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path: root/drivers/connector/cn_proc.c
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Diffstat (limited to 'drivers/connector/cn_proc.c')
-rw-r--r--drivers/connector/cn_proc.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 2b46a7efa0ac..281902d3f7ec 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -28,6 +28,7 @@
#include <linux/init.h>
#include <linux/connector.h>
#include <linux/gfp.h>
+#include <linux/ptrace.h>
#include <asm/atomic.h>
#include <asm/unaligned.h>
@@ -166,6 +167,40 @@ void proc_sid_connector(struct task_struct *task)
cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL);
}
+void proc_ptrace_connector(struct task_struct *task, int ptrace_id)
+{
+ struct cn_msg *msg;
+ struct proc_event *ev;
+ struct timespec ts;
+ __u8 buffer[CN_PROC_MSG_SIZE];
+ struct task_struct *tracer;
+
+ 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_PTRACE;
+ ev->event_data.ptrace.process_pid = task->pid;
+ ev->event_data.ptrace.process_tgid = task->tgid;
+ if (ptrace_id == PTRACE_ATTACH) {
+ ev->event_data.ptrace.tracer_pid = current->pid;
+ ev->event_data.ptrace.tracer_tgid = current->tgid;
+ } else if (ptrace_id == PTRACE_DETACH) {
+ ev->event_data.ptrace.tracer_pid = 0;
+ ev->event_data.ptrace.tracer_tgid = 0;
+ } else
+ return;
+
+ 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;

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