2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
21 #include <sys/ioctl.h>
24 #include "kerncompat.h"
28 #include "send-utils.h"
31 #include "btrfs-list.h"
33 static const char * const inspect_cmd_group_usage[] = {
34 "btrfs inspect-internal <command> <args>",
38 static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
42 struct btrfs_ioctl_ino_path_args ipa;
43 struct btrfs_data_container *fspath;
45 fspath = malloc(4096);
49 memset(fspath, 0, sizeof(*fspath));
52 ipa.fspath = (uintptr_t)fspath;
54 ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
56 printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
61 printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
62 "cnt=%d, missed=%d\n", ret,
63 (unsigned long)fspath->bytes_left,
64 (unsigned long)fspath->bytes_missing,
65 fspath->elem_cnt, fspath->elem_missed);
67 for (i = 0; i < fspath->elem_cnt; ++i) {
70 ptr = (u64)(unsigned long)fspath->val;
71 ptr += fspath->val[i];
72 str = (char *)(unsigned long)ptr;
74 printf("%s/%s\n", prepend, str);
84 static const char * const cmd_inode_resolve_usage[] = {
85 "btrfs inspect-internal inode-resolve [-v] <inode> <path>",
86 "Get file system paths for the given inode",
90 static int cmd_inode_resolve(int argc, char **argv)
95 DIR *dirstream = NULL;
99 int c = getopt(argc, argv, "v");
108 usage(cmd_inode_resolve_usage);
112 if (check_argc_exact(argc - optind, 2))
113 usage(cmd_inode_resolve_usage);
115 fd = open_file_or_dir(argv[optind+1], &dirstream);
117 fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
121 ret = __ino_to_path_fd(atoll(argv[optind]), fd, verbose,
123 close_file_or_dir(fd, dirstream);
128 static const char * const cmd_logical_resolve_usage[] = {
129 "btrfs inspect-internal logical-resolve [-Pv] [-s bufsize] <logical> <path>",
130 "Get file system paths for the given logical address",
131 "-P skip the path resolving and print the inodes instead",
133 "-s bufsize set inode container's size. This is used to increase inode",
134 " container's size in case it is not enough to read all the ",
135 " resolved results. The max value one can set is 64k",
139 static int cmd_logical_resolve(int argc, char **argv)
147 struct btrfs_ioctl_logical_ino_args loi;
148 struct btrfs_data_container *inodes;
150 char full_path[4096];
152 DIR *dirstream = NULL;
156 int c = getopt(argc, argv, "Pvs:");
168 size = atoll(optarg);
171 usage(cmd_logical_resolve_usage);
175 if (check_argc_exact(argc - optind, 2))
176 usage(cmd_logical_resolve_usage);
178 size = min(size, (u64)64 * 1024);
179 inodes = malloc(size);
183 memset(inodes, 0, sizeof(*inodes));
184 loi.logical = atoll(argv[optind]);
186 loi.inodes = (uintptr_t)inodes;
188 fd = open_file_or_dir(argv[optind+1], &dirstream);
190 fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
195 ret = ioctl(fd, BTRFS_IOC_LOGICAL_INO, &loi);
197 printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
202 printf("ioctl ret=%d, total_size=%llu, bytes_left=%lu, "
203 "bytes_missing=%lu, cnt=%d, missed=%d\n",
205 (unsigned long)inodes->bytes_left,
206 (unsigned long)inodes->bytes_missing,
207 inodes->elem_cnt, inodes->elem_missed);
209 bytes_left = sizeof(full_path);
210 ret = snprintf(full_path, bytes_left, "%s/", argv[optind+1]);
211 path_ptr = full_path + ret;
212 bytes_left -= ret + 1;
213 BUG_ON(bytes_left < 0);
215 for (i = 0; i < inodes->elem_cnt; i += 3) {
216 u64 inum = inodes->val[i];
217 u64 offset = inodes->val[i+1];
218 u64 root = inodes->val[i+2];
224 name = btrfs_list_path_for_root(fd, root);
234 ret = snprintf(path_ptr, bytes_left, "%s",
236 BUG_ON(ret >= bytes_left);
238 path_fd = open_file_or_dir(full_path, &dirs);
240 fprintf(stderr, "ERROR: can't access "
241 "'%s'\n", full_path);
245 __ino_to_path_fd(inum, path_fd, verbose, full_path);
247 close_file_or_dir(path_fd, dirs);
249 printf("inode %llu offset %llu root %llu\n", inum,
255 close_file_or_dir(fd, dirstream);
260 static const char * const cmd_subvolid_resolve_usage[] = {
261 "btrfs inspect-internal subvolid-resolve <subvolid> <path>",
262 "Get file system paths for the given subvolume ID.",
266 static int cmd_subvolid_resolve(int argc, char **argv)
271 char path[BTRFS_PATH_NAME_MAX + 1];
272 DIR *dirstream = NULL;
274 if (check_argc_exact(argc, 3))
275 usage(cmd_subvolid_resolve_usage);
277 fd = open_file_or_dir(argv[2], &dirstream);
279 fprintf(stderr, "ERROR: can't access '%s'\n", argv[2]);
284 subvol_id = atoll(argv[1]);
285 ret = btrfs_subvolid_resolve(fd, path, sizeof(path), subvol_id);
289 "%s: btrfs_subvolid_resolve(subvol_id %llu) failed with ret=%d\n",
290 argv[0], (unsigned long long)subvol_id, ret);
294 path[BTRFS_PATH_NAME_MAX] = '\0';
295 printf("%s\n", path);
298 close_file_or_dir(fd, dirstream);
302 const struct cmd_group inspect_cmd_group = {
303 inspect_cmd_group_usage, NULL, {
304 { "inode-resolve", cmd_inode_resolve, cmd_inode_resolve_usage,
306 { "logical-resolve", cmd_logical_resolve,
307 cmd_logical_resolve_usage, NULL, 0 },
308 { "subvolid-resolve", cmd_subvolid_resolve,
309 cmd_subvolid_resolve_usage, NULL, 0 },
314 int cmd_inspect(int argc, char **argv)
316 return handle_command_group(&inspect_cmd_group, argc, argv);