sys/crypto/intake.h

   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
  42 enum {
  43         KEYBUF_TYPE_NONE,
  44         KEYBUF_TYPE_GELI
  45 };
  46
  47 struct keybuf_ent {
  48         unsigned int ke_type;
  49         char ke_data[MAX_KEY_BYTES];
  50 };
  51
  52 struct keybuf {
  53         unsigned int kb_nents;
  54         struct keybuf_ent kb_ents[];
  55 };
  56
  57 #ifdef _KERNEL
  58 /* Get the key intake buffer */
  59 extern struct keybuf* get_keybuf(void);
  60 #endif
  61
  62 #endif