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-rw-r--r--drivers/connector/cn_proc.c26
-rw-r--r--include/linux/cn_proc.h11
-rw-r--r--kernel/sys.c1
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);

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