return new byte[BUFFER_SIZE];
  }

  /**
   * There are three methods to implement {@link FileChannel#transferTo(long, long,
   * WritableByteChannel)}:
   *
   * <ol>
   *   <li>Use sendfile(2) or equivalent. Requires that both the input channel and the output
   *       channel have their own file descriptors. Generally this only happens when both channels

	SYS_LCHFLAGS                 = 391 // { int lchflags(const char *path, u_long flags); }
	SYS_UUIDGEN                  = 392 // { int uuidgen(struct uuid *store, int count); }
	SYS_SENDFILE                 = 393 // { int sendfile(int fd, int s, off_t offset, size_t nbytes, struct sf_hdtr *hdtr, off_t *sbytes, int flags); }
	SYS_MAC_SYSCALL              = 394 // { int mac_syscall(const char *policy, int call, void *arg); }

	return
}

var libc_sysctl_trampoline_addr uintptr

//go:cgo_import_dynamic libc_sysctl sysctl "/usr/lib/libSystem.B.dylib"

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

func sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error) {

	return mountSetattr(dirfd, pathname, flags, attr, unsafe.Sizeof(*attr))
}

func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	if raceenabled {
		raceReleaseMerge(unsafe.Pointer(&ioSync))
	}
	return sendfile(outfd, infd, offset, count)
}

// Sendto
// Recvfrom
// Socketpair

/*
 * Direct access
 */

	ReadFile(name string) ([]byte, error)
}

// ReadFile reads the named file from the file system fs and returns its contents.
// A successful call returns a nil error, not [io.EOF].
// (Because ReadFile reads the whole file, the expected EOF
// from the final Read is not treated as an error to be reported.)
//
// If fs implements [ReadFileFS], ReadFile calls fs.ReadFile.

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

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

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	r0, _, e1 := Syscall6(SYS_SENDFILE, uintptr(outfd), uintptr(infd), uintptr(unsafe.Pointer(offset)), uintptr(count), 0, 0)
	written = int(r0)

        def file = tmpDir.createFile("thing.txt")
        file.text = "123"

        given:
        server.expect(server.get("a"))
        server.expect(server.get("b").sendFile(file))
        server.expect(server.get("c").send("this is the content"))
        server.start()

        when:
        server.uri("a").toURL().text == ""
        server.uri("b").toURL().text == "123"

	off = int64(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

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

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	r0, _, e1 := Syscall6(SYS_SENDFILE, uintptr(outfd), uintptr(infd), uintptr(unsafe.Pointer(offset)), uintptr(count), 0, 0)
	written = int(r0)

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

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

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	r0, _, e1 := Syscall6(SYS_SENDFILE64, uintptr(outfd), uintptr(infd), uintptr(unsafe.Pointer(offset)), uintptr(count), 0, 0)
	written = int(r0)

	off = int64(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

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

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	r0, _, e1 := Syscall6(SYS_SENDFILE, uintptr(outfd), uintptr(infd), uintptr(unsafe.Pointer(offset)), uintptr(count), 0, 0)
	written = int(r0)