// 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 <sys/klog.h> #include <sys/syscall.h> #include <unistd.h> #include "gtest/gtest.h" #include "test/util/test_util.h" namespace gvisor { namespace testing { namespace { constexpr int SYSLOG_ACTION_READ_ALL = 3; constexpr int SYSLOG_ACTION_SIZE_BUFFER = 10; int Syslog(int type, char* buf, int len) { return syscall(__NR_syslog, type, buf, len); } // Only SYSLOG_ACTION_SIZE_BUFFER and SYSLOG_ACTION_READ_ALL are implemented in // gVisor. TEST(Syslog, Size) { EXPECT_THAT(Syslog(SYSLOG_ACTION_SIZE_BUFFER, nullptr, 0), SyscallSucceeds()); } TEST(Syslog, ReadAll) { // There might not be anything to read, so we can't check the write count. char buf[100]; EXPECT_THAT(Syslog(SYSLOG_ACTION_READ_ALL, buf, sizeof(buf)), SyscallSucceeds()); } } // namespace } // namespace testing } // namespace gvisor