| Message ID | 20200226113834.26404-1-chengang@emindsoft.com.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | linux-user: syscall: ioctls: support DRM_IOCTL_VERSION | expand |
Le 26/02/2020 à 12:38, chengang@emindsoft.com.cn a écrit : > From: Chen Gang <chengang@emindsoft.com.cn> > > The other DRM_IOCTL_* commands will be done later. > > Signed-off-by: Chen Gang <chengang@emindsoft.com.cn> > --- > linux-user/ioctls.h | 3 + > linux-user/syscall.c | 134 +++++++++++++++++++++++++++++++++++++ > linux-user/syscall_defs.h | 16 +++++ > linux-user/syscall_types.h | 12 ++++ > 4 files changed, 165 insertions(+) > > diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h > index 0defa1d8c1..c2294b48a0 100644 > --- a/linux-user/ioctls.h > +++ b/linux-user/ioctls.h > @@ -574,6 +574,9 @@ > IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt, > MK_PTR(MK_STRUCT(STRUCT_rtentry))) > > + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm, > + MK_PTR(MK_STRUCT(STRUCT_drm_version))) > + Rather than adding a specific function to process the structure, perhaps we can add this in a generic way? The problem with drm_version structure is the pointers to the strings. Did you try to add a TYPE_STRING in thunk_type_size()/thunk_type_align()/think_convert()/do_ioctl() to do that? ... > diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h > index 152ec637cb..5e455a32af 100644 > --- a/linux-user/syscall_defs.h > +++ b/linux-user/syscall_defs.h > @@ -1167,6 +1167,9 @@ struct target_rtc_pll_info { > #define TARGET_DM_TARGET_MSG TARGET_IOWRU(0xfd, 0x0e) > #define TARGET_DM_DEV_SET_GEOMETRY TARGET_IOWRU(0xfd, 0x0f) > > +/* drm ioctls */ > +#define TARGET_DRM_IOCTL_VERSION TARGET_IOWRU('d', 0x00) Why do you use the TARGET_IOWRU variant? Can't you use TARGET_IOWR('d', 0x00, struct target_drm_version)? > + > /* from asm/termbits.h */ > > #define TARGET_NCC 8 > @@ -2598,6 +2602,18 @@ struct target_mq_attr { > abi_long mq_curmsgs; > }; > > +struct target_drm_version { > + int version_major; > + int version_minor; > + int version_patchlevel; > + abi_ulong name_len; > + abi_ulong name; > + abi_ulong date_len; > + abi_ulong date; > + abi_ulong desc_len; > + abi_ulong desc; > +}; > + > #include "socket.h" > > #include "errno_defs.h" > diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h > index 4e12c1661e..52a031ad35 100644 > --- a/linux-user/syscall_types.h > +++ b/linux-user/syscall_types.h > @@ -292,6 +292,18 @@ STRUCT(dm_target_versions, > STRUCT(dm_target_msg, > TYPE_ULONGLONG) /* sector */ > > +/* TODO: use #ifdef 32 bit #else 64 bit, next */ > +STRUCT(drm_version, > + TYPE_INT, /* version_major */ > + TYPE_INT, /* version_minor */ > + TYPE_INT, /* version_patchlevel */ > + TYPE_ULONG, /* name_len */ > + TYPE_PTRVOID, /* name */ > + TYPE_ULONG, /* date_len */ > + TYPE_PTRVOID, /* date */ > + TYPE_ULONG, /* desc_len */ > + TYPE_PTRVOID) /* desc */ > + After defining a TYPE_STRING, you could use MKPTR(TYPE_STRING) for name, date and desc. Thanks, Laurent
Le 10/03/2020 à 21:16, Laurent Vivier a écrit : > Le 26/02/2020 à 12:38, chengang@emindsoft.com.cn a écrit : >> From: Chen Gang <chengang@emindsoft.com.cn> >> >> The other DRM_IOCTL_* commands will be done later. >> >> Signed-off-by: Chen Gang <chengang@emindsoft.com.cn> >> --- >> linux-user/ioctls.h | 3 + >> linux-user/syscall.c | 134 +++++++++++++++++++++++++++++++++++++ >> linux-user/syscall_defs.h | 16 +++++ >> linux-user/syscall_types.h | 12 ++++ >> 4 files changed, 165 insertions(+) >> >> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h >> index 0defa1d8c1..c2294b48a0 100644 >> --- a/linux-user/ioctls.h >> +++ b/linux-user/ioctls.h >> @@ -574,6 +574,9 @@ >> IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt, >> MK_PTR(MK_STRUCT(STRUCT_rtentry))) >> >> + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm, >> + MK_PTR(MK_STRUCT(STRUCT_drm_version))) >> + > > Rather than adding a specific function to process the structure, perhaps > we can add this in a generic way? > > The problem with drm_version structure is the pointers to the strings. > > Did you try to add a TYPE_STRING in > thunk_type_size()/thunk_type_align()/think_convert()/do_ioctl() to do that? In fact we can't do that because we need to know the size of the buffer to allocate and it is provided by another field. It cannot be generic, so I think what you do is the best we can do. Thanks, LAurent
Thank you very much for your reply. :) DRM_IOCTL_VERSION has to be a special one, but my patch really need be improved. The string pointers should be translated, but the new string buffers need not be allocated. I will try to send patch v2 within this week end. DRM_IOCTL_* really have many commands, at present, I have implemented about 20+ commands for i965 gpu using, although some of them are not generic enough. I will try to send all of them when I have free time. Thanks. On 2020/3/11 下午3:35, Laurent Vivier wrote: > Le 10/03/2020 à 21:16, Laurent Vivier a écrit : >> Le 26/02/2020 à 12:38, chengang@emindsoft.com.cn a écrit : >>> From: Chen Gang <chengang@emindsoft.com.cn> >>> >>> The other DRM_IOCTL_* commands will be done later. >>> >>> Signed-off-by: Chen Gang <chengang@emindsoft.com.cn> >>> --- >>> linux-user/ioctls.h | 3 + >>> linux-user/syscall.c | 134 +++++++++++++++++++++++++++++++++++++ >>> linux-user/syscall_defs.h | 16 +++++ >>> linux-user/syscall_types.h | 12 ++++ >>> 4 files changed, 165 insertions(+) >>> >>> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h >>> index 0defa1d8c1..c2294b48a0 100644 >>> --- a/linux-user/ioctls.h >>> +++ b/linux-user/ioctls.h >>> @@ -574,6 +574,9 @@ >>> IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt, >>> MK_PTR(MK_STRUCT(STRUCT_rtentry))) >>> >>> + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm, >>> + MK_PTR(MK_STRUCT(STRUCT_drm_version))) >>> + >> >> Rather than adding a specific function to process the structure, perhaps >> we can add this in a generic way? >> >> The problem with drm_version structure is the pointers to the strings. >> >> Did you try to add a TYPE_STRING in >> thunk_type_size()/thunk_type_align()/think_convert()/do_ioctl() to do that? > > In fact we can't do that because we need to know the size of the buffer > to allocate and it is provided by another field. It cannot be generic, > so I think what you do is the best we can do. > > Thanks, > LAurent > > > > >
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 0defa1d8c1..c2294b48a0 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -574,6 +574,9 @@ IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt, MK_PTR(MK_STRUCT(STRUCT_rtentry))) + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm, + MK_PTR(MK_STRUCT(STRUCT_drm_version))) + #ifdef TARGET_TIOCSTART IOCTL_IGNORE(TIOCSTART) IOCTL_IGNORE(TIOCSTOP) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 8d27d10807..1f5d48a0b0 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -112,6 +112,7 @@ #include <linux/if_alg.h> #include <linux/rtc.h> #include <sound/asound.h> +#include <libdrm/drm.h> #include "linux_loop.h" #include "uname.h" @@ -5196,6 +5197,139 @@ static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp, } #endif +static inline void free_drmversion(struct drm_version *host) +{ + if (!host) { + return; + } + if (host->name) { + free(host->name); + } + if (host->date) { + free(host->date); + } + if (host->desc) { + free(host->desc); + } +} + +static inline bool t2h_drmversion_str(unsigned long *hlen, + char **h, abi_ulong *glen) +{ + __get_user(*hlen, glen); + if (*hlen) { + *h = malloc(*hlen + 1); + if (!*h) { + return false; + } + (*h)[*hlen] = '\0'; + } else { + *h = NULL; + } + return true; +} + +static inline abi_long target_to_host_drmversion(struct drm_version *host_ver, + abi_long target_addr) +{ + struct target_drm_version *target_ver; + + if (!lock_user_struct(VERIFY_READ, target_ver, target_addr, 0)) { + return -TARGET_EFAULT; + } + __get_user(host_ver->name_len, &target_ver->name_len); + if (!t2h_drmversion_str(&host_ver->name_len, + &host_ver->name, &target_ver->name_len)) { + goto err; + } + if (!t2h_drmversion_str(&host_ver->date_len, + &host_ver->date, &target_ver->date_len)) { + goto err; + } + if (!t2h_drmversion_str(&host_ver->desc_len, + &host_ver->desc, &target_ver->desc_len)) { + goto err; + } + unlock_user_struct(target_ver, target_addr, 0); + return 0; + +err: + free_drmversion(host_ver); + return -TARGET_ENOMEM; +} + +static inline bool h2t_drmversion_str(int hlen, char *h, + abi_ulong *glen, abi_ulong g) +{ + char *target_str; + + if ((hlen > 0) && h) { + target_str = lock_user(VERIFY_WRITE, g, hlen, 0); + if (!target_str) { + return false; + } + memcpy(target_str, h, hlen); + unlock_user(target_str, g, hlen); + } + __put_user(hlen, glen); + return true; +} + +static inline abi_long host_to_target_drmversion(abi_ulong target_addr, + struct drm_version *host_ver) +{ + struct target_drm_version *target_ver; + + if (!lock_user_struct(VERIFY_WRITE, target_ver, target_addr, 0)) { + return -TARGET_EFAULT; + } + __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); + if (!h2t_drmversion_str(host_ver->name_len, host_ver->name, + &target_ver->name_len, target_ver->name)) { + return -TARGET_EFAULT; + } + if (!h2t_drmversion_str(host_ver->date_len, host_ver->date, + &target_ver->date_len, target_ver->date)) { + return -TARGET_EFAULT; + } + if (!h2t_drmversion_str(host_ver->desc_len, host_ver->desc, + &target_ver->desc_len, target_ver->desc)) { + return -TARGET_EFAULT; + } + + unlock_user_struct(target_ver, target_addr, 0); + return 0; +} + +static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg) +{ + struct drm_version *ver; + abi_long ret; + + switch (ie->host_cmd) { + case DRM_IOCTL_VERSION: + ver = (struct drm_version *)buf_temp; + memset(ver, 0, sizeof(*ver)); + ret = target_to_host_drmversion(ver, arg); + if (is_error(ret)) { + return ret; + } + ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver)); + if (is_error(ret)) { + free_drmversion(ver); + return ret; + } + ret = host_to_target_drmversion(arg, ver); + free_drmversion(ver); + return ret; + break; + } + return -TARGET_EFAULT; +} + static IOCTLEntry ioctl_entries[] = { #define IOCTL(cmd, access, ...) \ { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 152ec637cb..5e455a32af 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1167,6 +1167,9 @@ struct target_rtc_pll_info { #define TARGET_DM_TARGET_MSG TARGET_IOWRU(0xfd, 0x0e) #define TARGET_DM_DEV_SET_GEOMETRY TARGET_IOWRU(0xfd, 0x0f) +/* drm ioctls */ +#define TARGET_DRM_IOCTL_VERSION TARGET_IOWRU('d', 0x00) + /* from asm/termbits.h */ #define TARGET_NCC 8 @@ -2598,6 +2602,18 @@ struct target_mq_attr { abi_long mq_curmsgs; }; +struct target_drm_version { + int version_major; + int version_minor; + int version_patchlevel; + abi_ulong name_len; + abi_ulong name; + abi_ulong date_len; + abi_ulong date; + abi_ulong desc_len; + abi_ulong desc; +}; + #include "socket.h" #include "errno_defs.h" diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 4e12c1661e..52a031ad35 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -292,6 +292,18 @@ STRUCT(dm_target_versions, STRUCT(dm_target_msg, TYPE_ULONGLONG) /* sector */ +/* TODO: use #ifdef 32 bit #else 64 bit, next */ +STRUCT(drm_version, + TYPE_INT, /* version_major */ + TYPE_INT, /* version_minor */ + TYPE_INT, /* version_patchlevel */ + TYPE_ULONG, /* name_len */ + TYPE_PTRVOID, /* name */ + TYPE_ULONG, /* date_len */ + TYPE_PTRVOID, /* date */ + TYPE_ULONG, /* desc_len */ + TYPE_PTRVOID) /* desc */ + STRUCT(file_clone_range, TYPE_LONGLONG, /* src_fd */ TYPE_ULONGLONG, /* src_offset */