2 * Copyright (c) 1999 Martin Blapp
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/syslog.h>
34 #include <rpcsvc/mount.h>
46 struct mtablist *mtabhead;
48 static void badline(const char *field, const char *bad);
51 * Add an entry to PATH_MOUNTTAB for each mounted NFS filesystem,
52 * so the client can notify the NFS server even after reboot.
55 add_mtab(char *hostp, char *dirp)
59 if ((mtabfile = fopen(PATH_MOUNTTAB, "a")) == NULL)
62 fprintf(mtabfile, "%ld\t%s\t%s\n",
63 (long)time(NULL), hostp, dirp);
70 * Read mounttab line for line and return struct mtablist.
75 struct mtablist **mtabpp, *mtabp;
76 char *hostp, *dirp, *cp;
83 if ((mtabfile = fopen(PATH_MOUNTTAB, "r")) == NULL) {
87 syslog(LOG_ERR, "can't open %s", PATH_MOUNTTAB);
93 while (fgets(str, STRSIZ, mtabfile) != NULL) {
96 if (*cp == '#' || *cp == ' ' || *cp == '\n')
98 timep = strsep(&cp, " \t\n");
99 if (timep == NULL || *timep == '\0') {
100 badline("time", timep);
103 hostp = strsep(&cp, " \t\n");
104 if (hostp == NULL || *hostp == '\0') {
105 badline("host", hostp);
108 dirp = strsep(&cp, " \t\n");
109 if (dirp == NULL || *dirp == '\0') {
110 badline("dir", dirp);
113 ultmp = strtoul(timep, &endp, 10);
114 if (ultmp == ULONG_MAX || *endp != '\0') {
115 badline("time", timep);
119 if ((mtabp = malloc(sizeof (struct mtablist))) == NULL) {
120 syslog(LOG_ERR, "malloc");
124 mtabp->mtab_time = actiontime;
125 memmove(mtabp->mtab_host, hostp, MNTNAMLEN);
126 mtabp->mtab_host[MNTNAMLEN - 1] = '\0';
127 memmove(mtabp->mtab_dirp, dirp, MNTPATHLEN);
128 mtabp->mtab_dirp[MNTPATHLEN - 1] = '\0';
129 mtabp->mtab_next = (struct mtablist *)NULL;
131 mtabpp = &mtabp->mtab_next;
138 * Rewrite PATH_MOUNTTAB from scratch and skip bad entries.
139 * Unlink PATH_MOUNTAB if no entry is left.
142 write_mtab(int verbose)
144 struct mtablist *mtabp, *mp;
148 if ((mtabfile = fopen(PATH_MOUNTTAB, "w")) == NULL) {
149 syslog(LOG_ERR, "can't write to %s", PATH_MOUNTTAB);
153 for (mtabp = mtabhead; mtabp != NULL; mtabp = mtabp->mtab_next) {
154 if (mtabp->mtab_host[0] == '\0')
156 /* Skip if a later (hence more recent) entry is identical. */
157 for (mp = mtabp->mtab_next; mp != NULL; mp = mp->mtab_next)
158 if (strcmp(mtabp->mtab_host, mp->mtab_host) == 0 &&
159 strcmp(mtabp->mtab_dirp, mp->mtab_dirp) == 0)
164 fprintf(mtabfile, "%ld\t%s\t%s\n",
165 (long)mtabp->mtab_time, mtabp->mtab_host,
168 warnx("write mounttab entry %s:%s",
169 mtabp->mtab_host, mtabp->mtab_dirp);
174 if (unlink(PATH_MOUNTTAB) == -1) {
175 syslog(LOG_ERR, "can't remove %s", PATH_MOUNTTAB);
183 * Mark the entries as clean where RPC calls have been done successfully.
186 clean_mtab(char *hostp, char *dirp, int verbose)
188 struct mtablist *mtabp;
191 /* Copy hostp in case it points to an entry that we are zeroing out. */
192 host = strdup(hostp);
193 for (mtabp = mtabhead; mtabp != NULL; mtabp = mtabp->mtab_next) {
194 if (strcmp(mtabp->mtab_host, host) != 0)
196 if (dirp != NULL && strcmp(mtabp->mtab_dirp, dirp) != 0)
200 warnx("delete mounttab entry%s %s:%s",
201 (dirp == NULL) ? " by host" : "",
202 mtabp->mtab_host, mtabp->mtab_dirp);
203 bzero(mtabp->mtab_host, MNTNAMLEN);
209 * Free struct mtablist mtab.
214 struct mtablist *mtabp;
216 while ((mtabp = mtabhead) != NULL) {
217 mtabhead = mtabhead->mtab_next;
223 * Print bad lines to syslog.
226 badline(const char *field, const char *bad)
228 syslog(LOG_ERR, "bad mounttab %s field '%s'", field,
229 (bad == NULL) ? "<null>" : bad);