1997-04-26 17:21:57 +04:00
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/*
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* freefs.c --- free an ext2 filesystem
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2008-08-28 07:07:54 +04:00
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*
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1997-04-29 20:17:09 +04:00
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* Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
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*
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* %Begin-Header%
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2010-05-18 05:31:56 +04:00
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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1997-04-29 20:17:09 +04:00
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* %End-Header%
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1997-04-26 17:21:57 +04:00
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*/
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2011-09-19 01:34:37 +04:00
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#include "config.h"
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1997-04-26 17:21:57 +04:00
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#include <stdio.h>
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1997-08-11 03:07:40 +04:00
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#if HAVE_UNISTD_H
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1997-04-26 17:21:57 +04:00
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#include <unistd.h>
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1997-08-11 03:07:40 +04:00
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#endif
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1997-04-26 17:21:57 +04:00
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Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
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#include "ext2_fs.h"
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1997-04-30 01:26:48 +04:00
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#include "ext2fsP.h"
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static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
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1997-04-26 17:21:57 +04:00
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void ext2fs_free(ext2_filsys fs)
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{
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1997-04-26 17:34:30 +04:00
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if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
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1997-04-26 17:21:57 +04:00
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return;
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2004-07-29 05:11:48 +04:00
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if (fs->image_io != fs->io) {
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2004-11-30 22:07:11 +03:00
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if (fs->image_io)
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io_channel_close(fs->image_io);
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2004-07-29 05:11:48 +04:00
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}
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1997-04-26 17:21:57 +04:00
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if (fs->io) {
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io_channel_close(fs->io);
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}
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if (fs->device_name)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->device_name);
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1997-04-26 17:21:57 +04:00
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if (fs->super)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->super);
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2000-10-27 00:24:43 +04:00
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if (fs->orig_super)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->orig_super);
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1997-04-26 17:21:57 +04:00
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if (fs->group_desc)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->group_desc);
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1997-04-26 17:21:57 +04:00
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if (fs->block_map)
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1997-04-26 17:58:21 +04:00
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ext2fs_free_block_bitmap(fs->block_map);
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1997-04-26 17:21:57 +04:00
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if (fs->inode_map)
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1997-04-26 17:58:21 +04:00
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ext2fs_free_inode_bitmap(fs->inode_map);
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1997-04-29 20:17:09 +04:00
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if (fs->badblocks)
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1999-11-09 01:05:04 +03:00
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ext2fs_badblocks_list_free(fs->badblocks);
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1997-04-29 20:17:09 +04:00
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fs->badblocks = 0;
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if (fs->dblist)
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ext2fs_free_dblist(fs->dblist);
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1997-04-30 01:26:48 +04:00
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if (fs->icache)
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ext2fs_free_inode_cache(fs->icache);
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2008-08-28 07:07:54 +04:00
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2011-09-24 21:48:55 +04:00
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if (fs->mmp_buf)
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ext2fs_free_mem(&fs->mmp_buf);
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if (fs->mmp_cmp)
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ext2fs_free_mem(&fs->mmp_cmp);
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1997-04-29 20:17:09 +04:00
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fs->magic = 0;
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs);
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1997-04-26 17:21:57 +04:00
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}
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1997-04-30 01:26:48 +04:00
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/*
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* Free the inode cache structure
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*/
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static void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
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{
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if (--icache->refcount)
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return;
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if (icache->buffer)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&icache->buffer);
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1997-04-30 01:26:48 +04:00
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if (icache->cache)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&icache->cache);
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1997-04-30 01:26:48 +04:00
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icache->buffer_blk = 0;
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&icache);
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1997-04-30 01:26:48 +04:00
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}
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/*
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* This procedure frees a badblocks list.
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*/
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2002-07-20 08:28:07 +04:00
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void ext2fs_u32_list_free(ext2_u32_list bb)
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1997-04-30 01:26:48 +04:00
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{
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if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
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return;
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if (bb->list)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&bb->list);
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1997-04-30 01:26:48 +04:00
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bb->list = 0;
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&bb);
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1997-04-30 01:26:48 +04:00
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}
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2002-07-20 08:28:07 +04:00
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void ext2fs_badblocks_list_free(ext2_badblocks_list bb)
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{
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ext2fs_u32_list_free((ext2_u32_list) bb);
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}
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1997-04-30 01:26:48 +04:00
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/*
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* Free a directory block list
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*/
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void ext2fs_free_dblist(ext2_dblist dblist)
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{
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if (!dblist || (dblist->magic != EXT2_ET_MAGIC_DBLIST))
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return;
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if (dblist->list)
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&dblist->list);
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1997-04-30 01:26:48 +04:00
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dblist->list = 0;
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if (dblist->fs && dblist->fs->dblist == dblist)
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dblist->fs->dblist = 0;
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dblist->magic = 0;
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&dblist);
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1997-04-30 01:26:48 +04:00
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}
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