mirror of https://github.com/vitalif/e2fsprogs
146 lines
3.8 KiB
C
146 lines
3.8 KiB
C
/*
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* This testing program makes sure superblock size is 1024 bytes long
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*
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* Copyright (C) 2007 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "ext2_fs.h"
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#define sb_struct ext2_super_block
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#define sb_struct_name "ext2_super_block"
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struct sb_struct sb;
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int verbose = 0;
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#define offsetof(type, member) __builtin_offsetof (type, member)
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#define check_field(x) cur_offset = do_field(#x, sizeof(sb.x), \
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offsetof(struct sb_struct, x), \
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cur_offset)
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static int do_field(const char *field, size_t size, int offset, int cur_offset)
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{
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if (offset != cur_offset) {
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printf("Warning! Unexpected offset at %s\n", field);
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exit(1);
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}
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printf("%8d %-30s %3u\n", offset, field, (unsigned) size);
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return offset + size;
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}
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void check_superblock_fields()
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{
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#if (__GNUC__ >= 4)
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int cur_offset = 0;
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printf("%8s %-30s %3s\n", "offset", "field", "size");
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check_field(s_inodes_count);
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check_field(s_blocks_count);
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check_field(s_r_blocks_count);
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check_field(s_free_blocks_count);
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check_field(s_free_inodes_count);
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check_field(s_first_data_block);
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check_field(s_log_block_size);
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check_field(s_log_cluster_size);
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check_field(s_blocks_per_group);
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check_field(s_clusters_per_group);
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check_field(s_inodes_per_group);
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check_field(s_mtime);
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check_field(s_wtime);
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check_field(s_mnt_count);
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check_field(s_max_mnt_count);
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check_field(s_magic);
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check_field(s_state);
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check_field(s_errors);
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check_field(s_minor_rev_level);
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check_field(s_lastcheck);
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check_field(s_checkinterval);
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check_field(s_creator_os);
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check_field(s_rev_level);
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check_field(s_def_resuid);
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check_field(s_def_resgid);
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check_field(s_first_ino);
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check_field(s_inode_size);
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check_field(s_block_group_nr);
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check_field(s_feature_compat);
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check_field(s_feature_incompat);
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check_field(s_feature_ro_compat);
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check_field(s_uuid);
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check_field(s_volume_name);
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check_field(s_last_mounted);
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check_field(s_algorithm_usage_bitmap);
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check_field(s_prealloc_blocks);
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check_field(s_prealloc_dir_blocks);
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check_field(s_reserved_gdt_blocks);
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check_field(s_journal_uuid);
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check_field(s_journal_inum);
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check_field(s_journal_dev);
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check_field(s_last_orphan);
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check_field(s_hash_seed);
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check_field(s_def_hash_version);
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check_field(s_jnl_backup_type);
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check_field(s_desc_size);
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check_field(s_default_mount_opts);
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check_field(s_first_meta_bg);
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check_field(s_mkfs_time);
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check_field(s_jnl_blocks);
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check_field(s_blocks_count_hi);
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check_field(s_r_blocks_count_hi);
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check_field(s_free_blocks_hi);
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check_field(s_min_extra_isize);
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check_field(s_want_extra_isize);
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check_field(s_flags);
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check_field(s_raid_stride);
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check_field(s_mmp_interval);
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check_field(s_mmp_block);
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check_field(s_raid_stripe_width);
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check_field(s_log_groups_per_flex);
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check_field(s_reserved_char_pad);
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check_field(s_reserved_pad);
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check_field(s_kbytes_written);
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check_field(s_snapshot_inum);
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check_field(s_snapshot_id);
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check_field(s_snapshot_r_blocks_count);
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check_field(s_snapshot_list);
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check_field(s_error_count);
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check_field(s_first_error_time);
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check_field(s_first_error_ino);
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check_field(s_first_error_block);
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check_field(s_first_error_func);
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check_field(s_first_error_line);
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check_field(s_last_error_time);
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check_field(s_last_error_ino);
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check_field(s_last_error_line);
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check_field(s_last_error_block);
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check_field(s_last_error_func);
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check_field(s_mount_opts);
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check_field(s_usr_quota_inum);
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check_field(s_grp_quota_inum);
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check_field(s_overhead_blocks);
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check_field(s_reserved);
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printf("Ending offset is %d\n\n", cur_offset);
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#endif
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}
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int main(int argc, char **argv)
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{
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int s = sizeof(struct sb_struct);
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check_superblock_fields();
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printf("Size of struct %s is %d\n", sb_struct_name, s);
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if (s != 1024) {
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exit(1);
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}
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exit(0);
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}
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