170 lines
3.1 KiB
C
170 lines
3.1 KiB
C
/* Copyright (C) 1991, 1995, 1996, 1998, 2000 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <sys/statfs.h>
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/* Get file-specific information about PATH. */
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long int
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__pathconf (const char *path, int name)
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{
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if (path[0] == '\0')
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{
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__set_errno (ENOENT);
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return -1;
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}
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switch (name)
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{
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default:
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__set_errno (EINVAL);
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return -1;
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case _PC_LINK_MAX:
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#ifdef LINK_MAX
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return LINK_MAX;
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#else
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return -1;
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#endif
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case _PC_MAX_CANON:
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#ifdef MAX_CANON
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return MAX_CANON;
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#else
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return -1;
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#endif
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case _PC_MAX_INPUT:
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#ifdef MAX_INPUT
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return MAX_INPUT;
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#else
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return -1;
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#endif
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case _PC_NAME_MAX:
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#ifdef NAME_MAX
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{
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struct statfs buf;
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int save_errno = errno;
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if (__statfs (path, &buf) < 0)
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{
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if (errno == ENOSYS)
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{
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errno = save_errno;
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return NAME_MAX;
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}
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return -1;
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}
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else
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{
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#ifdef _STATFS_F_NAMELEN
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return buf.f_namelen;
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#else
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# ifdef _STATFS_F_NAME_MAX
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return buf.f_name_max;
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# else
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return NAME_MAX;
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# endif
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#endif
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}
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}
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#else
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return -1;
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#endif
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case _PC_PATH_MAX:
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#ifdef PATH_MAX
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return PATH_MAX;
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#else
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return -1;
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#endif
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case _PC_PIPE_BUF:
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#ifdef PIPE_BUF
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return PIPE_BUF;
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#else
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return -1;
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#endif
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case _PC_CHOWN_RESTRICTED:
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#ifdef _POSIX_CHOWN_RESTRICTED
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return _POSIX_CHOWN_RESTRICTED;
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#else
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return -1;
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#endif
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case _PC_NO_TRUNC:
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#ifdef _POSIX_NO_TRUNC
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return _POSIX_NO_TRUNC;
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#else
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return -1;
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#endif
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case _PC_VDISABLE:
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#ifdef _POSIX_VDISABLE
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return _POSIX_VDISABLE;
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#else
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return -1;
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#endif
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case _PC_SYNC_IO:
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#ifdef _POSIX_SYNC_IO
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return _POSIX_SYNC_IO;
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#else
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return -1;
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#endif
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case _PC_ASYNC_IO:
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#ifdef _POSIX_ASYNC_IO
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return _POSIX_ASYNC_IO;
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#else
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return -1;
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#endif
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case _PC_PRIO_IO:
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#ifdef _POSIX_PRIO_IO
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return _POSIX_PRIO_IO;
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#else
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return -1;
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#endif
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case _PC_SOCK_MAXBUF:
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#ifdef SOCK_MAXBUF
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return SOCK_MAXBUF;
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#else
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return -1;
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#endif
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case _PC_FILESIZEBITS:
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#ifdef FILESIZEBITS
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return FILESIZEBITS;
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#else
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/* We let platforms with larger file sizes overwrite this value. */
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return 32;
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#endif
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}
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}
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#undef __pathconf
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weak_alias (__pathconf, pathconf)
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