143 void read_sb(int fd, struct ext4_super_block *sb)  in read_sb()  argument
151 	ret = read(fd, sb, sizeof(*sb));  in read_sb()
154 	if (ret != sizeof(*sb))  in read_sb()
159 void write_sb(int fd, unsigned long long offset, struct ext4_super_block *sb)  in write_sb()  argument
167 	ret = write(fd, sb, sizeof(*sb));  in write_sb()
170 	if (ret != sizeof(*sb))  in write_sb()
189 	write_sb(fd, 1024, aux_info.sb);  in block_device_write_sb()
250 		aux_info.sb = (struct ext4_super_block *)((char *)aux_info.sb_block + 1024);  in ext4_create_fs_aux_info()
252 		aux_info.sb = aux_info.sb_block;  in ext4_create_fs_aux_info()
257 	if (!aux_info.sb)  in ext4_create_fs_aux_info()
283 	struct ext4_super_block *sb = aux_info.sb;  in ext4_fill_in_sb()  local
285 	sb->s_inodes_count = info.inodes_per_group * aux_info.groups;  in ext4_fill_in_sb()
286 	sb->s_blocks_count_lo = aux_info.len_blocks;  in ext4_fill_in_sb()
287 	sb->s_r_blocks_count_lo = 0;  in ext4_fill_in_sb()
288 	sb->s_free_blocks_count_lo = 0;  in ext4_fill_in_sb()
289 	sb->s_free_inodes_count = 0;  in ext4_fill_in_sb()
290 	sb->s_first_data_block = aux_info.first_data_block;  in ext4_fill_in_sb()
291 	sb->s_log_block_size = log_2(info.block_size / 1024);  in ext4_fill_in_sb()
292 	sb->s_obso_log_frag_size = log_2(info.block_size / 1024);  in ext4_fill_in_sb()
293 	sb->s_blocks_per_group = info.blocks_per_group;  in ext4_fill_in_sb()
294 	sb->s_obso_frags_per_group = info.blocks_per_group;  in ext4_fill_in_sb()
295 	sb->s_inodes_per_group = info.inodes_per_group;  in ext4_fill_in_sb()
296 	sb->s_mtime = 0;  in ext4_fill_in_sb()
297 	sb->s_wtime = 0;  in ext4_fill_in_sb()
298 	sb->s_mnt_count = 0;  in ext4_fill_in_sb()
299 	sb->s_max_mnt_count = 10;  in ext4_fill_in_sb()
300 	sb->s_magic = EXT4_SUPER_MAGIC;  in ext4_fill_in_sb()
301 	sb->s_state = EXT4_VALID_FS;  in ext4_fill_in_sb()
302 	sb->s_errors = EXT4_ERRORS_RO;  in ext4_fill_in_sb()
303 	sb->s_minor_rev_level = 0;  in ext4_fill_in_sb()
304 	sb->s_lastcheck = 0;  in ext4_fill_in_sb()
305 	sb->s_checkinterval = 0;  in ext4_fill_in_sb()
306 	sb->s_creator_os = EXT4_OS_LINUX;  in ext4_fill_in_sb()
307 	sb->s_rev_level = EXT4_DYNAMIC_REV;  in ext4_fill_in_sb()
308 	sb->s_def_resuid = EXT4_DEF_RESUID;  in ext4_fill_in_sb()
309 	sb->s_def_resgid = EXT4_DEF_RESGID;  in ext4_fill_in_sb()
311 	sb->s_first_ino = EXT4_GOOD_OLD_FIRST_INO;  in ext4_fill_in_sb()
312 	sb->s_inode_size = info.inode_size;  in ext4_fill_in_sb()
313 	sb->s_block_group_nr = 0;  in ext4_fill_in_sb()
314 	sb->s_feature_compat = info.feat_compat;  in ext4_fill_in_sb()
315 	sb->s_feature_incompat = info.feat_incompat;  in ext4_fill_in_sb()
316 	sb->s_feature_ro_compat = info.feat_ro_compat;  in ext4_fill_in_sb()
319 	    uuid_generate(sb->s_uuid);  in ext4_fill_in_sb()
325 	    generate_sha1_uuid("extandroid/make_ext4fs", info.label, sb->s_uuid);  in ext4_fill_in_sb()
327 	memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));  in ext4_fill_in_sb()
328 	strncpy(sb->s_volume_name, info.label, sizeof(sb->s_volume_name));  in ext4_fill_in_sb()
329 	memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));  in ext4_fill_in_sb()
330 	sb->s_algorithm_usage_bitmap = 0;  in ext4_fill_in_sb()
332 	sb->s_reserved_gdt_blocks = info.bg_desc_reserve_blocks;  in ext4_fill_in_sb()
333 	sb->s_prealloc_blocks = 0;  in ext4_fill_in_sb()
334 	sb->s_prealloc_dir_blocks = 0;  in ext4_fill_in_sb()
338 		sb->s_journal_inum = EXT4_JOURNAL_INO;  in ext4_fill_in_sb()
339 	sb->s_journal_dev = 0;  in ext4_fill_in_sb()
340 	sb->s_last_orphan = 0;  in ext4_fill_in_sb()
341 	sb->s_hash_seed[0] = 0; /* FIXME */  in ext4_fill_in_sb()
342 	sb->s_def_hash_version = DX_HASH_TEA;  in ext4_fill_in_sb()
343 	sb->s_reserved_char_pad = EXT4_JNL_BACKUP_BLOCKS;  in ext4_fill_in_sb()
344 	sb->s_desc_size = sizeof(struct ext2_group_desc);  in ext4_fill_in_sb()
345 	sb->s_default_mount_opts = 0; /* FIXME */  in ext4_fill_in_sb()
346 	sb->s_first_meta_bg = 0;  in ext4_fill_in_sb()
347 	sb->s_mkfs_time = 0;  in ext4_fill_in_sb()
350 	sb->s_blocks_count_hi = aux_info.len_blocks >> 32;  in ext4_fill_in_sb()
351 	sb->s_r_blocks_count_hi = 0;  in ext4_fill_in_sb()
352 	sb->s_free_blocks_count_hi = 0;  in ext4_fill_in_sb()
353 	sb->s_min_extra_isize = sizeof(struct ext4_inode) -  in ext4_fill_in_sb()
355 	sb->s_want_extra_isize = sizeof(struct ext4_inode) -  in ext4_fill_in_sb()
357 	sb->s_flags = 2;  in ext4_fill_in_sb()
358 	sb->s_raid_stride = info.flash_logical_block_size / info.block_size;  in ext4_fill_in_sb()
361 		sb->s_raid_stride = 8192 / info.block_size;  in ext4_fill_in_sb()
363 	sb->s_mmp_interval = 0;  in ext4_fill_in_sb()
364 	sb->s_mmp_block = 0;  in ext4_fill_in_sb()
365 	sb->s_raid_stripe_width = info.flash_erase_block_size / info.block_size;  in ext4_fill_in_sb()
366 	sb->s_log_groups_per_flex = 0;  in ext4_fill_in_sb()
367 	sb->s_kbytes_written = 0;  in ext4_fill_in_sb()
376 				memcpy(aux_info.backup_sb[i], sb, sizeof(struct ext4_super_block));  in ext4_fill_in_sb()
392 		aux_info.bg_desc[i].bg_free_blocks_count = sb->s_blocks_per_group;  in ext4_fill_in_sb()
393 		aux_info.bg_desc[i].bg_free_inodes_count = sb->s_inodes_per_group;  in ext4_fill_in_sb()
410 void ext4_queue_sb(u64 start_block, struct ext4_super_block *sb)  in ext4_queue_sb()  argument
412 	sparse_file_add_data(ext4_sparse_file, sb, info.block_size, start_block);  in ext4_queue_sb()
415 void ext4_parse_sb_info(struct ext4_super_block *sb)  in ext4_parse_sb_info()  argument
417 	if (sb->s_magic != EXT4_SUPER_MAGIC)  in ext4_parse_sb_info()
420 	if ((sb->s_state & EXT4_VALID_FS) != EXT4_VALID_FS)  in ext4_parse_sb_info()
423 	ext4_parse_sb(sb, &info);  in ext4_parse_sb_info()
427 	memcpy(aux_info.sb, sb, sizeof(*sb));  in ext4_parse_sb_info()
429 	if (aux_info.first_data_block != sb->s_first_data_block)  in ext4_parse_sb_info()
496 	memcpy(aux_info.sb->s_jnl_blocks, &inode->i_block, sizeof(inode->i_block));  in ext4_create_journal_inode()
511 		aux_info.sb->s_free_blocks_count_lo += bg_free_blocks;  in ext4_update_free()
514 		aux_info.sb->s_free_inodes_count += bg_free_inodes;  in ext4_update_free()
520 		crc = ext4_crc16(~0, aux_info.sb->s_uuid, sizeof(aux_info.sb->s_uuid));  in ext4_update_free()
607 	struct ext4_super_block sb;  in read_ext()  local
609 	read_sb(fd, &sb);  in read_ext()
611 	ext4_parse_sb_info(&sb);  in read_ext()
639 			aux_info.sb->s_inodes_count - aux_info.sb->s_free_inodes_count,  in read_ext()
640 			aux_info.sb->s_inodes_count,  in read_ext()
641 			aux_info.sb->s_blocks_count_lo - aux_info.sb->s_free_blocks_count_lo,  in read_ext()
642 			aux_info.sb->s_blocks_count_lo);  in read_ext()