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// 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 <fcntl.h>
#include <linux/magic.h>
#include <sys/statfs.h>
#include <unistd.h>
#include "gtest/gtest.h"
#include "test/util/file_descriptor.h"
#include "test/util/temp_path.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
namespace {
TEST(StatfsTest, CannotStatBadPath) {
auto temp_file = NewTempAbsPath();
struct statfs st;
EXPECT_THAT(statfs(temp_file.c_str(), &st), SyscallFailsWithErrno(ENOENT));
}
TEST(StatfsTest, TempPath) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
struct statfs st;
EXPECT_THAT(statfs(temp_file.path().c_str(), &st), SyscallSucceeds());
EXPECT_GT(st.f_namelen, 0);
}
TEST(StatfsTest, InternalDevShm) {
struct statfs st;
EXPECT_THAT(statfs("/dev/shm", &st), SyscallSucceeds());
EXPECT_GT(st.f_namelen, 0);
// This assumes that /dev/shm is tmpfs.
// Note: We could be an overlay on some configurations.
EXPECT_TRUE(st.f_type == TMPFS_MAGIC || st.f_type == OVERLAYFS_SUPER_MAGIC);
}
TEST(FstatfsTest, CannotStatBadFd) {
struct statfs st;
EXPECT_THAT(fstatfs(-1, &st), SyscallFailsWithErrno(EBADF));
}
TEST(FstatfsTest, TempPath) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
const FileDescriptor fd =
ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY));
struct statfs st;
EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds());
EXPECT_GT(st.f_namelen, 0);
}
TEST(FstatfsTest, CanStatFileWithOpath) {
SKIP_IF(IsRunningWithVFS1());
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
const FileDescriptor fd =
ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_PATH));
struct statfs st;
EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds());
}
TEST(FstatfsTest, InternalDevShm) {
auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
const FileDescriptor fd =
ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/shm", O_RDONLY));
struct statfs st;
EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds());
EXPECT_GT(st.f_namelen, 0);
// This assumes that /dev/shm is tmpfs.
// Note: We could be an overlay on some configurations.
EXPECT_TRUE(st.f_type == TMPFS_MAGIC || st.f_type == OVERLAYFS_SUPER_MAGIC);
}
} // namespace
} // namespace testing
} // namespace gvisor
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