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envelope-from=Filip.Bozuta@syrmia.com; helo=EUR04-DB3-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/25 17:20:21 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Riku Voipio , Laurent Vivier , Filip Bozuta Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This patch introduces functionality for syscall: *recvmmsg_time64 This syscall is a 2038 safe variant for syscall: int recvmmsg(int sockfd, struct mmsghdr *msgvec, unsigned int vlen, int flags, struct timespec *timeout) --receive multiple messages on a socket-- man page: https://man7.org/linux/man-pages/man2/recvmmsg.2.html Implementation notes: Function 'do_sendrecvmmsg()' in 'syscall.c' was changed with the addition of a new argument 'time64' which represents a flag by which the function knows what kind of 'struct timespec' converting function to call ('target_to_host_timespec() or 'target_to_host_timespec64()'). It is false in case of 'TARGET_NR_recvmmsg' and true in case of 'TARGET_NR_recvmmsg_time64'. In 'do_socketcall()', the 'TARGET_ABI_BITS' was checked to know what value for 'time64' argument to pass. Signed-off-by: Filip Bozuta --- linux-user/syscall.c | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index dc89bfacca..762eea0e5b 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3197,7 +3197,7 @@ static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, unsigned int vlen, unsigned int flags, - abi_ulong timeout, int send) + abi_ulong timeout, bool time64, int send) { struct target_mmsghdr *mmsgp; struct timespec ts, end_time, curr_time; @@ -3212,8 +3212,14 @@ static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, return -TARGET_EFAULT; } if (timeout) { - if (target_to_host_timespec(&ts, timeout)) { - return -TARGET_EFAULT; + if (time64) { + if (target_to_host_timespec64(&ts, timeout)) { + return -TARGET_EFAULT; + } + } else { + if (target_to_host_timespec(&ts, timeout)) { + return -TARGET_EFAULT; + } } if (ts.tv_sec < 0 || ts.tv_nsec < 0 || ts.tv_nsec > 1000000000) { return -TARGET_EINVAL; @@ -3506,7 +3512,7 @@ static abi_long do_socketcall(int num, abi_ulong vptr) [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] = 5, /* fd, msgvec, vlen, flags, timeout */ + [TARGET_SYS_RECVMMSG] = 6, /* fd, msgvec, vlen, flags, timeout */ [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */ }; abi_long a[6]; /* max 6 args */ @@ -3566,9 +3572,10 @@ static abi_long do_socketcall(int num, abi_ulong vptr) 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, timeout */ - return do_sendrecvmmsg(a[0], a[1], a[2], a[3], a[4], 0); + return do_sendrecvmmsg(a[0], a[1], a[2], a[3], a[4], + TARGET_ABI_BITS == 64, 0); case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */ - return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0, 1); + return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0, false, 1); default: qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num); return -TARGET_EINVAL; @@ -9372,11 +9379,15 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_sendmmsg case TARGET_NR_sendmmsg: - return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0, 1); + return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0, false, 1); #endif #ifdef TARGET_NR_recvmmsg case TARGET_NR_recvmmsg: - return do_sendrecvmmsg(arg1, arg2, arg3, arg4, arg5, 0); + return do_sendrecvmmsg(arg1, arg2, arg3, arg4, arg5, false, 0); +#endif +#ifdef TARGET_NR_recvmmsg_time64 + case TARGET_NR_recvmmsg_time64: + return do_sendrecvmmsg(arg1, arg2, arg3, arg4, arg5, true, 0); #endif #ifdef TARGET_NR_sendto case TARGET_NR_sendto: