fs_old_postbl_start
memset(&sblock->fs_old_postbl_start, 0xff, 256);
(char *)(&sblock->fs_old_postbl_start) -
memmove(postbl, (&(*fssave)->fs_old_postbl_start),
memmove((&(*fssave)->fs_old_postbl_start), postbl,
memmove(&fs->fs_old_postbl_start, &fssave->fs_old_postbl_start,
memset(iobuf + offsetof(struct fs, fs_old_postbl_start),
memset(iobuf + offsetof(struct fs, fs_old_postbl_start),
memcpy(ump->um_oldfscompat, &fs->fs_old_postbl_start, 512);
memcpy(&fs->fs_old_postbl_start, ump->um_oldfscompat, 512);
((fs_)->fs_old_postbloff == offsetof(struct fs, fs_old_postbl_start))) \
(bswap32(fs->fs_old_postbloff) == offsetof(struct fs, fs_old_postbl_start)))) {
memcpy(opostbl, &fs->fs_old_postbl_start, 512);
(fs->fs_old_postbloff == offsetof(struct fs, fs_old_postbl_start)))) {
memcpy(opostbl, &fs->fs_old_postbl_start, 512);