vndvar.h revision 1.26
1 /* $NetBSD: vndvar.h,v 1.26 2009/12/14 03:11:22 uebayasi 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 #ifndef _SYS_DEV_VNDVAR_H_ 110 #define _SYS_DEV_VNDVAR_H_ 111 112 #include <sys/pool.h> 113 114 /* 115 * Vnode disk pseudo-geometry information. 116 */ 117 struct vndgeom { 118 u_int32_t vng_secsize; /* # bytes per sector */ 119 u_int32_t vng_nsectors; /* # data sectors per track */ 120 u_int32_t vng_ntracks; /* # tracks per cylinder */ 121 u_int32_t vng_ncylinders; /* # cylinders per unit */ 122 }; 123 124 /* 125 * Ioctl definitions for file (vnode) disk pseudo-device. 126 */ 127 struct vnd_ioctl { 128 char *vnd_file; /* pathname of file to mount */ 129 int vnd_flags; /* flags; see below */ 130 struct vndgeom vnd_geom; /* geometry to emulate */ 131 unsigned int vnd_osize; /* (returned) size of disk */ 132 uint64_t vnd_size; /* (returned) size of disk */ 133 }; 134 135 /* vnd_flags */ 136 #define VNDIOF_HASGEOM 0x01 /* use specified geometry */ 137 #define VNDIOF_READONLY 0x02 /* as read-only device */ 138 #define VNDIOF_FORCE 0x04 /* force close */ 139 140 #ifdef _KERNEL 141 142 struct vnode; 143 144 /* 145 * A vnode disk's state information. 146 */ 147 struct vnd_softc { 148 device_t sc_dev; 149 int sc_flags; /* flags */ 150 size_t sc_size; /* size of vnd */ 151 struct vnode *sc_vp; /* vnode */ 152 kauth_cred_t sc_cred; /* credentials */ 153 int sc_maxactive; /* max # of active requests */ 154 struct bufq_state *sc_tab; /* transfer queue */ 155 int sc_active; /* number of active transfers */ 156 struct disk sc_dkdev; /* generic disk device info */ 157 struct vndgeom sc_geom; /* virtual geometry */ 158 struct pool sc_vxpool; /* vndxfer pool */ 159 struct pool sc_vbpool; /* vndbuf pool */ 160 struct lwp *sc_kthread; /* kernel thread */ 161 u_int32_t sc_comp_blksz; /* precompressed block size */ 162 u_int32_t sc_comp_numoffs;/* count of compressed block offsets */ 163 u_int64_t *sc_comp_offsets;/* file idx's to compressed blocks */ 164 unsigned char *sc_comp_buff; /* compressed data buffer */ 165 unsigned char *sc_comp_decombuf;/* decompressed data buffer */ 166 int32_t sc_comp_buffblk;/*current decompressed block */ 167 z_stream sc_comp_stream;/* decompress descriptor */ 168 }; 169 #endif 170 171 /* sc_flags */ 172 #define VNF_INITED 0x001 /* unit has been initialized */ 173 #define VNF_WLABEL 0x002 /* label area is writable */ 174 #define VNF_LABELLING 0x004 /* unit is currently being labelled */ 175 #define VNF_WANTED 0x008 /* someone is waiting to obtain a lock */ 176 #define VNF_LOCKED 0x010 /* unit is locked */ 177 #define VNF_READONLY 0x020 /* unit is read-only */ 178 #define VNF_KLABEL 0x040 /* keep label on close */ 179 #define VNF_VLABEL 0x080 /* label is valid */ 180 #define VNF_KTHREAD 0x100 /* thread is running */ 181 #define VNF_VUNCONF 0x200 /* device is unconfiguring */ 182 #define VNF_COMP 0x400 /* file is compressed */ 183 #define VNF_CLEARING 0x800 /* unit is being torn down */ 184 185 /* structure of header in a compressed file */ 186 struct vnd_comp_header 187 { 188 char preamble[128]; 189 u_int32_t block_size; 190 u_int32_t num_blocks; 191 }; 192 193 /* 194 * A simple structure for describing which vnd units are in use. 195 */ 196 #ifdef COMPAT_30 197 struct vnd_ouser { 198 int vnu_unit; /* which vnd unit */ 199 dev_t vnu_dev; /* file is on this device... */ 200 uint32_t vnu_ino; /* ...at this inode */ 201 }; 202 #define VNDIOOCGET _IOWR('F', 2, struct vnd_ouser) /* get list */ 203 #endif 204 205 struct vnd_user { 206 int vnu_unit; /* which vnd unit */ 207 dev_t vnu_dev; /* file is on this device... */ 208 ino_t vnu_ino; /* ...at this inode */ 209 }; 210 211 /* 212 * Before you can use a unit, it must be configured with VNDIOCSET. 213 * The configuration persists across opens and closes of the device; 214 * an VNDIOCCLR must be used to reset a configuration. An attempt to 215 * VNDIOCSET an already active unit will return EBUSY. 216 */ 217 #define VNDIOCSET _IOWR('F', 0, struct vnd_ioctl) /* enable disk */ 218 #define VNDIOCCLR _IOW('F', 1, struct vnd_ioctl) /* disable disk */ 219 #define VNDIOCGET _IOWR('F', 3, struct vnd_user) /* get list */ 220 221 /* These only have the 32bit vnd_osize field */ 222 #define VNDIOOCSET _IOC(IOC_INOUT, 'F', 0, \ 223 offsetof(struct vnd_ioctl, vnd_size)) 224 #define VNDIOOCCLR _IOC(IOC_IN, 'F', 1, \ 225 offsetof(struct vnd_ioctl, vnd_size)) 226 227 #endif /* _SYS_DEV_VNDVAR_H_ */ 228
Indexes created Sat Sep 27 14:09:57 GMT 2025