2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * 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
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/types.h>
37 #include <sys/syslimits.h>
38 #include <vfs/hammer/hammer_mount.h>
39 #include <vfs/hammer/hammer_disk.h>
51 static void test_master_id(int master_id);
52 static void extract_volumes(struct hammer_mount_info *info, char **av, int ac);
53 static void free_volumes(struct hammer_mount_info *info);
54 static void test_volumes(struct hammer_mount_info *info);
55 static void usage(void);
57 #define hwarnx(format, args...) warnx("WARNING: "format,## args)
59 #define MOPT_HAMMEROPTS \
60 { "history", 1, HMNT_NOHISTORY, 1 }, \
61 { "master=", 0, HMNT_MASTERID, 1 }, \
62 { "mirror", 1, HMNT_NOMIRROR, 1 }
64 static struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_HAMMEROPTS,
65 MOPT_UPDATE, MOPT_NULL };
68 main(int ac, char **av)
70 struct hammer_mount_info info;
79 bzero(&info, sizeof(info));
81 while ((ch = getopt(ac, av, "o:T:u")) != -1) {
84 info.asof = strtoull(optarg, NULL, 0);
87 getmntopts(optarg, mopts, &mount_flags, &info.hflags);
90 * Handle extended flags with parameters.
92 if (info.hflags & HMNT_MASTERID) {
93 ptr = strstr(optarg, "master=");
95 info.master_id = strtol(ptr + 7, NULL, 0);
96 test_master_id(info.master_id);
99 if (info.hflags & HMNT_NOMIRROR) {
100 ptr = strstr(optarg, "nomirror");
106 init_flags |= MNT_UPDATE;
116 mount_flags |= init_flags;
119 * Only the mount point need be specified in update mode.
121 if (init_flags & MNT_UPDATE) {
127 if (mount(vfc.vfc_name, mountpt, mount_flags, &info)) {
128 err(1, "mountpoint %s", mountpt);
140 * Mount arguments: vol [vol...] mountpt
142 extract_volumes(&info, av, ac - 1);
143 mountpt = av[ac - 1];
146 * Load the hammer module if necessary (this bit stolen from
149 error = getvfsbyname("hammer", &vfc);
150 if (error && vfsisloadable("hammer")) {
151 if (vfsload("hammer") != 0) {
152 err(1, "vfsload(hammer)");
156 error = getvfsbyname("hammer", &vfc);
159 errx(1, "hammer filesystem is not available");
163 if (mount(vfc.vfc_name, mountpt, mount_flags, &info)) {
173 static void test_master_id(int master_id)
177 hwarnx("A master id of 0 is the default, "
178 "explicit settings should use 1-15");
181 hwarnx("A master id of -1 is nomirror mode, "
182 "equivalent to -o nomirror option");
184 case 1 ... 15: /* gcc */
185 /* Expected values via -o master= option */
188 /* This will eventually fail in hammer_vfs_mount() */
189 hwarnx("A master id of %d is not supported", master_id);
195 * Extract a volume list
199 extract_volumes(struct hammer_mount_info *info, char **av, int ac)
203 char **ary = malloc(sizeof(char *) * arymax);
211 ary = realloc(ary, sizeof(char *) * arymax);
213 if (strchr(*av, ':') == NULL) {
214 ary[idx++] = strdup(*av);
216 orig = next = strdup(*av);
217 while ((ptr = next) != NULL) {
220 ary = realloc(ary, sizeof(char *) *
223 if ((next = strchr(ptr, ':')) != NULL)
225 ary[idx++] = strdup(ptr);
232 info->nvolumes = idx;
238 free_volumes(struct hammer_mount_info *info)
242 for (i = 0; i < info->nvolumes; i++)
243 free(info->volumes[i]);
248 * This function is based on __verify_volume() in sbin/hammer/ondisk.c.
252 __verify_volume(hammer_volume_ondisk_t ondisk,
253 const char *vol_name, int vol_count)
255 if (ondisk->vol_signature != HAMMER_FSBUF_VOLUME) {
256 errx(1, "%s: Invalid volume signature %016jx",
257 vol_name, ondisk->vol_signature);
260 if (ondisk->vol_count != vol_count) {
261 errx(1, "%s: Invalid volume count %d, "
262 "volume header says %d volumes",
263 vol_name, vol_count, ondisk->vol_count);
266 if (ondisk->vol_rootvol != HAMMER_ROOT_VOLNO) {
267 errx(1, "%s: Invalid root volume# %d",
268 vol_name, ondisk->vol_rootvol);
271 if (ondisk->vol_version < HAMMER_VOL_VERSION_MIN ||
272 ondisk->vol_version >= HAMMER_VOL_VERSION_WIP) {
273 errx(1, "%s: Invalid volume version %u",
274 vol_name, ondisk->vol_version);
280 * This function prints a possible reason that mount(2) failed,
281 * which isn't really necessary as the real reason is likely to
282 * be in dmesg anyway, but was originally added by 1a607e3e.
286 test_volumes(struct hammer_mount_info *info)
289 char buf[2048]; /* sizeof(*ondisk) is 1928 */
290 hammer_volume_ondisk_t ondisk = (hammer_volume_ondisk_t)buf;
292 for (i = 0; i < info->nvolumes; i++) {
293 const char *vol = info->volumes[i];
294 fd = open(vol, O_RDONLY);
296 err(1, "%s: Failed to open", vol);
300 bzero(buf, sizeof(buf));
301 if (pread(fd, buf, sizeof(buf), 0) != sizeof(buf)) {
302 err(1, "%s: Failed to read volume header", vol);
306 __verify_volume(ondisk, vol, info->nvolumes);
315 fprintf(stderr, "usage: mount_hammer [-o options] [-T transaction-id] "
316 "special ... node\n");
317 fprintf(stderr, " mount_hammer [-o options] [-T transaction-id] "
318 "special[:special]* node\n");
319 fprintf(stderr, " mount_hammer -u [-o options] node\n");