diff options
Diffstat (limited to 'vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go')
-rw-r--r-- | vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go index a638677ed..b474604bd 100644 --- a/vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go +++ b/vendor/github.com/Microsoft/hcsshim/internal/hcs/utils.go @@ -1,10 +1,14 @@ package hcs import ( + "context" "io" "syscall" "github.com/Microsoft/go-winio" + diskutil "github.com/Microsoft/go-winio/vhd" + "github.com/pkg/errors" + "golang.org/x/sys/windows" ) // makeOpenFiles calls winio.MakeOpenFile for each handle in a slice but closes all the handles @@ -31,3 +35,27 @@ func makeOpenFiles(hs []syscall.Handle) (_ []io.ReadWriteCloser, err error) { } return fs, nil } + +// creates a VHD formatted with NTFS of size `sizeGB` at the given `vhdPath`. +func CreateNTFSVHD(ctx context.Context, vhdPath string, sizeGB uint32) (err error) { + if err := diskutil.CreateVhdx(vhdPath, sizeGB, 1); err != nil { + return errors.Wrap(err, "failed to create VHD") + } + + vhd, err := diskutil.OpenVirtualDisk(vhdPath, diskutil.VirtualDiskAccessNone, diskutil.OpenVirtualDiskFlagNone) + if err != nil { + return errors.Wrap(err, "failed to open VHD") + } + defer func() { + err2 := windows.CloseHandle(windows.Handle(vhd)) + if err == nil { + err = errors.Wrap(err2, "failed to close VHD") + } + }() + + if err := hcsFormatWritableLayerVhd(uintptr(vhd)); err != nil { + return errors.Wrap(err, "failed to format VHD") + } + + return nil +} |