-/*
- * 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)fstab.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-
-#include <errno.h>
+/* Copyright (C) 1995, 1996, 1997, 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 <fstab.h>
+#include <mntent.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+#include <bits/libc-lock.h>
-static FILE *_fs_fp;
-static struct fstab _fs_fstab;
+#define BUFFER_SIZE 0x1fc0
-static error __P((int));
-static fstabscan __P((void));
+struct fstab_state
+{
+ FILE *fs_fp;
+ char *fs_buffer;
+ struct mntent fs_mntres;
+ struct fstab fs_ret;
+};
-static
-fstabscan()
+static struct fstab_state *fstab_init (int opt_rewind);
+static struct mntent *fstab_fetch (struct fstab_state *state);
+static struct fstab *fstab_convert (struct fstab_state *state);
+
+static struct fstab_state fstab_state;
+
+
+int
+setfsent (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 */
+ return fstab_init (1) != NULL;
}
+
struct fstab *
-getfsent()
+getfsent (void)
{
- if (!_fs_fp && !setfsent() || !fstabscan())
- return((struct fstab *)NULL);
- return(&_fs_fstab);
+ struct fstab_state *state;
+
+ state = fstab_init (0);
+ if (state == NULL)
+ return NULL;
+ if (fstab_fetch (state) == NULL)
+ return NULL;
+ return fstab_convert (state);
}
+
struct fstab *
-getfsspec(name)
- register const char *name;
+getfsspec (name)
+ const char *name;
{
- if (setfsent())
- while (fstabscan())
- if (!strcmp(_fs_fstab.fs_spec, name))
- return(&_fs_fstab);
- return((struct fstab *)NULL);
+ struct fstab_state *state;
+ struct mntent *m;
+
+ state = fstab_init (1);
+ if (state == NULL)
+ return NULL;
+ while ((m = fstab_fetch (state)) != NULL)
+ if (strcmp (m->mnt_fsname, name) == 0)
+ return fstab_convert (state);
+ return NULL;
}
+
struct fstab *
-getfsfile(name)
- register const char *name;
+getfsfile (name)
+ const char *name;
{
- if (setfsent())
- while (fstabscan())
- if (!strcmp(_fs_fstab.fs_file, name))
- return(&_fs_fstab);
- return((struct fstab *)NULL);
+ struct fstab_state *state;
+ struct mntent *m;
+
+ state = fstab_init (1);
+ if (state == NULL)
+ return NULL;
+ while ((m = fstab_fetch (state)) != NULL)
+ if (strcmp (m->mnt_dir, name) == 0)
+ return fstab_convert (state);
+ return NULL;
}
-setfsent()
+
+void
+endfsent ()
{
- if (_fs_fp) {
- rewind(_fs_fp);
- return(1);
- }
- if (_fs_fp = fopen(_PATH_FSTAB, "r"))
- return(1);
- error(errno);
- return(0);
+ struct fstab_state *state;
+
+ state = &fstab_state;
+ if (state->fs_fp != NULL)
+ {
+ (void) __endmntent (state->fs_fp);
+ state->fs_fp = NULL;
+ }
}
-void
-endfsent()
+
+static struct fstab_state *
+fstab_init (int opt_rewind)
+{
+ struct fstab_state *state;
+ char *buffer;
+ FILE *fp;
+
+ state = &fstab_state;
+
+ buffer = state->fs_buffer;
+ if (buffer == NULL)
+ {
+ buffer = (char *) malloc (BUFFER_SIZE);
+ if (buffer == NULL)
+ return NULL;
+ state->fs_buffer = buffer;
+ }
+
+ fp = state->fs_fp;
+ if (fp != NULL)
+ {
+ if (opt_rewind)
+ rewind (fp);
+ }
+ else
+ {
+ fp = __setmntent (_PATH_FSTAB, "r");
+ if (fp == NULL)
+ return NULL;
+ state->fs_fp = fp;
+ }
+
+ return state;
+}
+
+
+static struct mntent *
+fstab_fetch (struct fstab_state *state)
{
- if (_fs_fp) {
- (void)fclose(_fs_fp);
- _fs_fp = NULL;
- }
+ return __getmntent_r (state->fs_fp, &state->fs_mntres,
+ state->fs_buffer, BUFFER_SIZE);
}
-static
-error(err)
- int err;
+
+static struct fstab *
+fstab_convert (struct fstab_state *state)
{
- 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);
+ struct mntent *m;
+ struct fstab *f;
+
+ m = &state->fs_mntres;
+ f = &state->fs_ret;
+
+ 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) ? FSTAB_RW :
+ __hasmntopt (m, FSTAB_RQ) ? FSTAB_RQ :
+ __hasmntopt (m, FSTAB_RO) ? FSTAB_RO :
+ __hasmntopt (m, FSTAB_SW) ? FSTAB_SW :
+ __hasmntopt (m, FSTAB_XX) ? FSTAB_XX :
+ "??");
+ f->fs_freq = m->mnt_freq;
+ f->fs_passno = m->mnt_passno;
+ return f;
}
+
+
+/* Make sure the memory is freed if the programs ends while in
+ memory-debugging mode and something actually was allocated. */
+static void
+__attribute__ ((unused))
+fstab_free (void)
+{
+ char *buffer;
+
+ buffer = fstab_state.fs_buffer;
+ if (buffer != NULL)
+ free ((void *) buffer);
+}
+
+text_set_element (__libc_subfreeres, fstab_free);
projects / kopensolaris-gnu / glibc.git / blobdiff