/*
- * alloc_sb.c --- Allocate the superblock and block group descriptors for a
+ * alloc_sb.c --- Allocate the superblock and block group descriptors for a
* newly initialized filesystem. Used by mke2fs when initializing a filesystem
*
* Copyright (C) 1994, 1995, 1996, 2003 Theodore Ts'o.
*
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
*
* See also the comment for ext2fs_super_and_bgd_loc()
*/
-int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
+int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
dgrp_t group,
ext2fs_block_bitmap bmap)
{
- blk_t super_blk, old_desc_blk, new_desc_blk;
- int j, old_desc_blocks, num_blocks;
+ blk64_t super_blk, old_desc_blk, new_desc_blk;
+ blk_t used_blks;
+ int old_desc_blocks, num_blocks;
- num_blocks = ext2fs_super_and_bgd_loc(fs, group, &super_blk,
- &old_desc_blk, &new_desc_blk, 0);
+ ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
+ &old_desc_blk, &new_desc_blk, &used_blks);
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
+ if (ext2fs_has_feature_meta_bg(fs->super))
old_desc_blocks = fs->super->s_first_meta_bg;
else
- old_desc_blocks =
+ old_desc_blocks =
fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
if (super_blk || (group == 0))
- ext2fs_mark_block_bitmap(bmap, super_blk);
+ ext2fs_mark_block_bitmap2(bmap, super_blk);
+ if ((group == 0) && (fs->blocksize == 1024) &&
+ EXT2FS_CLUSTER_RATIO(fs) > 1)
+ ext2fs_mark_block_bitmap2(bmap, 0);
if (old_desc_blk) {
- for (j=0; j < old_desc_blocks; j++)
- ext2fs_mark_block_bitmap(bmap, old_desc_blk + j);
+ num_blocks = old_desc_blocks;
+ if (old_desc_blk + num_blocks >= ext2fs_blocks_count(fs->super))
+ num_blocks = ext2fs_blocks_count(fs->super) -
+ old_desc_blk;
+ ext2fs_mark_block_bitmap_range2(bmap, old_desc_blk, num_blocks);
}
if (new_desc_blk)
- ext2fs_mark_block_bitmap(bmap, new_desc_blk);
+ ext2fs_mark_block_bitmap2(bmap, new_desc_blk);
- return num_blocks;
+ num_blocks = ext2fs_group_blocks_count(fs, group);
+ num_blocks -= 2 + fs->inode_blocks_per_group + used_blks;
+
+ return num_blocks ;
}