2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2005 Mark Santcroos <marks@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/param.h>
31 #include <sys/mount.h>
33 #include <ufs/ufs/dinode.h>
34 #include <ufs/ffs/fs.h>
45 static void find_inum(char *path);
46 static void usage(void);
47 static int compare_function(const char *, const struct stat *,
49 static int find_snapshot(struct statfs *sfs);
52 static int cont_search;
53 static uint32_t inode;
56 main(int argc, char **argv)
60 struct statfs *mntbuf;
61 int all = 0, ch, done = 0, fscount, n;
63 while ((ch = getopt(argc, argv, "adv")) != -1) {
69 /* continue to search when matching inode is found
70 * this feature is not documented */
84 if ((all == 0 && argc != 1) || (all == 1 && argc > 0))
88 char resolved[PATH_MAX];
92 * mount(8) use realpath(3) before mounting file system,
93 * so let's do the same with the given path.
95 if (realpath(path, resolved) == NULL || /* can create full path */
96 stat(resolved, &st) == -1 || /* is it stat'able */
97 !S_ISDIR(st.st_mode)) { /* is it a directory */
103 fscount = getmntinfo(&mntbuf, MNT_WAIT);
104 for (n = 0; n < fscount; n++) {
105 if (!strncmp(mntbuf[n].f_fstypename, "ufs", 3)) {
106 if (all || strcmp(path, mntbuf[n].f_mntonname) == 0) {
107 find_snapshot(&mntbuf[n]);
120 find_snapshot(struct statfs *sfs)
123 int j, snapcount = 0;
125 if (ufs_disk_fillout(&disk, sfs->f_mntfromname) == -1)
126 perror("ufs_disk_fillout");
129 printf("%s mounted on %s\n", disk.d_name, disk.d_fs.fs_fsmnt);
131 for (j = 0; j < FSMAXSNAP; j++) {
132 if (disk.d_fs.fs_snapinum[j]) {
133 inode = disk.d_fs.fs_snapinum[j];
134 find_inum(sfs->f_mntonname);
139 if (!snapcount && verbose)
140 printf("\tno snapshots found\n");
146 compare_function(const char *path, const struct stat *st, int flags,
147 struct FTW * ftwv __unused)
150 if (flags == FTW_F && st->st_ino == inode) {
152 printf("\tsnapshot ");
155 printf(" (inode %ju)", (uintmax_t)st->st_ino);
165 find_inum(char *path)
169 ret = nftw(path, compare_function, 1, FTW_PHYS|FTW_MOUNT);
170 if (ret != EEXIST && ret != 0) {
180 printf("usage: snapinfo [-v] -a\n");
181 printf(" snapinfo [-v] mountpoint\n");