Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/geom/nop/g_nop.c
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1 /*- 2 * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: releng/11.0/sys/geom/nop/g_nop.c 289110 2015-10-10 09:03:31Z trasz $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/lock.h> 35 #include <sys/mutex.h> 36 #include <sys/bio.h> 37 #include <sys/sbuf.h> 38 #include <sys/sysctl.h> 39 #include <sys/malloc.h> 40 #include <geom/geom.h> 41 #include <geom/nop/g_nop.h> 42 43 44 SYSCTL_DECL(_kern_geom); 45 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW, 0, "GEOM_NOP stuff"); 46 static u_int g_nop_debug = 0; 47 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 48 "Debug level"); 49 50 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 51 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 52 struct g_geom *gp); 53 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 54 const char *verb); 55 static void g_nop_dumpconf(struct sbuf *sb, const char *indent, 56 struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 57 58 struct g_class g_nop_class = { 59 .name = G_NOP_CLASS_NAME, 60 .version = G_VERSION, 61 .ctlreq = g_nop_config, 62 .destroy_geom = g_nop_destroy_geom 63 }; 64 65 66 static void 67 g_nop_orphan(struct g_consumer *cp) 68 { 69 70 g_topology_assert(); 71 g_nop_destroy(cp->geom, 1); 72 } 73 74 static void 75 g_nop_resize(struct g_consumer *cp) 76 { 77 struct g_nop_softc *sc; 78 struct g_geom *gp; 79 struct g_provider *pp; 80 off_t size; 81 82 g_topology_assert(); 83 84 gp = cp->geom; 85 sc = gp->softc; 86 87 if (sc->sc_explicitsize != 0) 88 return; 89 if (cp->provider->mediasize < sc->sc_offset) { 90 g_nop_destroy(gp, 1); 91 return; 92 } 93 size = cp->provider->mediasize - sc->sc_offset; 94 LIST_FOREACH(pp, &gp->provider, provider) 95 g_resize_provider(pp, size); 96 } 97 98 static void 99 g_nop_start(struct bio *bp) 100 { 101 struct g_nop_softc *sc; 102 struct g_geom *gp; 103 struct g_provider *pp; 104 struct bio *cbp; 105 u_int failprob = 0; 106 107 gp = bp->bio_to->geom; 108 sc = gp->softc; 109 G_NOP_LOGREQ(bp, "Request received."); 110 mtx_lock(&sc->sc_lock); 111 switch (bp->bio_cmd) { 112 case BIO_READ: 113 sc->sc_reads++; 114 sc->sc_readbytes += bp->bio_length; 115 failprob = sc->sc_rfailprob; 116 break; 117 case BIO_WRITE: 118 sc->sc_writes++; 119 sc->sc_wrotebytes += bp->bio_length; 120 failprob = sc->sc_wfailprob; 121 break; 122 case BIO_DELETE: 123 sc->sc_deletes++; 124 break; 125 case BIO_GETATTR: 126 sc->sc_getattrs++; 127 break; 128 case BIO_FLUSH: 129 sc->sc_flushes++; 130 break; 131 case BIO_CMD0: 132 sc->sc_cmd0s++; 133 break; 134 case BIO_CMD1: 135 sc->sc_cmd1s++; 136 break; 137 case BIO_CMD2: 138 sc->sc_cmd2s++; 139 break; 140 } 141 mtx_unlock(&sc->sc_lock); 142 if (failprob > 0) { 143 u_int rval; 144 145 rval = arc4random() % 100; 146 if (rval < failprob) { 147 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 148 g_io_deliver(bp, sc->sc_error); 149 return; 150 } 151 } 152 cbp = g_clone_bio(bp); 153 if (cbp == NULL) { 154 g_io_deliver(bp, ENOMEM); 155 return; 156 } 157 cbp->bio_done = g_std_done; 158 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 159 pp = LIST_FIRST(&gp->provider); 160 KASSERT(pp != NULL, ("NULL pp")); 161 cbp->bio_to = pp; 162 G_NOP_LOGREQ(cbp, "Sending request."); 163 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 164 } 165 166 static int 167 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 168 { 169 struct g_geom *gp; 170 struct g_consumer *cp; 171 int error; 172 173 gp = pp->geom; 174 cp = LIST_FIRST(&gp->consumer); 175 error = g_access(cp, dr, dw, de); 176 177 return (error); 178 } 179 180 static int 181 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 182 int ioerror, u_int rfailprob, u_int wfailprob, off_t offset, off_t size, 183 u_int secsize, u_int stripesize, u_int stripeoffset) 184 { 185 struct g_nop_softc *sc; 186 struct g_geom *gp; 187 struct g_provider *newpp; 188 struct g_consumer *cp; 189 char name[64]; 190 int error; 191 off_t explicitsize; 192 193 g_topology_assert(); 194 195 gp = NULL; 196 newpp = NULL; 197 cp = NULL; 198 199 if ((offset % pp->sectorsize) != 0) { 200 gctl_error(req, "Invalid offset for provider %s.", pp->name); 201 return (EINVAL); 202 } 203 if ((size % pp->sectorsize) != 0) { 204 gctl_error(req, "Invalid size for provider %s.", pp->name); 205 return (EINVAL); 206 } 207 if (offset >= pp->mediasize) { 208 gctl_error(req, "Invalid offset for provider %s.", pp->name); 209 return (EINVAL); 210 } 211 explicitsize = size; 212 if (size == 0) 213 size = pp->mediasize - offset; 214 if (offset + size > pp->mediasize) { 215 gctl_error(req, "Invalid size for provider %s.", pp->name); 216 return (EINVAL); 217 } 218 if (secsize == 0) 219 secsize = pp->sectorsize; 220 else if ((secsize % pp->sectorsize) != 0) { 221 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 222 return (EINVAL); 223 } 224 if (secsize > MAXPHYS) { 225 gctl_error(req, "secsize is too big."); 226 return (EINVAL); 227 } 228 size -= size % secsize; 229 if ((stripesize % pp->sectorsize) != 0) { 230 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 231 return (EINVAL); 232 } 233 if ((stripeoffset % pp->sectorsize) != 0) { 234 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 235 return (EINVAL); 236 } 237 if (stripesize != 0 && stripeoffset >= stripesize) { 238 gctl_error(req, "stripeoffset is too big."); 239 return (EINVAL); 240 } 241 snprintf(name, sizeof(name), "%s%s", pp->name, G_NOP_SUFFIX); 242 LIST_FOREACH(gp, &mp->geom, geom) { 243 if (strcmp(gp->name, name) == 0) { 244 gctl_error(req, "Provider %s already exists.", name); 245 return (EEXIST); 246 } 247 } 248 gp = g_new_geomf(mp, "%s", name); 249 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 250 sc->sc_offset = offset; 251 sc->sc_explicitsize = explicitsize; 252 sc->sc_stripesize = stripesize; 253 sc->sc_stripeoffset = stripeoffset; 254 sc->sc_error = ioerror; 255 sc->sc_rfailprob = rfailprob; 256 sc->sc_wfailprob = wfailprob; 257 sc->sc_reads = 0; 258 sc->sc_writes = 0; 259 sc->sc_deletes = 0; 260 sc->sc_getattrs = 0; 261 sc->sc_flushes = 0; 262 sc->sc_cmd0s = 0; 263 sc->sc_cmd1s = 0; 264 sc->sc_cmd2s = 0; 265 sc->sc_readbytes = 0; 266 sc->sc_wrotebytes = 0; 267 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 268 gp->softc = sc; 269 gp->start = g_nop_start; 270 gp->orphan = g_nop_orphan; 271 gp->resize = g_nop_resize; 272 gp->access = g_nop_access; 273 gp->dumpconf = g_nop_dumpconf; 274 275 newpp = g_new_providerf(gp, "%s", gp->name); 276 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 277 newpp->mediasize = size; 278 newpp->sectorsize = secsize; 279 newpp->stripesize = stripesize; 280 newpp->stripeoffset = stripeoffset; 281 282 cp = g_new_consumer(gp); 283 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 284 error = g_attach(cp, pp); 285 if (error != 0) { 286 gctl_error(req, "Cannot attach to provider %s.", pp->name); 287 goto fail; 288 } 289 290 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 291 g_error_provider(newpp, 0); 292 G_NOP_DEBUG(0, "Device %s created.", gp->name); 293 return (0); 294 fail: 295 if (cp->provider != NULL) 296 g_detach(cp); 297 g_destroy_consumer(cp); 298 g_destroy_provider(newpp); 299 mtx_destroy(&sc->sc_lock); 300 g_free(gp->softc); 301 g_destroy_geom(gp); 302 return (error); 303 } 304 305 static int 306 g_nop_destroy(struct g_geom *gp, boolean_t force) 307 { 308 struct g_nop_softc *sc; 309 struct g_provider *pp; 310 311 g_topology_assert(); 312 sc = gp->softc; 313 if (sc == NULL) 314 return (ENXIO); 315 pp = LIST_FIRST(&gp->provider); 316 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 317 if (force) { 318 G_NOP_DEBUG(0, "Device %s is still open, so it " 319 "can't be definitely removed.", pp->name); 320 } else { 321 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 322 pp->name, pp->acr, pp->acw, pp->ace); 323 return (EBUSY); 324 } 325 } else { 326 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 327 } 328 gp->softc = NULL; 329 mtx_destroy(&sc->sc_lock); 330 g_free(sc); 331 g_wither_geom(gp, ENXIO); 332 333 return (0); 334 } 335 336 static int 337 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 338 { 339 340 return (g_nop_destroy(gp, 0)); 341 } 342 343 static void 344 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 345 { 346 struct g_provider *pp; 347 intmax_t *error, *rfailprob, *wfailprob, *offset, *secsize, *size, 348 *stripesize, *stripeoffset; 349 const char *name; 350 char param[16]; 351 int i, *nargs; 352 353 g_topology_assert(); 354 355 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 356 if (nargs == NULL) { 357 gctl_error(req, "No '%s' argument", "nargs"); 358 return; 359 } 360 if (*nargs <= 0) { 361 gctl_error(req, "Missing device(s)."); 362 return; 363 } 364 error = gctl_get_paraml(req, "error", sizeof(*error)); 365 if (error == NULL) { 366 gctl_error(req, "No '%s' argument", "error"); 367 return; 368 } 369 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 370 if (rfailprob == NULL) { 371 gctl_error(req, "No '%s' argument", "rfailprob"); 372 return; 373 } 374 if (*rfailprob < -1 || *rfailprob > 100) { 375 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 376 return; 377 } 378 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 379 if (wfailprob == NULL) { 380 gctl_error(req, "No '%s' argument", "wfailprob"); 381 return; 382 } 383 if (*wfailprob < -1 || *wfailprob > 100) { 384 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 385 return; 386 } 387 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 388 if (offset == NULL) { 389 gctl_error(req, "No '%s' argument", "offset"); 390 return; 391 } 392 if (*offset < 0) { 393 gctl_error(req, "Invalid '%s' argument", "offset"); 394 return; 395 } 396 size = gctl_get_paraml(req, "size", sizeof(*size)); 397 if (size == NULL) { 398 gctl_error(req, "No '%s' argument", "size"); 399 return; 400 } 401 if (*size < 0) { 402 gctl_error(req, "Invalid '%s' argument", "size"); 403 return; 404 } 405 secsize = gctl_get_paraml(req, "secsize", sizeof(*secsize)); 406 if (secsize == NULL) { 407 gctl_error(req, "No '%s' argument", "secsize"); 408 return; 409 } 410 if (*secsize < 0) { 411 gctl_error(req, "Invalid '%s' argument", "secsize"); 412 return; 413 } 414 stripesize = gctl_get_paraml(req, "stripesize", sizeof(*stripesize)); 415 if (stripesize == NULL) { 416 gctl_error(req, "No '%s' argument", "stripesize"); 417 return; 418 } 419 if (*stripesize < 0) { 420 gctl_error(req, "Invalid '%s' argument", "stripesize"); 421 return; 422 } 423 stripeoffset = gctl_get_paraml(req, "stripeoffset", sizeof(*stripeoffset)); 424 if (stripeoffset == NULL) { 425 gctl_error(req, "No '%s' argument", "stripeoffset"); 426 return; 427 } 428 if (*stripeoffset < 0) { 429 gctl_error(req, "Invalid '%s' argument", "stripeoffset"); 430 return; 431 } 432 433 for (i = 0; i < *nargs; i++) { 434 snprintf(param, sizeof(param), "arg%d", i); 435 name = gctl_get_asciiparam(req, param); 436 if (name == NULL) { 437 gctl_error(req, "No 'arg%d' argument", i); 438 return; 439 } 440 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 441 name += strlen("/dev/"); 442 pp = g_provider_by_name(name); 443 if (pp == NULL) { 444 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 445 gctl_error(req, "Provider %s is invalid.", name); 446 return; 447 } 448 if (g_nop_create(req, mp, pp, 449 *error == -1 ? EIO : (int)*error, 450 *rfailprob == -1 ? 0 : (u_int)*rfailprob, 451 *wfailprob == -1 ? 0 : (u_int)*wfailprob, 452 (off_t)*offset, (off_t)*size, (u_int)*secsize, 453 (u_int)*stripesize, (u_int)*stripeoffset) != 0) { 454 return; 455 } 456 } 457 } 458 459 static void 460 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 461 { 462 struct g_nop_softc *sc; 463 struct g_provider *pp; 464 intmax_t *error, *rfailprob, *wfailprob; 465 const char *name; 466 char param[16]; 467 int i, *nargs; 468 469 g_topology_assert(); 470 471 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 472 if (nargs == NULL) { 473 gctl_error(req, "No '%s' argument", "nargs"); 474 return; 475 } 476 if (*nargs <= 0) { 477 gctl_error(req, "Missing device(s)."); 478 return; 479 } 480 error = gctl_get_paraml(req, "error", sizeof(*error)); 481 if (error == NULL) { 482 gctl_error(req, "No '%s' argument", "error"); 483 return; 484 } 485 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 486 if (rfailprob == NULL) { 487 gctl_error(req, "No '%s' argument", "rfailprob"); 488 return; 489 } 490 if (*rfailprob < -1 || *rfailprob > 100) { 491 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 492 return; 493 } 494 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 495 if (wfailprob == NULL) { 496 gctl_error(req, "No '%s' argument", "wfailprob"); 497 return; 498 } 499 if (*wfailprob < -1 || *wfailprob > 100) { 500 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 501 return; 502 } 503 504 for (i = 0; i < *nargs; i++) { 505 snprintf(param, sizeof(param), "arg%d", i); 506 name = gctl_get_asciiparam(req, param); 507 if (name == NULL) { 508 gctl_error(req, "No 'arg%d' argument", i); 509 return; 510 } 511 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 512 name += strlen("/dev/"); 513 pp = g_provider_by_name(name); 514 if (pp == NULL || pp->geom->class != mp) { 515 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 516 gctl_error(req, "Provider %s is invalid.", name); 517 return; 518 } 519 sc = pp->geom->softc; 520 if (*error != -1) 521 sc->sc_error = (int)*error; 522 if (*rfailprob != -1) 523 sc->sc_rfailprob = (u_int)*rfailprob; 524 if (*wfailprob != -1) 525 sc->sc_wfailprob = (u_int)*wfailprob; 526 } 527 } 528 529 static struct g_geom * 530 g_nop_find_geom(struct g_class *mp, const char *name) 531 { 532 struct g_geom *gp; 533 534 LIST_FOREACH(gp, &mp->geom, geom) { 535 if (strcmp(gp->name, name) == 0) 536 return (gp); 537 } 538 return (NULL); 539 } 540 541 static void 542 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 543 { 544 int *nargs, *force, error, i; 545 struct g_geom *gp; 546 const char *name; 547 char param[16]; 548 549 g_topology_assert(); 550 551 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 552 if (nargs == NULL) { 553 gctl_error(req, "No '%s' argument", "nargs"); 554 return; 555 } 556 if (*nargs <= 0) { 557 gctl_error(req, "Missing device(s)."); 558 return; 559 } 560 force = gctl_get_paraml(req, "force", sizeof(*force)); 561 if (force == NULL) { 562 gctl_error(req, "No 'force' argument"); 563 return; 564 } 565 566 for (i = 0; i < *nargs; i++) { 567 snprintf(param, sizeof(param), "arg%d", i); 568 name = gctl_get_asciiparam(req, param); 569 if (name == NULL) { 570 gctl_error(req, "No 'arg%d' argument", i); 571 return; 572 } 573 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 574 name += strlen("/dev/"); 575 gp = g_nop_find_geom(mp, name); 576 if (gp == NULL) { 577 G_NOP_DEBUG(1, "Device %s is invalid.", name); 578 gctl_error(req, "Device %s is invalid.", name); 579 return; 580 } 581 error = g_nop_destroy(gp, *force); 582 if (error != 0) { 583 gctl_error(req, "Cannot destroy device %s (error=%d).", 584 gp->name, error); 585 return; 586 } 587 } 588 } 589 590 static void 591 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 592 { 593 struct g_nop_softc *sc; 594 struct g_provider *pp; 595 const char *name; 596 char param[16]; 597 int i, *nargs; 598 599 g_topology_assert(); 600 601 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 602 if (nargs == NULL) { 603 gctl_error(req, "No '%s' argument", "nargs"); 604 return; 605 } 606 if (*nargs <= 0) { 607 gctl_error(req, "Missing device(s)."); 608 return; 609 } 610 611 for (i = 0; i < *nargs; i++) { 612 snprintf(param, sizeof(param), "arg%d", i); 613 name = gctl_get_asciiparam(req, param); 614 if (name == NULL) { 615 gctl_error(req, "No 'arg%d' argument", i); 616 return; 617 } 618 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 619 name += strlen("/dev/"); 620 pp = g_provider_by_name(name); 621 if (pp == NULL || pp->geom->class != mp) { 622 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 623 gctl_error(req, "Provider %s is invalid.", name); 624 return; 625 } 626 sc = pp->geom->softc; 627 sc->sc_reads = 0; 628 sc->sc_writes = 0; 629 sc->sc_deletes = 0; 630 sc->sc_getattrs = 0; 631 sc->sc_flushes = 0; 632 sc->sc_cmd0s = 0; 633 sc->sc_cmd1s = 0; 634 sc->sc_cmd2s = 0; 635 sc->sc_readbytes = 0; 636 sc->sc_wrotebytes = 0; 637 } 638 } 639 640 static void 641 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 642 { 643 uint32_t *version; 644 645 g_topology_assert(); 646 647 version = gctl_get_paraml(req, "version", sizeof(*version)); 648 if (version == NULL) { 649 gctl_error(req, "No '%s' argument.", "version"); 650 return; 651 } 652 if (*version != G_NOP_VERSION) { 653 gctl_error(req, "Userland and kernel parts are out of sync."); 654 return; 655 } 656 657 if (strcmp(verb, "create") == 0) { 658 g_nop_ctl_create(req, mp); 659 return; 660 } else if (strcmp(verb, "configure") == 0) { 661 g_nop_ctl_configure(req, mp); 662 return; 663 } else if (strcmp(verb, "destroy") == 0) { 664 g_nop_ctl_destroy(req, mp); 665 return; 666 } else if (strcmp(verb, "reset") == 0) { 667 g_nop_ctl_reset(req, mp); 668 return; 669 } 670 671 gctl_error(req, "Unknown verb."); 672 } 673 674 static void 675 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 676 struct g_consumer *cp, struct g_provider *pp) 677 { 678 struct g_nop_softc *sc; 679 680 if (pp != NULL || cp != NULL) 681 return; 682 sc = gp->softc; 683 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 684 (intmax_t)sc->sc_offset); 685 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 686 sc->sc_rfailprob); 687 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 688 sc->sc_wfailprob); 689 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 690 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 691 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 692 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 693 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 694 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 695 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 696 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 697 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 698 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 699 sc->sc_readbytes); 700 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 701 sc->sc_wrotebytes); 702 } 703 704 DECLARE_GEOM_CLASS(g_nop_class, g_nop);
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