FreeBSD/Linux Kernel Cross Reference
sys/dev/cgdvar.h
1 /* $NetBSD: cgdvar.h,v 1.3 2004/08/23 04:45:18 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Roland C. Dowdeswell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _DEV_CGDVAR_H_
40 #define _DEV_CGDVAR_H_
41
42 /* ioctl(2) code */
43 struct cgd_ioctl {
44 char *ci_disk;
45 int ci_flags;
46 int ci_unit;
47 size_t ci_size;
48 char *ci_alg;
49 char *ci_ivmethod;
50 size_t ci_keylen;
51 char *ci_key;
52 size_t ci_blocksize;
53 };
54
55 #ifdef _KERNEL
56
57 #include <dev/cgd_crypto.h>
58
59 /* This cryptdata structure is here rather than cgd_crypto.h, since
60 * it stores local state which will not be generalised beyond the
61 * cgd driver.
62 */
63
64 struct cryptdata {
65 int cf_blocksize; /* block size (in bytes) */
66 int cf_mode; /* Cipher Mode and IV Gen method */
67 #define CGD_CIPHER_CBC_ENCBLKNO 1 /* CBC Mode w/ Enc Block Number */
68 void *cf_priv; /* enc alg private data */
69 };
70
71 struct cgd_softc {
72 struct dk_softc sc_dksc; /* generic disk interface */
73 struct cryptinfo *sc_crypt; /* the alg/key/etc */
74 struct vnode *sc_tvn; /* target device's vnode */
75 dev_t sc_tdev; /* target device */
76 char *sc_tpath; /* target device's path */
77 caddr_t sc_data; /* emergency buffer */
78 int sc_data_used; /* Really lame, we'll change */
79 size_t sc_tpathlen; /* length of prior string */
80 struct cryptdata sc_cdata; /* crypto data */
81 struct cryptfuncs *sc_cfuncs; /* encryption functions */
82 struct simplelock sc_slock; /* our lock */
83 };
84 #endif
85
86 /* XXX XAX XXX elric: check these out properly. */
87 #define CGDIOCSET _IOWR('F', 18, struct cgd_ioctl)
88 #define CGDIOCCLR _IOW('F', 19, struct cgd_ioctl)
89
90 #endif /* _DEV_CGDVAR_H_ */
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