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https://github.com/Fledge68/WiiFlow_Lite.git
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107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/*
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* alloc_stats.c --- Update allocation statistics for ext2fs
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*
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* Copyright (C) 2001 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 Library
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* General Public License, version 2.
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* %End-Header%
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*/
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#include <stdio.h>
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#include "ext2_fs.h"
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#include "ext2fs.h"
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void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
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int inuse, int isdir)
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{
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int group = ext2fs_group_of_ino(fs, ino);
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#ifndef OMIT_COM_ERR
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if (ino > fs->super->s_inodes_count) {
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com_err("ext2fs_inode_alloc_stats2", 0,
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"Illegal inode number: %lu", (unsigned long) ino);
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return;
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}
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#endif
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if (inuse > 0)
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ext2fs_mark_inode_bitmap2(fs->inode_map, ino);
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else
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ext2fs_unmark_inode_bitmap2(fs->inode_map, ino);
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ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) - inuse);
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if (isdir)
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ext2fs_bg_used_dirs_count_set(fs, group, ext2fs_bg_used_dirs_count(fs, group) + inuse);
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/* We don't strictly need to be clearing the uninit flag if inuse < 0
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* (i.e. freeing inodes) but it also means something is bad. */
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ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
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if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
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EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
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ext2_ino_t first_unused_inode = fs->super->s_inodes_per_group -
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ext2fs_bg_itable_unused(fs, group) +
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group * fs->super->s_inodes_per_group + 1;
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if (ino >= first_unused_inode)
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ext2fs_bg_itable_unused_set(fs, group, group * fs->super->s_inodes_per_group + fs->super->s_inodes_per_group - ino);
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ext2fs_group_desc_csum_set(fs, group);
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}
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fs->super->s_free_inodes_count -= inuse;
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ext2fs_mark_super_dirty(fs);
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ext2fs_mark_ib_dirty(fs);
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}
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void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse)
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{
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ext2fs_inode_alloc_stats2(fs, ino, inuse, 0);
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}
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void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse)
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{
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int group = ext2fs_group_of_blk2(fs, blk);
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#ifndef OMIT_COM_ERR
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if (blk >= ext2fs_blocks_count(fs->super)) {
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com_err("ext2fs_block_alloc_stats", 0,
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"Illegal block number: %lu", (unsigned long) blk);
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return;
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}
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#endif
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if (inuse > 0)
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ext2fs_mark_block_bitmap2(fs->block_map, blk);
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else
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ext2fs_unmark_block_bitmap2(fs->block_map, blk);
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ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) - inuse);
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ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
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ext2fs_group_desc_csum_set(fs, group);
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ext2fs_free_blocks_count_add(fs->super, -inuse);
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ext2fs_mark_super_dirty(fs);
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ext2fs_mark_bb_dirty(fs);
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if (fs->block_alloc_stats)
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(fs->block_alloc_stats)(fs, (blk64_t) blk, inuse);
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}
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void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
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{
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ext2fs_block_alloc_stats2(fs, blk, inuse);
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}
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void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs,
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void (*func)(ext2_filsys fs,
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blk64_t blk,
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int inuse),
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void (**old)(ext2_filsys fs,
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blk64_t blk,
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int inuse))
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{
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if (!fs || fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS)
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return;
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if (old)
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*old = fs->block_alloc_stats;
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fs->block_alloc_stats = func;
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}
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