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",
92 static int cmd_inode_resolve(int argc
, char **argv
)
97 DIR *dirstream
= NULL
;
101 int c
= getopt(argc
, argv
, "v");
110 usage(cmd_inode_resolve_usage
);
114 if (check_argc_exact(argc
- optind
, 2))
115 usage(cmd_inode_resolve_usage
);
117 fd
= open_file_or_dir(argv
[optind
+1], &dirstream
);
119 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[optind
+1]);
123 ret
= __ino_to_path_fd(atoll(argv
[optind
]), fd
, verbose
,
125 close_file_or_dir(fd
, dirstream
);
130 static const char * const cmd_logical_resolve_usage
[] = {
131 "btrfs inspect-internal logical-resolve [-Pv] [-s bufsize] <logical> <path>",
132 "Get file system paths for the given logical address",
133 "-P skip the path resolving and print the inodes instead",
135 "-s bufsize set inode container's size. This is used to increase inode",
136 " container's size in case it is not enough to read all the ",
137 " resolved results. The max value one can set is 64k",
141 static int cmd_logical_resolve(int argc
, char **argv
)
149 struct btrfs_ioctl_logical_ino_args loi
;
150 struct btrfs_data_container
*inodes
;
152 char full_path
[4096];
154 DIR *dirstream
= NULL
;
158 int c
= getopt(argc
, argv
, "Pvs:");
170 size
= atoll(optarg
);
173 usage(cmd_logical_resolve_usage
);
177 if (check_argc_exact(argc
- optind
, 2))
178 usage(cmd_logical_resolve_usage
);
180 size
= min(size
, (u64
)64 * 1024);
181 inodes
= malloc(size
);
185 memset(inodes
, 0, sizeof(*inodes
));
186 loi
.logical
= atoll(argv
[optind
]);
188 loi
.inodes
= (uintptr_t)inodes
;
190 fd
= open_file_or_dir(argv
[optind
+1], &dirstream
);
192 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[optind
+1]);
197 ret
= ioctl(fd
, BTRFS_IOC_LOGICAL_INO
, &loi
);
199 printf("ioctl ret=%d, error: %s\n", ret
, strerror(errno
));
204 printf("ioctl ret=%d, total_size=%llu, bytes_left=%lu, "
205 "bytes_missing=%lu, cnt=%d, missed=%d\n",
207 (unsigned long)inodes
->bytes_left
,
208 (unsigned long)inodes
->bytes_missing
,
209 inodes
->elem_cnt
, inodes
->elem_missed
);
211 bytes_left
= sizeof(full_path
);
212 ret
= snprintf(full_path
, bytes_left
, "%s/", argv
[optind
+1]);
213 path_ptr
= full_path
+ ret
;
214 bytes_left
-= ret
+ 1;
215 BUG_ON(bytes_left
< 0);
217 for (i
= 0; i
< inodes
->elem_cnt
; i
+= 3) {
218 u64 inum
= inodes
->val
[i
];
219 u64 offset
= inodes
->val
[i
+1];
220 u64 root
= inodes
->val
[i
+2];
226 name
= btrfs_list_path_for_root(fd
, root
);
236 ret
= snprintf(path_ptr
, bytes_left
, "%s",
238 BUG_ON(ret
>= bytes_left
);
240 path_fd
= open_file_or_dir(full_path
, &dirs
);
242 fprintf(stderr
, "ERROR: can't access "
243 "'%s'\n", full_path
);
247 __ino_to_path_fd(inum
, path_fd
, verbose
, full_path
);
249 close_file_or_dir(path_fd
, dirs
);
251 printf("inode %llu offset %llu root %llu\n", inum
,
257 close_file_or_dir(fd
, dirstream
);
262 static const char * const cmd_subvolid_resolve_usage
[] = {
263 "btrfs inspect-internal subvolid-resolve <subvolid> <path>",
264 "Get file system paths for the given subvolume ID.",
268 static int cmd_subvolid_resolve(int argc
, char **argv
)
273 char path
[BTRFS_PATH_NAME_MAX
+ 1];
274 DIR *dirstream
= NULL
;
276 if (check_argc_exact(argc
, 3))
277 usage(cmd_subvolid_resolve_usage
);
279 fd
= open_file_or_dir(argv
[2], &dirstream
);
281 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[2]);
286 subvol_id
= atoll(argv
[1]);
287 ret
= btrfs_subvolid_resolve(fd
, path
, sizeof(path
), subvol_id
);
291 "%s: btrfs_subvolid_resolve(subvol_id %llu) failed with ret=%d\n",
292 argv
[0], (unsigned long long)subvol_id
, ret
);
296 path
[BTRFS_PATH_NAME_MAX
] = '\0';
297 printf("%s\n", path
);
300 close_file_or_dir(fd
, dirstream
);
304 static const char* const cmd_rootid_usage
[] = {
305 "btrfs inspect-internal rootid <path>",
306 "Get tree ID of the containing subvolume of path.",
310 static int cmd_rootid(int argc
, char **argv
)
315 DIR *dirstream
= NULL
;
317 if (check_argc_exact(argc
, 2))
318 usage(cmd_rootid_usage
);
320 fd
= open_file_or_dir(argv
[1], &dirstream
);
322 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[1]);
327 ret
= lookup_ino_rootid(fd
, &rootid
);
329 fprintf(stderr
, "%s: rootid failed with ret=%d\n",
334 printf("%llu\n", (unsigned long long)rootid
);
336 close_file_or_dir(fd
, dirstream
);
341 const struct cmd_group inspect_cmd_group
= {
342 inspect_cmd_group_usage
, NULL
, {
343 { "inode-resolve", cmd_inode_resolve
, cmd_inode_resolve_usage
,
345 { "logical-resolve", cmd_logical_resolve
,
346 cmd_logical_resolve_usage
, NULL
, 0 },
347 { "subvolid-resolve", cmd_subvolid_resolve
,
348 cmd_subvolid_resolve_usage
, NULL
, 0 },
349 { "rootid", cmd_rootid
, cmd_rootid_usage
, NULL
, 0 },
354 int cmd_inspect(int argc
, char **argv
)
356 return handle_command_group(&inspect_cmd_group
, argc
, argv
);