sysdeps/mach/hurd/lutimes.c

   1 /* lutimes -- change access and modification times of a symlink.  Hurd version.
   2    Copyright (C) 2002, 2006 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <sys/time.h>
  21 #include <errno.h>
  22 #include <stddef.h>
  23 #include <hurd.h>
  24 #include <fcntl.h>
  25
  26 /* Change the access time of FILE to TVP[0] and
  27    the modification time of FILE to TVP[1].  */
  28 int
  29 __lutimes (const char *file, const struct timeval tvp[2])
  30 {
  31   union tv
  32   {
  33     struct timeval tv;
  34     time_value_t tvt;
  35   };
  36   const union tv *u = (const union tv *) tvp;
  37   union tv nulltv[2];
  38   error_t err;
  39   file_t port;
  40
  41   if (tvp == NULL)
  42     {
  43       /* Setting the number of microseconds to `-1' tells the
  44          underlying filesystems to use the current time.  */
  45       nulltv[0].tvt.microseconds = nulltv[1].tvt.microseconds = -1;
  46       u = nulltv;
  47     }
  48
  49   port = __file_name_lookup (file, O_NOLINK, 0);
  50   if (port == MACH_PORT_NULL)
  51     return -1;
  52   err = __file_utimes (port, u[0].tvt, u[1].tvt);
  53   __mach_port_deallocate (__mach_task_self (), port);
  54   if (err)
  55     return __hurd_fail (err);
  56   return 0;
  57 }
  58 weak_alias (__lutimes, lutimes)