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/*
* Copyright (C) 2004 Luca Berra
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "lib.h"
#include "filter-md.h"
#ifdef linux
static int _ignore_md(struct dev_filter *f __attribute__((unused)),
struct device *dev)
{
int ret;
if (!md_filtering())
return 1;
ret = dev_is_md(dev, NULL);
if (ret == 1) {
log_debug("%s: Skipping md component device", dev_name(dev));
return 0;
}
if (ret < 0) {
log_debug("%s: Skipping: error in md component detection",
dev_name(dev));
return 0;
}
return 1;
}
static void _destroy(struct dev_filter *f)
{
if (f->use_count)
log_error(INTERNAL_ERROR "Destroying md filter while in use %u times.", f->use_count);
dm_free(f);
}
struct dev_filter *md_filter_create(void)
{
struct dev_filter *f;
if (!(f = dm_malloc(sizeof(*f)))) {
log_error("md filter allocation failed");
return NULL;
}
f->passes_filter = _ignore_md;
f->destroy = _destroy;
f->use_count = 0;
f->private = NULL;
return f;
}
#else
struct dev_filter *md_filter_create(void)
{
return NULL;
}
#endif
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