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. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#) Copyright (c) 1992, 1993, 1994 The Regents of the University of California. All rights reserved.
33 * @(#)mount_portal.c 8.6 (Berkeley) 4/26/95
34 * $FreeBSD: src/sbin/mount_portal/mount_portal.c,v 1.16 1999/10/09 11:54:11 phk Exp $
37 #include <sys/param.h>
39 #include <sys/socket.h>
42 #include <sys/syslog.h>
43 #include <sys/mount.h>
54 #include "pathnames.h"
57 struct mntopt mopts
[] = {
62 static void usage(void) __dead2
;
64 static sig_atomic_t readcf
; /* Set when SIGHUP received */
67 sighup(int sig __unused
)
73 sigchld(int sig __unused
)
77 while ((pid
= waitpid((pid_t
) -1, NULL
, WNOHANG
)) > 0)
79 /* wrtp - waitpid _doesn't_ return 0 when no children! */
81 if (pid
< 0 && errno
!= ECHILD
)
82 syslog(LOG_WARNING
, "waitpid: %s", strerror(errno
));
87 main(int argc
, char **argv
)
89 struct portal_args args
;
90 struct sockaddr_un un
;
92 char mountpt
[MAXPATHLEN
];
104 * Crack command line args
108 while ((ch
= getopt(argc
, argv
, "o:")) != -1) {
111 getmntopts(optarg
, mopts
, &mntflags
, 0);
119 if (optind
!= (argc
- 2))
126 * Get config file and mount point
130 /* resolve the mountpoint with realpath(3) */
131 checkpath(argv
[optind
+1], mountpt
);
134 * Construct the listening socket
136 un
.sun_family
= AF_UNIX
;
137 if (sizeof(_PATH_TMPPORTAL
) >= sizeof(un
.sun_path
)) {
138 errx(EX_SOFTWARE
, "portal socket name too long");
140 strcpy(un
.sun_path
, _PATH_TMPPORTAL
);
142 un
.sun_len
= strlen(un
.sun_path
);
144 so
= socket(AF_UNIX
, SOCK_STREAM
, 0);
146 err(EX_OSERR
, "socket");
150 if (bind(so
, (struct sockaddr
*) &un
, sizeof(un
)) < 0)
159 sprintf(tag
, "portal:%d", getpid());
160 args
.pa_config
= tag
;
162 error
= getvfsbyname("portal", &vfc
);
163 if (error
&& vfsisloadable("portal")) {
164 if (vfsload("portal"))
165 err(EX_OSERR
, "vfsload(portal)");
167 error
= getvfsbyname("portal", &vfc
);
170 errx(EX_OSERR
, "portal filesystem is not available");
172 rc
= mount(vfc
.vfc_name
, mountpt
, mntflags
, &args
);
177 * Everything is ready to go - now is a good time to fork
184 * Start logging (and change name)
186 openlog("portald", LOG_CONS
|LOG_PID
, LOG_DAEMON
);
188 q
.q_forw
= q
.q_back
= &q
;
191 signal(SIGCHLD
, sigchld
);
192 signal(SIGHUP
, sighup
);
195 * Just loop waiting for new connections and activating them
198 struct sockaddr_un un2
;
199 socklen_t len2
= sizeof(un2
);
205 * Check whether we need to re-read the configuration file
209 printf ("re-reading configuration file\n");
217 * Accept a new connection
218 * Will get EINTR if a signal has arrived, so just
219 * ignore that error code
223 rc
= select(so
+1, &fdset
, NULL
, NULL
, NULL
);
227 syslog(LOG_ERR
, "select: %s", strerror(errno
));
232 so2
= accept(so
, (struct sockaddr
*) &un2
, &len2
);
235 * The unmount function does a shutdown on the socket
236 * which will generated ECONNABORTED on the accept.
238 if (errno
== ECONNABORTED
)
240 if (errno
!= EINTR
) {
241 syslog(LOG_ERR
, "accept: %s", strerror(errno
));
248 * Now fork a new child to deal with the connection
251 switch (pid
= fork()) {
253 if (errno
== EAGAIN
) {
257 syslog(LOG_ERR
, "fork: %s", strerror(errno
));
268 syslog(LOG_INFO
, "%s unmounted", mountpt
);
276 "usage: mount_portal [-o options] config mount-point\n");