1 /* $NetBSD: vndvar.h,v 1.23 2008/04/28 20:23:47 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 /* 33 * Copyright (c) 1990, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * the Systems Programming Group of the University of Utah Computer 38 * Science Department. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$ 65 * 66 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93 67 */ 68 69 /* 70 * Copyright (c) 1988 University of Utah. 71 * 72 * This code is derived from software contributed to Berkeley by 73 * the Systems Programming Group of the University of Utah Computer 74 * Science Department. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. All advertising materials mentioning features or use of this software 85 * must display the following acknowledgement: 86 * This product includes software developed by the University of 87 * California, Berkeley and its contributors. 88 * 4. Neither the name of the University nor the names of its contributors 89 * may be used to endorse or promote products derived from this software 90 * without specific prior written permission. 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 93 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 95 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 96 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 97 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 98 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 100 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 101 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 102 * SUCH DAMAGE. 103 * 104 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$ 105 * 106 * @(#)vnioctl.h 8.1 (Berkeley) 6/10/93 107 */ 108 109 #include <sys/pool.h> 110 111 /* 112 * Vnode disk pseudo-geometry information. 113 */ 114 struct vndgeom { 115 u_int32_t vng_secsize; /* # bytes per sector */ 116 u_int32_t vng_nsectors; /* # data sectors per track */ 117 u_int32_t vng_ntracks; /* # tracks per cylinder */ 118 u_int32_t vng_ncylinders; /* # cylinders per unit */ 119 }; 120 121 /* 122 * Ioctl definitions for file (vnode) disk pseudo-device. 123 */ 124 struct vnd_ioctl { 125 char *vnd_file; /* pathname of file to mount */ 126 int vnd_flags; /* flags; see below */ 127 struct vndgeom vnd_geom; /* geometry to emulate */ 128 int vnd_size; /* (returned) size of disk */ 129 }; 130 131 /* vnd_flags */ 132 #define VNDIOF_HASGEOM 0x01 /* use specified geometry */ 133 #define VNDIOF_READONLY 0x02 /* as read-only device */ 134 #define VNDIOF_FORCE 0x04 /* force close */ 135 136 #ifdef _KERNEL 137 138 struct vnode; 139 140 /* 141 * A vnode disk's state information. 142 */ 143 struct vnd_softc { 144 device_t sc_dev; 145 int sc_flags; /* flags */ 146 size_t sc_size; /* size of vnd */ 147 struct vnode *sc_vp; /* vnode */ 148 kauth_cred_t sc_cred; /* credentials */ 149 int sc_maxactive; /* max # of active requests */ 150 struct bufq_state *sc_tab; /* transfer queue */ 151 int sc_active; /* number of active transfers */ 152 struct disk sc_dkdev; /* generic disk device info */ 153 struct vndgeom sc_geom; /* virtual geometry */ 154 struct pool sc_vxpool; /* vndxfer pool */ 155 struct pool sc_vbpool; /* vndbuf pool */ 156 struct lwp *sc_kthread; /* kernel thread */ 157 u_int32_t sc_comp_blksz; /* precompressed block size */ 158 u_int32_t sc_comp_numoffs;/* count of compressed block offsets */ 159 u_int64_t *sc_comp_offsets;/* file idx's to compressed blocks */ 160 unsigned char *sc_comp_buff; /* compressed data buffer */ 161 unsigned char *sc_comp_decombuf;/* decompressed data buffer */ 162 int32_t sc_comp_buffblk;/*current decompressed block */ 163 z_stream sc_comp_stream;/* decompress descriptor */ 164 }; 165 #endif 166 167 /* sc_flags */ 168 #define VNF_INITED 0x001 /* unit has been initialized */ 169 #define VNF_WLABEL 0x002 /* label area is writable */ 170 #define VNF_LABELLING 0x004 /* unit is currently being labelled */ 171 #define VNF_WANTED 0x008 /* someone is waiting to obtain a lock */ 172 #define VNF_LOCKED 0x010 /* unit is locked */ 173 #define VNF_READONLY 0x020 /* unit is read-only */ 174 #define VNF_KLABEL 0x040 /* keep label on close */ 175 #define VNF_VLABEL 0x080 /* label is valid */ 176 #define VNF_KTHREAD 0x100 /* thread is running */ 177 #define VNF_VUNCONF 0x200 /* device is unconfiguring */ 178 #define VNF_COMP 0x400 /* file is compressed */ 179 180 /* structure of header in a compressed file */ 181 struct vnd_comp_header 182 { 183 char preamble[128]; 184 u_int32_t block_size; 185 u_int32_t num_blocks; 186 }; 187 188 /* 189 * A simple structure for describing which vnd units are in use. 190 */ 191 #ifdef COMPAT_30 192 struct vnd_ouser { 193 int vnu_unit; /* which vnd unit */ 194 dev_t vnu_dev; /* file is on this device... */ 195 uint32_t vnu_ino; /* ...at this inode */ 196 }; 197 #define VNDIOOCGET _IOWR('F', 2, struct vnd_ouser) /* get list */ 198 #endif 199 200 struct vnd_user { 201 int vnu_unit; /* which vnd unit */ 202 dev_t vnu_dev; /* file is on this device... */ 203 ino_t vnu_ino; /* ...at this inode */ 204 }; 205 206 /* 207 * Before you can use a unit, it must be configured with VNDIOCSET. 208 * The configuration persists across opens and closes of the device; 209 * an VNDIOCCLR must be used to reset a configuration. An attempt to 210 * VNDIOCSET an already active unit will return EBUSY. 211 */ 212 #define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */ 213 #define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */ 214 #define VNDIOCGET _IOWR('F', 3, struct vnd_user) /* get list */ 215