sysdeps/unix/sysv/linux/futimens.c

   1 /* Change access and modification times of open file.  Linux version.
   2    Copyright (C) 2007-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <string.h>
  22 #include <time.h>
  23 #include <sysdep.h>
  24
  25
  26 /* Change the access time of the file associated with FD to TSP[0] and
  27    the modification time of FILE to TSP[1].
  28
  29    Starting with 2.6.22 the Linux kernel has the utimensat syscall which
  30    can be used to implement futimens.  */
  31 int
  32 futimens (int fd, const struct timespec tsp[2])
  33 {
  34 #ifdef __NR_utimensat
  35   if (fd < 0)
  36     return INLINE_SYSCALL_ERROR_RETURN_VALUE (EBADF);
  37   /* Avoid implicit array coercion in syscall macros.  */
  38   return INLINE_SYSCALL (utimensat, 4, fd, NULL, &tsp[0], 0);
  39 #else
  40   return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOSYS);
  41 #endif
  42 }
  43 #ifndef __NR_utimensat
  44 stub_warning (futimens)
  45 #endif