auto import from //depot/cupcake/@135843

1 files changed, 50 insertions, 0 deletions

diff --git a/libc/kernel/common/linux/notifier.h b/libc/kernel/common/linux/notifier.h
new file mode 100644
index 0000000..f1fc461
--- /dev/null
+++ b/libc/kernel/common/linux/notifier.h
@@ -0,0 +1,50 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_NOTIFIER_H
+#define _LINUX_NOTIFIER_H
+#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/rwsem.h>
+
+struct notifier_block {
+ int (*notifier_call)(struct notifier_block *, unsigned long, void *);
+ struct notifier_block *next;
+ int priority;
+};
+
+struct atomic_notifier_head {
+ spinlock_t lock;
+ struct notifier_block *head;
+};
+
+struct blocking_notifier_head {
+ struct rw_semaphore rwsem;
+ struct notifier_block *head;
+};
+
+struct raw_notifier_head {
+ struct notifier_block *head;
+};
+
+#define ATOMIC_INIT_NOTIFIER_HEAD(name) do {   spin_lock_init(&(name)->lock);   (name)->head = NULL;   } while (0)
+#define BLOCKING_INIT_NOTIFIER_HEAD(name) do {   init_rwsem(&(name)->rwsem);   (name)->head = NULL;   } while (0)
+#define RAW_INIT_NOTIFIER_HEAD(name) do {   (name)->head = NULL;   } while (0)
+
+#define ATOMIC_NOTIFIER_INIT(name) {   .lock = __SPIN_LOCK_UNLOCKED(name.lock),   .head = NULL }
+#define BLOCKING_NOTIFIER_INIT(name) {   .rwsem = __RWSEM_INITIALIZER((name).rwsem),   .head = NULL }
+#define RAW_NOTIFIER_INIT(name) {   .head = NULL }
+
+#define ATOMIC_NOTIFIER_HEAD(name)   struct atomic_notifier_head name =   ATOMIC_NOTIFIER_INIT(name)
+#define BLOCKING_NOTIFIER_HEAD(name)   struct blocking_notifier_head name =   BLOCKING_NOTIFIER_INIT(name)
+#define RAW_NOTIFIER_HEAD(name)   struct raw_notifier_head name =   RAW_NOTIFIER_INIT(name)
+
+#endif