source: MondoRescue/branches/stable/mindi-busybox/e2fsprogs/ext2fs/dupfs.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 13 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 2.0 KB
Line 
1/*
2 * dupfs.c --- duplicate a ext2 filesystem handle
3 *
4 * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12#include <stdio.h>
13#if HAVE_UNISTD_H
14#include <unistd.h>
15#endif
16#include <time.h>
17#include <string.h>
18
19#include "ext2_fs.h"
20#include "ext2fsP.h"
21
22errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest)
23{
24    ext2_filsys fs;
25    errcode_t   retval;
26
27    EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS);
28
29    retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
30    if (retval)
31        return retval;
32
33    *fs = *src;
34    fs->device_name = 0;
35    fs->super = 0;
36    fs->orig_super = 0;
37    fs->group_desc = 0;
38    fs->inode_map = 0;
39    fs->block_map = 0;
40    fs->badblocks = 0;
41    fs->dblist = 0;
42
43    io_channel_bumpcount(fs->io);
44    if (fs->icache)
45        fs->icache->refcount++;
46
47    retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name);
48    if (retval)
49        goto errout;
50    strcpy(fs->device_name, src->device_name);
51
52    retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);
53    if (retval)
54        goto errout;
55    memcpy(fs->super, src->super, SUPERBLOCK_SIZE);
56
57    retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
58    if (retval)
59        goto errout;
60    memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);
61
62    retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize,
63                &fs->group_desc);
64    if (retval)
65        goto errout;
66    memcpy(fs->group_desc, src->group_desc,
67           (size_t) fs->desc_blocks * fs->blocksize);
68
69    if (src->inode_map) {
70        retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map);
71        if (retval)
72            goto errout;
73    }
74    if (src->block_map) {
75        retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map);
76        if (retval)
77            goto errout;
78    }
79    if (src->badblocks) {
80        retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks);
81        if (retval)
82            goto errout;
83    }
84    if (src->dblist) {
85        retval = ext2fs_copy_dblist(src->dblist, &fs->dblist);
86        if (retval)
87            goto errout;
88    }
89    *dest = fs;
90    return 0;
91errout:
92    ext2fs_free(fs);
93    return retval;
94
95}
96
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