sysdeps/mach/hurd/lutimes.c

   1 /* lutimes -- change access and modification times of a symlink.  Hurd version.
   2    Copyright (C) 2002-2017 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 <sys/time.h>
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <hurd.h>
  23 #include <fcntl.h>
  24
  25 /* Change the access time of FILE to TVP[0] and
  26    the modification time of FILE to TVP[1].  */
  27 int
  28 __lutimes (const char *file, const struct timeval tvp[2])
  29 {
  30   union tv
  31   {
  32     struct timeval tv;
  33     time_value_t tvt;
  34   };
  35   const union tv *u = (const union tv *) tvp;
  36   union tv nulltv[2];
  37   error_t err;
  38   file_t port;
  39
  40   if (tvp == NULL)
  41     {
  42       /* Setting the number of microseconds to `-1' tells the
  43          underlying filesystems to use the current time.  */
  44       nulltv[0].tvt.microseconds = nulltv[1].tvt.microseconds = -1;
  45       u = nulltv;
  46     }
  47
  48   port = __file_name_lookup (file, O_NOLINK, 0);
  49   if (port == MACH_PORT_NULL)
  50     return -1;
  51   err = __file_utimes (port, u[0].tvt, u[1].tvt);
  52   __mach_port_deallocate (__mach_task_self (), port);
  53   if (err)
  54     return __hurd_fail (err);
  55   return 0;
  56 }
  57 weak_alias (__lutimes, lutimes)