11c1052e0SCarlos Neira // SPDX-License-Identifier: GPL-2.0 21c1052e0SCarlos Neira /* Copyright (c) 2019 Carlos Neira cneirabustos@gmail.com */ 31c1052e0SCarlos Neira 41c1052e0SCarlos Neira #include <linux/bpf.h> 51c1052e0SCarlos Neira #include <stdint.h> 61c1052e0SCarlos Neira #include <bpf/bpf_helpers.h> 71c1052e0SCarlos Neira 8*09c02d55SCarlos Neira __u64 user_pid = 0; 9*09c02d55SCarlos Neira __u64 user_tgid = 0; 10*09c02d55SCarlos Neira __u64 dev = 0; 11*09c02d55SCarlos Neira __u64 ino = 0; 121c1052e0SCarlos Neira 13*09c02d55SCarlos Neira SEC("tracepoint/syscalls/sys_enter_nanosleep") handler(const void * ctx)14*09c02d55SCarlos Neiraint handler(const void *ctx) 151c1052e0SCarlos Neira { 161c1052e0SCarlos Neira struct bpf_pidns_info nsdata; 171c1052e0SCarlos Neira 18*09c02d55SCarlos Neira if (bpf_get_ns_current_pid_tgid(dev, ino, &nsdata, sizeof(struct bpf_pidns_info))) 191c1052e0SCarlos Neira return 0; 201c1052e0SCarlos Neira 21*09c02d55SCarlos Neira user_pid = nsdata.pid; 22*09c02d55SCarlos Neira user_tgid = nsdata.tgid; 231c1052e0SCarlos Neira 241c1052e0SCarlos Neira return 0; 251c1052e0SCarlos Neira } 261c1052e0SCarlos Neira 271c1052e0SCarlos Neira char _license[] SEC("license") = "GPL"; 28