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moby--moby/daemon/create_unix.go
Alexander Morozov 6bca8ec3c9 Replace GenerateRandomID with GenerateNonCryptoID
This allow us to avoid entropy usage in non-crypto critical places.

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2015-07-28 22:31:01 -07:00

60 lines
1.5 KiB
Go

// +build !windows
package daemon
import (
"fmt"
"os"
"path/filepath"
"strings"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/runconfig"
"github.com/opencontainers/runc/libcontainer/label"
)
// createContainerPlatformSpecificSettings performs platform specific container create functionality
func createContainerPlatformSpecificSettings(container *Container, config *runconfig.Config) error {
for spec := range config.Volumes {
var (
name, destination string
parts = strings.Split(spec, ":")
)
switch len(parts) {
case 2:
name, destination = parts[0], filepath.Clean(parts[1])
default:
name = stringid.GenerateNonCryptoID()
destination = filepath.Clean(parts[0])
}
// Skip volumes for which we already have something mounted on that
// destination because of a --volume-from.
if container.isDestinationMounted(destination) {
continue
}
path, err := container.GetResourcePath(destination)
if err != nil {
return err
}
stat, err := os.Stat(path)
if err == nil && !stat.IsDir() {
return fmt.Errorf("cannot mount volume over existing file, file exists %s", path)
}
v, err := createVolume(name, config.VolumeDriver)
if err != nil {
return err
}
if err := label.Relabel(v.Path(), container.MountLabel, "z"); err != nil {
return err
}
if err := container.copyImagePathContent(v, destination); err != nil {
return err
}
container.addMountPointWithVolume(destination, v, true)
}
return nil
}