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lvm2/lib/filters/filter-type.c
David Teigland 450f272b31 devices: support printing the filter that rejects a device
Use of this new message function needs to be added
to various commands to improve the output.
2020-10-01 12:00:09 -05:00

65 lines
1.8 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2012 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "base/memory/zalloc.h"
#include "lib/misc/lib.h"
#include "lib/filters/filter.h"
static int _passes_lvm_type_device_filter(struct cmd_context *cmd, struct dev_filter *f, struct device *dev, const char *use_filter_name)
{
struct dev_types *dt = (struct dev_types *) f->private;
const char *name = dev_name(dev);
dev->filtered_flags &= ~DEV_FILTERED_DEVTYPE;
/* Is this a recognised device type? */
if (!dt->dev_type_array[MAJOR(dev->dev)].max_partitions) {
log_debug_devs("%s: Skipping: Unrecognised LVM device type %"
PRIu64, name, (uint64_t) MAJOR(dev->dev));
dev->filtered_flags |= DEV_FILTERED_DEVTYPE;
return 0;
}
return 1;
}
static void _lvm_type_filter_destroy(struct dev_filter *f)
{
if (f->use_count)
log_error(INTERNAL_ERROR "Destroying lvm_type filter while in use %u times.", f->use_count);
free(f);
}
struct dev_filter *lvm_type_filter_create(struct dev_types *dt)
{
struct dev_filter *f;
if (!(f = zalloc(sizeof(struct dev_filter)))) {
log_error("LVM type filter allocation failed");
return NULL;
}
f->passes_filter = _passes_lvm_type_device_filter;
f->destroy = _lvm_type_filter_destroy;
f->use_count = 0;
f->private = dt;
f->name = "type";
log_debug_devs("LVM type filter initialised.");
return f;
}