Handle tmpfs with 5 fields in /proc/mounts parsing.

PiperOrigin-RevId: 370565903

1 files changed, 47 insertions, 0 deletions

diff --git a/test/util/mount_util_test.cc b/test/util/mount_util_test.cc
new file mode 100644
index 000000000..2bcb6cc43
--- /dev/null
+++ b/test/util/mount_util_test.cc
@@ -0,0 +1,47 @@
+// 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 "test/util/mount_util.h"
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+TEST(ParseMounts, Mounts) {
+  auto entries = ASSERT_NO_ERRNO_AND_VALUE(ProcSelfMountsEntriesFrom(
+      R"proc(sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
+proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
+ /mnt tmpfs rw,noexec 0 0
+)proc"));
+  EXPECT_EQ(entries.size(), 3);
+}
+
+TEST(ParseMounts, MountInfo) {
+  auto entries = ASSERT_NO_ERRNO_AND_VALUE(ProcSelfMountInfoEntriesFrom(
+      R"proc(22 28 0:20 / /sys rw,relatime shared:7 - sysfs sysfs rw
+23 28 0:21 / /proc rw,relatime shared:14 - proc proc rw
+2007 8844 0:278 / /mnt rw,noexec - tmpfs  rw,mode=123,uid=268601820,gid=5000
+)proc"));
+  EXPECT_EQ(entries.size(), 3);
+}
+
+}  // namespace
+
+}  // namespace testing
+}  // namespace gvisor