123 lines
2.9 KiB
Go
123 lines
2.9 KiB
Go
package main
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import (
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js "encoding/json"
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"fmt"
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"github.com/pkg/errors"
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of "github.com/projectatomic/libpod/cmd/podman/formats"
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"github.com/projectatomic/libpod/cmd/podman/libpodruntime"
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"github.com/urfave/cli"
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)
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var (
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mountDescription = `
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podman mount
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Lists all mounted containers mount points
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podman mount CONTAINER-NAME-OR-ID
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Mounts the specified container and outputs the mountpoint
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`
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mountFlags = []cli.Flag{
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cli.BoolFlag{
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Name: "notruncate",
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Usage: "do not truncate output",
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},
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cli.StringFlag{
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Name: "format",
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Usage: "Change the output format to Go template",
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},
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}
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mountCommand = cli.Command{
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Name: "mount",
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Usage: "Mount a working container's root filesystem",
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Description: mountDescription,
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Action: mountCmd,
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ArgsUsage: "[CONTAINER-NAME-OR-ID]",
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Flags: mountFlags,
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}
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)
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// jsonMountPoint stores info about each container
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type jsonMountPoint struct {
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ID string `json:"id"`
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Names []string `json:"names"`
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MountPoint string `json:"mountpoint"`
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}
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func mountCmd(c *cli.Context) error {
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if err := validateFlags(c, mountFlags); err != nil {
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return err
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}
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runtime, err := libpodruntime.GetRuntime(c)
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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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formats := map[string]bool{
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"": true,
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of.JSONString: true,
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}
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args := c.Args()
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json := c.String("format") == of.JSONString
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if !formats[c.String("format")] {
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return errors.Errorf("%q is not a supported format", c.String("format"))
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}
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if len(args) > 1 {
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return errors.Errorf("too many arguments specified")
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}
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if len(args) == 1 {
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if json {
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return errors.Wrapf(err, "json option can not be used with a container id")
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}
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ctr, err := runtime.LookupContainer(args[0])
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if err != nil {
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return errors.Wrapf(err, "error looking up container %q", args[0])
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}
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mountPoint, err := ctr.Mount()
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if err != nil {
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return errors.Wrapf(err, "error mounting container %q", ctr.ID())
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}
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fmt.Printf("%s\n", mountPoint)
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} else {
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jsonMountPoints := []jsonMountPoint{}
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containers, err2 := runtime.GetContainers()
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if err2 != nil {
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return errors.Wrapf(err2, "error reading list of all containers")
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}
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for _, container := range containers {
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mountPoint, err := container.Mountpoint()
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if err != nil {
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return errors.Wrapf(err, "error getting mountpoint for %q", container.ID())
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}
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if mountPoint == "" {
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continue
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}
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if json {
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jsonMountPoints = append(jsonMountPoints, jsonMountPoint{ID: container.ID(), Names: []string{container.Name()}, MountPoint: mountPoint})
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continue
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}
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if c.Bool("notruncate") {
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fmt.Printf("%-64s %s\n", container.ID(), mountPoint)
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} else {
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fmt.Printf("%-12.12s %s\n", container.ID(), mountPoint)
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}
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}
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if json {
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data, err := js.MarshalIndent(jsonMountPoints, "", " ")
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if err != nil {
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return err
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}
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fmt.Printf("%s\n", data)
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}
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}
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return nil
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}
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