posix/fpathconf.c

   1 /* Copyright (C) 1991-2014 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stddef.h>
  20 #include <unistd.h>
  21
  22
  23 /* Get file-specific information about descriptor FD.  */
  24 long int
  25 __fpathconf (fd, name)
  26      int fd;
  27      int name;
  28 {
  29   if (fd < 0)
  30     {
  31       __set_errno (EBADF);
  32       return -1;
  33     }
  34
  35   switch (name)
  36     {
  37     default:
  38       __set_errno (EINVAL);
  39       return -1;
  40
  41     case _PC_LINK_MAX:
  42     case _PC_MAX_CANON:
  43     case _PC_MAX_INPUT:
  44     case _PC_NAME_MAX:
  45     case _PC_PATH_MAX:
  46     case _PC_PIPE_BUF:
  47     case _PC_SOCK_MAXBUF:
  48     case _PC_CHOWN_RESTRICTED:
  49     case _PC_NO_TRUNC:
  50     case _PC_VDISABLE:
  51       break;
  52     }
  53
  54   __set_errno (ENOSYS);
  55   return -1;
  56 }
  57
  58 weak_alias (__fpathconf, fpathconf)
  59
  60 stub_warning (fpathconf)