int main(int ac, char **av) { struct btrfs_root *root; struct btrfs_fs_info *info; struct btrfs_path path; struct btrfs_key key; struct btrfs_root_item ri; struct extent_buffer *leaf; struct btrfs_disk_key disk_key; struct btrfs_key found_key; char uuidbuf[BTRFS_UUID_UNPARSED_SIZE]; int ret; int slot; int extent_only = 0; int device_only = 0; int uuid_tree_only = 0; int roots_only = 0; int root_backups = 0; u64 block_only = 0; struct btrfs_root *tree_root_scan; u64 tree_id = 0; radix_tree_init(); while(1) { int c; static const struct option long_options[] = { { "help", no_argument, NULL, GETOPT_VAL_HELP}, { NULL, 0, NULL, 0 } }; c = getopt_long(ac, av, "deb:rRut:", long_options, NULL); if (c < 0) break; switch(c) { case 'e': extent_only = 1; break; case 'd': device_only = 1; break; case 'r': roots_only = 1; break; case 'u': uuid_tree_only = 1; break; case 'R': roots_only = 1; root_backups = 1; break; case 'b': block_only = arg_strtou64(optarg); break; case 't': tree_id = arg_strtou64(optarg); break; case GETOPT_VAL_HELP: default: print_usage(c != GETOPT_VAL_HELP); } } set_argv0(av); ac = ac - optind; if (check_argc_exact(ac, 1)) print_usage(1); ret = check_arg_type(av[optind]); if (ret != BTRFS_ARG_BLKDEV && ret != BTRFS_ARG_REG) { fprintf(stderr, "'%s' is not a block device or regular file\n", av[optind]); exit(1); } info = open_ctree_fs_info(av[optind], 0, 0, OPEN_CTREE_PARTIAL); if (!info) { fprintf(stderr, "unable to open %s\n", av[optind]); exit(1); } root = info->fs_root; if (!root) { fprintf(stderr, "unable to open %s\n", av[optind]); exit(1); } if (block_only) { leaf = read_tree_block(root, block_only, root->leafsize, 0); if (extent_buffer_uptodate(leaf) && btrfs_header_level(leaf) != 0) { free_extent_buffer(leaf); leaf = NULL; } if (!leaf) { leaf = read_tree_block(root, block_only, root->nodesize, 0); } if (!extent_buffer_uptodate(leaf)) { fprintf(stderr, "failed to read %llu\n", (unsigned long long)block_only); goto close_root; } btrfs_print_tree(root, leaf, 0); free_extent_buffer(leaf); goto close_root; } if (!(extent_only || uuid_tree_only || tree_id)) { if (roots_only) { printf("root tree: %llu level %d\n", (unsigned long long)info->tree_root->node->start, btrfs_header_level(info->tree_root->node)); printf("chunk tree: %llu level %d\n", (unsigned long long)info->chunk_root->node->start, btrfs_header_level(info->chunk_root->node)); } else { if (info->tree_root->node) { printf("root tree\n"); btrfs_print_tree(info->tree_root, info->tree_root->node, 1); } if (info->chunk_root->node) { printf("chunk tree\n"); btrfs_print_tree(info->chunk_root, info->chunk_root->node, 1); } } } tree_root_scan = info->tree_root; btrfs_init_path(&path); again: if (!extent_buffer_uptodate(tree_root_scan->node)) goto no_node; /* * Tree's that are not pointed by the tree of tree roots */ if (tree_id && tree_id == BTRFS_ROOT_TREE_OBJECTID) { if (!info->tree_root->node) { error("cannot print root tree, invalid pointer"); goto no_node; } printf("root tree\n"); btrfs_print_tree(info->tree_root, info->tree_root->node, 1); goto no_node; } if (tree_id && tree_id == BTRFS_CHUNK_TREE_OBJECTID) { if (!info->chunk_root->node) { error("cannot print chunk tree, invalid pointer"); goto no_node; } printf("chunk tree\n"); btrfs_print_tree(info->chunk_root, info->chunk_root->node, 1); goto no_node; } key.offset = 0; key.objectid = 0; btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY); ret = btrfs_search_slot(NULL, tree_root_scan, &key, &path, 0, 0); BUG_ON(ret < 0); while(1) { leaf = path.nodes[0]; slot = path.slots[0]; if (slot >= btrfs_header_nritems(leaf)) { ret = btrfs_next_leaf(tree_root_scan, &path); if (ret != 0) break; leaf = path.nodes[0]; slot = path.slots[0]; } btrfs_item_key(leaf, &disk_key, path.slots[0]); btrfs_disk_key_to_cpu(&found_key, &disk_key); if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) { unsigned long offset; struct extent_buffer *buf; int skip = extent_only | device_only | uuid_tree_only; offset = btrfs_item_ptr_offset(leaf, slot); read_extent_buffer(leaf, &ri, offset, sizeof(ri)); buf = read_tree_block(tree_root_scan, btrfs_root_bytenr(&ri), btrfs_level_size(tree_root_scan, btrfs_root_level(&ri)), 0); if (!extent_buffer_uptodate(buf)) goto next; if (tree_id && found_key.objectid != tree_id) { free_extent_buffer(buf); goto next; } switch(found_key.objectid) { case BTRFS_ROOT_TREE_OBJECTID: if (!skip) printf("root"); break; case BTRFS_EXTENT_TREE_OBJECTID: if (!device_only && !uuid_tree_only) skip = 0; if (!skip) printf("extent"); break; case BTRFS_CHUNK_TREE_OBJECTID: if (!skip) { printf("chunk"); } break; case BTRFS_DEV_TREE_OBJECTID: if (!uuid_tree_only) skip = 0; if (!skip) printf("device"); break; case BTRFS_FS_TREE_OBJECTID: if (!skip) { printf("fs"); } break; case BTRFS_ROOT_TREE_DIR_OBJECTID: skip = 0; printf("directory"); break; case BTRFS_CSUM_TREE_OBJECTID: if (!skip) { printf("checksum"); } break; case BTRFS_ORPHAN_OBJECTID: if (!skip) { printf("orphan"); } break; case BTRFS_TREE_LOG_OBJECTID: if (!skip) { printf("log"); } break; case BTRFS_TREE_LOG_FIXUP_OBJECTID: if (!skip) { printf("log fixup"); } break; case BTRFS_TREE_RELOC_OBJECTID: if (!skip) { printf("reloc"); } break; case BTRFS_DATA_RELOC_TREE_OBJECTID: if (!skip) { printf("data reloc"); } break; case BTRFS_EXTENT_CSUM_OBJECTID: if (!skip) { printf("extent checksum"); } break; case BTRFS_QUOTA_TREE_OBJECTID: if (!skip) { printf("quota"); } break; case BTRFS_UUID_TREE_OBJECTID: if (!extent_only && !device_only) skip = 0; if (!skip) printf("uuid"); break; case BTRFS_FREE_SPACE_TREE_OBJECTID: if (!skip) printf("free space"); break; case BTRFS_MULTIPLE_OBJECTIDS: if (!skip) { printf("multiple"); } break; default: if (!skip) { printf("file"); } } if (extent_only && !skip) { print_extents(tree_root_scan, buf); } else if (!skip) { printf(" tree "); btrfs_print_key(&disk_key); if (roots_only) { printf(" %llu level %d\n", (unsigned long long)buf->start, btrfs_header_level(buf)); } else { printf(" \n"); btrfs_print_tree(tree_root_scan, buf, 1); } } free_extent_buffer(buf); } next: path.slots[0]++; } no_node: btrfs_release_path(&path); if (tree_root_scan == info->tree_root && info->log_root_tree) { tree_root_scan = info->log_root_tree; goto again; } if (extent_only || device_only || uuid_tree_only) goto close_root; if (root_backups) print_old_roots(info->super_copy); printf("total bytes %llu\n", (unsigned long long)btrfs_super_total_bytes(info->super_copy)); printf("bytes used %llu\n", (unsigned long long)btrfs_super_bytes_used(info->super_copy)); uuidbuf[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0'; uuid_unparse(info->super_copy->fsid, uuidbuf); printf("uuid %s\n", uuidbuf); printf("%s\n", PACKAGE_STRING); close_root: ret = close_ctree(root); btrfs_close_all_devices(); return ret; }
int main(int ac, char **av) { struct btrfs_root *root; struct btrfs_fs_info *info; struct btrfs_path path; struct btrfs_key key; struct btrfs_root_item ri; struct extent_buffer *leaf; struct btrfs_disk_key disk_key; struct btrfs_key found_key; char uuidbuf[37]; int ret; int slot; int extent_only = 0; int device_only = 0; int roots_only = 0; int root_backups = 0; u64 block_only = 0; struct btrfs_root *tree_root_scan; radix_tree_init(); while(1) { int c; c = getopt(ac, av, "deb:rR"); if (c < 0) break; switch(c) { case 'e': extent_only = 1; break; case 'd': device_only = 1; break; case 'r': roots_only = 1; break; case 'R': roots_only = 1; root_backups = 1; break; case 'b': block_only = atoll(optarg); break; default: print_usage(); } } ac = ac - optind; if (ac != 1) print_usage(); info = open_ctree_fs_info(av[optind], 0, 0, 1); if (!info) { fprintf(stderr, "unable to open %s\n", av[optind]); exit(1); } root = info->fs_root; if (block_only) { if (!root) { fprintf(stderr, "unable to open %s\n", av[optind]); exit(1); } leaf = read_tree_block(root, block_only, root->leafsize, 0); if (leaf && btrfs_header_level(leaf) != 0) { free_extent_buffer(leaf); leaf = NULL; } if (!leaf) { leaf = read_tree_block(root, block_only, root->nodesize, 0); } if (!leaf) { fprintf(stderr, "failed to read %llu\n", (unsigned long long)block_only); return 0; } btrfs_print_tree(root, leaf, 0); return 0; } if (!extent_only) { if (roots_only) { printf("root tree: %llu level %d\n", (unsigned long long)info->tree_root->node->start, btrfs_header_level(info->tree_root->node)); printf("chunk tree: %llu level %d\n", (unsigned long long)info->chunk_root->node->start, btrfs_header_level(info->chunk_root->node)); } else { if (info->tree_root->node) { printf("root tree\n"); btrfs_print_tree(info->tree_root, info->tree_root->node, 1); } if (info->chunk_root->node) { printf("chunk tree\n"); btrfs_print_tree(info->chunk_root, info->chunk_root->node, 1); } } } tree_root_scan = info->tree_root; btrfs_init_path(&path); again: if (!extent_buffer_uptodate(tree_root_scan->node)) goto no_node; key.offset = 0; key.objectid = 0; btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY); ret = btrfs_search_slot(NULL, tree_root_scan, &key, &path, 0, 0); BUG_ON(ret < 0); while(1) { leaf = path.nodes[0]; slot = path.slots[0]; if (slot >= btrfs_header_nritems(leaf)) { ret = btrfs_next_leaf(tree_root_scan, &path); if (ret != 0) break; leaf = path.nodes[0]; slot = path.slots[0]; } btrfs_item_key(leaf, &disk_key, path.slots[0]); btrfs_disk_key_to_cpu(&found_key, &disk_key); if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) { unsigned long offset; struct extent_buffer *buf; int skip = extent_only | device_only; offset = btrfs_item_ptr_offset(leaf, slot); read_extent_buffer(leaf, &ri, offset, sizeof(ri)); buf = read_tree_block(tree_root_scan, btrfs_root_bytenr(&ri), btrfs_level_size(tree_root_scan, btrfs_root_level(&ri)), 0); if (!extent_buffer_uptodate(buf)) goto next; switch(found_key.objectid) { case BTRFS_ROOT_TREE_OBJECTID: if (!skip) printf("root"); break; case BTRFS_EXTENT_TREE_OBJECTID: if (!device_only) skip = 0; if (!extent_only && !device_only) printf("extent"); break; case BTRFS_CHUNK_TREE_OBJECTID: if (!skip) { printf("chunk"); } break; case BTRFS_DEV_TREE_OBJECTID: skip = 0; printf("device"); break; case BTRFS_FS_TREE_OBJECTID: if (!skip) { printf("fs"); } break; case BTRFS_ROOT_TREE_DIR_OBJECTID: skip = 0; printf("directory"); break; case BTRFS_CSUM_TREE_OBJECTID: if (!skip) { printf("checksum"); } break; case BTRFS_ORPHAN_OBJECTID: if (!skip) { printf("orphan"); } break; case BTRFS_TREE_LOG_OBJECTID: if (!skip) { printf("log"); } break; case BTRFS_TREE_LOG_FIXUP_OBJECTID: if (!skip) { printf("log fixup"); } break; case BTRFS_TREE_RELOC_OBJECTID: if (!skip) { printf("reloc"); } break; case BTRFS_DATA_RELOC_TREE_OBJECTID: if (!skip) { printf("data reloc"); } break; case BTRFS_EXTENT_CSUM_OBJECTID: if (!skip) { printf("extent checksum"); } break; case BTRFS_QUOTA_TREE_OBJECTID: if (!skip) { printf("quota"); } break; case BTRFS_MULTIPLE_OBJECTIDS: if (!skip) { printf("multiple"); } break; default: if (!skip) { printf("file"); } } if (extent_only && !skip) { print_extents(tree_root_scan, buf); } else if (!skip) { printf(" tree "); btrfs_print_key(&disk_key); if (roots_only) { printf(" %llu level %d\n", (unsigned long long)buf->start, btrfs_header_level(buf)); } else { printf(" \n"); btrfs_print_tree(tree_root_scan, buf, 1); } } } next: path.slots[0]++; } no_node: btrfs_release_path(root, &path); if (tree_root_scan == info->tree_root && info->log_root_tree) { tree_root_scan = info->log_root_tree; goto again; } if (extent_only || device_only) return 0; if (root_backups) print_old_roots(&info->super_copy); printf("total bytes %llu\n", (unsigned long long)btrfs_super_total_bytes(&info->super_copy)); printf("bytes used %llu\n", (unsigned long long)btrfs_super_bytes_used(&info->super_copy)); uuidbuf[36] = '\0'; uuid_unparse(info->super_copy.fsid, uuidbuf); printf("uuid %s\n", uuidbuf); printf("%s\n", BTRFS_BUILD_VERSION); return 0; }