// initd listens on a socket, spawns requested processes and reaps their
// exit statuses.
func main() {
defer func() {
if r := recover(); r != nil {
fmt.Fprintf(os.Stderr, "initd: panicked: %s\n", r)
os.Exit(4)
}
}()
dropCaps := flag.Bool("dropCapabilities", false, "drop capabilities before running processes")
flag.Parse()
container_daemon.Detach("/dev/null", "/dev/null")
logger := lager.NewLogger("initd")
syncWriter := os.NewFile(uintptr(4), "/dev/sync_writer")
syscall.RawSyscall(syscall.SYS_FCNTL, uintptr(4), syscall.F_SETFD, syscall.FD_CLOEXEC)
defer syncWriter.Close()
sync := &containerizer.PipeSynchronizer{
Writer: syncWriter,
}
reaper := system.StartReaper(logger)
defer reaper.Stop()
daemon := &container_daemon.ContainerDaemon{
CmdPreparer: &container_daemon.ProcessSpecPreparer{
Users: container_daemon.LibContainerUser{},
Rlimits: &container_daemon.RlimitsManager{},
ProcStarterPath: "/sbin/proc_starter",
AlwaysDropCapabilities: *dropCaps,
},
Spawner: &container_daemon.Spawn{
Runner: reaper,
PTY: system.KrPty,
},
}
socketFile := os.NewFile(uintptr(5), "/dev/host.sock")
listener, err := unix_socket.NewListenerFromFile(socketFile)
if err != nil {
fail(fmt.Sprintf("initd: failed to create listener: %s\n", err), 5)
}
socketFile.Close()
if err := sync.SignalSuccess(); err != nil {
fail(fmt.Sprintf("signal host: %s", err), 6)
}
if err := daemon.Run(listener); err != nil {
fail(fmt.Sprintf("run daemon: %s", err), 7)
}
}
Expect(err).To(HaveOccurred())
socketFile.Close()
})
})
Context("when the file is a socket file", func() {
It("creates the listener", func() {
socketPath := fmt.Sprintf("/tmp/a_socket-%d.sock", GinkgoParallelNode())
socketListener, err := net.Listen("unix", socketPath)
Expect(err).ToNot(HaveOccurred())
socketFile, err := socketListener.(*net.UnixListener).File()
Expect(err).ToNot(HaveOccurred())
listener, err := unix_socket.NewListenerFromFile(socketFile)
Expect(err).ToNot(HaveOccurred())
Expect(socketFile.Close()).To(Succeed())
Expect(listener.Close()).To(Succeed())
})
})
})
})
})
Describe("Connect", func() {
Context("when the server is not running", func() {
It("fails to connect", func() {
_, err := connector.Connect(nil)
Expect(err).To(MatchError(ContainSubstring("unix_socket: connect to server socket")))