2 * Copyright (c) 1980, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)fstab.c 8.1 (Berkeley) 6/4/93
30 * $FreeBSD: src/lib/libc/gen/fstab.c,v 1.15 2007/01/09 00:27:53 imp Exp $
31 * $DragonFly: src/lib/libc/gen/fstab.c,v 1.6 2005/11/13 00:07:42 swildner Exp $
34 #include "namespace.h"
35 #include <sys/param.h>
36 #include <sys/mount.h>
46 #include "un-namespace.h"
49 static struct fstab _fs_fstab;
50 static int LineNo = 0;
51 static char *path_fstab;
52 static char fstab_path[PATH_MAX];
53 static int fsp_set = 0;
55 static void error(int);
56 static void fixfsfile(void);
57 static int fstabscan(void);
60 setfstab(const char *file)
64 path_fstab = _PATH_FSTAB;
66 strncpy(fstab_path, file, PATH_MAX);
67 fstab_path[PATH_MAX - 1] = '\0';
68 path_fstab = fstab_path;
86 static char buf[sizeof(_PATH_DEV) + MNAMELEN];
90 if (strcmp(_fs_fstab.fs_file, "/") != 0)
92 if (statfs("/", &sf) != 0)
94 if (sf.f_mntfromname[0] == '/')
97 strcpy(buf, _PATH_DEV);
98 strcat(buf, sf.f_mntfromname);
99 if (stat(buf, &sb) != 0 ||
100 (!S_ISBLK(sb.st_mode) && !S_ISCHR(sb.st_mode)))
102 _fs_fstab.fs_spec = buf;
109 #define MAXLINELENGTH 1024
110 static char line[MAXLINELENGTH];
111 char subline[MAXLINELENGTH];
116 if (!(p = fgets(line, sizeof(line), _fs_fp)))
118 /* OLD_STYLE_FSTAB */
120 if (*line == '#' || *line == '\n')
122 if (!strpbrk(p, " \t")) {
123 _fs_fstab.fs_spec = strsep(&p, ":\n");
124 _fs_fstab.fs_file = strsep(&p, ":\n");
126 _fs_fstab.fs_type = strsep(&p, ":\n");
127 if (_fs_fstab.fs_type) {
128 if (!strcmp(_fs_fstab.fs_type, FSTAB_XX))
130 _fs_fstab.fs_mntops = _fs_fstab.fs_type;
131 _fs_fstab.fs_vfstype =
132 strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
134 if ((cp = strsep(&p, ":\n")) != NULL) {
135 _fs_fstab.fs_freq = atoi(cp);
136 if ((cp = strsep(&p, ":\n")) != NULL) {
137 _fs_fstab.fs_passno = atoi(cp);
144 /* OLD_STYLE_FSTAB */
145 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
147 _fs_fstab.fs_spec = cp;
148 if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
150 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
152 _fs_fstab.fs_file = cp;
154 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
156 _fs_fstab.fs_vfstype = cp;
157 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
159 _fs_fstab.fs_mntops = cp;
160 if (_fs_fstab.fs_mntops == NULL)
162 _fs_fstab.fs_freq = 0;
163 _fs_fstab.fs_passno = 0;
164 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
167 _fs_fstab.fs_freq = atoi(cp);
168 while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
171 _fs_fstab.fs_passno = atoi(cp);
173 strcpy(subline, _fs_fstab.fs_mntops);
175 for (typexx = 0, cp = strsep(&p, ","); cp;
176 cp = strsep(&p, ",")) {
179 if (!strcmp(cp, FSTAB_RW)) {
180 _fs_fstab.fs_type = FSTAB_RW;
183 if (!strcmp(cp, FSTAB_RQ)) {
184 _fs_fstab.fs_type = FSTAB_RQ;
187 if (!strcmp(cp, FSTAB_RO)) {
188 _fs_fstab.fs_type = FSTAB_RO;
191 if (!strcmp(cp, FSTAB_SW)) {
192 _fs_fstab.fs_type = FSTAB_SW;
195 if (!strcmp(cp, FSTAB_XX)) {
196 _fs_fstab.fs_type = FSTAB_XX;
206 bad: /* no way to distinguish between EOF and syntax error */
215 if ((!_fs_fp && !setfsent()) || !fstabscan())
221 getfsspec(const char *name)
225 if (!strcmp(_fs_fstab.fs_spec, name))
231 getfsfile(const char *name)
235 if (!strcmp(_fs_fstab.fs_file, name))
252 setfstab(getenv("PATH_FSTAB"));
254 if ((_fs_fp = fopen(path_fstab, "r")) != NULL) {
279 _write(STDERR_FILENO, "fstab: ", 7);
280 _write(STDERR_FILENO, path_fstab, strlen(path_fstab));
281 _write(STDERR_FILENO, ":", 1);
282 sprintf(num, "%d: ", LineNo);
283 _write(STDERR_FILENO, num, strlen(num));
285 _write(STDERR_FILENO, p, strlen(p));
286 _write(STDERR_FILENO, "\n", 1);