| /* |
| * This testing program makes sure superblock size is 1024 bytes long |
| * |
| * Copyright (C) 2007 by Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Library |
| * General Public License, version 2. |
| * %End-Header% |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| |
| #include "ext2_fs.h" |
| |
| #define sb_struct ext2_super_block |
| #define sb_struct_name "ext2_super_block" |
| |
| struct sb_struct sb; |
| |
| #ifndef offsetof |
| #define offsetof(type, member) __builtin_offsetof (type, member) |
| #endif |
| |
| #define check_field(x, s) cur_offset = do_field(#x, s, sizeof(sb.x), \ |
| offsetof(struct sb_struct, x), \ |
| cur_offset) |
| |
| static int do_field(const char *field, unsigned size, unsigned cur_size, |
| unsigned offset, unsigned cur_offset) |
| { |
| if (size != cur_size) { |
| printf("error: %s size %u should be %u\n", |
| field, cur_size, size); |
| exit(1); |
| } |
| if (offset != cur_offset) { |
| printf("error: %s offset %u should be %u\n", |
| field, cur_offset, offset); |
| exit(1); |
| } |
| printf("%8d %-30s %3u\n", offset, field, size); |
| return offset + size; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| #if (__GNUC__ >= 4) |
| int cur_offset = 0; |
| |
| printf("%8s %-30s %3s\n", "offset", "field", "size"); |
| check_field(s_inodes_count, 4); |
| check_field(s_blocks_count, 4); |
| check_field(s_r_blocks_count, 4); |
| check_field(s_free_blocks_count, 4); |
| check_field(s_free_inodes_count, 4); |
| check_field(s_first_data_block, 4); |
| check_field(s_log_block_size, 4); |
| check_field(s_log_cluster_size, 4); |
| check_field(s_blocks_per_group, 4); |
| check_field(s_clusters_per_group, 4); |
| check_field(s_inodes_per_group, 4); |
| check_field(s_mtime, 4); |
| check_field(s_wtime, 4); |
| check_field(s_mnt_count, 2); |
| check_field(s_max_mnt_count, 2); |
| check_field(s_magic, 2); |
| check_field(s_state, 2); |
| check_field(s_errors, 2); |
| check_field(s_minor_rev_level, 2); |
| check_field(s_lastcheck, 4); |
| check_field(s_checkinterval, 4); |
| check_field(s_creator_os, 4); |
| check_field(s_rev_level, 4); |
| check_field(s_def_resuid, 2); |
| check_field(s_def_resgid, 2); |
| check_field(s_first_ino, 4); |
| check_field(s_inode_size, 2); |
| check_field(s_block_group_nr, 2); |
| check_field(s_feature_compat, 4); |
| check_field(s_feature_incompat, 4); |
| check_field(s_feature_ro_compat, 4); |
| check_field(s_uuid, 16); |
| check_field(s_volume_name, 16); |
| check_field(s_last_mounted, 64); |
| check_field(s_algorithm_usage_bitmap, 4); |
| check_field(s_prealloc_blocks, 1); |
| check_field(s_prealloc_dir_blocks, 1); |
| check_field(s_reserved_gdt_blocks, 2); |
| check_field(s_journal_uuid, 16); |
| check_field(s_journal_inum, 4); |
| check_field(s_journal_dev, 4); |
| check_field(s_last_orphan, 4); |
| check_field(s_hash_seed, 4 * 4); |
| check_field(s_def_hash_version, 1); |
| check_field(s_jnl_backup_type, 1); |
| check_field(s_desc_size, 2); |
| check_field(s_default_mount_opts, 4); |
| check_field(s_first_meta_bg, 4); |
| check_field(s_mkfs_time, 4); |
| check_field(s_jnl_blocks, 17 * 4); |
| check_field(s_blocks_count_hi, 4); |
| check_field(s_r_blocks_count_hi, 4); |
| check_field(s_free_blocks_hi, 4); |
| check_field(s_min_extra_isize, 2); |
| check_field(s_want_extra_isize, 2); |
| check_field(s_flags, 4); |
| check_field(s_raid_stride, 2); |
| check_field(s_mmp_update_interval, 2); |
| check_field(s_mmp_block, 8); |
| check_field(s_raid_stripe_width, 4); |
| check_field(s_log_groups_per_flex, 1); |
| check_field(s_checksum_type, 1); |
| check_field(s_encryption_level, 1); |
| check_field(s_reserved_pad, 1); |
| check_field(s_kbytes_written, 8); |
| check_field(s_snapshot_inum, 4); |
| check_field(s_snapshot_id, 4); |
| check_field(s_snapshot_r_blocks_count, 8); |
| check_field(s_snapshot_list, 4); |
| check_field(s_error_count, 4); |
| check_field(s_first_error_time, 4); |
| check_field(s_first_error_ino, 4); |
| check_field(s_first_error_block, 8); |
| check_field(s_first_error_func, 32); |
| check_field(s_first_error_line, 4); |
| check_field(s_last_error_time, 4); |
| check_field(s_last_error_ino, 4); |
| check_field(s_last_error_line, 4); |
| check_field(s_last_error_block, 8); |
| check_field(s_last_error_func, 32); |
| check_field(s_mount_opts, 64); |
| check_field(s_usr_quota_inum, 4); |
| check_field(s_grp_quota_inum, 4); |
| check_field(s_overhead_blocks, 4); |
| check_field(s_backup_bgs, 8); |
| check_field(s_encrypt_algos, 4); |
| check_field(s_encrypt_pw_salt, 16); |
| check_field(s_lpf_ino, 4); |
| check_field(s_reserved, 100 * 4); |
| check_field(s_checksum, 4); |
| do_field("Superblock end", 0, 0, cur_offset, 1024); |
| #endif |
| return 0; |
| } |