1/*	$NetBSD: filter-md.c,v 1.1.1.1 2008/12/22 00:17:58 haad Exp $	*/
2
3/*
4 * Copyright (C) 2004 Luca Berra
5 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#include "lib.h"
19#include "filter-md.h"
20#include "metadata.h"
21
22#ifdef linux
23
24static int _ignore_md(struct dev_filter *f __attribute((unused)),
25		      struct device *dev)
26{
27	int ret;
28
29	if (!md_filtering())
30		return 1;
31
32	ret = dev_is_md(dev, NULL);
33
34	if (ret == 1) {
35		log_debug("%s: Skipping md component device", dev_name(dev));
36		return 0;
37	}
38
39	if (ret < 0) {
40		log_debug("%s: Skipping: error in md component detection",
41			  dev_name(dev));
42		return 0;
43	}
44
45	return 1;
46}
47
48static void _destroy(struct dev_filter *f)
49{
50	dm_free(f);
51}
52
53struct dev_filter *md_filter_create(void)
54{
55	struct dev_filter *f;
56
57	if (!(f = dm_malloc(sizeof(*f)))) {
58		log_error("md filter allocation failed");
59		return NULL;
60	}
61
62	f->passes_filter = _ignore_md;
63	f->destroy = _destroy;
64	f->private = NULL;
65
66	return f;
67}
68
69#else
70
71struct dev_filter *md_filter_create(void)
72{
73	return NULL;
74}
75
76#endif
77