diff options
Diffstat (limited to 'vendor/github.com/Microsoft/hcsshim/internal/hcs')
5 files changed, 87 insertions, 57 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/cgo.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/cgo.go deleted file mode 100644 index 3669c34aa..000000000 --- a/vendor/github.com/Microsoft/hcsshim/internal/hcs/cgo.go +++ /dev/null @@ -1,7 +0,0 @@ -package hcs - -import "C" - -// This import is needed to make the library compile as CGO because HCSSHIM -// only works with CGO due to callbacks from HCS comming back from a C thread -// which is not supported without CGO. See https://github.com/golang/go/issues/10973 diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/syscall.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/syscall.go new file mode 100644 index 000000000..ded2175c5 --- /dev/null +++ b/vendor/github.com/Microsoft/hcsshim/internal/hcs/syscall.go @@ -0,0 +1,5 @@ +package hcs + +//go:generate go run ../../mksyscall_windows.go -output zsyscall_windows.go syscall.go + +//sys hcsFormatWritableLayerVhd(handle uintptr) (hr error) = computestorage.HcsFormatWritableLayerVhd diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/system.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/system.go index 6300a7974..67a5f7176 100644 --- a/vendor/github.com/Microsoft/hcsshim/internal/hcs/system.go +++ b/vendor/github.com/Microsoft/hcsshim/internal/hcs/system.go @@ -4,12 +4,9 @@ import ( "context" "encoding/json" "errors" - "os" - "strconv" "strings" "sync" "syscall" - "time" "github.com/Microsoft/hcsshim/internal/cow" "github.com/Microsoft/hcsshim/internal/log" @@ -21,27 +18,6 @@ import ( "go.opencensus.io/trace" ) -// currentContainerStarts is used to limit the number of concurrent container -// starts. -var currentContainerStarts containerStarts - -type containerStarts struct { - maxParallel int - inProgress int - sync.Mutex -} - -func init() { - mpsS := os.Getenv("HCSSHIM_MAX_PARALLEL_START") - if len(mpsS) > 0 { - mpsI, err := strconv.Atoi(mpsS) - if err != nil || mpsI < 0 { - return - } - currentContainerStarts.maxParallel = mpsI - } -} - type System struct { handleLock sync.RWMutex handle vmcompute.HcsSystem @@ -215,32 +191,6 @@ func (computeSystem *System) Start(ctx context.Context) (err error) { return makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil) } - // This is a very simple backoff-retry loop to limit the number - // of parallel container starts if environment variable - // HCSSHIM_MAX_PARALLEL_START is set to a positive integer. - // It should generally only be used as a workaround to various - // platform issues that exist between RS1 and RS4 as of Aug 2018 - if currentContainerStarts.maxParallel > 0 { - for { - currentContainerStarts.Lock() - if currentContainerStarts.inProgress < currentContainerStarts.maxParallel { - currentContainerStarts.inProgress++ - currentContainerStarts.Unlock() - break - } - if currentContainerStarts.inProgress == currentContainerStarts.maxParallel { - currentContainerStarts.Unlock() - time.Sleep(100 * time.Millisecond) - } - } - // Make sure we decrement the count when we are done. - defer func() { - currentContainerStarts.Lock() - currentContainerStarts.inProgress-- - currentContainerStarts.Unlock() - }() - } - resultJSON, err := vmcompute.HcsStartComputeSystem(ctx, computeSystem.handle, "") events, err := processAsyncHcsResult(ctx, err, resultJSON, computeSystem.callbackNumber, hcsNotificationSystemStartCompleted, &timeout.SystemStart) if err != nil { 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 +} diff --git a/vendor/github.com/Microsoft/hcsshim/internal/hcs/zsyscall_windows.go b/vendor/github.com/Microsoft/hcsshim/internal/hcs/zsyscall_windows.go new file mode 100644 index 000000000..39396d272 --- /dev/null +++ b/vendor/github.com/Microsoft/hcsshim/internal/hcs/zsyscall_windows.go @@ -0,0 +1,54 @@ +// Code generated mksyscall_windows.exe DO NOT EDIT + +package hcs + +import ( + "syscall" + "unsafe" + + "golang.org/x/sys/windows" +) + +var _ unsafe.Pointer + +// Do the interface allocations only once for common +// Errno values. +const ( + errnoERROR_IO_PENDING = 997 +) + +var ( + errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING) +) + +// errnoErr returns common boxed Errno values, to prevent +// allocations at runtime. +func errnoErr(e syscall.Errno) error { + switch e { + case 0: + return nil + case errnoERROR_IO_PENDING: + return errERROR_IO_PENDING + } + // TODO: add more here, after collecting data on the common + // error values see on Windows. (perhaps when running + // all.bat?) + return e +} + +var ( + modcomputestorage = windows.NewLazySystemDLL("computestorage.dll") + + procHcsFormatWritableLayerVhd = modcomputestorage.NewProc("HcsFormatWritableLayerVhd") +) + +func hcsFormatWritableLayerVhd(handle uintptr) (hr error) { + r0, _, _ := syscall.Syscall(procHcsFormatWritableLayerVhd.Addr(), 1, uintptr(handle), 0, 0) + if int32(r0) < 0 { + if r0&0x1fff0000 == 0x00070000 { + r0 &= 0xffff + } + hr = syscall.Errno(r0) + } + return +} |