2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software donated to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 "@(#) Copyright (c) 1992, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
44 static char sccsid[] = "@(#)mount_portal.c 8.4 (Berkeley) 3/27/94";
47 #include <sys/param.h>
49 #include <sys/socket.h>
51 #include <sys/syslog.h>
52 #include <sys/mount.h>
63 #include "pathnames.h"
66 struct mntopt mopts[] = {
71 static void usage __P((void));
73 static sig_atomic_t readcf; /* Set when SIGHUP received */
75 static void sigchld(sig)
80 while ((pid = waitpid((pid_t) -1, (int *) 0, WNOHANG)) > 0)
83 syslog(LOG_WARNING, "waitpid: %s", strerror(errno));
91 struct portal_args args;
92 struct sockaddr_un un;
105 * Crack command line args
109 while ((ch = getopt(argc, argv, "o:")) != EOF) {
112 getmntopts(optarg, mopts, &mntflags, 0);
120 if (optind != (argc - 2))
127 * Get config file and mount point
130 mountpt = argv[optind+1];
133 * Construct the listening socket
135 un.sun_family = AF_UNIX;
136 if (sizeof(_PATH_TMPPORTAL) >= sizeof(un.sun_path)) {
137 fprintf(stderr, "mount_portal: portal socket name too long\n");
140 strcpy(un.sun_path, _PATH_TMPPORTAL);
142 un.sun_len = strlen(un.sun_path);
144 so = socket(AF_UNIX, SOCK_STREAM, 0);
146 fprintf(stderr, "mount_portal: socket: %s\n", strerror(errno));
149 (void) unlink(un.sun_path);
150 if (bind(so, (struct sockaddr *) &un, sizeof(un)) < 0)
152 (void) unlink(un.sun_path);
154 (void) listen(so, 5);
157 sprintf(tag, "portal:%d", getpid());
158 args.pa_config = tag;
160 vfc = getvfsbyname("portal");
161 if(!vfc && vfsisloadable("portal")) {
162 if(vfsload("portal"))
163 err(1, "vfsload(portal)");
164 endvfsent(); /* flush cache */
165 vfc = getvfsbyname("portal");
168 rc = mount(vfc ? vfc->vfc_index : MOUNT_PORTAL, mountpt, mntflags, &args);
174 * Everything is ready to go - now is a good time to fork
180 * Start logging (and change name)
182 openlog("portald", LOG_CONS|LOG_PID, LOG_DAEMON);
184 q.q_forw = q.q_back = &q;
187 signal(SIGCHLD, sigchld);
190 * Just loop waiting for new connections and activating them
193 struct sockaddr_un un2;
194 int len2 = sizeof(un2);
201 * Check whether we need to re-read the configuration file
210 * Accept a new connection
211 * Will get EINTR if a signal has arrived, so just
212 * ignore that error code
215 rc = select(so+1, &fdset, (void *) 0, (void *) 0, (void *) 0);
219 syslog(LOG_ERR, "select: %s", strerror(errno));
224 so2 = accept(so, (struct sockaddr *) &un2, &len2);
227 * The unmount function does a shutdown on the socket
228 * which will generated ECONNABORTED on the accept.
230 if (errno == ECONNABORTED)
232 if (errno != EINTR) {
233 syslog(LOG_ERR, "accept: %s", strerror(errno));
240 * Now fork a new child to deal with the connection
243 switch (pid = fork()) {
245 if (errno == EAGAIN) {
249 syslog(LOG_ERR, "fork: %s", strerror(errno));
260 syslog(LOG_INFO, "%s unmounted", mountpt);
267 (void)fprintf(stderr,
268 "usage: mount_portal [-o options] config mount-point\n");