2  * dupfs.c --- duplicate a ext2 filesystem handle
6  * %Begin-Header%
9  * %End-Header%
25 	ext2_filsys	fs;  in ext2fs_dup_handle()  local
30 	retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);  in ext2fs_dup_handle()
34 	*fs = *src;  in ext2fs_dup_handle()
35 	fs->device_name = 0;  in ext2fs_dup_handle()
36 	fs->super = 0;  in ext2fs_dup_handle()
37 	fs->orig_super = 0;  in ext2fs_dup_handle()
38 	fs->group_desc = 0;  in ext2fs_dup_handle()
39 	fs->inode_map = 0;  in ext2fs_dup_handle()
40 	fs->block_map = 0;  in ext2fs_dup_handle()
41 	fs->badblocks = 0;  in ext2fs_dup_handle()
42 	fs->dblist = 0;  in ext2fs_dup_handle()
43 	fs->mmp_buf = 0;  in ext2fs_dup_handle()
44 	fs->mmp_cmp = 0;  in ext2fs_dup_handle()
45 	fs->mmp_fd = -1;  in ext2fs_dup_handle()
47 	io_channel_bumpcount(fs->io);  in ext2fs_dup_handle()
48 	if (fs->icache)  in ext2fs_dup_handle()
49 		fs->icache->refcount++;  in ext2fs_dup_handle()
51 	retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name);  in ext2fs_dup_handle()
54 	strcpy(fs->device_name, src->device_name);  in ext2fs_dup_handle()
56 	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);  in ext2fs_dup_handle()
59 	memcpy(fs->super, src->super, SUPERBLOCK_SIZE);  in ext2fs_dup_handle()
61 	retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);  in ext2fs_dup_handle()
64 	memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);  in ext2fs_dup_handle()
66 	retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,  in ext2fs_dup_handle()
67 				&fs->group_desc);  in ext2fs_dup_handle()
70 	memcpy(fs->group_desc, src->group_desc,  in ext2fs_dup_handle()
71 	       (size_t) fs->desc_blocks * fs->blocksize);  in ext2fs_dup_handle()
73 	if (src->inode_map) {  in ext2fs_dup_handle()
74 		retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map);  in ext2fs_dup_handle()
78 	if (src->block_map) {  in ext2fs_dup_handle()
79 		retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map);  in ext2fs_dup_handle()
83 	if (src->badblocks) {  in ext2fs_dup_handle()
84 		retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks);  in ext2fs_dup_handle()
88 	if (src->dblist) {  in ext2fs_dup_handle()
89 		retval = ext2fs_copy_dblist(src->dblist, &fs->dblist);  in ext2fs_dup_handle()
93 	if (src->mmp_buf) {  in ext2fs_dup_handle()
94 		retval = ext2fs_get_mem(src->blocksize, &fs->mmp_buf);  in ext2fs_dup_handle()
97 		memcpy(fs->mmp_buf, src->mmp_buf, src->blocksize);  in ext2fs_dup_handle()
99 	if (src->mmp_fd >= 0) {  in ext2fs_dup_handle()
100 		fs->mmp_fd = dup(src->mmp_fd);  in ext2fs_dup_handle()
101 		if (fs->mmp_fd < 0) {  in ext2fs_dup_handle()
106 	if (src->mmp_cmp) {  in ext2fs_dup_handle()
107 		int align = ext2fs_get_dio_alignment(src->mmp_fd);  in ext2fs_dup_handle()
109 		retval = ext2fs_get_memalign(src->blocksize, align,  in ext2fs_dup_handle()
110 					     &fs->mmp_cmp);  in ext2fs_dup_handle()
113 		memcpy(fs->mmp_cmp, src->mmp_cmp, src->blocksize);  in ext2fs_dup_handle()
115 	*dest = fs;  in ext2fs_dup_handle()
118 	ext2fs_free(fs);  in ext2fs_dup_handle()