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package buildah
import (
"github.com/pkg/errors"
)
// Mount mounts a container's root filesystem in a location which can be
// accessed from the host, and returns the location.
func (b *Builder) Mount(label string) (string, error) {
mountpoint, err := b.store.Mount(b.ContainerID, label)
if err != nil {
return "", errors.Wrapf(err, "error mounting build container %q", b.ContainerID)
}
b.MountPoint = mountpoint
err = b.Save()
if err != nil {
return "", errors.Wrapf(err, "error saving updated state for build container %q", b.ContainerID)
}
return mountpoint, nil
}
func (b *Builder) setMountPoint(mountPoint string) error {
b.MountPoint = mountPoint
if err := b.Save(); err != nil {
return errors.Wrapf(err, "error saving updated state for build container %q", b.ContainerID)
}
return nil
}
// Mounted returns whether the container is mounted or not
func (b *Builder) Mounted() (bool, error) {
mountCnt, err := b.store.Mounted(b.ContainerID)
if err != nil {
return false, errors.Wrapf(err, "error determining if mounting build container %q is mounted", b.ContainerID)
}
mounted := mountCnt > 0
if mounted && b.MountPoint == "" {
ctr, err := b.store.Container(b.ContainerID)
if err != nil {
return mountCnt > 0, errors.Wrapf(err, "error determining if mounting build container %q is mounted", b.ContainerID)
}
layer, err := b.store.Layer(ctr.LayerID)
if err != nil {
return mountCnt > 0, errors.Wrapf(err, "error determining if mounting build container %q is mounted", b.ContainerID)
}
return mounted, b.setMountPoint(layer.MountPoint)
}
if !mounted && b.MountPoint != "" {
return mounted, b.setMountPoint("")
}
return mounted, nil
}
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