1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/bpf.h>
4#include <bpf/bpf_helpers.h>
5#include <bpf/bpf_tracing.h>
6
7#include <sys/types.h>
8
9pid_t pid = 0;
10long ret = 0;
11void *user_ptr = 0;
12char buf[256] = {};
13
14SEC("tracepoint/syscalls/sys_enter_nanosleep")
15int on_write(void *ctx)
16{
17	if (pid != (bpf_get_current_pid_tgid() >> 32))
18		return 0;
19
20	ret = bpf_probe_read_user_str(buf, sizeof(buf), user_ptr);
21
22	return 0;
23}
24
25char _license[] SEC("license") = "GPL";
26