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/geom_dbg.h> 44 #include <geom/nop/g_nop.h> 45 46 47 SYSCTL_DECL(_kern_geom); 48 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW, 0, "GEOM_NOP stuff"); 49 static u_int g_nop_debug = 0; 50 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 51 "Debug level"); 52 53 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 54 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 55 struct g_geom *gp); 56 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 57 const char *verb); 58 static g_access_t g_nop_access; 59 static g_dumpconf_t g_nop_dumpconf; 60 static g_orphan_t g_nop_orphan; 61 static g_provgone_t g_nop_providergone; 62 static g_resize_t g_nop_resize; 63 static g_start_t g_nop_start; 64 65 struct g_class g_nop_class = { 66 .name = G_NOP_CLASS_NAME, 67 .version = G_VERSION, 68 .ctlreq = g_nop_config, 69 .destroy_geom = g_nop_destroy_geom, 70 .access = g_nop_access, 71 .dumpconf = g_nop_dumpconf, 72 .orphan = g_nop_orphan, 73 .providergone = g_nop_providergone, 74 .resize = g_nop_resize, 75 .start = g_nop_start, 76 }; 77 78 struct g_nop_delay { 79 struct callout dl_cal; 80 struct bio *dl_bio; 81 TAILQ_ENTRY(g_nop_delay) dl_next; 82 }; 83 84 static void 85 g_nop_orphan(struct g_consumer *cp) 86 { 87 88 g_topology_assert(); 89 g_nop_destroy(cp->geom, 1); 90 } 91 92 static void 93 g_nop_resize(struct g_consumer *cp) 94 { 95 struct g_nop_softc *sc; 96 struct g_geom *gp; 97 struct g_provider *pp; 98 off_t size; 99 100 g_topology_assert(); 101 102 gp = cp->geom; 103 sc = gp->softc; 104 105 if (sc->sc_explicitsize != 0) 106 return; 107 if (cp->provider->mediasize < sc->sc_offset) { 108 g_nop_destroy(gp, 1); 109 return; 110 } 111 size = cp->provider->mediasize - sc->sc_offset; 112 LIST_FOREACH(pp, &gp->provider, provider) 113 g_resize_provider(pp, size); 114 } 115 116 static int 117 g_nop_dumper(void *priv, void *virtual, vm_offset_t physical, off_t offset, 118 size_t length) 119 { 120 121 return (0); 122 } 123 124 static void 125 g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) 126 { 127 struct g_kerneldump *gkd; 128 struct g_geom *gp; 129 struct g_provider *pp; 130 131 gkd = (struct g_kerneldump *)bp->bio_data; 132 gp = bp->bio_to->geom; 133 g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, 134 (intmax_t)gkd->offset, (intmax_t)gkd->length); 135 136 pp = LIST_FIRST(&gp->provider); 137 138 gkd->di.dumper = g_nop_dumper; 139 gkd->di.priv = sc; 140 gkd->di.blocksize = pp->sectorsize; 141 gkd->di.maxiosize = DFLTPHYS; 142 gkd->di.mediaoffset = sc->sc_offset + gkd->offset; 143 if (gkd->offset > sc->sc_explicitsize) { 144 g_io_deliver(bp, ENODEV); 145 return; 146 } 147 if (gkd->offset + gkd->length > sc->sc_explicitsize) 148 gkd->length = sc->sc_explicitsize - gkd->offset; 149 gkd->di.mediasize = gkd->length; 150 g_io_deliver(bp, 0); 151 } 152 153 static void 154 g_nop_pass(struct bio *cbp, struct g_geom *gp) 155 { 156 157 G_NOP_LOGREQ(cbp, "Sending request."); 158 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 159 } 160 161 static void 162 g_nop_pass_timeout(void *data) 163 { 164 struct g_nop_softc *sc; 165 struct g_geom *gp; 166 struct g_nop_delay *gndelay; 167 168 gndelay = (struct g_nop_delay *)data; 169 170 gp = gndelay->dl_bio->bio_to->geom; 171 sc = gp->softc; 172 173 mtx_lock(&sc->sc_lock); 174 TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); 175 mtx_unlock(&sc->sc_lock); 176 177 g_nop_pass(gndelay->dl_bio, gp); 178 179 g_free(data); 180 } 181 182 static void 183 g_nop_start(struct bio *bp) 184 { 185 struct g_nop_softc *sc; 186 struct g_geom *gp; 187 struct g_provider *pp; 188 struct bio *cbp; 189 u_int failprob, delayprob, delaytime; 190 191 failprob = delayprob = 0; 192 193 gp = bp->bio_to->geom; 194 sc = gp->softc; 195 196 G_NOP_LOGREQ(bp, "Request received."); 197 mtx_lock(&sc->sc_lock); 198 if (sc->sc_count_until_fail != 0 && --sc->sc_count_until_fail == 0) { 199 sc->sc_rfailprob = 100; 200 sc->sc_wfailprob = 100; 201 } 202 switch (bp->bio_cmd) { 203 case BIO_READ: 204 sc->sc_reads++; 205 sc->sc_readbytes += bp->bio_length; 206 failprob = sc->sc_rfailprob; 207 delayprob = sc->sc_rdelayprob; 208 delaytime = sc->sc_delaymsec; 209 break; 210 case BIO_WRITE: 211 sc->sc_writes++; 212 sc->sc_wrotebytes += bp->bio_length; 213 failprob = sc->sc_wfailprob; 214 delayprob = sc->sc_wdelayprob; 215 delaytime = sc->sc_delaymsec; 216 break; 217 case BIO_DELETE: 218 sc->sc_deletes++; 219 break; 220 case BIO_GETATTR: 221 sc->sc_getattrs++; 222 if (sc->sc_physpath && 223 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) 224 ; 225 else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) 226 g_nop_kerneldump(bp, sc); 227 else 228 /* 229 * Fallthrough to forwarding the GETATTR down to the 230 * lower level device. 231 */ 232 break; 233 mtx_unlock(&sc->sc_lock); 234 return; 235 case BIO_FLUSH: 236 sc->sc_flushes++; 237 break; 238 case BIO_CMD0: 239 sc->sc_cmd0s++; 240 break; 241 case BIO_CMD1: 242 sc->sc_cmd1s++; 243 break; 244 case BIO_CMD2: 245 sc->sc_cmd2s++; 246 break; 247 } 248 mtx_unlock(&sc->sc_lock); 249 if (failprob > 0) { 250 u_int rval; 251 252 rval = arc4random() % 100; 253 if (rval < failprob) { 254 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 255 g_io_deliver(bp, sc->sc_error); 256 return; 257 } 258 } 259 260 cbp = g_clone_bio(bp); 261 if (cbp == NULL) { 262 g_io_deliver(bp, ENOMEM); 263 return; 264 } 265 cbp->bio_done = g_std_done; 266 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 267 pp = LIST_FIRST(&gp->provider); 268 KASSERT(pp != NULL, ("NULL pp")); 269 cbp->bio_to = pp; 270 271 if (delayprob > 0) { 272 struct g_nop_delay *gndelay; 273 u_int rval; 274 275 rval = arc4random() % 100; 276 if (rval < delayprob) { 277 gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); 278 if (gndelay != NULL) { 279 callout_init(&gndelay->dl_cal, 1); 280 281 gndelay->dl_bio = cbp; 282 283 mtx_lock(&sc->sc_lock); 284 TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, 285 dl_next); 286 mtx_unlock(&sc->sc_lock); 287 288 callout_reset(&gndelay->dl_cal, 289 MSEC_2_TICKS(delaytime), g_nop_pass_timeout, 290 gndelay); 291 return; 292 } 293 } 294 } 295 296 g_nop_pass(cbp, gp); 297 } 298 299 static int 300 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 301 { 302 struct g_geom *gp; 303 struct g_consumer *cp; 304 int error; 305 306 gp = pp->geom; 307 cp = LIST_FIRST(&gp->consumer); 308 error = g_access(cp, dr, dw, de); 309 310 return (error); 311 } 312 313 static int 314 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 315 int ioerror, u_int count_until_fail, u_int rfailprob, u_int wfailprob, 316 u_int delaymsec, u_int rdelayprob, u_int wdelayprob, off_t offset, 317 off_t size, u_int secsize, off_t stripesize, off_t stripeoffset, 318 const char *physpath) 319 { 320 struct g_nop_softc *sc; 321 struct g_geom *gp; 322 struct g_provider *newpp; 323 struct g_consumer *cp; 324 char name[64]; 325 int error; 326 off_t explicitsize; 327 328 g_topology_assert(); 329 330 gp = NULL; 331 newpp = NULL; 332 cp = NULL; 333 334 if ((offset % pp->sectorsize) != 0) { 335 gctl_error(req, "Invalid offset for provider %s.", pp->name); 336 return (EINVAL); 337 } 338 if ((size % pp->sectorsize) != 0) { 339 gctl_error(req, "Invalid size for provider %s.", pp->name); 340 return (EINVAL); 341 } 342 if (offset >= pp->mediasize) { 343 gctl_error(req, "Invalid offset for provider %s.", pp->name); 344 return (EINVAL); 345 } 346 explicitsize = size; 347 if (size == 0) 348 size = pp->mediasize - offset; 349 if (offset + size > pp->mediasize) { 350 gctl_error(req, "Invalid size for provider %s.", pp->name); 351 return (EINVAL); 352 } 353 if (secsize == 0) 354 secsize = pp->sectorsize; 355 else if ((secsize % pp->sectorsize) != 0) { 356 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 357 return (EINVAL); 358 } 359 if (secsize > MAXPHYS) { 360 gctl_error(req, "secsize is too big."); 361 return (EINVAL); 362 } 363 size -= size % secsize; 364 if ((stripesize % pp->sectorsize) != 0) { 365 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 366 return (EINVAL); 367 } 368 if ((stripeoffset % pp->sectorsize) != 0) { 369 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 370 return (EINVAL); 371 } 372 if (stripesize != 0 && stripeoffset >= stripesize) { 373 gctl_error(req, "stripeoffset is too big."); 374 return (EINVAL); 375 } 376 snprintf(name, sizeof(name), "%s%s", pp->name, G_NOP_SUFFIX); 377 LIST_FOREACH(gp, &mp->geom, geom) { 378 if (strcmp(gp->name, name) == 0) { 379 gctl_error(req, "Provider %s already exists.", name); 380 return (EEXIST); 381 } 382 } 383 gp = g_new_geomf(mp, "%s", name); 384 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 385 sc->sc_offset = offset; 386 sc->sc_explicitsize = explicitsize; 387 sc->sc_stripesize = stripesize; 388 sc->sc_stripeoffset = stripeoffset; 389 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 390 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 391 } else 392 sc->sc_physpath = NULL; 393 sc->sc_error = ioerror; 394 sc->sc_count_until_fail = count_until_fail; 395 sc->sc_rfailprob = rfailprob; 396 sc->sc_wfailprob = wfailprob; 397 sc->sc_delaymsec = delaymsec; 398 sc->sc_rdelayprob = rdelayprob; 399 sc->sc_wdelayprob = wdelayprob; 400 sc->sc_reads = 0; 401 sc->sc_writes = 0; 402 sc->sc_deletes = 0; 403 sc->sc_getattrs = 0; 404 sc->sc_flushes = 0; 405 sc->sc_cmd0s = 0; 406 sc->sc_cmd1s = 0; 407 sc->sc_cmd2s = 0; 408 sc->sc_readbytes = 0; 409 sc->sc_wrotebytes = 0; 410 TAILQ_INIT(&sc->sc_head_delay); 411 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 412 gp->softc = sc; 413 414 newpp = g_new_providerf(gp, "%s", gp->name); 415 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 416 newpp->mediasize = size; 417 newpp->sectorsize = secsize; 418 newpp->stripesize = stripesize; 419 newpp->stripeoffset = stripeoffset; 420 421 cp = g_new_consumer(gp); 422 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 423 error = g_attach(cp, pp); 424 if (error != 0) { 425 gctl_error(req, "Cannot attach to provider %s.", pp->name); 426 goto fail; 427 } 428 429 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 430 g_error_provider(newpp, 0); 431 G_NOP_DEBUG(0, "Device %s created.", gp->name); 432 return (0); 433 fail: 434 if (cp->provider != NULL) 435 g_detach(cp); 436 g_destroy_consumer(cp); 437 g_destroy_provider(newpp); 438 mtx_destroy(&sc->sc_lock); 439 free(sc->sc_physpath, M_GEOM); 440 g_free(gp->softc); 441 g_destroy_geom(gp); 442 return (error); 443 } 444 445 static void 446 g_nop_providergone(struct g_provider *pp) 447 { 448 struct g_geom *gp = pp->geom; 449 struct g_nop_softc *sc = gp->softc; 450 451 KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), 452 ("delayed request list is not empty")); 453 454 gp->softc = NULL; 455 free(sc->sc_physpath, M_GEOM); 456 mtx_destroy(&sc->sc_lock); 457 g_free(sc); 458 } 459 460 static int 461 g_nop_destroy(struct g_geom *gp, boolean_t force) 462 { 463 struct g_nop_softc *sc; 464 struct g_provider *pp; 465 466 g_topology_assert(); 467 sc = gp->softc; 468 if (sc == NULL) 469 return (ENXIO); 470 pp = LIST_FIRST(&gp->provider); 471 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 472 if (force) { 473 G_NOP_DEBUG(0, "Device %s is still open, so it " 474 "can't be definitely removed.", pp->name); 475 } else { 476 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 477 pp->name, pp->acr, pp->acw, pp->ace); 478 return (EBUSY); 479 } 480 } else { 481 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 482 } 483 484 g_wither_geom(gp, ENXIO); 485 486 return (0); 487 } 488 489 static int 490 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 491 { 492 493 return (g_nop_destroy(gp, 0)); 494 } 495 496 static void 497 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 498 { 499 struct g_provider *pp; 500 intmax_t *error, *rfailprob, *wfailprob, *count_until_fail, *offset, 501 *secsize, *size, *stripesize, *stripeoffset, *delaymsec, 502 *rdelayprob, *wdelayprob; 503 const char *name, *physpath; 504 char param[16]; 505 int i, *nargs; 506 507 g_topology_assert(); 508 509 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 510 if (nargs == NULL) { 511 gctl_error(req, "No '%s' argument", "nargs"); 512 return; 513 } 514 if (*nargs <= 0) { 515 gctl_error(req, "Missing device(s)."); 516 return; 517 } 518 error = gctl_get_paraml(req, "error", sizeof(*error)); 519 if (error == NULL) { 520 gctl_error(req, "No '%s' argument", "error"); 521 return; 522 } 523 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 524 if (rfailprob == NULL) { 525 gctl_error(req, "No '%s' argument", "rfailprob"); 526 return; 527 } 528 if (*rfailprob < -1 || *rfailprob > 100) { 529 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 530 return; 531 } 532 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 533 if (wfailprob == NULL) { 534 gctl_error(req, "No '%s' argument", "wfailprob"); 535 return; 536 } 537 if (*wfailprob < -1 || *wfailprob > 100) { 538 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 539 return; 540 } 541 delaymsec = gctl_get_paraml(req, "delaymsec", sizeof(*delaymsec)); 542 if (delaymsec == NULL) { 543 gctl_error(req, "No '%s' argument", "delaymsec"); 544 return; 545 } 546 if (*delaymsec < 1 && *delaymsec != -1) { 547 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 548 return; 549 } 550 rdelayprob = gctl_get_paraml(req, "rdelayprob", sizeof(*rdelayprob)); 551 if (rdelayprob == NULL) { 552 gctl_error(req, "No '%s' argument", "rdelayprob"); 553 return; 554 } 555 if (*rdelayprob < -1 || *rdelayprob > 100) { 556 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 557 return; 558 } 559 wdelayprob = gctl_get_paraml(req, "wdelayprob", sizeof(*wdelayprob)); 560 if (wdelayprob == NULL) { 561 gctl_error(req, "No '%s' argument", "wdelayprob"); 562 return; 563 } 564 if (*wdelayprob < -1 || *wdelayprob > 100) { 565 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 566 return; 567 } 568 count_until_fail = gctl_get_paraml(req, "count_until_fail", 569 sizeof(*count_until_fail)); 570 if (count_until_fail == NULL) { 571 gctl_error(req, "No '%s' argument", "count_until_fail"); 572 return; 573 } 574 if (*count_until_fail < -1) { 575 gctl_error(req, "Invalid '%s' argument", "count_until_fail"); 576 return; 577 } 578 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 579 if (offset == NULL) { 580 gctl_error(req, "No '%s' argument", "offset"); 581 return; 582 } 583 if (*offset < 0) { 584 gctl_error(req, "Invalid '%s' argument", "offset"); 585 return; 586 } 587 size = gctl_get_paraml(req, "size", sizeof(*size)); 588 if (size == NULL) { 589 gctl_error(req, "No '%s' argument", "size"); 590 return; 591 } 592 if (*size < 0) { 593 gctl_error(req, "Invalid '%s' argument", "size"); 594 return; 595 } 596 secsize = gctl_get_paraml(req, "secsize", sizeof(*secsize)); 597 if (secsize == NULL) { 598 gctl_error(req, "No '%s' argument", "secsize"); 599 return; 600 } 601 if (*secsize < 0) { 602 gctl_error(req, "Invalid '%s' argument", "secsize"); 603 return; 604 } 605 stripesize = gctl_get_paraml(req, "stripesize", sizeof(*stripesize)); 606 if (stripesize == NULL) { 607 gctl_error(req, "No '%s' argument", "stripesize"); 608 return; 609 } 610 if (*stripesize < 0) { 611 gctl_error(req, "Invalid '%s' argument", "stripesize"); 612 return; 613 } 614 stripeoffset = gctl_get_paraml(req, "stripeoffset", sizeof(*stripeoffset)); 615 if (stripeoffset == NULL) { 616 gctl_error(req, "No '%s' argument", "stripeoffset"); 617 return; 618 } 619 if (*stripeoffset < 0) { 620 gctl_error(req, "Invalid '%s' argument", "stripeoffset"); 621 return; 622 } 623 physpath = gctl_get_asciiparam(req, "physpath"); 624 625 for (i = 0; i < *nargs; i++) { 626 snprintf(param, sizeof(param), "arg%d", i); 627 name = gctl_get_asciiparam(req, param); 628 if (name == NULL) { 629 gctl_error(req, "No 'arg%d' argument", i); 630 return; 631 } 632 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 633 name += strlen("/dev/"); 634 pp = g_provider_by_name(name); 635 if (pp == NULL) { 636 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 637 gctl_error(req, "Provider %s is invalid.", name); 638 return; 639 } 640 if (g_nop_create(req, mp, pp, 641 *error == -1 ? EIO : (int)*error, 642 *count_until_fail == -1 ? 0 : (u_int)*count_until_fail, 643 *rfailprob == -1 ? 0 : (u_int)*rfailprob, 644 *wfailprob == -1 ? 0 : (u_int)*wfailprob, 645 *delaymsec == -1 ? 1 : (u_int)*delaymsec, 646 *rdelayprob == -1 ? 0 : (u_int)*rdelayprob, 647 *wdelayprob == -1 ? 0 : (u_int)*wdelayprob, 648 (off_t)*offset, (off_t)*size, (u_int)*secsize, 649 (off_t)*stripesize, (off_t)*stripeoffset, 650 physpath) != 0) { 651 return; 652 } 653 } 654 } 655 656 static void 657 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 658 { 659 struct g_nop_softc *sc; 660 struct g_provider *pp; 661 intmax_t *delaymsec, *error, *rdelayprob, *rfailprob, *wdelayprob, 662 *wfailprob, *count_until_fail; 663 const char *name; 664 char param[16]; 665 int i, *nargs; 666 667 g_topology_assert(); 668 669 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 670 if (nargs == NULL) { 671 gctl_error(req, "No '%s' argument", "nargs"); 672 return; 673 } 674 if (*nargs <= 0) { 675 gctl_error(req, "Missing device(s)."); 676 return; 677 } 678 error = gctl_get_paraml(req, "error", sizeof(*error)); 679 if (error == NULL) { 680 gctl_error(req, "No '%s' argument", "error"); 681 return; 682 } 683 count_until_fail = gctl_get_paraml(req, "count_until_fail", 684 sizeof(*count_until_fail)); 685 if (count_until_fail == NULL) { 686 gctl_error(req, "No '%s' argument", "count_until_fail"); 687 return; 688 } 689 rfailprob = gctl_get_paraml(req, "rfailprob", sizeof(*rfailprob)); 690 if (rfailprob == NULL) { 691 gctl_error(req, "No '%s' argument", "rfailprob"); 692 return; 693 } 694 if (*rfailprob < -1 || *rfailprob > 100) { 695 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 696 return; 697 } 698 wfailprob = gctl_get_paraml(req, "wfailprob", sizeof(*wfailprob)); 699 if (wfailprob == NULL) { 700 gctl_error(req, "No '%s' argument", "wfailprob"); 701 return; 702 } 703 if (*wfailprob < -1 || *wfailprob > 100) { 704 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 705 return; 706 } 707 708 delaymsec = gctl_get_paraml(req, "delaymsec", sizeof(*delaymsec)); 709 if (delaymsec == NULL) { 710 gctl_error(req, "No '%s' argument", "delaymsec"); 711 return; 712 } 713 if (*delaymsec < 1 && *delaymsec != -1) { 714 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 715 return; 716 } 717 rdelayprob = gctl_get_paraml(req, "rdelayprob", sizeof(*rdelayprob)); 718 if (rdelayprob == NULL) { 719 gctl_error(req, "No '%s' argument", "rdelayprob"); 720 return; 721 } 722 if (*rdelayprob < -1 || *rdelayprob > 100) { 723 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 724 return; 725 } 726 wdelayprob = gctl_get_paraml(req, "wdelayprob", sizeof(*wdelayprob)); 727 if (wdelayprob == NULL) { 728 gctl_error(req, "No '%s' argument", "wdelayprob"); 729 return; 730 } 731 if (*wdelayprob < -1 || *wdelayprob > 100) { 732 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 733 return; 734 } 735 736 for (i = 0; i < *nargs; i++) { 737 snprintf(param, sizeof(param), "arg%d", i); 738 name = gctl_get_asciiparam(req, param); 739 if (name == NULL) { 740 gctl_error(req, "No 'arg%d' argument", i); 741 return; 742 } 743 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 744 name += strlen("/dev/"); 745 pp = g_provider_by_name(name); 746 if (pp == NULL || pp->geom->class != mp) { 747 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 748 gctl_error(req, "Provider %s is invalid.", name); 749 return; 750 } 751 sc = pp->geom->softc; 752 if (*error != -1) 753 sc->sc_error = (int)*error; 754 if (*rfailprob != -1) 755 sc->sc_rfailprob = (u_int)*rfailprob; 756 if (*wfailprob != -1) 757 sc->sc_wfailprob = (u_int)*wfailprob; 758 if (*rdelayprob != -1) 759 sc->sc_rdelayprob = (u_int)*rdelayprob; 760 if (*wdelayprob != -1) 761 sc->sc_wdelayprob = (u_int)*wdelayprob; 762 if (*delaymsec != -1) 763 sc->sc_delaymsec = (u_int)*delaymsec; 764 if (*count_until_fail != -1) 765 sc->sc_count_until_fail = (u_int)*count_until_fail; 766 } 767 } 768 769 static struct g_geom * 770 g_nop_find_geom(struct g_class *mp, const char *name) 771 { 772 struct g_geom *gp; 773 774 LIST_FOREACH(gp, &mp->geom, geom) { 775 if (strcmp(gp->name, name) == 0) 776 return (gp); 777 } 778 return (NULL); 779 } 780 781 static void 782 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 783 { 784 int *nargs, *force, error, i; 785 struct g_geom *gp; 786 const char *name; 787 char param[16]; 788 789 g_topology_assert(); 790 791 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 792 if (nargs == NULL) { 793 gctl_error(req, "No '%s' argument", "nargs"); 794 return; 795 } 796 if (*nargs <= 0) { 797 gctl_error(req, "Missing device(s)."); 798 return; 799 } 800 force = gctl_get_paraml(req, "force", sizeof(*force)); 801 if (force == NULL) { 802 gctl_error(req, "No 'force' argument"); 803 return; 804 } 805 806 for (i = 0; i < *nargs; i++) { 807 snprintf(param, sizeof(param), "arg%d", i); 808 name = gctl_get_asciiparam(req, param); 809 if (name == NULL) { 810 gctl_error(req, "No 'arg%d' argument", i); 811 return; 812 } 813 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 814 name += strlen("/dev/"); 815 gp = g_nop_find_geom(mp, name); 816 if (gp == NULL) { 817 G_NOP_DEBUG(1, "Device %s is invalid.", name); 818 gctl_error(req, "Device %s is invalid.", name); 819 return; 820 } 821 error = g_nop_destroy(gp, *force); 822 if (error != 0) { 823 gctl_error(req, "Cannot destroy device %s (error=%d).", 824 gp->name, error); 825 return; 826 } 827 } 828 } 829 830 static void 831 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 832 { 833 struct g_nop_softc *sc; 834 struct g_provider *pp; 835 const char *name; 836 char param[16]; 837 int i, *nargs; 838 839 g_topology_assert(); 840 841 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 842 if (nargs == NULL) { 843 gctl_error(req, "No '%s' argument", "nargs"); 844 return; 845 } 846 if (*nargs <= 0) { 847 gctl_error(req, "Missing device(s)."); 848 return; 849 } 850 851 for (i = 0; i < *nargs; i++) { 852 snprintf(param, sizeof(param), "arg%d", i); 853 name = gctl_get_asciiparam(req, param); 854 if (name == NULL) { 855 gctl_error(req, "No 'arg%d' argument", i); 856 return; 857 } 858 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 859 name += strlen("/dev/"); 860 pp = g_provider_by_name(name); 861 if (pp == NULL || pp->geom->class != mp) { 862 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 863 gctl_error(req, "Provider %s is invalid.", name); 864 return; 865 } 866 sc = pp->geom->softc; 867 sc->sc_reads = 0; 868 sc->sc_writes = 0; 869 sc->sc_deletes = 0; 870 sc->sc_getattrs = 0; 871 sc->sc_flushes = 0; 872 sc->sc_cmd0s = 0; 873 sc->sc_cmd1s = 0; 874 sc->sc_cmd2s = 0; 875 sc->sc_readbytes = 0; 876 sc->sc_wrotebytes = 0; 877 } 878 } 879 880 static void 881 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 882 { 883 uint32_t *version; 884 885 g_topology_assert(); 886 887 version = gctl_get_paraml(req, "version", sizeof(*version)); 888 if (version == NULL) { 889 gctl_error(req, "No '%s' argument.", "version"); 890 return; 891 } 892 if (*version != G_NOP_VERSION) { 893 gctl_error(req, "Userland and kernel parts are out of sync."); 894 return; 895 } 896 897 if (strcmp(verb, "create") == 0) { 898 g_nop_ctl_create(req, mp); 899 return; 900 } else if (strcmp(verb, "configure") == 0) { 901 g_nop_ctl_configure(req, mp); 902 return; 903 } else if (strcmp(verb, "destroy") == 0) { 904 g_nop_ctl_destroy(req, mp); 905 return; 906 } else if (strcmp(verb, "reset") == 0) { 907 g_nop_ctl_reset(req, mp); 908 return; 909 } 910 911 gctl_error(req, "Unknown verb."); 912 } 913 914 static void 915 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 916 struct g_consumer *cp, struct g_provider *pp) 917 { 918 struct g_nop_softc *sc; 919 920 if (pp != NULL || cp != NULL) 921 return; 922 sc = gp->softc; 923 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 924 (intmax_t)sc->sc_offset); 925 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 926 sc->sc_rfailprob); 927 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 928 sc->sc_wfailprob); 929 sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, 930 sc->sc_rdelayprob); 931 sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, 932 sc->sc_wdelayprob); 933 sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); 934 sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, 935 sc->sc_count_until_fail); 936 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 937 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 938 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 939 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 940 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 941 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 942 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 943 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 944 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 945 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 946 sc->sc_readbytes); 947 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 948 sc->sc_wrotebytes); 949 } 950 951 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 952 MODULE_VERSION(geom_nop, 0); 953