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Merge pull request #26676 from Microsoft/jjh/tp5graphdriver

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Windows: Remove TP5 hack from graphdriver
This commit is contained in:
Alexander Morozov 2016-09-17 19:54:58 -07:00 committed by GitHub
commit beea4d93dc
1 changed files with 0 additions and 45 deletions
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45
daemon/graphdriver/windows/windows.go
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@ -30,7 +30,6 @@ import (
"github.com/docker/docker/pkg/ioutils"
"github.com/docker/docker/pkg/longpath"
"github.com/docker/docker/pkg/reexec"
"github.com/docker/docker/pkg/system"
"github.com/docker/go-units"
"github.com/vbatts/tar-split/tar/storage"
)
@ -68,10 +67,6 @@ type Driver struct {
cache map[string]string
}
func isTP5OrOlder() bool {
return system.GetOSVersion().Build <= 14300
}
// InitFilter returns a new Windows storage filter driver.
func InitFilter(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error) {
logrus.Debugf("WindowsGraphDriver InitFilter at %s", home)
@ -200,29 +195,6 @@ func (d *Driver) create(id, parent, mountLabel string, readOnly bool, storageOpt
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
}
@ -596,23 +568,6 @@ func writeLayerFromTar(r archive.Reader, w hcsshim.LayerWriter) (int64, error) {
}
buf.Reset(w)
// Add the Hyper-V Virtual Machine group ACE to the security descriptor
// for TP5 so that Xenons can access all files. This is not necessary
// for post-TP5 builds.
if isTP5OrOlder() {
if sddl, ok := hdr.Winheaders["sd"]; ok {
var ace string
if hdr.Typeflag == tar.TypeDir {
ace = "(A;OICI;0x1200a9;;;S-1-5-83-0)"
} else {
ace = "(A;;0x1200a9;;;S-1-5-83-0)"
}
if hdr.Winheaders["sd"], ok = addAceToSddlDacl(sddl, ace); !ok {
logrus.Debugf("failed to add VM ACE to %s", sddl)
}
}
}
hdr, err = backuptar.WriteBackupStreamFromTarFile(buf, t, hdr)
ferr := buf.Flush()
if ferr != nil {