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1// SPDX-License-Identifier: GPL-2.02/* Copyright 2022 Sony Group Corporation */3#define _GNU_SOURCE4#include <fcntl.h>5#include <sys/prctl.h>6#include <test_progs.h>7#include "bpf_syscall_macro.skel.h"8 9void test_bpf_syscall_macro(void)10{11 struct bpf_syscall_macro *skel = NULL;12 int err;13 int exp_arg1 = 1001;14 unsigned long exp_arg2 = 12;15 unsigned long exp_arg3 = 13;16 unsigned long exp_arg4 = 14;17 unsigned long exp_arg5 = 15;18 loff_t off_in, off_out;19 ssize_t r;20 21 /* check whether it can open program */22 skel = bpf_syscall_macro__open();23 if (!ASSERT_OK_PTR(skel, "bpf_syscall_macro__open"))24 return;25 26 skel->rodata->filter_pid = getpid();27 28 /* check whether it can load program */29 err = bpf_syscall_macro__load(skel);30 if (!ASSERT_OK(err, "bpf_syscall_macro__load"))31 goto cleanup;32 33 /* check whether it can attach kprobe */34 err = bpf_syscall_macro__attach(skel);35 if (!ASSERT_OK(err, "bpf_syscall_macro__attach"))36 goto cleanup;37 38 /* check whether args of syscall are copied correctly */39 prctl(exp_arg1, exp_arg2, exp_arg3, exp_arg4, exp_arg5);40 41 ASSERT_EQ(skel->bss->arg1, exp_arg1, "syscall_arg1");42 ASSERT_EQ(skel->bss->arg2, exp_arg2, "syscall_arg2");43 ASSERT_EQ(skel->bss->arg3, exp_arg3, "syscall_arg3");44 /* it cannot copy arg4 when uses PT_REGS_PARM4 on x86_64 */45#ifdef __x86_64__46 ASSERT_NEQ(skel->bss->arg4_cx, exp_arg4, "syscall_arg4_from_cx");47#else48 ASSERT_EQ(skel->bss->arg4_cx, exp_arg4, "syscall_arg4_from_cx");49#endif50 ASSERT_EQ(skel->bss->arg4, exp_arg4, "syscall_arg4");51 ASSERT_EQ(skel->bss->arg5, exp_arg5, "syscall_arg5");52 53 /* check whether args of syscall are copied correctly for CORE variants */54 ASSERT_EQ(skel->bss->arg1_core, exp_arg1, "syscall_arg1_core_variant");55 ASSERT_EQ(skel->bss->arg2_core, exp_arg2, "syscall_arg2_core_variant");56 ASSERT_EQ(skel->bss->arg3_core, exp_arg3, "syscall_arg3_core_variant");57 /* it cannot copy arg4 when uses PT_REGS_PARM4_CORE on x86_64 */58#ifdef __x86_64__59 ASSERT_NEQ(skel->bss->arg4_core_cx, exp_arg4, "syscall_arg4_from_cx_core_variant");60#else61 ASSERT_EQ(skel->bss->arg4_core_cx, exp_arg4, "syscall_arg4_from_cx_core_variant");62#endif63 ASSERT_EQ(skel->bss->arg4_core, exp_arg4, "syscall_arg4_core_variant");64 ASSERT_EQ(skel->bss->arg5_core, exp_arg5, "syscall_arg5_core_variant");65 66 ASSERT_EQ(skel->bss->option_syscall, exp_arg1, "BPF_KPROBE_SYSCALL_option");67 ASSERT_EQ(skel->bss->arg2_syscall, exp_arg2, "BPF_KPROBE_SYSCALL_arg2");68 ASSERT_EQ(skel->bss->arg3_syscall, exp_arg3, "BPF_KPROBE_SYSCALL_arg3");69 ASSERT_EQ(skel->bss->arg4_syscall, exp_arg4, "BPF_KPROBE_SYSCALL_arg4");70 ASSERT_EQ(skel->bss->arg5_syscall, exp_arg5, "BPF_KPROBE_SYSCALL_arg5");71 72 r = splice(-42, &off_in, 42, &off_out, 0x12340000, SPLICE_F_NONBLOCK);73 err = -errno;74 ASSERT_EQ(r, -1, "splice_res");75 ASSERT_EQ(err, -EBADF, "splice_err");76 77 ASSERT_EQ(skel->bss->splice_fd_in, -42, "splice_arg1");78 ASSERT_EQ(skel->bss->splice_off_in, (__u64)&off_in, "splice_arg2");79 ASSERT_EQ(skel->bss->splice_fd_out, 42, "splice_arg3");80 ASSERT_EQ(skel->bss->splice_off_out, (__u64)&off_out, "splice_arg4");81 ASSERT_EQ(skel->bss->splice_len, 0x12340000, "splice_arg5");82 ASSERT_EQ(skel->bss->splice_flags, SPLICE_F_NONBLOCK, "splice_arg6");83 84cleanup:85 bpf_syscall_macro__destroy(skel);86}87