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.
20 #include <sys/ioctl.h>
23 #include "kerncompat.h"
29 char *path_for_root(int fd
, u64 root
);
31 static const char * const inspect_cmd_group_usage
[] = {
32 "btrfs inspect-internal <command> <args>",
36 static int __ino_to_path_fd(u64 inum
, int fd
, int verbose
, const char *prepend
)
40 struct btrfs_ioctl_ino_path_args ipa
;
41 struct btrfs_data_container
*fspath
;
43 fspath
= malloc(4096);
49 ipa
.fspath
= (u64
)fspath
;
51 ret
= ioctl(fd
, BTRFS_IOC_INO_PATHS
, &ipa
);
53 printf("ioctl ret=%d, error: %s\n", ret
, strerror(errno
));
58 printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
59 "cnt=%d, missed=%d\n", ret
,
60 (unsigned long)fspath
->bytes_left
,
61 (unsigned long)fspath
->bytes_missing
,
62 fspath
->elem_cnt
, fspath
->elem_missed
);
64 for (i
= 0; i
< fspath
->elem_cnt
; ++i
) {
65 char **str
= (char **)fspath
->val
;
66 str
[i
] += (unsigned long)fspath
->val
;
68 printf("%s/%s\n", prepend
, str
[i
]);
70 printf("%s\n", str
[i
]);
78 static const char * const cmd_inode_resolve_usage
[] = {
79 "btrfs inspect-internal inode-resolve [-v] <inode> <path>",
80 "Get file system paths for the given inode",
84 static int cmd_inode_resolve(int argc
, char **argv
)
91 int c
= getopt(argc
, argv
, "v");
100 usage(cmd_inode_resolve_usage
);
104 if (check_argc_exact(argc
- optind
, 2))
105 usage(cmd_inode_resolve_usage
);
107 fd
= open_file_or_dir(argv
[optind
+1]);
109 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[optind
+1]);
113 return __ino_to_path_fd(atoll(argv
[optind
]), fd
, verbose
,
117 static const char * const cmd_logical_resolve_usage
[] = {
118 "btrfs inspect-internal logical-resolve [-Pv] <logical> <path>",
119 "Get file system paths for the given logical address",
123 static int cmd_logical_resolve(int argc
, char **argv
)
131 struct btrfs_ioctl_logical_ino_args loi
;
132 struct btrfs_data_container
*inodes
;
133 char full_path
[4096];
138 int c
= getopt(argc
, argv
, "Pv");
150 usage(cmd_logical_resolve_usage
);
154 if (check_argc_exact(argc
- optind
, 2))
155 usage(cmd_logical_resolve_usage
);
157 inodes
= malloc(4096);
161 loi
.logical
= atoll(argv
[optind
]);
163 loi
.inodes
= (u64
)inodes
;
165 fd
= open_file_or_dir(argv
[optind
+1]);
167 fprintf(stderr
, "ERROR: can't access '%s'\n", argv
[optind
+1]);
172 ret
= ioctl(fd
, BTRFS_IOC_LOGICAL_INO
, &loi
);
174 printf("ioctl ret=%d, error: %s\n", ret
, strerror(errno
));
179 printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
180 "cnt=%d, missed=%d\n", ret
,
181 (unsigned long)inodes
->bytes_left
,
182 (unsigned long)inodes
->bytes_missing
,
183 inodes
->elem_cnt
, inodes
->elem_missed
);
185 bytes_left
= sizeof(full_path
);
186 ret
= snprintf(full_path
, bytes_left
, "%s/", argv
[optind
+1]);
187 path_ptr
= full_path
+ ret
;
188 bytes_left
-= ret
+ 1;
189 BUG_ON(bytes_left
< 0);
191 for (i
= 0; i
< inodes
->elem_cnt
; i
+= 3) {
192 u64 inum
= inodes
->val
[i
];
193 u64 offset
= inodes
->val
[i
+1];
194 u64 root
= inodes
->val
[i
+2];
199 name
= path_for_root(fd
, root
);
201 return PTR_ERR(name
);
207 ret
= snprintf(path_ptr
, bytes_left
, "%s",
209 BUG_ON(ret
>= bytes_left
);
211 path_fd
= open_file_or_dir(full_path
);
213 fprintf(stderr
, "ERROR: can't access "
214 "'%s'\n", full_path
);
218 __ino_to_path_fd(inum
, path_fd
, verbose
, full_path
);
220 printf("inode %llu offset %llu root %llu\n", inum
,
230 const struct cmd_group inspect_cmd_group
= {
231 inspect_cmd_group_usage
, NULL
, {
232 { "inode-resolve", cmd_inode_resolve
, cmd_inode_resolve_usage
,
234 { "logical-resolve", cmd_logical_resolve
,
235 cmd_logical_resolve_usage
, NULL
, 0 },
240 int cmd_inspect(int argc
, char **argv
)
242 return handle_command_group(&inspect_cmd_group
, argc
, argv
);