1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Carlos Neira cneirabustos@gmail.com */ 3 4 #include <linux/bpf.h> 5 #include <stdint.h> 6 #include <bpf/bpf_helpers.h> 7 8 __u64 user_pid = 0; 9 __u64 user_tgid = 0; 10 __u64 dev = 0; 11 __u64 ino = 0; 12 13 SEC("tracepoint/syscalls/sys_enter_nanosleep") handler(const void * ctx)14int handler(const void *ctx) 15 { 16 struct bpf_pidns_info nsdata; 17 18 if (bpf_get_ns_current_pid_tgid(dev, ino, &nsdata, sizeof(struct bpf_pidns_info))) 19 return 0; 20 21 user_pid = nsdata.pid; 22 user_tgid = nsdata.tgid; 23 24 return 0; 25 } 26 27 char _license[] SEC("license") = "GPL"; 28