include/linux/user-return-notifier.h

Source file repositories/reference/linux-study-clean/include/linux/user-return-notifier.h

File Facts

System
Linux kernel
Corpus path
include/linux/user-return-notifier.h
Extension
.h
Size
1205 bytes
Lines
51
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct user_return_notifier {
	void (*on_user_return)(struct user_return_notifier *urn);
	struct hlist_node link;
};


void user_return_notifier_register(struct user_return_notifier *urn);
void user_return_notifier_unregister(struct user_return_notifier *urn);

static inline void propagate_user_return_notify(struct task_struct *prev,
						struct task_struct *next)
{
	if (test_tsk_thread_flag(prev, TIF_USER_RETURN_NOTIFY)) {
		clear_tsk_thread_flag(prev, TIF_USER_RETURN_NOTIFY);
		set_tsk_thread_flag(next, TIF_USER_RETURN_NOTIFY);
	}
}

void fire_user_return_notifiers(void);

static inline void clear_user_return_notifier(struct task_struct *p)
{
	clear_tsk_thread_flag(p, TIF_USER_RETURN_NOTIFY);
}

#else

struct user_return_notifier {};

static inline void propagate_user_return_notify(struct task_struct *prev,
						struct task_struct *next)
{
}

static inline void fire_user_return_notifiers(void) {}

static inline void clear_user_return_notifier(struct task_struct *p) {}

#endif

#endif

Annotation

Implementation Notes