGET_EINVAL;
+ }
+
+ timerid &= 0xffff;
+
+ if (timerid >= ARRAY_SIZE(g_posix_timers)) {
+ return -TARGET_EINVAL;
+ }
+
+ return timerid;
+}
+
+static int target_to_host_cpu_mask(unsigned long *host_mask,
+ size_t host_size,
+ abi_ulong target_addr,
+ size_t target_size)
+{
+ unsigned target_bits = sizeof(abi_ulong) * 8;
+ unsigned host_bits = sizeof(*host_mask) * 8;
+ abi_ulong *target_mask;
+ unsigned i, j;
+
+ assert(host_size >= target_size);
+
+ target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
+ if (!target_mask) {
+ return -TARGET_EFAULT;
+ }
+ memset(host_mask, 0, host_size);
+
+ for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
+ unsigned bit = i * target_bits;
+ abi_ulong val;
+
+ __get_user(val, &target_mask[i]);
+ for (j = 0; j < target_bits; j++, bit++) {
+ if (val & (1UL << j)) {
+ host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
+ }
+ }
+ }
+
+ unlock_user(target_mask, target_addr, 0);
+ return 0;
+}
+
+static int host_to_target_cpu_mask(const unsigned long *host_mask,
+ size_t host_size,
+ abi_ulong target_addr,
+ size_t target_size)
+{
+ unsigned target_bits = sizeof(abi_ulong) * 8;
+ unsigned host_bits = sizeof(*host_mask) * 8;
+ abi_ulong *target_mask;
+ unsigned i, j;
+
+ assert(host_size >= target_size);
+
+ target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
+ if (!target_mask) {
+ return -TARGET_EFAULT;
+ }
+
+ for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
+ unsigned bit = i * target_bits;
+ abi_ulong val = 0;
+
+ for (j = 0; j < target_bits; j++, bit++) {
+ if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
+ val |= 1UL << j;
+ }
+ }
+ __put_user(val, &target_mask[i]);
+ }
+
+ unlock_user(target_mask, target_addr, target_size);
+ return 0;
+}
+
+/* This is an internal helper for do_syscall so that it is easier
+ * to have a single return point, so that actions, such as logging
+ * of syscall results, can be performed.
+ * All errnos that do_syscall() returns must be -TARGET_<errcode>.
+ */
+static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4,
+ abi_long arg5, abi_long arg6, abi_long arg7,
+ abi_long arg8)
+{
+ CPUState *cpu = env_cpu(cpu_env);
+ abi_long ret;
+#if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
+ || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
+ || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
+ || defined(TARGET_NR_statx)
+ struct stat st;
+#endif
+#if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
+ || defined(TARGET_NR_fstatfs)
+ struct statfs stfs;
+#endif
+ void *p;
+
+ switch(num) {
+ case TARGET_NR_exit:
+ /* In old applications this may be used to implement _exit(2).
+ However in threaded applications it is used for thread termination,
+ and _exit_group is used for application termination.
+ Do thread termination if we have more then one thread. */
+
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+
+ pthread_mutex_lock(&clone_lock);
+
+ if (CPU_NEXT(first_cpu)) {
+ TaskState *ts = cpu->opaque;
+
+ object_property_set_bool(OBJECT(cpu), "realized", false, NULL);
+ object_unref(OBJECT(cpu));
+ /*
+ * At this point the CPU should be unrealized and removed
+ * from cpu lists. We can clean-up the rest of the thread
+ * data without the lock held.
+ */
+
+ pthread_mutex_unlock(&clone_lock);
+
+ if (ts->child_tidptr) {
+ put_user_u32(0, ts->child_tidptr);
+ do_sys_futex(g2h(cpu, ts->child_tidptr),
+ FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
+ }
+ thread_cpu = NULL;
+ g_free(ts);
+ rcu_unregister_thread();
+ pthread_exit(NULL);
+ }
+
+ pthread_mutex_unlock(&clone_lock);
+ preexit_cleanup(cpu_env, arg1);
+ _exit(arg1);
+ return 0; /* avoid warning */
+ case TARGET_NR_read:
+ if (arg2 == 0 && arg3 == 0) {
+ return get_errno(safe_read(arg1, 0, 0));
+ } else {
+ if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
+ return -TARGET_EFAULT;
+ ret = get_errno(safe_read(arg1, p, arg3));
+ if (ret >= 0 &&
+ fd_trans_host_to_target_data(arg1)) {
+ ret = fd_trans_host_to_target_data(arg1)(p, ret);
+ }
+ unlock_user(p, arg2, ret);
+ }
+ return ret;
+ case TARGET_NR_write:
+ if (arg2 == 0 && arg3 == 0) {
+ return get_errno(safe_write(arg1, 0, 0));
+ }
+ if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
+ return -TARGET_EFAULT;
+ if (fd_trans_target_to_host_data(arg1)) {
+ void *copy = g_malloc(arg3);
+ memcpy(copy, p, arg3);
+ ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
+ if (ret >= 0) {
+ ret = get_errno(safe_write(arg1, copy, ret));
+ }
+ g_free(copy);
+ } else {
+ ret = get_errno(safe_write(arg1, p, arg3));
+ }
+ unlock_user(p, arg2, 0);
+ return ret;
+
+#ifdef TARGET_NR_open
+ case TARGET_NR_open:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
+ target_to_host_bitmask(arg2, fcntl_flags_tbl),
+ arg3));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_openat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(do_openat(cpu_env, arg1, p,
+ target_to_host_bitmask(arg3, fcntl_flags_tbl),
+ arg4));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg2, 0);
+ return ret;
+#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+ case TARGET_NR_name_to_handle_at:
+ ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
+ return ret;
+#endif
+#if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+ case TARGET_NR_open_by_handle_at:
+ ret = do_open_by_handle_at(arg1, arg2, arg3);
+ fd_trans_unregister(ret);
+ return ret;
+#endif
+ case TARGET_NR_close:
+ fd_trans_unregister(arg1);
+ return get_errno(close(arg1));
+
+ case TARGET_NR_brk:
+ return do_brk(arg1);
+#ifdef TARGET_NR_fork
+ case TARGET_NR_fork:
+ return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
+#endif
+#ifdef TARGET_NR_waitpid
+ case TARGET_NR_waitpid:
+ {
+ int status;
+ ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
+ if (!is_error(ret) && arg2 && ret
+ && put_user_s32(host_to_target_waitstatus(status), arg2))
+ return -TARGET_EFAULT;
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_waitid
+ case TARGET_NR_waitid:
+ {
+ siginfo_t info;
+ info.si_pid = 0;
+ ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
+ if (!is_error(ret) && arg3 && info.si_pid != 0) {
+ if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
+ return -TARGET_EFAULT;
+ host_to_target_siginfo(p, &info);
+ unlock_user(p, arg3, sizeof(target_siginfo_t));
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_creat /* not on alpha */
+ case TARGET_NR_creat:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(creat(p, arg2));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_link
+ case TARGET_NR_link:
+ {
+ void * p2;
+ p = lock_user_string(arg1);
+ p2 = lock_user_string(arg2);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(link(p, p2));
+ unlock_user(p2, arg2, 0);
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_linkat)
+ case TARGET_NR_linkat:
+ {
+ void * p2 = NULL;
+ if (!arg2 || !arg4)
+ return -TARGET_EFAULT;
+ p = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
+ unlock_user(p, arg2, 0);
+ unlock_user(p2, arg4, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_unlink
+ case TARGET_NR_unlink:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(unlink(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#if defined(TARGET_NR_unlinkat)
+ case TARGET_NR_unlinkat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(unlinkat(arg1, p, arg3));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+ case TARGET_NR_execve:
+ {
+ char **argp, **envp;
+ int argc, envc;
+ abi_ulong gp;
+ abi_ulong guest_argp;
+ abi_ulong guest_envp;
+ abi_ulong addr;
+ char **q;
+ int total_size = 0;
+
+ argc = 0;
+ guest_argp = arg2;
+ for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
+ if (get_user_ual(addr, gp))
+ return -TARGET_EFAULT;
+ if (!addr)
+ break;
+ argc++;
+ }
+ envc = 0;
+ guest_envp = arg3;
+ for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
+ if (get_user_ual(addr, gp))
+ return -TARGET_EFAULT;
+ if (!addr)
+ break;
+ envc++;
+ }
+
+ argp = g_new0(char *, argc + 1);
+ envp = g_new0(char *, envc + 1);
+
+ for (gp = guest_argp, q = argp; gp;
+ gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp))
+ goto execve_efault;
+ if (!addr)
+ break;
+ if (!(*q = lock_user_string(addr)))
+ goto execve_efault;
+ total_size += strlen(*q) + 1;
+ }
+ *q = NULL;
+
+ for (gp = guest_envp, q = envp; gp;
+ gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp))
+ goto execve_efault;
+ if (!addr)
+ break;
+ if (!(*q = lock_user_string(addr)))
+ goto execve_efault;
+ total_size += strlen(*q) + 1;
+ }
+ *q = NULL;
+
+ if (!(p = lock_user_string(arg1)))
+ goto execve_efault;
+ /* Although execve() is not an interruptible syscall it is
+ * a special case where we must use the safe_syscall wrapper:
+ * if we allow a signal to happen before we make the host
+ * syscall then we will 'lose' it, because at the point of
+ * execve the process leaves QEMU's control. So we use the
+ * safe syscall wrapper to ensure that we either take the
+ * signal as a guest signal, or else it does not happen
+ * before the execve completes and makes it the other
+ * program's problem.
+ */
+ ret = get_errno(safe_execve(p, argp, envp));
+ unlock_user(p, arg1, 0);
+
+ goto execve_end;
+
+ execve_efault:
+ ret = -TARGET_EFAULT;
+
+ execve_end:
+ for (gp = guest_argp, q = argp; *q;
+ gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp)
+ || !addr)
+ break;
+ unlock_user(*q, addr, 0);
+ }
+ for (gp = guest_envp, q = envp; *q;
+ gp += sizeof(abi_ulong), q++) {
+ if (get_user_ual(addr, gp)
+ || !addr)
+ break;
+ unlock_user(*q, addr, 0);
+ }
+
+ g_free(argp);
+ g_free(envp);
+ }
+ return ret;
+ case TARGET_NR_chdir:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(chdir(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#ifdef TARGET_NR_time
+ case TARGET_NR_time:
+ {
+ time_t host_time;
+ ret = get_errno(time(&host_time));
+ if (!is_error(ret)
+ && arg1
+ && put_user_sal(host_time, arg1))
+ return -TARGET_EFAULT;
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_mknod
+ case TARGET_NR_mknod:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(mknod(p, arg2, arg3));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#if defined(TARGET_NR_mknodat)
+ case TARGET_NR_mknodat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(mknodat(arg1, p, arg3, arg4));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_chmod
+ case TARGET_NR_chmod:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(chmod(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_lseek
+ case TARGET_NR_lseek:
+ return get_errno(lseek(arg1, arg2, arg3));
+#endif
+#if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
+ /* Alpha specific */
+ case TARGET_NR_getxpid:
+ ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
+ return get_errno(getpid());
+#endif
+#ifdef TARGET_NR_getpid
+ case TARGET_NR_getpid:
+ return get_errno(getpid());
+#endif
+ case TARGET_NR_mount:
+ {
+ /* need to look at the data field */
+ void *p2, *p3;
+
+ if (arg1) {
+ p = lock_user_string(arg1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ p = NULL;
+ }
+
+ p2 = lock_user_string(arg2);
+ if (!p2) {
+ if (arg1) {
+ unlock_user(p, arg1, 0);
+ }
+ return -TARGET_EFAULT;
+ }
+
+ if (arg3) {
+ p3 = lock_user_string(arg3);
+ if (!p3) {
+ if (arg1) {
+ unlock_user(p, arg1, 0);
+ }
+ unlock_user(p2, arg2, 0);
+ return -TARGET_EFAULT;
+ }
+ } else {
+ p3 = NULL;
+ }
+
+ /* FIXME - arg5 should be locked, but it isn't clear how to
+ * do that since it's not guaranteed to be a NULL-terminated
+ * string.
+ */
+ if (!arg5) {
+ ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
+ } else {
+ ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5));
+ }
+ ret = get_errno(ret);
+
+ if (arg1) {
+ unlock_user(p, arg1, 0);
+ }
+ unlock_user(p2, arg2, 0);
+ if (arg3) {
+ unlock_user(p3, arg3, 0);
+ }
+ }
+ return ret;
+#if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount)
+#if defined(TARGET_NR_umount)
+ case TARGET_NR_umount:
+#endif
+#if defined(TARGET_NR_oldumount)
+ case TARGET_NR_oldumount:
+#endif
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(umount(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_stime /* not on alpha */
+ case TARGET_NR_stime:
+ {
+ struct timespec ts;
+ ts.tv_nsec = 0;
+ if (get_user_sal(ts.tv_sec, arg1)) {
+ return -TARGET_EFAULT;
+ }
+ return get_errno(clock_settime(CLOCK_REALTIME, &ts));
+ }
+#endif
+#ifdef TARGET_NR_alarm /* not on alpha */
+ case TARGET_NR_alarm:
+ return alarm(arg1);
+#endif
+#ifdef TARGET_NR_pause /* not on alpha */
+ case TARGET_NR_pause:
+ if (!block_signals()) {
+ sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
+ }
+ return -TARGET_EINTR;
+#endif
+#ifdef TARGET_NR_utime
+ case TARGET_NR_utime:
+ {
+ struct utimbuf tbuf, *host_tbuf;
+ struct target_utimbuf *target_tbuf;
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
+ return -TARGET_EFAULT;
+ tbuf.actime = tswapal(target_tbuf->actime);
+ tbuf.modtime = tswapal(target_tbuf->modtime);
+ unlock_user_struct(target_tbuf, arg2, 0);
+ host_tbuf = &tbuf;
+ } else {
+ host_tbuf = NULL;
+ }
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(utime(p, host_tbuf));
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_utimes
+ case TARGET_NR_utimes:
+ {
+ struct timeval *tvp, tv[2];
+ if (arg2) {
+ if (copy_from_user_timeval(&tv[0], arg2)
+ || copy_from_user_timeval(&tv[1],
+ arg2 + sizeof(struct target_timeval)))
+ return -TARGET_EFAULT;
+ tvp = tv;
+ } else {
+ tvp = NULL;
+ }
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(utimes(p, tvp));
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_futimesat)
+ case TARGET_NR_futimesat:
+ {
+ struct timeval *tvp, tv[2];
+ if (arg3) {
+ if (copy_from_user_timeval(&tv[0], arg3)
+ || copy_from_user_timeval(&tv[1],
+ arg3 + sizeof(struct target_timeval)))
+ return -TARGET_EFAULT;
+ tvp = tv;
+ } else {
+ tvp = NULL;
+ }
+ if (!(p = lock_user_string(arg2))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(futimesat(arg1, path(p), tvp));
+ unlock_user(p, arg2, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_access
+ case TARGET_NR_access:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(access(path(p), arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
+ case TARGET_NR_faccessat:
+ if (!(p = lock_user_string(arg2))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(faccessat(arg1, p, arg3, 0));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_nice /* not on alpha */
+ case TARGET_NR_nice:
+ return get_errno(nice(arg1));
+#endif
+ case TARGET_NR_sync:
+ sync();
+ return 0;
+#if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
+ case TARGET_NR_syncfs:
+ return get_errno(syncfs(arg1));
+#endif
+ case TARGET_NR_kill:
+ return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
+#ifdef TARGET_NR_rename
+ case TARGET_NR_rename:
+ {
+ void *p2;
+ p = lock_user_string(arg1);
+ p2 = lock_user_string(arg2);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(rename(p, p2));
+ unlock_user(p2, arg2, 0);
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_renameat)
+ case TARGET_NR_renameat:
+ {
+ void *p2;
+ p = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(renameat(arg1, p, arg3, p2));
+ unlock_user(p2, arg4, 0);
+ unlock_user(p, arg2, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_renameat2)
+ case TARGET_NR_renameat2:
+ {
+ void *p2;
+ p = lock_user_string(arg2);
+ p2 = lock_user_string(arg4);
+ if (!p || !p2) {
+ ret = -TARGET_EFAULT;
+ } else {
+ ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
+ }
+ unlock_user(p2, arg4, 0);
+ unlock_user(p, arg2, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_mkdir
+ case TARGET_NR_mkdir:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(mkdir(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#if defined(TARGET_NR_mkdirat)
+ case TARGET_NR_mkdirat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(mkdirat(arg1, p, arg3));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_rmdir
+ case TARGET_NR_rmdir:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(rmdir(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_dup:
+ ret = get_errno(dup(arg1));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, ret);
+ }
+ return ret;
+#ifdef TARGET_NR_pipe
+ case TARGET_NR_pipe:
+ return do_pipe(cpu_env, arg1, 0, 0);
+#endif
+#ifdef TARGET_NR_pipe2
+ case TARGET_NR_pipe2:
+ return do_pipe(cpu_env, arg1,
+ target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
+#endif
+ case TARGET_NR_times:
+ {
+ struct target_tms *tmsp;
+ struct tms tms;
+ ret = get_errno(times(&tms));
+ if (arg1) {
+ tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
+ if (!tmsp)
+ return -TARGET_EFAULT;
+ tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
+ tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
+ tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
+ tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
+ }
+ if (!is_error(ret))
+ ret = host_to_target_clock_t(ret);
+ }
+ return ret;
+ case TARGET_NR_acct:
+ if (arg1 == 0) {
+ ret = get_errno(acct(NULL));
+ } else {
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(acct(path(p)));
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#ifdef TARGET_NR_umount2
+ case TARGET_NR_umount2:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(umount2(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_ioctl:
+ return do_ioctl(arg1, arg2, arg3);
+#ifdef TARGET_NR_fcntl
+ case TARGET_NR_fcntl:
+ return do_fcntl(arg1, arg2, arg3);
+#endif
+ case TARGET_NR_setpgid:
+ return get_errno(setpgid(arg1, arg2));
+ case TARGET_NR_umask:
+ return get_errno(umask(arg1));
+ case TARGET_NR_chroot:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(chroot(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#ifdef TARGET_NR_dup2
+ case TARGET_NR_dup2:
+ ret = get_errno(dup2(arg1, arg2));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, arg2);
+ }
+ return ret;
+#endif
+#if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
+ case TARGET_NR_dup3:
+ {
+ int host_flags;
+
+ if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
+ return -EINVAL;
+ }
+ host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
+ ret = get_errno(dup3(arg1, arg2, host_flags));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, arg2);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_getppid /* not on alpha */
+ case TARGET_NR_getppid:
+ return get_errno(getppid());
+#endif
+#ifdef TARGET_NR_getpgrp
+ case TARGET_NR_getpgrp:
+ return get_errno(getpgrp());
+#endif
+ case TARGET_NR_setsid:
+ return get_errno(setsid());
+#ifdef TARGET_NR_sigaction
+ case TARGET_NR_sigaction:
+ {
+#if defined(TARGET_ALPHA)
+ struct target_sigaction act, oact, *pact = 0;
+ struct target_old_sigaction *old_act;
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
+ return -TARGET_EFAULT;
+ act._sa_handler = old_act->_sa_handler;
+ target_siginitset(&act.sa_mask, old_act->sa_mask);
+ act.sa_flags = old_act->sa_flags;
+ act.sa_restorer = 0;
+ unlock_user_struct(old_act, arg2, 0);
+ pact = &act;
+ }
+ ret = get_errno(do_sigaction(arg1, pact, &oact));
+ if (!is_error(ret) && arg3) {
+ if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
+ return -TARGET_EFAULT;
+ old_act->_sa_handler = oact._sa_handler;
+ old_act->sa_mask = oact.sa_mask.sig[0];
+ old_act->sa_flags = oact.sa_flags;
+ unlock_user_struct(old_act, arg3, 1);
+ }
+#elif defined(TARGET_MIPS)
+ struct target_sigaction act, oact, *pact, *old_act;
+
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
+ return -TARGET_EFAULT;
+ act._sa_handler = old_act->_sa_handler;
+ target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
+ act.sa_flags = old_act->sa_flags;
+ unlock_user_struct(old_act, arg2, 0);
+ pact = &act;
+ } else {
+ pact = NULL;
+ }
+
+ ret = get_errno(do_sigaction(arg1, pact, &oact));
+
+ if (!is_error(ret) && arg3) {
+ if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
+ return -TARGET_EFAULT;
+ old_act->_sa_handler = oact._sa_handler;
+ old_act->sa_flags = oact.sa_flags;
+ old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
+ old_act->sa_mask.sig[1] = 0;
+ old_act->sa_mask.sig[2] = 0;
+ old_act->sa_mask.sig[3] = 0;
+ unlock_user_struct(old_act, arg3, 1);
+ }
+#else
+ struct target_old_sigaction *old_act;
+ struct target_sigaction act, oact, *pact;
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
+ return -TARGET_EFAULT;
+ act._sa_handler = old_act->_sa_handler;
+ target_siginitset(&act.sa_mask, old_act->sa_mask);
+ act.sa_flags = old_act->sa_flags;
+ act.sa_restorer = old_act->sa_restorer;
+#ifdef TARGET_ARCH_HAS_KA_RESTORER
+ act.ka_restorer = 0;
+#endif
+ unlock_user_struct(old_act, arg2, 0);
+ pact = &act;
+ } else {
+ pact = NULL;
+ }
+ ret = get_errno(do_sigaction(arg1, pact, &oact));
+ if (!is_error(ret) && arg3) {
+ if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
+ return -TARGET_EFAULT;
+ old_act->_sa_handler = oact._sa_handler;
+ old_act->sa_mask = oact.sa_mask.sig[0];
+ old_act->sa_flags = oact.sa_flags;
+ old_act->sa_restorer = oact.sa_restorer;
+ unlock_user_struct(old_act, arg3, 1);
+ }
+#endif
+ }
+ return ret;
+#endif
+ case TARGET_NR_rt_sigaction:
+ {
+#if defined(TARGET_ALPHA)
+ /* For Alpha and SPARC this is a 5 argument syscall, with
+ * a 'restorer' parameter which must be copied into the
+ * sa_restorer field of the sigaction struct.
+ * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
+ * and arg5 is the sigsetsize.
+ * Alpha also has a separate rt_sigaction struct that it uses
+ * here; SPARC uses the usual sigaction struct.
+ */
+ struct target_rt_sigaction *rt_act;
+ struct target_sigaction act, oact, *pact = 0;
+
+ if (arg4 != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
+ return -TARGET_EFAULT;
+ act._sa_handler = rt_act->_sa_handler;
+ act.sa_mask = rt_act->sa_mask;
+ act.sa_flags = rt_act->sa_flags;
+ act.sa_restorer = arg5;
+ unlock_user_struct(rt_act, arg2, 0);
+ pact = &act;
+ }
+ ret = get_errno(do_sigaction(arg1, pact, &oact));
+ if (!is_error(ret) && arg3) {
+ if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
+ return -TARGET_EFAULT;
+ rt_act->_sa_handler = oact._sa_handler;
+ rt_act->sa_mask = oact.sa_mask;
+ rt_act->sa_flags = oact.sa_flags;
+ unlock_user_struct(rt_act, arg3, 1);
+ }
+#else
+#ifdef TARGET_SPARC
+ target_ulong restorer = arg4;
+ target_ulong sigsetsize = arg5;
+#else
+ target_ulong sigsetsize = arg4;
+#endif
+ struct target_sigaction *act;
+ struct target_sigaction *oact;
+
+ if (sigsetsize != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+ if (arg2) {
+ if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
+ return -TARGET_EFAULT;
+ }
+#ifdef TARGET_ARCH_HAS_KA_RESTORER
+ act->ka_restorer = restorer;
+#endif
+ } else {
+ act = NULL;
+ }
+ if (arg3) {
+ if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
+ ret = -TARGET_EFAULT;
+ goto rt_sigaction_fail;
+ }
+ } else
+ oact = NULL;
+ ret = get_errno(do_sigaction(arg1, act, oact));
+ rt_sigaction_fail:
+ if (act)
+ unlock_user_struct(act, arg2, 0);
+ if (oact)
+ unlock_user_struct(oact, arg3, 1);
+#endif
+ }
+ return ret;
+#ifdef TARGET_NR_sgetmask /* not on alpha */
+ case TARGET_NR_sgetmask:
+ {
+ sigset_t cur_set;
+ abi_ulong target_set;
+ ret = do_sigprocmask(0, NULL, &cur_set);
+ if (!ret) {
+ host_to_target_old_sigset(&target_set, &cur_set);
+ ret = target_set;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_ssetmask /* not on alpha */
+ case TARGET_NR_ssetmask:
+ {
+ sigset_t set, oset;
+ abi_ulong target_set = arg1;
+ target_to_host_old_sigset(&set, &target_set);
+ ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
+ if (!ret) {
+ host_to_target_old_sigset(&target_set, &oset);
+ ret = target_set;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_sigprocmask
+ case TARGET_NR_sigprocmask:
+ {
+#if defined(TARGET_ALPHA)
+ sigset_t set, oldset;
+ abi_ulong mask;
+ int how;
+
+ switch (arg1) {
+ case TARGET_SIG_BLOCK:
+ how = SIG_BLOCK;
+ break;
+ case TARGET_SIG_UNBLOCK:
+ how = SIG_UNBLOCK;
+ break;
+ case TARGET_SIG_SETMASK:
+ how = SIG_SETMASK;
+ break;
+ default:
+ return -TARGET_EINVAL;
+ }
+ mask = arg2;
+ target_to_host_old_sigset(&set, &mask);
+
+ ret = do_sigprocmask(how, &set, &oldset);
+ if (!is_error(ret)) {
+ host_to_target_old_sigset(&mask, &oldset);
+ ret = mask;
+ ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
+ }
+#else
+ sigset_t set, oldset, *set_ptr;
+ int how;
+
+ if (arg2) {
+ switch (arg1) {
+ case TARGET_SIG_BLOCK:
+ how = SIG_BLOCK;
+ break;
+ case TARGET_SIG_UNBLOCK:
+ how = SIG_UNBLOCK;
+ break;
+ case TARGET_SIG_SETMASK:
+ how = SIG_SETMASK;
+ break;
+ default:
+ return -TARGET_EINVAL;
+ }
+ if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
+ return -TARGET_EFAULT;
+ target_to_host_old_sigset(&set, p);
+ unlock_user(p, arg2, 0);
+ set_ptr = &set;
+ } else {
+ how = 0;
+ set_ptr = NULL;
+ }
+ ret = do_sigprocmask(how, set_ptr, &oldset);
+ if (!is_error(ret) && arg3) {
+ if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
+ return -TARGET_EFAULT;
+ host_to_target_old_sigset(p, &oldset);
+ unlock_user(p, arg3, sizeof(target_sigset_t));
+ }
+#endif
+ }
+ return ret;
+#endif
+ case TARGET_NR_rt_sigprocmask:
+ {
+ int how = arg1;
+ sigset_t set, oldset, *set_ptr;
+
+ if (arg4 != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (arg2) {
+ switch(how) {
+ case TARGET_SIG_BLOCK:
+ how = SIG_BLOCK;
+ break;
+ case TARGET_SIG_UNBLOCK:
+ how = SIG_UNBLOCK;
+ break;
+ case TARGET_SIG_SETMASK:
+ how = SIG_SETMASK;
+ break;
+ default:
+ return -TARGET_EINVAL;
+ }
+ if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
+ return -TARGET_EFAULT;
+ target_to_host_sigset(&set, p);
+ unlock_user(p, arg2, 0);
+ set_ptr = &set;
+ } else {
+ how = 0;
+ set_ptr = NULL;
+ }
+ ret = do_sigprocmask(how, set_ptr, &oldset);
+ if (!is_error(ret) && arg3) {
+ if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
+ return -TARGET_EFAULT;
+ host_to_target_sigset(p, &oldset);
+ unlock_user(p, arg3, sizeof(target_sigset_t));
+ }
+ }
+ return ret;
+#ifdef TARGET_NR_sigpending
+ case TARGET_NR_sigpending:
+ {
+ sigset_t set;
+ ret = get_errno(sigpending(&set));
+ if (!is_error(ret)) {
+ if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
+ return -TARGET_EFAULT;
+ host_to_target_old_sigset(p, &set);
+ unlock_user(p, arg1, sizeof(target_sigset_t));
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_rt_sigpending:
+ {
+ sigset_t set;
+
+ /* Yes, this check is >, not != like most. We follow the kernel's
+ * logic and it does it like this because it implements
+ * NR_sigpending through the same code path, and in that case
+ * the old_sigset_t is smaller in size.
+ */
+ if (arg2 > sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+
+ ret = get_errno(sigpending(&set));
+ if (!is_error(ret)) {
+ if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
+ return -TARGET_EFAULT;
+ host_to_target_sigset(p, &set);
+ unlock_user(p, arg1, sizeof(target_sigset_t));
+ }
+ }
+ return ret;
+#ifdef TARGET_NR_sigsuspend
+ case TARGET_NR_sigsuspend:
+ {
+ TaskState *ts = cpu->opaque;
+#if defined(TARGET_ALPHA)
+ abi_ulong mask = arg1;
+ target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
+#else
+ if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
+ return -TARGET_EFAULT;
+ target_to_host_old_sigset(&ts->sigsuspend_mask, p);
+ unlock_user(p, arg1, 0);
+#endif
+ ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
+ SIGSET_T_SIZE));
+ if (ret != -TARGET_ERESTARTSYS) {
+ ts->in_sigsuspend = 1;
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_rt_sigsuspend:
+ {
+ TaskState *ts = cpu->opaque;
+
+ if (arg2 != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+ if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
+ return -TARGET_EFAULT;
+ target_to_host_sigset(&ts->sigsuspend_mask, p);
+ unlock_user(p, arg1, 0);
+ ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
+ SIGSET_T_SIZE));
+ if (ret != -TARGET_ERESTARTSYS) {
+ ts->in_sigsuspend = 1;
+ }
+ }
+ return ret;
+#ifdef TARGET_NR_rt_sigtimedwait
+ case TARGET_NR_rt_sigtimedwait:
+ {
+ sigset_t set;
+ struct timespec uts, *puts;
+ siginfo_t uinfo;
+
+ if (arg4 != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
+ return -TARGET_EFAULT;
+ target_to_host_sigset(&set, p);
+ unlock_user(p, arg1, 0);
+ if (arg3) {
+ puts = &uts;
+ if (target_to_host_timespec(puts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ puts = NULL;
+ }
+ ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
+ SIGSET_T_SIZE));
+ if (!is_error(ret)) {
+ if (arg2) {
+ p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
+ 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ host_to_target_siginfo(p, &uinfo);
+ unlock_user(p, arg2, sizeof(target_siginfo_t));
+ }
+ ret = host_to_target_signal(ret);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_rt_sigtimedwait_time64
+ case TARGET_NR_rt_sigtimedwait_time64:
+ {
+ sigset_t set;
+ struct timespec uts, *puts;
+ siginfo_t uinfo;
+
+ if (arg4 != sizeof(target_sigset_t)) {
+ return -TARGET_EINVAL;
+ }
+
+ p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_sigset(&set, p);
+ unlock_user(p, arg1, 0);
+ if (arg3) {
+ puts = &uts;
+ if (target_to_host_timespec64(puts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ puts = NULL;
+ }
+ ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
+ SIGSET_T_SIZE));
+ if (!is_error(ret)) {
+ if (arg2) {
+ p = lock_user(VERIFY_WRITE, arg2,
+ sizeof(target_siginfo_t), 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ host_to_target_siginfo(p, &uinfo);
+ unlock_user(p, arg2, sizeof(target_siginfo_t));
+ }
+ ret = host_to_target_signal(ret);
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_rt_sigqueueinfo:
+ {
+ siginfo_t uinfo;
+
+ p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_siginfo(&uinfo, p);
+ unlock_user(p, arg3, 0);
+ ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
+ }
+ return ret;
+ case TARGET_NR_rt_tgsigqueueinfo:
+ {
+ siginfo_t uinfo;
+
+ p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ target_to_host_siginfo(&uinfo, p);
+ unlock_user(p, arg4, 0);
+ ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
+ }
+ return ret;
+#ifdef TARGET_NR_sigreturn
+ case TARGET_NR_sigreturn:
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+ return do_sigreturn(cpu_env);
+#endif
+ case TARGET_NR_rt_sigreturn:
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+ return do_rt_sigreturn(cpu_env);
+ case TARGET_NR_sethostname:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(sethostname(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#ifdef TARGET_NR_setrlimit
+ case TARGET_NR_setrlimit:
+ {
+ int resource = target_to_host_resource(arg1);
+ struct target_rlimit *target_rlim;
+ struct rlimit rlim;
+ if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
+ return -TARGET_EFAULT;
+ rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
+ rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
+ unlock_user_struct(target_rlim, arg2, 0);
+ /*
+ * If we just passed through resource limit settings for memory then
+ * they would also apply to QEMU's own allocations, and QEMU will
+ * crash or hang or die if its allocations fail. Ideally we would
+ * track the guest allocations in QEMU and apply the limits ourselves.
+ * For now, just tell the guest the call succeeded but don't actually
+ * limit anything.
+ */
+ if (resource != RLIMIT_AS &&
+ resource != RLIMIT_DATA &&
+ resource != RLIMIT_STACK) {
+ return get_errno(setrlimit(resource, &rlim));
+ } else {
+ return 0;
+ }
+ }
+#endif
+#ifdef TARGET_NR_getrlimit
+ case TARGET_NR_getrlimit:
+ {
+ int resource = target_to_host_resource(arg1);
+ struct target_rlimit *target_rlim;
+ struct rlimit rlim;
+
+ ret = get_errno(getrlimit(resource, &rlim));
+ if (!is_error(ret)) {
+ if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
+ return -TARGET_EFAULT;
+ target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
+ target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
+ unlock_user_struct(target_rlim, arg2, 1);
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_getrusage:
+ {
+ struct rusage rusage;
+ ret = get_errno(getrusage(arg1, &rusage));
+ if (!is_error(ret)) {
+ ret = host_to_target_rusage(arg2, &rusage);
+ }
+ }
+ return ret;
+#if defined(TARGET_NR_gettimeofday)
+ case TARGET_NR_gettimeofday:
+ {
+ struct timeval tv;
+ struct timezone tz;
+
+ ret = get_errno(gettimeofday(&tv, &tz));
+ if (!is_error(ret)) {
+ if (arg1 && copy_to_user_timeval(arg1, &tv)) {
+ return -TARGET_EFAULT;
+ }
+ if (arg2 && copy_to_user_timezone(arg2, &tz)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_settimeofday)
+ case TARGET_NR_settimeofday:
+ {
+ struct timeval tv, *ptv = NULL;
+ struct timezone tz, *ptz = NULL;
+
+ if (arg1) {
+ if (copy_from_user_timeval(&tv, arg1)) {
+ return -TARGET_EFAULT;
+ }
+ ptv = &tv;
+ }
+
+ if (arg2) {
+ if (copy_from_user_timezone(&tz, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ ptz = &tz;
+ }
+
+ return get_errno(settimeofday(ptv, ptz));
+ }
+#endif
+#if defined(TARGET_NR_select)
+ case TARGET_NR_select:
+#if defined(TARGET_WANT_NI_OLD_SELECT)
+ /* some architectures used to have old_select here
+ * but now ENOSYS it.
+ */
+ ret = -TARGET_ENOSYS;
+#elif defined(TARGET_WANT_OLD_SYS_SELECT)
+ ret = do_old_select(arg1);
+#else
+ ret = do_select(arg1, arg2, arg3, arg4, arg5);
+#endif
+ return ret;
+#endif
+#ifdef TARGET_NR_pselect6
+ case TARGET_NR_pselect6:
+ return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false);
+#endif
+#ifdef TARGET_NR_pselect6_time64
+ case TARGET_NR_pselect6_time64:
+ return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true);
+#endif
+#ifdef TARGET_NR_symlink
+ case TARGET_NR_symlink:
+ {
+ void *p2;
+ p = lock_user_string(arg1);
+ p2 = lock_user_string(arg2);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(symlink(p, p2));
+ unlock_user(p2, arg2, 0);
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_symlinkat)
+ case TARGET_NR_symlinkat:
+ {
+ void *p2;
+ p = lock_user_string(arg1);
+ p2 = lock_user_string(arg3);
+ if (!p || !p2)
+ ret = -TARGET_EFAULT;
+ else
+ ret = get_errno(symlinkat(p, arg2, p2));
+ unlock_user(p2, arg3, 0);
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_readlink
+ case TARGET_NR_readlink:
+ {
+ void *p2;
+ p = lock_user_string(arg1);
+ p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!p || !p2) {
+ ret = -TARGET_EFAULT;
+ } else if (!arg3) {
+ /* Short circuit this for the magic exe check. */
+ ret = -TARGET_EINVAL;
+ } else if (is_proc_myself((const char *)p, "exe")) {
+ char real[PATH_MAX], *temp;
+ temp = realpath(exec_path, real);
+ /* Return value is # of bytes that we wrote to the buffer. */
+ if (temp == NULL) {
+ ret = get_errno(-1);
+ } else {
+ /* Don't worry about sign mismatch as earlier mapping
+ * logic would have thrown a bad address error. */
+ ret = MIN(strlen(real), arg3);
+ /* We cannot NUL terminate the string. */
+ memcpy(p2, real, ret);
+ }
+ } else {
+ ret = get_errno(readlink(path(p), p2, arg3));
+ }
+ unlock_user(p2, arg2, ret);
+ unlock_user(p, arg1, 0);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_readlinkat)
+ case TARGET_NR_readlinkat:
+ {
+ void *p2;
+ p = lock_user_string(arg2);
+ p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+ if (!p || !p2) {
+ ret = -TARGET_EFAULT;
+ } else if (is_proc_myself((const char *)p, "exe")) {
+ char real[PATH_MAX], *temp;
+ temp = realpath(exec_path, real);
+ ret = temp == NULL ? get_errno(-1) : strlen(real) ;
+ snprintf((char *)p2, arg4, "%s", real);
+ } else {
+ ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
+ }
+ unlock_user(p2, arg3, ret);
+ unlock_user(p, arg2, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_swapon
+ case TARGET_NR_swapon:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(swapon(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_reboot:
+ if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
+ /* arg4 must be ignored in all other cases */
+ p = lock_user_string(arg4);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(reboot(arg1, arg2, arg3, p));
+ unlock_user(p, arg4, 0);
+ } else {
+ ret = get_errno(reboot(arg1, arg2, arg3, NULL));
+ }
+ return ret;
+#ifdef TARGET_NR_mmap
+ case TARGET_NR_mmap:
+#if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
+ (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
+ defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
+ || defined(TARGET_S390X)
+ {
+ abi_ulong *v;
+ abi_ulong v1, v2, v3, v4, v5, v6;
+ if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
+ return -TARGET_EFAULT;
+ v1 = tswapal(v[0]);
+ v2 = tswapal(v[1]);
+ v3 = tswapal(v[2]);
+ v4 = tswapal(v[3]);
+ v5 = tswapal(v[4]);
+ v6 = tswapal(v[5]);
+ unlock_user(v, arg1, 0);
+ ret = get_errno(target_mmap(v1, v2, v3,
+ target_to_host_bitmask(v4, mmap_flags_tbl),
+ v5, v6));
+ }
+#else
+ /* mmap pointers are always untagged */
+ ret = get_errno(target_mmap(arg1, arg2, arg3,
+ target_to_host_bitmask(arg4, mmap_flags_tbl),
+ arg5,
+ arg6));
+#endif
+ return ret;
+#endif
+#ifdef TARGET_NR_mmap2
+ case TARGET_NR_mmap2:
+#ifndef MMAP_SHIFT
+#define MMAP_SHIFT 12
+#endif
+ ret = target_mmap(arg1, arg2, arg3,
+ target_to_host_bitmask(arg4, mmap_flags_tbl),
+ arg5, arg6 << MMAP_SHIFT);
+ return get_errno(ret);
+#endif
+ case TARGET_NR_munmap:
+ arg1 = cpu_untagged_addr(cpu, arg1);
+ return get_errno(target_munmap(arg1, arg2));
+ case TARGET_NR_mprotect:
+ arg1 = cpu_untagged_addr(cpu, arg1);
+ {
+ TaskState *ts = cpu->opaque;
+ /* Special hack to detect libc making the stack executable. */
+ if ((arg3 & PROT_GROWSDOWN)
+ && arg1 >= ts->info->stack_limit
+ && arg1 <= ts->info->start_stack) {
+ arg3 &= ~PROT_GROWSDOWN;
+ arg2 = arg2 + arg1 - ts->info->stack_limit;
+ arg1 = ts->info->stack_limit;
+ }
+ }
+ return get_errno(target_mprotect(arg1, arg2, arg3));
+#ifdef TARGET_NR_mremap
+ case TARGET_NR_mremap:
+ arg1 = cpu_untagged_addr(cpu, arg1);
+ /* mremap new_addr (arg5) is always untagged */
+ return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
+#endif
+ /* ??? msync/mlock/munlock are broken for softmmu. */
+#ifdef TARGET_NR_msync
+ case TARGET_NR_msync:
+ return get_errno(msync(g2h(cpu, arg1), arg2, arg3));
+#endif
+#ifdef TARGET_NR_mlock
+ case TARGET_NR_mlock:
+ return get_errno(mlock(g2h(cpu, arg1), arg2));
+#endif
+#ifdef TARGET_NR_munlock
+ case TARGET_NR_munlock:
+ return get_errno(munlock(g2h(cpu, arg1), arg2));
+#endif
+#ifdef TARGET_NR_mlockall
+ case TARGET_NR_mlockall:
+ return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
+#endif
+#ifdef TARGET_NR_munlockall
+ case TARGET_NR_munlockall:
+ return get_errno(munlockall());
+#endif
+#ifdef TARGET_NR_truncate
+ case TARGET_NR_truncate:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(truncate(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_ftruncate
+ case TARGET_NR_ftruncate:
+ return get_errno(ftruncate(arg1, arg2));
+#endif
+ case TARGET_NR_fchmod:
+ return get_errno(fchmod(arg1, arg2));
+#if defined(TARGET_NR_fchmodat)
+ case TARGET_NR_fchmodat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(fchmodat(arg1, p, arg3, 0));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+ case TARGET_NR_getpriority:
+ /* Note that negative values are valid for getpriority, so we must
+ differentiate based on errno settings. */
+ errno = 0;
+ ret = getpriority(arg1, arg2);
+ if (ret == -1 && errno != 0) {
+ return -host_to_target_errno(errno);
+ }
+#ifdef TARGET_ALPHA
+ /* Return value is the unbiased priority. Signal no error. */
+ ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
+#else
+ /* Return value is a biased priority to avoid negative numbers. */
+ ret = 20 - ret;
+#endif
+ return ret;
+ case TARGET_NR_setpriority:
+ return get_errno(setpriority(arg1, arg2, arg3));
+#ifdef TARGET_NR_statfs
+ case TARGET_NR_statfs:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(statfs(path(p), &stfs));
+ unlock_user(p, arg1, 0);
+ convert_statfs:
+ if (!is_error(ret)) {
+ struct target_statfs *target_stfs;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
+ return -TARGET_EFAULT;
+ __put_user(stfs.f_type, &target_stfs->f_type);
+ __put_user(stfs.f_bsize, &target_stfs->f_bsize);
+ __put_user(stfs.f_blocks, &target_stfs->f_blocks);
+ __put_user(stfs.f_bfree, &target_stfs->f_bfree);
+ __put_user(stfs.f_bavail, &target_stfs->f_bavail);
+ __put_user(stfs.f_files, &target_stfs->f_files);
+ __put_user(stfs.f_ffree, &target_stfs->f_ffree);
+ __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
+ __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
+ __put_user(stfs.f_namelen, &target_stfs->f_namelen);
+ __put_user(stfs.f_frsize, &target_stfs->f_frsize);
+#ifdef _STATFS_F_FLAGS
+ __put_user(stfs.f_flags, &target_stfs->f_flags);
+#else
+ __put_user(0, &target_stfs->f_flags);
+#endif
+ memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
+ unlock_user_struct(target_stfs, arg2, 1);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_fstatfs
+ case TARGET_NR_fstatfs:
+ ret = get_errno(fstatfs(arg1, &stfs));
+ goto convert_statfs;
+#endif
+#ifdef TARGET_NR_statfs64
+ case TARGET_NR_statfs64:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(statfs(path(p), &stfs));
+ unlock_user(p, arg1, 0);
+ convert_statfs64:
+ if (!is_error(ret)) {
+ struct target_statfs64 *target_stfs;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
+ return -TARGET_EFAULT;
+ __put_user(stfs.f_type, &target_stfs->f_type);
+ __put_user(stfs.f_bsize, &target_stfs->f_bsize);
+ __put_user(stfs.f_blocks, &target_stfs->f_blocks);
+ __put_user(stfs.f_bfree, &target_stfs->f_bfree);
+ __put_user(stfs.f_bavail, &target_stfs->f_bavail);
+ __put_user(stfs.f_files, &target_stfs->f_files);
+ __put_user(stfs.f_ffree, &target_stfs->f_ffree);
+ __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
+ __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
+ __put_user(stfs.f_namelen, &target_stfs->f_namelen);
+ __put_user(stfs.f_frsize, &target_stfs->f_frsize);
+#ifdef _STATFS_F_FLAGS
+ __put_user(stfs.f_flags, &target_stfs->f_flags);
+#else
+ __put_user(0, &target_stfs->f_flags);
+#endif
+ memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
+ unlock_user_struct(target_stfs, arg3, 1);
+ }
+ return ret;
+ case TARGET_NR_fstatfs64:
+ ret = get_errno(fstatfs(arg1, &stfs));
+ goto convert_statfs64;
+#endif
+#ifdef TARGET_NR_socketcall
+ case TARGET_NR_socketcall:
+ return do_socketcall(arg1, arg2);
+#endif
+#ifdef TARGET_NR_accept
+ case TARGET_NR_accept:
+ return do_accept4(arg1, arg2, arg3, 0);
+#endif
+#ifdef TARGET_NR_accept4
+ case TARGET_NR_accept4:
+ return do_accept4(arg1, arg2, arg3, arg4);
+#endif
+#ifdef TARGET_NR_bind
+ case TARGET_NR_bind:
+ return do_bind(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_connect
+ case TARGET_NR_connect:
+ return do_connect(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_getpeername
+ case TARGET_NR_getpeername:
+ return do_getpeername(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_getsockname
+ case TARGET_NR_getsockname:
+ return do_getsockname(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_getsockopt
+ case TARGET_NR_getsockopt:
+ return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
+#endif
+#ifdef TARGET_NR_listen
+ case TARGET_NR_listen:
+ return get_errno(listen(arg1, arg2));
+#endif
+#ifdef TARGET_NR_recv
+ case TARGET_NR_recv:
+ return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
+#endif
+#ifdef TARGET_NR_recvfrom
+ case TARGET_NR_recvfrom:
+ return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
+#endif
+#ifdef TARGET_NR_recvmsg
+ case TARGET_NR_recvmsg:
+ return do_sendrecvmsg(arg1, arg2, arg3, 0);
+#endif
+#ifdef TARGET_NR_send
+ case TARGET_NR_send:
+ return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
+#endif
+#ifdef TARGET_NR_sendmsg
+ case TARGET_NR_sendmsg:
+ return do_sendrecvmsg(arg1, arg2, arg3, 1);
+#endif
+#ifdef TARGET_NR_sendmmsg
+ case TARGET_NR_sendmmsg:
+ return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
+#endif
+#ifdef TARGET_NR_recvmmsg
+ case TARGET_NR_recvmmsg:
+ return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
+#endif
+#ifdef TARGET_NR_sendto
+ case TARGET_NR_sendto:
+ return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
+#endif
+#ifdef TARGET_NR_shutdown
+ case TARGET_NR_shutdown:
+ return get_errno(shutdown(arg1, arg2));
+#endif
+#if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
+ case TARGET_NR_getrandom:
+ p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(getrandom(p, arg2, arg3));
+ unlock_user(p, arg1, ret);
+ return ret;
+#endif
+#ifdef TARGET_NR_socket
+ case TARGET_NR_socket:
+ return do_socket(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_socketpair
+ case TARGET_NR_socketpair:
+ return do_socketpair(arg1, arg2, arg3, arg4);
+#endif
+#ifdef TARGET_NR_setsockopt
+ case TARGET_NR_setsockopt:
+ return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
+#endif
+#if defined(TARGET_NR_syslog)
+ case TARGET_NR_syslog:
+ {
+ int len = arg2;
+
+ switch (arg1) {
+ case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
+ case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
+ case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
+ case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
+ case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
+ case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
+ case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
+ case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
+ return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
+ case TARGET_SYSLOG_ACTION_READ: /* Read from log */
+ case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
+ case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
+ {
+ if (len < 0) {
+ return -TARGET_EINVAL;
+ }
+ if (len == 0) {
+ return 0;
+ }
+ p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
+ unlock_user(p, arg2, arg3);
+ }
+ return ret;
+ default:
+ return -TARGET_EINVAL;
+ }
+ }
+ break;
+#endif
+ case TARGET_NR_setitimer:
+ {
+ struct itimerval value, ovalue, *pvalue;
+
+ if (arg2) {
+ pvalue = &value;
+ if (copy_from_user_timeval(&pvalue->it_interval, arg2)
+ || copy_from_user_timeval(&pvalue->it_value,
+ arg2 + sizeof(struct target_timeval)))
+ return -TARGET_EFAULT;
+ } else {
+ pvalue = NULL;
+ }
+ ret = get_errno(setitimer(arg1, pvalue, &ovalue));
+ if (!is_error(ret) && arg3) {
+ if (copy_to_user_timeval(arg3,
+ &ovalue.it_interval)
+ || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
+ &ovalue.it_value))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ case TARGET_NR_getitimer:
+ {
+ struct itimerval value;
+
+ ret = get_errno(getitimer(arg1, &value));
+ if (!is_error(ret) && arg2) {
+ if (copy_to_user_timeval(arg2,
+ &value.it_interval)
+ || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
+ &value.it_value))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#ifdef TARGET_NR_stat
+ case TARGET_NR_stat:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(stat(path(p), &st));
+ unlock_user(p, arg1, 0);
+ goto do_stat;
+#endif
+#ifdef TARGET_NR_lstat
+ case TARGET_NR_lstat:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(lstat(path(p), &st));
+ unlock_user(p, arg1, 0);
+ goto do_stat;
+#endif
+#ifdef TARGET_NR_fstat
+ case TARGET_NR_fstat:
+ {
+ ret = get_errno(fstat(arg1, &st));
+#if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
+ do_stat:
+#endif
+ if (!is_error(ret)) {
+ struct target_stat *target_st;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
+ return -TARGET_EFAULT;
+ memset(target_st, 0, sizeof(*target_st));
+ __put_user(st.st_dev, &target_st->st_dev);
+ __put_user(st.st_ino, &target_st->st_ino);
+ __put_user(st.st_mode, &target_st->st_mode);
+ __put_user(st.st_uid, &target_st->st_uid);
+ __put_user(st.st_gid, &target_st->st_gid);
+ __put_user(st.st_nlink, &target_st->st_nlink);
+ __put_user(st.st_rdev, &target_st->st_rdev);
+ __put_user(st.st_size, &target_st->st_size);
+ __put_user(st.st_blksize, &target_st->st_blksize);
+ __put_user(st.st_blocks, &target_st->st_blocks);
+ __put_user(st.st_atime, &target_st->target_st_atime);
+ __put_user(st.st_mtime, &target_st->target_st_mtime);
+ __put_user(st.st_ctime, &target_st->target_st_ctime);
+#if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \
+ defined(TARGET_STAT_HAVE_NSEC)
+ __put_user(st.st_atim.tv_nsec,
+ &target_st->target_st_atime_nsec);
+ __put_user(st.st_mtim.tv_nsec,
+ &target_st->target_st_mtime_nsec);
+ __put_user(st.st_ctim.tv_nsec,
+ &target_st->target_st_ctime_nsec);
+#endif
+ unlock_user_struct(target_st, arg2, 1);
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_vhangup:
+ return get_errno(vhangup());
+#ifdef TARGET_NR_syscall
+ case TARGET_NR_syscall:
+ return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
+ arg6, arg7, arg8, 0);
+#endif
+#if defined(TARGET_NR_wait4)
+ case TARGET_NR_wait4:
+ {
+ int status;
+ abi_long status_ptr = arg2;
+ struct rusage rusage, *rusage_ptr;
+ abi_ulong target_rusage = arg4;
+ abi_long rusage_err;
+ if (target_rusage)
+ rusage_ptr = &rusage;
+ else
+ rusage_ptr = NULL;
+ ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
+ if (!is_error(ret)) {
+ if (status_ptr && ret) {
+ status = host_to_target_waitstatus(status);
+ if (put_user_s32(status, status_ptr))
+ return -TARGET_EFAULT;
+ }
+ if (target_rusage) {
+ rusage_err = host_to_target_rusage(target_rusage, &rusage);
+ if (rusage_err) {
+ ret = rusage_err;
+ }
+ }
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_swapoff
+ case TARGET_NR_swapoff:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(swapoff(p));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_sysinfo:
+ {
+ struct target_sysinfo *target_value;
+ struct sysinfo value;
+ ret = get_errno(sysinfo(&value));
+ if (!is_error(ret) && arg1)
+ {
+ if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
+ return -TARGET_EFAULT;
+ __put_user(value.uptime, &target_value->uptime);
+ __put_user(value.loads[0], &target_value->loads[0]);
+ __put_user(value.loads[1], &target_value->loads[1]);
+ __put_user(value.loads[2], &target_value->loads[2]);
+ __put_user(value.totalram, &target_value->totalram);
+ __put_user(value.freeram, &target_value->freeram);
+ __put_user(value.sharedram, &target_value->sharedram);
+ __put_user(value.bufferram, &target_value->bufferram);
+ __put_user(value.totalswap, &target_value->totalswap);
+ __put_user(value.freeswap, &target_value->freeswap);
+ __put_user(value.procs, &target_value->procs);
+ __put_user(value.totalhigh, &target_value->totalhigh);
+ __put_user(value.freehigh, &target_value->freehigh);
+ __put_user(value.mem_unit, &target_value->mem_unit);
+ unlock_user_struct(target_value, arg1, 1);
+ }
+ }
+ return ret;
+#ifdef TARGET_NR_ipc
+ case TARGET_NR_ipc:
+ return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
+#endif
+#ifdef TARGET_NR_semget
+ case TARGET_NR_semget:
+ return get_errno(semget(arg1, arg2, arg3));
+#endif
+#ifdef TARGET_NR_semop
+ case TARGET_NR_semop:
+ return do_semtimedop(arg1, arg2, arg3, 0, false);
+#endif
+#ifdef TARGET_NR_semtimedop
+ case TARGET_NR_semtimedop:
+ return do_semtimedop(arg1, arg2, arg3, arg4, false);
+#endif
+#ifdef TARGET_NR_semtimedop_time64
+ case TARGET_NR_semtimedop_time64:
+ return do_semtimedop(arg1, arg2, arg3, arg4, true);
+#endif
+#ifdef TARGET_NR_semctl
+ case TARGET_NR_semctl:
+ return do_semctl(arg1, arg2, arg3, arg4);
+#endif
+#ifdef TARGET_NR_msgctl
+ case TARGET_NR_msgctl:
+ return do_msgctl(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_msgget
+ case TARGET_NR_msgget:
+ return get_errno(msgget(arg1, arg2));
+#endif
+#ifdef TARGET_NR_msgrcv
+ case TARGET_NR_msgrcv:
+ return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
+#endif
+#ifdef TARGET_NR_msgsnd
+ case TARGET_NR_msgsnd:
+ return do_msgsnd(arg1, arg2, arg3, arg4);
+#endif
+#ifdef TARGET_NR_shmget
+ case TARGET_NR_shmget:
+ return get_errno(shmget(arg1, arg2, arg3));
+#endif
+#ifdef TARGET_NR_shmctl
+ case TARGET_NR_shmctl:
+ return do_shmctl(arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_shmat
+ case TARGET_NR_shmat:
+ return do_shmat(cpu_env, arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_shmdt
+ case TARGET_NR_shmdt:
+ return do_shmdt(arg1);
+#endif
+ case TARGET_NR_fsync:
+ return get_errno(fsync(arg1));
+ case TARGET_NR_clone:
+ /* Linux manages to have three different orderings for its
+ * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
+ * match the kernel's CONFIG_CLONE_* settings.
+ * Microblaze is further special in that it uses a sixth
+ * implicit argument to clone for the TLS pointer.
+ */
+#if defined(TARGET_MICROBLAZE)
+ ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
+#elif defined(TARGET_CLONE_BACKWARDS)
+ ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
+#elif defined(TARGET_CLONE_BACKWARDS2)
+ ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
+#else
+ ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
+#endif
+ return ret;
+#ifdef __NR_exit_group
+ /* new thread calls */
+ case TARGET_NR_exit_group:
+ preexit_cleanup(cpu_env, arg1);
+ return get_errno(exit_group(arg1));
+#endif
+ case TARGET_NR_setdomainname:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(setdomainname(p, arg2));
+ unlock_user(p, arg1, 0);
+ return ret;
+ case TARGET_NR_uname:
+ /* no need to transcode because we use the linux syscall */
+ {
+ struct new_utsname * buf;
+
+ if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
+ return -TARGET_EFAULT;
+ ret = get_errno(sys_uname(buf));
+ if (!is_error(ret)) {
+ /* Overwrite the native machine name with whatever is being
+ emulated. */
+ g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
+ sizeof(buf->machine));
+ /* Allow the user to override the reported release. */
+ if (qemu_uname_release && *qemu_uname_release) {
+ g_strlcpy(buf->release, qemu_uname_release,
+ sizeof(buf->release));
+ }
+ }
+ unlock_user_struct(buf, arg1, 1);
+ }
+ return ret;
+#ifdef TARGET_I386
+ case TARGET_NR_modify_ldt:
+ return do_modify_ldt(cpu_env, arg1, arg2, arg3);
+#if !defined(TARGET_X86_64)
+ case TARGET_NR_vm86:
+ return do_vm86(cpu_env, arg1, arg2);
+#endif
+#endif
+#if defined(TARGET_NR_adjtimex)
+ case TARGET_NR_adjtimex:
+ {
+ struct timex host_buf;
+
+ if (target_to_host_timex(&host_buf, arg1) != 0) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(adjtimex(&host_buf));
+ if (!is_error(ret)) {
+ if (host_to_target_timex(arg1, &host_buf) != 0) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
+ case TARGET_NR_clock_adjtime:
+ {
+ struct timex htx, *phtx = &htx;
+
+ if (target_to_host_timex(phtx, arg2) != 0) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(clock_adjtime(arg1, phtx));
+ if (!is_error(ret) && phtx) {
+ if (host_to_target_timex(arg2, phtx) != 0) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
+ case TARGET_NR_clock_adjtime64:
+ {
+ struct timex htx;
+
+ if (target_to_host_timex64(&htx, arg2) != 0) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(clock_adjtime(arg1, &htx));
+ if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_getpgid:
+ return get_errno(getpgid(arg1));
+ case TARGET_NR_fchdir:
+ return get_errno(fchdir(arg1));
+ case TARGET_NR_personality:
+ return get_errno(personality(arg1));
+#ifdef TARGET_NR__llseek /* Not on alpha */
+ case TARGET_NR__llseek:
+ {
+ int64_t res;
+#if !defined(__NR_llseek)
+ res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
+ if (res == -1) {
+ ret = get_errno(res);
+ } else {
+ ret = 0;
+ }
+#else
+ ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
+#endif
+ if ((ret == 0) && put_user_s64(res, arg4)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_getdents
+ case TARGET_NR_getdents:
+#ifdef EMULATE_GETDENTS_WITH_GETDENTS
+#if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
+ {
+ struct target_dirent *target_dirp;
+ struct linux_dirent *dirp;
+ abi_long count = arg3;
+
+ dirp = g_try_malloc(count);
+ if (!dirp) {
+ return -TARGET_ENOMEM;
+ }
+
+ ret = get_errno(sys_getdents(arg1, dirp, count));
+ if (!is_error(ret)) {
+ struct linux_dirent *de;
+ struct target_dirent *tde;
+ int len = ret;
+ int reclen, treclen;
+ int count1, tnamelen;
+
+ count1 = 0;
+ de = dirp;
+ if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
+ return -TARGET_EFAULT;
+ tde = target_dirp;
+ while (len > 0) {
+ reclen = de->d_reclen;
+ tnamelen = reclen - offsetof(struct linux_dirent, d_name);
+ assert(tnamelen >= 0);
+ treclen = tnamelen + offsetof(struct target_dirent, d_name);
+ assert(count1 + treclen <= count);
+ tde->d_reclen = tswap16(treclen);
+ tde->d_ino = tswapal(de->d_ino);
+ tde->d_off = tswapal(de->d_off);
+ memcpy(tde->d_name, de->d_name, tnamelen);
+ de = (struct linux_dirent *)((char *)de + reclen);
+ len -= reclen;
+ tde = (struct target_dirent *)((char *)tde + treclen);
+ count1 += treclen;
+ }
+ ret = count1;
+ unlock_user(target_dirp, arg2, ret);
+ }
+ g_free(dirp);
+ }
+#else
+ {
+ struct linux_dirent *dirp;
+ abi_long count = arg3;
+
+ if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
+ return -TARGET_EFAULT;
+ ret = get_errno(sys_getdents(arg1, dirp, count));
+ if (!is_error(ret)) {
+ struct linux_dirent *de;
+ int len = ret;
+ int reclen;
+ de = dirp;
+ while (len > 0) {
+ reclen = de->d_reclen;
+ if (reclen > len)
+ break;
+ de->d_reclen = tswap16(reclen);
+ tswapls(&de->d_ino);
+ tswapls(&de->d_off);
+ de = (struct linux_dirent *)((char *)de + reclen);
+ len -= reclen;
+ }
+ }
+ unlock_user(dirp, arg2, ret);
+ }
+#endif
+#else
+ /* Implement getdents in terms of getdents64 */
+ {
+ struct linux_dirent64 *dirp;
+ abi_long count = arg3;
+
+ dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
+ if (!dirp) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(sys_getdents64(arg1, dirp, count));
+ if (!is_error(ret)) {
+ /* Convert the dirent64 structs to target dirent. We do this
+ * in-place, since we can guarantee that a target_dirent is no
+ * larger than a dirent64; however this means we have to be
+ * careful to read everything before writing in the new format.
+ */
+ struct linux_dirent64 *de;
+ struct target_dirent *tde;
+ int len = ret;
+ int tlen = 0;
+
+ de = dirp;
+ tde = (struct target_dirent *)dirp;
+ while (len > 0) {
+ int namelen, treclen;
+ int reclen = de->d_reclen;
+ uint64_t ino = de->d_ino;
+ int64_t off = de->d_off;
+ uint8_t type = de->d_type;
+
+ namelen = strlen(de->d_name);
+ treclen = offsetof(struct target_dirent, d_name)
+ + namelen + 2;
+ treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
+
+ memmove(tde->d_name, de->d_name, namelen + 1);
+ tde->d_ino = tswapal(ino);
+ tde->d_off = tswapal(off);
+ tde->d_reclen = tswap16(treclen);
+ /* The target_dirent type is in what was formerly a padding
+ * byte at the end of the structure:
+ */
+ *(((char *)tde) + treclen - 1) = type;
+
+ de = (struct linux_dirent64 *)((char *)de + reclen);
+ tde = (struct target_dirent *)((char *)tde + treclen);
+ len -= reclen;
+ tlen += treclen;
+ }
+ ret = tlen;
+ }
+ unlock_user(dirp, arg2, ret);
+ }
+#endif
+ return ret;
+#endif /* TARGET_NR_getdents */
+#if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
+ case TARGET_NR_getdents64:
+ {
+ struct linux_dirent64 *dirp;
+ abi_long count = arg3;
+ if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
+ return -TARGET_EFAULT;
+ ret = get_errno(sys_getdents64(arg1, dirp, count));
+ if (!is_error(ret)) {
+ struct linux_dirent64 *de;
+ int len = ret;
+ int reclen;
+ de = dirp;
+ while (len > 0) {
+ reclen = de->d_reclen;
+ if (reclen > len)
+ break;
+ de->d_reclen = tswap16(reclen);
+ tswap64s((uint64_t *)&de->d_ino);
+ tswap64s((uint64_t *)&de->d_off);
+ de = (struct linux_dirent64 *)((char *)de + reclen);
+ len -= reclen;
+ }
+ }
+ unlock_user(dirp, arg2, ret);
+ }
+ return ret;
+#endif /* TARGET_NR_getdents64 */
+#if defined(TARGET_NR__newselect)
+ case TARGET_NR__newselect:
+ return do_select(arg1, arg2, arg3, arg4, arg5);
+#endif
+#ifdef TARGET_NR_poll
+ case TARGET_NR_poll:
+ return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false);
+#endif
+#ifdef TARGET_NR_ppoll
+ case TARGET_NR_ppoll:
+ return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false);
+#endif
+#ifdef TARGET_NR_ppoll_time64
+ case TARGET_NR_ppoll_time64:
+ return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true);
+#endif
+ case TARGET_NR_flock:
+ /* NOTE: the flock constant seems to be the same for every
+ Linux platform */
+ return get_errno(safe_flock(arg1, arg2));
+ case TARGET_NR_readv:
+ {
+ struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
+ if (vec != NULL) {
+ ret = get_errno(safe_readv(arg1, vec, arg3));
+ unlock_iovec(vec, arg2, arg3, 1);
+ } else {
+ ret = -host_to_target_errno(errno);
+ }
+ }
+ return ret;
+ case TARGET_NR_writev:
+ {
+ struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
+ if (vec != NULL) {
+ ret = get_errno(safe_writev(arg1, vec, arg3));
+ unlock_iovec(vec, arg2, arg3, 0);
+ } else {
+ ret = -host_to_target_errno(errno);
+ }
+ }
+ return ret;
+#if defined(TARGET_NR_preadv)
+ case TARGET_NR_preadv:
+ {
+ struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
+ if (vec != NULL) {
+ unsigned long low, high;
+
+ target_to_host_low_high(arg4, arg5, &low, &high);
+ ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
+ unlock_iovec(vec, arg2, arg3, 1);
+ } else {
+ ret = -host_to_target_errno(errno);
+ }
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_pwritev)
+ case TARGET_NR_pwritev:
+ {
+ struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
+ if (vec != NULL) {
+ unsigned long low, high;
+
+ target_to_host_low_high(arg4, arg5, &low, &high);
+ ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
+ unlock_iovec(vec, arg2, arg3, 0);
+ } else {
+ ret = -host_to_target_errno(errno);
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_getsid:
+ return get_errno(getsid(arg1));
+#if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
+ case TARGET_NR_fdatasync:
+ return get_errno(fdatasync(arg1));
+#endif
+ case TARGET_NR_sched_getaffinity:
+ {
+ unsigned int mask_size;
+ unsigned long *mask;
+
+ /*
+ * sched_getaffinity needs multiples of ulong, so need to take
+ * care of mismatches between target ulong and host ulong sizes.
+ */
+ if (arg2 & (sizeof(abi_ulong) - 1)) {
+ return -TARGET_EINVAL;
+ }
+ mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
+
+ mask = alloca(mask_size);
+ memset(mask, 0, mask_size);
+ ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
+
+ if (!is_error(ret)) {
+ if (ret > arg2) {
+ /* More data returned than the caller's buffer will fit.
+ * This only happens if sizeof(abi_long) < sizeof(long)
+ * and the caller passed us a buffer holding an odd number
+ * of abi_longs. If the host kernel is actually using the
+ * extra 4 bytes then fail EINVAL; otherwise we can just
+ * ignore them and only copy the interesting part.
+ */
+ int numcpus = sysconf(_SC_NPROCESSORS_CONF);
+ if (numcpus > arg2 * 8) {
+ return -TARGET_EINVAL;
+ }
+ ret = arg2;
+ }
+
+ if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+ case TARGET_NR_sched_setaffinity:
+ {
+ unsigned int mask_size;
+ unsigned long *mask;
+
+ /*
+ * sched_setaffinity needs multiples of ulong, so need to take
+ * care of mismatches between target ulong and host ulong sizes.
+ */
+ if (arg2 & (sizeof(abi_ulong) - 1)) {
+ return -TARGET_EINVAL;
+ }
+ mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
+ mask = alloca(mask_size);
+
+ ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
+ if (ret) {
+ return ret;
+ }
+
+ return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
+ }
+ case TARGET_NR_getcpu:
+ {
+ unsigned cpu, node;
+ ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
+ arg2 ? &node : NULL,
+ NULL));
+ if (is_error(ret)) {
+ return ret;
+ }
+ if (arg1 && put_user_u32(cpu, arg1)) {
+ return -TARGET_EFAULT;
+ }
+ if (arg2 && put_user_u32(node, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ case TARGET_NR_sched_setparam:
+ {
+ struct sched_param *target_schp;
+ struct sched_param schp;
+
+ if (arg2 == 0) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
+ return -TARGET_EFAULT;
+ schp.sched_priority = tswap32(target_schp->sched_priority);
+ unlock_user_struct(target_schp, arg2, 0);
+ return get_errno(sched_setparam(arg1, &schp));
+ }
+ case TARGET_NR_sched_getparam:
+ {
+ struct sched_param *target_schp;
+ struct sched_param schp;
+
+ if (arg2 == 0) {
+ return -TARGET_EINVAL;
+ }
+ ret = get_errno(sched_getparam(arg1, &schp));
+ if (!is_error(ret)) {
+ if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
+ return -TARGET_EFAULT;
+ target_schp->sched_priority = tswap32(schp.sched_priority);
+ unlock_user_struct(target_schp, arg2, 1);
+ }
+ }
+ return ret;
+ case TARGET_NR_sched_setscheduler:
+ {
+ struct sched_param *target_schp;
+ struct sched_param schp;
+ if (arg3 == 0) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
+ return -TARGET_EFAULT;
+ schp.sched_priority = tswap32(target_schp->sched_priority);
+ unlock_user_struct(target_schp, arg3, 0);
+ return get_errno(sched_setscheduler(arg1, arg2, &schp));
+ }
+ case TARGET_NR_sched_getscheduler:
+ return get_errno(sched_getscheduler(arg1));
+ case TARGET_NR_sched_yield:
+ return get_errno(sched_yield());
+ case TARGET_NR_sched_get_priority_max:
+ return get_errno(sched_get_priority_max(arg1));
+ case TARGET_NR_sched_get_priority_min:
+ return get_errno(sched_get_priority_min(arg1));
+#ifdef TARGET_NR_sched_rr_get_interval
+ case TARGET_NR_sched_rr_get_interval:
+ {
+ struct timespec ts;
+ ret = get_errno(sched_rr_get_interval(arg1, &ts));
+ if (!is_error(ret)) {
+ ret = host_to_target_timespec(arg2, &ts);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_sched_rr_get_interval_time64
+ case TARGET_NR_sched_rr_get_interval_time64:
+ {
+ struct timespec ts;
+ ret = get_errno(sched_rr_get_interval(arg1, &ts));
+ if (!is_error(ret)) {
+ ret = host_to_target_timespec64(arg2, &ts);
+ }
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_nanosleep)
+ case TARGET_NR_nanosleep:
+ {
+ struct timespec req, rem;
+ target_to_host_timespec(&req, arg1);
+ ret = get_errno(safe_nanosleep(&req, &rem));
+ if (is_error(ret) && arg2) {
+ host_to_target_timespec(arg2, &rem);
+ }
+ }
+ return ret;
+#endif
+ case TARGET_NR_prctl:
+ switch (arg1) {
+ case PR_GET_PDEATHSIG:
+ {
+ int deathsig;
+ ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
+ if (!is_error(ret) && arg2
+ && put_user_s32(deathsig, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ return ret;
+ }
+#ifdef PR_GET_NAME
+ case PR_GET_NAME:
+ {
+ void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
+ if (!name) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(prctl(arg1, (unsigned long)name,
+ arg3, arg4, arg5));
+ unlock_user(name, arg2, 16);
+ return ret;
+ }
+ case PR_SET_NAME:
+ {
+ void *name = lock_user(VERIFY_READ, arg2, 16, 1);
+ if (!name) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(prctl(arg1, (unsigned long)name,
+ arg3, arg4, arg5));
+ unlock_user(name, arg2, 0);
+ return ret;
+ }
+#endif
+#ifdef TARGET_MIPS
+ case TARGET_PR_GET_FP_MODE:
+ {
+ CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
+ ret = 0;
+ if (env->CP0_Status & (1 << CP0St_FR)) {
+ ret |= TARGET_PR_FP_MODE_FR;
+ }
+ if (env->CP0_Config5 & (1 << CP0C5_FRE)) {
+ ret |= TARGET_PR_FP_MODE_FRE;
+ }
+ return ret;
+ }
+ case TARGET_PR_SET_FP_MODE:
+ {
+ CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
+ bool old_fr = env->CP0_Status & (1 << CP0St_FR);
+ bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE);
+ bool new_fr = arg2 & TARGET_PR_FP_MODE_FR;
+ bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE;
+
+ const unsigned int known_bits = TARGET_PR_FP_MODE_FR |
+ TARGET_PR_FP_MODE_FRE;
+
+ /* If nothing to change, return right away, successfully. */
+ if (old_fr == new_fr && old_fre == new_fre) {
+ return 0;
+ }
+ /* Check the value is valid */
+ if (arg2 & ~known_bits) {
+ return -TARGET_EOPNOTSUPP;
+ }
+ /* Setting FRE without FR is not supported. */
+ if (new_fre && !new_fr) {
+ return -TARGET_EOPNOTSUPP;
+ }
+ if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) {
+ /* FR1 is not supported */
+ return -TARGET_EOPNOTSUPP;
+ }
+ if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64))
+ && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) {
+ /* cannot set FR=0 */
+ return -TARGET_EOPNOTSUPP;
+ }
+ if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) {
+ /* Cannot set FRE=1 */
+ return -TARGET_EOPNOTSUPP;
+ }
+
+ int i;
+ fpr_t *fpr = env->active_fpu.fpr;
+ for (i = 0; i < 32 ; i += 2) {
+ if (!old_fr && new_fr) {
+ fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX];
+ } else if (old_fr && !new_fr) {
+ fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX];
+ }
+ }
+
+ if (new_fr) {
+ env->CP0_Status |= (1 << CP0St_FR);
+ env->hflags |= MIPS_HFLAG_F64;
+ } else {
+ env->CP0_Status &= ~(1 << CP0St_FR);
+ env->hflags &= ~MIPS_HFLAG_F64;
+ }
+ if (new_fre) {
+ env->CP0_Config5 |= (1 << CP0C5_FRE);
+ if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) {
+ env->hflags |= MIPS_HFLAG_FRE;
+ }
+ } else {
+ env->CP0_Config5 &= ~(1 << CP0C5_FRE);
+ env->hflags &= ~MIPS_HFLAG_FRE;
+ }
+
+ return 0;
+ }
+#endif /* MIPS */
+#ifdef TARGET_AARCH64
+ case TARGET_PR_SVE_SET_VL:
+ /*
+ * We cannot support either PR_SVE_SET_VL_ONEXEC or
+ * PR_SVE_VL_INHERIT. Note the kernel definition
+ * of sve_vl_valid allows for VQ=512, i.e. VL=8192,
+ * even though the current architectural maximum is VQ=16.
+ */
+ ret = -TARGET_EINVAL;
+ if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env))
+ && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
+ CPUARMState *env = cpu_env;
+ ARMCPU *cpu = env_archcpu(env);
+ uint32_t vq, old_vq;
+
+ old_vq = (env->vfp.zcr_el[1] & 0xf) + 1;
+ vq = MAX(arg2 / 16, 1);
+ vq = MIN(vq, cpu->sve_max_vq);
+
+ if (vq < old_vq) {
+ aarch64_sve_narrow_vq(env, vq);
+ }
+ env->vfp.zcr_el[1] = vq - 1;
+ arm_rebuild_hflags(env);
+ ret = vq * 16;
+ }
+ return ret;
+ case TARGET_PR_SVE_GET_VL:
+ ret = -TARGET_EINVAL;
+ {
+ ARMCPU *cpu = env_archcpu(cpu_env);
+ if (cpu_isar_feature(aa64_sve, cpu)) {
+ ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16;
+ }
+ }
+ return ret;
+ case TARGET_PR_PAC_RESET_KEYS:
+ {
+ CPUARMState *env = cpu_env;
+ ARMCPU *cpu = env_archcpu(env);
+
+ if (arg3 || arg4 || arg5) {
+ return -TARGET_EINVAL;
+ }
+ if (cpu_isar_feature(aa64_pauth, cpu)) {
+ int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY |
+ TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY |
+ TARGET_PR_PAC_APGAKEY);
+ int ret = 0;
+ Error *err = NULL;
+
+ if (arg2 == 0) {
+ arg2 = all;
+ } else if (arg2 & ~all) {
+ return -TARGET_EINVAL;
+ }
+ if (arg2 & TARGET_PR_PAC_APIAKEY) {
+ ret |= qemu_guest_getrandom(&env->keys.apia,
+ sizeof(ARMPACKey), &err);
+ }
+ if (arg2 & TARGET_PR_PAC_APIBKEY) {
+ ret |= qemu_guest_getrandom(&env->keys.apib,
+ sizeof(ARMPACKey), &err);
+ }
+ if (arg2 & TARGET_PR_PAC_APDAKEY) {
+ ret |= qemu_guest_getrandom(&env->keys.apda,
+ sizeof(ARMPACKey), &err);
+ }
+ if (arg2 & TARGET_PR_PAC_APDBKEY) {
+ ret |= qemu_guest_getrandom(&env->keys.apdb,
+ sizeof(ARMPACKey), &err);
+ }
+ if (arg2 & TARGET_PR_PAC_APGAKEY) {
+ ret |= qemu_guest_getrandom(&env->keys.apga,
+ sizeof(ARMPACKey), &err);
+ }
+ if (ret != 0) {
+ /*
+ * Some unknown failure in the crypto. The best
+ * we can do is log it and fail the syscall.
+ * The real syscall cannot fail this way.
+ */
+ qemu_log_mask(LOG_UNIMP,
+ "PR_PAC_RESET_KEYS: Crypto failure: %s",
+ error_get_pretty(err));
+ error_free(err);
+ return -TARGET_EIO;
+ }
+ return 0;
+ }
+ }
+ return -TARGET_EINVAL;
+ case TARGET_PR_SET_TAGGED_ADDR_CTRL:
+ {
+ abi_ulong valid_mask = TARGET_PR_TAGGED_ADDR_ENABLE;
+ CPUARMState *env = cpu_env;
+ ARMCPU *cpu = env_archcpu(env);
+
+ if (cpu_isar_feature(aa64_mte, cpu)) {
+ valid_mask |= TARGET_PR_MTE_TCF_MASK;
+ valid_mask |= TARGET_PR_MTE_TAG_MASK;
+ }
+
+ if ((arg2 & ~valid_mask) || arg3 || arg4 || arg5) {
+ return -TARGET_EINVAL;
+ }
+ env->tagged_addr_enable = arg2 & TARGET_PR_TAGGED_ADDR_ENABLE;
+
+ if (cpu_isar_feature(aa64_mte, cpu)) {
+ switch (arg2 & TARGET_PR_MTE_TCF_MASK) {
+ case TARGET_PR_MTE_TCF_NONE:
+ case TARGET_PR_MTE_TCF_SYNC:
+ case TARGET_PR_MTE_TCF_ASYNC:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Write PR_MTE_TCF to SCTLR_EL1[TCF0].
+ * Note that the syscall values are consistent with hw.
+ */
+ env->cp15.sctlr_el[1] =
+ deposit64(env->cp15.sctlr_el[1], 38, 2,
+ arg2 >> TARGET_PR_MTE_TCF_SHIFT);
+
+ /*
+ * Write PR_MTE_TAG to GCR_EL1[Exclude].
+ * Note that the syscall uses an include mask,
+ * and hardware uses an exclude mask -- invert.
+ */
+ env->cp15.gcr_el1 =
+ deposit64(env->cp15.gcr_el1, 0, 16,
+ ~arg2 >> TARGET_PR_MTE_TAG_SHIFT);
+ arm_rebuild_hflags(env);
+ }
+ return 0;
+ }
+ case TARGET_PR_GET_TAGGED_ADDR_CTRL:
+ {
+ abi_long ret = 0;
+ CPUARMState *env = cpu_env;
+ ARMCPU *cpu = env_archcpu(env);
+
+ if (arg2 || arg3 || arg4 || arg5) {
+ return -TARGET_EINVAL;
+ }
+ if (env->tagged_addr_enable) {
+ ret |= TARGET_PR_TAGGED_ADDR_ENABLE;
+ }
+ if (cpu_isar_feature(aa64_mte, cpu)) {
+ /* See above. */
+ ret |= (extract64(env->cp15.sctlr_el[1], 38, 2)
+ << TARGET_PR_MTE_TCF_SHIFT);
+ ret = deposit64(ret, TARGET_PR_MTE_TAG_SHIFT, 16,
+ ~env->cp15.gcr_el1);
+ }
+ return ret;
+ }
+#endif /* AARCH64 */
+ case PR_GET_SECCOMP:
+ case PR_SET_SECCOMP:
+ /* Disable seccomp to prevent the target disabling syscalls we
+ * need. */
+ return -TARGET_EINVAL;
+ default:
+ /* Most prctl options have no pointer arguments */
+ return get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
+ }
+ break;
+#ifdef TARGET_NR_arch_prctl
+ case TARGET_NR_arch_prctl:
+ return do_arch_prctl(cpu_env, arg1, arg2);
+#endif
+#ifdef TARGET_NR_pread64
+ case TARGET_NR_pread64:
+ if (regpairs_aligned(cpu_env, num)) {
+ arg4 = arg5;
+ arg5 = arg6;
+ }
+ if (arg2 == 0 && arg3 == 0) {
+ /* Special-case NULL buffer and zero length, which should succeed */
+ p = 0;
+ } else {
+ p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ }
+ ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
+ unlock_user(p, arg2, ret);
+ return ret;
+ case TARGET_NR_pwrite64:
+ if (regpairs_aligned(cpu_env, num)) {
+ arg4 = arg5;
+ arg5 = arg6;
+ }
+ if (arg2 == 0 && arg3 == 0) {
+ /* Special-case NULL buffer and zero length, which should succeed */
+ p = 0;
+ } else {
+ p = lock_user(VERIFY_READ, arg2, arg3, 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ }
+ ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+ case TARGET_NR_getcwd:
+ if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
+ return -TARGET_EFAULT;
+ ret = get_errno(sys_getcwd1(p, arg2));
+ unlock_user(p, arg1, ret);
+ return ret;
+ case TARGET_NR_capget:
+ case TARGET_NR_capset:
+ {
+ struct target_user_cap_header *target_header;
+ struct target_user_cap_data *target_data = NULL;
+ struct __user_cap_header_struct header;
+ struct __user_cap_data_struct data[2];
+ struct __user_cap_data_struct *dataptr = NULL;
+ int i, target_datalen;
+ int data_items = 1;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
+ return -TARGET_EFAULT;
+ }
+ header.version = tswap32(target_header->version);
+ header.pid = tswap32(target_header->pid);
+
+ if (header.version != _LINUX_CAPABILITY_VERSION) {
+ /* Version 2 and up takes pointer to two user_data structs */
+ data_items = 2;
+ }
+
+ target_datalen = sizeof(*target_data) * data_items;
+
+ if (arg2) {
+ if (num == TARGET_NR_capget) {
+ target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
+ } else {
+ target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
+ }
+ if (!target_data) {
+ unlock_user_struct(target_header, arg1, 0);
+ return -TARGET_EFAULT;
+ }
+
+ if (num == TARGET_NR_capset) {
+ for (i = 0; i < data_items; i++) {
+ data[i].effective = tswap32(target_data[i].effective);
+ data[i].permitted = tswap32(target_data[i].permitted);
+ data[i].inheritable = tswap32(target_data[i].inheritable);
+ }
+ }
+
+ dataptr = data;
+ }
+
+ if (num == TARGET_NR_capget) {
+ ret = get_errno(capget(&header, dataptr));
+ } else {
+ ret = get_errno(capset(&header, dataptr));
+ }
+
+ /* The kernel always updates version for both capget and capset */
+ target_header->version = tswap32(header.version);
+ unlock_user_struct(target_header, arg1, 1);
+
+ if (arg2) {
+ if (num == TARGET_NR_capget) {
+ for (i = 0; i < data_items; i++) {
+ target_data[i].effective = tswap32(data[i].effective);
+ target_data[i].permitted = tswap32(data[i].permitted);
+ target_data[i].inheritable = tswap32(data[i].inheritable);
+ }
+ unlock_user(target_data, arg2, target_datalen);
+ } else {
+ unlock_user(target_data, arg2, 0);
+ }
+ }
+ return ret;
+ }
+ case TARGET_NR_sigaltstack:
+ return do_sigaltstack(arg1, arg2,
+ get_sp_from_cpustate((CPUArchState *)cpu_env));
+
+#ifdef CONFIG_SENDFILE
+#ifdef TARGET_NR_sendfile
+ case TARGET_NR_sendfile:
+ {
+ off_t *offp = NULL;
+ off_t off;
+ if (arg3) {
+ ret = get_user_sal(off, arg3);
+ if (is_error(ret)) {
+ return ret;
+ }
+ offp = &off;
+ }
+ ret = get_errno(sendfile(arg1, arg2, offp, arg4));
+ if (!is_error(ret) && arg3) {
+ abi_long ret2 = put_user_sal(off, arg3);
+ if (is_error(ret2)) {
+ ret = ret2;
+ }
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_sendfile64
+ case TARGET_NR_sendfile64:
+ {
+ off_t *offp = NULL;
+ off_t off;
+ if (arg3) {
+ ret = get_user_s64(off, arg3);
+ if (is_error(ret)) {
+ return ret;
+ }
+ offp = &off;
+ }
+ ret = get_errno(sendfile(arg1, arg2, offp, arg4));
+ if (!is_error(ret) && arg3) {
+ abi_long ret2 = put_user_s64(off, arg3);
+ if (is_error(ret2)) {
+ ret = ret2;
+ }
+ }
+ return ret;
+ }
+#endif
+#endif
+#ifdef TARGET_NR_vfork
+ case TARGET_NR_vfork:
+ return get_errno(do_fork(cpu_env,
+ CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
+ 0, 0, 0, 0));
+#endif
+#ifdef TARGET_NR_ugetrlimit
+ case TARGET_NR_ugetrlimit:
+ {
+ struct rlimit rlim;
+ int resource = target_to_host_resource(arg1);
+ ret = get_errno(getrlimit(resource, &rlim));
+ if (!is_error(ret)) {
+ struct target_rlimit *target_rlim;
+ if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
+ return -TARGET_EFAULT;
+ target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
+ target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
+ unlock_user_struct(target_rlim, arg2, 1);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_truncate64
+ case TARGET_NR_truncate64:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_ftruncate64
+ case TARGET_NR_ftruncate64:
+ return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
+#endif
+#ifdef TARGET_NR_stat64
+ case TARGET_NR_stat64:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(stat(path(p), &st));
+ unlock_user(p, arg1, 0);
+ if (!is_error(ret))
+ ret = host_to_target_stat64(cpu_env, arg2, &st);
+ return ret;
+#endif
+#ifdef TARGET_NR_lstat64
+ case TARGET_NR_lstat64:
+ if (!(p = lock_user_string(arg1))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(lstat(path(p), &st));
+ unlock_user(p, arg1, 0);
+ if (!is_error(ret))
+ ret = host_to_target_stat64(cpu_env, arg2, &st);
+ return ret;
+#endif
+#ifdef TARGET_NR_fstat64
+ case TARGET_NR_fstat64:
+ ret = get_errno(fstat(arg1, &st));
+ if (!is_error(ret))
+ ret = host_to_target_stat64(cpu_env, arg2, &st);
+ return ret;
+#endif
+#if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
+#ifdef TARGET_NR_fstatat64
+ case TARGET_NR_fstatat64:
+#endif
+#ifdef TARGET_NR_newfstatat
+ case TARGET_NR_newfstatat:
+#endif
+ if (!(p = lock_user_string(arg2))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(fstatat(arg1, path(p), &st, arg4));
+ unlock_user(p, arg2, 0);
+ if (!is_error(ret))
+ ret = host_to_target_stat64(cpu_env, arg3, &st);
+ return ret;
+#endif
+#if defined(TARGET_NR_statx)
+ case TARGET_NR_statx:
+ {
+ struct target_statx *target_stx;
+ int dirfd = arg1;
+ int flags = arg3;
+
+ p = lock_user_string(arg2);
+ if (p == NULL) {
+ return -TARGET_EFAULT;
+ }
+#if defined(__NR_statx)
+ {
+ /*
+ * It is assumed that struct statx is architecture independent.
+ */
+ struct target_statx host_stx;
+ int mask = arg4;
+
+ ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
+ if (!is_error(ret)) {
+ if (host_to_target_statx(&host_stx, arg5) != 0) {
+ unlock_user(p, arg2, 0);
+ return -TARGET_EFAULT;
+ }
+ }
+
+ if (ret != -TARGET_ENOSYS) {
+ unlock_user(p, arg2, 0);
+ return ret;
+ }
+ }
+#endif
+ ret = get_errno(fstatat(dirfd, path(p), &st, flags));
+ unlock_user(p, arg2, 0);
+
+ if (!is_error(ret)) {
+ if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
+ return -TARGET_EFAULT;
+ }
+ memset(target_stx, 0, sizeof(*target_stx));
+ __put_user(major(st.st_dev), &target_stx->stx_dev_major);
+ __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
+ __put_user(st.st_ino, &target_stx->stx_ino);
+ __put_user(st.st_mode, &target_stx->stx_mode);
+ __put_user(st.st_uid, &target_stx->stx_uid);
+ __put_user(st.st_gid, &target_stx->stx_gid);
+ __put_user(st.st_nlink, &target_stx->stx_nlink);
+ __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
+ __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
+ __put_user(st.st_size, &target_stx->stx_size);
+ __put_user(st.st_blksize, &target_stx->stx_blksize);
+ __put_user(st.st_blocks, &target_stx->stx_blocks);
+ __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
+ __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
+ __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
+ unlock_user_struct(target_stx, arg5, 1);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_lchown
+ case TARGET_NR_lchown:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_getuid
+ case TARGET_NR_getuid:
+ return get_errno(high2lowuid(getuid()));
+#endif
+#ifdef TARGET_NR_getgid
+ case TARGET_NR_getgid:
+ return get_errno(high2lowgid(getgid()));
+#endif
+#ifdef TARGET_NR_geteuid
+ case TARGET_NR_geteuid:
+ return get_errno(high2lowuid(geteuid()));
+#endif
+#ifdef TARGET_NR_getegid
+ case TARGET_NR_getegid:
+ return get_errno(high2lowgid(getegid()));
+#endif
+ case TARGET_NR_setreuid:
+ return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
+ case TARGET_NR_setregid:
+ return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
+ case TARGET_NR_getgroups:
+ {
+ int gidsetsize = arg1;
+ target_id *target_grouplist;
+ gid_t *grouplist;
+ int i;
+
+ grouplist = alloca(gidsetsize * sizeof(gid_t));
+ ret = get_errno(getgroups(gidsetsize, grouplist));
+ if (gidsetsize == 0)
+ return ret;
+ if (!is_error(ret)) {
+ target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
+ if (!target_grouplist)
+ return -TARGET_EFAULT;
+ for(i = 0;i < ret; i++)
+ target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
+ unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
+ }
+ }
+ return ret;
+ case TARGET_NR_setgroups:
+ {
+ int gidsetsize = arg1;
+ target_id *target_grouplist;
+ gid_t *grouplist = NULL;
+ int i;
+ if (gidsetsize) {
+ grouplist = alloca(gidsetsize * sizeof(gid_t));
+ target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
+ if (!target_grouplist) {
+ return -TARGET_EFAULT;
+ }
+ for (i = 0; i < gidsetsize; i++) {
+ grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
+ }
+ unlock_user(target_grouplist, arg2, 0);
+ }
+ return get_errno(setgroups(gidsetsize, grouplist));
+ }
+ case TARGET_NR_fchown:
+ return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
+#if defined(TARGET_NR_fchownat)
+ case TARGET_NR_fchownat:
+ if (!(p = lock_user_string(arg2)))
+ return -TARGET_EFAULT;
+ ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
+ low2highgid(arg4), arg5));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_setresuid
+ case TARGET_NR_setresuid:
+ return get_errno(sys_setresuid(low2highuid(arg1),
+ low2highuid(arg2),
+ low2highuid(arg3)));
+#endif
+#ifdef TARGET_NR_getresuid
+ case TARGET_NR_getresuid:
+ {
+ uid_t ruid, euid, suid;
+ ret = get_errno(getresuid(&ruid, &euid, &suid));
+ if (!is_error(ret)) {
+ if (put_user_id(high2lowuid(ruid), arg1)
+ || put_user_id(high2lowuid(euid), arg2)
+ || put_user_id(high2lowuid(suid), arg3))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_getresgid
+ case TARGET_NR_setresgid:
+ return get_errno(sys_setresgid(low2highgid(arg1),
+ low2highgid(arg2),
+ low2highgid(arg3)));
+#endif
+#ifdef TARGET_NR_getresgid
+ case TARGET_NR_getresgid:
+ {
+ gid_t rgid, egid, sgid;
+ ret = get_errno(getresgid(&rgid, &egid, &sgid));
+ if (!is_error(ret)) {
+ if (put_user_id(high2lowgid(rgid), arg1)
+ || put_user_id(high2lowgid(egid), arg2)
+ || put_user_id(high2lowgid(sgid), arg3))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_chown
+ case TARGET_NR_chown:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+ case TARGET_NR_setuid:
+ return get_errno(sys_setuid(low2highuid(arg1)));
+ case TARGET_NR_setgid:
+ return get_errno(sys_setgid(low2highgid(arg1)));
+ case TARGET_NR_setfsuid:
+ return get_errno(setfsuid(arg1));
+ case TARGET_NR_setfsgid:
+ return get_errno(setfsgid(arg1));
+
+#ifdef TARGET_NR_lchown32
+ case TARGET_NR_lchown32:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(lchown(p, arg2, arg3));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_getuid32
+ case TARGET_NR_getuid32:
+ return get_errno(getuid());
+#endif
+
+#if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
+ /* Alpha specific */
+ case TARGET_NR_getxuid:
+ {
+ uid_t euid;
+ euid=geteuid();
+ ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
+ }
+ return get_errno(getuid());
+#endif
+#if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
+ /* Alpha specific */
+ case TARGET_NR_getxgid:
+ {
+ uid_t egid;
+ egid=getegid();
+ ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
+ }
+ return get_errno(getgid());
+#endif
+#if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
+ /* Alpha specific */
+ case TARGET_NR_osf_getsysinfo:
+ ret = -TARGET_EOPNOTSUPP;
+ switch (arg1) {
+ case TARGET_GSI_IEEE_FP_CONTROL:
+ {
+ uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
+ uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr;
+
+ swcr &= ~SWCR_STATUS_MASK;
+ swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
+
+ if (put_user_u64 (swcr, arg2))
+ return -TARGET_EFAULT;
+ ret = 0;
+ }
+ break;
+
+ /* case GSI_IEEE_STATE_AT_SIGNAL:
+ -- Not implemented in linux kernel.
+ case GSI_UACPROC:
+ -- Retrieves current unaligned access state; not much used.
+ case GSI_PROC_TYPE:
+ -- Retrieves implver information; surely not used.
+ case GSI_GET_HWRPB:
+ -- Grabs a copy of the HWRPB; surely not used.
+ */
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
+ /* Alpha specific */
+ case TARGET_NR_osf_setsysinfo:
+ ret = -TARGET_EOPNOTSUPP;
+ switch (arg1) {
+ case TARGET_SSI_IEEE_FP_CONTROL:
+ {
+ uint64_t swcr, fpcr;
+
+ if (get_user_u64 (swcr, arg2)) {
+ return -TARGET_EFAULT;
+ }
+
+ /*
+ * The kernel calls swcr_update_status to update the
+ * status bits from the fpcr at every point that it
+ * could be queried. Therefore, we store the status
+ * bits only in FPCR.
+ */
+ ((CPUAlphaState *)cpu_env)->swcr
+ = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
+
+ fpcr = cpu_alpha_load_fpcr(cpu_env);
+ fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
+ fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
+ cpu_alpha_store_fpcr(cpu_env, fpcr);
+ ret = 0;
+ }
+ break;
+
+ case TARGET_SSI_IEEE_RAISE_EXCEPTION:
+ {
+ uint64_t exc, fpcr, fex;
+
+ if (get_user_u64(exc, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ exc &= SWCR_STATUS_MASK;
+ fpcr = cpu_alpha_load_fpcr(cpu_env);
+
+ /* Old exceptions are not signaled. */
+ fex = alpha_ieee_fpcr_to_swcr(fpcr);
+ fex = exc & ~fex;
+ fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
+ fex &= ((CPUArchState *)cpu_env)->swcr;
+
+ /* Update the hardware fpcr. */
+ fpcr |= alpha_ieee_swcr_to_fpcr(exc);
+ cpu_alpha_store_fpcr(cpu_env, fpcr);
+
+ if (fex) {
+ int si_code = TARGET_FPE_FLTUNK;
+ target_siginfo_t info;
+
+ if (fex & SWCR_TRAP_ENABLE_DNO) {
+ si_code = TARGET_FPE_FLTUND;
+ }
+ if (fex & SWCR_TRAP_ENABLE_INE) {
+ si_code = TARGET_FPE_FLTRES;
+ }
+ if (fex & SWCR_TRAP_ENABLE_UNF) {
+ si_code = TARGET_FPE_FLTUND;
+ }
+ if (fex & SWCR_TRAP_ENABLE_OVF) {
+ si_code = TARGET_FPE_FLTOVF;
+ }
+ if (fex & SWCR_TRAP_ENABLE_DZE) {
+ si_code = TARGET_FPE_FLTDIV;
+ }
+ if (fex & SWCR_TRAP_ENABLE_INV) {
+ si_code = TARGET_FPE_FLTINV;
+ }
+
+ info.si_signo = SIGFPE;
+ info.si_errno = 0;
+ info.si_code = si_code;
+ info._sifields._sigfault._addr
+ = ((CPUArchState *)cpu_env)->pc;
+ queue_signal((CPUArchState *)cpu_env, info.si_signo,
+ QEMU_SI_FAULT, &info);
+ }
+ ret = 0;
+ }
+ break;
+
+ /* case SSI_NVPAIRS:
+ -- Used with SSIN_UACPROC to enable unaligned accesses.
+ case SSI_IEEE_STATE_AT_SIGNAL:
+ case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
+ -- Not implemented in linux kernel
+ */
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_osf_sigprocmask
+ /* Alpha specific. */
+ case TARGET_NR_osf_sigprocmask:
+ {
+ abi_ulong mask;
+ int how;
+ sigset_t set, oldset;
+
+ switch(arg1) {
+ case TARGET_SIG_BLOCK:
+ how = SIG_BLOCK;
+ break;
+ case TARGET_SIG_UNBLOCK:
+ how = SIG_UNBLOCK;
+ break;
+ case TARGET_SIG_SETMASK:
+ how = SIG_SETMASK;
+ break;
+ default:
+ return -TARGET_EINVAL;
+ }
+ mask = arg2;
+ target_to_host_old_sigset(&set, &mask);
+ ret = do_sigprocmask(how, &set, &oldset);
+ if (!ret) {
+ host_to_target_old_sigset(&mask, &oldset);
+ ret = mask;
+ }
+ }
+ return ret;
+#endif
+
+#ifdef TARGET_NR_getgid32
+ case TARGET_NR_getgid32:
+ return get_errno(getgid());
+#endif
+#ifdef TARGET_NR_geteuid32
+ case TARGET_NR_geteuid32:
+ return get_errno(geteuid());
+#endif
+#ifdef TARGET_NR_getegid32
+ case TARGET_NR_getegid32:
+ return get_errno(getegid());
+#endif
+#ifdef TARGET_NR_setreuid32
+ case TARGET_NR_setreuid32:
+ return get_errno(setreuid(arg1, arg2));
+#endif
+#ifdef TARGET_NR_setregid32
+ case TARGET_NR_setregid32:
+ return get_errno(setregid(arg1, arg2));
+#endif
+#ifdef TARGET_NR_getgroups32
+ case TARGET_NR_getgroups32:
+ {
+ int gidsetsize = arg1;
+ uint32_t *target_grouplist;
+ gid_t *grouplist;
+ int i;
+
+ grouplist = alloca(gidsetsize * sizeof(gid_t));
+ ret = get_errno(getgroups(gidsetsize, grouplist));
+ if (gidsetsize == 0)
+ return ret;
+ if (!is_error(ret)) {
+ target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
+ if (!target_grouplist) {
+ return -TARGET_EFAULT;
+ }
+ for(i = 0;i < ret; i++)
+ target_grouplist[i] = tswap32(grouplist[i]);
+ unlock_user(target_grouplist, arg2, gidsetsize * 4);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_setgroups32
+ case TARGET_NR_setgroups32:
+ {
+ int gidsetsize = arg1;
+ uint32_t *target_grouplist;
+ gid_t *grouplist;
+ int i;
+
+ grouplist = alloca(gidsetsize * sizeof(gid_t));
+ target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
+ if (!target_grouplist) {
+ return -TARGET_EFAULT;
+ }
+ for(i = 0;i < gidsetsize; i++)
+ grouplist[i] = tswap32(target_grouplist[i]);
+ unlock_user(target_grouplist, arg2, 0);
+ return get_errno(setgroups(gidsetsize, grouplist));
+ }
+#endif
+#ifdef TARGET_NR_fchown32
+ case TARGET_NR_fchown32:
+ return get_errno(fchown(arg1, arg2, arg3));
+#endif
+#ifdef TARGET_NR_setresuid32
+ case TARGET_NR_setresuid32:
+ return get_errno(sys_setresuid(arg1, arg2, arg3));
+#endif
+#ifdef TARGET_NR_getresuid32
+ case TARGET_NR_getresuid32:
+ {
+ uid_t ruid, euid, suid;
+ ret = get_errno(getresuid(&ruid, &euid, &suid));
+ if (!is_error(ret)) {
+ if (put_user_u32(ruid, arg1)
+ || put_user_u32(euid, arg2)
+ || put_user_u32(suid, arg3))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_setresgid32
+ case TARGET_NR_setresgid32:
+ return get_errno(sys_setresgid(arg1, arg2, arg3));
+#endif
+#ifdef TARGET_NR_getresgid32
+ case TARGET_NR_getresgid32:
+ {
+ gid_t rgid, egid, sgid;
+ ret = get_errno(getresgid(&rgid, &egid, &sgid));
+ if (!is_error(ret)) {
+ if (put_user_u32(rgid, arg1)
+ || put_user_u32(egid, arg2)
+ || put_user_u32(sgid, arg3))
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_chown32
+ case TARGET_NR_chown32:
+ if (!(p = lock_user_string(arg1)))
+ return -TARGET_EFAULT;
+ ret = get_errno(chown(p, arg2, arg3));
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#ifdef TARGET_NR_setuid32
+ case TARGET_NR_setuid32:
+ return get_errno(sys_setuid(arg1));
+#endif
+#ifdef TARGET_NR_setgid32
+ case TARGET_NR_setgid32:
+ return get_errno(sys_setgid(arg1));
+#endif
+#ifdef TARGET_NR_setfsuid32
+ case TARGET_NR_setfsuid32:
+ return get_errno(setfsuid(arg1));
+#endif
+#ifdef TARGET_NR_setfsgid32
+ case TARGET_NR_setfsgid32:
+ return get_errno(setfsgid(arg1));
+#endif
+#ifdef TARGET_NR_mincore
+ case TARGET_NR_mincore:
+ {
+ void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
+ if (!a) {
+ return -TARGET_ENOMEM;
+ }
+ p = lock_user_string(arg3);
+ if (!p) {
+ ret = -TARGET_EFAULT;
+ } else {
+ ret = get_errno(mincore(a, arg2, p));
+ unlock_user(p, arg3, ret);
+ }
+ unlock_user(a, arg1, 0);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_arm_fadvise64_64
+ case TARGET_NR_arm_fadvise64_64:
+ /* arm_fadvise64_64 looks like fadvise64_64 but
+ * with different argument order: fd, advice, offset, len
+ * rather than the usual fd, offset, len, advice.
+ * Note that offset and len are both 64-bit so appear as
+ * pairs of 32-bit registers.
+ */
+ ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
+ target_offset64(arg5, arg6), arg2);
+ return -host_to_target_errno(ret);
+#endif
+
+#if TARGET_ABI_BITS == 32
+
+#ifdef TARGET_NR_fadvise64_64
+ case TARGET_NR_fadvise64_64:
+#if defined(TARGET_PPC) || defined(TARGET_XTENSA)
+ /* 6 args: fd, advice, offset (high, low), len (high, low) */
+ ret = arg2;
+ arg2 = arg3;
+ arg3 = arg4;
+ arg4 = arg5;
+ arg5 = arg6;
+ arg6 = ret;
+#else
+ /* 6 args: fd, offset (high, low), len (high, low), advice */
+ if (regpairs_aligned(cpu_env, num)) {
+ /* offset is in (3,4), len in (5,6) and advice in 7 */
+ arg2 = arg3;
+ arg3 = arg4;
+ arg4 = arg5;
+ arg5 = arg6;
+ arg6 = arg7;
+ }
+#endif
+ ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
+ target_offset64(arg4, arg5), arg6);
+ return -host_to_target_errno(ret);
+#endif
+
+#ifdef TARGET_NR_fadvise64
+ case TARGET_NR_fadvise64:
+ /* 5 args: fd, offset (high, low), len, advice */
+ if (regpairs_aligned(cpu_env, num)) {
+ /* offset is in (3,4), len in 5 and advice in 6 */
+ arg2 = arg3;
+ arg3 = arg4;
+ arg4 = arg5;
+ arg5 = arg6;
+ }
+ ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
+ return -host_to_target_errno(ret);
+#endif
+
+#else /* not a 32-bit ABI */
+#if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
+#ifdef TARGET_NR_fadvise64_64
+ case TARGET_NR_fadvise64_64:
+#endif
+#ifdef TARGET_NR_fadvise64
+ case TARGET_NR_fadvise64:
+#endif
+#ifdef TARGET_S390X
+ switch (arg4) {
+ case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
+ case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
+ case 6: arg4 = POSIX_FADV_DONTNEED; break;
+ case 7: arg4 = POSIX_FADV_NOREUSE; break;
+ default: break;
+ }
+#endif
+ return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
+#endif
+#endif /* end of 64-bit ABI fadvise handling */
+
+#ifdef TARGET_NR_madvise
+ case TARGET_NR_madvise:
+ /* A straight passthrough may not be safe because qemu sometimes
+ turns private file-backed mappings into anonymous mappings.
+ This will break MADV_DONTNEED.
+ This is a hint, so ignoring and returning success is ok. */
+ return 0;
+#endif
+#ifdef TARGET_NR_fcntl64
+ case TARGET_NR_fcntl64:
+ {
+ int cmd;
+ struct flock64 fl;
+ from_flock64_fn *copyfrom = copy_from_user_flock64;
+ to_flock64_fn *copyto = copy_to_user_flock64;
+
+#ifdef TARGET_ARM
+ if (!((CPUARMState *)cpu_env)->eabi) {
+ copyfrom = copy_from_user_oabi_flock64;
+ copyto = copy_to_user_oabi_flock64;
+ }
+#endif
+
+ cmd = target_to_host_fcntl_cmd(arg2);
+ if (cmd == -TARGET_EINVAL) {
+ return cmd;
+ }
+
+ switch(arg2) {
+ case TARGET_F_GETLK64:
+ ret = copyfrom(&fl, arg3);
+ if (ret) {
+ break;
+ }
+ ret = get_errno(safe_fcntl(arg1, cmd, &fl));
+ if (ret == 0) {
+ ret = copyto(arg3, &fl);
+ }
+ break;
+
+ case TARGET_F_SETLK64:
+ case TARGET_F_SETLKW64:
+ ret = copyfrom(&fl, arg3);
+ if (ret) {
+ break;
+ }
+ ret = get_errno(safe_fcntl(arg1, cmd, &fl));
+ break;
+ default:
+ ret = do_fcntl(arg1, arg2, arg3);
+ break;
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_cacheflush
+ case TARGET_NR_cacheflush:
+ /* self-modifying code is handled automatically, so nothing needed */
+ return 0;
+#endif
+#ifdef TARGET_NR_getpagesize
+ case TARGET_NR_getpagesize:
+ return TARGET_PAGE_SIZE;
+#endif
+ case TARGET_NR_gettid:
+ return get_errno(sys_gettid());
+#ifdef TARGET_NR_readahead
+ case TARGET_NR_readahead:
+#if TARGET_ABI_BITS == 32
+ if (regpairs_aligned(cpu_env, num)) {
+ arg2 = arg3;
+ arg3 = arg4;
+ arg4 = arg5;
+ }
+ ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
+#else
+ ret = get_errno(readahead(arg1, arg2, arg3));
+#endif
+ return ret;
+#endif
+#ifdef CONFIG_ATTR
+#ifdef TARGET_NR_setxattr
+ case TARGET_NR_listxattr:
+ case TARGET_NR_llistxattr:
+ {
+ void *p, *b = 0;
+ if (arg2) {
+ b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!b) {
+ return -TARGET_EFAULT;
+ }
+ }
+ p = lock_user_string(arg1);
+ if (p) {
+ if (num == TARGET_NR_listxattr) {
+ ret = get_errno(listxattr(p, b, arg3));
+ } else {
+ ret = get_errno(llistxattr(p, b, arg3));
+ }
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(p, arg1, 0);
+ unlock_user(b, arg2, arg3);
+ return ret;
+ }
+ case TARGET_NR_flistxattr:
+ {
+ void *b = 0;
+ if (arg2) {
+ b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+ if (!b) {
+ return -TARGET_EFAULT;
+ }
+ }
+ ret = get_errno(flistxattr(arg1, b, arg3));
+ unlock_user(b, arg2, arg3);
+ return ret;
+ }
+ case TARGET_NR_setxattr:
+ case TARGET_NR_lsetxattr:
+ {
+ void *p, *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_READ, arg3, arg4, 1);
+ if (!v) {
+ return -TARGET_EFAULT;
+ }
+ }
+ p = lock_user_string(arg1);
+ n = lock_user_string(arg2);
+ if (p && n) {
+ if (num == TARGET_NR_setxattr) {
+ ret = get_errno(setxattr(p, n, v, arg4, arg5));
+ } else {
+ ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
+ }
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(p, arg1, 0);
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, 0);
+ }
+ return ret;
+ case TARGET_NR_fsetxattr:
+ {
+ void *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_READ, arg3, arg4, 1);
+ if (!v) {
+ return -TARGET_EFAULT;
+ }
+ }
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, 0);
+ }
+ return ret;
+ case TARGET_NR_getxattr:
+ case TARGET_NR_lgetxattr:
+ {
+ void *p, *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+ if (!v) {
+ return -TARGET_EFAULT;
+ }
+ }
+ p = lock_user_string(arg1);
+ n = lock_user_string(arg2);
+ if (p && n) {
+ if (num == TARGET_NR_getxattr) {
+ ret = get_errno(getxattr(p, n, v, arg4));
+ } else {
+ ret = get_errno(lgetxattr(p, n, v, arg4));
+ }
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(p, arg1, 0);
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, arg4);
+ }
+ return ret;
+ case TARGET_NR_fgetxattr:
+ {
+ void *n, *v = 0;
+ if (arg3) {
+ v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
+ if (!v) {
+ return -TARGET_EFAULT;
+ }
+ }
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fgetxattr(arg1, n, v, arg4));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ unlock_user(v, arg3, arg4);
+ }
+ return ret;
+ case TARGET_NR_removexattr:
+ case TARGET_NR_lremovexattr:
+ {
+ void *p, *n;
+ p = lock_user_string(arg1);
+ n = lock_user_string(arg2);
+ if (p && n) {
+ if (num == TARGET_NR_removexattr) {
+ ret = get_errno(removexattr(p, n));
+ } else {
+ ret = get_errno(lremovexattr(p, n));
+ }
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(p, arg1, 0);
+ unlock_user(n, arg2, 0);
+ }
+ return ret;
+ case TARGET_NR_fremovexattr:
+ {
+ void *n;
+ n = lock_user_string(arg2);
+ if (n) {
+ ret = get_errno(fremovexattr(arg1, n));
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ unlock_user(n, arg2, 0);
+ }
+ return ret;
+#endif
+#endif /* CONFIG_ATTR */
+#ifdef TARGET_NR_set_thread_area
+ case TARGET_NR_set_thread_area:
+#if defined(TARGET_MIPS)
+ ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
+ return 0;
+#elif defined(TARGET_CRIS)
+ if (arg1 & 0xff)
+ ret = -TARGET_EINVAL;
+ else {
+ ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
+ ret = 0;
+ }
+ return ret;
+#elif defined(TARGET_I386) && defined(TARGET_ABI32)
+ return do_set_thread_area(cpu_env, arg1);
+#elif defined(TARGET_M68K)
+ {
+ TaskState *ts = cpu->opaque;
+ ts->tp_value = arg1;
+ return 0;
+ }
+#else
+ return -TARGET_ENOSYS;
+#endif
+#endif
+#ifdef TARGET_NR_get_thread_area
+ case TARGET_NR_get_thread_area:
+#if defined(TARGET_I386) && defined(TARGET_ABI32)
+ return do_get_thread_area(cpu_env, arg1);
+#elif defined(TARGET_M68K)
+ {
+ TaskState *ts = cpu->opaque;
+ return ts->tp_value;
+ }
+#else
+ return -TARGET_ENOSYS;
+#endif
+#endif
+#ifdef TARGET_NR_getdomainname
+ case TARGET_NR_getdomainname:
+ return -TARGET_ENOSYS;
+#endif
+
+#ifdef TARGET_NR_clock_settime
+ case TARGET_NR_clock_settime:
+ {
+ struct timespec ts;
+
+ ret = target_to_host_timespec(&ts, arg2);
+ if (!is_error(ret)) {
+ ret = get_errno(clock_settime(arg1, &ts));
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_settime64
+ case TARGET_NR_clock_settime64:
+ {
+ struct timespec ts;
+
+ ret = target_to_host_timespec64(&ts, arg2);
+ if (!is_error(ret)) {
+ ret = get_errno(clock_settime(arg1, &ts));
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_gettime
+ case TARGET_NR_clock_gettime:
+ {
+ struct timespec ts;
+ ret = get_errno(clock_gettime(arg1, &ts));
+ if (!is_error(ret)) {
+ ret = host_to_target_timespec(arg2, &ts);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_gettime64
+ case TARGET_NR_clock_gettime64:
+ {
+ struct timespec ts;
+ ret = get_errno(clock_gettime(arg1, &ts));
+ if (!is_error(ret)) {
+ ret = host_to_target_timespec64(arg2, &ts);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_getres
+ case TARGET_NR_clock_getres:
+ {
+ struct timespec ts;
+ ret = get_errno(clock_getres(arg1, &ts));
+ if (!is_error(ret)) {
+ host_to_target_timespec(arg2, &ts);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_getres_time64
+ case TARGET_NR_clock_getres_time64:
+ {
+ struct timespec ts;
+ ret = get_errno(clock_getres(arg1, &ts));
+ if (!is_error(ret)) {
+ host_to_target_timespec64(arg2, &ts);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_nanosleep
+ case TARGET_NR_clock_nanosleep:
+ {
+ struct timespec ts;
+ if (target_to_host_timespec(&ts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_clock_nanosleep(arg1, arg2,
+ &ts, arg4 ? &ts : NULL));
+ /*
+ * if the call is interrupted by a signal handler, it fails
+ * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not
+ * TIMER_ABSTIME, it returns the remaining unslept time in arg4.
+ */
+ if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
+ host_to_target_timespec(arg4, &ts)) {
+ return -TARGET_EFAULT;
+ }
+
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_clock_nanosleep_time64
+ case TARGET_NR_clock_nanosleep_time64:
+ {
+ struct timespec ts;
+
+ if (target_to_host_timespec64(&ts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+
+ ret = get_errno(safe_clock_nanosleep(arg1, arg2,
+ &ts, arg4 ? &ts : NULL));
+
+ if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
+ host_to_target_timespec64(arg4, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ return ret;
+ }
+#endif
+
+#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
+ case TARGET_NR_set_tid_address:
+ return get_errno(set_tid_address((int *)g2h(cpu, arg1)));
+#endif
+
+ case TARGET_NR_tkill:
+ return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
+
+ case TARGET_NR_tgkill:
+ return get_errno(safe_tgkill((int)arg1, (int)arg2,
+ target_to_host_signal(arg3)));
+
+#ifdef TARGET_NR_set_robust_list
+ case TARGET_NR_set_robust_list:
+ case TARGET_NR_get_robust_list:
+ /* The ABI for supporting robust futexes has userspace pass
+ * the kernel a pointer to a linked list which is updated by
+ * userspace after the syscall; the list is walked by the kernel
+ * when the thread exits. Since the linked list in QEMU guest
+ * memory isn't a valid linked list for the host and we have
+ * no way to reliably intercept the thread-death event, we can't
+ * support these. Silently return ENOSYS so that guest userspace
+ * falls back to a non-robust futex implementation (which should
+ * be OK except in the corner case of the guest crashing while
+ * holding a mutex that is shared with another process via
+ * shared memory).
+ */
+ return -TARGET_ENOSYS;
+#endif
+
+#if defined(TARGET_NR_utimensat)
+ case TARGET_NR_utimensat:
+ {
+ struct timespec *tsp, ts[2];
+ if (!arg3) {
+ tsp = NULL;
+ } else {
+ if (target_to_host_timespec(ts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ if (target_to_host_timespec(ts + 1, arg3 +
+ sizeof(struct target_timespec))) {
+ return -TARGET_EFAULT;
+ }
+ tsp = ts;
+ }
+ if (!arg2)
+ ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
+ else {
+ if (!(p = lock_user_string(arg2))) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
+ unlock_user(p, arg2, 0);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_utimensat_time64
+ case TARGET_NR_utimensat_time64:
+ {
+ struct timespec *tsp, ts[2];
+ if (!arg3) {
+ tsp = NULL;
+ } else {
+ if (target_to_host_timespec64(ts, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ if (target_to_host_timespec64(ts + 1, arg3 +
+ sizeof(struct target__kernel_timespec))) {
+ return -TARGET_EFAULT;
+ }
+ tsp = ts;
+ }
+ if (!arg2)
+ ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
+ else {
+ p = lock_user_string(arg2);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
+ unlock_user(p, arg2, 0);
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_futex
+ case TARGET_NR_futex:
+ return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
+#endif
+#ifdef TARGET_NR_futex_time64
+ case TARGET_NR_futex_time64:
+ return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
+#endif
+#if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
+ case TARGET_NR_inotify_init:
+ ret = get_errno(sys_inotify_init());
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_inotify_trans);
+ }
+ return ret;
+#endif
+#ifdef CONFIG_INOTIFY1
+#if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
+ case TARGET_NR_inotify_init1:
+ ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
+ fcntl_flags_tbl)));
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_inotify_trans);
+ }
+ return ret;
+#endif
+#endif
+#if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
+ case TARGET_NR_inotify_add_watch:
+ p = lock_user_string(arg2);
+ ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
+ unlock_user(p, arg2, 0);
+ return ret;
+#endif
+#if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
+ case TARGET_NR_inotify_rm_watch:
+ return get_errno(sys_inotify_rm_watch(arg1, arg2));
+#endif
+
+#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
+ case TARGET_NR_mq_open:
+ {
+ struct mq_attr posix_mq_attr;
+ struct mq_attr *pposix_mq_attr;
+ int host_flags;
+
+ host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
+ pposix_mq_attr = NULL;
+ if (arg4) {
+ if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
+ return -TARGET_EFAULT;
+ }
+ pposix_mq_attr = &posix_mq_attr;
+ }
+ p = lock_user_string(arg1 - 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
+ unlock_user (p, arg1, 0);
+ }
+ return ret;
+
+ case TARGET_NR_mq_unlink:
+ p = lock_user_string(arg1 - 1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(mq_unlink(p));
+ unlock_user (p, arg1, 0);
+ return ret;
+
+#ifdef TARGET_NR_mq_timedsend
+ case TARGET_NR_mq_timedsend:
+ {
+ struct timespec ts;
+
+ p = lock_user (VERIFY_READ, arg2, arg3, 1);
+ if (arg5 != 0) {
+ if (target_to_host_timespec(&ts, arg5)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
+ if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
+ }
+ unlock_user (p, arg2, arg3);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_mq_timedsend_time64
+ case TARGET_NR_mq_timedsend_time64:
+ {
+ struct timespec ts;
+
+ p = lock_user(VERIFY_READ, arg2, arg3, 1);
+ if (arg5 != 0) {
+ if (target_to_host_timespec64(&ts, arg5)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
+ if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
+ }
+ unlock_user(p, arg2, arg3);
+ }
+ return ret;
+#endif
+
+#ifdef TARGET_NR_mq_timedreceive
+ case TARGET_NR_mq_timedreceive:
+ {
+ struct timespec ts;
+ unsigned int prio;
+
+ p = lock_user (VERIFY_READ, arg2, arg3, 1);
+ if (arg5 != 0) {
+ if (target_to_host_timespec(&ts, arg5)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
+ &prio, &ts));
+ if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
+ &prio, NULL));
+ }
+ unlock_user (p, arg2, arg3);
+ if (arg4 != 0)
+ put_user_u32(prio, arg4);
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_mq_timedreceive_time64
+ case TARGET_NR_mq_timedreceive_time64:
+ {
+ struct timespec ts;
+ unsigned int prio;
+
+ p = lock_user(VERIFY_READ, arg2, arg3, 1);
+ if (arg5 != 0) {
+ if (target_to_host_timespec64(&ts, arg5)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
+ &prio, &ts));
+ if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
+ return -TARGET_EFAULT;
+ }
+ } else {
+ ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
+ &prio, NULL));
+ }
+ unlock_user(p, arg2, arg3);
+ if (arg4 != 0) {
+ put_user_u32(prio, arg4);
+ }
+ }
+ return ret;
+#endif
+
+ /* Not implemented for now... */
+/* case TARGET_NR_mq_notify: */
+/* break; */
+
+ case TARGET_NR_mq_getsetattr:
+ {
+ struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
+ ret = 0;
+ if (arg2 != 0) {
+ copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
+ ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
+ &posix_mq_attr_out));
+ } else if (arg3 != 0) {
+ ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
+ }
+ if (ret == 0 && arg3 != 0) {
+ copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
+ }
+ }
+ return ret;
+#endif
+
+#ifdef CONFIG_SPLICE
+#ifdef TARGET_NR_tee
+ case TARGET_NR_tee:
+ {
+ ret = get_errno(tee(arg1,arg2,arg3,arg4));
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_splice
+ case TARGET_NR_splice:
+ {
+ loff_t loff_in, loff_out;
+ loff_t *ploff_in = NULL, *ploff_out = NULL;
+ if (arg2) {
+ if (get_user_u64(loff_in, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ ploff_in = &loff_in;
+ }
+ if (arg4) {
+ if (get_user_u64(loff_out, arg4)) {
+ return -TARGET_EFAULT;
+ }
+ ploff_out = &loff_out;
+ }
+ ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
+ if (arg2) {
+ if (put_user_u64(loff_in, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ if (arg4) {
+ if (put_user_u64(loff_out, arg4)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+#endif
+#ifdef TARGET_NR_vmsplice
+ case TARGET_NR_vmsplice:
+ {
+ struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
+ if (vec != NULL) {
+ ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
+ unlock_iovec(vec, arg2, arg3, 0);
+ } else {
+ ret = -host_to_target_errno(errno);
+ }
+ }
+ return ret;
+#endif
+#endif /* CONFIG_SPLICE */
+#ifdef CONFIG_EVENTFD
+#if defined(TARGET_NR_eventfd)
+ case TARGET_NR_eventfd:
+ ret = get_errno(eventfd(arg1, 0));
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_eventfd_trans);
+ }
+ return ret;
+#endif
+#if defined(TARGET_NR_eventfd2)
+ case TARGET_NR_eventfd2:
+ {
+ int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC));
+ if (arg2 & TARGET_O_NONBLOCK) {
+ host_flags |= O_NONBLOCK;
+ }
+ if (arg2 & TARGET_O_CLOEXEC) {
+ host_flags |= O_CLOEXEC;
+ }
+ ret = get_errno(eventfd(arg1, host_flags));
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_eventfd_trans);
+ }
+ return ret;
+ }
+#endif
+#endif /* CONFIG_EVENTFD */
+#if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
+ case TARGET_NR_fallocate:
+#if TARGET_ABI_BITS == 32
+ ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
+ target_offset64(arg5, arg6)));
+#else
+ ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
+#endif
+ return ret;
+#endif
+#if defined(CONFIG_SYNC_FILE_RANGE)
+#if defined(TARGET_NR_sync_file_range)
+ case TARGET_NR_sync_file_range:
+#if TARGET_ABI_BITS == 32
+#if defined(TARGET_MIPS)
+ ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
+ target_offset64(arg5, arg6), arg7));
+#else
+ ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
+ target_offset64(arg4, arg5), arg6));
+#endif /* !TARGET_MIPS */
+#else
+ ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
+#endif
+ return ret;
+#endif
+#if defined(TARGET_NR_sync_file_range2) || \
+ defined(TARGET_NR_arm_sync_file_range)
+#if defined(TARGET_NR_sync_file_range2)
+ case TARGET_NR_sync_file_range2:
+#endif
+#if defined(TARGET_NR_arm_sync_file_range)
+ case TARGET_NR_arm_sync_file_range:
+#endif
+ /* This is like sync_file_range but the arguments are reordered */
+#if TARGET_ABI_BITS == 32
+ ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
+ target_offset64(arg5, arg6), arg2));
+#else
+ ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
+#endif
+ return ret;
+#endif
+#endif
+#if defined(TARGET_NR_signalfd4)
+ case TARGET_NR_signalfd4:
+ return do_signalfd4(arg1, arg2, arg4);
+#endif
+#if defined(TARGET_NR_signalfd)
+ case TARGET_NR_signalfd:
+ return do_signalfd4(arg1, arg2, 0);
+#endif
+#if defined(CONFIG_EPOLL)
+#if defined(TARGET_NR_epoll_create)
+ case TARGET_NR_epoll_create:
+ return get_errno(epoll_create(arg1));
+#endif
+#if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
+ case TARGET_NR_epoll_create1:
+ return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
+#endif
+#if defined(TARGET_NR_epoll_ctl)
+ case TARGET_NR_epoll_ctl:
+ {
+ struct epoll_event ep;
+ struct epoll_event *epp = 0;
+ if (arg4) {
+ if (arg2 != EPOLL_CTL_DEL) {
+ struct target_epoll_event *target_ep;
+ if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
+ return -TARGET_EFAULT;
+ }
+ ep.events = tswap32(target_ep->events);
+ /*
+ * The epoll_data_t union is just opaque data to the kernel,
+ * so we transfer all 64 bits across and need not worry what
+ * actual data type it is.
+ */
+ ep.data.u64 = tswap64(target_ep->data.u64);
+ unlock_user_struct(target_ep, arg4, 0);
+ }
+ /*
+ * before kernel 2.6.9, EPOLL_CTL_DEL operation required a
+ * non-null pointer, even though this argument is ignored.
+ *
+ */
+ epp = &ep;
+ }
+ return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
+ }
+#endif
+
+#if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
+#if defined(TARGET_NR_epoll_wait)
+ case TARGET_NR_epoll_wait:
+#endif
+#if defined(TARGET_NR_epoll_pwait)
+ case TARGET_NR_epoll_pwait:
+#endif
+ {
+ struct target_epoll_event *target_ep;
+ struct epoll_event *ep;
+ int epfd = arg1;
+ int maxevents = arg3;
+ int timeout = arg4;
+
+ if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
+ return -TARGET_EINVAL;
+ }
+
+ target_ep = lock_user(VERIFY_WRITE, arg2,
+ maxevents * sizeof(struct target_epoll_event), 1);
+ if (!target_ep) {
+ return -TARGET_EFAULT;
+ }
+
+ ep = g_try_new(struct epoll_event, maxevents);
+ if (!ep) {
+ unlock_user(target_ep, arg2, 0);
+ return -TARGET_ENOMEM;
+ }
+
+ switch (num) {
+#if defined(TARGET_NR_epoll_pwait)
+ case TARGET_NR_epoll_pwait:
+ {
+ target_sigset_t *target_set;
+ sigset_t _set, *set = &_set;
+
+ if (arg5) {
+ if (arg6 != sizeof(target_sigset_t)) {
+ ret = -TARGET_EINVAL;
+ break;
+ }
+
+ target_set = lock_user(VERIFY_READ, arg5,
+ sizeof(target_sigset_t), 1);
+ if (!target_set) {
+ ret = -TARGET_EFAULT;
+ break;
+ }
+ target_to_host_sigset(set, target_set);
+ unlock_user(target_set, arg5, 0);
+ } else {
+ set = NULL;
+ }
+
+ ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
+ set, SIGSET_T_SIZE));
+ break;
+ }
+#endif
+#if defined(TARGET_NR_epoll_wait)
+ case TARGET_NR_epoll_wait:
+ ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
+ NULL, 0));
+ break;
+#endif
+ default:
+ ret = -TARGET_ENOSYS;
+ }
+ if (!is_error(ret)) {
+ int i;
+ for (i = 0; i < ret; i++) {
+ target_ep[i].events = tswap32(ep[i].events);
+ target_ep[i].data.u64 = tswap64(ep[i].data.u64);
+ }
+ unlock_user(target_ep, arg2,
+ ret * sizeof(struct target_epoll_event));
+ } else {
+ unlock_user(target_ep, arg2, 0);
+ }
+ g_free(ep);
+ return ret;
+ }
+#endif
+#endif
+#ifdef TARGET_NR_prlimit64
+ case TARGET_NR_prlimit64:
+ {
+ /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
+ struct target_rlimit64 *target_rnew, *target_rold;
+ struct host_rlimit64 rnew, rold, *rnewp = 0;
+ int resource = target_to_host_resource(arg2);
+
+ if (arg3 && (resource != RLIMIT_AS &&
+ resource != RLIMIT_DATA &&
+ resource != RLIMIT_STACK)) {
+ if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
+ return -TARGET_EFAULT;
+ }
+ rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
+ rnew.rlim_max = tswap64(target_rnew->rlim_max);
+ unlock_user_struct(target_rnew, arg3, 0);
+ rnewp = &rnew;
+ }
+
+ ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
+ if (!is_error(ret) && arg4) {
+ if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
+ return -TARGET_EFAULT;
+ }
+ target_rold->rlim_cur = tswap64(rold.rlim_cur);
+ target_rold->rlim_max = tswap64(rold.rlim_max);
+ unlock_user_struct(target_rold, arg4, 1);
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_gethostname
+ case TARGET_NR_gethostname:
+ {
+ char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
+ if (name) {
+ ret = get_errno(gethostname(name, arg2));
+ unlock_user(name, arg1, arg2);
+ } else {
+ ret = -TARGET_EFAULT;
+ }
+ return ret;
+ }
+#endif
+#ifdef TARGET_NR_atomic_cmpxchg_32
+ case TARGET_NR_atomic_cmpxchg_32:
+ {
+ /* should use start_exclusive from main.c */
+ abi_ulong mem_value;
+ if (get_user_u32(mem_value, arg6)) {
+ target_siginfo_t info;
+ info.si_signo = SIGSEGV;
+ info.si_errno = 0;
+ info.si_code = TARGET_SEGV_MAPERR;
+ info._sifields._sigfault._addr = arg6;
+ queue_signal((CPUArchState *)cpu_env, info.si_signo,
+ QEMU_SI_FAULT, &info);
+ ret = 0xdeadbeef;
+
+ }
+ if (mem_value == arg2)
+ put_user_u32(arg1, arg6);
+ return mem_value;
+ }
+#endif
+#ifdef TARGET_NR_atomic_barrier
+ case TARGET_NR_atomic_barrier:
+ /* Like the kernel implementation and the
+ qemu arm barrier, no-op this? */
+ return 0;
+#endif
+
+#ifdef TARGET_NR_timer_create
+ case TARGET_NR_timer_create:
+ {
+ /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
+
+ struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
+
+ int clkid = arg1;
+ int timer_index = next_free_host_timer();
+
+ if (timer_index < 0) {
+ ret = -TARGET_EAGAIN;
+ } else {
+ timer_t *phtimer = g_posix_timers + timer_index;
+
+ if (arg2) {
+ phost_sevp = &host_sevp;
+ ret = target_to_host_sigevent(phost_sevp, arg2);
+ if (ret != 0) {
+ return ret;
+ }
+ }
+
+ ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
+ if (ret) {
+ phtimer = NULL;
+ } else {
+ if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_settime
+ case TARGET_NR_timer_settime:
+ {
+ /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
+ * struct itimerspec * old_value */
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else if (arg3 == 0) {
+ ret = -TARGET_EINVAL;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
+
+ if (target_to_host_itimerspec(&hspec_new, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(
+ timer_settime(htimer, arg2, &hspec_new, &hspec_old));
+ if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_settime64
+ case TARGET_NR_timer_settime64:
+ {
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else if (arg3 == 0) {
+ ret = -TARGET_EINVAL;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
+
+ if (target_to_host_itimerspec64(&hspec_new, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(
+ timer_settime(htimer, arg2, &hspec_new, &hspec_old));
+ if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_gettime
+ case TARGET_NR_timer_gettime:
+ {
+ /* args: timer_t timerid, struct itimerspec *curr_value */
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else if (!arg2) {
+ ret = -TARGET_EFAULT;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ struct itimerspec hspec;
+ ret = get_errno(timer_gettime(htimer, &hspec));
+
+ if (host_to_target_itimerspec(arg2, &hspec)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_gettime64
+ case TARGET_NR_timer_gettime64:
+ {
+ /* args: timer_t timerid, struct itimerspec64 *curr_value */
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else if (!arg2) {
+ ret = -TARGET_EFAULT;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ struct itimerspec hspec;
+ ret = get_errno(timer_gettime(htimer, &hspec));
+
+ if (host_to_target_itimerspec64(arg2, &hspec)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_getoverrun
+ case TARGET_NR_timer_getoverrun:
+ {
+ /* args: timer_t timerid */
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ ret = get_errno(timer_getoverrun(htimer));
+ }
+ return ret;
+ }
+#endif
+
+#ifdef TARGET_NR_timer_delete
+ case TARGET_NR_timer_delete:
+ {
+ /* args: timer_t timerid */
+ target_timer_t timerid = get_timer_id(arg1);
+
+ if (timerid < 0) {
+ ret = timerid;
+ } else {
+ timer_t htimer = g_posix_timers[timerid];
+ ret = get_errno(timer_delete(htimer));
+ g_posix_timers[timerid] = 0;
+ }
+ return ret;
+ }
+#endif
+
+#if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
+ case TARGET_NR_timerfd_create:
+ return get_errno(timerfd_create(arg1,
+ target_to_host_bitmask(arg2, fcntl_flags_tbl)));
+#endif
+
+#if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
+ case TARGET_NR_timerfd_gettime:
+ {
+ struct itimerspec its_curr;
+
+ ret = get_errno(timerfd_gettime(arg1, &its_curr));
+
+ if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+
+#if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD)
+ case TARGET_NR_timerfd_gettime64:
+ {
+ struct itimerspec its_curr;
+
+ ret = get_errno(timerfd_gettime(arg1, &its_curr));
+
+ if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+
+#if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
+ case TARGET_NR_timerfd_settime:
+ {
+ struct itimerspec its_new, its_old, *p_new;
+
+ if (arg3) {
+ if (target_to_host_itimerspec(&its_new, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ p_new = &its_new;
+ } else {
+ p_new = NULL;
+ }
+
+ ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
+
+ if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+
+#if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)
+ case TARGET_NR_timerfd_settime64:
+ {
+ struct itimerspec its_new, its_old, *p_new;
+
+ if (arg3) {
+ if (target_to_host_itimerspec64(&its_new, arg3)) {
+ return -TARGET_EFAULT;
+ }
+ p_new = &its_new;
+ } else {
+ p_new = NULL;
+ }
+
+ ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
+
+ if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ return ret;
+#endif
+
+#if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
+ case TARGET_NR_ioprio_get:
+ return get_errno(ioprio_get(arg1, arg2));
+#endif
+
+#if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
+ case TARGET_NR_ioprio_set:
+ return get_errno(ioprio_set(arg1, arg2, arg3));
+#endif
+
+#if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
+ case TARGET_NR_setns:
+ return get_errno(setns(arg1, arg2));
+#endif
+#if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
+ case TARGET_NR_unshare:
+ return get_errno(unshare(arg1));
+#endif
+#if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
+ case TARGET_NR_kcmp:
+ return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
+#endif
+#ifdef TARGET_NR_swapcontext
+ case TARGET_NR_swapcontext:
+ /* PowerPC specific. */
+ return do_swapcontext(cpu_env, arg1, arg2, arg3);
+#endif
+#ifdef TARGET_NR_memfd_create
+ case TARGET_NR_memfd_create:
+ p = lock_user_string(arg1);
+ if (!p) {
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(memfd_create(p, arg2));
+ fd_trans_unregister(ret);
+ unlock_user(p, arg1, 0);
+ return ret;
+#endif
+#if defined TARGET_NR_membarrier && defined __NR_membarrier
+ case TARGET_NR_membarrier:
+ return get_errno(membarrier(arg1, arg2));
+#endif
+
+#if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
+ case TARGET_NR_copy_file_range:
+ {
+ loff_t inoff, outoff;
+ loff_t *pinoff = NULL, *poutoff = NULL;
+
+ if (arg2) {
+ if (get_user_u64(inoff, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ pinoff = &inoff;
+ }
+ if (arg4) {
+ if (get_user_u64(outoff, arg4)) {
+ return -TARGET_EFAULT;
+ }
+ poutoff = &outoff;
+ }
+ ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff,
+ arg5, arg6));
+ if (!is_error(ret) && ret > 0) {
+ if (arg2) {
+ if (put_user_u64(inoff, arg2)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ if (arg4) {
+ if (put_user_u64(outoff, arg4)) {
+ return -TARGET_EFAULT;
+ }
+ }
+ }
+ }
+ return ret;
+#endif
+
+ default:
+ qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
+ return -TARGET_ENOSYS;
+ }
+ return ret;
+}
+
+abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4,
+ abi_long arg5, abi_long arg6, abi_long arg7,
+ abi_long arg8)
+{
+ CPUState *cpu = env_cpu(cpu_env);
+ abi_long ret;
+
+#ifdef DEBUG_ERESTARTSYS
+ /* Debug-only code for exercising the syscall-restart code paths
+ * in the per-architecture cpu main loops: restart every syscall
+ * the guest makes once before letting it through.
+ */
+ {
+ static bool flag;
+ flag = !flag;
+ if (flag) {
+ return -TARGET_ERESTARTSYS;
+ }
+ }
+#endif
+
+ record_syscall_start(cpu, num, arg1,
+ arg2, arg3, arg4, arg5, arg6, arg7, arg8);
+
+ if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
+ print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6);
+ }
+
+ ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
+ arg5, arg6, arg7, arg8);
+
+ if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
+ print_syscall_ret(cpu_env, num, ret, arg1, arg2,
+ arg3, arg4, arg5, arg6);
+ }
+
+ record_syscall_return(cpu, num, ret);
+ return ret;
+}
{IP,IPV6}_MULTICAST_IF was not supported. Reported-by: Yunqiang Su <syq@debian.org> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> --- linux-user/syscall.c | 4 + linux-user/syscall.c.orig | 13305 ++++++++++++++++++++++++++++++++++++ 2 files changed, 13309 insertions(+) create mode 100644 linux-user/syscall.c.orig