sysdeps/unix/sysv/linux/fpathconf.c

   1 /* Get file-specific information about descriptor FD.  Linux version.
   2    Copyright (C) 1991,1995,1996,1998-2003,2008 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 "pathconf.h"
  21
  22 static long int posix_fpathconf (int fd, int name);
  23
  24 /* Define this first, so it can be inlined.  */
  25 #define __fpathconf static posix_fpathconf
  26 #include <sysdeps/posix/fpathconf.c>
  27
  28
  29 /* Get file-specific information about descriptor FD.  */
  30 long int
  31 __fpathconf (fd, name)
  32      int fd;
  33      int name;
  34 {
  35   struct statfs fsbuf;
  36
  37   switch (name)
  38     {
  39     case _PC_LINK_MAX:
  40       return __statfs_link_max (__fstatfs (fd, &fsbuf), &fsbuf);
  41
  42     case _PC_FILESIZEBITS:
  43       return __statfs_filesize_max (__fstatfs (fd, &fsbuf), &fsbuf);
  44
  45     case _PC_2_SYMLINKS:
  46       return __statfs_symlinks (__fstatfs (fd, &fsbuf), &fsbuf);
  47
  48     case _PC_CHOWN_RESTRICTED:
  49       return __statfs_chown_restricted (__fstatfs (fd, &fsbuf), &fsbuf);
  50
  51     default:
  52       return posix_fpathconf (fd, name);
  53     }
  54 }