release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/md/dm-uevent.h

   1 /*
   2  * Device Mapper Uevent Support
   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 #ifndef DM_UEVENT_H
  22 #define DM_UEVENT_H
  23
  24 enum dm_uevent_type {
  25         DM_UEVENT_PATH_FAILED,
  26         DM_UEVENT_PATH_REINSTATED,
  27 };
  28
  29 #ifdef CONFIG_DM_UEVENT
  30
  31 extern int dm_uevent_init(void);
  32 extern void dm_uevent_exit(void);
  33 extern void dm_send_uevents(struct list_head *events, struct kobject *kobj);
  34 extern void dm_path_uevent(enum dm_uevent_type event_type,
  35                            struct dm_target *ti, const char *path,
  36                            unsigned nr_valid_paths);
  37
  38 #else
  39
  40 static inline int dm_uevent_init(void)
  41 {
  42         return 0;
  43 }
  44 static inline void dm_uevent_exit(void)
  45 {
  46 }
  47 static inline void dm_send_uevents(struct list_head *events,
  48                                    struct kobject *kobj)
  49 {
  50 }
  51 static inline void dm_path_uevent(enum dm_uevent_type event_type,
  52                                   struct dm_target *ti, const char *path,
  53                                   unsigned nr_valid_paths)
  54 {
  55 }
  56
  57 #endif  /* CONFIG_DM_UEVENT */
  58
  59 #endif  /* DM_UEVENT_H */