Dismount sandbox VHD on snapshot remove
Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
This commit is contained in:
Justin Terry (VM)
274
vendor/github.com/Microsoft/go-winio/ea.go
generated
vendored
274
vendor/github.com/Microsoft/go-winio/ea.go
generated
vendored
@@ -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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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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108
vendor/github.com/Microsoft/go-winio/vhd/vhd.go
generated
vendored
Normal file
108
vendor/github.com/Microsoft/go-winio/vhd/vhd.go
generated
vendored
Normal file
@@ -0,0 +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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//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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//sys openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.OpenVirtualDisk
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//sys detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) [failretval != 0] = VirtDisk.DetachVirtualDisk
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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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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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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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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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// 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 {
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var defaultType virtualStorageType
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parameters := createVirtualDiskParameters{
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Version: 2,
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Version2: version2{
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MaximumSize: uint64(maxSizeInGb) * 1024 * 1024 * 1024,
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BlockSizeInBytes: blockSizeInMb * 1024 * 1024,
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},
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}
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var handle syscall.Handle
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if err := createVirtualDisk(
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&defaultType,
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path,
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virtualDiskAccessNONE,
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nil,
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createVirtualDiskFlagNone,
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0,
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¶meters,
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nil,
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&handle); err != nil {
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return err
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}
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if err := syscall.CloseHandle(handle); 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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// DetachVhd detaches a VHD attached at the given path.
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func DetachVhd(path string) error {
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var (
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defaultType virtualStorageType
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handle syscall.Handle
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)
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if err := openVirtualDisk(
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&defaultType,
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path,
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virtualDiskAccessDETACH,
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0,
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nil,
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&handle); err != nil {
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return err
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}
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defer syscall.CloseHandle(handle)
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if err := detachVirtualDisk(handle, 0, 0); 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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99
vendor/github.com/Microsoft/go-winio/vhd/zvhd.go
generated
vendored
Normal file
99
vendor/github.com/Microsoft/go-winio/vhd/zvhd.go
generated
vendored
Normal file
@@ -0,0 +1,99 @@
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// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT
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package vhd
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import (
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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var _ unsafe.Pointer
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// Do the interface allocations only once for common
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// Errno values.
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const (
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errnoERROR_IO_PENDING = 997
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)
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var (
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errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
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)
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// errnoErr returns common boxed Errno values, to prevent
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// allocations at runtime.
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func errnoErr(e syscall.Errno) error {
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switch e {
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case 0:
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return nil
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case errnoERROR_IO_PENDING:
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return errERROR_IO_PENDING
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}
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// TODO: add more here, after collecting data on the common
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// error values see on Windows. (perhaps when running
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// all.bat?)
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return e
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}
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var (
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modVirtDisk = windows.NewLazySystemDLL("VirtDisk.dll")
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procCreateVirtualDisk = modVirtDisk.NewProc("CreateVirtualDisk")
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procOpenVirtualDisk = modVirtDisk.NewProc("OpenVirtualDisk")
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procDetachVirtualDisk = modVirtDisk.NewProc("DetachVirtualDisk")
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)
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func createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) {
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var _p0 *uint16
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_p0, err = syscall.UTF16PtrFromString(path)
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if err != nil {
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return
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}
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return _createVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, securityDescriptor, flags, providerSpecificFlags, parameters, o, handle)
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}
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func _createVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) {
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r1, _, e1 := syscall.Syscall9(procCreateVirtualDisk.Addr(), 9, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(unsafe.Pointer(securityDescriptor)), uintptr(flags), uintptr(providerSpecificFlags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(o)), uintptr(unsafe.Pointer(handle)))
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if r1 != 0 {
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if e1 != 0 {
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err = errnoErr(e1)
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} else {
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err = syscall.EINVAL
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}
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}
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return
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}
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func openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) {
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var _p0 *uint16
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_p0, err = syscall.UTF16PtrFromString(path)
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if err != nil {
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return
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}
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return _openVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, flags, parameters, handle)
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}
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func _openVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virtualDiskAccessMask uint32, flags uint32, parameters *uintptr, handle *syscall.Handle) (err error) {
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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)))
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if r1 != 0 {
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if e1 != 0 {
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err = errnoErr(e1)
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} else {
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err = syscall.EINVAL
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}
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}
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return
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}
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|
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func detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) {
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r1, _, e1 := syscall.Syscall(procDetachVirtualDisk.Addr(), 3, uintptr(handle), uintptr(flags), uintptr(providerSpecificFlags))
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if r1 != 0 {
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if e1 != 0 {
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err = errnoErr(e1)
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} else {
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err = syscall.EINVAL
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}
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}
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return
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}
|
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Reference in New Issue
Block a user