87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
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// Copyright 2018 Google LLC
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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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// This is a very simple sanity test to validate that the sysinfo syscall is
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// supported by gvisor and returns sane values.
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#include <sys/syscall.h>
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#include <sys/sysinfo.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "gtest/gtest.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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TEST(SysinfoTest, SysinfoIsCallable) {
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struct sysinfo ignored = {};
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EXPECT_THAT(syscall(SYS_sysinfo, &ignored), SyscallSucceedsWithValue(0));
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}
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TEST(SysinfoTest, EfaultProducedOnBadAddress) {
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// Validate that we return EFAULT when a bad address is provided.
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// specified by man 2 sysinfo
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EXPECT_THAT(syscall(SYS_sysinfo, nullptr), SyscallFailsWithErrno(EFAULT));
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}
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TEST(SysinfoTest, TotalRamSaneValue) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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EXPECT_GT(s.totalram, 0);
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}
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TEST(SysinfoTest, MemunitSet) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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EXPECT_GE(s.mem_unit, 1);
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}
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TEST(SysinfoTest, UptimeSaneValue) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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EXPECT_GE(s.uptime, 0);
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}
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TEST(SysinfoTest, UptimeIncreasingValue) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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absl::SleepFor(absl::Seconds(2));
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struct sysinfo s2 = {};
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EXPECT_THAT(sysinfo(&s2), SyscallSucceedsWithValue(0));
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EXPECT_LT(s.uptime, s2.uptime);
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}
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TEST(SysinfoTest, FreeRamSaneValue) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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EXPECT_GT(s.freeram, 0);
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EXPECT_LT(s.freeram, s.totalram);
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}
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TEST(SysinfoTest, NumProcsSaneValue) {
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struct sysinfo s = {};
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EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0));
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EXPECT_GT(s.procs, 0);
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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