// 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)
}
}
func main() {
logger := lager.NewLogger("initd")
socketPath := flag.String("socket", "/run/initd.sock", "path to listen for spawn requests on")
//unmountPath := flag.String("unmountAfterListening", "/run", "directory to unmount after succesfully listening on -socketPath")
flag.String("unmountAfterListening", "/run", "directory to unmount after succesfully listening on -socketPath")
flag.Parse()
reaper := system.StartReaper(logger)
defer reaper.Stop()
listener, err := unix_socket.NewListenerFromPath(*socketPath)
if err != nil {
fmt.Printf("open %s: %s", *socketPath, err)
os.Exit(1)
}
daemon := &container_daemon.ContainerDaemon{
CmdPreparer: &container_daemon.ProcessSpecPreparer{
Users: container_daemon.LibContainerUser{},
AlwaysDropCapabilities: false,
},
Spawner: &container_daemon.Spawn{
Runner: reaper,
PTY: system.KrPty,
},
}
// unmount the bind-mounted socket volume now we've started listening
// if err := syscall.Unmount(*unmountPath, syscall.MNT_DETACH); err != nil {
// fmt.Printf("unmount %s: %s", *unmountPath, err)
// os.Exit(2)
// }
if err := daemon.Run(listener); err != nil {
fmt.Sprintf("run daemon: %s", err)
os.Exit(1)
}
}
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gbytes"
)
var _ = Describe("ProcessReaper", func() {
var reaper *system.ProcessReaper
var waitFunc system.Wait4Func
BeforeEach(func() {
waitFunc = syscall.Wait4
})
JustBeforeEach(func() {
logger := lager.NewLogger("process_reaper_test_logger")
logger.RegisterSink(lager.NewWriterSink(GinkgoWriter, lager.ERROR))
reaper = system.StartReaper(logger, waitFunc)
})
AfterEach(func() {
reaper.Stop()
})
It("waits for a process to return and returns its exit status", func() {
cmd := exec.Command("sh", "-c", "exit 3")
Expect(reaper.Start(cmd)).To(Succeed())
Expect(reaper.Wait(cmd)).To(Equal(byte(3)))
})
It("waits for multiple processes", func() {
cmd1 := exec.Command("sh", "-c", "exit 3")
"github.com/cloudfoundry-incubator/garden-linux/containerizer/system"
"github.com/pivotal-golang/lager"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gbytes"
)
var _ = Describe("ProcessReaper", func() {
var reaper *system.ProcessReaper
BeforeEach(func() {
logger := lager.NewLogger("process_reaper_test_logger")
logger.RegisterSink(lager.NewWriterSink(GinkgoWriter, lager.ERROR))
reaper = system.StartReaper(logger)
})
AfterEach(func() {
reaper.Stop()
})
It("waits for a process to return and returns its exit status", func() {
cmd := exec.Command("sh", "-c", "exit 3")
Expect(reaper.Start(cmd)).To(Succeed())
Expect(reaper.Wait(cmd)).To(Equal(byte(3)))
})
It("waits for multiple processes", func() {
cmd1 := exec.Command("sh", "-c", "exit 3")