NetBSD/sys/dev/cgdvar.h

91 lines
3.1 KiB
C

/* $NetBSD: cgdvar.h,v 1.12 2008/09/12 16:51:55 christos Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roland C. Dowdeswell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DEV_CGDVAR_H_
#define _DEV_CGDVAR_H_
#include <sys/simplelock.h>
/* ioctl(2) code */
struct cgd_ioctl {
const char *ci_disk;
int ci_flags;
int ci_unit;
size_t ci_size;
const char *ci_alg;
const char *ci_ivmethod;
size_t ci_keylen;
const char *ci_key;
size_t ci_blocksize;
};
#ifdef _KERNEL
#include <dev/cgd_crypto.h>
/* This cryptdata structure is here rather than cgd_crypto.h, since
* it stores local state which will not be generalised beyond the
* cgd driver.
*/
struct cryptdata {
size_t cf_blocksize; /* block size (in bytes) */
int cf_mode; /* Cipher Mode and IV Gen method */
#define CGD_CIPHER_CBC_ENCBLKNO8 1 /* CBC Mode w/ Enc Block Number
* 8 passes (compat only)
*/
#define CGD_CIPHER_CBC_ENCBLKNO1 2 /* CBC Mode w/ Enc Block Number
* 1 pass (default)
*/
void *cf_priv; /* enc alg private data */
};
struct cgd_softc {
struct dk_softc sc_dksc; /* generic disk interface */
struct cryptinfo *sc_crypt; /* the alg/key/etc */
struct vnode *sc_tvn; /* target device's vnode */
dev_t sc_tdev; /* target device */
char *sc_tpath; /* target device's path */
void * sc_data; /* emergency buffer */
int sc_data_used; /* Really lame, we'll change */
size_t sc_tpathlen; /* length of prior string */
struct cryptdata sc_cdata; /* crypto data */
struct cryptfuncs *sc_cfuncs; /* encryption functions */
struct simplelock sc_slock; /* our lock */
};
#endif
/* XXX XAX XXX elric: check these out properly. */
#define CGDIOCSET _IOWR('F', 18, struct cgd_ioctl)
#define CGDIOCCLR _IOW('F', 19, struct cgd_ioctl)
#endif /* _DEV_CGDVAR_H_ */