1 // 2 // Copyright (C) 2015 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 18 #include <base/command_line.h> 19 #include <base/logging.h> 20 #include <brillo/syslog_logging.h> 21 #include "dhcp_client/daemon.h" 22 23 using std::vector; 24 25 namespace { 26 27 namespace switches { 28 29 // Don't daemon()ize; run in foreground. 30 const char kForeground[] = "foreground"; 31 // Flag to show the help message. 32 const char kHelp[] = "help"; 33 // The help message shown if help flag is passed to the program. 34 const char kHelpMessage[] = "\n help message \n"; 35 36 } // namespace switches 37 38 } // namespace 39 40 // Always logs to the syslog and logs to stderr if 41 // we are running in the foreground. 42 void SetupLogging(bool foreground, 43 const char* daemon_name) { 44 int log_flags = 0; 45 log_flags |= brillo::kLogToSyslog; 46 log_flags |= brillo::kLogHeader; 47 if (foreground) { 48 log_flags |= brillo::kLogToStderr; 49 } 50 brillo::InitLog(log_flags); 51 } 52 53 void OnStartup(const char* daemon_name, base::CommandLine* cl) { 54 LOG(INFO) << __func__; 55 SetupLogging(cl->HasSwitch(switches::kForeground), daemon_name); 56 return; 57 } 58 59 int main(int argc, char* argv[]) { 60 base::CommandLine::Init(argc, argv); 61 base::CommandLine* cl = base::CommandLine::ForCurrentProcess(); 62 63 if (cl->HasSwitch(switches::kHelp)) { 64 LOG(INFO) << switches::kHelpMessage; 65 return 0; 66 } 67 68 dhcp_client::Daemon daemon(base::Bind(&OnStartup, argv[0], cl)); 69 70 daemon.Run(); 71 72 return 0; 73 } 74
