2 * freefs.c --- free an ext2 filesystem
4 * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
20 static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
22 void ext2fs_free(ext2_filsys fs)
24 if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
26 if (fs->image_io != fs->io) {
28 io_channel_close(fs->image_io);
31 io_channel_close(fs->io);
34 ext2fs_free_mem(&fs->device_name);
36 ext2fs_free_mem(&fs->super);
38 ext2fs_free_mem(&fs->orig_super);
40 ext2fs_free_mem(&fs->group_desc);
42 ext2fs_free_block_bitmap(fs->block_map);
44 ext2fs_free_inode_bitmap(fs->inode_map);
47 ext2fs_badblocks_list_free(fs->badblocks);
51 ext2fs_free_dblist(fs->dblist);
54 ext2fs_free_inode_cache(fs->icache);
61 void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap)
63 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_GENERIC_BITMAP))
67 if (bitmap->description) {
68 ext2fs_free_mem(&bitmap->description);
69 bitmap->description = 0;
72 ext2fs_free_mem(&bitmap->bitmap);
75 ext2fs_free_mem(&bitmap);
78 void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap)
80 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_INODE_BITMAP))
83 bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
84 ext2fs_free_generic_bitmap(bitmap);
87 void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap)
89 if (!bitmap || (bitmap->magic != EXT2_ET_MAGIC_BLOCK_BITMAP))
92 bitmap->magic = EXT2_ET_MAGIC_GENERIC_BITMAP;
93 ext2fs_free_generic_bitmap(bitmap);
97 * Free the inode cache structure
99 static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
101 if (--icache->refcount)
104 ext2fs_free_mem(&icache->buffer);
106 ext2fs_free_mem(&icache->cache);
107 icache->buffer_blk = 0;
108 ext2fs_free_mem(&icache);
112 * This procedure frees a badblocks list.
114 void ext2fs_u32_list_free(ext2_u32_list bb)
116 if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
120 ext2fs_free_mem(&bb->list);
122 ext2fs_free_mem(&bb);
125 void ext2fs_badblocks_list_free(ext2_badblocks_list bb)
127 ext2fs_u32_list_free((ext2_u32_list) bb);
132 * Free a directory block list
134 void ext2fs_free_dblist(ext2_dblist dblist)
136 if (!dblist || (dblist->magic != EXT2_ET_MAGIC_DBLIST))
140 ext2fs_free_mem(&dblist->list);
142 if (dblist->fs && dblist->fs->dblist == dblist)
143 dblist->fs->dblist = 0;
145 ext2fs_free_mem(&dblist);