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
26 * $FreeBSD: src/usr.sbin/rpc.umntall/rpc.umntall.c,v 1.13 2005/05/27 00:05:16 mux Exp $
27 * $DragonFly: src/usr.sbin/rpc.umntall/rpc.umntall.c,v 1.7 2008/11/12 21:44:59 swildner Exp $
30 #include <sys/param.h>
31 #include <sys/ucred.h>
32 #include <sys/mount.h>
35 #include <rpc/pmap_clnt.h>
36 #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);
56 int xdr_dir (XDR *, char *);
59 main(int argc, char **argv) {
60 int ch, keep, success, pathlen;
63 struct mtablist *mtab;
67 success = keep = verbose = 0;
68 while ((ch = getopt(argc, argv, "h:kp:ve:")) != -1)
74 expire = atoi(optarg);
93 /* Default expiretime is one day */
98 /* Read PATH_MOUNTTAB. */
101 warnx("no mounttab entries (%s does not exist)",
106 if (host == NULL && path == NULL) {
107 /* Check each entry and do any necessary unmount RPCs. */
108 for (mtab = mtabhead; mtab != NULL; mtab = mtab->mtab_next) {
109 if (*mtab->mtab_host == '\0')
111 if (mtab->mtab_time + expire < now) {
112 /* Clear expired entry. */
114 warnx("remove expired entry %s:%s",
115 mtab->mtab_host, mtab->mtab_dirp);
116 bzero(mtab->mtab_host,
117 sizeof(mtab->mtab_host));
120 if (keep && is_mounted(mtab->mtab_host,
123 warnx("skip entry %s:%s",
124 mtab->mtab_host, mtab->mtab_dirp);
127 if (do_umount(mtab->mtab_host, mtab->mtab_dirp)) {
129 warnx("umount RPC for %s:%s succeeded",
130 mtab->mtab_host, mtab->mtab_dirp);
131 /* Remove all entries for this host + path. */
132 clean_mtab(mtab->mtab_host, mtab->mtab_dirp,
138 if (host == NULL && path != NULL)
139 /* Missing hostname. */
142 /* Do a RPC UMNTALL for this specific host */
143 success = do_umntall(host);
144 if (verbose && success)
145 warnx("umntall RPC for %s succeeded", host);
147 /* Do a RPC UMNTALL for this specific mount */
148 for (pathlen = strlen(path);
149 pathlen > 1 && path[pathlen - 1] == '/'; pathlen--)
150 path[pathlen - 1] = '\0';
151 success = do_umount(host, path);
152 if (verbose && success)
153 warnx("umount RPC for %s:%s succeeded", host,
156 /* If successful, remove any corresponding mounttab entries. */
158 clean_mtab(host, path, verbose);
160 /* Write and unlink PATH_MOUNTTAB if necessary */
162 success = write_mtab(verbose);
164 exit (success ? 0 : 1);
168 * Send a RPC_MNT UMNTALL request to hostname.
169 * XXX This works for all mountd implementations,
170 * but produces a RPC IOERR on non FreeBSD systems.
173 do_umntall(char *hostname) {
174 enum clnt_stat clnt_stat;
180 clp = clnt_create_timed(hostname, RPCPROG_MNT, RPCMNT_VER1, "udp",
183 warnx("%s: %s", hostname, clnt_spcreateerror("RPCPROG_MNT"));
186 clp->cl_auth = authunix_create_default();
187 clnt_stat = clnt_call(clp, RPCMNT_UMNTALL,
188 (xdrproc_t)xdr_void, (caddr_t)0,
189 (xdrproc_t)xdr_void, (caddr_t)0, try);
190 if (clnt_stat != RPC_SUCCESS)
191 warnx("%s: %s", hostname, clnt_sperror(clp, "RPCMNT_UMNTALL"));
192 auth_destroy(clp->cl_auth);
194 return (clnt_stat == RPC_SUCCESS);
198 * Send a RPC_MNT UMOUNT request for dirp to hostname.
201 do_umount(char *hostname, char *dirp) {
202 enum clnt_stat clnt_stat;
208 clp = clnt_create_timed(hostname, RPCPROG_MNT, RPCMNT_VER1, "udp",
211 warnx("%s: %s", hostname, clnt_spcreateerror("RPCPROG_MNT"));
214 clp->cl_auth = authsys_create_default();
215 clnt_stat = clnt_call(clp, RPCMNT_UMOUNT, (xdrproc_t)xdr_dir, dirp,
216 (xdrproc_t)xdr_void, (caddr_t)0, try);
217 if (clnt_stat != RPC_SUCCESS)
218 warnx("%s: %s", hostname, clnt_sperror(clp, "RPCMNT_UMOUNT"));
219 auth_destroy(clp->cl_auth);
221 return (clnt_stat == RPC_SUCCESS);
225 * Check if the entry is still/already mounted.
228 is_mounted(char *hostname, char *dirp) {
229 struct statfs *mntbuf;
230 char name[MNAMELEN + 1];
234 if (strlen(hostname) + strlen(dirp) >= MNAMELEN)
236 snprintf(name, sizeof(name), "%s:%s", hostname, dirp);
237 mntsize = getfsstat(NULL, 0, MNT_NOWAIT);
240 bufsize = (mntsize + 1) * sizeof(struct statfs);
241 if ((mntbuf = malloc(bufsize)) == NULL)
243 mntsize = getfsstat(mntbuf, (long)bufsize, MNT_NOWAIT);
244 for (i = mntsize - 1; i >= 0; i--) {
245 if (strcmp(mntbuf[i].f_mntfromname, name) == 0) {
255 * xdr routines for mount rpc's
258 xdr_dir(XDR *xdrsp, char *dirp) {
259 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
264 fprintf(stderr, "%s\n",
265 "usage: rpc.umntall [-kv] [-e expire] [-h host] [-p path]");