From 51e5b2bd34ded40ef48cade8a6a8f1baa0b4275e Mon Sep 17 00:00:00 2001 From: Mike Anderson Date: Fri, 19 Oct 2007 22:48:00 +0100 Subject: dm: add uevent to core This patch adds a uevent skeleton to device-mapper. Signed-off-by: Mike Anderson Signed-off-by: Alasdair G Kergon --- drivers/md/dm-uevent.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 drivers/md/dm-uevent.c (limited to 'drivers/md/dm-uevent.c') diff --git a/drivers/md/dm-uevent.c b/drivers/md/dm-uevent.c new file mode 100644 index 00000000000..53200c96bcb --- /dev/null +++ b/drivers/md/dm-uevent.c @@ -0,0 +1,72 @@ +/* + * Device Mapper Uevent Support (dm-uevent) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU 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. + * + * Copyright IBM Corporation, 2007 + * Author: Mike Anderson + */ +#include +#include +#include + +#include "dm.h" +#include "dm-uevent.h" + +#define DM_MSG_PREFIX "uevent" + +static struct kmem_cache *_dm_event_cache; + +struct dm_uevent { + struct mapped_device *md; + enum kobject_action action; + struct kobj_uevent_env ku_env; + struct list_head elist; +}; + +static void dm_uevent_free(struct dm_uevent *event) +{ + kmem_cache_free(_dm_event_cache, event); +} + +static struct dm_uevent *dm_uevent_alloc(struct mapped_device *md) +{ + struct dm_uevent *event; + + event = kmem_cache_zalloc(_dm_event_cache, GFP_ATOMIC); + if (!event) + return NULL; + + INIT_LIST_HEAD(&event->elist); + event->md = md; + + return event; +} + +int dm_uevent_init(void) +{ + _dm_event_cache = KMEM_CACHE(dm_uevent, 0); + if (!_dm_event_cache) + return -ENOMEM; + + DMINFO("version 1.0.3"); + + return 0; +} + +void dm_uevent_exit(void) +{ + kmem_cache_destroy(_dm_event_cache); +} -- cgit v1.2.3-18-g5258