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_bpf_syscall_macro.c (2729B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright 2022 Sony Group Corporation */
      3#include <sys/prctl.h>
      4#include <test_progs.h>
      5#include "bpf_syscall_macro.skel.h"
      6
      7void test_bpf_syscall_macro(void)
      8{
      9	struct bpf_syscall_macro *skel = NULL;
     10	int err;
     11	int exp_arg1 = 1001;
     12	unsigned long exp_arg2 = 12;
     13	unsigned long exp_arg3 = 13;
     14	unsigned long exp_arg4 = 14;
     15	unsigned long exp_arg5 = 15;
     16
     17	/* check whether it can open program */
     18	skel = bpf_syscall_macro__open();
     19	if (!ASSERT_OK_PTR(skel, "bpf_syscall_macro__open"))
     20		return;
     21
     22	skel->rodata->filter_pid = getpid();
     23
     24	/* check whether it can load program */
     25	err = bpf_syscall_macro__load(skel);
     26	if (!ASSERT_OK(err, "bpf_syscall_macro__load"))
     27		goto cleanup;
     28
     29	/* check whether it can attach kprobe */
     30	err = bpf_syscall_macro__attach(skel);
     31	if (!ASSERT_OK(err, "bpf_syscall_macro__attach"))
     32		goto cleanup;
     33
     34	/* check whether args of syscall are copied correctly */
     35	prctl(exp_arg1, exp_arg2, exp_arg3, exp_arg4, exp_arg5);
     36#if defined(__aarch64__) || defined(__s390__)
     37	ASSERT_NEQ(skel->bss->arg1, exp_arg1, "syscall_arg1");
     38#else
     39	ASSERT_EQ(skel->bss->arg1, exp_arg1, "syscall_arg1");
     40#endif
     41	ASSERT_EQ(skel->bss->arg2, exp_arg2, "syscall_arg2");
     42	ASSERT_EQ(skel->bss->arg3, exp_arg3, "syscall_arg3");
     43	/* it cannot copy arg4 when uses PT_REGS_PARM4 on x86_64 */
     44#ifdef __x86_64__
     45	ASSERT_NEQ(skel->bss->arg4_cx, exp_arg4, "syscall_arg4_from_cx");
     46#else
     47	ASSERT_EQ(skel->bss->arg4_cx, exp_arg4, "syscall_arg4_from_cx");
     48#endif
     49	ASSERT_EQ(skel->bss->arg4, exp_arg4, "syscall_arg4");
     50	ASSERT_EQ(skel->bss->arg5, exp_arg5, "syscall_arg5");
     51
     52	/* check whether args of syscall are copied correctly for CORE variants */
     53	ASSERT_EQ(skel->bss->arg1_core, exp_arg1, "syscall_arg1_core_variant");
     54	ASSERT_EQ(skel->bss->arg2_core, exp_arg2, "syscall_arg2_core_variant");
     55	ASSERT_EQ(skel->bss->arg3_core, exp_arg3, "syscall_arg3_core_variant");
     56	/* it cannot copy arg4 when uses PT_REGS_PARM4_CORE on x86_64 */
     57#ifdef __x86_64__
     58	ASSERT_NEQ(skel->bss->arg4_core_cx, exp_arg4, "syscall_arg4_from_cx_core_variant");
     59#else
     60	ASSERT_EQ(skel->bss->arg4_core_cx, exp_arg4, "syscall_arg4_from_cx_core_variant");
     61#endif
     62	ASSERT_EQ(skel->bss->arg4_core, exp_arg4, "syscall_arg4_core_variant");
     63	ASSERT_EQ(skel->bss->arg5_core, exp_arg5, "syscall_arg5_core_variant");
     64
     65	ASSERT_EQ(skel->bss->option_syscall, exp_arg1, "BPF_KPROBE_SYSCALL_option");
     66	ASSERT_EQ(skel->bss->arg2_syscall, exp_arg2, "BPF_KPROBE_SYSCALL_arg2");
     67	ASSERT_EQ(skel->bss->arg3_syscall, exp_arg3, "BPF_KPROBE_SYSCALL_arg3");
     68	ASSERT_EQ(skel->bss->arg4_syscall, exp_arg4, "BPF_KPROBE_SYSCALL_arg4");
     69	ASSERT_EQ(skel->bss->arg5_syscall, exp_arg5, "BPF_KPROBE_SYSCALL_arg5");
     70
     71cleanup:
     72	bpf_syscall_macro__destroy(skel);
     73}