io/symlinkat.c

   1 /* Copyright (C) 2005 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <stddef.h>
  22 #include <unistd.h>
  23
  24
  25 /* Make a link to FROM called TO relative to FD.  */
  26 int
  27 symlinkat (from, fd, to)
  28      const char *from;
  29      int fd;
  30      const char *to;
  31 {
  32   if (from == NULL || to == NULL)
  33     {
  34       __set_errno (EINVAL);
  35       return -1;
  36     }
  37
  38   if (fd != AT_FDCWD && fd < 0 && *to != '/')
  39     {
  40       __set_errno (EBADF);
  41       return -1;
  42     }
  43
  44   __set_errno (ENOSYS);
  45   return -1;
  46 }
  47 stub_warning (symlinkat)
  48
  49 #include <stub-tag.h>