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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core_retro.c (913B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2020 Facebook
      3#define _GNU_SOURCE
      4#include <test_progs.h>
      5#include "test_core_retro.skel.h"
      6
      7void test_core_retro(void)
      8{
      9	int err, zero = 0, res, my_pid = getpid();
     10	struct test_core_retro *skel;
     11
     12	/* load program */
     13	skel = test_core_retro__open_and_load();
     14	if (!ASSERT_OK_PTR(skel, "skel_load"))
     15		goto out_close;
     16
     17	err = bpf_map__update_elem(skel->maps.exp_tgid_map, &zero, sizeof(zero),
     18				   &my_pid, sizeof(my_pid), 0);
     19	if (!ASSERT_OK(err, "map_update"))
     20		goto out_close;
     21
     22	/* attach probe */
     23	err = test_core_retro__attach(skel);
     24	if (!ASSERT_OK(err, "attach_kprobe"))
     25		goto out_close;
     26
     27	/* trigger */
     28	usleep(1);
     29
     30	err = bpf_map__lookup_elem(skel->maps.results, &zero, sizeof(zero), &res, sizeof(res), 0);
     31	if (!ASSERT_OK(err, "map_lookup"))
     32		goto out_close;
     33
     34	ASSERT_EQ(res, my_pid, "pid_check");
     35
     36out_close:
     37	test_core_retro__destroy(skel);
     38}