tailscale/util/winutil/zsyscall_windows.go

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

package winutil

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)
	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 (
	moddnsapi = windows.NewLazySystemDLL("dnsapi.dll")

	procDnsCancelQuery = moddnsapi.NewProc("DnsCancelQuery")
	procDnsQueryEx     = moddnsapi.NewProc("DnsQueryEx")
)

func DnsCancelQuery(cancelHandle *DNSQueryCancel) (status error) {
	r0, _, _ := syscall.Syscall(procDnsCancelQuery.Addr(), 1, uintptr(unsafe.Pointer(cancelHandle)), 0, 0)
	if r0 != 0 {
		status = syscall.Errno(r0)
	}
	return
}

func DnsQueryEx(request *DNSQueryRequest, result *DNSQueryResult, cancelHandle *DNSQueryCancel) (status error) {
	r0, _, _ := syscall.Syscall(procDnsQueryEx.Addr(), 3, uintptr(unsafe.Pointer(request)), uintptr(unsafe.Pointer(result)), uintptr(unsafe.Pointer(cancelHandle)))
	if r0 != 0 {
		status = syscall.Errno(r0)
	}
	return
}