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/*
* freefs.c --- free an ext2 filesystem
*
* Copyright (C) 1993, 1994 Theodore Ts'o. This file may be redistributed
* under the terms of the GNU Public License.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <linux/ext2_fs.h>
#include "ext2fs.h"
void ext2fs_free(ext2_filsys fs)
{
if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
return;
if (fs->io) {
io_channel_close(fs->io);
}
if (fs->device_name)
free(fs->device_name);
if (fs->super)
free(fs->super);
if (fs->group_desc)
free(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);
free(fs);
}
void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap)
{
if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_GENERIC_BITMAP))
return;
bitmap->magic = 0;
if (bitmap->description) {
free(bitmap->description);
bitmap->description = 0;
}
if (bitmap->bitmap) {
free(bitmap->bitmap);
bitmap->bitmap = 0;
}
free(bitmap);
}
void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap)
{
if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_INODE_BITMAP))
return;
bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
ext2fs_free_generic_bitmap(bitmap);
}
void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap)
{
if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_BLOCK_BITMAP))
return;
bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
ext2fs_free_generic_bitmap(bitmap);
}
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