sysdeps/mach/hurd/renameat.c

   1 /* Rename a file using relative source and destination names.  Hurd version.
   2    Copyright (C) 1991-2014 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 <stdio.h>
  20 #include <hurd.h>
  21 #include <hurd/fd.h>
  22
  23 /* Rename the file OLD relative to OLDFD to NEW relative to NEWFD.  */
  24 int
  25 renameat (oldfd, old, newfd, new)
  26      int oldfd;
  27      const char *old;
  28      int newfd;
  29      const char *new;
  30 {
  31   error_t err;
  32   file_t olddir, newdir;
  33   const char *oldname, *newname;
  34
  35   olddir = __directory_name_split_at (oldfd, old, (char **) &oldname);
  36   if (olddir == MACH_PORT_NULL)
  37     return -1;
  38   newdir = __directory_name_split_at (newfd, new, (char **) &newname);
  39   if (newdir == MACH_PORT_NULL)
  40     {
  41        __mach_port_deallocate (__mach_task_self (), olddir);
  42       return -1;
  43     }
  44
  45   err = __dir_rename (olddir, oldname, newdir, newname, 0);
  46   __mach_port_deallocate (__mach_task_self (), olddir);
  47   __mach_port_deallocate (__mach_task_self (), newdir);
  48   if (err)
  49     return __hurd_fail (err);
  50   return 0;
  51 }