111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/**************************************************************************** 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** This header was automatically generated from a Linux kernel header 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** of the same name, to make information necessary for userspace to 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** call into the kernel available to libc. It contains only constants, 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** structures, and macros generated from the original header, and thus, 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** contains no copyrightable information. 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************/ 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef _LINUX_NOTIFIER_H 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _LINUX_NOTIFIER_H 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/errno.h> 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/mutex.h> 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/rwsem.h> 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct notifier_block { 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert int (*notifier_call)(struct notifier_block *, unsigned long, void *); 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct notifier_block *next; 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert int priority; 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct atomic_notifier_head { 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert spinlock_t lock; 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct notifier_block *head; 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct blocking_notifier_head { 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct rw_semaphore rwsem; 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct notifier_block *head; 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct raw_notifier_head { 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct notifier_block *head; 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define ATOMIC_INIT_NOTIFIER_HEAD(name) do { spin_lock_init(&(name)->lock); (name)->head = NULL; } while (0) 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define BLOCKING_INIT_NOTIFIER_HEAD(name) do { init_rwsem(&(name)->rwsem); (name)->head = NULL; } while (0) 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define RAW_INIT_NOTIFIER_HEAD(name) do { (name)->head = NULL; } while (0) 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define ATOMIC_NOTIFIER_INIT(name) { .lock = __SPIN_LOCK_UNLOCKED(name.lock), .head = NULL } 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define BLOCKING_NOTIFIER_INIT(name) { .rwsem = __RWSEM_INITIALIZER((name).rwsem), .head = NULL } 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define RAW_NOTIFIER_INIT(name) { .head = NULL } 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define ATOMIC_NOTIFIER_HEAD(name) struct atomic_notifier_head name = ATOMIC_NOTIFIER_INIT(name) 4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define BLOCKING_NOTIFIER_HEAD(name) struct blocking_notifier_head name = BLOCKING_NOTIFIER_INIT(name) 4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define RAW_NOTIFIER_HEAD(name) struct raw_notifier_head name = RAW_NOTIFIER_INIT(name) 4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 51