* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
231 lines
5.7 KiB
C
231 lines
5.7 KiB
C
/* $NetBSD: fstab.c,v 1.31 2012/03/13 21:13:34 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1980, 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)fstab.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
__RCSID("$NetBSD: fstab.c,v 1.31 2012/03/13 21:13:34 christos Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "namespace.h"
|
|
#include <sys/types.h>
|
|
|
|
#include <assert.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fstab.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(endfsent,_endfsent)
|
|
__weak_alias(getfsent,_getfsent)
|
|
__weak_alias(getfsfile,_getfsfile)
|
|
__weak_alias(getfsspec,_getfsspec)
|
|
__weak_alias(setfsent,_setfsent)
|
|
#endif
|
|
|
|
static FILE *_fs_fp;
|
|
static size_t _fs_lineno = 0;
|
|
static const char *_fs_file = _PATH_FSTAB;
|
|
static struct fstab _fs_fstab;
|
|
|
|
static char *nextfld(char **, const char *);
|
|
static int fstabscan(void);
|
|
|
|
|
|
static char *
|
|
nextfld(char **str, const char *sep)
|
|
{
|
|
char *ret;
|
|
|
|
_DIAGASSERT(str != NULL);
|
|
_DIAGASSERT(sep != NULL);
|
|
|
|
while ((ret = stresep(str, sep, '\\')) != NULL && *ret == '\0')
|
|
continue;
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int
|
|
fstabscan(void)
|
|
{
|
|
char *cp, *lp, *sp;
|
|
#define MAXLINELENGTH 1024
|
|
static char line[MAXLINELENGTH];
|
|
char subline[MAXLINELENGTH];
|
|
static const char sep[] = ":\n";
|
|
static const char ws[] = " \t\n";
|
|
static const char *fstab_type[] = {
|
|
FSTAB_RW, FSTAB_RQ, FSTAB_RO, FSTAB_SW, FSTAB_DP, FSTAB_XX, NULL
|
|
};
|
|
|
|
(void)memset(&_fs_fstab, 0, sizeof(_fs_fstab));
|
|
for (;;) {
|
|
if (!(lp = fgets(line, (int)sizeof(line), _fs_fp)))
|
|
return 0;
|
|
_fs_lineno++;
|
|
/* OLD_STYLE_FSTAB */
|
|
if (!strpbrk(lp, " \t")) {
|
|
_fs_fstab.fs_spec = nextfld(&lp, sep);
|
|
if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
|
|
continue;
|
|
_fs_fstab.fs_file = nextfld(&lp, sep);
|
|
_fs_fstab.fs_type = nextfld(&lp, sep);
|
|
if (_fs_fstab.fs_type) {
|
|
if (!strcmp(_fs_fstab.fs_type, FSTAB_XX))
|
|
continue;
|
|
_fs_fstab.fs_mntops = _fs_fstab.fs_type;
|
|
_fs_fstab.fs_vfstype =
|
|
__UNCONST(
|
|
strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
|
|
"ufs" : "swap");
|
|
if ((cp = nextfld(&lp, sep)) != NULL) {
|
|
_fs_fstab.fs_freq = atoi(cp);
|
|
if ((cp = nextfld(&lp, sep)) != NULL) {
|
|
_fs_fstab.fs_passno = atoi(cp);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
goto bad;
|
|
}
|
|
/* OLD_STYLE_FSTAB */
|
|
_fs_fstab.fs_spec = nextfld(&lp, ws);
|
|
if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
|
|
continue;
|
|
_fs_fstab.fs_file = nextfld(&lp, ws);
|
|
_fs_fstab.fs_vfstype = nextfld(&lp, ws);
|
|
_fs_fstab.fs_mntops = nextfld(&lp, ws);
|
|
if (_fs_fstab.fs_mntops == NULL)
|
|
goto bad;
|
|
_fs_fstab.fs_freq = 0;
|
|
_fs_fstab.fs_passno = 0;
|
|
if ((cp = nextfld(&lp, ws)) != NULL) {
|
|
_fs_fstab.fs_freq = atoi(cp);
|
|
if ((cp = nextfld(&lp, ws)) != NULL)
|
|
_fs_fstab.fs_passno = atoi(cp);
|
|
}
|
|
|
|
/* subline truncated iff line truncated */
|
|
(void)strlcpy(subline, _fs_fstab.fs_mntops, sizeof(subline));
|
|
sp = subline;
|
|
|
|
while ((cp = nextfld(&sp, ",")) != NULL) {
|
|
const char **tp;
|
|
|
|
if (strlen(cp) != 2)
|
|
continue;
|
|
|
|
for (tp = fstab_type; *tp; tp++)
|
|
if (strcmp(cp, *tp) == 0) {
|
|
_fs_fstab.fs_type = __UNCONST(*tp);
|
|
break;
|
|
}
|
|
if (*tp)
|
|
break;
|
|
}
|
|
if (_fs_fstab.fs_type == NULL)
|
|
goto bad;
|
|
if (strcmp(_fs_fstab.fs_type, FSTAB_XX) == 0)
|
|
continue;
|
|
if (cp != NULL)
|
|
return 1;
|
|
|
|
bad:
|
|
warnx("%s, %lu: Missing fields", _fs_file, (u_long)_fs_lineno);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
struct fstab *
|
|
getfsent(void)
|
|
{
|
|
if ((!_fs_fp && !setfsent()) || !fstabscan())
|
|
return NULL;
|
|
return &_fs_fstab;
|
|
}
|
|
|
|
struct fstab *
|
|
getfsspec(const char *name)
|
|
{
|
|
|
|
_DIAGASSERT(name != NULL);
|
|
|
|
if (setfsent())
|
|
while (fstabscan())
|
|
if (!strcmp(_fs_fstab.fs_spec, name))
|
|
return &_fs_fstab;
|
|
return NULL;
|
|
}
|
|
|
|
struct fstab *
|
|
getfsfile(const char *name)
|
|
{
|
|
|
|
_DIAGASSERT(name != NULL);
|
|
|
|
if (setfsent())
|
|
while (fstabscan())
|
|
if (!strcmp(_fs_fstab.fs_file, name))
|
|
return &_fs_fstab;
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
setfsent(void)
|
|
{
|
|
_fs_lineno = 0;
|
|
if (_fs_fp) {
|
|
rewind(_fs_fp);
|
|
return 1;
|
|
}
|
|
if ((_fs_fp = fopen(_PATH_FSTAB, "re")) == NULL) {
|
|
warn("Cannot open `%s'", _PATH_FSTAB);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
endfsent(void)
|
|
{
|
|
if (_fs_fp) {
|
|
(void)fclose(_fs_fp);
|
|
_fs_fp = NULL;
|
|
}
|
|
}
|