2 * Copyright (c) 2011-2015 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@dragonflybsd.org>
6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/types.h>
36 #include <sys/param.h>
37 #include <sys/mount.h>
38 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <vfs/hammer2/hammer2_mount.h>
51 static int cluster_connect(const char *volume);
52 static void usage(const char *ctl, ...);
54 static struct mntopt mopts[] = {
56 { "update", 0, MNT_UPDATE, 0 },
57 { "local", 0, HMNT2_LOCAL, 1 },
62 * Usage: mount_hammer2 [volume] [mtpt]
65 main(int ac, char *av[])
67 struct hammer2_mount_info info;
76 bzero(&info, sizeof(info));
80 while ((ch = getopt(ac, av, "o:u")) != -1) {
83 getmntopts(optarg, mopts, &mount_flags, &info.hflags);
86 init_flags |= MNT_UPDATE;
89 usage("unknown option: -%c", ch);
95 mount_flags |= init_flags;
97 error = getvfsbyname("hammer2", &vfc);
99 fprintf(stderr, "hammer2 vfs not loaded\n");
104 * Only the mount point need be specified in update mode.
106 if (init_flags & MNT_UPDATE) {
108 usage("missing parameter (node)");
112 if (mount(vfc.vfc_name, mountpt, mount_flags, &info))
113 usage("mount %s: %s", mountpt, strerror(errno));
121 usage("missing parameter(s) (special[@label] node)");
125 devpath = strdup(av[0]);
128 if (devpath[0] == 0) {
129 fprintf(stderr, "mount_hammer2: empty device path\n");
134 * Automatically add @BOOT, @ROOT, or @DATA if no label specified,
135 * based on the slice.
137 if (strchr(devpath, '@') == NULL) {
140 slice = devpath[strlen(devpath)-1];
144 asprintf(&devpath, "%s@BOOT", devpath);
147 asprintf(&devpath, "%s@ROOT", devpath);
150 asprintf(&devpath, "%s@DATA", devpath);
156 * Connect to the cluster controller. This handles both remote
157 * mounts and device cache/master/slave mounts.
159 * When doing remote mounts that are allowed to run in the background
160 * the mount program will fork, detach, print a message, and exit(0)
161 * the originator while retrying in the background.
163 * Don't exit on failure, this isn't likely going to work for
164 * the root [re]mount in early boot.
166 info.cluster_fd = cluster_connect(devpath);
167 if (info.cluster_fd < 0) {
169 "mount_hammer2: cluster_connect(%s) failed\n",
174 * Try to mount it, prefix if necessary.
176 if (devpath[0] != '/' && devpath[0] != '@') {
178 asprintf(&p2, "/dev/%s", devpath);
182 info.volume = devpath;
184 error = mount(vfc.vfc_name, mountpt, mount_flags, &info);
186 if (errno == ERANGE) {
188 "%s integrated with %s\n",
189 info.volume, mountpt);
198 * XXX fork a backgrounded reconnector process to handle connection
206 * Connect to the cluster controller. We can connect to a local or remote
207 * cluster controller, depending. For a multi-node cluster we always want
208 * to connect to the local controller and let it maintain the connections
209 * to the multiple remote nodes.
213 cluster_connect(const char *volume __unused)
215 struct sockaddr_in lsin;
219 * This starts the hammer2 service if it isn't already running,
220 * so we can connect to it.
222 system("/sbin/hammer2 -q service");
225 * Connect us to the service but leave the rest to the kernel.
226 * If the connection is lost during the mount
228 if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
232 bzero(&lsin, sizeof(lsin));
233 lsin.sin_family = AF_INET;
234 lsin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
235 lsin.sin_port = htons(DMSG_LISTEN_PORT);
237 if (connect(fd, (struct sockaddr *)&lsin, sizeof(lsin)) < 0) {
239 fprintf(stderr, "mount_hammer2: unable to connect to "
240 "cluster controller\n");
249 usage(const char *ctl, ...)
254 fprintf(stderr, "mount_hammer2: ");
255 vfprintf(stderr, ctl, va);
257 fprintf(stderr, "\n");
258 fprintf(stderr, " mount_hammer2 [-o options] special[@label] node\n");
259 fprintf(stderr, " mount_hammer2 [-o options] @label node\n");
260 fprintf(stderr, " mount_hammer2 -u [-o options] node\n");
261 fprintf(stderr, "\n");
262 fprintf(stderr, "options:\n"
263 " <standard_mount_options>\n"
264 " local\t- disable PFS clustering for whole device\n"