3 files changed, 38 insertions, 0 deletions

diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index e55814bc0d06..77e1e6cd66ce 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -205,6 +205,32 @@ void proc_ptrace_connector(struct task_struct *task, int ptrace_id)
         cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL);
 }
 
+void proc_comm_connector(struct task_struct *task)
+{
+        struct cn_msg *msg;
+        struct proc_event *ev;
+        struct timespec ts;
+        __u8 buffer[CN_PROC_MSG_SIZE];
+
+        if (atomic_read(&proc_event_num_listeners) < 1)
+                return;
+
+        msg = (struct cn_msg *)buffer;
+        ev = (struct proc_event *)msg->data;
+        get_seq(&msg->seq, &ev->cpu);
+        ktime_get_ts(&ts); /* get high res monotonic timestamp */
+        put_unaligned(timespec_to_ns(&ts), (__u64 *)&ev->timestamp_ns);
+        ev->what = PROC_EVENT_COMM;
+        ev->event_data.comm.process_pid  = task->pid;
+        ev->event_data.comm.process_tgid = task->tgid;
+        get_task_comm(ev->event_data.comm.comm, task);
+
+        memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id));
+        msg->ack = 0; /* not used */
+        msg->len = sizeof(*ev);
+        cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL);
+}
+
 void proc_exit_connector(struct task_struct *task)
 {
         struct cn_msg *msg;
diff --git a/include/linux/cn_proc.h b/include/linux/cn_proc.h
index 12c517b51ca2..d03612b196e1 100644
--- a/include/linux/cn_proc.h
+++ b/include/linux/cn_proc.h
@@ -54,6 +54,7 @@ struct proc_event {
                 PROC_EVENT_GID  = 0x00000040,
                 PROC_EVENT_SID  = 0x00000080,
                 PROC_EVENT_PTRACE = 0x00000100,
+                PROC_EVENT_COMM = 0x00000200,
                 /* "next" should be 0x00000400 */
                 /* "last" is the last process event: exit */
                 PROC_EVENT_EXIT = 0x80000000
@@ -103,6 +104,12 @@ struct proc_event {
                         __kernel_pid_t tracer_tgid;
                 } ptrace;
 
+                struct comm_proc_event {
+                        __kernel_pid_t process_pid;
+                        __kernel_pid_t process_tgid;
+                        char           comm[16];
+                } comm;
+
                 struct exit_proc_event {
                         __kernel_pid_t process_pid;
                         __kernel_pid_t process_tgid;
@@ -118,6 +125,7 @@ void proc_exec_connector(struct task_struct *task);
 void proc_id_connector(struct task_struct *task, int which_id);
 void proc_sid_connector(struct task_struct *task);
 void proc_ptrace_connector(struct task_struct *task, int which_id);
+void proc_comm_connector(struct task_struct *task);
 void proc_exit_connector(struct task_struct *task);
 #else
 static inline void proc_fork_connector(struct task_struct *task)
@@ -133,6 +141,9 @@ static inline void proc_id_connector(struct task_struct *task,
 static inline void proc_sid_connector(struct task_struct *task)
 {}
 
+static inline void proc_comm_connector(struct task_struct *task)
+{}
+
 static inline void proc_ptrace_connector(struct task_struct *task,
                                          int ptrace_id)
 {}
diff --git a/kernel/sys.c b/kernel/sys.c
index 18ee1d2f6474..b3dfb76f8073 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1759,6 +1759,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
                                               sizeof(me->comm) - 1) < 0)
                                 return -EFAULT;
                         set_task_comm(me, comm);
+                        proc_comm_connector(me);
                         return 0;
                 case PR_GET_NAME:
                         get_task_comm(comm, me);