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
29 static const char rcsid[] =
30 "$FreeBSD: src/usr.sbin/rpc.umntall/rpc.umntall.c,v 1.3.2.1 2001/12/13 01:27:20 iedowse Exp $";
33 #include <sys/param.h>
34 #include <sys/ucred.h>
35 #include <sys/mount.h>
38 #include <nfs/rpcv2.h>
51 static int do_umount (char *, char *);
52 static int do_umntall (char *);
53 static int is_mounted (char *, char *);
54 static void usage (void);
55 int xdr_dir (XDR *, char *);
58 main(int argc, char **argv) {
59 int ch, keep, success, pathlen;
62 struct mtablist *mtab;
66 success = keep = verbose = 0;
67 while ((ch = getopt(argc, argv, "h:kp:ve:")) != -1)
73 expire = atoi(optarg);
91 /* Default expiretime is one day */
96 /* Read PATH_MOUNTTAB. */
99 warnx("no mounttab entries (%s does not exist)",
104 if (host == NULL && path == NULL) {
105 /* Check each entry and do any necessary unmount RPCs. */
106 for (mtab = mtabhead; mtab != NULL; mtab = mtab->mtab_next) {
107 if (*mtab->mtab_host == '\0')
109 if (mtab->mtab_time + expire < now) {
110 /* Clear expired entry. */
112 warnx("remove expired entry %s:%s",
113 mtab->mtab_host, mtab->mtab_dirp);
114 bzero(mtab->mtab_host,
115 sizeof(mtab->mtab_host));
118 if (keep && is_mounted(mtab->mtab_host,
121 warnx("skip entry %s:%s",
122 mtab->mtab_host, mtab->mtab_dirp);
125 if (do_umount(mtab->mtab_host, mtab->mtab_dirp)) {
127 warnx("umount RPC for %s:%s succeeded",
128 mtab->mtab_host, mtab->mtab_dirp);
129 /* Remove all entries for this host + path. */
130 clean_mtab(mtab->mtab_host, mtab->mtab_dirp,
136 if (host == NULL && path != NULL)
137 /* Missing hostname. */
140 /* Do a RPC UMNTALL for this specific host */
141 success = do_umntall(host);
142 if (verbose && success)
143 warnx("umntall RPC for %s succeeded", host);
145 /* Do a RPC UMNTALL for this specific mount */
146 for (pathlen = strlen(path);
147 pathlen > 1 && path[pathlen - 1] == '/'; pathlen--)
148 path[pathlen - 1] = '\0';
149 success = do_umount(host, path);
150 if (verbose && success)
151 warnx("umount RPC for %s:%s succeeded", host,
154 /* If successful, remove any corresponding mounttab entries. */
156 clean_mtab(host, path, verbose);
158 /* Write and unlink PATH_MOUNTTAB if necessary */
160 success = write_mtab(verbose);
162 exit (success ? 0 : 1);
166 * Send a RPC_MNT UMNTALL request to hostname.
167 * XXX This works for all mountd implementations,
168 * but produces a RPC IOERR on non FreeBSD systems.
171 do_umntall(char *hostname) {
172 enum clnt_stat clnt_stat;
174 struct sockaddr_in saddr;
175 struct timeval pertry, try;
179 if ((hp = gethostbyname(hostname)) == NULL) {
180 warnx("gethostbyname(%s) failed", hostname);
183 memset(&saddr, 0, sizeof(saddr));
184 saddr.sin_family = AF_INET;
186 memmove(&saddr.sin_addr, hp->h_addr, MIN(hp->h_length,
187 sizeof(saddr.sin_addr)));
191 clp = clntudp_create(&saddr, RPCPROG_MNT, RPCMNT_VER1, pertry, &so);
193 warnx("%s: %s", hostname, clnt_spcreateerror("RPCPROG_MNT"));
196 clp->cl_auth = authunix_create_default();
199 clnt_stat = clnt_call(clp, RPCMNT_UMNTALL, xdr_void, (caddr_t)0,
200 xdr_void, (caddr_t)0, try);
201 if (clnt_stat != RPC_SUCCESS)
202 warnx("%s: %s", hostname, clnt_sperror(clp, "RPCMNT_UMNTALL"));
203 auth_destroy(clp->cl_auth);
205 return (clnt_stat == RPC_SUCCESS);
209 * Send a RPC_MNT UMOUNT request for dirp to hostname.
212 do_umount(char *hostname, char *dirp) {
213 enum clnt_stat clnt_stat;
215 struct sockaddr_in saddr;
216 struct timeval pertry, try;
220 if ((hp = gethostbyname(hostname)) == NULL) {
221 warnx("gethostbyname(%s) failed", hostname);
224 memset(&saddr, 0, sizeof(saddr));
225 saddr.sin_family = AF_INET;
227 memmove(&saddr.sin_addr, hp->h_addr, MIN(hp->h_length,
228 sizeof(saddr.sin_addr)));
232 clp = clntudp_create(&saddr, RPCPROG_MNT, RPCMNT_VER1, pertry, &so);
234 warnx("%s: %s", hostname, clnt_spcreateerror("RPCPROG_MNT"));
237 clp->cl_auth = authunix_create_default();
240 clnt_stat = clnt_call(clp, RPCMNT_UMOUNT, xdr_dir, dirp,
241 xdr_void, (caddr_t)0, try);
242 if (clnt_stat != RPC_SUCCESS)
243 warnx("%s: %s", hostname, clnt_sperror(clp, "RPCMNT_UMOUNT"));
244 auth_destroy(clp->cl_auth);
246 return (clnt_stat == RPC_SUCCESS);
250 * Check if the entry is still/already mounted.
253 is_mounted(char *hostname, char *dirp) {
254 struct statfs *mntbuf;
255 char name[MNAMELEN + 1];
259 if (strlen(hostname) + strlen(dirp) >= MNAMELEN)
261 snprintf(name, sizeof(name), "%s:%s", hostname, dirp);
262 mntsize = getfsstat(NULL, 0, MNT_NOWAIT);
265 bufsize = (mntsize + 1) * sizeof(struct statfs);
266 if ((mntbuf = malloc(bufsize)) == NULL)
268 mntsize = getfsstat(mntbuf, (long)bufsize, MNT_NOWAIT);
269 for (i = mntsize - 1; i >= 0; i--) {
270 if (strcmp(mntbuf[i].f_mntfromname, name) == 0) {
280 * xdr routines for mount rpc's
283 xdr_dir(XDR *xdrsp, char *dirp) {
284 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
289 (void)fprintf(stderr, "%s\n",
290 "usage: rpc.umntall [-kv] [-e expire] [-h host] [-p path]");