mirror of https://github.com/vitalif/e2fsprogs
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* alloc_tables.c --- Allocate tables for a newly initialized
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* filesystem. Used by mke2fs when initializing a filesystem
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*
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* Copyright (C) 1996 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <time.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <linux/ext2_fs.h>
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#include "ext2fs.h"
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errcode_t ext2fs_allocate_tables(ext2_filsys fs)
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{
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errcode_t retval;
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blk_t group_blk, last_blk, new_blk, blk;
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int i, j;
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group_blk = fs->super->s_first_data_block;
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for (i = 0; i < fs->group_desc_count; i++) {
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last_blk = group_blk + fs->super->s_blocks_per_group;
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/*
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* Allocate the block bitmap
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*/
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retval = ext2fs_get_free_blocks(fs, group_blk, last_blk,
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1, fs->block_map, &new_blk);
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if (retval)
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return retval;
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ext2fs_mark_block_bitmap(fs->block_map, new_blk);
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fs->group_desc[i].bg_block_bitmap = new_blk;
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/*
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* ... and the inode bitmap
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*/
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retval = ext2fs_get_free_blocks(fs, group_blk, last_blk,
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1, fs->block_map, &new_blk);
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if (retval)
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return retval;
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ext2fs_mark_block_bitmap(fs->block_map, new_blk);
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fs->group_desc[i].bg_inode_bitmap = new_blk;
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/*
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* Finally, allocate the inode table
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*/
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retval = ext2fs_get_free_blocks(fs, group_blk, last_blk,
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fs->inode_blocks_per_group,
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fs->block_map, &new_blk);
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if (retval)
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return retval;
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for (j=0, blk = new_blk;
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j < fs->inode_blocks_per_group;
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j++, blk++)
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ext2fs_mark_block_bitmap(fs->block_map, blk);
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fs->group_desc[i].bg_inode_table = new_blk;
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/*
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* Increment the start of the block group
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*/
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group_blk += fs->super->s_blocks_per_group;
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}
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return 0;
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}
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