mirror of
https://github.com/nitraiolo/CfgUSBLoader.git
synced 2024-12-05 01:24:14 +01:00
107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
|
/*
|
||
|
|
* 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 <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_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;
|
||
|
|
}
|