1 /** $MirOS: src/sys/dev/vndioctl.h,v 1.8 2008/07/09 23:20:50 tg Exp $ */ 2 /* $OpenBSD: vndioctl.h,v 1.6 2004/06/20 18:03:03 pedro Exp $ */ 3 /* $NetBSD: vndioctl.h,v 1.5 1995/01/25 04:46:30 cgd Exp $ */ 4 5 /* 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1990, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$ 39 * 40 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93 41 */ 42 43 #ifndef _SYS_VNDIOCTL_H_ 44 #define _SYS_VNDIOCTL_H_ 45 46 #define VNDNLEN 90 47 48 /* 49 * Ioctl definitions for file (vnode) disk pseudo-device. 50 */ 51 struct vnd_ioctl { 52 char *vnd_file; /* pathname of file to mount */ 53 off_t vnd_size; /* (returned) size of disk */ 54 u_char *vnd_key; 55 int vnd_keylen; 56 u_int32_t vnd_options; /* mount options (for configure) */ 57 #define VNDIOC_OPT_RDONLY 1 /* don't write to the underlying file */ 58 #define VNDIOC_ALGSHIFT 24 /* shift of algorithm in vnd_options */ 59 #define VNDIOC_ALG_BLF 0x00 /* old Blowfish */ 60 #ifdef notyet 61 /* do not use these yet: 62 * 1) kernel implementation has not yet been tested 63 * 2) user space is not ready yet 64 * 3) the API will change for XTR support: 65 * http://marc.info/?m=121341266715025 66 * we will do it like them, one key per 2³⁰ blocks (sectors), for all algos 67 */ 68 #define VNDIOC_ALG_BF_CBC 0x01 /* new Blowfish-CBC */ 69 #define VNDIOC_ALG_AES128_CBC 0x02 /* AES with 128-bit keys */ 70 #define VNDIOC_ALG_AES192_CBC 0x03 /* AES with 192-bit keys */ 71 #define VNDIOC_ALG_AES256_CBC 0x04 /* AES with 256-bit keys */ 72 #endif 73 }; 74 75 /* 76 * Key sizes for the encrypton algorithms 77 */ 78 #define VNDIOC_KSZ_BLF 72 /* 576 bit (448 bit used) */ 79 #ifdef notyet 80 #define VNDIOC_KSZ_BF_CBC 88 /* 16 bytes salt, 72 bytes key */ 81 #define VNDIOC_KSZ_AES128_CBC 32 /* 16 bytes salt, 16 bytes key */ 82 #define VNDIOC_KSZ_AES192_CBC 40 /* 16 bytes salt, 24 bytes key */ 83 #define VNDIOC_KSZ_AES256_CBC 48 /* 16 bytes salt, 32 bytes key */ 84 #define VNDIOC_MAXKSZ 88 /* largest of the above */ 85 #else 86 #define VNDIOC_MAXKSZ 72 87 #endif 88 89 #define VNDIOC_BSZ_BLF 8 /* blowfish has 64 bit blocks */ 90 #ifdef notyet 91 #define VNDIOC_BSZ_AES 16 /* rijndael has 128 bit blocks */ 92 #define VNDIOC_MAXBSZ 16 /* largest of the above */ 93 94 #define VNDIOC_IVSZ 16 /* size of the salt/IV */ 95 #else 96 #define VNDIOC_MAXBSZ 8 97 #endif 98 99 /* 100 * A simple structure used by userland to query about a specific vnd. 101 */ 102 struct vnd_user { 103 char vnu_file[VNDNLEN]; /* vnd file */ 104 int vnu_unit; /* vnd unit */ 105 dev_t vnu_dev; /* vnd device */ 106 ino_t vnu_ino; /* vnd inode */ 107 }; 108 109 /* 110 * Before you can use a unit, it must be configured with VNDIOCSET. 111 * The configuration persists across opens and closes of the device; 112 * an VNDIOCCLR must be used to reset a configuration. An attempt to 113 * VNDIOCSET an already active unit will return EBUSY. 114 */ 115 #define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */ 116 #define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */ 117 #define VNDIOCGET _IOWR('F', 2, struct vnd_user) /* get disk info */ 118 119 #endif /* !_SYS_VNDIOCTL_H_ */ 120