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4e5f31c847
ext4 has a higher LINK_MAX limit than ext2/3. Unfortunately it is not easy to distinguish the filesystems from userlevel.
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* Get file-specific information about descriptor FD. Linux version.
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Copyright (C) 1991,1995,1996,1998-2003,2008,2010,2011
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <fcntl.h>
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#include "pathconf.h"
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static long int posix_fpathconf (int fd, int name);
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/* Define this first, so it can be inlined. */
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#define __fpathconf static posix_fpathconf
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#include <sysdeps/posix/fpathconf.c>
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/* Get file-specific information about descriptor FD. */
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long int
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__fpathconf (fd, name)
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int fd;
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int name;
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{
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struct statfs fsbuf;
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int r;
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switch (name)
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{
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case _PC_LINK_MAX:
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return __statfs_link_max (__fstatfs (fd, &fsbuf), &fsbuf, NULL, fd);
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case _PC_FILESIZEBITS:
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return __statfs_filesize_max (__fstatfs (fd, &fsbuf), &fsbuf);
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case _PC_2_SYMLINKS:
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return __statfs_symlinks (__fstatfs (fd, &fsbuf), &fsbuf);
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case _PC_CHOWN_RESTRICTED:
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return __statfs_chown_restricted (__fstatfs (fd, &fsbuf), &fsbuf);
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case _PC_PIPE_BUF:
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r = __fcntl (fd, F_GETPIPE_SZ);
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if (r > 0)
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return r;
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/* FALLTHROUGH */
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default:
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return posix_fpathconf (fd, name);
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}
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}
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