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 
9 pid_t pid = 0;
10 long ret = 0;
11 void *user_ptr = 0;
12 char buf[256] = {};
13 
14 SEC("tracepoint/syscalls/sys_enter_nanosleep")
on_write(void * ctx)15 int 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 
25 char _license[] SEC("license") = "GPL";
26