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
do_field(const char * field,unsigned size,unsigned cur_size,unsigned offset,unsigned cur_offset)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
main(int argc,char ** argv)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_blocks, 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_reserved, 98 * 4);
146 check_field(s_checksum, 4);
147 do_field("Superblock end", 0, 0, cur_offset, 1024);
148 #endif
149 return 0;
150 }
151