| 129 | } |
| 130 | |
| 131 | func (s *bcacheStore) startServer() (err error) { |
| 132 | // create socket dir |
| 133 | os.MkdirAll(filepath.Dir(UnixSocketPath), FilePerm) |
| 134 | |
| 135 | unixSocketLockFile, err = os.OpenFile(UnixSocketLock, os.O_CREATE|os.O_RDWR, 0o666) |
| 136 | if err != nil { |
| 137 | return errors.New(fmt.Sprintf("Error: creating lock file %s", UnixSocketLock)) |
| 138 | } |
| 139 | |
| 140 | err = syscall.Flock(int(unixSocketLockFile.Fd()), syscall.LOCK_EX|syscall.LOCK_NB) |
| 141 | if err != nil { |
| 142 | return errors.New(fmt.Sprintf("Error: acquire flock of %s failed, maybe server exists", UnixSocketLock)) |
| 143 | } |
| 144 | |
| 145 | if _, err := os.Stat(UnixSocketPath); err == nil { |
| 146 | os.Remove(UnixSocketPath) |
| 147 | } |
| 148 | |
| 149 | s.stopC = make(chan struct{}) |
| 150 | ln, err := net.Listen("unix", UnixSocketPath) |
| 151 | if err != nil { |
| 152 | panic(err) |
| 153 | } |
| 154 | go func(stopC chan struct{}) { |
| 155 | defer ln.Close() |
| 156 | for { |
| 157 | conn, err := ln.Accept() |
| 158 | select { |
| 159 | case <-stopC: |
| 160 | return |
| 161 | default: |
| 162 | } |
| 163 | if err != nil { |
| 164 | continue |
| 165 | } |
| 166 | go s.serveConn(conn, stopC) |
| 167 | } |
| 168 | }(s.stopC) |
| 169 | |
| 170 | log.LogInfof("start blockcache server.") |
| 171 | return |
| 172 | } |
| 173 | |
| 174 | func (s *bcacheStore) stopServer() { |
| 175 | if s.stopC != nil { |