/* vi: set sw=4 ts=4: */ /* * 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 Public * License. * %End-Header% */ #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); } ext2fs_free_mem(&fs->device_name); ext2fs_free_mem(&fs->super); ext2fs_free_mem(&fs->orig_super); ext2fs_free_mem(&fs->group_desc); ext2fs_free_block_bitmap(fs->block_map); ext2fs_free_inode_bitmap(fs->inode_map); ext2fs_badblocks_list_free(fs->badblocks); fs->badblocks = 0; ext2fs_free_dblist(fs->dblist); if (fs->icache) ext2fs_free_inode_cache(fs->icache); fs->magic = 0; ext2fs_free_mem(&fs); } void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap) { if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_GENERIC_BITMAP)) return; bitmap->magic = 0; ext2fs_free_mem(&bitmap->description); ext2fs_free_mem(&bitmap->bitmap); ext2fs_free_mem(&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); } /* * Free the inode cache structure */ static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache) { if (--icache->refcount) return; ext2fs_free_mem(&icache->buffer); 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 || bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST) return; ext2fs_free_mem(&bb->list); 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; ext2fs_free_mem(&dblist->list); if (dblist->fs && dblist->fs->dblist == dblist) dblist->fs->dblist = 0; dblist->magic = 0; ext2fs_free_mem(&dblist); }