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https://github.com/k3s-io/kubernetes.git
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3eef755b3b
This tag of hcsshim brings in a couple welcome features/improvements. One being exposing a way to query for hns endpoint statistics (Packets received/sent etc.). This tag also contains some optimizations for querying whether a certain HCN feature is supported, which is a common workflow in kube-proxy on Windows. The first result from querying HCN is now cached so further calls can skip the hcn query as well as the version range parsing that was performed. This also gets rid of some redundant logs that used to hit everytime the version range parsing occurred. The Go-winio dep bump, and all of the ctrd deps are transitive only. Nothing new is needed/intended to be used. 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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