Old version of inode reallocator (merged into e2fsprogs fork)
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/*
* check_uninit.c --- check_block_uninit() and check_inode_uninit() functions
* copy-pasted from e2fsprogs: lib/ext2fs/alloc.c
*
* Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Library
* General Public License, version 2.
* %End-Header%
*/
#include "check_uninit.h"
/*
* Check for uninit block bitmaps and deal with them appropriately
*/
void check_block_uninit(ext2_filsys fs, ext2fs_block_bitmap map, dgrp_t group)
{
blk_t i;
blk64_t blk, super_blk, old_desc_blk, new_desc_blk;
int old_desc_blocks;
if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) ||
!(ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT)))
return;
blk = (group * fs->super->s_blocks_per_group) +
fs->super->s_first_data_block;
ext2fs_super_and_bgd_loc2(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;
for (i=0; i < fs->super->s_blocks_per_group; i++, blk++)
ext2fs_fast_unmark_block_bitmap2(map, blk);
blk = (group * fs->super->s_blocks_per_group) +
fs->super->s_first_data_block;
for (i=0; i < fs->super->s_blocks_per_group; i++, blk++) {
if ((blk == super_blk) ||
(old_desc_blk && old_desc_blocks &&
(blk >= old_desc_blk) &&
(blk < old_desc_blk + old_desc_blocks)) ||
(new_desc_blk && (blk == new_desc_blk)) ||
(blk == ext2fs_block_bitmap_loc(fs, group)) ||
(blk == ext2fs_inode_bitmap_loc(fs, group)) ||
(blk >= ext2fs_inode_table_loc(fs, group) &&
(blk < ext2fs_inode_table_loc(fs, group)
+ fs->inode_blocks_per_group)))
ext2fs_fast_mark_block_bitmap2(map, blk);
}
ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
ext2fs_group_desc_csum_set(fs, group);
ext2fs_mark_super_dirty(fs);
ext2fs_mark_bb_dirty(fs);
}
/*
* Check for uninit inode bitmaps and deal with them appropriately
*/
void check_inode_uninit(ext2_filsys fs, ext2fs_inode_bitmap map, dgrp_t group)
{
ext2_ino_t i, ino;
if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) ||
!(ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)))
return;
ino = (group * fs->super->s_inodes_per_group) + 1;
for (i=0; i < fs->super->s_inodes_per_group; i++, ino++)
ext2fs_fast_unmark_inode_bitmap2(map, ino);
ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
ext2fs_group_desc_csum_set(fs, group);
ext2fs_mark_ib_dirty(fs);
ext2fs_mark_super_dirty(fs);
check_block_uninit(fs, fs->block_map, group);
}