} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
	n = int(r0)
	if int32(r0) == -1 {
		err = e1
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Close(fd int) (err error) {
	r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
	if int32(r0) == -1 {
		err = e1

//go:build linux && s390x && gc

#include "textflag.h"

//
// System calls for s390x, Linux
//

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT ·Syscall(SB),NOSPLIT,$0-56
	BR	syscall·Syscall(SB)

TEXT ·Syscall6(SB),NOSPLIT,$0-80
	BR	syscall·Syscall6(SB)

TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
	BL	runtime·entersyscall(SB)
	MOVD	a1+8(FP), R2

func Issetugid() (tainted bool) {
	r0, _, _ := Syscall(SYS_ISSETUGID, 0, 0, 0)
	tainted = bool(r0 != 0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Kill(pid int, signum syscall.Signal) (err error) {
	_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return

func Issetugid() (tainted bool) {
	r0, _, _ := Syscall(SYS_ISSETUGID, 0, 0, 0)
	tainted = bool(r0 != 0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Kill(pid int, signum syscall.Signal) (err error) {
	_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return

		var s syscall.Handle
		s, sendRecvMsgFunc.err = syscall.Socket(syscall.AF_INET, syscall.SOCK_DGRAM, syscall.IPPROTO_UDP)
		if sendRecvMsgFunc.err != nil {
			return
		}
		defer syscall.CloseHandle(s)
		var n uint32
		sendRecvMsgFunc.err = syscall.WSAIoctl(s,
			syscall.SIO_GET_EXTENSION_FUNCTION_POINTER,
			(*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)),
			uint32(unsafe.Sizeof(WSAID_WSARECVMSG)),

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
	MOVD	num+0(FP), R8	// syscall entry
	MOVD	a1+8(FP), R0
	MOVD	a2+16(FP), R1
	MOVD	a3+24(FP), R2
	MOVD	a4+32(FP), R3
	MOVD	a5+40(FP), R4
	MOVD	a6+48(FP), R5
	SVC
	CMN	$4095, R0

	libc_Getpgrp libcFunc
)

func Getpgid(pid int) (pgid int, err error) {
	r0, _, e1 := syscall6(uintptr(unsafe.Pointer(&libc_Getpgid)), 1, uintptr(pid), 0, 0, 0, 0, 0)
	pgid = int(r0)
	if e1 != 0 {
		err = e1
	}
	return
}

func Getpgrp() (pgrp int) {
	r0, _, _ := syscall6(uintptr(unsafe.Pointer(&libc_Getpgrp)), 0, 0, 0, 0, 0, 0, 0)
	pgrp = int(r0)
	return
}

func Tcgetpgrp(fd int) (pgid int32, err error) {

}

func (msghdr *Msghdr) SetIovlen(length int) {
	msghdr.Iovlen = int32(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = uint32(length)
}

func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)

//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64

func Issetugid() (tainted bool) {
	r0, _, _ := Syscall(SYS_ISSETUGID, 0, 0, 0)
	tainted = bool(r0 != 0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Kill(pid int, signum syscall.Signal) (err error) {
	_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return

	_, _, e1 := Syscall6(SYS_PTRACE, uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func ptracePtr(request int, pid int, addr uintptr, data unsafe.Pointer) (err error) {