static void print_root(struct extent_buffer *leaf, int slot) { struct btrfs_root_item *ri; struct btrfs_root_item root_item; int len; char uuid_str[BTRFS_UUID_UNPARSED_SIZE]; char flags_str[32] = {0}; struct btrfs_key drop_key; ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item); len = btrfs_item_size_nr(leaf, slot); memset(&root_item, 0, sizeof(root_item)); read_extent_buffer(leaf, &root_item, (unsigned long)ri, len); root_flags_to_str(btrfs_root_flags(&root_item), flags_str); printf("\t\tgeneration %llu root_dirid %llu bytenr %llu level %hhu refs %u\n", (unsigned long long)btrfs_root_generation(&root_item), (unsigned long long)btrfs_root_dirid(&root_item), (unsigned long long)btrfs_root_bytenr(&root_item), btrfs_root_level(&root_item), btrfs_root_refs(&root_item)); printf("\t\tlastsnap %llu byte_limit %llu bytes_used %llu flags 0x%llx(%s)\n", (unsigned long long)btrfs_root_last_snapshot(&root_item), (unsigned long long)btrfs_root_limit(&root_item), (unsigned long long)btrfs_root_used(&root_item), (unsigned long long)btrfs_root_flags(&root_item), flags_str); if (root_item.generation == root_item.generation_v2) { uuid_unparse(root_item.uuid, uuid_str); printf("\t\tuuid %s\n", uuid_str); if (!empty_uuid(root_item.parent_uuid)) { uuid_unparse(root_item.parent_uuid, uuid_str); printf("\t\tparent_uuid %s\n", uuid_str); } if (!empty_uuid(root_item.received_uuid)) { uuid_unparse(root_item.received_uuid, uuid_str); printf("\t\treceived_uuid %s\n", uuid_str); } if (root_item.ctransid) { printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n", btrfs_root_ctransid(&root_item), btrfs_root_otransid(&root_item), btrfs_root_stransid(&root_item), btrfs_root_rtransid(&root_item)); } } btrfs_disk_key_to_cpu(&drop_key, &root_item.drop_progress); printf("\t\tdrop "); btrfs_print_key(&root_item.drop_progress); printf(" level %hhu\n", root_item.drop_level); }
static ssize_t root_block_limit_show(struct btrfs_root *root, char *buf) { return snprintf(buf, PAGE_SIZE, "%llu\n", (unsigned long long)btrfs_root_limit(&root->root_item)); }