2 * dupfs.c --- duplicate a ext2 filesystem handle
4 * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
23 errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest)
28 EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS);
30 retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
47 io_channel_bumpcount(fs->io);
49 fs->icache->refcount++;
51 retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name);
54 strcpy(fs->device_name, src->device_name);
56 retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);
59 memcpy(fs->super, src->super, SUPERBLOCK_SIZE);
61 retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
64 memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);
66 retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
70 memcpy(fs->group_desc, src->group_desc,
71 (size_t) fs->desc_blocks * fs->blocksize);
74 retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map);
79 retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map);
84 retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks);
89 retval = ext2fs_copy_dblist(src->dblist, &fs->dblist);
94 retval = ext2fs_get_mem(src->blocksize, &fs->mmp_buf);
97 memcpy(fs->mmp_buf, src->mmp_buf, src->blocksize);
99 if (src->mmp_fd >= 0) {
100 fs->mmp_fd = dup(src->mmp_fd);
101 if (fs->mmp_fd < 0) {
102 retval = EXT2_ET_MMP_OPEN_DIRECT;
107 int align = ext2fs_get_dio_alignment(src->mmp_fd);
109 retval = ext2fs_get_memalign(src->blocksize, align,
113 memcpy(fs->mmp_cmp, src->mmp_cmp, src->blocksize);