93 lines
2.8 KiB
Go
93 lines
2.8 KiB
Go
package main
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import (
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"fmt"
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"github.com/containers/libpod/cmd/podman/cliconfig"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/libpod"
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"github.com/containers/storage"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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var (
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umountCommand cliconfig.UmountValues
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description = `Container storage increments a mount counter each time a container is mounted.
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When a container is unmounted, the mount counter is decremented. The container's root filesystem is physically unmounted only when the mount counter reaches zero indicating no other processes are using the mount.
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An unmount can be forced with the --force flag.
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`
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_umountCommand = &cobra.Command{
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Use: "umount [flags] CONTAINER [CONTAINER...]",
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Aliases: []string{"unmount"},
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Short: "Unmounts working container's root filesystem",
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Long: description,
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RunE: func(cmd *cobra.Command, args []string) error {
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umountCommand.InputArgs = args
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umountCommand.GlobalFlags = MainGlobalOpts
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return umountCmd(&umountCommand)
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},
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Args: func(cmd *cobra.Command, args []string) error {
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return checkAllAndLatest(cmd, args, false)
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},
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Example: `podman umount ctrID
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podman umount ctrID1 ctrID2 ctrID3
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podman umount --all`,
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}
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)
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func init() {
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umountCommand.Command = _umountCommand
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umountCommand.SetHelpTemplate(HelpTemplate())
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umountCommand.SetUsageTemplate(UsageTemplate())
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flags := umountCommand.Flags()
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flags.BoolVarP(&umountCommand.All, "all", "a", false, "Umount all of the currently mounted containers")
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flags.BoolVarP(&umountCommand.Force, "force", "f", false, "Force the complete umount all of the currently mounted containers")
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flags.BoolVarP(&umountCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
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markFlagHiddenForRemoteClient("latest", flags)
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}
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func umountCmd(c *cliconfig.UmountValues) error {
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runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
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if err != nil {
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return errors.Wrapf(err, "could not get runtime")
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}
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defer runtime.Shutdown(false)
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force := c.Force
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umountAll := c.All
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containers, err := getAllOrLatestContainers(&c.PodmanCommand, runtime, -1, "all")
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if err != nil {
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if len(containers) == 0 {
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return err
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}
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fmt.Println(err.Error())
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}
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umountContainerErrStr := "error unmounting container"
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var lastError error
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for _, ctr := range containers {
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ctrState, err := ctr.State()
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if ctrState == libpod.ContainerStateRunning || err != nil {
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continue
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}
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if err = ctr.Unmount(force); err != nil {
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if umountAll && errors.Cause(err) == storage.ErrLayerNotMounted {
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continue
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}
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if lastError != nil {
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logrus.Error(lastError)
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}
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lastError = errors.Wrapf(err, "%s %s", umountContainerErrStr, ctr.ID())
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continue
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}
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fmt.Printf("%s\n", ctr.ID())
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}
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return lastError
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}
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