99c563ccca
the drvctl framework. And call this new functionality from cgd(4), the consumer of dksubr.c. We do this to allow gpt(8) to be able to label cgd(4) disks. We also add in some DIOCGSECTORSIZE logic and we ensure that the WEDGE ioctls are not called on either uninitialised disks or disks which have not been opened for write access.
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/* $NetBSD: cgdvar.h,v 1.15 2012/05/25 10:53:46 elric Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roland C. Dowdeswell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_CGDVAR_H_
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#define _DEV_CGDVAR_H_
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#include <sys/simplelock.h>
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/* ioctl(2) code */
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struct cgd_ioctl {
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const char *ci_disk;
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int ci_flags;
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int ci_unit;
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size_t ci_size;
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const char *ci_alg;
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const char *ci_ivmethod;
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size_t ci_keylen;
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const char *ci_key;
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size_t ci_blocksize;
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};
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#ifdef _KERNEL
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#include <dev/cgd_crypto.h>
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/* This cryptdata structure is here rather than cgd_crypto.h, since
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* it stores local state which will not be generalised beyond the
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* cgd driver.
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*/
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struct cryptdata {
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size_t cf_blocksize; /* block size (in bytes) */
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int cf_mode; /* Cipher Mode and IV Gen method */
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#define CGD_CIPHER_CBC_ENCBLKNO8 1 /* CBC Mode w/ Enc Block Number
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* 8 passes (compat only)
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*/
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#define CGD_CIPHER_CBC_ENCBLKNO1 2 /* CBC Mode w/ Enc Block Number
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* 1 pass (default)
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*/
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void *cf_priv; /* enc alg private data */
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};
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struct cgd_softc {
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struct dk_softc sc_dksc; /* generic disk interface */
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struct cryptinfo *sc_crypt; /* the alg/key/etc */
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struct vnode *sc_tvn; /* target device's vnode */
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dev_t sc_tdev; /* target device */
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char *sc_tpath; /* target device's path */
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void * sc_data; /* emergency buffer */
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int sc_data_used; /* Really lame, we'll change */
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size_t sc_tpathlen; /* length of prior string */
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struct cryptdata sc_cdata; /* crypto data */
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struct cryptfuncs *sc_cfuncs; /* encryption functions */
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struct simplelock sc_slock; /* our lock */
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};
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#endif
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/* XXX XAX XXX elric: check these out properly. */
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#define CGDIOCSET _IOWR('F', 18, struct cgd_ioctl)
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#define CGDIOCCLR _IOW('F', 19, struct cgd_ioctl)
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/* Maximum block sized to be used by the ciphers */
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#define CGD_MAXBLOCKSIZE 128
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#endif /* _DEV_CGDVAR_H_ */
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