1 /* vi: set sw=4 ts=4: */
3 * freefs.c --- free an ext2 filesystem
5 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
8 * This file may be redistributed under the terms of the GNU Public
21 static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
23 void ext2fs_free(ext2_filsys fs)
25 if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
27 if (fs->image_io != fs->io) {
29 io_channel_close(fs->image_io);
32 io_channel_close(fs->io);
34 ext2fs_free_mem(&fs->device_name);
35 ext2fs_free_mem(&fs->super);
36 ext2fs_free_mem(&fs->orig_super);
37 ext2fs_free_mem(&fs->group_desc);
38 ext2fs_free_block_bitmap(fs->block_map);
39 ext2fs_free_inode_bitmap(fs->inode_map);
41 ext2fs_badblocks_list_free(fs->badblocks);
44 ext2fs_free_dblist(fs->dblist);
47 ext2fs_free_inode_cache(fs->icache);
54 void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap)
56 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_GENERIC_BITMAP))
60 ext2fs_free_mem(&bitmap->description);
61 ext2fs_free_mem(&bitmap->bitmap);
62 ext2fs_free_mem(&bitmap);
65 void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap)
67 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_INODE_BITMAP))
70 bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
71 ext2fs_free_generic_bitmap(bitmap);
74 void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap)
76 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_BLOCK_BITMAP))
79 bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
80 ext2fs_free_generic_bitmap(bitmap);
84 * Free the inode cache structure
86 static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
88 if (--icache->refcount)
90 ext2fs_free_mem(&icache->buffer);
91 ext2fs_free_mem(&icache->cache);
92 icache->buffer_blk = 0;
93 ext2fs_free_mem(&icache);
97 * This procedure frees a badblocks list.
99 void ext2fs_u32_list_free(ext2_u32_list bb)
101 if (!bb || bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
104 ext2fs_free_mem(&bb->list);
105 ext2fs_free_mem(&bb);
108 void ext2fs_badblocks_list_free(ext2_badblocks_list bb)
110 ext2fs_u32_list_free((ext2_u32_list) bb);
115 * Free a directory block list
117 void ext2fs_free_dblist(ext2_dblist dblist)
119 if (!dblist || (dblist->magic != EXT2_ET_MAGIC_DBLIST))
122 ext2fs_free_mem(&dblist->list);
123 if (dblist->fs && dblist->fs->dblist == dblist)
124 dblist->fs->dblist = 0;
126 ext2fs_free_mem(&dblist);