a551492e99
* Update hcsshim to v0.8.14 * Update go-winio to v0.4.16 This brings in some vhd package changes from winio, and the compute storage api bindings for the shim. This is to facilitate some coming functionality for the windows snapshotter as well as possibly for future work down the line for the windows differ. Signed-off-by: Daniel Canter <dcanter@microsoft.com>
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package hcs
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import (
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"context"
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"io"
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"syscall"
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"github.com/Microsoft/go-winio"
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diskutil "github.com/Microsoft/go-winio/vhd"
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"github.com/Microsoft/hcsshim/computestorage"
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"github.com/pkg/errors"
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"golang.org/x/sys/windows"
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)
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// makeOpenFiles calls winio.MakeOpenFile for each handle in a slice but closes all the handles
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// if there is an error.
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func makeOpenFiles(hs []syscall.Handle) (_ []io.ReadWriteCloser, err error) {
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fs := make([]io.ReadWriteCloser, len(hs))
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for i, h := range hs {
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if h != syscall.Handle(0) {
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if err == nil {
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fs[i], err = winio.MakeOpenFile(h)
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}
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if err != nil {
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syscall.Close(h)
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}
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}
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}
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if err != nil {
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for _, f := range fs {
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if f != nil {
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f.Close()
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}
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}
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return nil, err
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}
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return fs, nil
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}
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// CreateNTFSVHD creates a VHD formatted with NTFS of size `sizeGB` at the given `vhdPath`.
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func CreateNTFSVHD(ctx context.Context, vhdPath string, sizeGB uint32) (err error) {
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if err := diskutil.CreateVhdx(vhdPath, sizeGB, 1); err != nil {
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return errors.Wrap(err, "failed to create VHD")
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}
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vhd, err := diskutil.OpenVirtualDisk(vhdPath, diskutil.VirtualDiskAccessNone, diskutil.OpenVirtualDiskFlagNone)
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if err != nil {
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return errors.Wrap(err, "failed to open VHD")
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}
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defer func() {
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err2 := windows.CloseHandle(windows.Handle(vhd))
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if err == nil {
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err = errors.Wrap(err2, "failed to close VHD")
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}
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}()
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if err := computestorage.FormatWritableLayerVhd(ctx, windows.Handle(vhd)); err != nil {
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return errors.Wrap(err, "failed to format VHD")
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}
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return nil
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}
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