if e1 != e {
		a, e2 := syscall.GetFileAttributes(p)
		if e2 != nil {
			e = e2
		} else {
			if a&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
				e = e1
			} else if a&syscall.FILE_ATTRIBUTE_READONLY != 0 {
				if e1 = syscall.SetFileAttributes(p, a&^syscall.FILE_ATTRIBUTE_READONLY); e1 == nil {
					if e = syscall.DeleteFile(p); e == nil {
						return nil
					}
				}
			}

	if raddr != nil && ctrlCtxFn != nil {
		return nil, os.NewSyscallError("socket", syscall.ENOTSUP)
	}
	switch sotype {
	case syscall.SOCK_STREAM, syscall.SOCK_SEQPACKET, syscall.SOCK_DGRAM:
	default:
		return nil, os.NewSyscallError("socket", syscall.ENOTSUP)
	}

	fd := &netFD{
		family: family,
		sotype: sotype,

const DevNull = "/dev/null"

// syscallMode returns the syscall-specific mode bits from Go's portable mode bits.
func syscallMode(i FileMode) (o uint32) {
	o |= uint32(i.Perm())
	if i&ModeAppend != 0 {
		o |= syscall.DMAPPEND
	}
	if i&ModeExclusive != 0 {
		o |= syscall.DMEXCL
	}
	if i&ModeTemporary != 0 {
		o |= syscall.DMTMP
	}
	return
}

	c2 := make(chan os.Signal, 1)
	Notify(c2, syscall.SIGHUP)
	defer Stop(c2)

	// Send this process a SIGWINCH and wait for notification on c1.
	syscall.Kill(syscall.Getpid(), syscall.SIGWINCH)
	waitSig(t, c1, syscall.SIGWINCH)

	// Send this process a SIGHUP and wait for notification on c2.
	syscall.Kill(syscall.Getpid(), syscall.SIGHUP)
	waitSig(t, c2, syscall.SIGHUP)

package user

import (
	"fmt"
	"internal/syscall/windows"
	"internal/syscall/windows/registry"
	"syscall"
	"unsafe"
)

func isDomainJoined() (bool, error) {
	var domain *uint16
	var status uint32
	err := syscall.NetGetJoinInformation(nil, &domain, &status)
	if err != nil {
		return false, err
	}
	syscall.NetApiBufferFree((*byte)(unsafe.Pointer(domain)))
	return status == syscall.NetSetupDomainName, nil
}

	// nanosleep(&ts, 0)
	ADDV	$8, R29, R4
	MOVW	$0, R5
	MOVV	$SYS_nanosleep, R2
	SYSCALL
	RET

TEXT runtime·gettid(SB),NOSPLIT,$0-4
	MOVV	$SYS_gettid, R2
	SYSCALL
	MOVW	R2, ret+0(FP)
	RET

TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0
	MOVV	$SYS_getpid, R2
	SYSCALL
	MOVW	R2, R16
	MOVV	$SYS_gettid, R2
	SYSCALL
	MOVW	R2, R5	// arg 2 tid
	MOVW	R16, R4	// arg 1 pid
	MOVW	sig+0(FP), R6	// arg 3

	// nanosleep(&ts, 0)
	ADD	$8, R15, R2
	MOVW	$0, R3
	MOVW	$SYS_nanosleep, R1
	SYSCALL
	RET

TEXT runtime·gettid(SB),NOSPLIT,$0-4
	MOVW	$SYS_gettid, R1
	SYSCALL
	MOVW	R2, ret+0(FP)
	RET

TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0
	MOVW	$SYS_getpid, R1
	SYSCALL
	MOVW	R2, R10
	MOVW	$SYS_gettid, R1
	SYSCALL
	MOVW	R2, R3	// arg 2 tid
	MOVW	R10, R2	// arg 1 pid
	MOVW	sig+0(FP), R4	// arg 2

	MOVL	AX, ret+0(FP)
	RET

TEXT runtime·raise(SB),NOSPLIT,$0
	MOVL	$SYS_getpid, AX
	SYSCALL
	MOVL	AX, R12
	MOVL	$SYS_gettid, AX
	SYSCALL
	MOVL	AX, SI	// arg 2 tid
	MOVL	R12, DI	// arg 1 pid
	MOVL	sig+0(FP), DX	// arg 3
	MOVL	$SYS_tgkill, AX
	SYSCALL
	RET

TEXT runtime·raiseproc(SB),NOSPLIT,$0
	MOVL	$SYS_getpid, AX
	SYSCALL
	MOVL	AX, DI	// arg 1 pid
	MOVL	sig+0(FP), SI	// arg 2

		t.Skipf("syscall.Pipe is not available on %s.", runtime.GOOS)
	}

	p := make([]int, 2)
	if err := syscall.Pipe(p); err != nil {
		t.Fatalf("pipe: %v", err)
	}
	defer syscall.Close(p[1])

	// Set the read-side to non-blocking.
	if !blocking {
		if err := syscall.SetNonblock(p[0], true); err != nil {
			syscall.Close(p[0])
			t.Fatalf("SetNonblock: %v", err)
		}

				if g.lastRunnableTime != 0 {
					g.SchedWaitTime += ev.Time().Sub(g.lastRunnableTime)
					g.lastRunnableTime = 0
				}
			case GoSyscall:
				// Record syscall execution time and syscall block time as we transition out of syscall.
				if g.lastSyscallTime != 0 {
					if g.lastSyscallBlockTime != 0 {
						g.SyscallBlockTime += ev.Time().Sub(g.lastSyscallBlockTime)