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git://sourceware.org/git/lvm2.git
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83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
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* Copyright (C) 2006 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "base/memory/zalloc.h"
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#include "lib/misc/lib.h"
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#include "lib/filters/filter.h"
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static DM_LIST_INIT(_allow_devs);
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int internal_filter_allow(struct dm_pool *mem, struct device *dev)
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{
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struct device_list *devl;
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if (!(devl = dm_pool_alloc(mem, sizeof(*devl)))) {
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log_error("device_list element allocation failed");
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return 0;
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}
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devl->dev = dev;
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dm_list_add(&_allow_devs, &devl->list);
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return 1;
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}
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void internal_filter_clear(void)
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{
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dm_list_init(&_allow_devs);
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}
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static int _passes_internal(struct dev_filter *f __attribute__((unused)),
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struct device *dev)
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{
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struct device_list *devl;
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if (!internal_filtering())
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return 1;
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dm_list_iterate_items(devl, &_allow_devs) {
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if (devl->dev == dev)
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return 1;
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}
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log_debug_devs("%s: Skipping for internal filtering.", dev_name(dev));
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return 0;
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}
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static void _destroy(struct dev_filter *f)
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{
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if (f->use_count)
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log_error(INTERNAL_ERROR "Destroying internal filter while in use %u times.", f->use_count);
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free(f);
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}
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struct dev_filter *internal_filter_create(void)
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{
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struct dev_filter *f;
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if (!(f = zalloc(sizeof(*f)))) {
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log_error("md filter allocation failed");
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return NULL;
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}
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f->passes_filter = _passes_internal;
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f->destroy = _destroy;
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f->use_count = 0;
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log_debug_devs("Internal filter initialised.");
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return f;
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}
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