)

const (
	Sys_GETEUID = sys_GETEUID
)

func Tcgetpgrp(fd int) (pgid int32, err error) {
	_, _, errno := Syscall6(SYS_IOCTL, uintptr(fd), uintptr(TIOCGPGRP), uintptr(unsafe.Pointer(&pgid)), 0, 0, 0)
	if errno != 0 {
		return -1, errno
	}
	return pgid, nil
}

func Tcsetpgrp(fd int, pgid int32) (err error) {
	_, _, errno := Syscall6(SYS_IOCTL, uintptr(fd), uintptr(TIOCSPGRP), uintptr(unsafe.Pointer(&pgid)), 0, 0, 0)

		}
		println("runtime: netpoll: break fd ready for", ev.filter)
		throw("runtime: netpoll: break fd ready for something unexpected")
	}
	return false
}

func drainWakeupEvent(_ int32) {
	var buf [16]byte
	read(int32(netpollBreakRd), noescape(unsafe.Pointer(&buf[0])), int32(len(buf)))
}

func netpollIsPollDescriptor(fd uintptr) bool {
	return fd == uintptr(kq) || fd == netpollBreakRd || fd == netpollBreakWr

	"runtime"
	"sync"
	"sync/atomic"
	"testing"
	"time"
)

var closeHook atomic.Value // func(fd int)

func init() {
	closeFunc := poll.CloseFunc
	poll.CloseFunc = func(fd int) (err error) {
		if v := closeHook.Load(); v != nil {
			if hook := v.(func(int)); hook != nil {
				hook(fd)
			}
		}
		return closeFunc(fd)
	}
}

func TestSplicePipePool(t *testing.T) {
	const N = 64
	var (

		println("runtime: epollctl failed with", errno)
		throw("runtime: epollctl failed")
	}
	netpollEventFd = uintptr(efd)
}

func netpollIsPollDescriptor(fd uintptr) bool {
	return fd == uintptr(epfd) || fd == netpollEventFd
}

func netpollopen(fd uintptr, pd *pollDesc) uintptr {
	var ev syscall.EpollEvent
	ev.Events = syscall.EPOLLIN | syscall.EPOLLOUT | syscall.EPOLLRDHUP | syscall.EPOLLET

		if err != nil {
			t.Fatalf("writefile: %v", err)
		}
	}

	names := make([]string, 0, 10)

	fd, err := syscall.Open(d, syscall.O_RDONLY, 0)
	if err != nil {
		t.Fatalf("syscall.open: %v", err)
	}
	defer syscall.Close(fd)

	buf := bytes.Repeat([]byte{0xCD}, direntBufSize)
	for {
		n, err := syscall.ReadDirent(fd, buf)
		if err == syscall.EINVAL {

		}
		defer c.Close()

		if errHook != nil {
			t.Fatal(errHook)
		}

		sc, err := c.(*TCPConn).SyscallConn()
		if err != nil {
			t.Fatal(err)
		}
		if err := sc.Control(func(fd uintptr) {
			verifyKeepAliveSettings(t, fdType(fd), oldCfg, cfg)
		}); err != nil {
			t.Fatal(err)
		}
	}
}

func TestTCPConnKeepAliveConfigListener(t *testing.T) {
	maybeSkipKeepAliveTest(t)

	t.Cleanup(func() {

	return int32(r1), e
}

func EpollCtl(epfd, op, fd int32, event *EpollEvent) (errno uintptr) {
	_, _, e := Syscall6(SYS_EPOLL_CTL, uintptr(epfd), uintptr(op), uintptr(fd), uintptr(unsafe.Pointer(event)), 0, 0)
	return e
}

func Eventfd(initval, flags int32) (fd int32, errno uintptr) {
	r1, _, e := Syscall6(SYS_EVENTFD2, uintptr(initval), uintptr(flags), 0, 0, 0, 0)

package unix

import (
	"syscall"
	"unsafe"
)

//go:linkname ioctlPtr syscall.ioctlPtr
func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error)

// Note that pgid should really be pid_t, however _C_int (aka int32) is
// generally equivalent.

func Tcsetpgrp(fd int, pgid int32) (err error) {
	return ioctlPtr(fd, syscall.TIOCSPGRP, unsafe.Pointer(&pgid))

// license that can be found in the LICENSE file.

//go:build darwin || zos

package unix

import "unsafe"

// ReadDirent reads directory entries from fd and writes them into buf.
func ReadDirent(fd int, buf []byte) (n int, err error) {
	// Final argument is (basep *uintptr) and the syscall doesn't take nil.
	// 64 bits should be enough. (32 bits isn't even on 386). Since the

// See go.dev/issue/67401.
//
//go:linkname overrideWrite
var overrideWrite func(fd uintptr, p unsafe.Pointer, n int32) int32

// write must be nosplit on Windows (see write1)
//
//go:nosplit
func write(fd uintptr, p unsafe.Pointer, n int32) int32 {
	if overrideWrite != nil {
		return overrideWrite(fd, noescape(p), n)
	}
	return write1(fd, p, n)