github.com/kaisenlinux/docker.io@v0.0.0-20230510090727-ea55db55fac7/engine/libcontainerd/supervisor/remote_daemon_linux.go (about)

     1  package supervisor // import "github.com/docker/docker/libcontainerd/supervisor"
     2  
     3  import (
     4  	"os"
     5  	"path/filepath"
     6  	"syscall"
     7  	"time"
     8  
     9  	"github.com/containerd/containerd/defaults"
    10  	"github.com/docker/docker/pkg/system"
    11  )
    12  
    13  const (
    14  	sockFile      = "containerd.sock"
    15  	debugSockFile = "containerd-debug.sock"
    16  )
    17  
    18  func (r *remote) setDefaults() {
    19  	if r.GRPC.Address == "" {
    20  		r.GRPC.Address = filepath.Join(r.stateDir, sockFile)
    21  	}
    22  	if r.GRPC.MaxRecvMsgSize == 0 {
    23  		r.GRPC.MaxRecvMsgSize = defaults.DefaultMaxRecvMsgSize
    24  	}
    25  	if r.GRPC.MaxSendMsgSize == 0 {
    26  		r.GRPC.MaxSendMsgSize = defaults.DefaultMaxSendMsgSize
    27  	}
    28  	if r.Debug.Address == "" {
    29  		r.Debug.Address = filepath.Join(r.stateDir, debugSockFile)
    30  	}
    31  
    32  	for key, conf := range r.pluginConfs.Plugins {
    33  		if conf == nil {
    34  			r.DisabledPlugins = append(r.DisabledPlugins, key)
    35  			delete(r.pluginConfs.Plugins, key)
    36  		}
    37  	}
    38  }
    39  
    40  func (r *remote) stopDaemon() {
    41  	// Ask the daemon to quit
    42  	syscall.Kill(r.daemonPid, syscall.SIGTERM)
    43  	// Wait up to 15secs for it to stop
    44  	for i := time.Duration(0); i < shutdownTimeout; i += time.Second {
    45  		if !system.IsProcessAlive(r.daemonPid) {
    46  			break
    47  		}
    48  		time.Sleep(time.Second)
    49  	}
    50  
    51  	if system.IsProcessAlive(r.daemonPid) {
    52  		r.logger.WithField("pid", r.daemonPid).Warn("daemon didn't stop within 15 secs, killing it")
    53  		syscall.Kill(r.daemonPid, syscall.SIGKILL)
    54  	}
    55  }
    56  
    57  func (r *remote) killDaemon() {
    58  	// Try to get a stack trace
    59  	syscall.Kill(r.daemonPid, syscall.SIGUSR1)
    60  	<-time.After(100 * time.Millisecond)
    61  	system.KillProcess(r.daemonPid)
    62  }
    63  
    64  func (r *remote) platformCleanup() {
    65  	os.Remove(filepath.Join(r.stateDir, sockFile))
    66  }