github.com/tompao/docker@v1.9.1/daemon/delete.go (about) 1 package daemon 2 3 import ( 4 "fmt" 5 "os" 6 "path" 7 8 "github.com/Sirupsen/logrus" 9 derr "github.com/docker/docker/errors" 10 "github.com/docker/docker/volume/store" 11 ) 12 13 // ContainerRmConfig is a holder for passing in runtime config. 14 type ContainerRmConfig struct { 15 ForceRemove, RemoveVolume, RemoveLink bool 16 } 17 18 // ContainerRm removes the container id from the filesystem. An error 19 // is returned if the container is not found, or if the remove 20 // fails. If the remove succeeds, the container name is released, and 21 // network links are removed. 22 func (daemon *Daemon) ContainerRm(name string, config *ContainerRmConfig) error { 23 container, err := daemon.Get(name) 24 if err != nil { 25 return err 26 } 27 28 if config.RemoveLink { 29 name, err := GetFullContainerName(name) 30 if err != nil { 31 return err 32 } 33 parent, n := path.Split(name) 34 if parent == "/" { 35 return derr.ErrorCodeDefaultName 36 } 37 pe := daemon.containerGraph().Get(parent) 38 if pe == nil { 39 return derr.ErrorCodeNoParent.WithArgs(parent, name) 40 } 41 42 if err := daemon.containerGraph().Delete(name); err != nil { 43 return err 44 } 45 46 parentContainer, _ := daemon.Get(pe.ID()) 47 if parentContainer != nil { 48 if err := parentContainer.updateNetwork(); err != nil { 49 logrus.Debugf("Could not update network to remove link %s: %v", n, err) 50 } 51 } 52 53 return nil 54 } 55 56 if err := daemon.rm(container, config.ForceRemove); err != nil { 57 // return derr.ErrorCodeCantDestroy.WithArgs(name, utils.GetErrorMessage(err)) 58 return err 59 } 60 61 if err := container.removeMountPoints(config.RemoveVolume); err != nil { 62 logrus.Error(err) 63 } 64 65 return nil 66 } 67 68 // Destroy unregisters a container from the daemon and cleanly removes its contents from the filesystem. 69 func (daemon *Daemon) rm(container *Container, forceRemove bool) (err error) { 70 if container.IsRunning() { 71 if !forceRemove { 72 return derr.ErrorCodeRmRunning 73 } 74 if err := container.Kill(); err != nil { 75 return derr.ErrorCodeRmFailed.WithArgs(err) 76 } 77 } 78 79 // Container state RemovalInProgress should be used to avoid races. 80 if err = container.setRemovalInProgress(); err != nil { 81 if err == derr.ErrorCodeAlreadyRemoving { 82 // do not fail when the removal is in progress started by other request. 83 return nil 84 } 85 return derr.ErrorCodeRmState.WithArgs(err) 86 } 87 defer container.resetRemovalInProgress() 88 89 // stop collection of stats for the container regardless 90 // if stats are currently getting collected. 91 daemon.statsCollector.stopCollection(container) 92 93 if err = container.Stop(3); err != nil { 94 return err 95 } 96 97 // Mark container dead. We don't want anybody to be restarting it. 98 container.setDead() 99 100 // Save container state to disk. So that if error happens before 101 // container meta file got removed from disk, then a restart of 102 // docker should not make a dead container alive. 103 if err := container.toDiskLocking(); err != nil { 104 logrus.Errorf("Error saving dying container to disk: %v", err) 105 } 106 107 // If force removal is required, delete container from various 108 // indexes even if removal failed. 109 defer func() { 110 if err != nil && forceRemove { 111 daemon.idIndex.Delete(container.ID) 112 daemon.containers.Delete(container.ID) 113 os.RemoveAll(container.root) 114 container.logEvent("destroy") 115 } 116 }() 117 118 if _, err := daemon.containerGraphDB.Purge(container.ID); err != nil { 119 logrus.Debugf("Unable to remove container from link graph: %s", err) 120 } 121 122 if err = daemon.driver.Remove(container.ID); err != nil { 123 return derr.ErrorCodeRmDriverFS.WithArgs(daemon.driver, container.ID, err) 124 } 125 126 initID := fmt.Sprintf("%s-init", container.ID) 127 if err := daemon.driver.Remove(initID); err != nil { 128 return derr.ErrorCodeRmInit.WithArgs(daemon.driver, initID, err) 129 } 130 131 if err = os.RemoveAll(container.root); err != nil { 132 return derr.ErrorCodeRmFS.WithArgs(container.ID, err) 133 } 134 135 if err = daemon.execDriver.Clean(container.ID); err != nil { 136 return derr.ErrorCodeRmExecDriver.WithArgs(container.ID, err) 137 } 138 139 selinuxFreeLxcContexts(container.ProcessLabel) 140 daemon.idIndex.Delete(container.ID) 141 daemon.containers.Delete(container.ID) 142 143 container.logEvent("destroy") 144 return nil 145 } 146 147 // VolumeRm removes the volume with the given name. 148 // If the volume is referenced by a container it is not removed 149 // This is called directly from the remote API 150 func (daemon *Daemon) VolumeRm(name string) error { 151 v, err := daemon.volumes.Get(name) 152 if err != nil { 153 return err 154 } 155 if err := daemon.volumes.Remove(v); err != nil { 156 if err == store.ErrVolumeInUse { 157 return derr.ErrorCodeRmVolumeInUse.WithArgs(err) 158 } 159 return derr.ErrorCodeRmVolume.WithArgs(name, err) 160 } 161 return nil 162 }