sysdeps/mach/hurd/renameat.c

   1 /* Rename a file using relative source and destination names.  Hurd version.
   2    Copyright (C) 1991-2018 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 (int oldfd, const char *old, int newfd, const char *new)
  26 {
  27   error_t err;
  28   file_t olddir, newdir;
  29   const char *oldname, *newname;
  30
  31   olddir = __directory_name_split_at (oldfd, old, (char **) &oldname);
  32   if (olddir == MACH_PORT_NULL)
  33     return -1;
  34   newdir = __directory_name_split_at (newfd, new, (char **) &newname);
  35   if (newdir == MACH_PORT_NULL)
  36     {
  37        __mach_port_deallocate (__mach_task_self (), olddir);
  38       return -1;
  39     }
  40
  41   err = __dir_rename (olddir, oldname, newdir, newname, 0);
  42   __mach_port_deallocate (__mach_task_self (), olddir);
  43   __mach_port_deallocate (__mach_task_self (), newdir);
  44   if (err)
  45     return __hurd_fail (err);
  46   return 0;
  47 }