}
}

// dupCloseOnExecOld always errors on wasip1 because there is no mechanism to
// duplicate file descriptors.
func dupCloseOnExecOld(fd int) (int, string, error) {
	return -1, "dup", syscall.ENOSYS
}

// Fchdir wraps syscall.Fchdir.
func (fd *FD) Fchdir() error {
	if err := fd.incref(); err != nil {
		return err
	}
	defer fd.decref()
	return syscall.Chdir(fd.Path)
}

	ENONET          = syscall.Errno(0x40)
	ENOPKG          = syscall.Errno(0x41)
	ENOPROTOOPT     = syscall.Errno(0x5c)
	ENOSR           = syscall.Errno(0x3f)
	ENOSTR          = syscall.Errno(0x3c)
	ENOSYS          = syscall.Errno(0x26)
	ENOTCONN        = syscall.Errno(0x6b)
	ENOTEMPTY       = syscall.Errno(0x27)
	ENOTNAM         = syscall.Errno(0x76)
	ENOTRECOVERABLE = syscall.Errno(0x83)

	ENONET          = syscall.Errno(0x40)
	ENOPKG          = syscall.Errno(0x41)
	ENOPROTOOPT     = syscall.Errno(0x5c)
	ENOSR           = syscall.Errno(0x3f)
	ENOSTR          = syscall.Errno(0x3c)
	ENOSYS          = syscall.Errno(0x26)
	ENOTCONN        = syscall.Errno(0x6b)
	ENOTEMPTY       = syscall.Errno(0x27)
	ENOTNAM         = syscall.Errno(0x76)
	ENOTRECOVERABLE = syscall.Errno(0x83)

		r0, err := unix.Fcntl(fd, syscall.F_DUPFD_CLOEXEC, 0)
		if err == nil {
			return r0, "", nil
		}
		switch err {
		case syscall.EINVAL, syscall.ENOSYS:
			// Old kernel, or js/wasm (which returns
			// ENOSYS). Fall back to the portable way from
			// now on.
			dupCloexecUnsupported.Store(true)
		default:
			return -1, "fcntl", err
		}
	}
	return dupCloseOnExecOld(fd)
}

}

func Gettimeofday(tv *Timeval) (err error) {
	err = gettimeofday(tv, nil)
	return
}

// TODO
func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	return -1, ENOSYS
}

//sys	getdirent(fd int, buf []byte) (n int, err error)

func ReadDirent(fd int, buf []byte) (n int, err error) {
	return getdirent(fd, buf)
}

	mnext        int64    // number of m's that have been created and next M ID
	maxmcount    int32    // maximum number of m's allowed (or die)
	nmsys        int32    // number of system m's not counted for deadlock
	nmfreed      int64    // cumulative number of freed m's

	ngsys atomic.Int32 // number of system goroutines

	pidle        puintptr // idle p's
	npidle       atomic.Int32

		run0 = 1
	}

	run := mcount() - sched.nmidle - sched.nmidlelocked - sched.nmsys
	if run > run0 {
		return
	}
	if run < 0 {
		print("runtime: checkdead: nmidle=", sched.nmidle, " nmidlelocked=", sched.nmidlelocked, " mcount=", mcount(), " nmsys=", sched.nmsys, "\n")
		unlock(&sched.lock)
		throw("checkdead: inconsistent counts")
	}

	grunning := 0

	if runtime.GOOS != "android" {
		if err := faccessat2(dirfd, path, mode, flags); err != ENOSYS && err != EPERM {
			return err
		}
	}

	// The Linux kernel faccessat system call does not take any flags.
	// The glibc faccessat implements the flags itself; see

	ENODEV             = Errno(128)
	ENOENT             = Errno(129)
	ENOEXEC            = Errno(130)
	ENOLCK             = Errno(131)
	ENOMEM             = Errno(132)
	ENOSPC             = Errno(133)
	ENOSYS             = Errno(134)
	ENOTDIR            = Errno(135)
	ENOTEMPTY          = Errno(136)
	ENOTTY             = Errno(137)
	ENXIO              = Errno(138)
	EPERM              = Errno(139)

	ENONET          = Errno(0x40)
	ENOPKG          = Errno(0x41)
	ENOPROTOOPT     = Errno(0x63)
	ENOSPC          = Errno(0x1c)
	ENOSR           = Errno(0x3f)
	ENOSTR          = Errno(0x3c)
	ENOSYS          = Errno(0x59)
	ENOTACTIVE      = Errno(0x49)
	ENOTBLK         = Errno(0xf)
	ENOTCONN        = Errno(0x86)
	ENOTDIR         = Errno(0x14)
	ENOTEMPTY       = Errno(0x5d)
	ENOTRECOVERABLE = Errno(0x3b)