diff options
| -rw-r--r-- | cmds-check.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/cmds-check.c b/cmds-check.c index 86ba1ddb..2aab34b1 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -6634,6 +6634,98 @@ static int zero_log_tree(struct btrfs_root *root) return ret; } +static int populate_csum(struct btrfs_trans_handle *trans, + struct btrfs_root *csum_root, char *buf, u64 start, + u64 len) +{ + u64 offset = 0; + u64 sectorsize; + int ret = 0; + + while (offset < len) { + sectorsize = csum_root->sectorsize; + ret = read_extent_data(csum_root, buf, start + offset, + §orsize, 0); + if (ret) + break; + ret = btrfs_csum_file_block(trans, csum_root, start + len, + start + offset, buf, sectorsize); + if (ret) + break; + offset += sectorsize; + } + return ret; +} + +static int fill_csum_tree(struct btrfs_trans_handle *trans, + struct btrfs_root *csum_root) +{ + struct btrfs_root *extent_root = csum_root->fs_info->extent_root; + struct btrfs_path *path; + struct btrfs_extent_item *ei; + struct extent_buffer *leaf; + char *buf; + struct btrfs_key key; + int ret; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + key.objectid = 0; + key.type = BTRFS_EXTENT_ITEM_KEY; + key.offset = 0; + + ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0); + if (ret < 0) { + btrfs_free_path(path); + return ret; + } + + buf = malloc(csum_root->sectorsize); + if (!buf) { + btrfs_free_path(path); + return -ENOMEM; + } + + while (1) { + if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) { + ret = btrfs_next_leaf(extent_root, path); + if (ret < 0) + break; + if (ret) { + ret = 0; + break; + } + } + leaf = path->nodes[0]; + + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); + if (key.type != BTRFS_EXTENT_ITEM_KEY) { + path->slots[0]++; + continue; + } + + ei = btrfs_item_ptr(leaf, path->slots[0], + struct btrfs_extent_item); + if (!(btrfs_extent_flags(leaf, ei) & + BTRFS_EXTENT_FLAG_DATA)) { + path->slots[0]++; + continue; + } + + ret = populate_csum(trans, csum_root, buf, key.objectid, + key.offset); + if (ret) + break; + path->slots[0]++; + } + + btrfs_free_path(path); + free(buf); + return ret; +} + static struct option long_options[] = { { "super", 1, NULL, 's' }, { "repair", 0, NULL, 0 }, @@ -6820,6 +6912,12 @@ int cmd_check(int argc, char **argv) ret = -EIO; goto close_out; } + + ret = fill_csum_tree(trans, info->csum_root); + if (ret) { + fprintf(stderr, "crc refilling failed\n"); + return -EIO; + } } /* * Ok now we commit and run the normal fsck, which will add |