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/*
* alloc_stats.c --- Update allocation statistics for ext2fs
*
* Copyright (C) 2001 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 "config.h"
#include <stdio.h>
#include "ext2_fs.h"
#include "ext2fs.h"
void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
int inuse, int isdir)
{
int group = ext2fs_group_of_ino(fs, ino);
#ifndef OMIT_COM_ERR
if (ino > fs->super->s_inodes_count) {
com_err("ext2fs_inode_alloc_stats2", 0,
"Illegal inode number: %lu", (unsigned long) ino);
return;
}
#endif
if (inuse > 0)
ext2fs_mark_inode_bitmap2(fs->inode_map, ino);
else
ext2fs_unmark_inode_bitmap2(fs->inode_map, ino);
ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) - inuse);
if (isdir)
ext2fs_bg_used_dirs_count_set(fs, group, ext2fs_bg_used_dirs_count(fs, group) + inuse);
/* We don't strictly need to be clearing the uninit flag if inuse < 0
* (i.e. freeing inodes) but it also means something is bad. */
ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
ext2_ino_t first_unused_inode = fs->super->s_inodes_per_group -
ext2fs_bg_itable_unused(fs, group) +
group * fs->super->s_inodes_per_group + 1;
if (ino >= first_unused_inode)
ext2fs_bg_itable_unused_set(fs, group, group * fs->super->s_inodes_per_group + fs->super->s_inodes_per_group - ino);
ext2fs_group_desc_csum_set(fs, group);
}
fs->super->s_free_inodes_count -= inuse;
ext2fs_mark_super_dirty(fs);
ext2fs_mark_ib_dirty(fs);
}
void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse)
{
ext2fs_inode_alloc_stats2(fs, ino, inuse, 0);
}
void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse)
{
int group = ext2fs_group_of_blk2(fs, blk);
#ifndef OMIT_COM_ERR
if (blk >= ext2fs_blocks_count(fs->super)) {
com_err("ext2fs_block_alloc_stats", 0,
"Illegal block number: %lu", (unsigned long) blk);
return;
}
#endif
if (inuse > 0)
ext2fs_mark_block_bitmap2(fs->block_map, blk);
else
ext2fs_unmark_block_bitmap2(fs->block_map, blk);
ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) - inuse);
ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
ext2fs_group_desc_csum_set(fs, group);
ext2fs_free_blocks_count_add(fs->super,
-inuse * EXT2FS_CLUSTER_RATIO(fs));
ext2fs_mark_super_dirty(fs);
ext2fs_mark_bb_dirty(fs);
if (fs->block_alloc_stats)
(fs->block_alloc_stats)(fs, (blk64_t) blk, inuse);
}
void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
{
ext2fs_block_alloc_stats2(fs, blk, inuse);
}
void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
void (*func)(ext2_filsys fs,
blk64_t blk,
int inuse),
void (**old)(ext2_filsys fs,
blk64_t blk,
int inuse))
{
if (!fs || fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS)
return;
if (old)
*old = fs->block_alloc_stats;
fs->block_alloc_stats = func;
}
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