#include <string.h>

static struct passwd mygetpwuid_r(int uid, char *buf, size_t buflen, int *found, int *perr) {
	struct passwd pwd;
	struct passwd *result;
	memset (&pwd, 0, sizeof(pwd));
	*perr = getpwuid_r(uid, &pwd, buf, buflen, &result);
	*found = result != NULL;
	return pwd;
}

static struct passwd mygetpwnam_r(const char *name, char *buf, size_t buflen, int *found, int *perr) {
	struct passwd pwd;
	struct passwd *result;

		data   string
		off    int
		n      int
		bufLen int
		at     int
		exp    string
		err    error
	}{
		{data: "", off: 0, n: 10, bufLen: 2, at: 0, exp: "", err: EOF},
		{data: dat, off: 0, n: len(dat), bufLen: 0, at: 0, exp: "", err: nil},
		{data: dat, off: len(dat), n: 1, bufLen: 1, at: 0, exp: "", err: EOF},
		{data: dat, off: 0, n: len(dat) + 2, bufLen: len(dat), at: 0, exp: dat, err: nil},

//sys	regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegEnumValueW
//sys	regDeleteValue(key syscall.Handle, name *uint16) (regerrno error) = advapi32.RegDeleteValueW
//sys   regLoadMUIString(key syscall.Handle, name *uint16, buf *uint16, buflen uint32, buflenCopied *uint32, flags uint32, dir *uint16) (regerrno error) = advapi32.RegLoadMUIStringW

func AdjustTokenPrivileges(token syscall.Token, disableAllPrivileges bool, newstate *TOKEN_PRIVILEGES, buflen uint32, prevstate *TOKEN_PRIVILEGES, returnlen *uint32) error {
	ret, err := adjustTokenPrivileges(token, disableAllPrivileges, newstate, buflen, prevstate, returnlen)
	if ret == 0 {

func (out *OutBuf) copyHeap() bool {
	if !out.isMmapped() { // only valuable for mmapped OutBufs.
		return false
	}
	if out.isView {
		panic("can't copyHeap a view")
	}

	bufLen := len(out.buf)
	heapLen := len(out.heap)
	total := uint64(bufLen + heapLen)
	if heapLen != 0 {
		if err := out.Mmap(total); err != nil { // Mmap will copy out.heap over to out.buf
			Exitf("mapping output file failed: %v", err)
		}
	}

		err = regLoadMUIString(syscall.Handle(k), pname, &buf[0], uint32(len(buf)), &buflen, 0, pdir)
	}

	for err == syscall.ERROR_MORE_DATA { // Grow buffer if needed
		if buflen <= uint32(len(buf)) {
			break // Buffer not growing, assume race; break
		}
		buf = make([]uint16, buflen)
		err = regLoadMUIString(syscall.Handle(k), pname, &buf[0], uint32(len(buf)), &buflen, 0, pdir)
	}

	if err != nil {
		return "", err
	}

	clockMonotonic clockid = 1
)

// https://github.com/WebAssembly/WASI/blob/a2b96e81c0586125cc4dc79a5be0b78d9a059925/legacy/preview1/docs.md#-iovec-record
type iovec struct {
	buf    uintptr32
	bufLen size
}

//go:wasmimport wasi_snapshot_preview1 proc_exit
func exit(code int32)

//go:wasmimport wasi_snapshot_preview1 args_get
//go:noescape
func args_get(argv, argvBuf unsafe.Pointer) errno

// errors cause a `false` result. A string describing the error is
// also returned.
func cmpReaders(r1, r2 io.Reader) (bool, string) {
	bufLen := 32 * 1024
	b1, b2 := make([]byte, bufLen), make([]byte, bufLen)
	for i := 0; true; i++ {
		n1, e1 := io.ReadFull(r1, b1)
		n2, e2 := io.ReadFull(r2, b2)
		if n1 != n2 {
			return false, fmt.Sprintf("Read %d != %d bytes from the readers", n1, n2)

	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) {
	r1, _, e1 := Syscall(procCryptGenRandom.Addr(), 3, uintptr(provhandle), uintptr(buflen), uintptr(unsafe.Pointer(buf)))
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

	var _p0 uint32
	if disableAllPrivileges {
		_p0 = 1
	}
	r0, _, e1 := syscall.Syscall6(procAdjustTokenPrivileges.Addr(), 6, uintptr(token), uintptr(_p0), uintptr(unsafe.Pointer(newstate)), uintptr(buflen), uintptr(unsafe.Pointer(prevstate)), uintptr(unsafe.Pointer(returnlen)))