X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=cmds-inspect-dump-tree.c;h=df44bb635c9c89ffa91f0762d3ce1df0e742abbb;hb=6dd8669a1c52cae1d827d934fbe6171f4893f1ba;hp=4614bbc23d85c6b7b0d1b7dc475cbb0c9f51c3e9;hpb=05640939ea24c609c7c2badc76ebba9ec6a4896d;p=platform%2Fupstream%2Fbtrfs-progs.git diff --git a/cmds-inspect-dump-tree.c b/cmds-inspect-dump-tree.c index 4614bbc..df44bb6 100644 --- a/cmds-inspect-dump-tree.c +++ b/cmds-inspect-dump-tree.c @@ -31,13 +31,13 @@ #include "volumes.h" #include "commands.h" #include "utils.h" -#include "cmds-inspect-dump-tree.h" +#include "help.h" static void print_extents(struct btrfs_root *root, struct extent_buffer *eb) { + struct extent_buffer *next; int i; u32 nr; - u32 size; if (!eb) return; @@ -47,24 +47,35 @@ static void print_extents(struct btrfs_root *root, struct extent_buffer *eb) return; } - size = btrfs_level_size(root, btrfs_header_level(eb) - 1); nr = btrfs_header_nritems(eb); for (i = 0; i < nr; i++) { - struct extent_buffer *next = read_tree_block(root, - btrfs_node_blockptr(eb, i), - size, - btrfs_node_ptr_generation(eb, i)); + next = read_tree_block(root->fs_info, + btrfs_node_blockptr(eb, i), + btrfs_node_ptr_generation(eb, i)); if (!extent_buffer_uptodate(next)) continue; - if (btrfs_is_leaf(next) && - btrfs_header_level(eb) != 1) - BUG(); - if (btrfs_header_level(next) != - btrfs_header_level(eb) - 1) - BUG(); + if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) { + warning( + "eb corrupted: item %d eb level %d next level %d, skipping the rest", + i, btrfs_header_level(next), + btrfs_header_level(eb)); + goto out; + } + if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) { + warning( + "eb corrupted: item %d eb level %d next level %d, skipping the rest", + i, btrfs_header_level(next), + btrfs_header_level(eb)); + goto out; + } print_extents(root, next); free_extent_buffer(next); } + + return; + +out: + free_extent_buffer(next); } static void print_old_roots(struct btrfs_super_block *super) @@ -106,16 +117,87 @@ static void print_old_roots(struct btrfs_super_block *super) } } +/* + * Convert a tree name from various forms to the numerical id if possible + * Accepted forms: + * - case does not matter + * - same as the key name, BTRFS_ROOT_TREE_OBJECTID + * - dtto shortened, BTRFS_ROOT_TREE + * - dtto without prefix, ROOT_TREE + * - common name, ROOT, CHUNK, EXTENT, ... + * - dtto alias, DEVICE for DEV, CHECKSUM for CSUM + * + * Returns 0 if the tree id was not recognized. + */ +static u64 treeid_from_string(const char *str, const char **end) +{ + int match = 0; + int i; + u64 id; + static struct treename { + const char *name; + u64 id; + } tn[] = { + { "ROOT", BTRFS_ROOT_TREE_OBJECTID }, + { "EXTENT", BTRFS_EXTENT_TREE_OBJECTID }, + { "CHUNK", BTRFS_CHUNK_TREE_OBJECTID }, + { "DEVICE", BTRFS_DEV_TREE_OBJECTID }, + { "DEV", BTRFS_DEV_TREE_OBJECTID }, + { "FS", BTRFS_FS_TREE_OBJECTID }, + { "CSUM", BTRFS_CSUM_TREE_OBJECTID }, + { "CHECKSUM", BTRFS_CSUM_TREE_OBJECTID }, + { "QUOTA", BTRFS_QUOTA_TREE_OBJECTID }, + { "UUID", BTRFS_UUID_TREE_OBJECTID }, + { "FREE_SPACE", BTRFS_FREE_SPACE_TREE_OBJECTID }, + { "TREE_LOG_FIXUP", BTRFS_TREE_LOG_FIXUP_OBJECTID }, + { "TREE_LOG", BTRFS_TREE_LOG_OBJECTID }, + { "TREE_RELOC", BTRFS_TREE_RELOC_OBJECTID }, + { "DATA_RELOC", BTRFS_DATA_RELOC_TREE_OBJECTID } + }; + + if (strncasecmp("BTRFS_", str, strlen("BTRFS_")) == 0) + str += strlen("BTRFS_"); + + for (i = 0; i < ARRAY_SIZE(tn); i++) { + int len = strlen(tn[i].name); + + if (strncasecmp(tn[i].name, str, len) == 0) { + id = tn[i].id; + match = 1; + str += len; + break; + } + } + + if (!match) + return 0; + + if (strncasecmp("_TREE", str, strlen("_TREE")) == 0) + str += strlen("_TREE"); + + if (strncasecmp("_OBJECTID", str, strlen("_OBJECTID")) == 0) + str += strlen("_OBJECTID"); + + *end = str; + + return id; +} + const char * const cmd_inspect_dump_tree_usage[] = { "btrfs inspect-internal dump-tree [options] device", - "Dump structures from a device", - "-e|--extents print detailed extents info", - "-d|--device print info of btrfs device and root tree dir only", - "-r|--roots print info of roots only", - "-R|--backups print info of roots and root backups", - "-u|--uuid print info of uuid tree only", - "-b|--block print info of the specified block only", - "-t|--tree print only the tree with the given id", + "Dump tree structures from a given device", + "Dump tree structures from a given device in textual form, expand keys to human", + "readable equivalents where possible.", + "Note: contains file names, consider that if you're asked to send the dump", + "for analysis.", + "", + "-e|--extents print only extent info: extent and device trees", + "-d|--device print only device info: tree root, chunk and device trees", + "-r|--roots print only short root node info", + "-R|--backups same as --roots plus print backup root info", + "-u|--uuid print only the uuid tree", + "-b|--block print info from the specified block only", + "-t|--tree print only tree with the given id (string or number)", NULL }; @@ -137,6 +219,7 @@ int cmd_inspect_dump_tree(int argc, char **argv) int uuid_tree_only = 0; int roots_only = 0; int root_backups = 0; + unsigned open_ctree_flags = OPEN_CTREE_FS_PARTIAL; u64 block_only = 0; struct btrfs_root *tree_root_scan; u64 tree_id = 0; @@ -175,11 +258,34 @@ int cmd_inspect_dump_tree(int argc, char **argv) root_backups = 1; break; case 'b': + /* + * If only showing one block, no need to fill roots + * other than chunk root + */ + open_ctree_flags |= __OPEN_CTREE_RETURN_CHUNK_ROOT; block_only = arg_strtou64(optarg); break; - case 't': - tree_id = arg_strtou64(optarg); + case 't': { + const char *end = NULL; + + if (string_is_numerical(optarg)) + tree_id = arg_strtou64(optarg); + else + tree_id = treeid_from_string(optarg, &end); + + if (!tree_id) { + error("unrecognized tree id: %s", + optarg); + exit(1); + } + + if (end && *end) { + error("unexpected tree id suffix of '%s': %s", + optarg, end); + exit(1); + } break; + } default: usage(cmd_inspect_dump_tree_usage); } @@ -194,34 +300,25 @@ int cmd_inspect_dump_tree(int argc, char **argv) goto out; } - info = open_ctree_fs_info(argv[optind], 0, 0, 0, OPEN_CTREE_PARTIAL); - if (!info) { - error("unable to open %s", argv[optind]); - goto out; - } + printf("%s\n", PACKAGE_STRING); - root = info->fs_root; - if (!root) { + info = open_ctree_fs_info(argv[optind], 0, 0, 0, open_ctree_flags); + if (!info) { error("unable to open %s", argv[optind]); goto out; } if (block_only) { - leaf = read_tree_block(root, - block_only, - root->leafsize, 0); - + root = info->chunk_root; + leaf = read_tree_block(info, block_only, 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 (!leaf) + leaf = read_tree_block(info, block_only, 0); if (!extent_buffer_uptodate(leaf)) { error("failed to read %llu", (unsigned long long)block_only); @@ -232,6 +329,12 @@ int cmd_inspect_dump_tree(int argc, char **argv) goto close_root; } + root = info->fs_root; + if (!root) { + error("unable to open %s", argv[optind]); + goto out; + } + if (!(extent_only || uuid_tree_only || tree_id)) { if (roots_only) { printf("root tree: %llu level %d\n", @@ -240,6 +343,11 @@ int cmd_inspect_dump_tree(int argc, char **argv) printf("chunk tree: %llu level %d\n", (unsigned long long)info->chunk_root->node->start, btrfs_header_level(info->chunk_root->node)); + if (info->log_root_tree) + printf("log root tree: %llu level %d\n", + info->log_root_tree->node->start, + btrfs_header_level( + info->log_root_tree->node)); } else { if (info->tree_root->node) { printf("root tree\n"); @@ -252,6 +360,12 @@ int cmd_inspect_dump_tree(int argc, char **argv) btrfs_print_tree(info->chunk_root, info->chunk_root->node, 1); } + + if (info->log_root_tree) { + printf("log root tree\n"); + btrfs_print_tree(info->log_root_tree, + info->log_root_tree->node, 1); + } } } tree_root_scan = info->tree_root; @@ -267,28 +381,44 @@ again: if (tree_id && tree_id == BTRFS_ROOT_TREE_OBJECTID) { if (!info->tree_root->node) { error("cannot print root tree, invalid pointer"); - goto no_node; + goto close_root; } printf("root tree\n"); btrfs_print_tree(info->tree_root, info->tree_root->node, 1); - goto no_node; + goto close_root; } if (tree_id && tree_id == BTRFS_CHUNK_TREE_OBJECTID) { if (!info->chunk_root->node) { error("cannot print chunk tree, invalid pointer"); - goto no_node; + goto close_root; } printf("chunk tree\n"); btrfs_print_tree(info->chunk_root, info->chunk_root->node, 1); - goto no_node; + goto close_root; + } + + if (tree_id && tree_id == BTRFS_TREE_LOG_OBJECTID) { + if (!info->log_root_tree) { + error("cannot print log root tree, invalid pointer"); + goto close_root; + } + printf("log root tree\n"); + btrfs_print_tree(info->log_root_tree, info->log_root_tree->node, + 1); + goto close_root; } key.offset = 0; key.objectid = 0; - btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY); + key.type = BTRFS_ROOT_ITEM_KEY; ret = btrfs_search_slot(NULL, tree_root_scan, &key, &path, 0, 0); - BUG_ON(ret < 0); + if (ret < 0) { + error("cannot read ROOT_ITEM from tree %llu: %s", + (unsigned long long)tree_root_scan->root_key.objectid, + strerror(-ret)); + goto close_root; + } while (1) { leaf = path.nodes[0]; slot = path.slots[0]; @@ -301,18 +431,14 @@ again: } 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) { + if (found_key.type == 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); + buf = read_tree_block(info, btrfs_root_bytenr(&ri), 0); if (!extent_buffer_uptodate(buf)) goto next; if (tree_id && found_key.objectid != tree_id) { @@ -412,6 +538,9 @@ again: } } if (extent_only && !skip) { + printf(" tree "); + btrfs_print_key(&disk_key); + printf("\n"); print_extents(tree_root_scan, buf); } else if (!skip) { printf(" tree "); @@ -433,8 +562,7 @@ next: no_node: btrfs_release_path(&path); - if (tree_root_scan == info->tree_root && - info->log_root_tree) { + if (tree_root_scan == info->tree_root && info->log_root_tree) { tree_root_scan = info->log_root_tree; goto again; } @@ -452,7 +580,6 @@ no_node: 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); out: