Merge pull request #37712 from Microsoft/jjh/detach
Windows: Try to detach sandbox on cleanup to avoid permission denied
This commit is contained in:
Yong Tang
GitHub
commit
703a04ebc9
5 changed files with 295 additions and 222 deletions
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@ -6,7 +6,6 @@ import (
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"bufio"
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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@ -23,6 +22,7 @@ import (
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"github.com/Microsoft/go-winio"
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"github.com/Microsoft/go-winio/archive/tar"
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"github.com/Microsoft/go-winio/backuptar"
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"github.com/Microsoft/go-winio/vhd"
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"github.com/Microsoft/hcsshim"
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"github.com/docker/docker/daemon/graphdriver"
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"github.com/docker/docker/pkg/archive"
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@ -33,6 +33,7 @@ import (
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"github.com/docker/docker/pkg/reexec"
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"github.com/docker/docker/pkg/system"
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units "github.com/docker/go-units"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"golang.org/x/sys/windows"
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)
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@ -331,7 +332,18 @@ func (d *Driver) Remove(id string) error {
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tmpID := fmt.Sprintf("%s-removing", rID)
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tmpLayerPath := filepath.Join(d.info.HomeDir, tmpID)
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if err := os.Rename(layerPath, tmpLayerPath); err != nil && !os.IsNotExist(err) {
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return err
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if !os.IsPermission(err) {
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return err
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}
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// If permission denied, it's possible that the scratch is still mounted, an
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// artifact after a hard daemon crash for example. Worth a shot to try detaching it
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// before retrying the rename.
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if detachErr := vhd.DetachVhd(filepath.Join(layerPath, "sandbox.vhdx")); detachErr != nil {
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return errors.Wrapf(err, "failed to detach VHD: %s", detachErr)
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}
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if renameErr := os.Rename(layerPath, tmpLayerPath); renameErr != nil && !os.IsNotExist(renameErr) {
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return errors.Wrapf(err, "second rename attempt following detach failed: %s", renameErr)
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}
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}
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if err := hcsshim.DestroyLayer(d.info, tmpID); err != nil {
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logrus.Errorf("Failed to DestroyLayer %s: %s", id, err)
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@ -1,7 +1,7 @@
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# the following lines are in sorted order, FYI
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github.com/Azure/go-ansiterm d6e3b3328b783f23731bc4d058875b0371ff8109
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github.com/Microsoft/hcsshim 44c060121b68e8bdc40b411beba551f3b4ee9e55
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github.com/Microsoft/go-winio v0.4.10
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github.com/Microsoft/go-winio v0.4.11
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github.com/docker/libtrust 9cbd2a1374f46905c68a4eb3694a130610adc62a
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github.com/go-check/check 4ed411733c5785b40214c70bce814c3a3a689609 https://github.com/cpuguy83/check.git
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github.com/golang/gddo 9b12a26f3fbd7397dee4e20939ddca719d840d2a
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274
vendor/github.com/Microsoft/go-winio/ea.go
generated
vendored
274
vendor/github.com/Microsoft/go-winio/ea.go
generated
vendored
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@ -1,137 +1,137 @@
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package winio
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import (
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"bytes"
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"encoding/binary"
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"errors"
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)
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type fileFullEaInformation struct {
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NextEntryOffset uint32
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Flags uint8
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NameLength uint8
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ValueLength uint16
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}
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var (
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fileFullEaInformationSize = binary.Size(&fileFullEaInformation{})
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errInvalidEaBuffer = errors.New("invalid extended attribute buffer")
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errEaNameTooLarge = errors.New("extended attribute name too large")
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errEaValueTooLarge = errors.New("extended attribute value too large")
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)
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// ExtendedAttribute represents a single Windows EA.
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type ExtendedAttribute struct {
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Name string
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Value []byte
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Flags uint8
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}
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func parseEa(b []byte) (ea ExtendedAttribute, nb []byte, err error) {
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var info fileFullEaInformation
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err = binary.Read(bytes.NewReader(b), binary.LittleEndian, &info)
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if err != nil {
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err = errInvalidEaBuffer
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return
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}
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nameOffset := fileFullEaInformationSize
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nameLen := int(info.NameLength)
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valueOffset := nameOffset + int(info.NameLength) + 1
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valueLen := int(info.ValueLength)
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nextOffset := int(info.NextEntryOffset)
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if valueLen+valueOffset > len(b) || nextOffset < 0 || nextOffset > len(b) {
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err = errInvalidEaBuffer
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return
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}
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ea.Name = string(b[nameOffset : nameOffset+nameLen])
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ea.Value = b[valueOffset : valueOffset+valueLen]
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ea.Flags = info.Flags
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if info.NextEntryOffset != 0 {
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nb = b[info.NextEntryOffset:]
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}
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return
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}
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// DecodeExtendedAttributes decodes a list of EAs from a FILE_FULL_EA_INFORMATION
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// buffer retrieved from BackupRead, ZwQueryEaFile, etc.
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func DecodeExtendedAttributes(b []byte) (eas []ExtendedAttribute, err error) {
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for len(b) != 0 {
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ea, nb, err := parseEa(b)
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if err != nil {
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return nil, err
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}
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eas = append(eas, ea)
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b = nb
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}
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return
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}
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func writeEa(buf *bytes.Buffer, ea *ExtendedAttribute, last bool) error {
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if int(uint8(len(ea.Name))) != len(ea.Name) {
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return errEaNameTooLarge
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}
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if int(uint16(len(ea.Value))) != len(ea.Value) {
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return errEaValueTooLarge
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}
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entrySize := uint32(fileFullEaInformationSize + len(ea.Name) + 1 + len(ea.Value))
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withPadding := (entrySize + 3) &^ 3
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nextOffset := uint32(0)
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if !last {
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nextOffset = withPadding
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}
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info := fileFullEaInformation{
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NextEntryOffset: nextOffset,
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Flags: ea.Flags,
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NameLength: uint8(len(ea.Name)),
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ValueLength: uint16(len(ea.Value)),
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}
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err := binary.Write(buf, binary.LittleEndian, &info)
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if err != nil {
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return err
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}
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_, err = buf.Write([]byte(ea.Name))
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if err != nil {
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return err
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}
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err = buf.WriteByte(0)
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if err != nil {
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return err
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}
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_, err = buf.Write(ea.Value)
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if err != nil {
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return err
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}
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_, err = buf.Write([]byte{0, 0, 0}[0 : withPadding-entrySize])
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if err != nil {
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return err
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}
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return nil
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}
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// EncodeExtendedAttributes encodes a list of EAs into a FILE_FULL_EA_INFORMATION
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// buffer for use with BackupWrite, ZwSetEaFile, etc.
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func EncodeExtendedAttributes(eas []ExtendedAttribute) ([]byte, error) {
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var buf bytes.Buffer
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for i := range eas {
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last := false
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if i == len(eas)-1 {
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last = true
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}
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err := writeEa(&buf, &eas[i], last)
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if err != nil {
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return nil, err
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}
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}
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return buf.Bytes(), nil
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}
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package winio
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import (
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"bytes"
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"encoding/binary"
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"errors"
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)
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type fileFullEaInformation struct {
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NextEntryOffset uint32
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Flags uint8
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NameLength uint8
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ValueLength uint16
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}
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var (
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fileFullEaInformationSize = binary.Size(&fileFullEaInformation{})
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errInvalidEaBuffer = errors.New("invalid extended attribute buffer")
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errEaNameTooLarge = errors.New("extended attribute name too large")
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errEaValueTooLarge = errors.New("extended attribute value too large")
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)
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// ExtendedAttribute represents a single Windows EA.
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type ExtendedAttribute struct {
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Name string
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Value []byte
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Flags uint8
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}
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func parseEa(b []byte) (ea ExtendedAttribute, nb []byte, err error) {
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var info fileFullEaInformation
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err = binary.Read(bytes.NewReader(b), binary.LittleEndian, &info)
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if err != nil {
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err = errInvalidEaBuffer
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return
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}
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nameOffset := fileFullEaInformationSize
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nameLen := int(info.NameLength)
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valueOffset := nameOffset + int(info.NameLength) + 1
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valueLen := int(info.ValueLength)
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nextOffset := int(info.NextEntryOffset)
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if valueLen+valueOffset > len(b) || nextOffset < 0 || nextOffset > len(b) {
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err = errInvalidEaBuffer
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return
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}
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ea.Name = string(b[nameOffset : nameOffset+nameLen])
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ea.Value = b[valueOffset : valueOffset+valueLen]
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ea.Flags = info.Flags
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if info.NextEntryOffset != 0 {
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nb = b[info.NextEntryOffset:]
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}
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return
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}
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// DecodeExtendedAttributes decodes a list of EAs from a FILE_FULL_EA_INFORMATION
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// buffer retrieved from BackupRead, ZwQueryEaFile, etc.
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func DecodeExtendedAttributes(b []byte) (eas []ExtendedAttribute, err error) {
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for len(b) != 0 {
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ea, nb, err := parseEa(b)
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if err != nil {
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return nil, err
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}
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eas = append(eas, ea)
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b = nb
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}
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return
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}
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func writeEa(buf *bytes.Buffer, ea *ExtendedAttribute, last bool) error {
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if int(uint8(len(ea.Name))) != len(ea.Name) {
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return errEaNameTooLarge
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}
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if int(uint16(len(ea.Value))) != len(ea.Value) {
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return errEaValueTooLarge
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}
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entrySize := uint32(fileFullEaInformationSize + len(ea.Name) + 1 + len(ea.Value))
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withPadding := (entrySize + 3) &^ 3
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nextOffset := uint32(0)
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if !last {
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nextOffset = withPadding
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}
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info := fileFullEaInformation{
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NextEntryOffset: nextOffset,
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Flags: ea.Flags,
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NameLength: uint8(len(ea.Name)),
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ValueLength: uint16(len(ea.Value)),
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}
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err := binary.Write(buf, binary.LittleEndian, &info)
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if err != nil {
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return err
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}
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_, err = buf.Write([]byte(ea.Name))
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if err != nil {
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return err
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}
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|
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err = buf.WriteByte(0)
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if err != nil {
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return err
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}
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_, err = buf.Write(ea.Value)
|
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if err != nil {
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return err
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}
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_, err = buf.Write([]byte{0, 0, 0}[0 : withPadding-entrySize])
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if err != nil {
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return err
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}
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|
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return nil
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}
|
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|
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// EncodeExtendedAttributes encodes a list of EAs into a FILE_FULL_EA_INFORMATION
|
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// buffer for use with BackupWrite, ZwSetEaFile, etc.
|
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func EncodeExtendedAttributes(eas []ExtendedAttribute) ([]byte, error) {
|
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var buf bytes.Buffer
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for i := range eas {
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last := false
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if i == len(eas)-1 {
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last = true
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}
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|
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err := writeEa(&buf, &eas[i], last)
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if err != nil {
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return nil, err
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}
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}
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return buf.Bytes(), nil
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}
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|
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190
vendor/github.com/Microsoft/go-winio/vhd/vhd.go
generated
vendored
190
vendor/github.com/Microsoft/go-winio/vhd/vhd.go
generated
vendored
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@ -1,82 +1,108 @@
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// +build windows
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package vhd
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import "syscall"
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//go:generate go run mksyscall_windows.go -output zvhd.go vhd.go
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|
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//sys createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.CreateVirtualDisk
|
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|
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type virtualStorageType struct {
|
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DeviceID uint32
|
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VendorID [16]byte
|
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}
|
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|
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const virtualDiskAccessNONE uint32 = 0
|
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const virtualDiskAccessATTACHRO uint32 = 65536
|
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const virtualDiskAccessATTACHRW uint32 = 131072
|
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const virtualDiskAccessDETACH uint32 = 262144
|
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const virtualDiskAccessGETINFO uint32 = 524288
|
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const virtualDiskAccessCREATE uint32 = 1048576
|
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const virtualDiskAccessMETAOPS uint32 = 2097152
|
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const virtualDiskAccessREAD uint32 = 851968
|
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const virtualDiskAccessALL uint32 = 4128768
|
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const virtualDiskAccessWRITABLE uint32 = 3276800
|
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|
||||
const createVirtualDiskFlagNone uint32 = 0
|
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const createVirtualDiskFlagFullPhysicalAllocation uint32 = 1
|
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const createVirtualDiskFlagPreventWritesToSourceDisk uint32 = 2
|
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const createVirtualDiskFlagDoNotCopyMetadataFromParent uint32 = 4
|
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|
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type version2 struct {
|
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UniqueID [16]byte // GUID
|
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MaximumSize uint64
|
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BlockSizeInBytes uint32
|
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SectorSizeInBytes uint32
|
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ParentPath *uint16 // string
|
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SourcePath *uint16 // string
|
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OpenFlags uint32
|
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ParentVirtualStorageType virtualStorageType
|
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SourceVirtualStorageType virtualStorageType
|
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ResiliencyGUID [16]byte // GUID
|
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}
|
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|
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type createVirtualDiskParameters struct {
|
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Version uint32 // Must always be set to 2
|
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Version2 version2
|
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}
|
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|
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// CreateVhdx will create a simple vhdx file at the given path using default values.
|
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func CreateVhdx(path string, maxSizeInGb, blockSizeInMb uint32) error {
|
||||
var defaultType virtualStorageType
|
||||
|
||||
parameters := createVirtualDiskParameters{
|
||||
Version: 2,
|
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Version2: version2{
|
||||
MaximumSize: uint64(maxSizeInGb) * 1024 * 1024 * 1024,
|
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BlockSizeInBytes: blockSizeInMb * 1024 * 1024,
|
||||
},
|
||||
}
|
||||
|
||||
var handle syscall.Handle
|
||||
|
||||
if err := createVirtualDisk(
|
||||
&defaultType,
|
||||
path,
|
||||
virtualDiskAccessNONE,
|
||||
nil,
|
||||
createVirtualDiskFlagNone,
|
||||
0,
|
||||
¶meters,
|
||||
nil,
|
||||
&handle); err != nil {
|
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return err
|
||||
}
|
||||
|
||||
if err := syscall.CloseHandle(handle); err != nil {
|
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return err
|
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}
|
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|
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return nil
|
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}
|
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// +build windows
|
||||
|
||||
package vhd
|
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|
||||
import "syscall"
|
||||
|
||||
//go:generate go run mksyscall_windows.go -output zvhd.go vhd.go
|
||||
|
||||
//sys createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.CreateVirtualDisk
|
||||
//sys openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.OpenVirtualDisk
|
||||
//sys detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) [failretval != 0] = VirtDisk.DetachVirtualDisk
|
||||
|
||||
type virtualStorageType struct {
|
||||
DeviceID uint32
|
||||
VendorID [16]byte
|
||||
}
|
||||
|
||||
const virtualDiskAccessNONE uint32 = 0
|
||||
const virtualDiskAccessATTACHRO uint32 = 65536
|
||||
const virtualDiskAccessATTACHRW uint32 = 131072
|
||||
const virtualDiskAccessDETACH uint32 = 262144
|
||||
const virtualDiskAccessGETINFO uint32 = 524288
|
||||
const virtualDiskAccessCREATE uint32 = 1048576
|
||||
const virtualDiskAccessMETAOPS uint32 = 2097152
|
||||
const virtualDiskAccessREAD uint32 = 851968
|
||||
const virtualDiskAccessALL uint32 = 4128768
|
||||
const virtualDiskAccessWRITABLE uint32 = 3276800
|
||||
|
||||
const createVirtualDiskFlagNone uint32 = 0
|
||||
const createVirtualDiskFlagFullPhysicalAllocation uint32 = 1
|
||||
const createVirtualDiskFlagPreventWritesToSourceDisk uint32 = 2
|
||||
const createVirtualDiskFlagDoNotCopyMetadataFromParent uint32 = 4
|
||||
|
||||
type version2 struct {
|
||||
UniqueID [16]byte // GUID
|
||||
MaximumSize uint64
|
||||
BlockSizeInBytes uint32
|
||||
SectorSizeInBytes uint32
|
||||
ParentPath *uint16 // string
|
||||
SourcePath *uint16 // string
|
||||
OpenFlags uint32
|
||||
ParentVirtualStorageType virtualStorageType
|
||||
SourceVirtualStorageType virtualStorageType
|
||||
ResiliencyGUID [16]byte // GUID
|
||||
}
|
||||
|
||||
type createVirtualDiskParameters struct {
|
||||
Version uint32 // Must always be set to 2
|
||||
Version2 version2
|
||||
}
|
||||
|
||||
// CreateVhdx will create a simple vhdx file at the given path using default values.
|
||||
func CreateVhdx(path string, maxSizeInGb, blockSizeInMb uint32) error {
|
||||
var defaultType virtualStorageType
|
||||
|
||||
parameters := createVirtualDiskParameters{
|
||||
Version: 2,
|
||||
Version2: version2{
|
||||
MaximumSize: uint64(maxSizeInGb) * 1024 * 1024 * 1024,
|
||||
BlockSizeInBytes: blockSizeInMb * 1024 * 1024,
|
||||
},
|
||||
}
|
||||
|
||||
var handle syscall.Handle
|
||||
|
||||
if err := createVirtualDisk(
|
||||
&defaultType,
|
||||
path,
|
||||
virtualDiskAccessNONE,
|
||||
nil,
|
||||
createVirtualDiskFlagNone,
|
||||
0,
|
||||
¶meters,
|
||||
nil,
|
||||
&handle); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := syscall.CloseHandle(handle); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// DetachVhd detaches a VHD attached at the given path.
|
||||
func DetachVhd(path string) error {
|
||||
var (
|
||||
defaultType virtualStorageType
|
||||
handle syscall.Handle
|
||||
)
|
||||
|
||||
if err := openVirtualDisk(
|
||||
&defaultType,
|
||||
path,
|
||||
virtualDiskAccessDETACH,
|
||||
0,
|
||||
nil,
|
||||
&handle); err != nil {
|
||||
return err
|
||||
}
|
||||
defer syscall.CloseHandle(handle)
|
||||
|
||||
if err := detachVirtualDisk(handle, 0, 0); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
35
vendor/github.com/Microsoft/go-winio/vhd/zvhd.go
generated
vendored
35
vendor/github.com/Microsoft/go-winio/vhd/zvhd.go
generated
vendored
|
|
@ -40,6 +40,8 @@ var (
|
|||
modVirtDisk = windows.NewLazySystemDLL("VirtDisk.dll")
|
||||
|
||||
procCreateVirtualDisk = modVirtDisk.NewProc("CreateVirtualDisk")
|
||||
procOpenVirtualDisk = modVirtDisk.NewProc("OpenVirtualDisk")
|
||||
procDetachVirtualDisk = modVirtDisk.NewProc("DetachVirtualDisk")
|
||||
)
|
||||
|
||||
func createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) {
|
||||
|
|
@ -62,3 +64,36 @@ func _createVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, vi
|
|||
}
|
||||
return
|
||||
}
|
||||
|
||||
func openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) {
|
||||
var _p0 *uint16
|
||||
_p0, err = syscall.UTF16PtrFromString(path)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return _openVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, flags, parameters, handle)
|
||||
}
|
||||
|
||||
func _openVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) {
|
||||
r1, _, e1 := syscall.Syscall6(procOpenVirtualDisk.Addr(), 6, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(flags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(handle)))
|
||||
if r1 != 0 {
|
||||
if e1 != 0 {
|
||||
err = errnoErr(e1)
|
||||
} else {
|
||||
err = syscall.EINVAL
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) {
|
||||
r1, _, e1 := syscall.Syscall(procDetachVirtualDisk.Addr(), 3, uintptr(handle), uintptr(flags), uintptr(providerSpecificFlags))
|
||||
if r1 != 0 {
|
||||
if e1 != 0 {
|
||||
err = errnoErr(e1)
|
||||
} else {
|
||||
err = syscall.EINVAL
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue