58 static unsigned int calc_reserved_gdt_blocks(ext2_filsys fs)  in calc_reserved_gdt_blocks()  argument
60 	struct ext2_super_block *sb = fs->super;  in calc_reserved_gdt_blocks()
77 	rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - fs->desc_blocks;  in calc_reserved_gdt_blocks()
92 	ext2_filsys	fs;  in ext2fs_initialize()  local
115 	retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);  in ext2fs_initialize()
119 	memset(fs, 0, sizeof(struct struct_ext2_filsys));  in ext2fs_initialize()
120 	fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS;  in ext2fs_initialize()
121 	fs->flags = flags | EXT2_FLAG_RW;  in ext2fs_initialize()
122 	fs->umask = 022;  in ext2fs_initialize()
123 	fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;  in ext2fs_initialize()
125 	fs->flags |= EXT2_FLAG_SWAP_BYTES;  in ext2fs_initialize()
130 		fs->now = strtoul(time_env, NULL, 0);  in ext2fs_initialize()
138 	retval = manager->open(name, io_flags, &fs->io);  in ext2fs_initialize()
141 	fs->image_io = fs->io;  in ext2fs_initialize()
142 	fs->io->app_data = fs;  in ext2fs_initialize()
143 	retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name);  in ext2fs_initialize()
147 	strcpy(fs->device_name, name);  in ext2fs_initialize()
151 	fs->super = super;  in ext2fs_initialize()
214 	super->s_mkfs_time = super->s_lastcheck = fs->now ? fs->now : time(NULL);  in ext2fs_initialize()
218 	fs->fragsize = fs->blocksize = EXT2_BLOCK_SIZE(super);  in ext2fs_initialize()
219 	fs->cluster_ratio_bits = super->s_log_cluster_size -  in ext2fs_initialize()
227 		    ((param->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs)) !=  in ext2fs_initialize()
237 				EXT2FS_CLUSTER_RATIO(fs);  in ext2fs_initialize()
239 			super->s_clusters_per_group = fs->blocksize * 8;  in ext2fs_initialize()
241 			super->s_clusters_per_group = (fs->blocksize - 1) * 8;  in ext2fs_initialize()
244 		bpg = EXT2FS_C2B(fs,  in ext2fs_initialize()
252 		set_field(s_blocks_per_group, fs->blocksize * 8);  in ext2fs_initialize()
259 				~((blk64_t) EXT2FS_CLUSTER_MASK(fs)));  in ext2fs_initialize()
273 		fs->group_desc_count = 0;  in ext2fs_initialize()
274 		ext2fs_mark_super_dirty(fs);  in ext2fs_initialize()
275 		*ret_fs = fs;  in ext2fs_initialize()
280 	fs->group_desc_count = (dgrp_t) ext2fs_div64_ceil(  in ext2fs_initialize()
283 	if (fs->group_desc_count == 0) {  in ext2fs_initialize()
292 	fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,  in ext2fs_initialize()
295 	i = fs->blocksize >= 4096 ? 1 : 4096 / fs->blocksize;  in ext2fs_initialize()
316 	ipg = ext2fs_div_ceil(super->s_inodes_count, fs->group_desc_count);  in ext2fs_initialize()
317 	if (ipg > fs->blocksize * 8) {  in ext2fs_initialize()
342 	fs->inode_blocks_per_group = (((super->s_inodes_per_group *  in ext2fs_initialize()
346 	super->s_inodes_per_group = ((fs->inode_blocks_per_group *  in ext2fs_initialize()
357 	fs->inode_blocks_per_group = (((super->s_inodes_per_group *  in ext2fs_initialize()
365 	if ((__u64)super->s_inodes_per_group * fs->group_desc_count > ~0U) {  in ext2fs_initialize()
370 		fs->group_desc_count;  in ext2fs_initialize()
377 		rsv_gdt = calc_reserved_gdt_blocks(fs);  in ext2fs_initialize()
386 	if (super->s_reserved_gdt_blocks + fs->desc_blocks >  in ext2fs_initialize()
388 		ext2fs_set_feature_meta_bg(fs->super);  in ext2fs_initialize()
389 		ext2fs_clear_feature_resize_inode(fs->super);  in ext2fs_initialize()
399 	overhead = (int) (3 + fs->inode_blocks_per_group +  in ext2fs_initialize()
402 	if (ext2fs_has_feature_meta_bg(fs->super))  in ext2fs_initialize()
405 		overhead += fs->desc_blocks;  in ext2fs_initialize()
420 	overhead = (int) (2 + fs->inode_blocks_per_group);  in ext2fs_initialize()
427 		if (fs->group_desc_count == 2)  in ext2fs_initialize()
432 		has_bg = ext2fs_bg_has_super(fs, fs->group_desc_count - 1);  in ext2fs_initialize()
434 		overhead += 1 + fs->desc_blocks + super->s_reserved_gdt_blocks;  in ext2fs_initialize()
437 	if ((fs->group_desc_count == 1) && rem && (rem < overhead)) {  in ext2fs_initialize()
464 		if (super->s_backup_bgs[0] >= fs->group_desc_count)  in ext2fs_initialize()
465 			super->s_backup_bgs[0] = fs->group_desc_count - 1;  in ext2fs_initialize()
466 		if (super->s_backup_bgs[1] >= fs->group_desc_count)  in ext2fs_initialize()
467 			super->s_backup_bgs[1] = fs->group_desc_count - 1;  in ext2fs_initialize()
477 	retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);  in ext2fs_initialize()
482 	strcat(buf, fs->device_name);  in ext2fs_initialize()
483 	retval = ext2fs_allocate_subcluster_bitmap(fs, buf, &fs->block_map);  in ext2fs_initialize()
488 	strcat(buf, fs->device_name);  in ext2fs_initialize()
489 	retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);  in ext2fs_initialize()
495 	retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,  in ext2fs_initialize()
496 				&fs->group_desc);  in ext2fs_initialize()
500 	memset(fs->group_desc, 0, (size_t) fs->desc_blocks * fs->blocksize);  in ext2fs_initialize()
514 	csum_flag = ext2fs_has_group_desc_csum(fs);  in ext2fs_initialize()
516 	for (i = 0; i < fs->group_desc_count; i++) {  in ext2fs_initialize()
522 			if (i != fs->group_desc_count - 1)  in ext2fs_initialize()
523 				ext2fs_bg_flags_set(fs, i,  in ext2fs_initialize()
525 			ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_UNINIT);  in ext2fs_initialize()
536 			ext2fs_bg_itable_unused_set(fs, i, numblocks);  in ext2fs_initialize()
538 		numblocks = ext2fs_reserve_super_and_bgd(fs, i, fs->block_map);  in ext2fs_initialize()
539 		if (fs->super->s_log_groups_per_flex)  in ext2fs_initialize()
540 			numblocks += 2 + fs->inode_blocks_per_group;  in ext2fs_initialize()
543 		ext2fs_bg_free_blocks_count_set(fs, i, numblocks);  in ext2fs_initialize()
544 		ext2fs_bg_free_inodes_count_set(fs, i, fs->super->s_inodes_per_group);  in ext2fs_initialize()
545 		ext2fs_bg_used_dirs_count_set(fs, i, 0);  in ext2fs_initialize()
546 		ext2fs_group_desc_csum_set(fs, i);  in ext2fs_initialize()
548 	free_blocks &= ~EXT2FS_CLUSTER_MASK(fs);  in ext2fs_initialize()
558 	ext2fs_mark_super_dirty(fs);  in ext2fs_initialize()
559 	ext2fs_mark_bb_dirty(fs);  in ext2fs_initialize()
560 	ext2fs_mark_ib_dirty(fs);  in ext2fs_initialize()
562 	io_channel_set_blksize(fs->io, fs->blocksize);  in ext2fs_initialize()
564 	*ret_fs = fs;  in ext2fs_initialize()
568 	ext2fs_free(fs);  in ext2fs_initialize()