/* vi: set sw=4 ts=4: *//* * 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. * %End-Header% */#include <stdio.h>#include <string.h>#if HAVE_UNISTD_H#include <unistd.h>#endif#include <fcntl.h>#include <time.h>#if HAVE_SYS_STAT_H#include <sys/stat.h>#endif#if HAVE_SYS_TYPES_H#include <sys/types.h>#endif#include "ext2_fs.h"#include "ext2fs.h"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;	num_blocks = ext2fs_super_and_bgd_loc(fs, group, &super_blk,					      &old_desc_blk, &new_desc_blk, 0);	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)		old_desc_blocks = fs->super->s_first_meta_bg;	else		old_desc_blocks =			fs->desc_blocks + fs->super->s_reserved_gdt_blocks;	if (super_blk || (group == 0))		ext2fs_mark_block_bitmap(bmap, super_blk);	if (old_desc_blk) {		for (j=0; j < old_desc_blocks; j++)			ext2fs_mark_block_bitmap(bmap, old_desc_blk + j);	}	if (new_desc_blk)		ext2fs_mark_block_bitmap(bmap, new_desc_blk);	return num_blocks;}