// Merge guest volume/block device configuration with any volumes found in
// host container.
func mergeVolumeConfig(volumeconfig []volumeConfig, guest *gabs.Container) (err error) {
var mounts *gabs.Container
if guest.ExistsP("mount") {
mounts = guest.S("mount")
} else {
mounts, _ = guest.ObjectP("mount")
}
mmap, _ := mounts.ChildrenMap()
for _, mount := range mmap {
var source string
var path string
var ok bool
if source, ok = mount.Path("source").Data().(string); !ok {
continue
}
if path, ok = mount.Path("path").Data().(string); !ok {
continue
}
if source == "blk" && strings.HasPrefix(path, "/dev/ld") {
return fmt.Errorf("Guest configuration defines " +
"/dev/ld* block devices, cannot merge with " +
"host volumes")
}
}
blkIndex := 0
for _, v := range volumeconfig {
mp := "/" + v.name
obj, _ := guest.Object("mount", mp)
obj.Set("blk", "source")
obj.Set(fmt.Sprintf("/dev/ld%va", blkIndex), "path")
blkIndex += 1
}
return
}