1/*-
2 * Copyright (c) 2016 Eric McCorkle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef _INTAKE_H_
28#define _INTAKE_H_
29
30#include  <sys/param.h>
31
32/*
33 * This file provides an interface for providing keys to the kernel
34 * during boot time.
35 */
36
37#define MAX_KEY_BITS	4096
38#define	MAX_KEY_BYTES	(MAX_KEY_BITS / NBBY)
39
40#define KEYBUF_SENTINEL	0xcee54b5d	/* KEYS4BSD */
41
42enum {
43        KEYBUF_TYPE_NONE,
44        KEYBUF_TYPE_GELI
45};
46
47struct keybuf_ent {
48        unsigned int ke_type;
49        char ke_data[MAX_KEY_BYTES];
50};
51
52struct keybuf {
53        unsigned int kb_nents;
54        struct keybuf_ent kb_ents[];
55};
56
57#ifdef _KERNEL
58/* Get the key intake buffer */
59extern struct keybuf* get_keybuf(void);
60#endif
61
62#endif
63