/*
* dupfs.c --- duplicate a ext2 filesystem handle
- *
- * Copyright (C) 1997 Theodore Ts'o.
+ *
+ * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o.
*
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#if HAVE_UNISTD_H
#include <unistd.h>
errcode_t retval;
EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
+
retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
if (retval)
return retval;
*fs = *src;
fs->device_name = 0;
fs->super = 0;
+ fs->orig_super = 0;
fs->group_desc = 0;
fs->inode_map = 0;
fs->block_map = 0;
fs->badblocks = 0;
fs->dblist = 0;
+ fs->mmp_buf = 0;
+ fs->mmp_cmp = 0;
+ fs->mmp_fd = -1;
io_channel_bumpcount(fs->io);
if (fs->icache)
goto errout;
memcpy(fs->super, src->super, SUPERBLOCK_SIZE);
- retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize,
+ retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
+ if (retval)
+ goto errout;
+ memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);
+
+ retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
&fs->group_desc);
if (retval)
goto errout;
if (retval)
goto errout;
}
+ if (src->mmp_buf) {
+ retval = ext2fs_get_mem(src->blocksize, &fs->mmp_buf);
+ if (retval)
+ goto errout;
+ memcpy(fs->mmp_buf, src->mmp_buf, src->blocksize);
+ }
+ if (src->mmp_fd >= 0) {
+ fs->mmp_fd = dup(src->mmp_fd);
+ if (fs->mmp_fd < 0) {
+ retval = EXT2_ET_MMP_OPEN_DIRECT;
+ goto errout;
+ }
+ }
+ if (src->mmp_cmp) {
+ int align = ext2fs_get_dio_alignment(src->mmp_fd);
+
+ retval = ext2fs_get_memalign(src->blocksize, align,
+ &fs->mmp_cmp);
+ if (retval)
+ goto errout;
+ memcpy(fs->mmp_cmp, src->mmp_cmp, src->blocksize);
+ }
*dest = fs;
return 0;
errout:
ext2fs_free(fs);
return retval;
-
+
}