g_nop.c revision 332640
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: stable/11/sys/geom/nop/g_nop.c 332640 2018-04-17 02:18:04Z kevans $"); 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 44SYSCTL_DECL(_kern_geom); 45static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW, 0, "GEOM_NOP stuff"); 46static u_int g_nop_debug = 0; 47SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 48 "Debug level"); 49 50static int g_nop_destroy(struct g_geom *gp, boolean_t force); 51static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 52 struct g_geom *gp); 53static void g_nop_config(struct gctl_req *req, struct g_class *mp, 54 const char *verb); 55static void g_nop_dumpconf(struct sbuf *sb, const char *indent, 56 struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 57 58struct 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 66static void 67g_nop_orphan(struct g_consumer *cp) 68{ 69 70 g_topology_assert(); 71 g_nop_destroy(cp->geom, 1); 72} 73 74static void 75g_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 98static void 99g_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 if (sc->sc_physpath && 128 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) { 129 mtx_unlock(&sc->sc_lock); 130 return; 131 } 132 break; 133 case BIO_FLUSH: 134 sc->sc_flushes++; 135 break; 136 case BIO_CMD0: 137 sc->sc_cmd0s++; 138 break; 139 case BIO_CMD1: 140 sc->sc_cmd1s++; 141 break; 142 case BIO_CMD2: 143 sc->sc_cmd2s++; 144 break; 145 } 146 mtx_unlock(&sc->sc_lock); 147 if (failprob > 0) { 148 u_int rval; 149 150 rval = arc4random() % 100; 151 if (rval < failprob) { 152 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 153 g_io_deliver(bp, sc->sc_error); 154 return; 155 } 156 } 157 cbp = g_clone_bio(bp); 158 if (cbp == NULL) { 159 g_io_deliver(bp, ENOMEM); 160 return; 161 } 162 cbp->bio_done = g_std_done; 163 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 164 pp = LIST_FIRST(&gp->provider); 165 KASSERT(pp != NULL, ("NULL pp")); 166 cbp->bio_to = pp; 167 G_NOP_LOGREQ(cbp, "Sending request."); 168 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 169} 170 171static int 172g_nop_access(struct g_provider *pp, int dr, int dw, int de) 173{ 174 struct g_geom *gp; 175 struct g_consumer *cp; 176 int error; 177 178 gp = pp->geom; 179 cp = LIST_FIRST(&gp->consumer); 180 error = g_access(cp, dr, dw, de); 181 182 return (error); 183} 184 185static int 186g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 187 int ioerror, u_int rfailprob, u_int wfailprob, off_t offset, off_t size, 188 u_int secsize, u_int stripesize, u_int stripeoffset, const char *physpath) 189{ 190 struct g_nop_softc *sc; 191 struct g_geom *gp; 192 struct g_provider *newpp; 193 struct g_consumer *cp; 194 char name[64]; 195 int error; 196 off_t explicitsize; 197 198 g_topology_assert(); 199 200 gp = NULL; 201 newpp = NULL; 202 cp = NULL; 203 204 if ((offset % pp->sectorsize) != 0) { 205 gctl_error(req, "Invalid offset for provider %s.", pp->name); 206 return (EINVAL); 207 } 208 if ((size % pp->sectorsize) != 0) { 209 gctl_error(req, "Invalid size for provider %s.", pp->name); 210 return (EINVAL); 211 } 212 if (offset >= pp->mediasize) { 213 gctl_error(req, "Invalid offset for provider %s.", pp->name); 214 return (EINVAL); 215 } 216 explicitsize = size; 217 if (size == 0) 218 size = pp->mediasize - offset; 219 if (offset + size > pp->mediasize) { 220 gctl_error(req, "Invalid size for provider %s.", pp->name); 221 return (EINVAL); 222 } 223 if (secsize == 0) 224 secsize = pp->sectorsize; 225 else if ((secsize % pp->sectorsize) != 0) { 226 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 227 return (EINVAL); 228 } 229 if (secsize > MAXPHYS) { 230 gctl_error(req, "secsize is too big."); 231 return (EINVAL); 232 } 233 size -= size % secsize; 234 if ((stripesize % pp->sectorsize) != 0) { 235 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 236 return (EINVAL); 237 } 238 if ((stripeoffset % pp->sectorsize) != 0) { 239 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 240 return (EINVAL); 241 } 242 if (stripesize != 0 && stripeoffset >= stripesize) { 243 gctl_error(req, "stripeoffset is too big."); 244 return (EINVAL); 245 } 246 snprintf(name, sizeof(name), "%s%s", pp->name, G_NOP_SUFFIX); 247 LIST_FOREACH(gp, &mp->geom, geom) { 248 if (strcmp(gp->name, name) == 0) { 249 gctl_error(req, "Provider %s already exists.", name); 250 return (EEXIST); 251 } 252 } 253 gp = g_new_geomf(mp, "%s", name); 254 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 255 sc->sc_offset = offset; 256 sc->sc_explicitsize = explicitsize; 257 sc->sc_stripesize = stripesize; 258 sc->sc_stripeoffset = stripeoffset; 259 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 260 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 261 } else 262 sc->sc_physpath = NULL; 263 sc->sc_error = ioerror; 264 sc->sc_rfailprob = rfailprob; 265 sc->sc_wfailprob = wfailprob; 266 sc->sc_reads = 0; 267 sc->sc_writes = 0; 268 sc->sc_deletes = 0; 269 sc->sc_getattrs = 0; 270 sc->sc_flushes = 0; 271 sc->sc_cmd0s = 0; 272 sc->sc_cmd1s = 0; 273 sc->sc_cmd2s = 0; 274 sc->sc_readbytes = 0; 275 sc->sc_wrotebytes = 0; 276 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 277 gp->softc = sc; 278 gp->start = g_nop_start; 279 gp->orphan = g_nop_orphan; 280 gp->resize = g_nop_resize; 281 gp->access = g_nop_access; 282 gp->dumpconf = g_nop_dumpconf; 283 284 newpp = g_new_providerf(gp, "%s", gp->name); 285 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 286 newpp->mediasize = size; 287 newpp->sectorsize = secsize; 288 newpp->stripesize = stripesize; 289 newpp->stripeoffset = stripeoffset; 290 291 cp = g_new_consumer(gp); 292 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 293 error = g_attach(cp, pp); 294 if (error != 0) { 295 gctl_error(req, "Cannot attach to provider %s.", pp->name); 296 goto fail; 297 } 298 299 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 300 g_error_provider(newpp, 0); 301 G_NOP_DEBUG(0, "Device %s created.", gp->name); 302 return (0); 303fail: 304 if (cp->provider != NULL) 305 g_detach(cp); 306 g_destroy_consumer(cp); 307 g_destroy_provider(newpp); 308 mtx_destroy(&sc->sc_lock); 309 free(sc->sc_physpath, M_GEOM); 310 g_free(gp->softc); 311 g_destroy_geom(gp); 312 return (error); 313} 314 315static int 316g_nop_destroy(struct g_geom *gp, boolean_t force) 317{ 318 struct g_nop_softc *sc; 319 struct g_provider *pp; 320 321 g_topology_assert(); 322 sc = gp->softc; 323 if (sc == NULL) 324 return (ENXIO); 325 free(sc->sc_physpath, M_GEOM); 326 pp = LIST_FIRST(&gp->provider); 327 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 328 if (force) { 329 G_NOP_DEBUG(0, "Device %s is still open, so it " 330 "can't be definitely removed.", pp->name); 331 } else { 332 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 333 pp->name, pp->acr, pp->acw, pp->ace); 334 return (EBUSY); 335 } 336 } else { 337 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 338 } 339 gp->softc = NULL; 340 mtx_destroy(&sc->sc_lock); 341 g_free(sc); 342 g_wither_geom(gp, ENXIO); 343 344 return (0); 345} 346 347static int 348g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 349{ 350 351 return (g_nop_destroy(gp, 0)); 352} 353 354static void 355g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 356{ 357 struct g_provider *pp; 358 intmax_t *error, *rfailprob, *wfailprob, *offset, *secsize, *size, 359 *stripesize, *stripeoffset; 360 const char *name, *physpath; 361 char param[16]; 362 int i, *nargs; 363 364 g_topology_assert(); 365 366 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 367 if (nargs == NULL) { 368 gctl_error(req, "No '%s' argument", "nargs"); 369 return; 370 } 371 if (*nargs <= 0) { 372 gctl_error(req, "Missing device(s)."); 373 return; 374 } 375 error = gctl_get_paraml(req, "error", sizeof(*error)); 376 if (error == NULL) { 377 gctl_error(req, "No '%s' argument", "error"); 378 return; 379 } 380 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 381 if (rfailprob == NULL) { 382 gctl_error(req, "No '%s' argument", "rfailprob"); 383 return; 384 } 385 if (*rfailprob < -1 || *rfailprob > 100) { 386 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 387 return; 388 } 389 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 390 if (wfailprob == NULL) { 391 gctl_error(req, "No '%s' argument", "wfailprob"); 392 return; 393 } 394 if (*wfailprob < -1 || *wfailprob > 100) { 395 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 396 return; 397 } 398 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 399 if (offset == NULL) { 400 gctl_error(req, "No '%s' argument", "offset"); 401 return; 402 } 403 if (*offset < 0) { 404 gctl_error(req, "Invalid '%s' argument", "offset"); 405 return; 406 } 407 size = gctl_get_paraml(req, "size", sizeof(*size)); 408 if (size == NULL) { 409 gctl_error(req, "No '%s' argument", "size"); 410 return; 411 } 412 if (*size < 0) { 413 gctl_error(req, "Invalid '%s' argument", "size"); 414 return; 415 } 416 secsize = gctl_get_paraml(req, "secsize", sizeof(*secsize)); 417 if (secsize == NULL) { 418 gctl_error(req, "No '%s' argument", "secsize"); 419 return; 420 } 421 if (*secsize < 0) { 422 gctl_error(req, "Invalid '%s' argument", "secsize"); 423 return; 424 } 425 stripesize = gctl_get_paraml(req, "stripesize", sizeof(*stripesize)); 426 if (stripesize == NULL) { 427 gctl_error(req, "No '%s' argument", "stripesize"); 428 return; 429 } 430 if (*stripesize < 0) { 431 gctl_error(req, "Invalid '%s' argument", "stripesize"); 432 return; 433 } 434 stripeoffset = gctl_get_paraml(req, "stripeoffset", sizeof(*stripeoffset)); 435 if (stripeoffset == NULL) { 436 gctl_error(req, "No '%s' argument", "stripeoffset"); 437 return; 438 } 439 if (*stripeoffset < 0) { 440 gctl_error(req, "Invalid '%s' argument", "stripeoffset"); 441 return; 442 } 443 physpath = gctl_get_asciiparam(req, "physpath"); 444 445 for (i = 0; i < *nargs; i++) { 446 snprintf(param, sizeof(param), "arg%d", i); 447 name = gctl_get_asciiparam(req, param); 448 if (name == NULL) { 449 gctl_error(req, "No 'arg%d' argument", i); 450 return; 451 } 452 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 453 name += strlen("/dev/"); 454 pp = g_provider_by_name(name); 455 if (pp == NULL) { 456 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 457 gctl_error(req, "Provider %s is invalid.", name); 458 return; 459 } 460 if (g_nop_create(req, mp, pp, 461 *error == -1 ? EIO : (int)*error, 462 *rfailprob == -1 ? 0 : (u_int)*rfailprob, 463 *wfailprob == -1 ? 0 : (u_int)*wfailprob, 464 (off_t)*offset, (off_t)*size, (u_int)*secsize, 465 (u_int)*stripesize, (u_int)*stripeoffset, 466 physpath) != 0) { 467 return; 468 } 469 } 470} 471 472static void 473g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 474{ 475 struct g_nop_softc *sc; 476 struct g_provider *pp; 477 intmax_t *error, *rfailprob, *wfailprob; 478 const char *name; 479 char param[16]; 480 int i, *nargs; 481 482 g_topology_assert(); 483 484 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 485 if (nargs == NULL) { 486 gctl_error(req, "No '%s' argument", "nargs"); 487 return; 488 } 489 if (*nargs <= 0) { 490 gctl_error(req, "Missing device(s)."); 491 return; 492 } 493 error = gctl_get_paraml(req, "error", sizeof(*error)); 494 if (error == NULL) { 495 gctl_error(req, "No '%s' argument", "error"); 496 return; 497 } 498 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 499 if (rfailprob == NULL) { 500 gctl_error(req, "No '%s' argument", "rfailprob"); 501 return; 502 } 503 if (*rfailprob < -1 || *rfailprob > 100) { 504 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 505 return; 506 } 507 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 508 if (wfailprob == NULL) { 509 gctl_error(req, "No '%s' argument", "wfailprob"); 510 return; 511 } 512 if (*wfailprob < -1 || *wfailprob > 100) { 513 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 514 return; 515 } 516 517 for (i = 0; i < *nargs; i++) { 518 snprintf(param, sizeof(param), "arg%d", i); 519 name = gctl_get_asciiparam(req, param); 520 if (name == NULL) { 521 gctl_error(req, "No 'arg%d' argument", i); 522 return; 523 } 524 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 525 name += strlen("/dev/"); 526 pp = g_provider_by_name(name); 527 if (pp == NULL || pp->geom->class != mp) { 528 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 529 gctl_error(req, "Provider %s is invalid.", name); 530 return; 531 } 532 sc = pp->geom->softc; 533 if (*error != -1) 534 sc->sc_error = (int)*error; 535 if (*rfailprob != -1) 536 sc->sc_rfailprob = (u_int)*rfailprob; 537 if (*wfailprob != -1) 538 sc->sc_wfailprob = (u_int)*wfailprob; 539 } 540} 541 542static struct g_geom * 543g_nop_find_geom(struct g_class *mp, const char *name) 544{ 545 struct g_geom *gp; 546 547 LIST_FOREACH(gp, &mp->geom, geom) { 548 if (strcmp(gp->name, name) == 0) 549 return (gp); 550 } 551 return (NULL); 552} 553 554static void 555g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 556{ 557 int *nargs, *force, error, i; 558 struct g_geom *gp; 559 const char *name; 560 char param[16]; 561 562 g_topology_assert(); 563 564 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 565 if (nargs == NULL) { 566 gctl_error(req, "No '%s' argument", "nargs"); 567 return; 568 } 569 if (*nargs <= 0) { 570 gctl_error(req, "Missing device(s)."); 571 return; 572 } 573 force = gctl_get_paraml(req, "force", sizeof(*force)); 574 if (force == NULL) { 575 gctl_error(req, "No 'force' argument"); 576 return; 577 } 578 579 for (i = 0; i < *nargs; i++) { 580 snprintf(param, sizeof(param), "arg%d", i); 581 name = gctl_get_asciiparam(req, param); 582 if (name == NULL) { 583 gctl_error(req, "No 'arg%d' argument", i); 584 return; 585 } 586 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 587 name += strlen("/dev/"); 588 gp = g_nop_find_geom(mp, name); 589 if (gp == NULL) { 590 G_NOP_DEBUG(1, "Device %s is invalid.", name); 591 gctl_error(req, "Device %s is invalid.", name); 592 return; 593 } 594 error = g_nop_destroy(gp, *force); 595 if (error != 0) { 596 gctl_error(req, "Cannot destroy device %s (error=%d).", 597 gp->name, error); 598 return; 599 } 600 } 601} 602 603static void 604g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 605{ 606 struct g_nop_softc *sc; 607 struct g_provider *pp; 608 const char *name; 609 char param[16]; 610 int i, *nargs; 611 612 g_topology_assert(); 613 614 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 615 if (nargs == NULL) { 616 gctl_error(req, "No '%s' argument", "nargs"); 617 return; 618 } 619 if (*nargs <= 0) { 620 gctl_error(req, "Missing device(s)."); 621 return; 622 } 623 624 for (i = 0; i < *nargs; i++) { 625 snprintf(param, sizeof(param), "arg%d", i); 626 name = gctl_get_asciiparam(req, param); 627 if (name == NULL) { 628 gctl_error(req, "No 'arg%d' argument", i); 629 return; 630 } 631 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 632 name += strlen("/dev/"); 633 pp = g_provider_by_name(name); 634 if (pp == NULL || pp->geom->class != mp) { 635 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 636 gctl_error(req, "Provider %s is invalid.", name); 637 return; 638 } 639 sc = pp->geom->softc; 640 sc->sc_reads = 0; 641 sc->sc_writes = 0; 642 sc->sc_deletes = 0; 643 sc->sc_getattrs = 0; 644 sc->sc_flushes = 0; 645 sc->sc_cmd0s = 0; 646 sc->sc_cmd1s = 0; 647 sc->sc_cmd2s = 0; 648 sc->sc_readbytes = 0; 649 sc->sc_wrotebytes = 0; 650 } 651} 652 653static void 654g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 655{ 656 uint32_t *version; 657 658 g_topology_assert(); 659 660 version = gctl_get_paraml(req, "version", sizeof(*version)); 661 if (version == NULL) { 662 gctl_error(req, "No '%s' argument.", "version"); 663 return; 664 } 665 if (*version != G_NOP_VERSION) { 666 gctl_error(req, "Userland and kernel parts are out of sync."); 667 return; 668 } 669 670 if (strcmp(verb, "create") == 0) { 671 g_nop_ctl_create(req, mp); 672 return; 673 } else if (strcmp(verb, "configure") == 0) { 674 g_nop_ctl_configure(req, mp); 675 return; 676 } else if (strcmp(verb, "destroy") == 0) { 677 g_nop_ctl_destroy(req, mp); 678 return; 679 } else if (strcmp(verb, "reset") == 0) { 680 g_nop_ctl_reset(req, mp); 681 return; 682 } 683 684 gctl_error(req, "Unknown verb."); 685} 686 687static void 688g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 689 struct g_consumer *cp, struct g_provider *pp) 690{ 691 struct g_nop_softc *sc; 692 693 if (pp != NULL || cp != NULL) 694 return; 695 sc = gp->softc; 696 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 697 (intmax_t)sc->sc_offset); 698 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 699 sc->sc_rfailprob); 700 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 701 sc->sc_wfailprob); 702 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 703 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 704 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 705 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 706 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 707 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 708 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 709 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 710 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 711 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 712 sc->sc_readbytes); 713 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 714 sc->sc_wrotebytes); 715} 716 717DECLARE_GEOM_CLASS(g_nop_class, g_nop); 718MODULE_VERSION(geom_nop, 0); 719