include/linux/kobject_uevent.h

   1 /*
   2  * kobject_uevent.h - list of kobject user events that can be generated
   3  *
   4  * Copyright (C) 2004 IBM Corp.
   5  * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
   6  *
   7  * This file is released under the GPLv2.
   8  *
   9  */
  10
  11 #ifndef _KOBJECT_EVENT_H_
  12 #define _KOBJECT_EVENT_H_
  13
  14 #define HOTPLUG_PATH_LEN        256
  15
  16 /* path to the hotplug userspace helper executed on an event */
  17 extern char hotplug_path[];
  18
  19 /*
  20  * If you add an action here, you must also add the proper string to the
  21  * lib/kobject_uevent.c file.
  22  */
  23 typedef int __bitwise kobject_action_t;
  24 enum kobject_action {
  25         KOBJ_ADD        = (__force kobject_action_t) 0x01,      /* add event, for hotplug */
  26         KOBJ_REMOVE     = (__force kobject_action_t) 0x02,      /* remove event, for hotplug */
  27         KOBJ_CHANGE     = (__force kobject_action_t) 0x03,      /* a sysfs attribute file has changed */
  28         KOBJ_MOUNT      = (__force kobject_action_t) 0x04,      /* mount event for block devices */
  29         KOBJ_UMOUNT     = (__force kobject_action_t) 0x05,      /* umount event for block devices */
  30         KOBJ_OFFLINE    = (__force kobject_action_t) 0x06,      /* offline event for hotplug devices */
  31         KOBJ_ONLINE     = (__force kobject_action_t) 0x07,      /* online event for hotplug devices */
  32 };
  33
  34
  35 #ifdef CONFIG_KOBJECT_UEVENT
  36 int kobject_uevent(struct kobject *kobj,
  37                    enum kobject_action action,
  38                    struct attribute *attr);
  39 int kobject_uevent_atomic(struct kobject *kobj,
  40                           enum kobject_action action,
  41                           struct attribute *attr);
  42 #else
  43 static inline int kobject_uevent(struct kobject *kobj,
  44                                  enum kobject_action action,
  45                                  struct attribute *attr)
  46 {
  47         return 0;
  48 }
  49 static inline int kobject_uevent_atomic(struct kobject *kobj,
  50                                         enum kobject_action action,
  51                                         struct attribute *attr)
  52 {
  53         return 0;
  54 }
  55 #endif
  56
  57 #endif