}
		if n == 0 {
			return nn, io.ErrUnexpectedEOF
		}
	}
}

// Pwrite wraps the pwrite system call.
func (fd *FD) Pwrite(p []byte, off int64) (int, error) {
	// Call incref, not writeLock, because since pwrite specifies the
	// offset it is independent from other writes.
	// Similarly, using the poller doesn't make sense for pwrite.
	if err := fd.incref(); err != nil {
		return 0, err
	}
	defer fd.decref()

	return pread(fd, buf, n, -1)
}

//go:nosplit
func write1(fd uintptr, buf unsafe.Pointer, n int32) int32 {
	return pwrite(int32(fd), buf, n, -1)
}

var _badsignal = []byte("runtime: signal received on thread not created by Go.\n")

// This runs on a foreign stack, without an m or a g. No stack split.
//
//go:nosplit
func badsignal2() {
	pwrite(2, unsafe.Pointer(&_badsignal[0]), int32(len(_badsignal)), -1)

		return 0, nil
	}
	return fixCount(syscall.Write(f.fd, b))
}

// pwrite writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an error, if any.
// Since Plan 9 preserves message boundaries, never allow
// a zero-byte write.
func (f *File) pwrite(b []byte, off int64) (n int, err error) {
	if err := f.writeLock(); err != nil {
		return 0, err
	}

		}
	}
	if msan.Enabled && n > 0 {
		msan.Write(unsafe.Pointer(&p[0]), uintptr(n))
	}
	if asan.Enabled && n > 0 {
		asan.Write(unsafe.Pointer(&p[0]), uintptr(n))
	}
	return
}

func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
	if race.Enabled {
		race.ReleaseMerge(unsafe.Pointer(&ioSync))
	}
	n, err = pwrite(fd, p, offset)
	if race.Enabled && n > 0 {

//sys	Umask(newmask int) (oldmask int)
//sys	Undelete(path string) (err error)
//sys	Unlink(path string) (err error)
//sys	Unmount(path string, flags int) (err error)
//sys	write(fd int, p []byte) (n int, err error)
//sys	writev(fd int, iovecs []Iovec) (cnt uintptr, err error)
//sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)

//sys	Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
//sys	Pathconf(path string, name int) (val int, err error)
//sys	pread(fd int, p []byte, offset int64) (n int, err error)
//sys	pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys	read(fd int, p []byte) (n int, err error)
//sys	Readlink(path string, buf []byte) (n int, err error)
//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)

//sys	socket(domain int, typ int, proto int) (fd int, err error) = libsocket.__xnet_socket
//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) = libsocket.__xnet_socketpair
//sys	write(fd int, p []byte) (n int, err error)
//sys	writev(fd int, iovecs []Iovec) (n uintptr, err error)
//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) = libsocket.__xnet_getsockopt

//sys	Truncate(path string, length int64) (err error)
//sys	Umask(newmask int) (oldmask int)
//sys	Unlink(path string) (err error)
//sysnb	Uname(buf *Utsname) (err error)
//sys	write(fd int, p []byte) (n int, err error)
//sys	writev(fd int, iovecs []Iovec) (n uintptr, err error)

//sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}

	n = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_write_trampoline()

//go:cgo_import_dynamic libc_write write "libc.so"

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

func writev(fd int, iovecs []Iovec) (n uintptr, err error) {
	var _p0 unsafe.Pointer
	if len(iovecs) > 0 {
		_p0 = unsafe.Pointer(&iovecs[0])
	} else {

//go:cgo_import_dynamic libc_Umask umask "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Unlink unlink "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Uname uname "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_write write "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_writev writev "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_gettimeofday gettimeofday "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_mmap mmap "libc.a/shr_64.o"