lib/ext2fs/tst_super_size.c

   1 /*
   2  * This testing program makes sure superblock size is 1024 bytes long
   3  *
   4  * Copyright (C) 2007 by Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Library
   8  * General Public License, version 2.
   9  * %End-Header%
  10  */
  11
  12 #include "config.h"
  13 #include <stdio.h>
  14 #include <unistd.h>
  15 #include <stdlib.h>
  16
  17 #include "ext2_fs.h"
  18
  19 #define sb_struct ext2_super_block
  20 #define sb_struct_name "ext2_super_block"
  21
  22 struct sb_struct sb;
  23
  24 #ifndef offsetof
  25 #define offsetof(type, member)  __builtin_offsetof (type, member)
  26 #endif
  27
  28 #define check_field(x, s) cur_offset = do_field(#x, s, sizeof(sb.x),           \
  29                                                 offsetof(struct sb_struct, x), \
  30                                                 cur_offset)
  31
  32 static int do_field(const char *field, unsigned size, unsigned cur_size,
  33                     unsigned offset, unsigned cur_offset)
  34 {
  35         if (size != cur_size) {
  36                 printf("error: %s size %u should be %u\n",
  37                        field, cur_size, size);
  38                 exit(1);
  39         }
  40         if (offset != cur_offset) {
  41                 printf("error: %s offset %u should be %u\n",
  42                        field, cur_offset, offset);
  43                 exit(1);
  44         }
  45         printf("%8d %-30s %3u\n", offset, field, size);
  46         return offset + size;
  47 }
  48
  49 int main(int argc, char **argv)
  50 {
  51 #if (__GNUC__ >= 4)
  52         int cur_offset = 0;
  53
  54         printf("%8s %-30s %3s\n", "offset", "field", "size");
  55         check_field(s_inodes_count, 4);
  56         check_field(s_blocks_count, 4);
  57         check_field(s_r_blocks_count, 4);
  58         check_field(s_free_blocks_count, 4);
  59         check_field(s_free_inodes_count, 4);
  60         check_field(s_first_data_block, 4);
  61         check_field(s_log_block_size, 4);
  62         check_field(s_log_cluster_size, 4);
  63         check_field(s_blocks_per_group, 4);
  64         check_field(s_clusters_per_group, 4);
  65         check_field(s_inodes_per_group, 4);
  66         check_field(s_mtime, 4);
  67         check_field(s_wtime, 4);
  68         check_field(s_mnt_count, 2);
  69         check_field(s_max_mnt_count, 2);
  70         check_field(s_magic, 2);
  71         check_field(s_state, 2);
  72         check_field(s_errors, 2);
  73         check_field(s_minor_rev_level, 2);
  74         check_field(s_lastcheck, 4);
  75         check_field(s_checkinterval, 4);
  76         check_field(s_creator_os, 4);
  77         check_field(s_rev_level, 4);
  78         check_field(s_def_resuid, 2);
  79         check_field(s_def_resgid, 2);
  80         check_field(s_first_ino, 4);
  81         check_field(s_inode_size, 2);
  82         check_field(s_block_group_nr, 2);
  83         check_field(s_feature_compat, 4);
  84         check_field(s_feature_incompat, 4);
  85         check_field(s_feature_ro_compat, 4);
  86         check_field(s_uuid, 16);
  87         check_field(s_volume_name, 16);
  88         check_field(s_last_mounted, 64);
  89         check_field(s_algorithm_usage_bitmap, 4);
  90         check_field(s_prealloc_blocks, 1);
  91         check_field(s_prealloc_dir_blocks, 1);
  92         check_field(s_reserved_gdt_blocks, 2);
  93         check_field(s_journal_uuid, 16);
  94         check_field(s_journal_inum, 4);
  95         check_field(s_journal_dev, 4);
  96         check_field(s_last_orphan, 4);
  97         check_field(s_hash_seed, 4 * 4);
  98         check_field(s_def_hash_version, 1);
  99         check_field(s_jnl_backup_type, 1);
 100         check_field(s_desc_size, 2);
 101         check_field(s_default_mount_opts, 4);
 102         check_field(s_first_meta_bg, 4);
 103         check_field(s_mkfs_time, 4);
 104         check_field(s_jnl_blocks, 17 * 4);
 105         check_field(s_blocks_count_hi, 4);
 106         check_field(s_r_blocks_count_hi, 4);
 107         check_field(s_free_blocks_hi, 4);
 108         check_field(s_min_extra_isize, 2);
 109         check_field(s_want_extra_isize, 2);
 110         check_field(s_flags, 4);
 111         check_field(s_raid_stride, 2);
 112         check_field(s_mmp_update_interval, 2);
 113         check_field(s_mmp_block, 8);
 114         check_field(s_raid_stripe_width, 4);
 115         check_field(s_log_groups_per_flex, 1);
 116         check_field(s_checksum_type, 1);
 117         check_field(s_encryption_level, 1);
 118         check_field(s_reserved_pad, 1);
 119         check_field(s_kbytes_written, 8);
 120         check_field(s_snapshot_inum, 4);
 121         check_field(s_snapshot_id, 4);
 122         check_field(s_snapshot_r_blocks_count, 8);
 123         check_field(s_snapshot_list, 4);
 124         check_field(s_error_count, 4);
 125         check_field(s_first_error_time, 4);
 126         check_field(s_first_error_ino, 4);
 127         check_field(s_first_error_block, 8);
 128         check_field(s_first_error_func, 32);
 129         check_field(s_first_error_line, 4);
 130         check_field(s_last_error_time, 4);
 131         check_field(s_last_error_ino, 4);
 132         check_field(s_last_error_line, 4);
 133         check_field(s_last_error_block, 8);
 134         check_field(s_last_error_func, 32);
 135         check_field(s_mount_opts, 64);
 136         check_field(s_usr_quota_inum, 4);
 137         check_field(s_grp_quota_inum, 4);
 138         check_field(s_overhead_clusters, 4);
 139         check_field(s_backup_bgs, 8);
 140         check_field(s_encrypt_algos, 4);
 141         check_field(s_encrypt_pw_salt, 16);
 142         check_field(s_lpf_ino, 4);
 143         check_field(s_prj_quota_inum, 4);
 144         check_field(s_checksum_seed, 4);
 145         check_field(s_wtime_hi, 1);
 146         check_field(s_mtime_hi, 1);
 147         check_field(s_mkfs_time_hi, 1);
 148         check_field(s_lastcheck_hi, 1);
 149         check_field(s_first_error_time_hi, 1);
 150         check_field(s_last_error_time_hi, 1);
 151         check_field(s_pad, 2);
 152         check_field(s_encoding, 2);
 153         check_field(s_encoding_flags, 2);
 154         check_field(s_reserved, 95 * 4);
 155         check_field(s_checksum, 4);
 156         do_field("Superblock end", 0, 0, cur_offset, 1024);
 157 #endif
 158         return 0;
 159 }