cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_ns_current_pid_tgid.c (555B)

      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
     13SEC("tracepoint/syscalls/sys_enter_nanosleep")
     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
     27char _license[] SEC("license") = "GPL";