1 /* 2 * This testing program makes sure the ext2_inode structure 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 struct ext2_inode_large inode; 20 21 #ifndef offsetof 22 #define offsetof(type, member) __builtin_offsetof(type, member) 23 #endif 24 25 #define check_field(x, s) cur_offset = do_field(#x, s, sizeof(inode.x), \ 26 offsetof(struct ext2_inode_large, x), \ 27 cur_offset) 28 29 static int do_field(const char *field, unsigned size, unsigned cur_size, 30 unsigned offset, unsigned cur_offset) 31 { 32 if (size != cur_size) { 33 printf("error: %s size %u should be %u\n", 34 field, cur_size, size); 35 exit(1); 36 } 37 if (offset != cur_offset) { 38 printf("error: %s offset %u should be %u\n", 39 field, cur_offset, offset); 40 exit(1); 41 } 42 printf("%8d %-30s %3u\n", offset, field, (unsigned) size); 43 return offset + size; 44 } 45 46 int main(int argc, char **argv) 47 { 48 #if (__GNUC__ >= 4) 49 int cur_offset = 0; 50 51 printf("%8s %-30s %3s\n", "offset", "field", "size"); 52 check_field(i_mode, 2); 53 check_field(i_uid, 2); 54 check_field(i_size, 4); 55 check_field(i_atime, 4); 56 check_field(i_ctime, 4); 57 check_field(i_mtime, 4); 58 check_field(i_dtime, 4); 59 check_field(i_gid, 2); 60 check_field(i_links_count, 2); 61 check_field(i_blocks, 4); 62 check_field(i_flags, 4); 63 check_field(osd1.linux1.l_i_version, 4); 64 check_field(i_block, 15 * 4); 65 check_field(i_generation, 4); 66 check_field(i_file_acl, 4); 67 check_field(i_size_high, 4); 68 check_field(i_faddr, 4); 69 check_field(osd2.linux2.l_i_blocks_hi, 2); 70 check_field(osd2.linux2.l_i_file_acl_high, 2); 71 check_field(osd2.linux2.l_i_uid_high, 2); 72 check_field(osd2.linux2.l_i_gid_high, 2); 73 check_field(osd2.linux2.l_i_checksum_lo, 2); 74 check_field(osd2.linux2.l_i_reserved, 2); 75 do_field("Small inode end", 0, 0, cur_offset, 128); 76 check_field(i_extra_isize, 2); 77 check_field(i_checksum_hi, 2); 78 check_field(i_ctime_extra, 4); 79 check_field(i_mtime_extra, 4); 80 check_field(i_atime_extra, 4); 81 check_field(i_crtime, 4); 82 check_field(i_crtime_extra, 4); 83 check_field(i_version_hi, 4); 84 check_field(i_projid, 4); 85 /* This size will change as new fields are added */ 86 do_field("Large inode end", 0, 0, cur_offset, sizeof(inode)); 87 #endif 88 return 0; 89 } 90
