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moby--moby/volume/lcow_parser.go
Sebastiaan van Stijn 7cb96ba308
Re-validate Mounts on container start
Validation of Mounts was only performed on container _creation_, not on
container _start_. As a result, if the host-path no longer existed
when the container was started, a directory was created in the given
location.

This is the wrong behavior, because when using the `Mounts` API, host paths
should never be created, and an error should be produced instead.

This patch adds a validation step on container start, and produces an
error if the host path is not found.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2017-12-19 11:44:29 +01:00

35 lines
949 B
Go

package volume
import (
"errors"
"fmt"
"path"
"github.com/docker/docker/api/types/mount"
)
var lcowSpecificValidators mountValidator = func(m *mount.Mount) error {
if path.Clean(m.Target) == "/" {
return fmt.Errorf("invalid specification: destination can't be '/'")
}
if m.Type == mount.TypeNamedPipe {
return errors.New("Linux containers on Windows do not support named pipe mounts")
}
return nil
}
type lcowParser struct {
windowsParser
}
func (p *lcowParser) ValidateMountConfig(mnt *mount.Mount) error {
return p.validateMountConfigReg(mnt, rxLCOWDestination, lcowSpecificValidators)
}
func (p *lcowParser) ParseMountRaw(raw, volumeDriver string) (*MountPoint, error) {
return p.parseMountRaw(raw, volumeDriver, rxLCOWDestination, false, lcowSpecificValidators)
}
func (p *lcowParser) ParseMountSpec(cfg mount.Mount) (*MountPoint, error) {
return p.parseMountSpec(cfg, rxLCOWDestination, false, lcowSpecificValidators)
}