dksubr.c revision 1.3.2.3
1 1.3.2.3 thorpej /* $NetBSD: dksubr.c,v 1.3.2.3 2002/12/19 00:48:02 thorpej Exp $ */ 2 1.3.2.2 nathanw 3 1.3.2.2 nathanw /*- 4 1.3.2.2 nathanw * Copyright (c) 1996, 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc. 5 1.3.2.2 nathanw * All rights reserved. 6 1.3.2.2 nathanw * 7 1.3.2.2 nathanw * This code is derived from software contributed to The NetBSD Foundation 8 1.3.2.2 nathanw * by Jason R. Thorpe and Roland C. Dowdeswell. 9 1.3.2.2 nathanw * 10 1.3.2.2 nathanw * Redistribution and use in source and binary forms, with or without 11 1.3.2.2 nathanw * modification, are permitted provided that the following conditions 12 1.3.2.2 nathanw * are met: 13 1.3.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 14 1.3.2.2 nathanw * notice, this list of conditions and the following disclaimer. 15 1.3.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 17 1.3.2.2 nathanw * documentation and/or other materials provided with the distribution. 18 1.3.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 19 1.3.2.2 nathanw * must display the following acknowledgement: 20 1.3.2.2 nathanw * This product includes software developed by the NetBSD 21 1.3.2.2 nathanw * Foundation, Inc. and its contributors. 22 1.3.2.2 nathanw * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.3.2.2 nathanw * contributors may be used to endorse or promote products derived 24 1.3.2.2 nathanw * from this software without specific prior written permission. 25 1.3.2.2 nathanw * 26 1.3.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.3.2.2 nathanw * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.3.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.3.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.3.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.3.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.3.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.3.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.3.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.3.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.3.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 37 1.3.2.2 nathanw */ 38 1.3.2.2 nathanw 39 1.3.2.2 nathanw #include <sys/param.h> 40 1.3.2.2 nathanw #include <sys/systm.h> 41 1.3.2.2 nathanw #include <sys/stat.h> 42 1.3.2.2 nathanw #include <sys/proc.h> 43 1.3.2.2 nathanw #include <sys/ioctl.h> 44 1.3.2.2 nathanw #include <sys/device.h> 45 1.3.2.2 nathanw #include <sys/disk.h> 46 1.3.2.2 nathanw #include <sys/disklabel.h> 47 1.3.2.2 nathanw #include <sys/vnode.h> 48 1.3.2.2 nathanw #include <sys/fcntl.h> 49 1.3.2.2 nathanw #include <sys/namei.h> 50 1.3.2.2 nathanw 51 1.3.2.2 nathanw #include <dev/dkvar.h> 52 1.3.2.2 nathanw 53 1.3.2.2 nathanw int dkdebug = 0; 54 1.3.2.2 nathanw 55 1.3.2.2 nathanw #ifdef DEBUG 56 1.3.2.2 nathanw #define DKDB_FOLLOW 0x1 57 1.3.2.2 nathanw #define DKDB_INIT 0x2 58 1.3.2.2 nathanw #define DKDB_VNODE 0x4 59 1.3.2.2 nathanw 60 1.3.2.2 nathanw #define IFDEBUG(x,y) if (dkdebug & (x)) y 61 1.3.2.2 nathanw #define DPRINTF(x,y) IFDEBUG(x, printf y) 62 1.3.2.2 nathanw #define DPRINTF_FOLLOW(y) DPRINTF(DKDB_FOLLOW, y) 63 1.3.2.2 nathanw #else 64 1.3.2.2 nathanw #define IFDEBUG(x,y) 65 1.3.2.2 nathanw #define DPRINTF(x,y) 66 1.3.2.2 nathanw #define DPRINTF_FOLLOW(y) 67 1.3.2.2 nathanw #endif 68 1.3.2.2 nathanw 69 1.3.2.2 nathanw #define DKLABELDEV(dev) \ 70 1.3.2.2 nathanw (MAKEDISKDEV(major((dev)), DISKUNIT((dev)), RAW_PART)) 71 1.3.2.2 nathanw 72 1.3.2.2 nathanw void dk_makedisklabel(struct dk_intf *, struct dk_softc *); 73 1.3.2.2 nathanw 74 1.3.2.2 nathanw void 75 1.3.2.2 nathanw dk_sc_init(struct dk_softc *dksc, void *osc, char *xname) 76 1.3.2.2 nathanw { 77 1.3.2.2 nathanw 78 1.3.2.2 nathanw memset(dksc, 0x0, sizeof(*dksc)); 79 1.3.2.2 nathanw dksc->sc_osc = osc; 80 1.3.2.2 nathanw strncpy(dksc->sc_xname, xname, DK_XNAME_SIZE); 81 1.3.2.2 nathanw dksc->sc_dkdev.dk_name = dksc->sc_xname; 82 1.3.2.2 nathanw lockinit(&dksc->sc_lock, PRIBIO, "dklk", 0, 0); 83 1.3.2.2 nathanw } 84 1.3.2.2 nathanw 85 1.3.2.2 nathanw /* ARGSUSED */ 86 1.3.2.2 nathanw int 87 1.3.2.2 nathanw dk_open(struct dk_intf *di, struct dk_softc *dksc, dev_t dev, 88 1.3.2.2 nathanw int flags, int fmt, struct proc *p) 89 1.3.2.2 nathanw { 90 1.3.2.2 nathanw struct disklabel *lp = dksc->sc_dkdev.dk_label; 91 1.3.2.2 nathanw int part = DISKPART(dev); 92 1.3.2.2 nathanw int pmask = 1 << part; 93 1.3.2.2 nathanw int ret = 0; 94 1.3.2.2 nathanw 95 1.3.2.2 nathanw DPRINTF_FOLLOW(("dk_open(%s, %p, 0x%x, 0x%x)\n", 96 1.3.2.2 nathanw di->di_dkname, dksc, dev, flags)); 97 1.3.2.2 nathanw 98 1.3.2.2 nathanw if ((ret = lockmgr(&dksc->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 99 1.3.2.2 nathanw return ret; 100 1.3.2.2 nathanw 101 1.3.2.2 nathanw part = DISKPART(dev); 102 1.3.2.2 nathanw pmask = 1 << part; 103 1.3.2.2 nathanw 104 1.3.2.2 nathanw /* 105 1.3.2.2 nathanw * If we're init'ed and there are no other open partitions then 106 1.3.2.2 nathanw * update the in-core disklabel. 107 1.3.2.2 nathanw */ 108 1.3.2.2 nathanw if ((dksc->sc_flags & DKF_INITED) && dksc->sc_dkdev.dk_openmask == 0) 109 1.3.2.2 nathanw dk_getdisklabel(di, dksc, dev); 110 1.3.2.2 nathanw 111 1.3.2.2 nathanw /* Fail if we can't find the partition. */ 112 1.3.2.2 nathanw if ((part != RAW_PART) && 113 1.3.2.2 nathanw (((dksc->sc_flags & DKF_INITED) == 0) || 114 1.3.2.2 nathanw ((part >= lp->d_npartitions) || 115 1.3.2.2 nathanw (lp->d_partitions[part].p_fstype == FS_UNUSED)))) { 116 1.3.2.2 nathanw ret = ENXIO; 117 1.3.2.2 nathanw goto done; 118 1.3.2.2 nathanw } 119 1.3.2.2 nathanw 120 1.3.2.2 nathanw /* Mark our unit as open. */ 121 1.3.2.2 nathanw switch (fmt) { 122 1.3.2.2 nathanw case S_IFCHR: 123 1.3.2.2 nathanw dksc->sc_dkdev.dk_copenmask |= pmask; 124 1.3.2.2 nathanw break; 125 1.3.2.2 nathanw case S_IFBLK: 126 1.3.2.2 nathanw dksc->sc_dkdev.dk_bopenmask |= pmask; 127 1.3.2.2 nathanw break; 128 1.3.2.2 nathanw } 129 1.3.2.2 nathanw 130 1.3.2.2 nathanw dksc->sc_dkdev.dk_openmask = 131 1.3.2.2 nathanw dksc->sc_dkdev.dk_copenmask | dksc->sc_dkdev.dk_bopenmask; 132 1.3.2.2 nathanw 133 1.3.2.2 nathanw done: 134 1.3.2.2 nathanw lockmgr(&dksc->sc_lock, LK_RELEASE, NULL); 135 1.3.2.2 nathanw return ret; 136 1.3.2.2 nathanw } 137 1.3.2.2 nathanw 138 1.3.2.2 nathanw /* ARGSUSED */ 139 1.3.2.2 nathanw int 140 1.3.2.2 nathanw dk_close(struct dk_intf *di, struct dk_softc *dksc, dev_t dev, 141 1.3.2.2 nathanw int flags, int fmt, struct proc *p) 142 1.3.2.2 nathanw { 143 1.3.2.2 nathanw int part = DISKPART(dev); 144 1.3.2.2 nathanw int pmask = 1 << part; 145 1.3.2.2 nathanw int ret; 146 1.3.2.2 nathanw 147 1.3.2.2 nathanw DPRINTF_FOLLOW(("dk_close(%s, %p, 0x%x, 0x%x)\n", 148 1.3.2.2 nathanw di->di_dkname, dksc, dev, flags)); 149 1.3.2.2 nathanw 150 1.3.2.2 nathanw if ((ret = lockmgr(&dksc->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 151 1.3.2.2 nathanw return ret; 152 1.3.2.2 nathanw 153 1.3.2.2 nathanw switch (fmt) { 154 1.3.2.2 nathanw case S_IFCHR: 155 1.3.2.2 nathanw dksc->sc_dkdev.dk_copenmask &= ~pmask; 156 1.3.2.2 nathanw break; 157 1.3.2.2 nathanw case S_IFBLK: 158 1.3.2.2 nathanw dksc->sc_dkdev.dk_bopenmask &= ~pmask; 159 1.3.2.2 nathanw break; 160 1.3.2.2 nathanw } 161 1.3.2.2 nathanw dksc->sc_dkdev.dk_openmask = 162 1.3.2.2 nathanw dksc->sc_dkdev.dk_copenmask | dksc->sc_dkdev.dk_bopenmask; 163 1.3.2.2 nathanw 164 1.3.2.2 nathanw lockmgr(&dksc->sc_lock, LK_RELEASE, NULL); 165 1.3.2.2 nathanw return 0; 166 1.3.2.2 nathanw } 167 1.3.2.2 nathanw 168 1.3.2.2 nathanw void 169 1.3.2.2 nathanw dk_strategy(struct dk_intf *di, struct dk_softc *dksc, struct buf *bp) 170 1.3.2.2 nathanw { 171 1.3.2.2 nathanw struct disklabel *lp = dksc->sc_dkdev.dk_label; 172 1.3.2.2 nathanw int s; 173 1.3.2.2 nathanw int wlabel; 174 1.3.2.2 nathanw 175 1.3.2.2 nathanw DPRINTF_FOLLOW(("dk_strategy(%s, %p, %p)\n", 176 1.3.2.2 nathanw di->di_dkname, dksc, bp)); 177 1.3.2.2 nathanw 178 1.3.2.2 nathanw if (!(dksc->sc_flags & DKF_INITED)) { 179 1.3.2.2 nathanw DPRINTF_FOLLOW(("dk_stragy: not inited\n")); 180 1.3.2.2 nathanw bp->b_error = ENXIO; 181 1.3.2.2 nathanw bp->b_flags |= B_ERROR; 182 1.3.2.2 nathanw biodone(bp); 183 1.3.2.2 nathanw return; 184 1.3.2.2 nathanw } 185 1.3.2.2 nathanw 186 1.3.2.2 nathanw /* XXX look for some more errors, c.f. ld.c */ 187 1.3.2.2 nathanw 188 1.3.2.2 nathanw bp->b_resid = bp->b_bcount; 189 1.3.2.2 nathanw 190 1.3.2.2 nathanw /* If there is nothing to do, then we are done */ 191 1.3.2.2 nathanw if (bp->b_bcount == 0) { 192 1.3.2.2 nathanw biodone(bp); 193 1.3.2.2 nathanw return; 194 1.3.2.2 nathanw } 195 1.3.2.2 nathanw 196 1.3.2.2 nathanw wlabel = dksc->sc_flags & (DKF_WLABEL|DKF_LABELLING); 197 1.3.2.2 nathanw if (DISKPART(bp->b_dev) != RAW_PART && 198 1.3.2.2 nathanw bounds_check_with_label(bp, lp, wlabel) <= 0) { 199 1.3.2.2 nathanw biodone(bp); 200 1.3.2.2 nathanw return; 201 1.3.2.2 nathanw } 202 1.3.2.2 nathanw 203 1.3.2.2 nathanw /* 204 1.3.2.2 nathanw * Start the unit by calling the start routine 205 1.3.2.2 nathanw * provided by the individual driver. 206 1.3.2.2 nathanw */ 207 1.3.2.2 nathanw s = splbio(); 208 1.3.2.2 nathanw di->di_diskstart(dksc, bp); 209 1.3.2.2 nathanw splx(s); 210 1.3.2.2 nathanw return; 211 1.3.2.2 nathanw } 212 1.3.2.2 nathanw 213 1.3.2.2 nathanw int 214 1.3.2.2 nathanw dk_size(struct dk_intf *di, struct dk_softc *dksc, dev_t dev) 215 1.3.2.2 nathanw { 216 1.3.2.2 nathanw struct disklabel *lp; 217 1.3.2.2 nathanw int is_open; 218 1.3.2.2 nathanw int part; 219 1.3.2.2 nathanw int size; 220 1.3.2.2 nathanw 221 1.3.2.2 nathanw if ((dksc->sc_flags & DKF_INITED) == 0) 222 1.3.2.2 nathanw return -1; 223 1.3.2.2 nathanw 224 1.3.2.2 nathanw part = DISKPART(dev); 225 1.3.2.2 nathanw is_open = dksc->sc_dkdev.dk_openmask & (1 << part); 226 1.3.2.2 nathanw 227 1.3.2.2 nathanw if (!is_open && di->di_open(dev, 0, S_IFBLK, curproc)) 228 1.3.2.2 nathanw return -1; 229 1.3.2.2 nathanw 230 1.3.2.2 nathanw lp = dksc->sc_dkdev.dk_label; 231 1.3.2.2 nathanw if (lp->d_partitions[part].p_fstype != FS_SWAP) 232 1.3.2.2 nathanw size = -1; 233 1.3.2.2 nathanw else 234 1.3.2.2 nathanw size = lp->d_partitions[part].p_size * 235 1.3.2.2 nathanw (lp->d_secsize / DEV_BSIZE); 236 1.3.2.2 nathanw 237 1.3.2.2 nathanw if (!is_open && di->di_close(dev, 0, S_IFBLK, curproc)) 238 1.3.2.2 nathanw return 1; 239 1.3.2.2 nathanw 240 1.3.2.2 nathanw return size; 241 1.3.2.2 nathanw } 242 1.3.2.2 nathanw 243 1.3.2.2 nathanw int 244 1.3.2.2 nathanw dk_ioctl(struct dk_intf *di, struct dk_softc *dksc, dev_t dev, 245 1.3.2.2 nathanw u_long cmd, caddr_t data, int flag, struct proc *p) 246 1.3.2.2 nathanw { 247 1.3.2.2 nathanw struct disklabel *lp; 248 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 249 1.3.2.2 nathanw struct disklabel newlabel; 250 1.3.2.2 nathanw #endif 251 1.3.2.2 nathanw int error = 0; 252 1.3.2.2 nathanw 253 1.3.2.2 nathanw DPRINTF_FOLLOW(("dk_ioctl(%s, %p, 0x%x, 0x%lx)\n", 254 1.3.2.2 nathanw di->di_dkname, dksc, dev, cmd)); 255 1.3.2.2 nathanw 256 1.3.2.2 nathanw /* ensure that the pseudo disk is open for writes for these commands */ 257 1.3.2.2 nathanw switch (cmd) { 258 1.3.2.2 nathanw case DIOCSDINFO: 259 1.3.2.2 nathanw case DIOCWDINFO: 260 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 261 1.3.2.2 nathanw case ODIOCSDINFO: 262 1.3.2.2 nathanw case ODIOCWDINFO: 263 1.3.2.2 nathanw #endif 264 1.3.2.2 nathanw case DIOCWLABEL: 265 1.3.2.2 nathanw if ((flag & FWRITE) == 0) 266 1.3.2.2 nathanw return EBADF; 267 1.3.2.2 nathanw } 268 1.3.2.2 nathanw 269 1.3.2.2 nathanw /* ensure that the pseudo-disk is initialized for these */ 270 1.3.2.2 nathanw switch (cmd) { 271 1.3.2.2 nathanw case DIOCGDINFO: 272 1.3.2.2 nathanw case DIOCSDINFO: 273 1.3.2.2 nathanw case DIOCWDINFO: 274 1.3.2.2 nathanw case DIOCGPART: 275 1.3.2.2 nathanw case DIOCWLABEL: 276 1.3.2.2 nathanw case DIOCGDEFLABEL: 277 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 278 1.3.2.2 nathanw case ODIOCGDINFO: 279 1.3.2.2 nathanw case ODIOCSDINFO: 280 1.3.2.2 nathanw case ODIOCWDINFO: 281 1.3.2.2 nathanw case ODIOCGDEFLABEL: 282 1.3.2.2 nathanw #endif 283 1.3.2.2 nathanw if ((dksc->sc_flags & DKF_INITED) == 0) 284 1.3.2.2 nathanw return ENXIO; 285 1.3.2.2 nathanw } 286 1.3.2.2 nathanw 287 1.3.2.2 nathanw switch (cmd) { 288 1.3.2.2 nathanw case DIOCGDINFO: 289 1.3.2.2 nathanw *(struct disklabel *)data = *(dksc->sc_dkdev.dk_label); 290 1.3.2.2 nathanw break; 291 1.3.2.2 nathanw 292 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 293 1.3.2.2 nathanw case ODIOCGDINFO: 294 1.3.2.2 nathanw newlabel = *(dksc->sc_dkdev.dk_label); 295 1.3.2.2 nathanw if (newlabel.d_npartitions > OLDMAXPARTITIONS) 296 1.3.2.2 nathanw return ENOTTY; 297 1.3.2.2 nathanw memcpy(data, &newlabel, sizeof (struct olddisklabel)); 298 1.3.2.2 nathanw break; 299 1.3.2.2 nathanw #endif 300 1.3.2.2 nathanw 301 1.3.2.2 nathanw case DIOCGPART: 302 1.3.2.2 nathanw ((struct partinfo *)data)->disklab = dksc->sc_dkdev.dk_label; 303 1.3.2.2 nathanw ((struct partinfo *)data)->part = 304 1.3.2.2 nathanw &dksc->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 305 1.3.2.2 nathanw break; 306 1.3.2.2 nathanw 307 1.3.2.2 nathanw case DIOCWDINFO: 308 1.3.2.2 nathanw case DIOCSDINFO: 309 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 310 1.3.2.2 nathanw case ODIOCWDINFO: 311 1.3.2.2 nathanw case ODIOCSDINFO: 312 1.3.2.2 nathanw #endif 313 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 314 1.3.2.2 nathanw if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 315 1.3.2.2 nathanw memset(&newlabel, 0, sizeof newlabel); 316 1.3.2.2 nathanw memcpy(&newlabel, data, sizeof (struct olddisklabel)); 317 1.3.2.2 nathanw lp = &newlabel; 318 1.3.2.2 nathanw } else 319 1.3.2.2 nathanw #endif 320 1.3.2.2 nathanw lp = (struct disklabel *)data; 321 1.3.2.2 nathanw 322 1.3.2.2 nathanw dksc->sc_flags |= DKF_LABELLING; 323 1.3.2.2 nathanw 324 1.3.2.2 nathanw error = setdisklabel(dksc->sc_dkdev.dk_label, 325 1.3.2.2 nathanw lp, 0, dksc->sc_dkdev.dk_cpulabel); 326 1.3.2.2 nathanw if (error == 0) { 327 1.3.2.2 nathanw if (cmd == DIOCWDINFO 328 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 329 1.3.2.2 nathanw || cmd == ODIOCWDINFO 330 1.3.2.2 nathanw #endif 331 1.3.2.2 nathanw ) 332 1.3.2.2 nathanw error = writedisklabel(DKLABELDEV(dev), 333 1.3.2.2 nathanw di->di_strategy, dksc->sc_dkdev.dk_label, 334 1.3.2.2 nathanw dksc->sc_dkdev.dk_cpulabel); 335 1.3.2.2 nathanw } 336 1.3.2.2 nathanw 337 1.3.2.2 nathanw dksc->sc_flags &= ~DKF_LABELLING; 338 1.3.2.2 nathanw break; 339 1.3.2.2 nathanw 340 1.3.2.2 nathanw case DIOCWLABEL: 341 1.3.2.2 nathanw if (*(int *)data != 0) 342 1.3.2.2 nathanw dksc->sc_flags |= DKF_WLABEL; 343 1.3.2.2 nathanw else 344 1.3.2.2 nathanw dksc->sc_flags &= ~DKF_WLABEL; 345 1.3.2.2 nathanw break; 346 1.3.2.2 nathanw 347 1.3.2.2 nathanw case DIOCGDEFLABEL: 348 1.3.2.2 nathanw dk_getdefaultlabel(di, dksc, (struct disklabel *)data); 349 1.3.2.2 nathanw break; 350 1.3.2.2 nathanw 351 1.3.2.2 nathanw #ifdef __HAVE_OLD_DISKLABEL 352 1.3.2.2 nathanw case ODIOCGDEFLABEL: 353 1.3.2.2 nathanw dk_getdefaultlabel(di, dksc, &newlabel); 354 1.3.2.2 nathanw if (newlabel.d_npartitions > OLDMAXPARTITIONS) 355 1.3.2.2 nathanw return ENOTTY; 356 1.3.2.2 nathanw memcpy(data, &newlabel, sizeof (struct olddisklabel)); 357 1.3.2.2 nathanw break; 358 1.3.2.2 nathanw #endif 359 1.3.2.2 nathanw 360 1.3.2.2 nathanw default: 361 1.3.2.2 nathanw error = ENOTTY; 362 1.3.2.2 nathanw } 363 1.3.2.2 nathanw 364 1.3.2.2 nathanw return error; 365 1.3.2.2 nathanw } 366 1.3.2.2 nathanw 367 1.3.2.2 nathanw /* 368 1.3.2.2 nathanw * dk_dump dumps all of physical memory into the partition specified. 369 1.3.2.2 nathanw * This requires substantially more framework than {s,w}ddump, and hence 370 1.3.2.2 nathanw * is probably much more fragile. 371 1.3.2.2 nathanw * 372 1.3.2.2 nathanw * XXX: we currently do not implement this. 373 1.3.2.2 nathanw */ 374 1.3.2.2 nathanw 375 1.3.2.2 nathanw #define DKF_READYFORDUMP (DKF_INITED|DKF_TAKEDUMP) 376 1.3.2.2 nathanw #define DKFF_READYFORDUMP(x) (((x) & DKF_READYFORDUMP) == DKF_READYFORDUMP) 377 1.3.2.2 nathanw static volatile int dk_dumping = 0; 378 1.3.2.2 nathanw 379 1.3.2.2 nathanw /* ARGSUSED */ 380 1.3.2.2 nathanw int 381 1.3.2.2 nathanw dk_dump(struct dk_intf *di, struct dk_softc *dksc, dev_t dev, 382 1.3.2.2 nathanw daddr_t blkno, caddr_t va, size_t size) 383 1.3.2.2 nathanw { 384 1.3.2.2 nathanw 385 1.3.2.2 nathanw /* 386 1.3.2.2 nathanw * ensure that we consider this device to be safe for dumping, 387 1.3.2.2 nathanw * and that the device is configured. 388 1.3.2.2 nathanw */ 389 1.3.2.2 nathanw if (!DKFF_READYFORDUMP(dksc->sc_flags)) 390 1.3.2.2 nathanw return ENXIO; 391 1.3.2.2 nathanw 392 1.3.2.2 nathanw /* ensure that we are not already dumping */ 393 1.3.2.2 nathanw if (dk_dumping) 394 1.3.2.2 nathanw return EFAULT; 395 1.3.2.2 nathanw dk_dumping = 1; 396 1.3.2.2 nathanw 397 1.3.2.2 nathanw /* XXX: unimplemented */ 398 1.3.2.2 nathanw 399 1.3.2.2 nathanw dk_dumping = 0; 400 1.3.2.2 nathanw 401 1.3.2.2 nathanw /* XXX: actually for now, we are going to leave this alone */ 402 1.3.2.2 nathanw return ENXIO; 403 1.3.2.2 nathanw } 404 1.3.2.2 nathanw 405 1.3.2.2 nathanw /* ARGSUSED */ 406 1.3.2.2 nathanw void 407 1.3.2.2 nathanw dk_getdefaultlabel(struct dk_intf *di, struct dk_softc *dksc, 408 1.3.2.2 nathanw struct disklabel *lp) 409 1.3.2.2 nathanw { 410 1.3.2.2 nathanw struct dk_geom *pdg = &dksc->sc_geom; 411 1.3.2.2 nathanw 412 1.3.2.3 thorpej memset(lp, 0, sizeof(*lp)); 413 1.3.2.3 thorpej 414 1.3.2.2 nathanw lp->d_secperunit = dksc->sc_size; 415 1.3.2.2 nathanw lp->d_secsize = pdg->pdg_secsize; 416 1.3.2.2 nathanw lp->d_nsectors = pdg->pdg_nsectors; 417 1.3.2.2 nathanw lp->d_ntracks = pdg->pdg_ntracks; 418 1.3.2.2 nathanw lp->d_ncylinders = pdg->pdg_ncylinders; 419 1.3.2.2 nathanw lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 420 1.3.2.2 nathanw 421 1.3.2.2 nathanw strncpy(lp->d_typename, di->di_dkname, sizeof(lp->d_typename)); 422 1.3.2.2 nathanw lp->d_type = di->di_dtype; 423 1.3.2.2 nathanw strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 424 1.3.2.2 nathanw lp->d_rpm = 3600; 425 1.3.2.2 nathanw lp->d_interleave = 1; 426 1.3.2.2 nathanw lp->d_flags = 0; 427 1.3.2.2 nathanw 428 1.3.2.2 nathanw lp->d_partitions[RAW_PART].p_offset = 0; 429 1.3.2.2 nathanw lp->d_partitions[RAW_PART].p_size = dksc->sc_size; 430 1.3.2.2 nathanw lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 431 1.3.2.2 nathanw lp->d_npartitions = RAW_PART + 1; 432 1.3.2.2 nathanw 433 1.3.2.2 nathanw lp->d_magic = DISKMAGIC; 434 1.3.2.2 nathanw lp->d_magic2 = DISKMAGIC; 435 1.3.2.2 nathanw lp->d_checksum = dkcksum(dksc->sc_dkdev.dk_label); 436 1.3.2.2 nathanw } 437 1.3.2.2 nathanw 438 1.3.2.2 nathanw /* ARGSUSED */ 439 1.3.2.2 nathanw void 440 1.3.2.2 nathanw dk_getdisklabel(struct dk_intf *di, struct dk_softc *dksc, dev_t dev) 441 1.3.2.2 nathanw { 442 1.3.2.2 nathanw struct disklabel *lp = dksc->sc_dkdev.dk_label; 443 1.3.2.2 nathanw struct cpu_disklabel *clp = dksc->sc_dkdev.dk_cpulabel; 444 1.3.2.2 nathanw struct partition *pp; 445 1.3.2.2 nathanw int i; 446 1.3.2.2 nathanw char *errstring; 447 1.3.2.2 nathanw 448 1.3.2.2 nathanw memset(clp, 0x0, sizeof(*clp)); 449 1.3.2.2 nathanw dk_getdefaultlabel(di, dksc, lp); 450 1.3.2.2 nathanw errstring = readdisklabel(DKLABELDEV(dev), di->di_strategy, 451 1.3.2.2 nathanw dksc->sc_dkdev.dk_label, dksc->sc_dkdev.dk_cpulabel); 452 1.3.2.2 nathanw if (errstring) { 453 1.3.2.2 nathanw dk_makedisklabel(di, dksc); 454 1.3.2.2 nathanw if (dksc->sc_flags & DKF_WARNLABEL) 455 1.3.2.2 nathanw printf("%s: %s\n", dksc->sc_xname, errstring); 456 1.3.2.2 nathanw return; 457 1.3.2.2 nathanw } 458 1.3.2.2 nathanw 459 1.3.2.2 nathanw if ((dksc->sc_flags & DKF_LABELSANITY) == 0) 460 1.3.2.2 nathanw return; 461 1.3.2.2 nathanw 462 1.3.2.2 nathanw /* Sanity check */ 463 1.3.2.2 nathanw if (lp->d_secperunit != dksc->sc_size) 464 1.3.2.2 nathanw printf("WARNING: %s: total sector size in disklabel (%d) " 465 1.3.2.2 nathanw "!= the size of %s (%lu)\n", dksc->sc_xname, 466 1.3.2.2 nathanw lp->d_secperunit, di->di_dkname, (u_long)dksc->sc_size); 467 1.3.2.2 nathanw 468 1.3.2.2 nathanw for (i=0; i < lp->d_npartitions; i++) { 469 1.3.2.2 nathanw pp = &lp->d_partitions[i]; 470 1.3.2.2 nathanw if (pp->p_offset + pp->p_size > dksc->sc_size) 471 1.3.2.2 nathanw printf("WARNING: %s: end of partition `%c' exceeds " 472 1.3.2.2 nathanw "the size of %s (%lu)\n", dksc->sc_xname, 473 1.3.2.2 nathanw 'a' + i, di->di_dkname, (u_long)dksc->sc_size); 474 1.3.2.2 nathanw } 475 1.3.2.2 nathanw } 476 1.3.2.2 nathanw 477 1.3.2.2 nathanw /* ARGSUSED */ 478 1.3.2.2 nathanw void 479 1.3.2.2 nathanw dk_makedisklabel(struct dk_intf *di, struct dk_softc *dksc) 480 1.3.2.2 nathanw { 481 1.3.2.2 nathanw struct disklabel *lp = dksc->sc_dkdev.dk_label; 482 1.3.2.2 nathanw 483 1.3.2.2 nathanw lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 484 1.3.2.2 nathanw strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 485 1.3.2.2 nathanw lp->d_checksum = dkcksum(lp); 486 1.3.2.2 nathanw } 487 1.3.2.2 nathanw 488 1.3.2.2 nathanw /* This function is taken from ccd.c:1.76 --rcd */ 489 1.3.2.2 nathanw 490 1.3.2.2 nathanw /* 491 1.3.2.2 nathanw * XXX this function looks too generic for dksubr.c, shouldn't we 492 1.3.2.2 nathanw * put it somewhere better? 493 1.3.2.2 nathanw */ 494 1.3.2.2 nathanw 495 1.3.2.2 nathanw /* 496 1.3.2.2 nathanw * Lookup the provided name in the filesystem. If the file exists, 497 1.3.2.2 nathanw * is a valid block device, and isn't being used by anyone else, 498 1.3.2.2 nathanw * set *vpp to the file's vnode. 499 1.3.2.2 nathanw */ 500 1.3.2.2 nathanw int 501 1.3.2.2 nathanw dk_lookup(path, p, vpp) 502 1.3.2.2 nathanw char *path; 503 1.3.2.2 nathanw struct proc *p; 504 1.3.2.2 nathanw struct vnode **vpp; /* result */ 505 1.3.2.2 nathanw { 506 1.3.2.2 nathanw struct nameidata nd; 507 1.3.2.2 nathanw struct vnode *vp; 508 1.3.2.2 nathanw struct vattr va; 509 1.3.2.2 nathanw int error; 510 1.3.2.2 nathanw 511 1.3.2.2 nathanw NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, path, p); 512 1.3.2.2 nathanw if ((error = vn_open(&nd, FREAD|FWRITE, 0)) != 0) { 513 1.3.2.2 nathanw DPRINTF((DKDB_FOLLOW|DKDB_INIT), 514 1.3.2.2 nathanw ("dk_lookup: vn_open error = %d\n", error)); 515 1.3.2.2 nathanw return (error); 516 1.3.2.2 nathanw } 517 1.3.2.2 nathanw vp = nd.ni_vp; 518 1.3.2.2 nathanw 519 1.3.2.2 nathanw if (vp->v_usecount > 1) { 520 1.3.2.2 nathanw VOP_UNLOCK(vp, 0); 521 1.3.2.2 nathanw (void)vn_close(vp, FREAD|FWRITE, p->p_ucred, p); 522 1.3.2.2 nathanw return (EBUSY); 523 1.3.2.2 nathanw } 524 1.3.2.2 nathanw 525 1.3.2.2 nathanw if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0) { 526 1.3.2.2 nathanw DPRINTF((DKDB_FOLLOW|DKDB_INIT), 527 1.3.2.2 nathanw ("dk_lookup: getattr error = %d\n", error)); 528 1.3.2.2 nathanw VOP_UNLOCK(vp, 0); 529 1.3.2.2 nathanw (void)vn_close(vp, FREAD|FWRITE, p->p_ucred, p); 530 1.3.2.2 nathanw return (error); 531 1.3.2.2 nathanw } 532 1.3.2.2 nathanw 533 1.3.2.2 nathanw /* XXX: eventually we should handle VREG, too. */ 534 1.3.2.2 nathanw if (va.va_type != VBLK) { 535 1.3.2.2 nathanw VOP_UNLOCK(vp, 0); 536 1.3.2.2 nathanw (void)vn_close(vp, FREAD|FWRITE, p->p_ucred, p); 537 1.3.2.2 nathanw return (ENOTBLK); 538 1.3.2.2 nathanw } 539 1.3.2.2 nathanw 540 1.3.2.2 nathanw IFDEBUG(DKDB_VNODE, vprint("dk_lookup: vnode info", vp)); 541 1.3.2.2 nathanw 542 1.3.2.2 nathanw VOP_UNLOCK(vp, 0); 543 1.3.2.2 nathanw *vpp = vp; 544 1.3.2.2 nathanw return (0); 545 1.3.2.2 nathanw } 546
Indexes created Wed Oct 22 13:09:56 GMT 2025