diff options
| -rw-r--r-- | drivers/connector/cn_proc.c | 25 | ||||
| -rw-r--r-- | include/linux/cn_proc.h | 4 | ||||
| -rw-r--r-- | include/uapi/linux/cn_proc.h | 10 | ||||
| -rw-r--r-- | kernel/signal.c | 2 |
4 files changed, 40 insertions, 1 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 1110478..08ae128 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -232,6 +232,31 @@ void proc_comm_connector(struct task_struct *task) cn_netlink_send(msg, CN_IDX_PROC, GFP_KERNEL); } +void proc_coredump_connector(struct task_struct *task) +{ + struct cn_msg *msg; + struct proc_event *ev; + __u8 buffer[CN_PROC_MSG_SIZE]; + struct timespec ts; + + 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_COREDUMP; + ev->event_data.coredump.process_pid = task->pid; + ev->event_data.coredump.process_tgid = task->tgid; + + 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 2c1bc1e..1d5b02a 100644 --- a/include/linux/cn_proc.h +++ b/include/linux/cn_proc.h @@ -26,6 +26,7 @@ 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_coredump_connector(struct task_struct *task); void proc_exit_connector(struct task_struct *task); #else static inline void proc_fork_connector(struct task_struct *task) @@ -48,6 +49,9 @@ static inline void proc_ptrace_connector(struct task_struct *task, int ptrace_id) {} +static inline void proc_coredump_connector(struct task_struct *task) +{} + static inline void proc_exit_connector(struct task_struct *task) {} #endif /* CONFIG_PROC_EVENTS */ diff --git a/include/uapi/linux/cn_proc.h b/include/uapi/linux/cn_proc.h index 0d7b499..f6c2710 100644 --- a/include/uapi/linux/cn_proc.h +++ b/include/uapi/linux/cn_proc.h @@ -56,7 +56,9 @@ struct proc_event { PROC_EVENT_PTRACE = 0x00000100, PROC_EVENT_COMM = 0x00000200, /* "next" should be 0x00000400 */ - /* "last" is the last process event: exit */ + /* "last" is the last process event: exit, + * while "next to last" is coredumping event */ + PROC_EVENT_COREDUMP = 0x40000000, PROC_EVENT_EXIT = 0x80000000 } what; __u32 cpu; @@ -110,11 +112,17 @@ struct proc_event { char comm[16]; } comm; + struct coredump_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + } coredump; + struct exit_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; __u32 exit_code, exit_signal; } exit; + } event_data; }; diff --git a/kernel/signal.c b/kernel/signal.c index dd72567..497330e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -32,6 +32,7 @@ #include <linux/user_namespace.h> #include <linux/uprobes.h> #include <linux/compat.h> +#include <linux/cn_proc.h> #define CREATE_TRACE_POINTS #include <trace/events/signal.h> @@ -2350,6 +2351,7 @@ relock: if (sig_kernel_coredump(signr)) { if (print_fatal_signals) print_fatal_signal(info->si_signo); + proc_coredump_connector(current); /* * If it was able to dump core, this kills all * other threads in the group and synchronizes with |
