Commit | Line | Data |
---|---|---|
51e5b2bd MA |
1 | /* |
2 | * Device Mapper Uevent Support (dm-uevent) | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | * | |
18 | * Copyright IBM Corporation, 2007 | |
19 | * Author: Mike Anderson <andmike@linux.vnet.ibm.com> | |
20 | */ | |
21 | #include <linux/list.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/kobject.h> | |
24 | ||
25 | #include "dm.h" | |
26 | #include "dm-uevent.h" | |
27 | ||
28 | #define DM_MSG_PREFIX "uevent" | |
29 | ||
30 | static struct kmem_cache *_dm_event_cache; | |
31 | ||
32 | struct dm_uevent { | |
33 | struct mapped_device *md; | |
34 | enum kobject_action action; | |
35 | struct kobj_uevent_env ku_env; | |
36 | struct list_head elist; | |
37 | }; | |
38 | ||
39 | static void dm_uevent_free(struct dm_uevent *event) | |
40 | { | |
41 | kmem_cache_free(_dm_event_cache, event); | |
42 | } | |
43 | ||
44 | static struct dm_uevent *dm_uevent_alloc(struct mapped_device *md) | |
45 | { | |
46 | struct dm_uevent *event; | |
47 | ||
48 | event = kmem_cache_zalloc(_dm_event_cache, GFP_ATOMIC); | |
49 | if (!event) | |
50 | return NULL; | |
51 | ||
52 | INIT_LIST_HEAD(&event->elist); | |
53 | event->md = md; | |
54 | ||
55 | return event; | |
56 | } | |
57 | ||
58 | int dm_uevent_init(void) | |
59 | { | |
60 | _dm_event_cache = KMEM_CACHE(dm_uevent, 0); | |
61 | if (!_dm_event_cache) | |
62 | return -ENOMEM; | |
63 | ||
64 | DMINFO("version 1.0.3"); | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | void dm_uevent_exit(void) | |
70 | { | |
71 | kmem_cache_destroy(_dm_event_cache); | |
72 | } |