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| author |  Andrii Nakryiko <andrii@kernel.org>
| 2023-01-20 12:09:13 -0800 |
|---|---|---|
| committer |  Daniel Borkmann <daniel@iogearbox.net>
| 2023-01-23 20:53:01 +0100 |
| commit | 92dc5cdfc1131befa061cab8ed772c7bf8bfb2db (patch) | |
| tree | 20220b0d5adf82494f06de8f15d2ffba19f1492b /tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c | |
| parent | libbpf: Define loongarch syscall regs spec in bpf_tracing.h (diff) | |
| download | linux-92dc5cdfc1131befa061cab8ed772c7bf8bfb2db.tar.gz linux-92dc5cdfc1131befa061cab8ed772c7bf8bfb2db.tar.bz2 linux-92dc5cdfc1131befa061cab8ed772c7bf8bfb2db.zip | |
selftests/bpf: Add 6-argument syscall tracing test
Turns out splice() is one of the syscalls that's using current maximum
number of arguments (six). This is perfect for testing, so extend
bpf_syscall_macro selftest to also trace splice() syscall, using
BPF_KSYSCALL() macro. This makes sure all the syscall argument register
definitions are correct.
Suggested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com> # arm64
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> # s390x
Link: https://lore.kernel.org/bpf/20230120200914.3008030-25-andrii@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c b/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c index c381faaae741..2900c5e9a016 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c +++ b/tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c @@ -1,5 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright 2022 Sony Group Corporation */ +#define _GNU_SOURCE +#include <fcntl.h> #include <sys/prctl.h> #include <test_progs.h> #include "bpf_syscall_macro.skel.h" @@ -13,6 +15,8 @@ void test_bpf_syscall_macro(void) unsigned long exp_arg3 = 13; unsigned long exp_arg4 = 14; unsigned long exp_arg5 = 15; + loff_t off_in, off_out; + ssize_t r; /* check whether it can open program */ skel = bpf_syscall_macro__open(); @@ -33,6 +37,7 @@ void test_bpf_syscall_macro(void) /* check whether args of syscall are copied correctly */ prctl(exp_arg1, exp_arg2, exp_arg3, exp_arg4, exp_arg5); + #if defined(__aarch64__) || defined(__s390__) ASSERT_NEQ(skel->bss->arg1, exp_arg1, "syscall_arg1"); #else @@ -68,6 +73,18 @@ void test_bpf_syscall_macro(void) ASSERT_EQ(skel->bss->arg4_syscall, exp_arg4, "BPF_KPROBE_SYSCALL_arg4"); ASSERT_EQ(skel->bss->arg5_syscall, exp_arg5, "BPF_KPROBE_SYSCALL_arg5"); + r = splice(-42, &off_in, 42, &off_out, 0x12340000, SPLICE_F_NONBLOCK); + err = -errno; + ASSERT_EQ(r, -1, "splice_res"); + ASSERT_EQ(err, -EBADF, "splice_err"); + + ASSERT_EQ(skel->bss->splice_fd_in, -42, "splice_arg1"); + ASSERT_EQ(skel->bss->splice_off_in, (__u64)&off_in, "splice_arg2"); + ASSERT_EQ(skel->bss->splice_fd_out, 42, "splice_arg3"); + ASSERT_EQ(skel->bss->splice_off_out, (__u64)&off_out, "splice_arg4"); + ASSERT_EQ(skel->bss->splice_len, 0x12340000, "splice_arg5"); + ASSERT_EQ(skel->bss->splice_flags, SPLICE_F_NONBLOCK, "splice_arg6"); + cleanup: bpf_syscall_macro__destroy(skel); } |