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