mirror of
git://sourceware.org/git/lvm2.git
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124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*
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* Copyright (C) 2014 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "lib.h"
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#include "filter.h"
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#ifdef UDEV_SYNC_SUPPORT
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#include <libudev.h>
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#include "dev-ext-udev-constants.h"
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#endif
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#ifdef __linux__
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#ifdef UDEV_SYNC_SUPPORT
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static int _udev_dev_is_fwraid(struct device *dev)
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{
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const char *value;
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value = udev_device_get_property_value((struct udev_device *)dev->ext.handle, DEV_EXT_UDEV_BLKID_TYPE);
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if (value && strcmp(value, DEV_EXT_UDEV_BLKID_TYPE_SW_RAID) && strstr(value, DEV_EXT_UDEV_BLKID_TYPE_RAID_SUFFIX))
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return 1;
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return 0;
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}
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#else
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static int _udev_dev_is_fwraid(struct device *dev)
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{
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return 0;
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}
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#endif
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static int _native_dev_is_fwraid(struct device *dev)
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{
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log_verbose("%s: Firmware RAID detection is not supported by LVM natively. "
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"Skipping firmware raid detection. ", dev_name(dev));
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return 0;
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}
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static int _dev_is_fwraid(struct device *dev)
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{
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if (dev->ext.src == DEV_EXT_NONE)
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return _native_dev_is_fwraid(dev);
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if (dev->ext.src == DEV_EXT_UDEV)
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return _udev_dev_is_fwraid(dev);
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log_error(INTERNAL_ERROR "Missing hook for firmware RAID recognition "
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"using external device info source %s", dev_ext_name(dev));
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return 0;
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}
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static int _ignore_fwraid(struct dev_filter *f __attribute__((unused)),
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struct device *dev)
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{
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int ret;
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if (!fwraid_filtering())
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return 1;
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ret = _dev_is_fwraid(dev);
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if (ret == 1) {
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log_debug_devs("%s: Skipping firmware RAID component device [%s:%p]",
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dev_name(dev), dev_ext_name(dev), dev->ext.handle);
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return 0;
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}
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if (ret < 0) {
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log_debug_devs("%s: Skipping: error in firmware RAID component detection",
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dev_name(dev));
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return 0;
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}
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return 1;
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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 firmware RAID filter while in use %u times.", f->use_count);
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dm_free(f);
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}
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struct dev_filter *fwraid_filter_create(struct dev_types *dt __attribute__((unused)))
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{
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struct dev_filter *f;
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if (!(f = dm_zalloc(sizeof(*f)))) {
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log_error("Firmware RAID filter allocation failed");
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return NULL;
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}
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f->passes_filter = _ignore_fwraid;
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f->destroy = _destroy;
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f->use_count = 0;
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f->private = NULL;
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log_debug_devs("Firmware RAID filter initialised.");
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return f;
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}
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#else
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struct dev_filter *fwraid_filter_create(struct dev_types *dt __attribute__((unused)))
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{
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return NULL;
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}
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#endif
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