tailscale/util/winutil/zsyscall_windows.go

// Code generated by 'go generate'; DO NOT EDIT.

package winutil

import (
	"syscall"
	"unsafe"

	"golang.org/x/sys/windows"
	"golang.org/x/sys/windows/registry"
)

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)
	errERROR_EINVAL     error = syscall.EINVAL
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
	switch e {
	case 0:
		return errERROR_EINVAL
	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 (
	modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")

	procQueryServiceConfig2W = modadvapi32.NewProc("QueryServiceConfig2W")
	procRegEnumValueW        = modadvapi32.NewProc("RegEnumValueW")
)

func queryServiceConfig2(hService windows.Handle, infoLevel uint32, buf *byte, bufLen uint32, bytesNeeded *uint32) (err error) {
	r1, _, e1 := syscall.Syscall6(procQueryServiceConfig2W.Addr(), 5, uintptr(hService), uintptr(infoLevel), uintptr(unsafe.Pointer(buf)), uintptr(bufLen), uintptr(unsafe.Pointer(bytesNeeded)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func regEnumValue(key registry.Key, index uint32, valueName *uint16, valueNameLen *uint32, reserved *uint32, valueType *uint32, pData *byte, cbData *uint32) (ret error) {
	r0, _, _ := syscall.Syscall9(procRegEnumValueW.Addr(), 8, uintptr(key), uintptr(index), uintptr(unsafe.Pointer(valueName)), uintptr(unsafe.Pointer(valueNameLen)), uintptr(unsafe.Pointer(reserved)), uintptr(unsafe.Pointer(valueType)), uintptr(unsafe.Pointer(pData)), uintptr(unsafe.Pointer(cbData)), 0)
	if r0 != 0 {
		ret = syscall.Errno(r0)
	}
	return
}