1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/ctype.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/bio.h> 41 #include <sys/sbuf.h> 42 #include <sys/sysctl.h> 43 #include <sys/malloc.h> 44 #include <geom/geom.h> 45 #include <geom/geom_dbg.h> 46 #include <geom/nop/g_nop.h> 47 48 SYSCTL_DECL(_kern_geom); 49 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 50 "GEOM_NOP stuff"); 51 static u_int g_nop_debug = 0; 52 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 53 "Debug level"); 54 55 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 56 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 57 struct g_geom *gp); 58 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 59 const char *verb); 60 static g_access_t g_nop_access; 61 static g_dumpconf_t g_nop_dumpconf; 62 static g_orphan_t g_nop_orphan; 63 static g_provgone_t g_nop_providergone; 64 static g_resize_t g_nop_resize; 65 static g_start_t g_nop_start; 66 67 struct g_class g_nop_class = { 68 .name = G_NOP_CLASS_NAME, 69 .version = G_VERSION, 70 .ctlreq = g_nop_config, 71 .destroy_geom = g_nop_destroy_geom, 72 .access = g_nop_access, 73 .dumpconf = g_nop_dumpconf, 74 .orphan = g_nop_orphan, 75 .providergone = g_nop_providergone, 76 .resize = g_nop_resize, 77 .start = g_nop_start, 78 }; 79 80 struct g_nop_delay { 81 struct callout dl_cal; 82 struct bio *dl_bio; 83 TAILQ_ENTRY(g_nop_delay) dl_next; 84 }; 85 86 static bool 87 g_nop_verify_nprefix(const char *name) 88 { 89 int i; 90 91 for (i = 0; i < strlen(name); i++) { 92 if (isalpha(name[i]) == 0 && isdigit(name[i]) == 0) { 93 return (false); 94 } 95 } 96 97 return (true); 98 } 99 100 static void 101 g_nop_orphan(struct g_consumer *cp) 102 { 103 104 g_topology_assert(); 105 g_nop_destroy(cp->geom, 1); 106 } 107 108 static void 109 g_nop_resize(struct g_consumer *cp) 110 { 111 struct g_nop_softc *sc; 112 struct g_geom *gp; 113 struct g_provider *pp; 114 off_t size; 115 116 g_topology_assert(); 117 118 gp = cp->geom; 119 sc = gp->softc; 120 121 if (sc->sc_explicitsize != 0) 122 return; 123 if (cp->provider->mediasize < sc->sc_offset) { 124 g_nop_destroy(gp, 1); 125 return; 126 } 127 size = cp->provider->mediasize - sc->sc_offset; 128 LIST_FOREACH(pp, &gp->provider, provider) 129 g_resize_provider(pp, size); 130 } 131 132 static int 133 g_nop_dumper(void *priv, void *virtual, vm_offset_t physical, off_t offset, 134 size_t length) 135 { 136 137 return (0); 138 } 139 140 static void 141 g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) 142 { 143 struct g_kerneldump *gkd; 144 struct g_geom *gp; 145 struct g_provider *pp; 146 147 gkd = (struct g_kerneldump *)bp->bio_data; 148 gp = bp->bio_to->geom; 149 g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, 150 (intmax_t)gkd->offset, (intmax_t)gkd->length); 151 152 pp = LIST_FIRST(&gp->provider); 153 154 gkd->di.dumper = g_nop_dumper; 155 gkd->di.priv = sc; 156 gkd->di.blocksize = pp->sectorsize; 157 gkd->di.maxiosize = DFLTPHYS; 158 gkd->di.mediaoffset = sc->sc_offset + gkd->offset; 159 if (gkd->offset > sc->sc_explicitsize) { 160 g_io_deliver(bp, ENODEV); 161 return; 162 } 163 if (gkd->offset + gkd->length > sc->sc_explicitsize) 164 gkd->length = sc->sc_explicitsize - gkd->offset; 165 gkd->di.mediasize = gkd->length; 166 g_io_deliver(bp, 0); 167 } 168 169 static void 170 g_nop_pass(struct bio *cbp, struct g_geom *gp) 171 { 172 173 G_NOP_LOGREQ(cbp, "Sending request."); 174 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 175 } 176 177 static void 178 g_nop_pass_timeout(void *data) 179 { 180 struct g_nop_softc *sc; 181 struct g_geom *gp; 182 struct g_nop_delay *gndelay; 183 184 gndelay = (struct g_nop_delay *)data; 185 186 gp = gndelay->dl_bio->bio_to->geom; 187 sc = gp->softc; 188 189 mtx_lock(&sc->sc_lock); 190 TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); 191 mtx_unlock(&sc->sc_lock); 192 193 g_nop_pass(gndelay->dl_bio, gp); 194 195 g_free(data); 196 } 197 198 static void 199 g_nop_start(struct bio *bp) 200 { 201 struct g_nop_softc *sc; 202 struct g_geom *gp; 203 struct g_provider *pp; 204 struct bio *cbp; 205 u_int failprob, delayprob, delaytime; 206 207 failprob = delayprob = delaytime = 0; 208 209 gp = bp->bio_to->geom; 210 sc = gp->softc; 211 212 G_NOP_LOGREQ(bp, "Request received."); 213 mtx_lock(&sc->sc_lock); 214 switch (bp->bio_cmd) { 215 case BIO_READ: 216 sc->sc_reads++; 217 sc->sc_readbytes += bp->bio_length; 218 if (sc->sc_count_until_fail != 0) { 219 sc->sc_count_until_fail -= 1; 220 } else { 221 failprob = sc->sc_rfailprob; 222 delayprob = sc->sc_rdelayprob; 223 delaytime = sc->sc_delaymsec; 224 } 225 break; 226 case BIO_WRITE: 227 sc->sc_writes++; 228 sc->sc_wrotebytes += bp->bio_length; 229 if (sc->sc_count_until_fail != 0) { 230 sc->sc_count_until_fail -= 1; 231 } else { 232 failprob = sc->sc_wfailprob; 233 delayprob = sc->sc_wdelayprob; 234 delaytime = sc->sc_delaymsec; 235 } 236 break; 237 case BIO_DELETE: 238 sc->sc_deletes++; 239 break; 240 case BIO_GETATTR: 241 sc->sc_getattrs++; 242 if (sc->sc_physpath && 243 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) 244 ; 245 else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) 246 g_nop_kerneldump(bp, sc); 247 else 248 /* 249 * Fallthrough to forwarding the GETATTR down to the 250 * lower level device. 251 */ 252 break; 253 mtx_unlock(&sc->sc_lock); 254 return; 255 case BIO_FLUSH: 256 sc->sc_flushes++; 257 break; 258 case BIO_SPEEDUP: 259 sc->sc_speedups++; 260 break; 261 case BIO_CMD0: 262 sc->sc_cmd0s++; 263 break; 264 case BIO_CMD1: 265 sc->sc_cmd1s++; 266 break; 267 case BIO_CMD2: 268 sc->sc_cmd2s++; 269 break; 270 } 271 mtx_unlock(&sc->sc_lock); 272 273 if (failprob > 0) { 274 u_int rval; 275 276 rval = arc4random() % 100; 277 if (rval < failprob) { 278 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 279 g_io_deliver(bp, sc->sc_error); 280 return; 281 } 282 } 283 284 cbp = g_clone_bio(bp); 285 if (cbp == NULL) { 286 g_io_deliver(bp, ENOMEM); 287 return; 288 } 289 cbp->bio_done = g_std_done; 290 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 291 pp = LIST_FIRST(&gp->provider); 292 KASSERT(pp != NULL, ("NULL pp")); 293 cbp->bio_to = pp; 294 295 if (delayprob > 0) { 296 struct g_nop_delay *gndelay; 297 u_int rval; 298 299 rval = arc4random() % 100; 300 if (rval < delayprob) { 301 gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); 302 if (gndelay != NULL) { 303 callout_init(&gndelay->dl_cal, 1); 304 305 gndelay->dl_bio = cbp; 306 307 mtx_lock(&sc->sc_lock); 308 TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, 309 dl_next); 310 mtx_unlock(&sc->sc_lock); 311 312 callout_reset(&gndelay->dl_cal, 313 MSEC_2_TICKS(delaytime), g_nop_pass_timeout, 314 gndelay); 315 return; 316 } 317 } 318 } 319 320 g_nop_pass(cbp, gp); 321 } 322 323 static int 324 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 325 { 326 struct g_geom *gp; 327 struct g_consumer *cp; 328 int error; 329 330 gp = pp->geom; 331 cp = LIST_FIRST(&gp->consumer); 332 error = g_access(cp, dr, dw, de); 333 334 return (error); 335 } 336 337 static int 338 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 339 const char *gnopname, int ioerror, u_int count_until_fail, 340 u_int rfailprob, u_int wfailprob, u_int delaymsec, u_int rdelayprob, 341 u_int wdelayprob, off_t offset, off_t size, u_int secsize, off_t stripesize, 342 off_t stripeoffset, const char *physpath) 343 { 344 struct g_nop_softc *sc; 345 struct g_geom *gp; 346 struct g_provider *newpp; 347 struct g_consumer *cp; 348 struct g_geom_alias *gap; 349 char name[64]; 350 int error, n; 351 off_t explicitsize; 352 353 g_topology_assert(); 354 355 gp = NULL; 356 newpp = NULL; 357 cp = NULL; 358 359 if ((offset % pp->sectorsize) != 0) { 360 gctl_error(req, "Invalid offset for provider %s.", pp->name); 361 return (EINVAL); 362 } 363 if ((size % pp->sectorsize) != 0) { 364 gctl_error(req, "Invalid size for provider %s.", pp->name); 365 return (EINVAL); 366 } 367 if (offset >= pp->mediasize) { 368 gctl_error(req, "Invalid offset for provider %s.", pp->name); 369 return (EINVAL); 370 } 371 explicitsize = size; 372 if (size == 0) 373 size = pp->mediasize - offset; 374 if (offset + size > pp->mediasize) { 375 gctl_error(req, "Invalid size for provider %s.", pp->name); 376 return (EINVAL); 377 } 378 if (secsize == 0) 379 secsize = pp->sectorsize; 380 else if ((secsize % pp->sectorsize) != 0) { 381 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 382 return (EINVAL); 383 } 384 if (secsize > maxphys) { 385 gctl_error(req, "secsize is too big."); 386 return (EINVAL); 387 } 388 size -= size % secsize; 389 if ((stripesize % pp->sectorsize) != 0) { 390 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 391 return (EINVAL); 392 } 393 if ((stripeoffset % pp->sectorsize) != 0) { 394 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 395 return (EINVAL); 396 } 397 if (stripesize != 0 && stripeoffset >= stripesize) { 398 gctl_error(req, "stripeoffset is too big."); 399 return (EINVAL); 400 } 401 if (gnopname != NULL && !g_nop_verify_nprefix(gnopname)) { 402 gctl_error(req, "Name %s is invalid.", gnopname); 403 return (EINVAL); 404 } 405 406 if (gnopname != NULL) { 407 n = snprintf(name, sizeof(name), "%s%s", gnopname, 408 G_NOP_SUFFIX); 409 } else { 410 n = snprintf(name, sizeof(name), "%s%s", pp->name, 411 G_NOP_SUFFIX); 412 } 413 if (n <= 0 || n >= sizeof(name)) { 414 gctl_error(req, "Invalid provider name."); 415 return (EINVAL); 416 } 417 LIST_FOREACH(gp, &mp->geom, geom) { 418 if (strcmp(gp->name, name) == 0) { 419 gctl_error(req, "Provider %s already exists.", name); 420 return (EEXIST); 421 } 422 } 423 gp = g_new_geomf(mp, "%s", name); 424 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 425 sc->sc_offset = offset; 426 sc->sc_explicitsize = explicitsize; 427 sc->sc_stripesize = stripesize; 428 sc->sc_stripeoffset = stripeoffset; 429 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 430 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 431 } else 432 sc->sc_physpath = NULL; 433 sc->sc_error = ioerror; 434 sc->sc_count_until_fail = count_until_fail; 435 sc->sc_rfailprob = rfailprob; 436 sc->sc_wfailprob = wfailprob; 437 sc->sc_delaymsec = delaymsec; 438 sc->sc_rdelayprob = rdelayprob; 439 sc->sc_wdelayprob = wdelayprob; 440 sc->sc_reads = 0; 441 sc->sc_writes = 0; 442 sc->sc_deletes = 0; 443 sc->sc_getattrs = 0; 444 sc->sc_flushes = 0; 445 sc->sc_speedups = 0; 446 sc->sc_cmd0s = 0; 447 sc->sc_cmd1s = 0; 448 sc->sc_cmd2s = 0; 449 sc->sc_readbytes = 0; 450 sc->sc_wrotebytes = 0; 451 TAILQ_INIT(&sc->sc_head_delay); 452 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 453 gp->softc = sc; 454 455 newpp = g_new_providerf(gp, "%s", gp->name); 456 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 457 newpp->mediasize = size; 458 newpp->sectorsize = secsize; 459 newpp->stripesize = stripesize; 460 newpp->stripeoffset = stripeoffset; 461 LIST_FOREACH(gap, &pp->aliases, ga_next) 462 g_provider_add_alias(newpp, "%s%s", gap->ga_alias, G_NOP_SUFFIX); 463 464 cp = g_new_consumer(gp); 465 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 466 error = g_attach(cp, pp); 467 if (error != 0) { 468 gctl_error(req, "Cannot attach to provider %s.", pp->name); 469 goto fail; 470 } 471 472 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 473 g_error_provider(newpp, 0); 474 G_NOP_DEBUG(0, "Device %s created.", gp->name); 475 return (0); 476 fail: 477 if (cp->provider != NULL) 478 g_detach(cp); 479 g_destroy_consumer(cp); 480 g_destroy_provider(newpp); 481 mtx_destroy(&sc->sc_lock); 482 free(sc->sc_physpath, M_GEOM); 483 g_free(gp->softc); 484 g_destroy_geom(gp); 485 return (error); 486 } 487 488 static void 489 g_nop_providergone(struct g_provider *pp) 490 { 491 struct g_geom *gp = pp->geom; 492 struct g_nop_softc *sc = gp->softc; 493 494 KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), 495 ("delayed request list is not empty")); 496 497 gp->softc = NULL; 498 free(sc->sc_physpath, M_GEOM); 499 mtx_destroy(&sc->sc_lock); 500 g_free(sc); 501 } 502 503 static int 504 g_nop_destroy(struct g_geom *gp, boolean_t force) 505 { 506 struct g_nop_softc *sc; 507 struct g_provider *pp; 508 509 g_topology_assert(); 510 sc = gp->softc; 511 if (sc == NULL) 512 return (ENXIO); 513 pp = LIST_FIRST(&gp->provider); 514 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 515 if (force) { 516 G_NOP_DEBUG(0, "Device %s is still open, so it " 517 "can't be definitely removed.", pp->name); 518 } else { 519 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 520 pp->name, pp->acr, pp->acw, pp->ace); 521 return (EBUSY); 522 } 523 } else { 524 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 525 } 526 527 g_wither_geom(gp, ENXIO); 528 529 return (0); 530 } 531 532 static int 533 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 534 { 535 536 return (g_nop_destroy(gp, 0)); 537 } 538 539 static void 540 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 541 { 542 struct g_provider *pp; 543 intmax_t *val, error, rfailprob, wfailprob, count_until_fail, offset, 544 secsize, size, stripesize, stripeoffset, delaymsec, 545 rdelayprob, wdelayprob; 546 const char *physpath, *gnopname; 547 char param[16]; 548 int i, *nargs; 549 550 g_topology_assert(); 551 552 error = -1; 553 rfailprob = -1; 554 wfailprob = -1; 555 count_until_fail = -1; 556 offset = 0; 557 secsize = 0; 558 size = 0; 559 stripesize = 0; 560 stripeoffset = 0; 561 delaymsec = -1; 562 rdelayprob = -1; 563 wdelayprob = -1; 564 565 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 566 if (nargs == NULL) { 567 gctl_error(req, "No '%s' argument", "nargs"); 568 return; 569 } 570 if (*nargs <= 0) { 571 gctl_error(req, "Missing device(s)."); 572 return; 573 } 574 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 575 if (val != NULL) { 576 error = *val; 577 } 578 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 579 if (val != NULL) { 580 rfailprob = *val; 581 if (rfailprob < -1 || rfailprob > 100) { 582 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 583 return; 584 } 585 } 586 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 587 if (val != NULL) { 588 wfailprob = *val; 589 if (wfailprob < -1 || wfailprob > 100) { 590 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 591 return; 592 } 593 } 594 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 595 if (val != NULL) { 596 delaymsec = *val; 597 if (delaymsec < 1 && delaymsec != -1) { 598 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 599 return; 600 } 601 } 602 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 603 if (val != NULL) { 604 rdelayprob = *val; 605 if (rdelayprob < -1 || rdelayprob > 100) { 606 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 607 return; 608 } 609 } 610 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 611 if (val != NULL) { 612 wdelayprob = *val; 613 if (wdelayprob < -1 || wdelayprob > 100) { 614 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 615 return; 616 } 617 } 618 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 619 if (val != NULL) { 620 count_until_fail = *val; 621 if (count_until_fail < -1) { 622 gctl_error(req, "Invalid '%s' argument", 623 "count_until_fail"); 624 return; 625 } 626 } 627 val = gctl_get_paraml_opt(req, "offset", sizeof(*val)); 628 if (val != NULL) { 629 offset = *val; 630 if (offset < 0) { 631 gctl_error(req, "Invalid '%s' argument", "offset"); 632 return; 633 } 634 } 635 val = gctl_get_paraml_opt(req, "size", sizeof(*val)); 636 if (val != NULL) { 637 size = *val; 638 if (size < 0) { 639 gctl_error(req, "Invalid '%s' argument", "size"); 640 return; 641 } 642 } 643 val = gctl_get_paraml_opt(req, "secsize", sizeof(*val)); 644 if (val != NULL) { 645 secsize = *val; 646 if (secsize < 0) { 647 gctl_error(req, "Invalid '%s' argument", "secsize"); 648 return; 649 } 650 } 651 val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val)); 652 if (val != NULL) { 653 stripesize = *val; 654 if (stripesize < 0) { 655 gctl_error(req, "Invalid '%s' argument", "stripesize"); 656 return; 657 } 658 } 659 val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val)); 660 if (val != NULL) { 661 stripeoffset = *val; 662 if (stripeoffset < 0) { 663 gctl_error(req, "Invalid '%s' argument", 664 "stripeoffset"); 665 return; 666 } 667 } 668 physpath = gctl_get_asciiparam(req, "physpath"); 669 gnopname = gctl_get_asciiparam(req, "gnopname"); 670 671 for (i = 0; i < *nargs; i++) { 672 snprintf(param, sizeof(param), "arg%d", i); 673 pp = gctl_get_provider(req, param); 674 if (pp == NULL) 675 return; 676 if (g_nop_create(req, mp, pp, 677 gnopname, 678 error == -1 ? EIO : (int)error, 679 count_until_fail == -1 ? 0 : (u_int)count_until_fail, 680 rfailprob == -1 ? 0 : (u_int)rfailprob, 681 wfailprob == -1 ? 0 : (u_int)wfailprob, 682 delaymsec == -1 ? 1 : (u_int)delaymsec, 683 rdelayprob == -1 ? 0 : (u_int)rdelayprob, 684 wdelayprob == -1 ? 0 : (u_int)wdelayprob, 685 (off_t)offset, (off_t)size, (u_int)secsize, 686 (off_t)stripesize, (off_t)stripeoffset, 687 physpath) != 0) { 688 return; 689 } 690 } 691 } 692 693 static void 694 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 695 { 696 struct g_nop_softc *sc; 697 struct g_provider *pp; 698 intmax_t *val, delaymsec, error, rdelayprob, rfailprob, wdelayprob, 699 wfailprob, count_until_fail; 700 char param[16]; 701 int i, *nargs; 702 703 g_topology_assert(); 704 705 count_until_fail = -1; 706 delaymsec = -1; 707 error = -1; 708 rdelayprob = -1; 709 rfailprob = -1; 710 wdelayprob = -1; 711 wfailprob = -1; 712 713 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 714 if (nargs == NULL) { 715 gctl_error(req, "No '%s' argument", "nargs"); 716 return; 717 } 718 if (*nargs <= 0) { 719 gctl_error(req, "Missing device(s)."); 720 return; 721 } 722 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 723 if (val != NULL) { 724 error = *val; 725 } 726 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 727 if (val != NULL) { 728 count_until_fail = *val; 729 } 730 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 731 if (val != NULL) { 732 rfailprob = *val; 733 if (rfailprob < -1 || rfailprob > 100) { 734 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 735 return; 736 } 737 } 738 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 739 if (val != NULL) { 740 wfailprob = *val; 741 if (wfailprob < -1 || wfailprob > 100) { 742 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 743 return; 744 } 745 } 746 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 747 if (val != NULL) { 748 delaymsec = *val; 749 if (delaymsec < 1 && delaymsec != -1) { 750 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 751 return; 752 } 753 } 754 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 755 if (val != NULL) { 756 rdelayprob = *val; 757 if (rdelayprob < -1 || rdelayprob > 100) { 758 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 759 return; 760 } 761 } 762 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 763 if (val != NULL) { 764 wdelayprob = *val; 765 if (wdelayprob < -1 || wdelayprob > 100) { 766 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 767 return; 768 } 769 } 770 771 for (i = 0; i < *nargs; i++) { 772 snprintf(param, sizeof(param), "arg%d", i); 773 pp = gctl_get_provider(req, param); 774 if (pp == NULL) 775 return; 776 if (pp->geom->class != mp) { 777 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 778 gctl_error(req, "Provider %s is invalid.", pp->name); 779 return; 780 } 781 sc = pp->geom->softc; 782 if (error != -1) 783 sc->sc_error = (int)error; 784 if (rfailprob != -1) 785 sc->sc_rfailprob = (u_int)rfailprob; 786 if (wfailprob != -1) 787 sc->sc_wfailprob = (u_int)wfailprob; 788 if (rdelayprob != -1) 789 sc->sc_rdelayprob = (u_int)rdelayprob; 790 if (wdelayprob != -1) 791 sc->sc_wdelayprob = (u_int)wdelayprob; 792 if (delaymsec != -1) 793 sc->sc_delaymsec = (u_int)delaymsec; 794 if (count_until_fail != -1) 795 sc->sc_count_until_fail = (u_int)count_until_fail; 796 } 797 } 798 799 static struct g_geom * 800 g_nop_find_geom(struct g_class *mp, const char *name) 801 { 802 struct g_geom *gp; 803 804 LIST_FOREACH(gp, &mp->geom, geom) { 805 if (strcmp(gp->name, name) == 0) 806 return (gp); 807 } 808 return (NULL); 809 } 810 811 static void 812 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 813 { 814 int *nargs, *force, error, i; 815 struct g_geom *gp; 816 const char *name; 817 char param[16]; 818 819 g_topology_assert(); 820 821 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 822 if (nargs == NULL) { 823 gctl_error(req, "No '%s' argument", "nargs"); 824 return; 825 } 826 if (*nargs <= 0) { 827 gctl_error(req, "Missing device(s)."); 828 return; 829 } 830 force = gctl_get_paraml(req, "force", sizeof(*force)); 831 if (force == NULL) { 832 gctl_error(req, "No 'force' argument"); 833 return; 834 } 835 836 for (i = 0; i < *nargs; i++) { 837 snprintf(param, sizeof(param), "arg%d", i); 838 name = gctl_get_asciiparam(req, param); 839 if (name == NULL) { 840 gctl_error(req, "No 'arg%d' argument", i); 841 return; 842 } 843 if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0) 844 name += strlen(_PATH_DEV); 845 gp = g_nop_find_geom(mp, name); 846 if (gp == NULL) { 847 G_NOP_DEBUG(1, "Device %s is invalid.", name); 848 gctl_error(req, "Device %s is invalid.", name); 849 return; 850 } 851 error = g_nop_destroy(gp, *force); 852 if (error != 0) { 853 gctl_error(req, "Cannot destroy device %s (error=%d).", 854 gp->name, error); 855 return; 856 } 857 } 858 } 859 860 static void 861 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 862 { 863 struct g_nop_softc *sc; 864 struct g_provider *pp; 865 char param[16]; 866 int i, *nargs; 867 868 g_topology_assert(); 869 870 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 871 if (nargs == NULL) { 872 gctl_error(req, "No '%s' argument", "nargs"); 873 return; 874 } 875 if (*nargs <= 0) { 876 gctl_error(req, "Missing device(s)."); 877 return; 878 } 879 880 for (i = 0; i < *nargs; i++) { 881 snprintf(param, sizeof(param), "arg%d", i); 882 pp = gctl_get_provider(req, param); 883 if (pp == NULL) 884 return; 885 if (pp->geom->class != mp) { 886 G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); 887 gctl_error(req, "Provider %s is invalid.", pp->name); 888 return; 889 } 890 sc = pp->geom->softc; 891 sc->sc_reads = 0; 892 sc->sc_writes = 0; 893 sc->sc_deletes = 0; 894 sc->sc_getattrs = 0; 895 sc->sc_flushes = 0; 896 sc->sc_speedups = 0; 897 sc->sc_cmd0s = 0; 898 sc->sc_cmd1s = 0; 899 sc->sc_cmd2s = 0; 900 sc->sc_readbytes = 0; 901 sc->sc_wrotebytes = 0; 902 } 903 } 904 905 static void 906 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 907 { 908 uint32_t *version; 909 910 g_topology_assert(); 911 912 version = gctl_get_paraml(req, "version", sizeof(*version)); 913 if (version == NULL) { 914 gctl_error(req, "No '%s' argument.", "version"); 915 return; 916 } 917 if (*version != G_NOP_VERSION) { 918 gctl_error(req, "Userland and kernel parts are out of sync."); 919 return; 920 } 921 922 if (strcmp(verb, "create") == 0) { 923 g_nop_ctl_create(req, mp); 924 return; 925 } else if (strcmp(verb, "configure") == 0) { 926 g_nop_ctl_configure(req, mp); 927 return; 928 } else if (strcmp(verb, "destroy") == 0) { 929 g_nop_ctl_destroy(req, mp); 930 return; 931 } else if (strcmp(verb, "reset") == 0) { 932 g_nop_ctl_reset(req, mp); 933 return; 934 } 935 936 gctl_error(req, "Unknown verb."); 937 } 938 939 static void 940 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 941 struct g_consumer *cp, struct g_provider *pp) 942 { 943 struct g_nop_softc *sc; 944 945 if (pp != NULL || cp != NULL) 946 return; 947 sc = gp->softc; 948 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 949 (intmax_t)sc->sc_offset); 950 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 951 sc->sc_rfailprob); 952 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 953 sc->sc_wfailprob); 954 sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, 955 sc->sc_rdelayprob); 956 sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, 957 sc->sc_wdelayprob); 958 sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); 959 sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, 960 sc->sc_count_until_fail); 961 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 962 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 963 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 964 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 965 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 966 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 967 sbuf_printf(sb, "%s<Speedups>%ju</Speedups>\n", indent, sc->sc_speedups); 968 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 969 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 970 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 971 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 972 sc->sc_readbytes); 973 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 974 sc->sc_wrotebytes); 975 } 976 977 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 978 MODULE_VERSION(geom_nop, 0); 979