Windows: Updates Windows Vendoring

Updates windows dependent libraries for vendoing.

vendor/github.com/Microsoft/hcsshim/internal/uvm/vsmb.go

@@ -0,0 +1,112 @@
+package uvm
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/Microsoft/hcsshim/internal/requesttype"
+	"github.com/Microsoft/hcsshim/internal/schema2"
+	"github.com/sirupsen/logrus"
+)
+
+// findVSMBShare finds a share by `hostPath`. If not found returns `ErrNotAttached`.
+func (uvm *UtilityVM) findVSMBShare(hostPath string) (*vsmbShare, error) {
+	share, ok := uvm.vsmbShares[hostPath]
+	if !ok {
+		return nil, ErrNotAttached
+	}
+	return share, nil
+}
+
+func (share *vsmbShare) GuestPath() string {
+	return `\\?\VMSMB\VSMB-{dcc079ae-60ba-4d07-847c-3493609c0870}\` + share.name
+}
+
+// AddVSMB adds a VSMB share to a Windows utility VM. Each VSMB share is ref-counted and
+// only added if it isn't already. This is used for read-only layers, mapped directories
+// to a container, and for mapped pipes.
+func (uvm *UtilityVM) AddVSMB(hostPath string, guestRequest interface{}, options *hcsschema.VirtualSmbShareOptions) error {
+	if uvm.operatingSystem != "windows" {
+		return errNotSupported
+	}
+
+	logrus.Debugf("uvm::AddVSMB %s %+v %+v id:%s", hostPath, guestRequest, options, uvm.id)
+	uvm.m.Lock()
+	defer uvm.m.Unlock()
+	share, err := uvm.findVSMBShare(hostPath)
+	if err == ErrNotAttached {
+		uvm.vsmbCounter++
+		shareName := "s" + strconv.FormatUint(uvm.vsmbCounter, 16)
+
+		modification := &hcsschema.ModifySettingRequest{
+			RequestType: requesttype.Add,
+			Settings: hcsschema.VirtualSmbShare{
+				Name:    shareName,
+				Options: options,
+				Path:    hostPath,
+			},
+			ResourcePath: "VirtualMachine/Devices/VirtualSmb/Shares",
+		}
+
+		if err := uvm.Modify(modification); err != nil {
+			return err
+		}
+		share = &vsmbShare{
+			name:         shareName,
+			guestRequest: guestRequest,
+		}
+		uvm.vsmbShares[hostPath] = share
+	}
+	share.refCount++
+	logrus.Debugf("hcsshim::AddVSMB Success %s: refcount=%d %+v", hostPath, share.refCount, share)
+	return nil
+}
+
+// RemoveVSMB removes a VSMB share from a utility VM. Each VSMB share is ref-counted
+// and only actually removed when the ref-count drops to zero.
+func (uvm *UtilityVM) RemoveVSMB(hostPath string) error {
+	if uvm.operatingSystem != "windows" {
+		return errNotSupported
+	}
+	logrus.Debugf("uvm::RemoveVSMB %s id:%s", hostPath, uvm.id)
+	uvm.m.Lock()
+	defer uvm.m.Unlock()
+	share, err := uvm.findVSMBShare(hostPath)
+	if err != nil {
+		return fmt.Errorf("%s is not present as a VSMB share in %s, cannot remove", hostPath, uvm.id)
+	}
+
+	share.refCount--
+	if share.refCount > 0 {
+		logrus.Debugf("uvm::RemoveVSMB Success %s id:%s Ref-count now %d. It is still present in the utility VM", hostPath, uvm.id, share.refCount)
+		return nil
+	}
+	logrus.Debugf("uvm::RemoveVSMB Zero ref-count, removing. %s id:%s", hostPath, uvm.id)
+	modification := &hcsschema.ModifySettingRequest{
+		RequestType:  requesttype.Remove,
+		Settings:     hcsschema.VirtualSmbShare{Name: share.name},
+		ResourcePath: "VirtualMachine/Devices/VirtualSmb/Shares",
+	}
+	if err := uvm.Modify(modification); err != nil {
+		return fmt.Errorf("failed to remove vsmb share %s from %s: %+v: %s", hostPath, uvm.id, modification, err)
+	}
+	logrus.Debugf("uvm::RemoveVSMB Success %s id:%s successfully removed from utility VM", hostPath, uvm.id)
+	delete(uvm.vsmbShares, hostPath)
+	return nil
+}
+
+// GetVSMBUvmPath returns the guest path of a VSMB mount.
+func (uvm *UtilityVM) GetVSMBUvmPath(hostPath string) (string, error) {
+	if hostPath == "" {
+		return "", fmt.Errorf("no hostPath passed to GetVSMBUvmPath")
+	}
+	uvm.m.Lock()
+	defer uvm.m.Unlock()
+	share, err := uvm.findVSMBShare(hostPath)
+	if err != nil {
+		return "", err
+	}
+	path := share.GuestPath()
+	logrus.Debugf("uvm::GetVSMBUvmPath Success %s id:%s path:%s", hostPath, uvm.id, path)
+	return path, nil
+}