FreeBSD/Linux Kernel Cross Reference
sys/dev/cgdvar.h
1 /* $NetBSD: cgdvar.h,v 1.12 2008/09/12 16:51:55 christos 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _DEV_CGDVAR_H_
33 #define _DEV_CGDVAR_H_
34
35 #include <sys/simplelock.h>
36
37 /* ioctl(2) code */
38 struct cgd_ioctl {
39 const char *ci_disk;
40 int ci_flags;
41 int ci_unit;
42 size_t ci_size;
43 const char *ci_alg;
44 const char *ci_ivmethod;
45 size_t ci_keylen;
46 const char *ci_key;
47 size_t ci_blocksize;
48 };
49
50 #ifdef _KERNEL
51
52 #include <dev/cgd_crypto.h>
53
54 /* This cryptdata structure is here rather than cgd_crypto.h, since
55 * it stores local state which will not be generalised beyond the
56 * cgd driver.
57 */
58
59 struct cryptdata {
60 size_t cf_blocksize; /* block size (in bytes) */
61 int cf_mode; /* Cipher Mode and IV Gen method */
62 #define CGD_CIPHER_CBC_ENCBLKNO8 1 /* CBC Mode w/ Enc Block Number
63 * 8 passes (compat only)
64 */
65 #define CGD_CIPHER_CBC_ENCBLKNO1 2 /* CBC Mode w/ Enc Block Number
66 * 1 pass (default)
67 */
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 void * 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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