1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * Copyright (c) 2019 Mariusz Zaborski <oshogbo@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include <sys/param.h> 32 #include <sys/ctype.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 SYSCTL_DECL(_kern_geom); 47 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 48 "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 bool 85 g_nop_verify_nprefix(const char *name) 86 { 87 int i; 88 89 for (i = 0; i < strlen(name); i++) { 90 if (isalpha(name[i]) == 0 && isdigit(name[i]) == 0) { 91 return (false); 92 } 93 } 94 95 return (true); 96 } 97 98 static void 99 g_nop_orphan(struct g_consumer *cp) 100 { 101 102 g_topology_assert(); 103 g_nop_destroy(cp->geom, 1); 104 } 105 106 static void 107 g_nop_resize(struct g_consumer *cp) 108 { 109 struct g_nop_softc *sc; 110 struct g_geom *gp; 111 struct g_provider *pp; 112 off_t size; 113 114 g_topology_assert(); 115 116 gp = cp->geom; 117 sc = gp->softc; 118 119 if (sc->sc_explicitsize != 0) 120 return; 121 if (cp->provider->mediasize < sc->sc_offset) { 122 g_nop_destroy(gp, 1); 123 return; 124 } 125 size = cp->provider->mediasize - sc->sc_offset; 126 LIST_FOREACH(pp, &gp->provider, provider) 127 g_resize_provider(pp, size); 128 } 129 130 static int 131 g_nop_dumper(void *priv, void *virtual, off_t offset, size_t length) 132 { 133 134 return (0); 135 } 136 137 static void 138 g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) 139 { 140 struct g_kerneldump *gkd; 141 struct g_geom *gp; 142 struct g_provider *pp; 143 144 gkd = (struct g_kerneldump *)bp->bio_data; 145 gp = bp->bio_to->geom; 146 g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, 147 (intmax_t)gkd->offset, (intmax_t)gkd->length); 148 149 pp = LIST_FIRST(&gp->provider); 150 151 gkd->di.dumper = g_nop_dumper; 152 gkd->di.priv = sc; 153 gkd->di.blocksize = pp->sectorsize; 154 gkd->di.maxiosize = DFLTPHYS; 155 gkd->di.mediaoffset = sc->sc_offset + gkd->offset; 156 if (gkd->offset > sc->sc_explicitsize) { 157 g_io_deliver(bp, ENODEV); 158 return; 159 } 160 if (gkd->offset + gkd->length > sc->sc_explicitsize) 161 gkd->length = sc->sc_explicitsize - gkd->offset; 162 gkd->di.mediasize = gkd->length; 163 g_io_deliver(bp, 0); 164 } 165 166 static void 167 g_nop_pass(struct bio *cbp, struct g_geom *gp) 168 { 169 170 G_NOP_LOGREQ(cbp, "Sending request."); 171 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 172 } 173 174 static void 175 g_nop_pass_timeout(void *data) 176 { 177 struct g_nop_softc *sc; 178 struct g_geom *gp; 179 struct g_nop_delay *gndelay; 180 181 gndelay = (struct g_nop_delay *)data; 182 183 gp = gndelay->dl_bio->bio_to->geom; 184 sc = gp->softc; 185 186 mtx_lock(&sc->sc_lock); 187 TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); 188 mtx_unlock(&sc->sc_lock); 189 190 g_nop_pass(gndelay->dl_bio, gp); 191 192 g_free(data); 193 } 194 195 static void 196 g_nop_start(struct bio *bp) 197 { 198 struct g_nop_softc *sc; 199 struct g_geom *gp; 200 struct g_provider *pp; 201 struct bio *cbp; 202 u_int failprob, delayprob, delaytime; 203 204 failprob = delayprob = delaytime = 0; 205 206 gp = bp->bio_to->geom; 207 sc = gp->softc; 208 209 G_NOP_LOGREQ(bp, "Request received."); 210 mtx_lock(&sc->sc_lock); 211 switch (bp->bio_cmd) { 212 case BIO_READ: 213 sc->sc_reads++; 214 sc->sc_readbytes += bp->bio_length; 215 if (sc->sc_count_until_fail != 0) { 216 sc->sc_count_until_fail -= 1; 217 } else { 218 failprob = sc->sc_rfailprob; 219 delayprob = sc->sc_rdelayprob; 220 delaytime = sc->sc_delaymsec; 221 } 222 break; 223 case BIO_WRITE: 224 sc->sc_writes++; 225 sc->sc_wrotebytes += bp->bio_length; 226 if (sc->sc_count_until_fail != 0) { 227 sc->sc_count_until_fail -= 1; 228 } else { 229 failprob = sc->sc_wfailprob; 230 delayprob = sc->sc_wdelayprob; 231 delaytime = sc->sc_delaymsec; 232 } 233 break; 234 case BIO_DELETE: 235 sc->sc_deletes++; 236 break; 237 case BIO_GETATTR: 238 sc->sc_getattrs++; 239 if (sc->sc_physpath && 240 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) 241 ; 242 else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) 243 g_nop_kerneldump(bp, sc); 244 else 245 /* 246 * Fallthrough to forwarding the GETATTR down to the 247 * lower level device. 248 */ 249 break; 250 mtx_unlock(&sc->sc_lock); 251 return; 252 case BIO_FLUSH: 253 sc->sc_flushes++; 254 break; 255 case BIO_SPEEDUP: 256 sc->sc_speedups++; 257 break; 258 case BIO_CMD0: 259 sc->sc_cmd0s++; 260 break; 261 case BIO_CMD1: 262 sc->sc_cmd1s++; 263 break; 264 case BIO_CMD2: 265 sc->sc_cmd2s++; 266 break; 267 } 268 mtx_unlock(&sc->sc_lock); 269 270 if (failprob > 0) { 271 u_int rval; 272 273 rval = arc4random() % 100; 274 if (rval < failprob) { 275 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 276 g_io_deliver(bp, sc->sc_error); 277 return; 278 } 279 } 280 281 cbp = g_clone_bio(bp); 282 if (cbp == NULL) { 283 g_io_deliver(bp, ENOMEM); 284 return; 285 } 286 cbp->bio_done = g_std_done; 287 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 288 pp = LIST_FIRST(&gp->provider); 289 KASSERT(pp != NULL, ("NULL pp")); 290 cbp->bio_to = pp; 291 292 if (delayprob > 0) { 293 struct g_nop_delay *gndelay; 294 u_int rval; 295 296 rval = arc4random() % 100; 297 if (rval < delayprob) { 298 gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); 299 if (gndelay != NULL) { 300 callout_init(&gndelay->dl_cal, 1); 301 302 gndelay->dl_bio = cbp; 303 304 mtx_lock(&sc->sc_lock); 305 TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, 306 dl_next); 307 mtx_unlock(&sc->sc_lock); 308 309 callout_reset(&gndelay->dl_cal, 310 MSEC_2_TICKS(delaytime), g_nop_pass_timeout, 311 gndelay); 312 return; 313 } 314 } 315 } 316 317 g_nop_pass(cbp, gp); 318 } 319 320 static int 321 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 322 { 323 struct g_geom *gp; 324 struct g_consumer *cp; 325 int error; 326 327 gp = pp->geom; 328 cp = LIST_FIRST(&gp->consumer); 329 error = g_access(cp, dr, dw, de); 330 331 return (error); 332 } 333 334 static int 335 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 336 const char *gnopname, int ioerror, u_int count_until_fail, 337 u_int rfailprob, u_int wfailprob, u_int delaymsec, u_int rdelayprob, 338 u_int wdelayprob, off_t offset, off_t size, u_int secsize, off_t stripesize, 339 off_t stripeoffset, const char *physpath) 340 { 341 struct g_nop_softc *sc; 342 struct g_geom *gp; 343 struct g_provider *newpp; 344 struct g_consumer *cp; 345 struct g_geom_alias *gap; 346 char name[64]; 347 int error, n; 348 off_t explicitsize; 349 350 g_topology_assert(); 351 352 gp = NULL; 353 newpp = NULL; 354 cp = NULL; 355 356 if ((offset % pp->sectorsize) != 0) { 357 gctl_error(req, "Invalid offset for provider %s.", pp->name); 358 return (EINVAL); 359 } 360 if ((size % pp->sectorsize) != 0) { 361 gctl_error(req, "Invalid size for provider %s.", pp->name); 362 return (EINVAL); 363 } 364 if (offset >= pp->mediasize) { 365 gctl_error(req, "Invalid offset for provider %s.", pp->name); 366 return (EINVAL); 367 } 368 explicitsize = size; 369 if (size == 0) 370 size = pp->mediasize - offset; 371 if (offset + size > pp->mediasize) { 372 gctl_error(req, "Invalid size for provider %s.", pp->name); 373 return (EINVAL); 374 } 375 if (secsize == 0) 376 secsize = pp->sectorsize; 377 else if ((secsize % pp->sectorsize) != 0) { 378 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 379 return (EINVAL); 380 } 381 if (secsize > maxphys) { 382 gctl_error(req, "secsize is too big."); 383 return (EINVAL); 384 } 385 size -= size % secsize; 386 if ((stripesize % pp->sectorsize) != 0) { 387 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 388 return (EINVAL); 389 } 390 if ((stripeoffset % pp->sectorsize) != 0) { 391 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 392 return (EINVAL); 393 } 394 if (stripesize != 0 && stripeoffset >= stripesize) { 395 gctl_error(req, "stripeoffset is too big."); 396 return (EINVAL); 397 } 398 if (gnopname != NULL && !g_nop_verify_nprefix(gnopname)) { 399 gctl_error(req, "Name %s is invalid.", gnopname); 400 return (EINVAL); 401 } 402 403 if (gnopname != NULL) { 404 n = snprintf(name, sizeof(name), "%s%s", gnopname, 405 G_NOP_SUFFIX); 406 } else { 407 n = snprintf(name, sizeof(name), "%s%s", pp->name, 408 G_NOP_SUFFIX); 409 } 410 if (n <= 0 || n >= sizeof(name)) { 411 gctl_error(req, "Invalid provider name."); 412 return (EINVAL); 413 } 414 LIST_FOREACH(gp, &mp->geom, geom) { 415 if (strcmp(gp->name, name) == 0) { 416 gctl_error(req, "Provider %s already exists.", name); 417 return (EEXIST); 418 } 419 } 420 gp = g_new_geomf(mp, "%s", name); 421 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 422 sc->sc_offset = offset; 423 sc->sc_explicitsize = explicitsize; 424 sc->sc_stripesize = stripesize; 425 sc->sc_stripeoffset = stripeoffset; 426 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 427 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 428 } else 429 sc->sc_physpath = NULL; 430 sc->sc_error = ioerror; 431 sc->sc_count_until_fail = count_until_fail; 432 sc->sc_rfailprob = rfailprob; 433 sc->sc_wfailprob = wfailprob; 434 sc->sc_delaymsec = delaymsec; 435 sc->sc_rdelayprob = rdelayprob; 436 sc->sc_wdelayprob = wdelayprob; 437 sc->sc_reads = 0; 438 sc->sc_writes = 0; 439 sc->sc_deletes = 0; 440 sc->sc_getattrs = 0; 441 sc->sc_flushes = 0; 442 sc->sc_speedups = 0; 443 sc->sc_cmd0s = 0; 444 sc->sc_cmd1s = 0; 445 sc->sc_cmd2s = 0; 446 sc->sc_readbytes = 0; 447 sc->sc_wrotebytes = 0; 448 TAILQ_INIT(&sc->sc_head_delay); 449 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 450 gp->softc = sc; 451 452 newpp = g_new_providerf(gp, "%s", gp->name); 453 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 454 newpp->mediasize = size; 455 newpp->sectorsize = secsize; 456 newpp->stripesize = stripesize; 457 newpp->stripeoffset = stripeoffset; 458 LIST_FOREACH(gap, &pp->aliases, ga_next) 459 g_provider_add_alias(newpp, "%s%s", gap->ga_alias, G_NOP_SUFFIX); 460 461 cp = g_new_consumer(gp); 462 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 463 error = g_attach(cp, pp); 464 if (error != 0) { 465 gctl_error(req, "Cannot attach to provider %s.", pp->name); 466 goto fail; 467 } 468 469 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 470 g_error_provider(newpp, 0); 471 G_NOP_DEBUG(0, "Device %s created.", gp->name); 472 return (0); 473 fail: 474 if (cp->provider != NULL) 475 g_detach(cp); 476 g_destroy_consumer(cp); 477 g_destroy_provider(newpp); 478 mtx_destroy(&sc->sc_lock); 479 free(sc->sc_physpath, M_GEOM); 480 g_free(gp->softc); 481 g_destroy_geom(gp); 482 return (error); 483 } 484 485 static void 486 g_nop_providergone(struct g_provider *pp) 487 { 488 struct g_geom *gp = pp->geom; 489 struct g_nop_softc *sc = gp->softc; 490 491 KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), 492 ("delayed request list is not empty")); 493 494 gp->softc = NULL; 495 free(sc->sc_physpath, M_GEOM); 496 mtx_destroy(&sc->sc_lock); 497 g_free(sc); 498 } 499 500 static int 501 g_nop_destroy(struct g_geom *gp, boolean_t force) 502 { 503 struct g_nop_softc *sc; 504 struct g_provider *pp; 505 506 g_topology_assert(); 507 sc = gp->softc; 508 if (sc == NULL) 509 return (ENXIO); 510 pp = LIST_FIRST(&gp->provider); 511 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 512 if (force) { 513 G_NOP_DEBUG(0, "Device %s is still open, so it " 514 "can't be definitely removed.", pp->name); 515 } else { 516 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 517 pp->name, pp->acr, pp->acw, pp->ace); 518 return (EBUSY); 519 } 520 } else { 521 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 522 } 523 524 g_wither_geom(gp, ENXIO); 525 526 return (0); 527 } 528 529 static int 530 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 531 { 532 533 return (g_nop_destroy(gp, 0)); 534 } 535 536 static void 537 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 538 { 539 struct g_provider *pp; 540 intmax_t *val, error, rfailprob, wfailprob, count_until_fail, offset, 541 secsize, size, stripesize, stripeoffset, delaymsec, 542 rdelayprob, wdelayprob; 543 const char *physpath, *gnopname; 544 char param[16]; 545 int i, *nargs; 546 547 g_topology_assert(); 548 549 error = -1; 550 rfailprob = -1; 551 wfailprob = -1; 552 count_until_fail = -1; 553 offset = 0; 554 secsize = 0; 555 size = 0; 556 stripesize = 0; 557 stripeoffset = 0; 558 delaymsec = -1; 559 rdelayprob = -1; 560 wdelayprob = -1; 561 562 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 563 if (nargs == NULL) { 564 gctl_error(req, "No '%s' argument", "nargs"); 565 return; 566 } 567 if (*nargs <= 0) { 568 gctl_error(req, "Missing device(s)."); 569 return; 570 } 571 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 572 if (val != NULL) { 573 error = *val; 574 } 575 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 576 if (val != NULL) { 577 rfailprob = *val; 578 if (rfailprob < -1 || rfailprob > 100) { 579 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 580 return; 581 } 582 } 583 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 584 if (val != NULL) { 585 wfailprob = *val; 586 if (wfailprob < -1 || wfailprob > 100) { 587 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 588 return; 589 } 590 } 591 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 592 if (val != NULL) { 593 delaymsec = *val; 594 if (delaymsec < 1 && delaymsec != -1) { 595 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 596 return; 597 } 598 } 599 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 600 if (val != NULL) { 601 rdelayprob = *val; 602 if (rdelayprob < -1 || rdelayprob > 100) { 603 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 604 return; 605 } 606 } 607 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 608 if (val != NULL) { 609 wdelayprob = *val; 610 if (wdelayprob < -1 || wdelayprob > 100) { 611 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 612 return; 613 } 614 } 615 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 616 if (val != NULL) { 617 count_until_fail = *val; 618 if (count_until_fail < -1) { 619 gctl_error(req, "Invalid '%s' argument", 620 "count_until_fail"); 621 return; 622 } 623 } 624 val = gctl_get_paraml_opt(req, "offset", sizeof(*val)); 625 if (val != NULL) { 626 offset = *val; 627 if (offset < 0) { 628 gctl_error(req, "Invalid '%s' argument", "offset"); 629 return; 630 } 631 } 632 val = gctl_get_paraml_opt(req, "size", sizeof(*val)); 633 if (val != NULL) { 634 size = *val; 635 if (size < 0) { 636 gctl_error(req, "Invalid '%s' argument", "size"); 637 return; 638 } 639 } 640 val = gctl_get_paraml_opt(req, "secsize", sizeof(*val)); 641 if (val != NULL) { 642 secsize = *val; 643 if (secsize < 0) { 644 gctl_error(req, "Invalid '%s' argument", "secsize"); 645 return; 646 } 647 } 648 val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val)); 649 if (val != NULL) { 650 stripesize = *val; 651 if (stripesize < 0) { 652 gctl_error(req, "Invalid '%s' argument", "stripesize"); 653 return; 654 } 655 } 656 val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val)); 657 if (val != NULL) { 658 stripeoffset = *val; 659 if (stripeoffset < 0) { 660 gctl_error(req, "Invalid '%s' argument", 661 "stripeoffset"); 662 return; 663 } 664 } 665 physpath = gctl_get_asciiparam(req, "physpath"); 666 gnopname = gctl_get_asciiparam(req, "gnopname"); 667 668 for (i = 0; i < *nargs; i++) { 669 snprintf(param, sizeof(param), "arg%d", i); 670 pp = gctl_get_provider(req, param); 671 if (pp == NULL) 672 return; 673 if (g_nop_create(req, mp, pp, 674 gnopname, 675 error == -1 ? EIO : (int)error, 676 count_until_fail == -1 ? 0 : (u_int)count_until_fail, 677 rfailprob == -1 ? 0 : (u_int)rfailprob, 678 wfailprob == -1 ? 0 : (u_int)wfailprob, 679 delaymsec == -1 ? 1 : (u_int)delaymsec, 680 rdelayprob == -1 ? 0 : (u_int)rdelayprob, 681 wdelayprob == -1 ? 0 : (u_int)wdelayprob, 682 (off_t)offset, (off_t)size, (u_int)secsize, 683 (off_t)stripesize, (off_t)stripeoffset, 684 physpath) != 0) { 685 return; 686 } 687 } 688 } 689 690 static void 691 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 692 { 693 struct g_nop_softc *sc; 694 struct g_provider *pp; 695 intmax_t *val, delaymsec, error, rdelayprob, rfailprob, wdelayprob, 696 wfailprob, count_until_fail; 697 char param[16]; 698 int i, *nargs; 699 700 g_topology_assert(); 701 702 count_until_fail = -1; 703 delaymsec = -1; 704 error = -1; 705 rdelayprob = -1; 706 rfailprob = -1; 707 wdelayprob = -1; 708 wfailprob = -1; 709 710 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 711 if (nargs == NULL) { 712 gctl_error(req, "No '%s' argument", "nargs"); 713 return; 714 } 715 if (*nargs <= 0) { 716 gctl_error(req, "Missing device(s)."); 717 return; 718 } 719 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 720 if (val != NULL) { 721 error = *val; 722 } 723 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 724 if (val != NULL) { 725 count_until_fail = *val; 726 } 727 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 728 if (val != NULL) { 729 rfailprob = *val; 730 if (rfailprob < -1 || rfailprob > 100) { 731 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 732 return; 733 } 734 } 735 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 736 if (val != NULL) { 737 wfailprob = *val; 738 if (wfailprob < -1 || wfailprob > 100) { 739 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 740 return; 741 } 742 } 743 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 744 if (val != NULL) { 745 delaymsec = *val; 746 if (delaymsec < 1 && delaymsec != -1) { 747 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 748 return; 749 } 750 } 751 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 752 if (val != NULL) { 753 rdelayprob = *val; 754 if (rdelayprob < -1 || rdelayprob > 100) { 755 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 756 return; 757 } 758 } 759 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 760 if (val != NULL) { 761 wdelayprob = *val; 762 if (wdelayprob < -1 || wdelayprob > 100) { 763 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 764 return; 765 } 766 } 767 768 for (i = 0; i < *nargs; i++) { 769 snprintf(param, sizeof(param), "arg%d", i); 770 pp = gctl_get_provider(req, param); 771 if (pp == NULL) 772 return; 773 if (pp->geom->class != mp) { 774 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 775 gctl_error(req, "Provider %s is invalid.", pp->name); 776 return; 777 } 778 sc = pp->geom->softc; 779 if (error != -1) 780 sc->sc_error = (int)error; 781 if (rfailprob != -1) 782 sc->sc_rfailprob = (u_int)rfailprob; 783 if (wfailprob != -1) 784 sc->sc_wfailprob = (u_int)wfailprob; 785 if (rdelayprob != -1) 786 sc->sc_rdelayprob = (u_int)rdelayprob; 787 if (wdelayprob != -1) 788 sc->sc_wdelayprob = (u_int)wdelayprob; 789 if (delaymsec != -1) 790 sc->sc_delaymsec = (u_int)delaymsec; 791 if (count_until_fail != -1) 792 sc->sc_count_until_fail = (u_int)count_until_fail; 793 } 794 } 795 796 static struct g_geom * 797 g_nop_find_geom(struct g_class *mp, const char *name) 798 { 799 struct g_geom *gp; 800 801 LIST_FOREACH(gp, &mp->geom, geom) { 802 if (strcmp(gp->name, name) == 0) 803 return (gp); 804 } 805 return (NULL); 806 } 807 808 static void 809 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 810 { 811 int *nargs, *force, error, i; 812 struct g_geom *gp; 813 const char *name; 814 char param[16]; 815 816 g_topology_assert(); 817 818 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 819 if (nargs == NULL) { 820 gctl_error(req, "No '%s' argument", "nargs"); 821 return; 822 } 823 if (*nargs <= 0) { 824 gctl_error(req, "Missing device(s)."); 825 return; 826 } 827 force = gctl_get_paraml(req, "force", sizeof(*force)); 828 if (force == NULL) { 829 gctl_error(req, "No 'force' argument"); 830 return; 831 } 832 833 for (i = 0; i < *nargs; i++) { 834 snprintf(param, sizeof(param), "arg%d", i); 835 name = gctl_get_asciiparam(req, param); 836 if (name == NULL) { 837 gctl_error(req, "No 'arg%d' argument", i); 838 return; 839 } 840 if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0) 841 name += strlen(_PATH_DEV); 842 gp = g_nop_find_geom(mp, name); 843 if (gp == NULL) { 844 G_NOP_DEBUG(1, "Device %s is invalid.", name); 845 gctl_error(req, "Device %s is invalid.", name); 846 return; 847 } 848 error = g_nop_destroy(gp, *force); 849 if (error != 0) { 850 gctl_error(req, "Cannot destroy device %s (error=%d).", 851 gp->name, error); 852 return; 853 } 854 } 855 } 856 857 static void 858 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 859 { 860 struct g_nop_softc *sc; 861 struct g_provider *pp; 862 char param[16]; 863 int i, *nargs; 864 865 g_topology_assert(); 866 867 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 868 if (nargs == NULL) { 869 gctl_error(req, "No '%s' argument", "nargs"); 870 return; 871 } 872 if (*nargs <= 0) { 873 gctl_error(req, "Missing device(s)."); 874 return; 875 } 876 877 for (i = 0; i < *nargs; i++) { 878 snprintf(param, sizeof(param), "arg%d", i); 879 pp = gctl_get_provider(req, param); 880 if (pp == NULL) 881 return; 882 if (pp->geom->class != mp) { 883 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 884 gctl_error(req, "Provider %s is invalid.", pp->name); 885 return; 886 } 887 sc = pp->geom->softc; 888 sc->sc_reads = 0; 889 sc->sc_writes = 0; 890 sc->sc_deletes = 0; 891 sc->sc_getattrs = 0; 892 sc->sc_flushes = 0; 893 sc->sc_speedups = 0; 894 sc->sc_cmd0s = 0; 895 sc->sc_cmd1s = 0; 896 sc->sc_cmd2s = 0; 897 sc->sc_readbytes = 0; 898 sc->sc_wrotebytes = 0; 899 } 900 } 901 902 static void 903 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 904 { 905 uint32_t *version; 906 907 g_topology_assert(); 908 909 version = gctl_get_paraml(req, "version", sizeof(*version)); 910 if (version == NULL) { 911 gctl_error(req, "No '%s' argument.", "version"); 912 return; 913 } 914 if (*version != G_NOP_VERSION) { 915 gctl_error(req, "Userland and kernel parts are out of sync."); 916 return; 917 } 918 919 if (strcmp(verb, "create") == 0) { 920 g_nop_ctl_create(req, mp); 921 return; 922 } else if (strcmp(verb, "configure") == 0) { 923 g_nop_ctl_configure(req, mp); 924 return; 925 } else if (strcmp(verb, "destroy") == 0) { 926 g_nop_ctl_destroy(req, mp); 927 return; 928 } else if (strcmp(verb, "reset") == 0) { 929 g_nop_ctl_reset(req, mp); 930 return; 931 } 932 933 gctl_error(req, "Unknown verb."); 934 } 935 936 static void 937 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 938 struct g_consumer *cp, struct g_provider *pp) 939 { 940 struct g_nop_softc *sc; 941 942 if (pp != NULL || cp != NULL) 943 return; 944 sc = gp->softc; 945 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 946 (intmax_t)sc->sc_offset); 947 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 948 sc->sc_rfailprob); 949 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 950 sc->sc_wfailprob); 951 sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, 952 sc->sc_rdelayprob); 953 sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, 954 sc->sc_wdelayprob); 955 sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); 956 sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, 957 sc->sc_count_until_fail); 958 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 959 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 960 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 961 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 962 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 963 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 964 sbuf_printf(sb, "%s<Speedups>%ju</Speedups>\n", indent, sc->sc_speedups); 965 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 966 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 967 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 968 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 969 sc->sc_readbytes); 970 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 971 sc->sc_wrotebytes); 972 } 973 974 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 975 MODULE_VERSION(geom_nop, 0); 976