From b086ff87251b4a4c147bc3af20369514e9d0d9ad Mon Sep 17 00:00:00 2001 From: Stefan Strogin Date: Tue, 1 May 2018 01:04:29 +0300 Subject: connector: add parent pid and tgid to coredump and exit events The intention is to get notified of process failures as soon as possible, before a possible core dumping (which could be very long) (e.g. in some process-manager). Coredump and exit process events are perfect for such use cases (see 2b5faa4c553f "connector: Added coredumping event to the process connector"). The problem is that for now the process-manager cannot know the parent of a dying process using connectors. This could be useful if the process-manager should monitor for failures only children of certain parents, so we could filter the coredump and exit events by parent process and/or thread ID. Add parent pid and tgid to coredump and exit process connectors event data. Signed-off-by: Stefan Strogin Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller --- drivers/connector/cn_proc.c | 4 ++++ include/uapi/linux/cn_proc.h | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index a782ce87715c..ed5e42461094 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -262,6 +262,8 @@ void proc_coredump_connector(struct task_struct *task) ev->what = PROC_EVENT_COREDUMP; ev->event_data.coredump.process_pid = task->pid; ev->event_data.coredump.process_tgid = task->tgid; + ev->event_data.coredump.parent_pid = task->real_parent->pid; + ev->event_data.coredump.parent_tgid = task->real_parent->tgid; memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id)); msg->ack = 0; /* not used */ @@ -288,6 +290,8 @@ void proc_exit_connector(struct task_struct *task) ev->event_data.exit.process_tgid = task->tgid; ev->event_data.exit.exit_code = task->exit_code; ev->event_data.exit.exit_signal = task->exit_signal; + ev->event_data.exit.parent_pid = task->real_parent->pid; + ev->event_data.exit.parent_tgid = task->real_parent->tgid; memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id)); msg->ack = 0; /* not used */ diff --git a/include/uapi/linux/cn_proc.h b/include/uapi/linux/cn_proc.h index 68ff25414700..db210625cee8 100644 --- a/include/uapi/linux/cn_proc.h +++ b/include/uapi/linux/cn_proc.h @@ -116,12 +116,16 @@ struct proc_event { struct coredump_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; + __kernel_pid_t parent_pid; + __kernel_pid_t parent_tgid; } coredump; struct exit_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; __u32 exit_code, exit_signal; + __kernel_pid_t parent_pid; + __kernel_pid_t parent_tgid; } exit; } event_data; -- cgit v1.2.3