1 | /* $NetBSD: cgdvar.h,v 1.18 2015/09/06 06:00:59 dholland 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/ioccom.h> |
36 | |
37 | /* ioctl(2) code: used by CGDIOCSET and CGDIOCCLR */ |
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 | /* ioctl(2) code: used by CGDIOCGET */ |
51 | struct cgd_user { |
52 | int cgu_unit; /* which cgd unit */ |
53 | dev_t cgu_dev; /* target device */ |
54 | char cgu_alg[32]; /* algorithm name */ |
55 | size_t cgu_blocksize; /* block size (in bytes) */ |
56 | int cgu_mode; /* Cipher Mode and IV Gen method */ |
57 | #define CGD_CIPHER_CBC_ENCBLKNO8 1 /* CBC Mode w/ Enc Block Number |
58 | * 8 passes (compat only) |
59 | */ |
60 | #define CGD_CIPHER_CBC_ENCBLKNO1 2 /* CBC Mode w/ Enc Block Number |
61 | * 1 pass (default) |
62 | */ |
63 | int cgu_keylen; /* keylength */ |
64 | }; |
65 | |
66 | #ifdef _KERNEL |
67 | |
68 | #include <dev/cgd_crypto.h> |
69 | |
70 | /* This cryptdata structure is here rather than cgd_crypto.h, since |
71 | * it stores local state which will not be generalised beyond the |
72 | * cgd driver. |
73 | */ |
74 | |
75 | struct cryptdata { |
76 | size_t cf_blocksize; /* block size (in bytes) */ |
77 | int cf_keylen; /* key length */ |
78 | int cf_mode; /* Cipher Mode and IV Gen method |
79 | * (see cgu_mode above for defines) */ |
80 | void *cf_priv; /* enc alg private data */ |
81 | }; |
82 | |
83 | struct cgd_softc { |
84 | struct dk_softc sc_dksc; /* generic disk interface */ |
85 | struct vnode *sc_tvn; /* target device's vnode */ |
86 | dev_t sc_tdev; /* target device */ |
87 | char *sc_tpath; /* target device's path */ |
88 | void * sc_data; /* emergency buffer */ |
89 | int sc_data_used; /* Really lame, we'll change */ |
90 | size_t sc_tpathlen; /* length of prior string */ |
91 | struct cryptdata sc_cdata; /* crypto data */ |
92 | const struct cryptfuncs *sc_cfuncs; /* encryption functions */ |
93 | kmutex_t sc_lock; /* our lock */ |
94 | }; |
95 | #endif |
96 | |
97 | /* XXX XAX XXX elric: check these out properly. */ |
98 | #define CGDIOCSET _IOWR('F', 18, struct cgd_ioctl) |
99 | #define CGDIOCCLR _IOW('F', 19, struct cgd_ioctl) |
100 | #define CGDIOCGET _IOWR('F', 20, struct cgd_user) |
101 | |
102 | /* Maximum block sized to be used by the ciphers */ |
103 | #define CGD_MAXBLOCKSIZE 128 |
104 | |
105 | #endif /* _DEV_CGDVAR_H_ */ |
106 | |