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-rw-r--r--test/perf/BUILD42
-rw-r--r--test/perf/linux/BUILD114
-rw-r--r--test/perf/linux/dup_benchmark.cc55
-rw-r--r--test/perf/linux/randread_benchmark.cc2
-rw-r--r--test/perf/linux/send_recv_benchmark.cc23
-rw-r--r--test/perf/linux/verity_open_benchmark.cc71
-rw-r--r--test/perf/linux/verity_open_read_close_benchmark.cc75
-rw-r--r--test/perf/linux/verity_randread_benchmark.cc108
-rw-r--r--test/perf/linux/verity_read_benchmark.cc69
-rw-r--r--test/perf/linux/verity_stat_benchmark.cc84
10 files changed, 639 insertions, 4 deletions
diff --git a/test/perf/BUILD b/test/perf/BUILD
index 75b5003e2..59923da47 100644
--- a/test/perf/BUILD
+++ b/test/perf/BUILD
@@ -70,6 +70,13 @@ syscall_test(
)
syscall_test(
+ size = "large",
+ add_overlay = True,
+ debug = False,
+ test = "//test/perf/linux:dup_benchmark",
+)
+
+syscall_test(
debug = False,
test = "//test/perf/linux:pipe_benchmark",
)
@@ -139,3 +146,38 @@ syscall_test(
debug = False,
test = "//test/perf/linux:write_benchmark",
)
+
+syscall_test(
+ size = "large",
+ debug = False,
+ test = "//test/perf/linux:verity_open_benchmark",
+ vfs1 = False,
+)
+
+syscall_test(
+ size = "large",
+ debug = False,
+ test = "//test/perf/linux:verity_read_benchmark",
+ vfs1 = False,
+)
+
+syscall_test(
+ size = "large",
+ debug = False,
+ test = "//test/perf/linux:verity_randread_benchmark",
+ vfs1 = False,
+)
+
+syscall_test(
+ size = "large",
+ debug = False,
+ test = "//test/perf/linux:verity_open_read_close_benchmark",
+ vfs1 = False,
+)
+
+syscall_test(
+ size = "large",
+ debug = False,
+ test = "//test/perf/linux:verity_stat_benchmark",
+ vfs1 = False,
+)
diff --git a/test/perf/linux/BUILD b/test/perf/linux/BUILD
index dd1d2438c..020a69ab5 100644
--- a/test/perf/linux/BUILD
+++ b/test/perf/linux/BUILD
@@ -27,10 +27,10 @@ cc_binary(
deps = [
gbenchmark,
gtest,
- "//test/syscalls/linux:socket_test_util",
"//test/util:file_descriptor",
"//test/util:logging",
"//test/util:posix_error",
+ "//test/util:socket_util",
"//test/util:test_main",
"//test/util:test_util",
"//test/util:thread_util",
@@ -109,6 +109,22 @@ cc_binary(
)
cc_binary(
+ name = "dup_benchmark",
+ testonly = 1,
+ srcs = [
+ "dup_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ ],
+)
+
+cc_binary(
name = "read_benchmark",
testonly = 1,
srcs = [
@@ -370,3 +386,99 @@ cc_binary(
"//test/util:test_main",
],
)
+
+cc_binary(
+ name = "verity_open_benchmark",
+ testonly = 1,
+ srcs = [
+ "verity_open_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:capability_util",
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ "//test/util:test_util",
+ "//test/util:verity_util",
+ ],
+)
+
+cc_binary(
+ name = "verity_read_benchmark",
+ testonly = 1,
+ srcs = [
+ "verity_read_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:capability_util",
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ "//test/util:test_util",
+ "//test/util:verity_util",
+ ],
+)
+
+cc_binary(
+ name = "verity_randread_benchmark",
+ testonly = 1,
+ srcs = [
+ "verity_randread_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:capability_util",
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ "//test/util:test_util",
+ "//test/util:verity_util",
+ ],
+)
+
+cc_binary(
+ name = "verity_open_read_close_benchmark",
+ testonly = 1,
+ srcs = [
+ "verity_open_read_close_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:capability_util",
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ "//test/util:test_util",
+ "//test/util:verity_util",
+ ],
+)
+
+cc_binary(
+ name = "verity_stat_benchmark",
+ testonly = 1,
+ srcs = [
+ "verity_stat_benchmark.cc",
+ ],
+ deps = [
+ gbenchmark,
+ gtest,
+ "//test/util:capability_util",
+ "//test/util:fs_util",
+ "//test/util:logging",
+ "//test/util:temp_path",
+ "//test/util:test_main",
+ "//test/util:test_util",
+ "//test/util:verity_util",
+ "@com_google_absl//absl/strings",
+ ],
+)
diff --git a/test/perf/linux/dup_benchmark.cc b/test/perf/linux/dup_benchmark.cc
new file mode 100644
index 000000000..5d808d225
--- /dev/null
+++ b/test/perf/linux/dup_benchmark.cc
@@ -0,0 +1,55 @@
+// Copyright 2020 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 <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+#include "test/util/fs_util.h"
+#include "test/util/logging.h"
+#include "test/util/temp_path.h"
+
+namespace gvisor {
+
+namespace {
+
+void BM_Dup(benchmark::State& state) {
+ const int size = state.range(0);
+
+ for (auto _ : state) {
+ std::vector<int> v;
+ for (int i = 0; i < size; i++) {
+ int fd = dup(2);
+ TEST_CHECK(fd != -1);
+ v.push_back(fd);
+ }
+ for (int i = 0; i < size; i++) {
+ int fd = v[i];
+ close(fd);
+ }
+ }
+ state.SetItemsProcessed(state.iterations() * size);
+}
+
+BENCHMARK(BM_Dup)->Range(1, 1 << 15)->UseRealTime();
+
+} // namespace
+
+} // namespace gvisor
diff --git a/test/perf/linux/randread_benchmark.cc b/test/perf/linux/randread_benchmark.cc
index b0eb8c24e..11b56a8cb 100644
--- a/test/perf/linux/randread_benchmark.cc
+++ b/test/perf/linux/randread_benchmark.cc
@@ -85,7 +85,7 @@ void BM_RandRead(benchmark::State& state) {
unsigned int seed = 1;
for (auto _ : state) {
TEST_CHECK(PreadFd(fd.get(), buf.data(), buf.size(),
- rand_r(&seed) % kFileSize) == size);
+ rand_r(&seed) % (kFileSize - buf.size())) == size);
}
state.SetBytesProcessed(static_cast<int64_t>(size) *
diff --git a/test/perf/linux/send_recv_benchmark.cc b/test/perf/linux/send_recv_benchmark.cc
index d73e49523..2d443f54f 100644
--- a/test/perf/linux/send_recv_benchmark.cc
+++ b/test/perf/linux/send_recv_benchmark.cc
@@ -23,10 +23,10 @@
#include "gtest/gtest.h"
#include "absl/synchronization/notification.h"
#include "benchmark/benchmark.h"
-#include "test/syscalls/linux/socket_test_util.h"
#include "test/util/file_descriptor.h"
#include "test/util/logging.h"
#include "test/util/posix_error.h"
+#include "test/util/socket_util.h"
#include "test/util/test_util.h"
#include "test/util/thread_util.h"
@@ -80,6 +80,9 @@ void BM_Recvmsg(benchmark::State& state) {
int64_t bytes_received = 0;
for (auto ignored : state) {
int n = recvmsg(recv_socket.get(), recv_msg.header(), 0);
+ if (n == -1 && errno == EINTR) {
+ continue;
+ }
TEST_CHECK(n > 0);
bytes_received += n;
}
@@ -108,6 +111,9 @@ void BM_Sendmsg(benchmark::State& state) {
int64_t bytes_sent = 0;
for (auto ignored : state) {
int n = sendmsg(send_socket.get(), send_msg.header(), 0);
+ if (n == -1 && errno == EINTR) {
+ continue;
+ }
TEST_CHECK(n > 0);
bytes_sent += n;
}
@@ -137,6 +143,9 @@ void BM_Recvfrom(benchmark::State& state) {
for (auto ignored : state) {
int n = recvfrom(recv_socket.get(), recv_buffer, kMessageSize, 0, nullptr,
nullptr);
+ if (n == -1 && errno == EINTR) {
+ continue;
+ }
TEST_CHECK(n > 0);
bytes_received += n;
}
@@ -166,6 +175,9 @@ void BM_Sendto(benchmark::State& state) {
int64_t bytes_sent = 0;
for (auto ignored : state) {
int n = sendto(send_socket.get(), send_buffer, kMessageSize, 0, nullptr, 0);
+ if (n == -1 && errno == EINTR) {
+ continue;
+ }
TEST_CHECK(n > 0);
bytes_sent += n;
}
@@ -247,6 +259,9 @@ void BM_RecvmsgWithControlBuf(benchmark::State& state) {
int64_t bytes_received = 0;
for (auto ignored : state) {
int n = recvmsg(recv_socket.get(), recv_msg.header(), 0);
+ if (n == -1 && errno == EINTR) {
+ continue;
+ }
TEST_CHECK(n > 0);
bytes_received += n;
}
@@ -316,7 +331,11 @@ void BM_SendmsgTCP(benchmark::State& state) {
ScopedThread t([&recv_msg, &recv_socket, &notification] {
while (!notification.HasBeenNotified()) {
- TEST_CHECK(recvmsg(recv_socket.get(), recv_msg.header(), 0) >= 0);
+ int rc = recvmsg(recv_socket.get(), recv_msg.header(), 0);
+ if (rc == -1 && errno == EINTR) {
+ continue;
+ }
+ TEST_CHECK(rc >= 0);
}
});
diff --git a/test/perf/linux/verity_open_benchmark.cc b/test/perf/linux/verity_open_benchmark.cc
new file mode 100644
index 000000000..026b6f101
--- /dev/null
+++ b/test/perf/linux/verity_open_benchmark.cc
@@ -0,0 +1,71 @@
+// Copyright 2021 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 <fcntl.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+#include "test/util/capability_util.h"
+#include "test/util/fs_util.h"
+#include "test/util/logging.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+#include "test/util/verity_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+void BM_Open(benchmark::State& state) {
+ const int size = state.range(0);
+ std::vector<TempPath> cache;
+ std::vector<EnableTarget> targets;
+
+ // Mount a tmpfs file system to be wrapped by a verity fs.
+ TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+ TEST_CHECK(mount("", dir.path().c_str(), "tmpfs", 0, "") == 0);
+
+ for (int i = 0; i < size; i++) {
+ auto path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path()));
+ targets.emplace_back(
+ EnableTarget(std::string(Basename(path.path())), O_RDONLY));
+ cache.emplace_back(std::move(path));
+ }
+
+ std::string verity_dir =
+ TEST_CHECK_NO_ERRNO_AND_VALUE(MountVerity(dir.path(), targets));
+
+ unsigned int seed = 1;
+ for (auto _ : state) {
+ const int chosen = rand_r(&seed) % size;
+ int fd = open(JoinPath(verity_dir, targets[chosen].path).c_str(), O_RDONLY);
+ TEST_CHECK(fd != -1);
+ close(fd);
+ }
+}
+
+BENCHMARK(BM_Open)->Range(1, 128)->UseRealTime();
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor
diff --git a/test/perf/linux/verity_open_read_close_benchmark.cc b/test/perf/linux/verity_open_read_close_benchmark.cc
new file mode 100644
index 000000000..e77577f22
--- /dev/null
+++ b/test/perf/linux/verity_open_read_close_benchmark.cc
@@ -0,0 +1,75 @@
+// Copyright 2021 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 <fcntl.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+#include "test/util/capability_util.h"
+#include "test/util/fs_util.h"
+#include "test/util/logging.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+#include "test/util/verity_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+void BM_VerityOpenReadClose(benchmark::State& state) {
+ const int size = state.range(0);
+
+ // Mount a tmpfs file system to be wrapped by a verity fs.
+ TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+ TEST_CHECK(mount("", dir.path().c_str(), "tmpfs", 0, "") == 0);
+
+ std::vector<TempPath> cache;
+ std::vector<EnableTarget> targets;
+
+ for (int i = 0; i < size; i++) {
+ auto file = ASSERT_NO_ERRNO_AND_VALUE(
+ TempPath::CreateFileWith(dir.path(), "some contents", 0644));
+ targets.emplace_back(
+ EnableTarget(std::string(Basename(file.path())), O_RDONLY));
+ cache.emplace_back(std::move(file));
+ }
+
+ std::string verity_dir =
+ TEST_CHECK_NO_ERRNO_AND_VALUE(MountVerity(dir.path(), targets));
+
+ char buf[1];
+ unsigned int seed = 1;
+ for (auto _ : state) {
+ const int chosen = rand_r(&seed) % size;
+ int fd = open(JoinPath(verity_dir, targets[chosen].path).c_str(), O_RDONLY);
+ TEST_CHECK(fd != -1);
+ TEST_CHECK(read(fd, buf, 1) == 1);
+ close(fd);
+ }
+}
+
+BENCHMARK(BM_VerityOpenReadClose)->Range(1000, 16384)->UseRealTime();
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor
diff --git a/test/perf/linux/verity_randread_benchmark.cc b/test/perf/linux/verity_randread_benchmark.cc
new file mode 100644
index 000000000..4178cfad8
--- /dev/null
+++ b/test/perf/linux/verity_randread_benchmark.cc
@@ -0,0 +1,108 @@
+// Copyright 2021 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 <fcntl.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+#include "test/util/logging.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+#include "test/util/verity_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+// Create a 1GB file that will be read from at random positions. This should
+// invalid any performance gains from caching.
+const uint64_t kFileSize = Megabytes(1024);
+
+// How many bytes to write at once to initialize the file used to read from.
+const uint32_t kWriteSize = 65536;
+
+// Largest benchmarked read unit.
+const uint32_t kMaxRead = Megabytes(64);
+
+// Global test state, initialized once per process lifetime.
+struct GlobalState {
+ explicit GlobalState() {
+ // Mount a tmpfs file system to be wrapped by a verity fs.
+ tmp_dir_ = TempPath::CreateDir().ValueOrDie();
+ TEST_CHECK(mount("", tmp_dir_.path().c_str(), "tmpfs", 0, "") == 0);
+ file_ = TempPath::CreateFileIn(tmp_dir_.path()).ValueOrDie();
+ filename_ = std::string(Basename(file_.path()));
+
+ FileDescriptor fd = Open(file_.path(), O_WRONLY).ValueOrDie();
+
+ // Try to minimize syscalls by using maximum size writev() requests.
+ std::vector<char> buffer(kWriteSize);
+ RandomizeBuffer(buffer.data(), buffer.size());
+ const std::vector<std::vector<struct iovec>> iovecs_list =
+ GenerateIovecs(kFileSize + kMaxRead, buffer.data(), buffer.size());
+ for (const auto& iovecs : iovecs_list) {
+ TEST_CHECK(writev(fd.get(), iovecs.data(), iovecs.size()) >= 0);
+ }
+ verity_dir_ =
+ MountVerity(tmp_dir_.path(), {EnableTarget(filename_, O_RDONLY)})
+ .ValueOrDie();
+ }
+ TempPath tmp_dir_;
+ TempPath file_;
+ std::string verity_dir_;
+ std::string filename_;
+};
+
+GlobalState& GetGlobalState() {
+ // This gets created only once throughout the lifetime of the process.
+ // Use a dynamically allocated object (that is never deleted) to avoid order
+ // of destruction of static storage variables issues.
+ static GlobalState* const state =
+ // The actual file size is the maximum random seek range (kFileSize) + the
+ // maximum read size so we can read that number of bytes at the end of the
+ // file.
+ new GlobalState();
+ return *state;
+}
+
+void BM_VerityRandRead(benchmark::State& state) {
+ const int size = state.range(0);
+
+ GlobalState& global_state = GetGlobalState();
+ FileDescriptor verity_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(
+ JoinPath(global_state.verity_dir_, global_state.filename_), O_RDONLY));
+ std::vector<char> buf(size);
+
+ unsigned int seed = 1;
+ for (auto _ : state) {
+ TEST_CHECK(PreadFd(verity_fd.get(), buf.data(), buf.size(),
+ rand_r(&seed) % kFileSize) == size);
+ }
+
+ state.SetBytesProcessed(static_cast<int64_t>(size) *
+ static_cast<int64_t>(state.iterations()));
+}
+
+BENCHMARK(BM_VerityRandRead)->Range(1, kMaxRead)->UseRealTime();
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor
diff --git a/test/perf/linux/verity_read_benchmark.cc b/test/perf/linux/verity_read_benchmark.cc
new file mode 100644
index 000000000..738b5ba45
--- /dev/null
+++ b/test/perf/linux/verity_read_benchmark.cc
@@ -0,0 +1,69 @@
+// Copyright 2021 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 <fcntl.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "benchmark/benchmark.h"
+#include "test/util/capability_util.h"
+#include "test/util/fs_util.h"
+#include "test/util/logging.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+#include "test/util/verity_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+void BM_VerityRead(benchmark::State& state) {
+ const int size = state.range(0);
+ const std::string contents(size, 0);
+
+ // Mount a tmpfs file system to be wrapped by a verity fs.
+ TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+ TEST_CHECK(mount("", dir.path().c_str(), "tmpfs", 0, "") == 0);
+
+ auto path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
+ dir.path(), contents, TempPath::kDefaultFileMode));
+ std::string filename = std::string(Basename(path.path()));
+
+ std::string verity_dir = TEST_CHECK_NO_ERRNO_AND_VALUE(
+ MountVerity(dir.path(), {EnableTarget(filename, O_RDONLY)}));
+
+ FileDescriptor fd =
+ ASSERT_NO_ERRNO_AND_VALUE(Open(JoinPath(verity_dir, filename), O_RDONLY));
+ std::vector<char> buf(size);
+ for (auto _ : state) {
+ TEST_CHECK(PreadFd(fd.get(), buf.data(), buf.size(), 0) == size);
+ }
+
+ state.SetBytesProcessed(static_cast<int64_t>(size) *
+ static_cast<int64_t>(state.iterations()));
+}
+
+BENCHMARK(BM_VerityRead)->Range(1, 1 << 26)->UseRealTime();
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor
diff --git a/test/perf/linux/verity_stat_benchmark.cc b/test/perf/linux/verity_stat_benchmark.cc
new file mode 100644
index 000000000..b43a9e266
--- /dev/null
+++ b/test/perf/linux/verity_stat_benchmark.cc
@@ -0,0 +1,84 @@
+// Copyright 2021 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/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "absl/strings/str_cat.h"
+#include "benchmark/benchmark.h"
+#include "test/util/fs_util.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+#include "test/util/verity_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+// Creates a file in a nested directory hierarchy at least `depth` directories
+// deep, and stats that file multiple times.
+void BM_VerityStat(benchmark::State& state) {
+ // Create nested directories with given depth.
+ int depth = state.range(0);
+
+ // Mount a tmpfs file system to be wrapped by a verity fs.
+ TempPath top_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+ TEST_CHECK(mount("", top_dir.path().c_str(), "tmpfs", 0, "") == 0);
+ std::string dir_path = top_dir.path();
+ std::string child_path = "";
+ std::vector<EnableTarget> targets;
+
+ while (depth-- > 0) {
+ // Don't use TempPath because it will make paths too long to use.
+ //
+ // The top_dir destructor will clean up this whole tree.
+ dir_path = JoinPath(dir_path, absl::StrCat(depth));
+ ASSERT_NO_ERRNO(Mkdir(dir_path, 0755));
+ child_path = JoinPath(child_path, Basename(dir_path));
+ targets.emplace_back(EnableTarget(child_path, O_RDONLY));
+ }
+
+ // Create the file that will be stat'd.
+ const TempPath file =
+ ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir_path));
+
+ targets.emplace_back(
+ EnableTarget(JoinPath(child_path, Basename(file.path())), O_RDONLY));
+
+ // Reverse the targets because verity should be enabled from the lowest level.
+ std::reverse(targets.begin(), targets.end());
+
+ std::string verity_dir =
+ TEST_CHECK_NO_ERRNO_AND_VALUE(MountVerity(top_dir.path(), targets));
+
+ struct stat st;
+ for (auto _ : state) {
+ ASSERT_THAT(stat(JoinPath(verity_dir, targets[0].path).c_str(), &st),
+ SyscallSucceeds());
+ }
+}
+
+BENCHMARK(BM_VerityStat)->Range(1, 100)->UseRealTime();
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-11 12:16:52 +0000