1/* Copyright (C) 1995-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, August 1995.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sys/sem.h>
20#include <ipc_priv.h>
21#include <sysdep.h>
22#include <errno.h>
23
24static int
25semtimedop_syscall (int semid, struct sembuf *sops, size_t nsops,
26 const struct __timespec64 *timeout)
27{
28#ifdef __NR_semtimedop_time64
29 return INLINE_SYSCALL_CALL (semtimedop_time64, semid, sops, nsops, timeout);
30#elif defined __ASSUME_DIRECT_SYSVIPC_SYSCALLS && defined __NR_semtimedop
31 return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, timeout);
32#else
33 return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid,
34 SEMTIMEDOP_IPC_ARGS (nsops, sops, timeout));
35#endif
36}
37
38/* Perform user-defined atomical operation of array of semaphores. */
39int
40__semtimedop64 (int semid, struct sembuf *sops, size_t nsops,
41 const struct __timespec64 *timeout)
42{
43#ifdef __ASSUME_TIME64_SYSCALLS
44 return semtimedop_syscall (semid, sops, nsops, timeout);
45#else
46 bool need_time64 = timeout != NULL && !in_time_t_range (timeout->tv_sec);
47 if (need_time64)
48 {
49 int r = semtimedop_syscall (semid, sops, nsops, timeout);
50 if (r == 0 || errno != ENOSYS)
51 return r;
52 __set_errno (EOVERFLOW);
53 return -1;
54 }
55
56 struct timespec ts32, *pts32 = NULL;
57 if (timeout != NULL)
58 {
59 ts32 = valid_timespec64_to_timespec (*timeout);
60 pts32 = &ts32;
61 }
62# ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
63 return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, pts32);
64# else
65 return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid,
66 SEMTIMEDOP_IPC_ARGS (nsops, sops, pts32));
67# endif
68#endif
69}
70#if __TIMESIZE != 64
71libc_hidden_def (__semtimedop64)
72
73int
74__semtimedop (int semid, struct sembuf *sops, size_t nsops,
75 const struct timespec *timeout)
76{
77 struct __timespec64 ts64, *pts64 = NULL;
78 if (timeout != NULL)
79 {
80 ts64 = valid_timespec_to_timespec64 (*timeout);
81 pts64 = &ts64;
82 }
83 return __semtimedop64 (semid, sops, nsops, pts64);
84}
85#endif
86weak_alias (__semtimedop, semtimedop)
87