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-rw-r--r--test/syscalls/linux/kcov.cc70
1 files changed, 0 insertions, 70 deletions
diff --git a/test/syscalls/linux/kcov.cc b/test/syscalls/linux/kcov.cc
deleted file mode 100644
index f3c30444e..000000000
--- a/test/syscalls/linux/kcov.cc
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <sys/errno.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-
-#include "gtest/gtest.h"
-#include "test/util/capability_util.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/test_util.h"
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-// For this test to work properly, it must be run with coverage enabled. On
-// native Linux, this involves compiling the kernel with kcov enabled. For
-// gVisor, we need to enable the Go coverage tool, e.g.
-// bazel test --collect_coverage_data --instrumentation_filter=//pkg/... <test>.
-TEST(KcovTest, Kcov) {
- SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability((CAP_DAC_OVERRIDE))));
-
- constexpr int kSize = 4096;
- constexpr int KCOV_INIT_TRACE = 0x80086301;
- constexpr int KCOV_ENABLE = 0x6364;
-
- int fd;
- ASSERT_THAT(fd = open("/sys/kernel/debug/kcov", O_RDWR),
- AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(ENOENT)));
-
- // Kcov not enabled.
- SKIP_IF(errno == ENOENT);
-
- ASSERT_THAT(ioctl(fd, KCOV_INIT_TRACE, kSize), SyscallSucceeds());
- uint64_t* area = (uint64_t*)mmap(nullptr, kSize * sizeof(uint64_t),
- PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-
- ASSERT_TRUE(area != MAP_FAILED);
- ASSERT_THAT(ioctl(fd, KCOV_ENABLE, 0), SyscallSucceeds());
-
- for (int i = 0; i < 10; i++) {
- // Make some syscalls to generate coverage data.
- ASSERT_THAT(ioctl(fd, KCOV_ENABLE, 0), SyscallFailsWithErrno(EINVAL));
- }
-
- uint64_t num_pcs = *(uint64_t*)(area);
- EXPECT_GT(num_pcs, 0);
- for (uint64_t i = 1; i <= num_pcs; i++) {
- // Verify that PCs are in the standard kernel range.
- EXPECT_GT(area[i], 0xffffffff7fffffffL);
- }
-}
-
-} // namespace
-
-} // namespace testing
-} // namespace gvisor