160 lines
3.0 KiB
C
160 lines
3.0 KiB
C
/* Copyright (C) 1991, 1995, 1996, 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <fcntl.h>
|
|
#include <sys/statfs.h>
|
|
|
|
/* Get file-specific information about PATH. */
|
|
long int
|
|
__pathconf (const char *path, int name)
|
|
{
|
|
if (path[0] == '\0')
|
|
{
|
|
__set_errno (ENOENT);
|
|
return -1;
|
|
}
|
|
|
|
switch (name)
|
|
{
|
|
default:
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
|
|
case _PC_LINK_MAX:
|
|
#ifdef LINK_MAX
|
|
return LINK_MAX;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_MAX_CANON:
|
|
#ifdef MAX_CANON
|
|
return MAX_CANON;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_MAX_INPUT:
|
|
#ifdef MAX_INPUT
|
|
return MAX_INPUT;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_NAME_MAX:
|
|
#ifdef NAME_MAX
|
|
{
|
|
struct statfs buf;
|
|
int save_errno = errno;
|
|
|
|
if (__statfs (path, &buf) < 0)
|
|
{
|
|
if (errno == ENOSYS)
|
|
{
|
|
errno = save_errno;
|
|
return NAME_MAX;
|
|
}
|
|
return -1;
|
|
}
|
|
else
|
|
return buf.f_namelen;
|
|
}
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_PATH_MAX:
|
|
#ifdef PATH_MAX
|
|
return PATH_MAX;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_PIPE_BUF:
|
|
#ifdef PIPE_BUF
|
|
return PIPE_BUF;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_CHOWN_RESTRICTED:
|
|
#ifdef _POSIX_CHOWN_RESTRICTED
|
|
return _POSIX_CHOWN_RESTRICTED;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_NO_TRUNC:
|
|
#ifdef _POSIX_NO_TRUNC
|
|
return _POSIX_NO_TRUNC;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_VDISABLE:
|
|
#ifdef _POSIX_VDISABLE
|
|
return _POSIX_VDISABLE;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_SYNC_IO:
|
|
#ifdef _POSIX_SYNC_IO
|
|
return _POSIX_SYNC_IO;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_ASYNC_IO:
|
|
#ifdef _POSIX_ASYNC_IO
|
|
return _POSIX_ASYNC_IO;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_PRIO_IO:
|
|
#ifdef _POSIX_PRIO_IO
|
|
return _POSIX_PRIO_IO;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_SOCK_MAXBUF:
|
|
#ifdef SOCK_MAXBUF
|
|
return SOCK_MAXBUF;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
|
|
case _PC_FILESIZEBITS:
|
|
#ifdef FILESIZEBITS
|
|
return FILESIZEBITS;
|
|
#else
|
|
/* We let platforms with larger file sizes overwrite this value. */
|
|
return 32;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#undef __pathconf
|
|
weak_alias (__pathconf, pathconf)
|