mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-15 16:05:10 +01:00
119 lines
2.3 KiB
C
119 lines
2.3 KiB
C
/*
|
|
* freefs.c --- free an ext2 filesystem
|
|
*
|
|
* 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 "config.h"
|
|
#include <stdio.h>
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "ext2_fs.h"
|
|
#include "ext2fsP.h"
|
|
|
|
static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
|
|
|
|
void ext2fs_free(ext2_filsys fs)
|
|
{
|
|
if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
|
|
return;
|
|
if (fs->image_io != fs->io) {
|
|
if (fs->image_io)
|
|
io_channel_close(fs->image_io);
|
|
}
|
|
if (fs->io) {
|
|
io_channel_close(fs->io);
|
|
}
|
|
if (fs->device_name)
|
|
ext2fs_free_mem(&fs->device_name);
|
|
if (fs->super)
|
|
ext2fs_free_mem(&fs->super);
|
|
if (fs->orig_super)
|
|
ext2fs_free_mem(&fs->orig_super);
|
|
if (fs->group_desc)
|
|
ext2fs_free_mem(&fs->group_desc);
|
|
if (fs->block_map)
|
|
ext2fs_free_block_bitmap(fs->block_map);
|
|
if (fs->inode_map)
|
|
ext2fs_free_inode_bitmap(fs->inode_map);
|
|
|
|
if (fs->badblocks)
|
|
ext2fs_badblocks_list_free(fs->badblocks);
|
|
fs->badblocks = 0;
|
|
|
|
if (fs->dblist)
|
|
ext2fs_free_dblist(fs->dblist);
|
|
|
|
if (fs->icache)
|
|
ext2fs_free_inode_cache(fs->icache);
|
|
|
|
if (fs->mmp_buf)
|
|
ext2fs_free_mem(&fs->mmp_buf);
|
|
if (fs->mmp_cmp)
|
|
ext2fs_free_mem(&fs->mmp_cmp);
|
|
|
|
fs->magic = 0;
|
|
|
|
ext2fs_free_mem(&fs);
|
|
}
|
|
|
|
/*
|
|
* Free the inode cache structure
|
|
*/
|
|
static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
|
|
{
|
|
if (--icache->refcount)
|
|
return;
|
|
if (icache->buffer)
|
|
ext2fs_free_mem(&icache->buffer);
|
|
if (icache->cache)
|
|
ext2fs_free_mem(&icache->cache);
|
|
icache->buffer_blk = 0;
|
|
ext2fs_free_mem(&icache);
|
|
}
|
|
|
|
/*
|
|
* This procedure frees a badblocks list.
|
|
*/
|
|
void ext2fs_u32_list_free(ext2_u32_list bb)
|
|
{
|
|
if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
|
|
return;
|
|
|
|
if (bb->list)
|
|
ext2fs_free_mem(&bb->list);
|
|
bb->list = 0;
|
|
ext2fs_free_mem(&bb);
|
|
}
|
|
|
|
void ext2fs_badblocks_list_free(ext2_badblocks_list bb)
|
|
{
|
|
ext2fs_u32_list_free((ext2_u32_list) bb);
|
|
}
|
|
|
|
|
|
/*
|
|
* Free a directory block list
|
|
*/
|
|
void ext2fs_free_dblist(ext2_dblist dblist)
|
|
{
|
|
if (!dblist || (dblist->magic != EXT2_ET_MAGIC_DBLIST))
|
|
return;
|
|
|
|
if (dblist->list)
|
|
ext2fs_free_mem(&dblist->list);
|
|
dblist->list = 0;
|
|
if (dblist->fs && dblist->fs->dblist == dblist)
|
|
dblist->fs->dblist = 0;
|
|
dblist->magic = 0;
|
|
ext2fs_free_mem(&dblist);
|
|
}
|
|
|