[linux-2.6-block.git] / samples / bpf / trace_output_kern.c

#include <linux/ptrace.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"

struct bpf_map_def SEC("maps") my_map = {
	.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
	.key_size = sizeof(int),
	.value_size = sizeof(u32),
	.max_entries = 2,
};

SEC("kprobe/sys_write")
int bpf_prog1(struct pt_regs *ctx)
{
	struct S {
		u64 pid;
		u64 cookie;
	} data;

	data.pid = bpf_get_current_pid_tgid();
	data.cookie = 0x12345678;

	bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));

	return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
Commit	Line	Data
39111695 AS	1	#include <linux/ptrace.h>
	2	#include <linux/version.h>
	3	#include <uapi/linux/bpf.h>
	4	#include "bpf_helpers.h"
	5
	6	struct bpf_map_def SEC("maps") my_map = {
	7	.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
	8	.key_size = sizeof(int),
	9	.value_size = sizeof(u32),
	10	.max_entries = 2,
	11	};
	12
	13	SEC("kprobe/sys_write")
	14	int bpf_prog1(struct pt_regs *ctx)
	15	{
	16	struct S {
	17	u64 pid;
	18	u64 cookie;
	19	} data;
	20
39111695 AS	21	data.pid = bpf_get_current_pid_tgid();
	22	data.cookie = 0x12345678;
	23
	24	bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));
	25
	26	return 0;
	27	}
	28
	29	char _license[] SEC("license") = "GPL";
	30	u32 _version SEC("version") = LINUX_VERSION_CODE;