extern void initial_image_hdr(char* device, image_head* image_hdr){
fs_open(device);
if (MAGIC == MINIX_SUPER_MAGIC) {
fs_version = 1;
} else if (MAGIC == MINIX_SUPER_MAGIC2) {
fs_version = 1;
} else if (MAGIC == MINIX2_SUPER_MAGIC) {
fs_version = 2;
} else if (MAGIC == MINIX2_SUPER_MAGIC2) {
fs_version = 2;
} else if (MAGIC3 == MINIX3_SUPER_MAGIC){
fs_version = 3;
} else
log_mesg(0, 1, 1, fs_opt.debug, "%s: bad magic number in super-block", __FILE__);
log_mesg(0, 0, 0, fs_opt.debug, "%s: get_first_zone %lu\n", __FILE__, get_first_zone());
log_mesg(0, 0, 0, fs_opt.debug, "%s: get_nzones %lu\n", __FILE__, get_nzones());
log_mesg(0, 0, 0, fs_opt.debug, "%s: zones map size %lu\n", __FILE__, get_nzmaps());
strncpy(image_hdr->magic, IMAGE_MAGIC, IMAGE_MAGIC_SIZE);
strncpy(image_hdr->fs, minix_MAGIC, FS_MAGIC_SIZE);
image_hdr->block_size = get_block_size();
image_hdr->totalblock = get_nzones();
image_hdr->usedblocks = count_used_block();
image_hdr->device_size = get_nzones()*get_block_size();
fs_close();
}
void read_super_blocks(char* device, file_system_info* fs_info) {
fs_open(device);
if (MAGIC == MINIX_SUPER_MAGIC) {
fs_version = 1;
} else if (MAGIC == MINIX_SUPER_MAGIC2) {
fs_version = 1;
} else if (MAGIC == MINIX2_SUPER_MAGIC) {
fs_version = 2;
} else if (MAGIC == MINIX2_SUPER_MAGIC2) {
fs_version = 2;
} else if (MAGIC3 == MINIX3_SUPER_MAGIC) {
fs_version = 3;
} else
log_mesg(0, 1, 1, fs_opt.debug, "%s: bad magic number in super-block", __FILE__);
log_mesg(0, 0, 0, fs_opt.debug, "%s: get_first_zone %lu\n", __FILE__, get_first_zone());
log_mesg(0, 0, 0, fs_opt.debug, "%s: get_nzones %lu\n", __FILE__, get_nzones());
log_mesg(0, 0, 0, fs_opt.debug, "%s: zones map size %lu\n", __FILE__, get_nzmaps());
strncpy(fs_info->fs, minix_MAGIC, FS_MAGIC_SIZE);
fs_info->block_size = get_block_size();
fs_info->totalblock = get_nzones();
fs_info->usedblocks = count_used_block();
fs_info->device_size = fs_info->totalblock * fs_info->block_size;
fs_close();
}