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"
27 #include "btrfs-list.h"
29 static const char * const inspect_cmd_group_usage[] = {
30 "btrfs inspect-internal <command> <args>",
34 static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
38 struct btrfs_ioctl_ino_path_args ipa;
39 struct btrfs_data_container *fspath;
41 fspath = malloc(4096);
47 ipa.fspath = (u64)fspath;
49 ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
51 printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
56 printf("ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu, "
57 "cnt=%d, missed=%d\n", ret,
58 (unsigned long)fspath->bytes_left,
59 (unsigned long)fspath->bytes_missing,
60 fspath->elem_cnt, fspath->elem_missed);
62 for (i = 0; i < fspath->elem_cnt; ++i) {
63 char **str = (char **)fspath->val;
64 str[i] += (unsigned long)fspath->val;
66 printf("%s/%s\n", prepend, str[i]);
68 printf("%s\n", str[i]);
76 static const char * const cmd_inode_resolve_usage[] = {
77 "btrfs inspect-internal inode-resolve [-v] <inode> <path>",
78 "Get file system paths for the given inode",
82 static int cmd_inode_resolve(int argc, char **argv)
89 int c = getopt(argc, argv, "v");
98 usage(cmd_inode_resolve_usage);
102 if (check_argc_exact(argc - optind, 2))
103 usage(cmd_inode_resolve_usage);
105 fd = open_file_or_dir(argv[optind+1]);
107 fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
111 return __ino_to_path_fd(atoll(argv[optind]), fd, verbose,
115 static const char * const cmd_logical_resolve_usage[] = {
116 "btrfs inspect-internal logical-resolve [-Pv] [-s bufsize] <logical> <path>",
117 "Get file system paths for the given logical address",
118 "-P skip the path resolving and print the inodes instead",
120 "-s bufsize set inode container's size. This is used to increase inode",
121 " container's size in case it is not enough to read all the ",
122 " resolved results. The max value one can set is 64k",
126 static int cmd_logical_resolve(int argc, char **argv)
134 struct btrfs_ioctl_logical_ino_args loi;
135 struct btrfs_data_container *inodes;
137 char full_path[4096];
142 int c = getopt(argc, argv, "Pvs:");
154 size = atoll(optarg);
157 usage(cmd_logical_resolve_usage);
161 if (check_argc_exact(argc - optind, 2))
162 usage(cmd_logical_resolve_usage);
164 size = min(size, 64 * 1024);
165 inodes = malloc(size);
169 loi.logical = atoll(argv[optind]);
171 loi.inodes = (u64)inodes;
173 fd = open_file_or_dir(argv[optind+1]);
175 fprintf(stderr, "ERROR: can't access '%s'\n", argv[optind+1]);
180 ret = ioctl(fd, BTRFS_IOC_LOGICAL_INO, &loi);
182 printf("ioctl ret=%d, error: %s\n", ret, strerror(errno));
187 printf("ioctl ret=%d, total_size=%llu, bytes_left=%lu, "
188 "bytes_missing=%lu, cnt=%d, missed=%d\n",
190 (unsigned long)inodes->bytes_left,
191 (unsigned long)inodes->bytes_missing,
192 inodes->elem_cnt, inodes->elem_missed);
194 bytes_left = sizeof(full_path);
195 ret = snprintf(full_path, bytes_left, "%s/", argv[optind+1]);
196 path_ptr = full_path + ret;
197 bytes_left -= ret + 1;
198 BUG_ON(bytes_left < 0);
200 for (i = 0; i < inodes->elem_cnt; i += 3) {
201 u64 inum = inodes->val[i];
202 u64 offset = inodes->val[i+1];
203 u64 root = inodes->val[i+2];
208 name = btrfs_list_path_for_root(fd, root);
210 return PTR_ERR(name);
216 ret = snprintf(path_ptr, bytes_left, "%s",
218 BUG_ON(ret >= bytes_left);
220 path_fd = open_file_or_dir(full_path);
222 fprintf(stderr, "ERROR: can't access "
223 "'%s'\n", full_path);
227 __ino_to_path_fd(inum, path_fd, verbose, full_path);
229 printf("inode %llu offset %llu root %llu\n", inum,
239 const struct cmd_group inspect_cmd_group = {
240 inspect_cmd_group_usage, NULL, {
241 { "inode-resolve", cmd_inode_resolve, cmd_inode_resolve_usage,
243 { "logical-resolve", cmd_logical_resolve,
244 cmd_logical_resolve_usage, NULL, 0 },
249 int cmd_inspect(int argc, char **argv)
251 return handle_command_group(&inspect_cmd_group, argc, argv);