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authorValentin Rothberg <rothberg@redhat.com>2019-01-08 14:52:57 +0100
committerValentin Rothberg <rothberg@redhat.com>2019-01-11 13:38:11 +0100
commitbd40dcfc2bc7c9014ea1f33482fb63aacbcdfe87 (patch)
tree5f06e4e289f16d9164d692590a3fe6541b5384cf /vendor/github.com/Microsoft/hcsshim/exportlayer.go
parent545f24421247c9f6251a634764db3f8f8070a812 (diff)
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vendor: update everything
* If possible, update each dependency to the latest available version. * Use releases over commit IDs and avoid vendoring branches. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Diffstat (limited to 'vendor/github.com/Microsoft/hcsshim/exportlayer.go')
-rw-r--r--vendor/github.com/Microsoft/hcsshim/exportlayer.go156
1 files changed, 0 insertions, 156 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/exportlayer.go b/vendor/github.com/Microsoft/hcsshim/exportlayer.go
deleted file mode 100644
index d7025f20b..000000000
--- a/vendor/github.com/Microsoft/hcsshim/exportlayer.go
+++ /dev/null
@@ -1,156 +0,0 @@
-package hcsshim
-
-import (
- "io"
- "io/ioutil"
- "os"
- "syscall"
-
- "github.com/Microsoft/go-winio"
- "github.com/sirupsen/logrus"
-)
-
-// ExportLayer will create a folder at exportFolderPath and fill that folder with
-// the transport format version of the layer identified by layerId. This transport
-// format includes any metadata required for later importing the layer (using
-// ImportLayer), and requires the full list of parent layer paths in order to
-// perform the export.
-func ExportLayer(info DriverInfo, layerId string, exportFolderPath string, parentLayerPaths []string) error {
- title := "hcsshim::ExportLayer "
- logrus.Debugf(title+"flavour %d layerId %s folder %s", info.Flavour, layerId, exportFolderPath)
-
- // Generate layer descriptors
- layers, err := layerPathsToDescriptors(parentLayerPaths)
- if err != nil {
- return err
- }
-
- // Convert info to API calling convention
- infop, err := convertDriverInfo(info)
- if err != nil {
- logrus.Error(err)
- return err
- }
-
- err = exportLayer(&infop, layerId, exportFolderPath, layers)
- if err != nil {
- err = makeErrorf(err, title, "layerId=%s flavour=%d folder=%s", layerId, info.Flavour, exportFolderPath)
- logrus.Error(err)
- return err
- }
-
- logrus.Debugf(title+"succeeded flavour=%d layerId=%s folder=%s", info.Flavour, layerId, exportFolderPath)
- return nil
-}
-
-type LayerReader interface {
- Next() (string, int64, *winio.FileBasicInfo, error)
- Read(b []byte) (int, error)
- Close() error
-}
-
-// FilterLayerReader provides an interface for extracting the contents of an on-disk layer.
-type FilterLayerReader struct {
- context uintptr
-}
-
-// Next reads the next available file from a layer, ensuring that parent directories are always read
-// before child files and directories.
-//
-// Next returns the file's relative path, size, and basic file metadata. Read() should be used to
-// extract a Win32 backup stream with the remainder of the metadata and the data.
-func (r *FilterLayerReader) Next() (string, int64, *winio.FileBasicInfo, error) {
- var fileNamep *uint16
- fileInfo := &winio.FileBasicInfo{}
- var deleted uint32
- var fileSize int64
- err := exportLayerNext(r.context, &fileNamep, fileInfo, &fileSize, &deleted)
- if err != nil {
- if err == syscall.ERROR_NO_MORE_FILES {
- err = io.EOF
- } else {
- err = makeError(err, "ExportLayerNext", "")
- }
- return "", 0, nil, err
- }
- fileName := convertAndFreeCoTaskMemString(fileNamep)
- if deleted != 0 {
- fileInfo = nil
- }
- if fileName[0] == '\\' {
- fileName = fileName[1:]
- }
- return fileName, fileSize, fileInfo, nil
-}
-
-// Read reads from the current file's Win32 backup stream.
-func (r *FilterLayerReader) Read(b []byte) (int, error) {
- var bytesRead uint32
- err := exportLayerRead(r.context, b, &bytesRead)
- if err != nil {
- return 0, makeError(err, "ExportLayerRead", "")
- }
- if bytesRead == 0 {
- return 0, io.EOF
- }
- return int(bytesRead), nil
-}
-
-// Close frees resources associated with the layer reader. It will return an
-// error if there was an error while reading the layer or of the layer was not
-// completely read.
-func (r *FilterLayerReader) Close() (err error) {
- if r.context != 0 {
- err = exportLayerEnd(r.context)
- if err != nil {
- err = makeError(err, "ExportLayerEnd", "")
- }
- r.context = 0
- }
- return
-}
-
-// NewLayerReader returns a new layer reader for reading the contents of an on-disk layer.
-// The caller must have taken the SeBackupPrivilege privilege
-// to call this and any methods on the resulting LayerReader.
-func NewLayerReader(info DriverInfo, layerID string, parentLayerPaths []string) (LayerReader, error) {
- if procExportLayerBegin.Find() != nil {
- // The new layer reader is not available on this Windows build. Fall back to the
- // legacy export code path.
- path, err := ioutil.TempDir("", "hcs")
- if err != nil {
- return nil, err
- }
- err = ExportLayer(info, layerID, path, parentLayerPaths)
- if err != nil {
- os.RemoveAll(path)
- return nil, err
- }
- return &legacyLayerReaderWrapper{newLegacyLayerReader(path)}, nil
- }
-
- layers, err := layerPathsToDescriptors(parentLayerPaths)
- if err != nil {
- return nil, err
- }
- infop, err := convertDriverInfo(info)
- if err != nil {
- return nil, err
- }
- r := &FilterLayerReader{}
- err = exportLayerBegin(&infop, layerID, layers, &r.context)
- if err != nil {
- return nil, makeError(err, "ExportLayerBegin", "")
- }
- return r, err
-}
-
-type legacyLayerReaderWrapper struct {
- *legacyLayerReader
-}
-
-func (r *legacyLayerReaderWrapper) Close() error {
- err := r.legacyLayerReader.Close()
- os.RemoveAll(r.root)
- return err
-}