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/param.h> 31 #include <sys/ctype.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/lock.h> 36 #include <sys/mutex.h> 37 #include <sys/bio.h> 38 #include <sys/sbuf.h> 39 #include <sys/sysctl.h> 40 #include <sys/malloc.h> 41 #include <geom/geom.h> 42 #include <geom/geom_dbg.h> 43 #include <geom/nop/g_nop.h> 44 45 SYSCTL_DECL(_kern_geom); 46 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 47 "GEOM_NOP stuff"); 48 static u_int g_nop_debug = 0; 49 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 50 "Debug level"); 51 52 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 53 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 54 struct g_geom *gp); 55 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 56 const char *verb); 57 static g_access_t g_nop_access; 58 static g_dumpconf_t g_nop_dumpconf; 59 static g_orphan_t g_nop_orphan; 60 static g_provgone_t g_nop_providergone; 61 static g_resize_t g_nop_resize; 62 static g_start_t g_nop_start; 63 64 struct g_class g_nop_class = { 65 .name = G_NOP_CLASS_NAME, 66 .version = G_VERSION, 67 .ctlreq = g_nop_config, 68 .destroy_geom = g_nop_destroy_geom, 69 .access = g_nop_access, 70 .dumpconf = g_nop_dumpconf, 71 .orphan = g_nop_orphan, 72 .providergone = g_nop_providergone, 73 .resize = g_nop_resize, 74 .start = g_nop_start, 75 }; 76 77 struct g_nop_delay { 78 struct callout dl_cal; 79 struct bio *dl_bio; 80 TAILQ_ENTRY(g_nop_delay) dl_next; 81 }; 82 83 static bool 84 g_nop_verify_nprefix(const char *name) 85 { 86 int i; 87 88 for (i = 0; i < strlen(name); i++) { 89 if (isalpha(name[i]) == 0 && isdigit(name[i]) == 0) { 90 return (false); 91 } 92 } 93 94 return (true); 95 } 96 97 static void 98 g_nop_orphan(struct g_consumer *cp) 99 { 100 101 g_topology_assert(); 102 g_nop_destroy(cp->geom, 1); 103 } 104 105 static void 106 g_nop_resize(struct g_consumer *cp) 107 { 108 struct g_nop_softc *sc; 109 struct g_geom *gp; 110 struct g_provider *pp; 111 off_t size; 112 113 g_topology_assert(); 114 115 gp = cp->geom; 116 sc = gp->softc; 117 118 if (sc->sc_explicitsize != 0) 119 return; 120 if (cp->provider->mediasize < sc->sc_offset) { 121 g_nop_destroy(gp, 1); 122 return; 123 } 124 size = cp->provider->mediasize - sc->sc_offset; 125 LIST_FOREACH(pp, &gp->provider, provider) 126 g_resize_provider(pp, size); 127 } 128 129 static int 130 g_nop_dumper(void *priv, void *virtual, off_t offset, size_t length) 131 { 132 133 return (0); 134 } 135 136 static void 137 g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) 138 { 139 struct g_kerneldump *gkd; 140 struct g_geom *gp; 141 struct g_provider *pp; 142 143 gkd = (struct g_kerneldump *)bp->bio_data; 144 gp = bp->bio_to->geom; 145 g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, 146 (intmax_t)gkd->offset, (intmax_t)gkd->length); 147 148 pp = LIST_FIRST(&gp->provider); 149 150 gkd->di.dumper = g_nop_dumper; 151 gkd->di.priv = sc; 152 gkd->di.blocksize = pp->sectorsize; 153 gkd->di.maxiosize = DFLTPHYS; 154 gkd->di.mediaoffset = sc->sc_offset + gkd->offset; 155 if (gkd->offset > sc->sc_explicitsize) { 156 g_io_deliver(bp, ENODEV); 157 return; 158 } 159 if (gkd->offset + gkd->length > sc->sc_explicitsize) 160 gkd->length = sc->sc_explicitsize - gkd->offset; 161 gkd->di.mediasize = gkd->length; 162 g_io_deliver(bp, 0); 163 } 164 165 static void 166 g_nop_pass(struct bio *cbp, struct g_geom *gp) 167 { 168 169 G_NOP_LOGREQ(cbp, "Sending request."); 170 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 171 } 172 173 static void 174 g_nop_pass_timeout(void *data) 175 { 176 struct g_nop_softc *sc; 177 struct g_geom *gp; 178 struct g_nop_delay *gndelay; 179 180 gndelay = (struct g_nop_delay *)data; 181 182 gp = gndelay->dl_bio->bio_to->geom; 183 sc = gp->softc; 184 185 mtx_lock(&sc->sc_lock); 186 TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); 187 mtx_unlock(&sc->sc_lock); 188 189 g_nop_pass(gndelay->dl_bio, gp); 190 191 g_free(data); 192 } 193 194 static void 195 g_nop_start(struct bio *bp) 196 { 197 struct g_nop_softc *sc; 198 struct g_geom *gp; 199 struct g_provider *pp; 200 struct bio *cbp; 201 u_int failprob, delayprob, delaytime; 202 203 failprob = delayprob = delaytime = 0; 204 205 gp = bp->bio_to->geom; 206 sc = gp->softc; 207 208 G_NOP_LOGREQ(bp, "Request received."); 209 mtx_lock(&sc->sc_lock); 210 switch (bp->bio_cmd) { 211 case BIO_READ: 212 sc->sc_reads++; 213 sc->sc_readbytes += bp->bio_length; 214 if (sc->sc_count_until_fail != 0) { 215 sc->sc_count_until_fail -= 1; 216 } else { 217 failprob = sc->sc_rfailprob; 218 delayprob = sc->sc_rdelayprob; 219 delaytime = sc->sc_delaymsec; 220 } 221 break; 222 case BIO_WRITE: 223 sc->sc_writes++; 224 sc->sc_wrotebytes += bp->bio_length; 225 if (sc->sc_count_until_fail != 0) { 226 sc->sc_count_until_fail -= 1; 227 } else { 228 failprob = sc->sc_wfailprob; 229 delayprob = sc->sc_wdelayprob; 230 delaytime = sc->sc_delaymsec; 231 } 232 break; 233 case BIO_DELETE: 234 sc->sc_deletes++; 235 break; 236 case BIO_GETATTR: 237 sc->sc_getattrs++; 238 if (sc->sc_physpath && 239 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) 240 ; 241 else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) 242 g_nop_kerneldump(bp, sc); 243 else 244 /* 245 * Fallthrough to forwarding the GETATTR down to the 246 * lower level device. 247 */ 248 break; 249 mtx_unlock(&sc->sc_lock); 250 return; 251 case BIO_FLUSH: 252 sc->sc_flushes++; 253 break; 254 case BIO_SPEEDUP: 255 sc->sc_speedups++; 256 break; 257 case BIO_CMD0: 258 sc->sc_cmd0s++; 259 break; 260 case BIO_CMD1: 261 sc->sc_cmd1s++; 262 break; 263 case BIO_CMD2: 264 sc->sc_cmd2s++; 265 break; 266 } 267 mtx_unlock(&sc->sc_lock); 268 269 if (failprob > 0) { 270 u_int rval; 271 272 rval = arc4random() % 100; 273 if (rval < failprob) { 274 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 275 g_io_deliver(bp, sc->sc_error); 276 return; 277 } 278 } 279 280 cbp = g_clone_bio(bp); 281 if (cbp == NULL) { 282 g_io_deliver(bp, ENOMEM); 283 return; 284 } 285 cbp->bio_done = g_std_done; 286 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 287 pp = LIST_FIRST(&gp->provider); 288 KASSERT(pp != NULL, ("NULL pp")); 289 cbp->bio_to = pp; 290 291 if (delayprob > 0) { 292 struct g_nop_delay *gndelay; 293 u_int rval; 294 295 rval = arc4random() % 100; 296 if (rval < delayprob) { 297 gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); 298 if (gndelay != NULL) { 299 callout_init(&gndelay->dl_cal, 1); 300 301 gndelay->dl_bio = cbp; 302 303 mtx_lock(&sc->sc_lock); 304 TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, 305 dl_next); 306 mtx_unlock(&sc->sc_lock); 307 308 callout_reset(&gndelay->dl_cal, 309 MSEC_2_TICKS(delaytime), g_nop_pass_timeout, 310 gndelay); 311 return; 312 } 313 } 314 } 315 316 g_nop_pass(cbp, gp); 317 } 318 319 static int 320 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 321 { 322 struct g_geom *gp; 323 struct g_consumer *cp; 324 int error; 325 326 gp = pp->geom; 327 cp = LIST_FIRST(&gp->consumer); 328 error = g_access(cp, dr, dw, de); 329 330 return (error); 331 } 332 333 static int 334 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 335 const char *gnopname, int ioerror, u_int count_until_fail, 336 u_int rfailprob, u_int wfailprob, u_int delaymsec, u_int rdelayprob, 337 u_int wdelayprob, off_t offset, off_t size, u_int secsize, off_t stripesize, 338 off_t stripeoffset, const char *physpath) 339 { 340 struct g_nop_softc *sc; 341 struct g_geom *gp; 342 struct g_provider *newpp; 343 struct g_consumer *cp; 344 struct g_geom_alias *gap; 345 char name[64]; 346 int error, n; 347 off_t explicitsize; 348 349 g_topology_assert(); 350 351 gp = NULL; 352 newpp = NULL; 353 cp = NULL; 354 355 if ((offset % pp->sectorsize) != 0) { 356 gctl_error(req, "Invalid offset for provider %s.", pp->name); 357 return (EINVAL); 358 } 359 if ((size % pp->sectorsize) != 0) { 360 gctl_error(req, "Invalid size for provider %s.", pp->name); 361 return (EINVAL); 362 } 363 if (offset >= pp->mediasize) { 364 gctl_error(req, "Invalid offset for provider %s.", pp->name); 365 return (EINVAL); 366 } 367 explicitsize = size; 368 if (size == 0) 369 size = pp->mediasize - offset; 370 if (offset + size > pp->mediasize) { 371 gctl_error(req, "Invalid size for provider %s.", pp->name); 372 return (EINVAL); 373 } 374 if (secsize == 0) 375 secsize = pp->sectorsize; 376 else if ((secsize % pp->sectorsize) != 0) { 377 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 378 return (EINVAL); 379 } 380 if (secsize > maxphys) { 381 gctl_error(req, "secsize is too big."); 382 return (EINVAL); 383 } 384 size -= size % secsize; 385 if ((stripesize % pp->sectorsize) != 0) { 386 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 387 return (EINVAL); 388 } 389 if ((stripeoffset % pp->sectorsize) != 0) { 390 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 391 return (EINVAL); 392 } 393 if (stripesize != 0 && stripeoffset >= stripesize) { 394 gctl_error(req, "stripeoffset is too big."); 395 return (EINVAL); 396 } 397 if (gnopname != NULL && !g_nop_verify_nprefix(gnopname)) { 398 gctl_error(req, "Name %s is invalid.", gnopname); 399 return (EINVAL); 400 } 401 402 if (gnopname != NULL) { 403 n = snprintf(name, sizeof(name), "%s%s", gnopname, 404 G_NOP_SUFFIX); 405 } else { 406 n = snprintf(name, sizeof(name), "%s%s", pp->name, 407 G_NOP_SUFFIX); 408 } 409 if (n <= 0 || n >= sizeof(name)) { 410 gctl_error(req, "Invalid provider name."); 411 return (EINVAL); 412 } 413 LIST_FOREACH(gp, &mp->geom, geom) { 414 if (strcmp(gp->name, name) == 0) { 415 gctl_error(req, "Provider %s already exists.", name); 416 return (EEXIST); 417 } 418 } 419 gp = g_new_geomf(mp, "%s", name); 420 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 421 sc->sc_offset = offset; 422 sc->sc_explicitsize = explicitsize; 423 sc->sc_stripesize = stripesize; 424 sc->sc_stripeoffset = stripeoffset; 425 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 426 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 427 } else 428 sc->sc_physpath = NULL; 429 sc->sc_error = ioerror; 430 sc->sc_count_until_fail = count_until_fail; 431 sc->sc_rfailprob = rfailprob; 432 sc->sc_wfailprob = wfailprob; 433 sc->sc_delaymsec = delaymsec; 434 sc->sc_rdelayprob = rdelayprob; 435 sc->sc_wdelayprob = wdelayprob; 436 sc->sc_reads = 0; 437 sc->sc_writes = 0; 438 sc->sc_deletes = 0; 439 sc->sc_getattrs = 0; 440 sc->sc_flushes = 0; 441 sc->sc_speedups = 0; 442 sc->sc_cmd0s = 0; 443 sc->sc_cmd1s = 0; 444 sc->sc_cmd2s = 0; 445 sc->sc_readbytes = 0; 446 sc->sc_wrotebytes = 0; 447 TAILQ_INIT(&sc->sc_head_delay); 448 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 449 gp->softc = sc; 450 451 newpp = g_new_providerf(gp, "%s", gp->name); 452 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 453 newpp->mediasize = size; 454 newpp->sectorsize = secsize; 455 newpp->stripesize = stripesize; 456 newpp->stripeoffset = stripeoffset; 457 LIST_FOREACH(gap, &pp->aliases, ga_next) 458 g_provider_add_alias(newpp, "%s%s", gap->ga_alias, G_NOP_SUFFIX); 459 460 cp = g_new_consumer(gp); 461 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 462 error = g_attach(cp, pp); 463 if (error != 0) { 464 gctl_error(req, "Cannot attach to provider %s.", pp->name); 465 goto fail; 466 } 467 468 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 469 g_error_provider(newpp, 0); 470 G_NOP_DEBUG(0, "Device %s created.", gp->name); 471 return (0); 472 fail: 473 if (cp->provider != NULL) 474 g_detach(cp); 475 g_destroy_consumer(cp); 476 g_destroy_provider(newpp); 477 mtx_destroy(&sc->sc_lock); 478 free(sc->sc_physpath, M_GEOM); 479 g_free(gp->softc); 480 g_destroy_geom(gp); 481 return (error); 482 } 483 484 static void 485 g_nop_providergone(struct g_provider *pp) 486 { 487 struct g_geom *gp = pp->geom; 488 struct g_nop_softc *sc = gp->softc; 489 490 KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), 491 ("delayed request list is not empty")); 492 493 gp->softc = NULL; 494 free(sc->sc_physpath, M_GEOM); 495 mtx_destroy(&sc->sc_lock); 496 g_free(sc); 497 } 498 499 static int 500 g_nop_destroy(struct g_geom *gp, boolean_t force) 501 { 502 struct g_nop_softc *sc; 503 struct g_provider *pp; 504 505 g_topology_assert(); 506 sc = gp->softc; 507 if (sc == NULL) 508 return (ENXIO); 509 pp = LIST_FIRST(&gp->provider); 510 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 511 if (force) { 512 G_NOP_DEBUG(0, "Device %s is still open, so it " 513 "can't be definitely removed.", pp->name); 514 } else { 515 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 516 pp->name, pp->acr, pp->acw, pp->ace); 517 return (EBUSY); 518 } 519 } else { 520 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 521 } 522 523 g_wither_geom(gp, ENXIO); 524 525 return (0); 526 } 527 528 static int 529 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 530 { 531 532 return (g_nop_destroy(gp, 0)); 533 } 534 535 static void 536 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 537 { 538 struct g_provider *pp; 539 intmax_t *val, error, rfailprob, wfailprob, count_until_fail, offset, 540 secsize, size, stripesize, stripeoffset, delaymsec, 541 rdelayprob, wdelayprob; 542 const char *physpath, *gnopname; 543 char param[16]; 544 int i, *nargs; 545 546 g_topology_assert(); 547 548 error = -1; 549 rfailprob = -1; 550 wfailprob = -1; 551 count_until_fail = -1; 552 offset = 0; 553 secsize = 0; 554 size = 0; 555 stripesize = 0; 556 stripeoffset = 0; 557 delaymsec = -1; 558 rdelayprob = -1; 559 wdelayprob = -1; 560 561 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 562 if (nargs == NULL) { 563 gctl_error(req, "No '%s' argument", "nargs"); 564 return; 565 } 566 if (*nargs <= 0) { 567 gctl_error(req, "Missing device(s)."); 568 return; 569 } 570 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 571 if (val != NULL) { 572 error = *val; 573 } 574 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 575 if (val != NULL) { 576 rfailprob = *val; 577 if (rfailprob < -1 || rfailprob > 100) { 578 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 579 return; 580 } 581 } 582 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 583 if (val != NULL) { 584 wfailprob = *val; 585 if (wfailprob < -1 || wfailprob > 100) { 586 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 587 return; 588 } 589 } 590 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 591 if (val != NULL) { 592 delaymsec = *val; 593 if (delaymsec < 1 && delaymsec != -1) { 594 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 595 return; 596 } 597 } 598 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 599 if (val != NULL) { 600 rdelayprob = *val; 601 if (rdelayprob < -1 || rdelayprob > 100) { 602 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 603 return; 604 } 605 } 606 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 607 if (val != NULL) { 608 wdelayprob = *val; 609 if (wdelayprob < -1 || wdelayprob > 100) { 610 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 611 return; 612 } 613 } 614 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 615 if (val != NULL) { 616 count_until_fail = *val; 617 if (count_until_fail < -1) { 618 gctl_error(req, "Invalid '%s' argument", 619 "count_until_fail"); 620 return; 621 } 622 } 623 val = gctl_get_paraml_opt(req, "offset", sizeof(*val)); 624 if (val != NULL) { 625 offset = *val; 626 if (offset < 0) { 627 gctl_error(req, "Invalid '%s' argument", "offset"); 628 return; 629 } 630 } 631 val = gctl_get_paraml_opt(req, "size", sizeof(*val)); 632 if (val != NULL) { 633 size = *val; 634 if (size < 0) { 635 gctl_error(req, "Invalid '%s' argument", "size"); 636 return; 637 } 638 } 639 val = gctl_get_paraml_opt(req, "secsize", sizeof(*val)); 640 if (val != NULL) { 641 secsize = *val; 642 if (secsize < 0) { 643 gctl_error(req, "Invalid '%s' argument", "secsize"); 644 return; 645 } 646 } 647 val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val)); 648 if (val != NULL) { 649 stripesize = *val; 650 if (stripesize < 0) { 651 gctl_error(req, "Invalid '%s' argument", "stripesize"); 652 return; 653 } 654 } 655 val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val)); 656 if (val != NULL) { 657 stripeoffset = *val; 658 if (stripeoffset < 0) { 659 gctl_error(req, "Invalid '%s' argument", 660 "stripeoffset"); 661 return; 662 } 663 } 664 physpath = gctl_get_asciiparam(req, "physpath"); 665 gnopname = gctl_get_asciiparam(req, "gnopname"); 666 667 for (i = 0; i < *nargs; i++) { 668 snprintf(param, sizeof(param), "arg%d", i); 669 pp = gctl_get_provider(req, param); 670 if (pp == NULL) 671 return; 672 if (g_nop_create(req, mp, pp, 673 gnopname, 674 error == -1 ? EIO : (int)error, 675 count_until_fail == -1 ? 0 : (u_int)count_until_fail, 676 rfailprob == -1 ? 0 : (u_int)rfailprob, 677 wfailprob == -1 ? 0 : (u_int)wfailprob, 678 delaymsec == -1 ? 1 : (u_int)delaymsec, 679 rdelayprob == -1 ? 0 : (u_int)rdelayprob, 680 wdelayprob == -1 ? 0 : (u_int)wdelayprob, 681 (off_t)offset, (off_t)size, (u_int)secsize, 682 (off_t)stripesize, (off_t)stripeoffset, 683 physpath) != 0) { 684 return; 685 } 686 } 687 } 688 689 static void 690 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 691 { 692 struct g_nop_softc *sc; 693 struct g_provider *pp; 694 intmax_t *val, delaymsec, error, rdelayprob, rfailprob, wdelayprob, 695 wfailprob, count_until_fail; 696 char param[16]; 697 int i, *nargs; 698 699 g_topology_assert(); 700 701 count_until_fail = -1; 702 delaymsec = -1; 703 error = -1; 704 rdelayprob = -1; 705 rfailprob = -1; 706 wdelayprob = -1; 707 wfailprob = -1; 708 709 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 710 if (nargs == NULL) { 711 gctl_error(req, "No '%s' argument", "nargs"); 712 return; 713 } 714 if (*nargs <= 0) { 715 gctl_error(req, "Missing device(s)."); 716 return; 717 } 718 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 719 if (val != NULL) { 720 error = *val; 721 } 722 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 723 if (val != NULL) { 724 count_until_fail = *val; 725 } 726 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 727 if (val != NULL) { 728 rfailprob = *val; 729 if (rfailprob < -1 || rfailprob > 100) { 730 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 731 return; 732 } 733 } 734 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 735 if (val != NULL) { 736 wfailprob = *val; 737 if (wfailprob < -1 || wfailprob > 100) { 738 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 739 return; 740 } 741 } 742 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 743 if (val != NULL) { 744 delaymsec = *val; 745 if (delaymsec < 1 && delaymsec != -1) { 746 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 747 return; 748 } 749 } 750 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 751 if (val != NULL) { 752 rdelayprob = *val; 753 if (rdelayprob < -1 || rdelayprob > 100) { 754 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 755 return; 756 } 757 } 758 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 759 if (val != NULL) { 760 wdelayprob = *val; 761 if (wdelayprob < -1 || wdelayprob > 100) { 762 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 763 return; 764 } 765 } 766 767 for (i = 0; i < *nargs; i++) { 768 snprintf(param, sizeof(param), "arg%d", i); 769 pp = gctl_get_provider(req, param); 770 if (pp == NULL) 771 return; 772 if (pp->geom->class != mp) { 773 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 774 gctl_error(req, "Provider %s is invalid.", pp->name); 775 return; 776 } 777 sc = pp->geom->softc; 778 if (error != -1) 779 sc->sc_error = (int)error; 780 if (rfailprob != -1) 781 sc->sc_rfailprob = (u_int)rfailprob; 782 if (wfailprob != -1) 783 sc->sc_wfailprob = (u_int)wfailprob; 784 if (rdelayprob != -1) 785 sc->sc_rdelayprob = (u_int)rdelayprob; 786 if (wdelayprob != -1) 787 sc->sc_wdelayprob = (u_int)wdelayprob; 788 if (delaymsec != -1) 789 sc->sc_delaymsec = (u_int)delaymsec; 790 if (count_until_fail != -1) 791 sc->sc_count_until_fail = (u_int)count_until_fail; 792 } 793 } 794 795 static struct g_geom * 796 g_nop_find_geom(struct g_class *mp, const char *name) 797 { 798 struct g_geom *gp; 799 800 LIST_FOREACH(gp, &mp->geom, geom) { 801 if (strcmp(gp->name, name) == 0) 802 return (gp); 803 } 804 return (NULL); 805 } 806 807 static void 808 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 809 { 810 int *nargs, *force, error, i; 811 struct g_geom *gp; 812 const char *name; 813 char param[16]; 814 815 g_topology_assert(); 816 817 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 818 if (nargs == NULL) { 819 gctl_error(req, "No '%s' argument", "nargs"); 820 return; 821 } 822 if (*nargs <= 0) { 823 gctl_error(req, "Missing device(s)."); 824 return; 825 } 826 force = gctl_get_paraml(req, "force", sizeof(*force)); 827 if (force == NULL) { 828 gctl_error(req, "No 'force' argument"); 829 return; 830 } 831 832 for (i = 0; i < *nargs; i++) { 833 snprintf(param, sizeof(param), "arg%d", i); 834 name = gctl_get_asciiparam(req, param); 835 if (name == NULL) { 836 gctl_error(req, "No 'arg%d' argument", i); 837 return; 838 } 839 if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0) 840 name += strlen(_PATH_DEV); 841 gp = g_nop_find_geom(mp, name); 842 if (gp == NULL) { 843 G_NOP_DEBUG(1, "Device %s is invalid.", name); 844 gctl_error(req, "Device %s is invalid.", name); 845 return; 846 } 847 error = g_nop_destroy(gp, *force); 848 if (error != 0) { 849 gctl_error(req, "Cannot destroy device %s (error=%d).", 850 gp->name, error); 851 return; 852 } 853 } 854 } 855 856 static void 857 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 858 { 859 struct g_nop_softc *sc; 860 struct g_provider *pp; 861 char param[16]; 862 int i, *nargs; 863 864 g_topology_assert(); 865 866 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 867 if (nargs == NULL) { 868 gctl_error(req, "No '%s' argument", "nargs"); 869 return; 870 } 871 if (*nargs <= 0) { 872 gctl_error(req, "Missing device(s)."); 873 return; 874 } 875 876 for (i = 0; i < *nargs; i++) { 877 snprintf(param, sizeof(param), "arg%d", i); 878 pp = gctl_get_provider(req, param); 879 if (pp == NULL) 880 return; 881 if (pp->geom->class != mp) { 882 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 883 gctl_error(req, "Provider %s is invalid.", pp->name); 884 return; 885 } 886 sc = pp->geom->softc; 887 sc->sc_reads = 0; 888 sc->sc_writes = 0; 889 sc->sc_deletes = 0; 890 sc->sc_getattrs = 0; 891 sc->sc_flushes = 0; 892 sc->sc_speedups = 0; 893 sc->sc_cmd0s = 0; 894 sc->sc_cmd1s = 0; 895 sc->sc_cmd2s = 0; 896 sc->sc_readbytes = 0; 897 sc->sc_wrotebytes = 0; 898 } 899 } 900 901 static void 902 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 903 { 904 uint32_t *version; 905 906 g_topology_assert(); 907 908 version = gctl_get_paraml(req, "version", sizeof(*version)); 909 if (version == NULL) { 910 gctl_error(req, "No '%s' argument.", "version"); 911 return; 912 } 913 if (*version != G_NOP_VERSION) { 914 gctl_error(req, "Userland and kernel parts are out of sync."); 915 return; 916 } 917 918 if (strcmp(verb, "create") == 0) { 919 g_nop_ctl_create(req, mp); 920 return; 921 } else if (strcmp(verb, "configure") == 0) { 922 g_nop_ctl_configure(req, mp); 923 return; 924 } else if (strcmp(verb, "destroy") == 0) { 925 g_nop_ctl_destroy(req, mp); 926 return; 927 } else if (strcmp(verb, "reset") == 0) { 928 g_nop_ctl_reset(req, mp); 929 return; 930 } 931 932 gctl_error(req, "Unknown verb."); 933 } 934 935 static void 936 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 937 struct g_consumer *cp, struct g_provider *pp) 938 { 939 struct g_nop_softc *sc; 940 941 if (pp != NULL || cp != NULL) 942 return; 943 sc = gp->softc; 944 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 945 (intmax_t)sc->sc_offset); 946 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 947 sc->sc_rfailprob); 948 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 949 sc->sc_wfailprob); 950 sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, 951 sc->sc_rdelayprob); 952 sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, 953 sc->sc_wdelayprob); 954 sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); 955 sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, 956 sc->sc_count_until_fail); 957 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 958 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 959 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 960 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 961 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 962 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 963 sbuf_printf(sb, "%s<Speedups>%ju</Speedups>\n", indent, sc->sc_speedups); 964 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 965 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 966 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 967 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 968 sc->sc_readbytes); 969 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 970 sc->sc_wrotebytes); 971 } 972 973 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 974 MODULE_VERSION(geom_nop, 0); 975