sysdeps/unix/sysv/linux/clock_settime.c

   1 /* Copyright (C) 2003-2024 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 <errno.h>
  19 #include <sysdep.h>
  20 #include <time.h>
  21 #include <shlib-compat.h>
  22 #include <kernel-features.h>
  23
  24 /* Set CLOCK to value TP.  */
  25 int
  26 __clock_settime64 (clockid_t clock_id, const struct __timespec64 *tp)
  27 {
  28   /* Make sure the time cvalue is OK.  */
  29   if (! valid_nanoseconds (tp->tv_nsec))
  30     {
  31       __set_errno (EINVAL);
  32       return -1;
  33     }
  34
  35 #ifndef __NR_clock_settime64
  36 # define __NR_clock_settime64 __NR_clock_settime
  37 #endif
  38   int ret = INLINE_SYSCALL_CALL (clock_settime64, clock_id, tp);
  39
  40 #ifndef __ASSUME_TIME64_SYSCALLS
  41   if (ret == 0 || errno != ENOSYS)
  42     return ret;
  43
  44   if (! in_int32_t_range (tp->tv_sec))
  45     {
  46       __set_errno (EOVERFLOW);
  47       return -1;
  48     }
  49
  50   struct timespec ts32 = valid_timespec64_to_timespec (*tp);
  51   ret = INLINE_SYSCALL_CALL (clock_settime, clock_id, &ts32);
  52 #endif
  53
  54   return ret;
  55 }
  56
  57 #if __TIMESIZE != 64
  58 libc_hidden_def (__clock_settime64)
  59
  60 int
  61 __clock_settime (clockid_t clock_id, const struct timespec *tp)
  62 {
  63   struct __timespec64 ts64 = valid_timespec_to_timespec64 (*tp);
  64
  65   return __clock_settime64 (clock_id, &ts64);
  66 }
  67 #endif
  68
  69 libc_hidden_def (__clock_settime)
  70
  71 versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
  72 /* clock_settime moved to libc in version 2.17;
  73    old binaries may expect the symbol version it had in librt.  */
  74 #if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
  75 strong_alias (__clock_settime, __clock_settime_2);
  76 compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
  77 #endif