1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/bio.h> 39 #include <sys/sbuf.h> 40 #include <sys/sysctl.h> 41 #include <sys/malloc.h> 42 #include <geom/geom.h> 43 #include <geom/nop/g_nop.h> 44 45 46 SYSCTL_DECL(_kern_geom); 47 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW, 0, "GEOM_NOP stuff"); 48 static u_int g_nop_debug = 0; 49 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 50 "Debug level"); 51 52 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 53 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 54 struct g_geom *gp); 55 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 56 const char *verb); 57 static void g_nop_dumpconf(struct sbuf *sb, const char *indent, 58 struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 59 60 struct g_class g_nop_class = { 61 .name = G_NOP_CLASS_NAME, 62 .version = G_VERSION, 63 .ctlreq = g_nop_config, 64 .destroy_geom = g_nop_destroy_geom 65 }; 66 67 68 static void 69 g_nop_orphan(struct g_consumer *cp) 70 { 71 72 g_topology_assert(); 73 g_nop_destroy(cp->geom, 1); 74 } 75 76 static void 77 g_nop_resize(struct g_consumer *cp) 78 { 79 struct g_nop_softc *sc; 80 struct g_geom *gp; 81 struct g_provider *pp; 82 off_t size; 83 84 g_topology_assert(); 85 86 gp = cp->geom; 87 sc = gp->softc; 88 89 if (sc->sc_explicitsize != 0) 90 return; 91 if (cp->provider->mediasize < sc->sc_offset) { 92 g_nop_destroy(gp, 1); 93 return; 94 } 95 size = cp->provider->mediasize - sc->sc_offset; 96 LIST_FOREACH(pp, &gp->provider, provider) 97 g_resize_provider(pp, size); 98 } 99 100 static void 101 g_nop_start(struct bio *bp) 102 { 103 struct g_nop_softc *sc; 104 struct g_geom *gp; 105 struct g_provider *pp; 106 struct bio *cbp; 107 u_int failprob = 0; 108 109 gp = bp->bio_to->geom; 110 sc = gp->softc; 111 G_NOP_LOGREQ(bp, "Request received."); 112 mtx_lock(&sc->sc_lock); 113 switch (bp->bio_cmd) { 114 case BIO_READ: 115 sc->sc_reads++; 116 sc->sc_readbytes += bp->bio_length; 117 failprob = sc->sc_rfailprob; 118 break; 119 case BIO_WRITE: 120 sc->sc_writes++; 121 sc->sc_wrotebytes += bp->bio_length; 122 failprob = sc->sc_wfailprob; 123 break; 124 case BIO_DELETE: 125 sc->sc_deletes++; 126 break; 127 case BIO_GETATTR: 128 sc->sc_getattrs++; 129 if (sc->sc_physpath && 130 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) { 131 mtx_unlock(&sc->sc_lock); 132 return; 133 } 134 break; 135 case BIO_FLUSH: 136 sc->sc_flushes++; 137 break; 138 case BIO_CMD0: 139 sc->sc_cmd0s++; 140 break; 141 case BIO_CMD1: 142 sc->sc_cmd1s++; 143 break; 144 case BIO_CMD2: 145 sc->sc_cmd2s++; 146 break; 147 } 148 mtx_unlock(&sc->sc_lock); 149 if (failprob > 0) { 150 u_int rval; 151 152 rval = arc4random() % 100; 153 if (rval < failprob) { 154 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 155 g_io_deliver(bp, sc->sc_error); 156 return; 157 } 158 } 159 cbp = g_clone_bio(bp); 160 if (cbp == NULL) { 161 g_io_deliver(bp, ENOMEM); 162 return; 163 } 164 cbp->bio_done = g_std_done; 165 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 166 pp = LIST_FIRST(&gp->provider); 167 KASSERT(pp != NULL, ("NULL pp")); 168 cbp->bio_to = pp; 169 G_NOP_LOGREQ(cbp, "Sending request."); 170 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 171 } 172 173 static int 174 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 175 { 176 struct g_geom *gp; 177 struct g_consumer *cp; 178 int error; 179 180 gp = pp->geom; 181 cp = LIST_FIRST(&gp->consumer); 182 error = g_access(cp, dr, dw, de); 183 184 return (error); 185 } 186 187 static int 188 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 189 int ioerror, u_int rfailprob, u_int wfailprob, off_t offset, off_t size, 190 u_int secsize, off_t stripesize, off_t stripeoffset, const char *physpath) 191 { 192 struct g_nop_softc *sc; 193 struct g_geom *gp; 194 struct g_provider *newpp; 195 struct g_consumer *cp; 196 char name[64]; 197 int error; 198 off_t explicitsize; 199 200 g_topology_assert(); 201 202 gp = NULL; 203 newpp = NULL; 204 cp = NULL; 205 206 if ((offset % pp->sectorsize) != 0) { 207 gctl_error(req, "Invalid offset for provider %s.", pp->name); 208 return (EINVAL); 209 } 210 if ((size % pp->sectorsize) != 0) { 211 gctl_error(req, "Invalid size for provider %s.", pp->name); 212 return (EINVAL); 213 } 214 if (offset >= pp->mediasize) { 215 gctl_error(req, "Invalid offset for provider %s.", pp->name); 216 return (EINVAL); 217 } 218 explicitsize = size; 219 if (size == 0) 220 size = pp->mediasize - offset; 221 if (offset + size > pp->mediasize) { 222 gctl_error(req, "Invalid size for provider %s.", pp->name); 223 return (EINVAL); 224 } 225 if (secsize == 0) 226 secsize = pp->sectorsize; 227 else if ((secsize % pp->sectorsize) != 0) { 228 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 229 return (EINVAL); 230 } 231 if (secsize > MAXPHYS) { 232 gctl_error(req, "secsize is too big."); 233 return (EINVAL); 234 } 235 size -= size % secsize; 236 if ((stripesize % pp->sectorsize) != 0) { 237 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 238 return (EINVAL); 239 } 240 if ((stripeoffset % pp->sectorsize) != 0) { 241 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 242 return (EINVAL); 243 } 244 if (stripesize != 0 && stripeoffset >= stripesize) { 245 gctl_error(req, "stripeoffset is too big."); 246 return (EINVAL); 247 } 248 snprintf(name, sizeof(name), "%s%s", pp->name, G_NOP_SUFFIX); 249 LIST_FOREACH(gp, &mp->geom, geom) { 250 if (strcmp(gp->name, name) == 0) { 251 gctl_error(req, "Provider %s already exists.", name); 252 return (EEXIST); 253 } 254 } 255 gp = g_new_geomf(mp, "%s", name); 256 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 257 sc->sc_offset = offset; 258 sc->sc_explicitsize = explicitsize; 259 sc->sc_stripesize = stripesize; 260 sc->sc_stripeoffset = stripeoffset; 261 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 262 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 263 } else 264 sc->sc_physpath = NULL; 265 sc->sc_error = ioerror; 266 sc->sc_rfailprob = rfailprob; 267 sc->sc_wfailprob = wfailprob; 268 sc->sc_reads = 0; 269 sc->sc_writes = 0; 270 sc->sc_deletes = 0; 271 sc->sc_getattrs = 0; 272 sc->sc_flushes = 0; 273 sc->sc_cmd0s = 0; 274 sc->sc_cmd1s = 0; 275 sc->sc_cmd2s = 0; 276 sc->sc_readbytes = 0; 277 sc->sc_wrotebytes = 0; 278 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 279 gp->softc = sc; 280 gp->start = g_nop_start; 281 gp->orphan = g_nop_orphan; 282 gp->resize = g_nop_resize; 283 gp->access = g_nop_access; 284 gp->dumpconf = g_nop_dumpconf; 285 286 newpp = g_new_providerf(gp, "%s", gp->name); 287 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 288 newpp->mediasize = size; 289 newpp->sectorsize = secsize; 290 newpp->stripesize = stripesize; 291 newpp->stripeoffset = stripeoffset; 292 293 cp = g_new_consumer(gp); 294 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 295 error = g_attach(cp, pp); 296 if (error != 0) { 297 gctl_error(req, "Cannot attach to provider %s.", pp->name); 298 goto fail; 299 } 300 301 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 302 g_error_provider(newpp, 0); 303 G_NOP_DEBUG(0, "Device %s created.", gp->name); 304 return (0); 305 fail: 306 if (cp->provider != NULL) 307 g_detach(cp); 308 g_destroy_consumer(cp); 309 g_destroy_provider(newpp); 310 mtx_destroy(&sc->sc_lock); 311 free(sc->sc_physpath, M_GEOM); 312 g_free(gp->softc); 313 g_destroy_geom(gp); 314 return (error); 315 } 316 317 static int 318 g_nop_destroy(struct g_geom *gp, boolean_t force) 319 { 320 struct g_nop_softc *sc; 321 struct g_provider *pp; 322 323 g_topology_assert(); 324 sc = gp->softc; 325 if (sc == NULL) 326 return (ENXIO); 327 free(sc->sc_physpath, M_GEOM); 328 pp = LIST_FIRST(&gp->provider); 329 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 330 if (force) { 331 G_NOP_DEBUG(0, "Device %s is still open, so it " 332 "can't be definitely removed.", pp->name); 333 } else { 334 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 335 pp->name, pp->acr, pp->acw, pp->ace); 336 return (EBUSY); 337 } 338 } else { 339 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 340 } 341 gp->softc = NULL; 342 mtx_destroy(&sc->sc_lock); 343 g_free(sc); 344 g_wither_geom(gp, ENXIO); 345 346 return (0); 347 } 348 349 static int 350 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 351 { 352 353 return (g_nop_destroy(gp, 0)); 354 } 355 356 static void 357 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 358 { 359 struct g_provider *pp; 360 intmax_t *error, *rfailprob, *wfailprob, *offset, *secsize, *size, 361 *stripesize, *stripeoffset; 362 const char *name, *physpath; 363 char param[16]; 364 int i, *nargs; 365 366 g_topology_assert(); 367 368 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 369 if (nargs == NULL) { 370 gctl_error(req, "No '%s' argument", "nargs"); 371 return; 372 } 373 if (*nargs <= 0) { 374 gctl_error(req, "Missing device(s)."); 375 return; 376 } 377 error = gctl_get_paraml(req, "error", sizeof(*error)); 378 if (error == NULL) { 379 gctl_error(req, "No '%s' argument", "error"); 380 return; 381 } 382 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 383 if (rfailprob == NULL) { 384 gctl_error(req, "No '%s' argument", "rfailprob"); 385 return; 386 } 387 if (*rfailprob < -1 || *rfailprob > 100) { 388 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 389 return; 390 } 391 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 392 if (wfailprob == NULL) { 393 gctl_error(req, "No '%s' argument", "wfailprob"); 394 return; 395 } 396 if (*wfailprob < -1 || *wfailprob > 100) { 397 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 398 return; 399 } 400 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 401 if (offset == NULL) { 402 gctl_error(req, "No '%s' argument", "offset"); 403 return; 404 } 405 if (*offset < 0) { 406 gctl_error(req, "Invalid '%s' argument", "offset"); 407 return; 408 } 409 size = gctl_get_paraml(req, "size", sizeof(*size)); 410 if (size == NULL) { 411 gctl_error(req, "No '%s' argument", "size"); 412 return; 413 } 414 if (*size < 0) { 415 gctl_error(req, "Invalid '%s' argument", "size"); 416 return; 417 } 418 secsize = gctl_get_paraml(req, "secsize", sizeof(*secsize)); 419 if (secsize == NULL) { 420 gctl_error(req, "No '%s' argument", "secsize"); 421 return; 422 } 423 if (*secsize < 0) { 424 gctl_error(req, "Invalid '%s' argument", "secsize"); 425 return; 426 } 427 stripesize = gctl_get_paraml(req, "stripesize", sizeof(*stripesize)); 428 if (stripesize == NULL) { 429 gctl_error(req, "No '%s' argument", "stripesize"); 430 return; 431 } 432 if (*stripesize < 0) { 433 gctl_error(req, "Invalid '%s' argument", "stripesize"); 434 return; 435 } 436 stripeoffset = gctl_get_paraml(req, "stripeoffset", sizeof(*stripeoffset)); 437 if (stripeoffset == NULL) { 438 gctl_error(req, "No '%s' argument", "stripeoffset"); 439 return; 440 } 441 if (*stripeoffset < 0) { 442 gctl_error(req, "Invalid '%s' argument", "stripeoffset"); 443 return; 444 } 445 physpath = gctl_get_asciiparam(req, "physpath"); 446 447 for (i = 0; i < *nargs; i++) { 448 snprintf(param, sizeof(param), "arg%d", i); 449 name = gctl_get_asciiparam(req, param); 450 if (name == NULL) { 451 gctl_error(req, "No 'arg%d' argument", i); 452 return; 453 } 454 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 455 name += strlen("/dev/"); 456 pp = g_provider_by_name(name); 457 if (pp == NULL) { 458 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 459 gctl_error(req, "Provider %s is invalid.", name); 460 return; 461 } 462 if (g_nop_create(req, mp, pp, 463 *error == -1 ? EIO : (int)*error, 464 *rfailprob == -1 ? 0 : (u_int)*rfailprob, 465 *wfailprob == -1 ? 0 : (u_int)*wfailprob, 466 (off_t)*offset, (off_t)*size, (u_int)*secsize, 467 (off_t)*stripesize, (off_t)*stripeoffset, 468 physpath) != 0) { 469 return; 470 } 471 } 472 } 473 474 static void 475 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 476 { 477 struct g_nop_softc *sc; 478 struct g_provider *pp; 479 intmax_t *error, *rfailprob, *wfailprob; 480 const char *name; 481 char param[16]; 482 int i, *nargs; 483 484 g_topology_assert(); 485 486 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 487 if (nargs == NULL) { 488 gctl_error(req, "No '%s' argument", "nargs"); 489 return; 490 } 491 if (*nargs <= 0) { 492 gctl_error(req, "Missing device(s)."); 493 return; 494 } 495 error = gctl_get_paraml(req, "error", sizeof(*error)); 496 if (error == NULL) { 497 gctl_error(req, "No '%s' argument", "error"); 498 return; 499 } 500 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 501 if (rfailprob == NULL) { 502 gctl_error(req, "No '%s' argument", "rfailprob"); 503 return; 504 } 505 if (*rfailprob < -1 || *rfailprob > 100) { 506 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 507 return; 508 } 509 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 510 if (wfailprob == NULL) { 511 gctl_error(req, "No '%s' argument", "wfailprob"); 512 return; 513 } 514 if (*wfailprob < -1 || *wfailprob > 100) { 515 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 516 return; 517 } 518 519 for (i = 0; i < *nargs; i++) { 520 snprintf(param, sizeof(param), "arg%d", i); 521 name = gctl_get_asciiparam(req, param); 522 if (name == NULL) { 523 gctl_error(req, "No 'arg%d' argument", i); 524 return; 525 } 526 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 527 name += strlen("/dev/"); 528 pp = g_provider_by_name(name); 529 if (pp == NULL || pp->geom->class != mp) { 530 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 531 gctl_error(req, "Provider %s is invalid.", name); 532 return; 533 } 534 sc = pp->geom->softc; 535 if (*error != -1) 536 sc->sc_error = (int)*error; 537 if (*rfailprob != -1) 538 sc->sc_rfailprob = (u_int)*rfailprob; 539 if (*wfailprob != -1) 540 sc->sc_wfailprob = (u_int)*wfailprob; 541 } 542 } 543 544 static struct g_geom * 545 g_nop_find_geom(struct g_class *mp, const char *name) 546 { 547 struct g_geom *gp; 548 549 LIST_FOREACH(gp, &mp->geom, geom) { 550 if (strcmp(gp->name, name) == 0) 551 return (gp); 552 } 553 return (NULL); 554 } 555 556 static void 557 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 558 { 559 int *nargs, *force, error, i; 560 struct g_geom *gp; 561 const char *name; 562 char param[16]; 563 564 g_topology_assert(); 565 566 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 567 if (nargs == NULL) { 568 gctl_error(req, "No '%s' argument", "nargs"); 569 return; 570 } 571 if (*nargs <= 0) { 572 gctl_error(req, "Missing device(s)."); 573 return; 574 } 575 force = gctl_get_paraml(req, "force", sizeof(*force)); 576 if (force == NULL) { 577 gctl_error(req, "No 'force' argument"); 578 return; 579 } 580 581 for (i = 0; i < *nargs; i++) { 582 snprintf(param, sizeof(param), "arg%d", i); 583 name = gctl_get_asciiparam(req, param); 584 if (name == NULL) { 585 gctl_error(req, "No 'arg%d' argument", i); 586 return; 587 } 588 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 589 name += strlen("/dev/"); 590 gp = g_nop_find_geom(mp, name); 591 if (gp == NULL) { 592 G_NOP_DEBUG(1, "Device %s is invalid.", name); 593 gctl_error(req, "Device %s is invalid.", name); 594 return; 595 } 596 error = g_nop_destroy(gp, *force); 597 if (error != 0) { 598 gctl_error(req, "Cannot destroy device %s (error=%d).", 599 gp->name, error); 600 return; 601 } 602 } 603 } 604 605 static void 606 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 607 { 608 struct g_nop_softc *sc; 609 struct g_provider *pp; 610 const char *name; 611 char param[16]; 612 int i, *nargs; 613 614 g_topology_assert(); 615 616 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 617 if (nargs == NULL) { 618 gctl_error(req, "No '%s' argument", "nargs"); 619 return; 620 } 621 if (*nargs <= 0) { 622 gctl_error(req, "Missing device(s)."); 623 return; 624 } 625 626 for (i = 0; i < *nargs; i++) { 627 snprintf(param, sizeof(param), "arg%d", i); 628 name = gctl_get_asciiparam(req, param); 629 if (name == NULL) { 630 gctl_error(req, "No 'arg%d' argument", i); 631 return; 632 } 633 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 634 name += strlen("/dev/"); 635 pp = g_provider_by_name(name); 636 if (pp == NULL || pp->geom->class != mp) { 637 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 638 gctl_error(req, "Provider %s is invalid.", name); 639 return; 640 } 641 sc = pp->geom->softc; 642 sc->sc_reads = 0; 643 sc->sc_writes = 0; 644 sc->sc_deletes = 0; 645 sc->sc_getattrs = 0; 646 sc->sc_flushes = 0; 647 sc->sc_cmd0s = 0; 648 sc->sc_cmd1s = 0; 649 sc->sc_cmd2s = 0; 650 sc->sc_readbytes = 0; 651 sc->sc_wrotebytes = 0; 652 } 653 } 654 655 static void 656 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 657 { 658 uint32_t *version; 659 660 g_topology_assert(); 661 662 version = gctl_get_paraml(req, "version", sizeof(*version)); 663 if (version == NULL) { 664 gctl_error(req, "No '%s' argument.", "version"); 665 return; 666 } 667 if (*version != G_NOP_VERSION) { 668 gctl_error(req, "Userland and kernel parts are out of sync."); 669 return; 670 } 671 672 if (strcmp(verb, "create") == 0) { 673 g_nop_ctl_create(req, mp); 674 return; 675 } else if (strcmp(verb, "configure") == 0) { 676 g_nop_ctl_configure(req, mp); 677 return; 678 } else if (strcmp(verb, "destroy") == 0) { 679 g_nop_ctl_destroy(req, mp); 680 return; 681 } else if (strcmp(verb, "reset") == 0) { 682 g_nop_ctl_reset(req, mp); 683 return; 684 } 685 686 gctl_error(req, "Unknown verb."); 687 } 688 689 static void 690 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 691 struct g_consumer *cp, struct g_provider *pp) 692 { 693 struct g_nop_softc *sc; 694 695 if (pp != NULL || cp != NULL) 696 return; 697 sc = gp->softc; 698 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 699 (intmax_t)sc->sc_offset); 700 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 701 sc->sc_rfailprob); 702 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 703 sc->sc_wfailprob); 704 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 705 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 706 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 707 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 708 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 709 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 710 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 711 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 712 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 713 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 714 sc->sc_readbytes); 715 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 716 sc->sc_wrotebytes); 717 } 718 719 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 720 MODULE_VERSION(geom_nop, 0); 721