diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/md/dm-uevent.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/md/dm-uevent.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/ANDROID_3.4.5/drivers/md/dm-uevent.c b/ANDROID_3.4.5/drivers/md/dm-uevent.c deleted file mode 100644 index 8efe033b..00000000 --- a/ANDROID_3.4.5/drivers/md/dm-uevent.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * 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 <andmike@linux.vnet.ibm.com> - */ -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/kobject.h> -#include <linux/dm-ioctl.h> -#include <linux/export.h> - -#include "dm.h" -#include "dm-uevent.h" - -#define DM_MSG_PREFIX "uevent" - -static const struct { - enum dm_uevent_type type; - enum kobject_action action; - char *name; -} _dm_uevent_type_names[] = { - {DM_UEVENT_PATH_FAILED, KOBJ_CHANGE, "PATH_FAILED"}, - {DM_UEVENT_PATH_REINSTATED, KOBJ_CHANGE, "PATH_REINSTATED"}, -}; - -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; - char name[DM_NAME_LEN]; - char uuid[DM_UUID_LEN]; -}; - -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; -} - -static struct dm_uevent *dm_build_path_uevent(struct mapped_device *md, - struct dm_target *ti, - enum kobject_action action, - const char *dm_action, - const char *path, - unsigned nr_valid_paths) -{ - struct dm_uevent *event; - - event = dm_uevent_alloc(md); - if (!event) { - DMERR("%s: dm_uevent_alloc() failed", __func__); - goto err_nomem; - } - - event->action = action; - - if (add_uevent_var(&event->ku_env, "DM_TARGET=%s", ti->type->name)) { - DMERR("%s: add_uevent_var() for DM_TARGET failed", - __func__); - goto err_add; - } - - if (add_uevent_var(&event->ku_env, "DM_ACTION=%s", dm_action)) { - DMERR("%s: add_uevent_var() for DM_ACTION failed", - __func__); - goto err_add; - } - - if (add_uevent_var(&event->ku_env, "DM_SEQNUM=%u", - dm_next_uevent_seq(md))) { - DMERR("%s: add_uevent_var() for DM_SEQNUM failed", - __func__); - goto err_add; - } - - if (add_uevent_var(&event->ku_env, "DM_PATH=%s", path)) { - DMERR("%s: add_uevent_var() for DM_PATH failed", __func__); - goto err_add; - } - - if (add_uevent_var(&event->ku_env, "DM_NR_VALID_PATHS=%d", - nr_valid_paths)) { - DMERR("%s: add_uevent_var() for DM_NR_VALID_PATHS failed", - __func__); - goto err_add; - } - - return event; - -err_add: - dm_uevent_free(event); -err_nomem: - return ERR_PTR(-ENOMEM); -} - -/** - * dm_send_uevents - send uevents for given list - * - * @events: list of events to send - * @kobj: kobject generating event - * - */ -void dm_send_uevents(struct list_head *events, struct kobject *kobj) -{ - int r; - struct dm_uevent *event, *next; - - list_for_each_entry_safe(event, next, events, elist) { - list_del_init(&event->elist); - - /* - * When a device is being removed this copy fails and we - * discard these unsent events. - */ - if (dm_copy_name_and_uuid(event->md, event->name, - event->uuid)) { - DMINFO("%s: skipping sending uevent for lost device", - __func__); - goto uevent_free; - } - - if (add_uevent_var(&event->ku_env, "DM_NAME=%s", event->name)) { - DMERR("%s: add_uevent_var() for DM_NAME failed", - __func__); - goto uevent_free; - } - - if (add_uevent_var(&event->ku_env, "DM_UUID=%s", event->uuid)) { - DMERR("%s: add_uevent_var() for DM_UUID failed", - __func__); - goto uevent_free; - } - - r = kobject_uevent_env(kobj, event->action, event->ku_env.envp); - if (r) - DMERR("%s: kobject_uevent_env failed", __func__); -uevent_free: - dm_uevent_free(event); - } -} -EXPORT_SYMBOL_GPL(dm_send_uevents); - -/** - * dm_path_uevent - called to create a new path event and queue it - * - * @event_type: path event type enum - * @ti: pointer to a dm_target - * @path: string containing pathname - * @nr_valid_paths: number of valid paths remaining - * - */ -void dm_path_uevent(enum dm_uevent_type event_type, struct dm_target *ti, - const char *path, unsigned nr_valid_paths) -{ - struct mapped_device *md = dm_table_get_md(ti->table); - struct dm_uevent *event; - - if (event_type >= ARRAY_SIZE(_dm_uevent_type_names)) { - DMERR("%s: Invalid event_type %d", __func__, event_type); - return; - } - - event = dm_build_path_uevent(md, ti, - _dm_uevent_type_names[event_type].action, - _dm_uevent_type_names[event_type].name, - path, nr_valid_paths); - if (IS_ERR(event)) - return; - - dm_uevent_add(md, &event->elist); -} -EXPORT_SYMBOL_GPL(dm_path_uevent); - -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); -} |