1  /* Copyright (C) 1995-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <sys/sem.h>
      19  #include <ipc_priv.h>
      20  #include <sysdep.h>
      21  #include <errno.h>
      22  
      23  static int
      24  semtimedop_syscall (int semid, struct sembuf *sops, size_t nsops,
      25  		    const struct __timespec64 *timeout)
      26  {
      27  #ifdef __NR_semtimedop_time64
      28    return INLINE_SYSCALL_CALL (semtimedop_time64, semid, sops, nsops, timeout);
      29  #elif defined __ASSUME_DIRECT_SYSVIPC_SYSCALLS && defined __NR_semtimedop
      30    return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, timeout);
      31  #else
      32    return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid,
      33  			      SEMTIMEDOP_IPC_ARGS (nsops, sops, timeout));
      34  #endif
      35  }
      36  
      37  /* Perform user-defined atomic operation of array of semaphores.  */
      38  int
      39  __semtimedop64 (int semid, struct sembuf *sops, size_t nsops,
      40  		const struct __timespec64 *timeout)
      41  {
      42  #ifdef __ASSUME_TIME64_SYSCALLS
      43    return semtimedop_syscall (semid, sops, nsops, timeout);
      44  #else
      45    bool need_time64 = timeout != NULL && !in_int32_t_range (timeout->tv_sec);
      46    if (need_time64)
      47      {
      48        int r = semtimedop_syscall (semid, sops, nsops, timeout);
      49        if (r == 0 || errno != ENOSYS)
      50  	return r;
      51        __set_errno (EOVERFLOW);
      52        return -1;
      53      }
      54  
      55    struct timespec ts32, *pts32 = NULL;
      56    if (timeout != NULL)
      57      {
      58        ts32 = valid_timespec64_to_timespec (*timeout);
      59        pts32 = &ts32;
      60      }
      61  # ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
      62    return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, pts32);
      63  # else
      64    return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid,
      65  			      SEMTIMEDOP_IPC_ARGS (nsops, sops, pts32));
      66  # endif
      67  #endif
      68  }
      69  #if __TIMESIZE != 64
      70  libc_hidden_def (__semtimedop64)
      71  
      72  int
      73  __semtimedop (int semid, struct sembuf *sops, size_t nsops,
      74  	      const struct timespec *timeout)
      75  {
      76    struct __timespec64 ts64, *pts64 = NULL;
      77    if (timeout != NULL)
      78      {
      79        ts64 = valid_timespec_to_timespec64 (*timeout);
      80        pts64 = &ts64;
      81      }
      82    return __semtimedop64 (semid, sops, nsops, pts64);
      83  }
      84  #endif
      85  weak_alias (__semtimedop, semtimedop)