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-rw-r--r--misc/fstab.c260
1 files changed, 82 insertions, 178 deletions
diff --git a/misc/fstab.c b/misc/fstab.c
index ac59cab861..c3c27df6ef 100644
--- a/misc/fstab.c
+++ b/misc/fstab.c
@@ -1,205 +1,109 @@
-/*
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
+/*
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)fstab.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
+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.
-#include <errno.h>
-#include <fstab.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+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.
-#ifndef EFTYPE
-#define EFTYPE EINVAL
-#endif
+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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
-static FILE *_fs_fp;
-static struct fstab _fs_fstab;
+#include <fstab.h>
+#include <mntent.h>
+#include <stdio.h>
-static void error __P((int));
+static FILE *fstab;
-static int
-fstabscan __P((void))
+static FILE *
+fstab_stream (void)
{
- register char *cp;
-#define MAXLINELENGTH 1024
- static char line[MAXLINELENGTH];
- char subline[MAXLINELENGTH];
- int typexx;
-
- for (;;) {
- if (!(cp = fgets(line, sizeof(line), _fs_fp)))
- return(0);
-/* OLD_STYLE_FSTAB */
- if (!strpbrk(cp, " \t")) {
- _fs_fstab.fs_spec = strtok(cp, ":\n");
- _fs_fstab.fs_file = strtok((char *)NULL, ":\n");
- _fs_fstab.fs_type = strtok((char *)NULL, ":\n");
- 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 =
- strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
- "ufs" : "swap";
- if (cp = strtok((char *)NULL, ":\n")) {
- _fs_fstab.fs_freq = atoi(cp);
- if (cp = strtok((char *)NULL, ":\n")) {
- _fs_fstab.fs_passno = atoi(cp);
- return(1);
- }
- }
- }
- goto bad;
- }
-/* OLD_STYLE_FSTAB */
- _fs_fstab.fs_spec = strtok(cp, " \t\n");
- if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
- continue;
- _fs_fstab.fs_file = strtok((char *)NULL, " \t\n");
- _fs_fstab.fs_vfstype = strtok((char *)NULL, " \t\n");
- _fs_fstab.fs_mntops = strtok((char *)NULL, " \t\n");
- if (_fs_fstab.fs_mntops == NULL)
- goto bad;
- _fs_fstab.fs_freq = 0;
- _fs_fstab.fs_passno = 0;
- if ((cp = strtok((char *)NULL, " \t\n")) != NULL) {
- _fs_fstab.fs_freq = atoi(cp);
- if ((cp = strtok((char *)NULL, " \t\n")) != NULL)
- _fs_fstab.fs_passno = atoi(cp);
- }
- strcpy(subline, _fs_fstab.fs_mntops);
- for (typexx = 0, cp = strtok(subline, ","); cp;
- cp = strtok((char *)NULL, ",")) {
- if (strlen(cp) != 2)
- continue;
- if (!strcmp(cp, FSTAB_RW)) {
- _fs_fstab.fs_type = FSTAB_RW;
- break;
- }
- if (!strcmp(cp, FSTAB_RQ)) {
- _fs_fstab.fs_type = FSTAB_RQ;
- break;
- }
- if (!strcmp(cp, FSTAB_RO)) {
- _fs_fstab.fs_type = FSTAB_RO;
- break;
- }
- if (!strcmp(cp, FSTAB_SW)) {
- _fs_fstab.fs_type = FSTAB_SW;
- break;
- }
- if (!strcmp(cp, FSTAB_XX)) {
- _fs_fstab.fs_type = FSTAB_XX;
- typexx++;
- break;
- }
- }
- if (typexx)
- continue;
- if (cp != NULL)
- return(1);
-
-bad: /* no way to distinguish between EOF and syntax error */
- error(EFTYPE);
- }
- /* NOTREACHED */
+ if (! fstab)
+ fstab = setmntent (_PATH_FSTAB, "r");
+ return fstab;
}
-struct fstab *
-getfsent()
+int
+setfsent (void)
{
- if (!_fs_fp && !setfsent() || !fstabscan())
- return((struct fstab *)NULL);
- return(&_fs_fstab);
+ if (fstab)
+ {
+ rewind (fstab);
+ return 1;
+ }
+ else
+ fstab = setmntent (_PATH_FSTAB, "r");
+ return fstab ? 0 : 1;
}
-struct fstab *
-getfsspec(name)
- register const char *name;
+static struct fstab *
+mnt2fs (struct mntent *m)
{
- if (setfsent())
- while (fstabscan())
- if (!strcmp(_fs_fstab.fs_spec, name))
- return(&_fs_fstab);
- return((struct fstab *)NULL);
+ static struct fstab f;
+ f.fs_spec = m->mnt_fsname;
+ f.fs_file = m->mnt_dir;
+ f.fs_vfstype = m->mnt_type;
+ f.fs_mntops = m->mnt_opts;
+ f.fs_type = (hasmntopt (m, FSTAB_RW) ? (char *) FSTAB_RW :
+ hasmntopt (m, FSTAB_RQ) ? (char *) FSTAB_RQ :
+ hasmntopt (m, FSTAB_RO) ? (char *) FSTAB_RO :
+ hasmntopt (m, FSTAB_SW) ? (char *) FSTAB_SW :
+ hasmntopt (m, FSTAB_XX) ? (char *) FSTAB_XX :
+ (char *) "??");
+ f.fs_freq = m->mnt_freq;
+ f.fs_passno = m->mnt_passno;
+ return &f;
}
struct fstab *
-getfsfile(name)
- register const char *name;
+getfsent (void)
{
- if (setfsent())
- while (fstabscan())
- if (!strcmp(_fs_fstab.fs_file, name))
- return(&_fs_fstab);
- return((struct fstab *)NULL);
+ FILE *s = fstab_stream ();
+
+ if (! s)
+ return NULL;
+
+ return mnt2fs (getmntent (s));
}
-setfsent()
+struct fstab *
+getfsspec (name)
+ register const char *name;
{
- if (_fs_fp) {
- rewind(_fs_fp);
- return(1);
- }
- if (_fs_fp = fopen(_PATH_FSTAB, "r"))
- return(1);
- error(errno);
- return(0);
+ struct mntent *m;
+ if (setfsent ())
+ while (m = getmntent (fstab))
+ if (!strcmp (m->mnt_fsname, name))
+ return mnt2fs (m);
+ return NULL;
}
-void
-endfsent()
+struct fstab *
+getfsfile (name)
+ register const char *name;
{
- if (_fs_fp) {
- (void)fclose(_fs_fp);
- _fs_fp = NULL;
- }
+ struct mntent *m;
+ if (setfsent ())
+ while (m = getmntent (fstab))
+ if (!strcmp (m->mnt_dir, name))
+ return mnt2fs (m);
+ return NULL;
}
-static void
-error(err)
- int err;
+void
+endfsent ()
{
- char *p;
-
- (void)write(STDERR_FILENO, "fstab: ", 7);
- (void)write(STDERR_FILENO, _PATH_FSTAB, sizeof(_PATH_FSTAB) - 1);
- (void)write(STDERR_FILENO, ": ", 1);
- p = strerror(err);
- (void)write(STDERR_FILENO, p, strlen(p));
- (void)write(STDERR_FILENO, "\n", 1);
+ if (fstab)
+ {
+ (void) endmntent (fstab);
+ fstab = NULL;
+ }
}
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