[Devel] [PATCH RH9 08/26] proc connector: use generic event helper for fork event

[Pavel Tikhomirov]

From: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>

Signed-off-by: Stanislav Kinsburskiy <skinsbursky at virtuozzo.com>
Reviewed-by: Andrey Ryabinin <aryabinin at virtuozzo.com>

(cherry picked from vz8 commit 9feb0939ead47a81980788f8b09bce7451fe1a98)
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 drivers/connector/cn_proc.c | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 0adf4a60283f..5393e9891f43 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -111,23 +111,11 @@ static void proc_event_connector(struct task_struct *task,
 	send_msg(msg);
 }
 
-void proc_fork_connector(struct task_struct *task)
+static bool fill_fork_event(struct proc_event *ev, struct task_struct *task,
+		int unused)
 {
-	struct cn_msg *msg;
-	struct proc_event *ev;
-	__u8 buffer[CN_PROC_MSG_SIZE] __aligned(8);
 	struct task_struct *parent;
 
-	(void) proc_event_connector;
-
-	if (atomic_read(&proc_event_num_listeners) < 1)
-		return;
-
-	msg = buffer_to_cn_msg(buffer);
-	ev = (struct proc_event *)msg->data;
-	memset(&ev->event_data, 0, sizeof(ev->event_data));
-	ev->timestamp_ns = ktime_get_ns();
-	ev->what = PROC_EVENT_FORK;
 	rcu_read_lock();
 	parent = rcu_dereference(task->real_parent);
 	ev->event_data.fork.parent_pid = parent->pid;
@@ -135,12 +123,12 @@ void proc_fork_connector(struct task_struct *task)
 	rcu_read_unlock();
 	ev->event_data.fork.child_pid = task->pid;
 	ev->event_data.fork.child_tgid = task->tgid;
+	return true;
+}
 
-	memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id));
-	msg->ack = 0; /* not used */
-	msg->len = sizeof(*ev);
-	msg->flags = 0; /* not used */
-	send_msg(msg);
+void proc_fork_connector(struct task_struct *task)
+{
+	proc_event_connector(task, PROC_EVENT_FORK, 0, fill_fork_event);
 }
 
 void proc_exec_connector(struct task_struct *task)
-- 
2.31.1