func (d *Driver) create(id, parent, mountLabel string, readOnly bool, storageOpt map[string]string) error {
rPId, err := d.resolveID(parent)
if err != nil {
return err
}
parentChain, err := d.getLayerChain(rPId)
if err != nil {
return err
}
var layerChain []string
if rPId != "" {
parentPath, err := hcsshim.GetLayerMountPath(d.info, rPId)
if err != nil {
return err
}
if _, err := os.Stat(filepath.Join(parentPath, "Files")); err == nil {
// This is a legitimate parent layer (not the empty "-init" layer),
// so include it in the layer chain.
layerChain = []string{parentPath}
}
}
layerChain = append(layerChain, parentChain...)
if readOnly {
if err := hcsshim.CreateLayer(d.info, id, rPId); err != nil {
return err
}
} else {
var parentPath string
if len(layerChain) != 0 {
parentPath = layerChain[0]
}
if err := hcsshim.CreateSandboxLayer(d.info, id, parentPath, layerChain); err != nil {
return err
}
storageOptions, err := parseStorageOpt(storageOpt)
if err != nil {
return fmt.Errorf("Failed to parse storage options - %s", err)
}
if storageOptions.size != 0 {
if err := hcsshim.ExpandSandboxSize(d.info, id, storageOptions.size); err != nil {
return err
}
}
}
if _, err := os.Lstat(d.dir(parent)); err != nil {
if err2 := hcsshim.DestroyLayer(d.info, id); err2 != nil {
logrus.Warnf("Failed to DestroyLayer %s: %s", id, err2)
}
return fmt.Errorf("Cannot create layer with missing parent %s: %s", parent, err)
}
if err := d.setLayerChain(id, layerChain); err != nil {
if err2 := hcsshim.DestroyLayer(d.info, id); err2 != nil {
logrus.Warnf("Failed to DestroyLayer %s: %s", id, err2)
}
return err
}
return nil
}
func (d *Driver) create(id, parent, mountLabel string, readOnly bool, storageOpt map[string]string) error {
rPId, err := d.resolveID(parent)
if err != nil {
return err
}
parentChain, err := d.getLayerChain(rPId)
if err != nil {
return err
}
var layerChain []string
if rPId != "" {
parentPath, err := hcsshim.GetLayerMountPath(d.info, rPId)
if err != nil {
return err
}
if _, err := os.Stat(filepath.Join(parentPath, "Files")); err == nil {
// This is a legitimate parent layer (not the empty "-init" layer),
// so include it in the layer chain.
layerChain = []string{parentPath}
}
}
layerChain = append(layerChain, parentChain...)
if readOnly {
if err := hcsshim.CreateLayer(d.info, id, rPId); err != nil {
return err
}
} else {
var parentPath string
if len(layerChain) != 0 {
parentPath = layerChain[0]
}
if isTP5OrOlder() {
// Pre-create the layer directory, providing an ACL to give the Hyper-V Virtual Machines
// group access. This is necessary to ensure that Hyper-V containers can access the
// virtual machine data. This is not necessary post-TP5.
path, err := syscall.UTF16FromString(filepath.Join(d.info.HomeDir, id))
if err != nil {
return err
}
// Give system and administrators full control, and VMs read, write, and execute.
// Mark these ACEs as inherited.
sd, err := winio.SddlToSecurityDescriptor("D:(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;FRFWFX;;;S-1-5-83-0)")
if err != nil {
return err
}
err = syscall.CreateDirectory(&path[0], &syscall.SecurityAttributes{
Length: uint32(unsafe.Sizeof(syscall.SecurityAttributes{})),
SecurityDescriptor: uintptr(unsafe.Pointer(&sd[0])),
})
if err != nil {
return err
}
}
if err := hcsshim.CreateSandboxLayer(d.info, id, parentPath, layerChain); err != nil {
return err
}
storageOptions, err := parseStorageOpt(storageOpt)
if err != nil {
return fmt.Errorf("Failed to parse storage options - %s", err)
}
if hcsSandboxSizeSupported {
if err := hcsshim.ExpandSandboxSize(d.info, id, storageOptions.size); err != nil {
return err
}
}
}
if _, err := os.Lstat(d.dir(parent)); err != nil {
if err2 := hcsshim.DestroyLayer(d.info, id); err2 != nil {
logrus.Warnf("Failed to DestroyLayer %s: %s", id, err2)
}
return fmt.Errorf("Cannot create layer with missing parent %s: %s", parent, err)
}
if err := d.setLayerChain(id, layerChain); err != nil {
if err2 := hcsshim.DestroyLayer(d.info, id); err2 != nil {
logrus.Warnf("Failed to DestroyLayer %s: %s", id, err2)
}
return err
}
return nil
}