| /* |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "lib.h" |
| #include "filter.h" |
| |
| #ifdef __linux__ |
| |
| #define MSG_SKIPPING "%s: Skipping md component device" |
| |
| 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) { |
| if (dev->ext.src == DEV_EXT_NONE) |
| log_debug_devs(MSG_SKIPPING, dev_name(dev)); |
| else |
| log_debug_devs(MSG_SKIPPING " [%s:%p]", dev_name(dev), |
| dev_ext_name(dev), dev->ext.handle); |
| return 0; |
| } |
| |
| if (ret < 0) { |
| log_debug_devs("%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(struct dev_types *dt) |
| { |
| struct dev_filter *f; |
| |
| if (!(f = dm_zalloc(sizeof(*f)))) { |
| log_error("md filter allocation failed"); |
| return NULL; |
| } |
| |
| f->passes_filter = _ignore_md; |
| f->destroy = _destroy; |
| f->use_count = 0; |
| f->private = dt; |
| |
| log_debug_devs("MD filter initialised."); |
| |
| return f; |
| } |
| |
| #else |
| |
| struct dev_filter *md_filter_create(struct dev_types *dt) |
| { |
| return NULL; |
| } |
| |
| #endif |