Remove platform C++ bpfloader test
C/C++ platform bpf loader is being replaced by rust version. This test never had much value, and additional relies on a sepolicy violation being allowed by su. The bpf ring buf test is far better. Test: TreeHugger Flag: EXEMPT test code removal Signed-off-by: Maciej Żenczykowski maze@google.com> Change-Id: I448cc543aa9a0c161515ae2189020bf98db7bca3
This commit is contained in:
Maciej Żenczykowski
parent
315feea5fc
commit
d93083a979
2 changed files with 0 additions and 159 deletions
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@ -74,34 +74,6 @@ rust_bindgen {
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],
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}
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cc_test {
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name: "libbpf_load_test",
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test_suites: ["general-tests"],
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header_libs: ["bpf_headers"],
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srcs: [
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"BpfLoadTest.cpp",
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],
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defaults: ["bpf_cc_defaults"],
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cflags: [
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"-Wno-error=unused-variable",
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],
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static_libs: [
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"libbpf_android",
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"libgmock",
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],
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shared_libs: [
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"libbpf_bcc",
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"libbase",
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"liblog",
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"libutils",
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],
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data: [
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":bpfLoadTpProg.o",
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],
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require_root: true,
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}
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rust_defaults {
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name: "bpfloader_defaults",
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srcs: [
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@ -1,131 +0,0 @@
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android-base/file.h>
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#include <android-base/macros.h>
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#include <gtest/gtest.h>
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#include <libbpf.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <iostream>
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#include "bpf/BpfMap.h"
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#include "bpf/BpfUtils.h"
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#include "include/libbpf_android.h"
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namespace android {
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namespace bpf {
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class BpfLoadTest : public ::testing::Test {
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protected:
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BpfLoadTest() {}
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int mProgFd;
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std::string mTpProgPath;
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std::string mTpNeverLoadProgPath;
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std::string mTpMapPath;
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void SetUp() {
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/*
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* b/326156952
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*
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* Kernels prior to 5.11 used rlimit memlock accounting for bpf memory
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* allocations, and therefore require increasing the rlimit of this
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* process for the maps to be created successfully.
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*
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* 5.11 introduces cgroup-based accounting as discussed here:
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* https://lore.kernel.org/bpf/20201201215900.3569844-1-guro@fb.com/
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*/
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if (!isAtLeastKernelVersion(5, 11, 0)) EXPECT_EQ(setrlimitForTest(), 0);
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mTpProgPath = "/sys/fs/bpf/prog_bpfLoadTpProg_tracepoint_sched_sched_switch";
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unlink(mTpProgPath.c_str());
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mTpNeverLoadProgPath = "/sys/fs/bpf/prog_bpfLoadTpProg_tracepoint_sched_sched_wakeup";
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unlink(mTpNeverLoadProgPath.c_str());
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mTpMapPath = "/sys/fs/bpf/map_bpfLoadTpProg_cpu_pid_map";
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unlink(mTpMapPath.c_str());
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auto progPath = android::base::GetExecutableDirectory() + "/bpfLoadTpProg.o";
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bool critical = true;
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bpf_prog_type kAllowed[] = {
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BPF_PROG_TYPE_UNSPEC,
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};
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Location loc = {
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.dir = "",
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.prefix = "",
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.allowedProgTypes = kAllowed,
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.allowedProgTypesLength = arraysize(kAllowed),
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};
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EXPECT_EQ(android::bpf::loadProg(progPath.c_str(), &critical, loc), -1);
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ASSERT_EQ(android::bpf::loadProg(progPath.c_str(), &critical), 0);
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EXPECT_EQ(false, critical);
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mProgFd = retrieveProgram(mTpProgPath.c_str());
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ASSERT_GT(mProgFd, 0);
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int ret = bpf_attach_tracepoint(mProgFd, "sched", "sched_switch");
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EXPECT_NE(ret, 0);
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}
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void TearDown() {
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close(mProgFd);
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unlink(mTpProgPath.c_str());
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unlink(mTpMapPath.c_str());
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}
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void checkMapNonZero() {
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// The test program installs a tracepoint on sched:sched_switch
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// and expects the kernel to populate a PID corresponding to CPU
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android::bpf::BpfMap<uint32_t, uint32_t> m(mTpMapPath.c_str());
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// Wait for program to run a little
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sleep(1);
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int non_zero = 0;
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const auto iterFunc = [&non_zero](const uint32_t& key, const uint32_t& val,
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BpfMap<uint32_t, uint32_t>& map) {
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if (val && !non_zero) {
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non_zero = 1;
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}
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UNUSED(key);
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UNUSED(map);
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return base::Result<void>();
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};
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EXPECT_RESULT_OK(m.iterateWithValue(iterFunc));
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EXPECT_EQ(non_zero, 1);
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}
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void checkKernelVersionEnforced() {
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ASSERT_EQ(retrieveProgram(mTpNeverLoadProgPath.c_str()), -1);
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ASSERT_EQ(errno, ENOENT);
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}
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};
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TEST_F(BpfLoadTest, bpfCheckMap) {
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checkMapNonZero();
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}
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TEST_F(BpfLoadTest, bpfCheckMinKernelVersionEnforced) {
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checkKernelVersionEnforced();
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}
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} // namespace bpf
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} // namespace android
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