sysdeps/mach/hurd/unlinkat.c

   1 /* unlinkat -- Remove a name relative to an open directory.  Hurd version.
   2    Copyright (C) 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 <errno.h>
  21 #include <fcntl.h>
  22 #include <stddef.h>
  23 #include <unistd.h>
  24 #include <hurd.h>
  25 #include <hurd/fd.h>
  26
  27
  28 /* Remove the link named NAME.  */
  29 int
  30 unlinkat (fd, name, flag)
  31      int fd;
  32      const char *name;
  33      int flag;
  34 {
  35   error_t err;
  36   file_t dir;
  37   const char *file;
  38
  39   if ((flag &~ AT_REMOVEDIR) != 0)
  40     {
  41       __set_errno (EINVAL);
  42       return -1;
  43     }
  44
  45   dir = __directory_name_split_at (fd, name, (char **) &file);
  46   if (dir == MACH_PORT_NULL)
  47     return -1;
  48
  49   err = ((flag & AT_REMOVEDIR) ? __dir_rmdir : __dir_unlink) (dir, file);
  50   __mach_port_deallocate (__mach_task_self (), dir);
  51
  52   if (err)
  53     return __hurd_fail (err);
  54   return 0;
  55 }