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 49 SYSCTL_DECL(_kern_geom); 50 static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 51 "GEOM_NOP stuff"); 52 static u_int g_nop_debug = 0; 53 SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, 54 "Debug level"); 55 56 static int g_nop_destroy(struct g_geom *gp, boolean_t force); 57 static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, 58 struct g_geom *gp); 59 static void g_nop_config(struct gctl_req *req, struct g_class *mp, 60 const char *verb); 61 static g_access_t g_nop_access; 62 static g_dumpconf_t g_nop_dumpconf; 63 static g_orphan_t g_nop_orphan; 64 static g_provgone_t g_nop_providergone; 65 static g_resize_t g_nop_resize; 66 static g_start_t g_nop_start; 67 68 struct g_class g_nop_class = { 69 .name = G_NOP_CLASS_NAME, 70 .version = G_VERSION, 71 .ctlreq = g_nop_config, 72 .destroy_geom = g_nop_destroy_geom, 73 .access = g_nop_access, 74 .dumpconf = g_nop_dumpconf, 75 .orphan = g_nop_orphan, 76 .providergone = g_nop_providergone, 77 .resize = g_nop_resize, 78 .start = g_nop_start, 79 }; 80 81 struct g_nop_delay { 82 struct callout dl_cal; 83 struct bio *dl_bio; 84 TAILQ_ENTRY(g_nop_delay) dl_next; 85 }; 86 87 static bool 88 g_nop_verify_nprefix(const char *name) 89 { 90 int i; 91 92 for (i = 0; i < strlen(name); i++) { 93 if (isalpha(name[i]) == 0 && isdigit(name[i]) == 0) { 94 return (false); 95 } 96 } 97 98 return (true); 99 } 100 101 static void 102 g_nop_orphan(struct g_consumer *cp) 103 { 104 105 g_topology_assert(); 106 g_nop_destroy(cp->geom, 1); 107 } 108 109 static void 110 g_nop_resize(struct g_consumer *cp) 111 { 112 struct g_nop_softc *sc; 113 struct g_geom *gp; 114 struct g_provider *pp; 115 off_t size; 116 117 g_topology_assert(); 118 119 gp = cp->geom; 120 sc = gp->softc; 121 122 if (sc->sc_explicitsize != 0) 123 return; 124 if (cp->provider->mediasize < sc->sc_offset) { 125 g_nop_destroy(gp, 1); 126 return; 127 } 128 size = cp->provider->mediasize - sc->sc_offset; 129 LIST_FOREACH(pp, &gp->provider, provider) 130 g_resize_provider(pp, size); 131 } 132 133 static int 134 g_nop_dumper(void *priv, void *virtual, vm_offset_t physical, off_t offset, 135 size_t length) 136 { 137 138 return (0); 139 } 140 141 static void 142 g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) 143 { 144 struct g_kerneldump *gkd; 145 struct g_geom *gp; 146 struct g_provider *pp; 147 148 gkd = (struct g_kerneldump *)bp->bio_data; 149 gp = bp->bio_to->geom; 150 g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, 151 (intmax_t)gkd->offset, (intmax_t)gkd->length); 152 153 pp = LIST_FIRST(&gp->provider); 154 155 gkd->di.dumper = g_nop_dumper; 156 gkd->di.priv = sc; 157 gkd->di.blocksize = pp->sectorsize; 158 gkd->di.maxiosize = DFLTPHYS; 159 gkd->di.mediaoffset = sc->sc_offset + gkd->offset; 160 if (gkd->offset > sc->sc_explicitsize) { 161 g_io_deliver(bp, ENODEV); 162 return; 163 } 164 if (gkd->offset + gkd->length > sc->sc_explicitsize) 165 gkd->length = sc->sc_explicitsize - gkd->offset; 166 gkd->di.mediasize = gkd->length; 167 g_io_deliver(bp, 0); 168 } 169 170 static void 171 g_nop_pass(struct bio *cbp, struct g_geom *gp) 172 { 173 174 G_NOP_LOGREQ(cbp, "Sending request."); 175 g_io_request(cbp, LIST_FIRST(&gp->consumer)); 176 } 177 178 static void 179 g_nop_pass_timeout(void *data) 180 { 181 struct g_nop_softc *sc; 182 struct g_geom *gp; 183 struct g_nop_delay *gndelay; 184 185 gndelay = (struct g_nop_delay *)data; 186 187 gp = gndelay->dl_bio->bio_to->geom; 188 sc = gp->softc; 189 190 mtx_lock(&sc->sc_lock); 191 TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); 192 mtx_unlock(&sc->sc_lock); 193 194 g_nop_pass(gndelay->dl_bio, gp); 195 196 g_free(data); 197 } 198 199 static void 200 g_nop_start(struct bio *bp) 201 { 202 struct g_nop_softc *sc; 203 struct g_geom *gp; 204 struct g_provider *pp; 205 struct bio *cbp; 206 u_int failprob, delayprob, delaytime; 207 208 failprob = delayprob = delaytime = 0; 209 210 gp = bp->bio_to->geom; 211 sc = gp->softc; 212 213 G_NOP_LOGREQ(bp, "Request received."); 214 mtx_lock(&sc->sc_lock); 215 switch (bp->bio_cmd) { 216 case BIO_READ: 217 sc->sc_reads++; 218 sc->sc_readbytes += bp->bio_length; 219 if (sc->sc_count_until_fail != 0) { 220 sc->sc_count_until_fail -= 1; 221 } else { 222 failprob = sc->sc_rfailprob; 223 delayprob = sc->sc_rdelayprob; 224 delaytime = sc->sc_delaymsec; 225 } 226 break; 227 case BIO_WRITE: 228 sc->sc_writes++; 229 sc->sc_wrotebytes += bp->bio_length; 230 if (sc->sc_count_until_fail != 0) { 231 sc->sc_count_until_fail -= 1; 232 } else { 233 failprob = sc->sc_wfailprob; 234 delayprob = sc->sc_wdelayprob; 235 delaytime = sc->sc_delaymsec; 236 } 237 break; 238 case BIO_DELETE: 239 sc->sc_deletes++; 240 break; 241 case BIO_GETATTR: 242 sc->sc_getattrs++; 243 if (sc->sc_physpath && 244 g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) 245 ; 246 else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) 247 g_nop_kerneldump(bp, sc); 248 else 249 /* 250 * Fallthrough to forwarding the GETATTR down to the 251 * lower level device. 252 */ 253 break; 254 mtx_unlock(&sc->sc_lock); 255 return; 256 case BIO_FLUSH: 257 sc->sc_flushes++; 258 break; 259 case BIO_SPEEDUP: 260 sc->sc_speedups++; 261 break; 262 case BIO_CMD0: 263 sc->sc_cmd0s++; 264 break; 265 case BIO_CMD1: 266 sc->sc_cmd1s++; 267 break; 268 case BIO_CMD2: 269 sc->sc_cmd2s++; 270 break; 271 } 272 mtx_unlock(&sc->sc_lock); 273 274 if (failprob > 0) { 275 u_int rval; 276 277 rval = arc4random() % 100; 278 if (rval < failprob) { 279 G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); 280 g_io_deliver(bp, sc->sc_error); 281 return; 282 } 283 } 284 285 cbp = g_clone_bio(bp); 286 if (cbp == NULL) { 287 g_io_deliver(bp, ENOMEM); 288 return; 289 } 290 cbp->bio_done = g_std_done; 291 cbp->bio_offset = bp->bio_offset + sc->sc_offset; 292 pp = LIST_FIRST(&gp->provider); 293 KASSERT(pp != NULL, ("NULL pp")); 294 cbp->bio_to = pp; 295 296 if (delayprob > 0) { 297 struct g_nop_delay *gndelay; 298 u_int rval; 299 300 rval = arc4random() % 100; 301 if (rval < delayprob) { 302 gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); 303 if (gndelay != NULL) { 304 callout_init(&gndelay->dl_cal, 1); 305 306 gndelay->dl_bio = cbp; 307 308 mtx_lock(&sc->sc_lock); 309 TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, 310 dl_next); 311 mtx_unlock(&sc->sc_lock); 312 313 callout_reset(&gndelay->dl_cal, 314 MSEC_2_TICKS(delaytime), g_nop_pass_timeout, 315 gndelay); 316 return; 317 } 318 } 319 } 320 321 g_nop_pass(cbp, gp); 322 } 323 324 static int 325 g_nop_access(struct g_provider *pp, int dr, int dw, int de) 326 { 327 struct g_geom *gp; 328 struct g_consumer *cp; 329 int error; 330 331 gp = pp->geom; 332 cp = LIST_FIRST(&gp->consumer); 333 error = g_access(cp, dr, dw, de); 334 335 return (error); 336 } 337 338 static int 339 g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, 340 const char *gnopname, int ioerror, u_int count_until_fail, 341 u_int rfailprob, u_int wfailprob, u_int delaymsec, u_int rdelayprob, 342 u_int wdelayprob, off_t offset, off_t size, u_int secsize, off_t stripesize, 343 off_t stripeoffset, const char *physpath) 344 { 345 struct g_nop_softc *sc; 346 struct g_geom *gp; 347 struct g_provider *newpp; 348 struct g_consumer *cp; 349 struct g_geom_alias *gap; 350 char name[64]; 351 int error, n; 352 off_t explicitsize; 353 354 g_topology_assert(); 355 356 gp = NULL; 357 newpp = NULL; 358 cp = NULL; 359 360 if ((offset % pp->sectorsize) != 0) { 361 gctl_error(req, "Invalid offset for provider %s.", pp->name); 362 return (EINVAL); 363 } 364 if ((size % pp->sectorsize) != 0) { 365 gctl_error(req, "Invalid size for provider %s.", pp->name); 366 return (EINVAL); 367 } 368 if (offset >= pp->mediasize) { 369 gctl_error(req, "Invalid offset for provider %s.", pp->name); 370 return (EINVAL); 371 } 372 explicitsize = size; 373 if (size == 0) 374 size = pp->mediasize - offset; 375 if (offset + size > pp->mediasize) { 376 gctl_error(req, "Invalid size for provider %s.", pp->name); 377 return (EINVAL); 378 } 379 if (secsize == 0) 380 secsize = pp->sectorsize; 381 else if ((secsize % pp->sectorsize) != 0) { 382 gctl_error(req, "Invalid secsize for provider %s.", pp->name); 383 return (EINVAL); 384 } 385 if (secsize > MAXPHYS) { 386 gctl_error(req, "secsize is too big."); 387 return (EINVAL); 388 } 389 size -= size % secsize; 390 if ((stripesize % pp->sectorsize) != 0) { 391 gctl_error(req, "Invalid stripesize for provider %s.", pp->name); 392 return (EINVAL); 393 } 394 if ((stripeoffset % pp->sectorsize) != 0) { 395 gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); 396 return (EINVAL); 397 } 398 if (stripesize != 0 && stripeoffset >= stripesize) { 399 gctl_error(req, "stripeoffset is too big."); 400 return (EINVAL); 401 } 402 if (gnopname != NULL && !g_nop_verify_nprefix(gnopname)) { 403 gctl_error(req, "Name %s is invalid.", gnopname); 404 return (EINVAL); 405 } 406 407 if (gnopname != NULL) { 408 n = snprintf(name, sizeof(name), "%s%s", gnopname, 409 G_NOP_SUFFIX); 410 } else { 411 n = snprintf(name, sizeof(name), "%s%s", pp->name, 412 G_NOP_SUFFIX); 413 } 414 if (n <= 0 || n >= sizeof(name)) { 415 gctl_error(req, "Invalid provider name."); 416 return (EINVAL); 417 } 418 LIST_FOREACH(gp, &mp->geom, geom) { 419 if (strcmp(gp->name, name) == 0) { 420 gctl_error(req, "Provider %s already exists.", name); 421 return (EEXIST); 422 } 423 } 424 gp = g_new_geomf(mp, "%s", name); 425 sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 426 sc->sc_offset = offset; 427 sc->sc_explicitsize = explicitsize; 428 sc->sc_stripesize = stripesize; 429 sc->sc_stripeoffset = stripeoffset; 430 if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { 431 sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); 432 } else 433 sc->sc_physpath = NULL; 434 sc->sc_error = ioerror; 435 sc->sc_count_until_fail = count_until_fail; 436 sc->sc_rfailprob = rfailprob; 437 sc->sc_wfailprob = wfailprob; 438 sc->sc_delaymsec = delaymsec; 439 sc->sc_rdelayprob = rdelayprob; 440 sc->sc_wdelayprob = wdelayprob; 441 sc->sc_reads = 0; 442 sc->sc_writes = 0; 443 sc->sc_deletes = 0; 444 sc->sc_getattrs = 0; 445 sc->sc_flushes = 0; 446 sc->sc_speedups = 0; 447 sc->sc_cmd0s = 0; 448 sc->sc_cmd1s = 0; 449 sc->sc_cmd2s = 0; 450 sc->sc_readbytes = 0; 451 sc->sc_wrotebytes = 0; 452 TAILQ_INIT(&sc->sc_head_delay); 453 mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); 454 gp->softc = sc; 455 456 newpp = g_new_providerf(gp, "%s", gp->name); 457 newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; 458 newpp->mediasize = size; 459 newpp->sectorsize = secsize; 460 newpp->stripesize = stripesize; 461 newpp->stripeoffset = stripeoffset; 462 LIST_FOREACH(gap, &pp->aliases, ga_next) 463 g_provider_add_alias(newpp, "%s%s", gap->ga_alias, G_NOP_SUFFIX); 464 465 cp = g_new_consumer(gp); 466 cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; 467 error = g_attach(cp, pp); 468 if (error != 0) { 469 gctl_error(req, "Cannot attach to provider %s.", pp->name); 470 goto fail; 471 } 472 473 newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; 474 g_error_provider(newpp, 0); 475 G_NOP_DEBUG(0, "Device %s created.", gp->name); 476 return (0); 477 fail: 478 if (cp->provider != NULL) 479 g_detach(cp); 480 g_destroy_consumer(cp); 481 g_destroy_provider(newpp); 482 mtx_destroy(&sc->sc_lock); 483 free(sc->sc_physpath, M_GEOM); 484 g_free(gp->softc); 485 g_destroy_geom(gp); 486 return (error); 487 } 488 489 static void 490 g_nop_providergone(struct g_provider *pp) 491 { 492 struct g_geom *gp = pp->geom; 493 struct g_nop_softc *sc = gp->softc; 494 495 KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), 496 ("delayed request list is not empty")); 497 498 gp->softc = NULL; 499 free(sc->sc_physpath, M_GEOM); 500 mtx_destroy(&sc->sc_lock); 501 g_free(sc); 502 } 503 504 static int 505 g_nop_destroy(struct g_geom *gp, boolean_t force) 506 { 507 struct g_nop_softc *sc; 508 struct g_provider *pp; 509 510 g_topology_assert(); 511 sc = gp->softc; 512 if (sc == NULL) 513 return (ENXIO); 514 pp = LIST_FIRST(&gp->provider); 515 if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 516 if (force) { 517 G_NOP_DEBUG(0, "Device %s is still open, so it " 518 "can't be definitely removed.", pp->name); 519 } else { 520 G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", 521 pp->name, pp->acr, pp->acw, pp->ace); 522 return (EBUSY); 523 } 524 } else { 525 G_NOP_DEBUG(0, "Device %s removed.", gp->name); 526 } 527 528 g_wither_geom(gp, ENXIO); 529 530 return (0); 531 } 532 533 static int 534 g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 535 { 536 537 return (g_nop_destroy(gp, 0)); 538 } 539 540 static void 541 g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) 542 { 543 struct g_provider *pp; 544 intmax_t *val, error, rfailprob, wfailprob, count_until_fail, offset, 545 secsize, size, stripesize, stripeoffset, delaymsec, 546 rdelayprob, wdelayprob; 547 const char *name, *physpath, *gnopname; 548 char param[16]; 549 int i, *nargs; 550 551 g_topology_assert(); 552 553 error = -1; 554 rfailprob = -1; 555 wfailprob = -1; 556 count_until_fail = -1; 557 offset = 0; 558 secsize = 0; 559 size = 0; 560 stripesize = 0; 561 stripeoffset = 0; 562 delaymsec = -1; 563 rdelayprob = -1; 564 wdelayprob = -1; 565 566 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 567 if (nargs == NULL) { 568 gctl_error(req, "No '%s' argument", "nargs"); 569 return; 570 } 571 if (*nargs <= 0) { 572 gctl_error(req, "Missing device(s)."); 573 return; 574 } 575 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 576 if (val != NULL) { 577 error = *val; 578 } 579 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 580 if (val != NULL) { 581 rfailprob = *val; 582 if (rfailprob < -1 || rfailprob > 100) { 583 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 584 return; 585 } 586 } 587 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 588 if (val != NULL) { 589 wfailprob = *val; 590 if (wfailprob < -1 || wfailprob > 100) { 591 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 592 return; 593 } 594 } 595 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 596 if (val != NULL) { 597 delaymsec = *val; 598 if (delaymsec < 1 && delaymsec != -1) { 599 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 600 return; 601 } 602 } 603 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 604 if (val != NULL) { 605 rdelayprob = *val; 606 if (rdelayprob < -1 || rdelayprob > 100) { 607 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 608 return; 609 } 610 } 611 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 612 if (val != NULL) { 613 wdelayprob = *val; 614 if (wdelayprob < -1 || wdelayprob > 100) { 615 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 616 return; 617 } 618 } 619 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 620 if (val != NULL) { 621 count_until_fail = *val; 622 if (count_until_fail < -1) { 623 gctl_error(req, "Invalid '%s' argument", 624 "count_until_fail"); 625 return; 626 } 627 } 628 val = gctl_get_paraml_opt(req, "offset", sizeof(*val)); 629 if (val != NULL) { 630 offset = *val; 631 if (offset < 0) { 632 gctl_error(req, "Invalid '%s' argument", "offset"); 633 return; 634 } 635 } 636 val = gctl_get_paraml_opt(req, "size", sizeof(*val)); 637 if (val != NULL) { 638 size = *val; 639 if (size < 0) { 640 gctl_error(req, "Invalid '%s' argument", "size"); 641 return; 642 } 643 } 644 val = gctl_get_paraml_opt(req, "secsize", sizeof(*val)); 645 if (val != NULL) { 646 secsize = *val; 647 if (secsize < 0) { 648 gctl_error(req, "Invalid '%s' argument", "secsize"); 649 return; 650 } 651 } 652 val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val)); 653 if (val != NULL) { 654 stripesize = *val; 655 if (stripesize < 0) { 656 gctl_error(req, "Invalid '%s' argument", "stripesize"); 657 return; 658 } 659 } 660 val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val)); 661 if (val != NULL) { 662 stripeoffset = *val; 663 if (stripeoffset < 0) { 664 gctl_error(req, "Invalid '%s' argument", 665 "stripeoffset"); 666 return; 667 } 668 } 669 physpath = gctl_get_asciiparam(req, "physpath"); 670 gnopname = gctl_get_asciiparam(req, "gnopname"); 671 672 for (i = 0; i < *nargs; i++) { 673 snprintf(param, sizeof(param), "arg%d", i); 674 name = gctl_get_asciiparam(req, param); 675 if (name == NULL) { 676 gctl_error(req, "No 'arg%d' argument", i); 677 return; 678 } 679 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 680 name += strlen("/dev/"); 681 pp = g_provider_by_name(name); 682 if (pp == NULL) { 683 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 684 gctl_error(req, "Provider %s is invalid.", name); 685 return; 686 } 687 if (g_nop_create(req, mp, pp, 688 gnopname, 689 error == -1 ? EIO : (int)error, 690 count_until_fail == -1 ? 0 : (u_int)count_until_fail, 691 rfailprob == -1 ? 0 : (u_int)rfailprob, 692 wfailprob == -1 ? 0 : (u_int)wfailprob, 693 delaymsec == -1 ? 1 : (u_int)delaymsec, 694 rdelayprob == -1 ? 0 : (u_int)rdelayprob, 695 wdelayprob == -1 ? 0 : (u_int)wdelayprob, 696 (off_t)offset, (off_t)size, (u_int)secsize, 697 (off_t)stripesize, (off_t)stripeoffset, 698 physpath) != 0) { 699 return; 700 } 701 } 702 } 703 704 static void 705 g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) 706 { 707 struct g_nop_softc *sc; 708 struct g_provider *pp; 709 intmax_t *val, delaymsec, error, rdelayprob, rfailprob, wdelayprob, 710 wfailprob, count_until_fail; 711 const char *name; 712 char param[16]; 713 int i, *nargs; 714 715 g_topology_assert(); 716 717 count_until_fail = -1; 718 delaymsec = -1; 719 error = -1; 720 rdelayprob = -1; 721 rfailprob = -1; 722 wdelayprob = -1; 723 wfailprob = -1; 724 725 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 726 if (nargs == NULL) { 727 gctl_error(req, "No '%s' argument", "nargs"); 728 return; 729 } 730 if (*nargs <= 0) { 731 gctl_error(req, "Missing device(s)."); 732 return; 733 } 734 val = gctl_get_paraml_opt(req, "error", sizeof(*val)); 735 if (val != NULL) { 736 error = *val; 737 } 738 val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); 739 if (val != NULL) { 740 count_until_fail = *val; 741 } 742 val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); 743 if (val != NULL) { 744 rfailprob = *val; 745 if (rfailprob < -1 || rfailprob > 100) { 746 gctl_error(req, "Invalid '%s' argument", "rfailprob"); 747 return; 748 } 749 } 750 val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); 751 if (val != NULL) { 752 wfailprob = *val; 753 if (wfailprob < -1 || wfailprob > 100) { 754 gctl_error(req, "Invalid '%s' argument", "wfailprob"); 755 return; 756 } 757 } 758 val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); 759 if (val != NULL) { 760 delaymsec = *val; 761 if (delaymsec < 1 && delaymsec != -1) { 762 gctl_error(req, "Invalid '%s' argument", "delaymsec"); 763 return; 764 } 765 } 766 val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); 767 if (val != NULL) { 768 rdelayprob = *val; 769 if (rdelayprob < -1 || rdelayprob > 100) { 770 gctl_error(req, "Invalid '%s' argument", "rdelayprob"); 771 return; 772 } 773 } 774 val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); 775 if (val != NULL) { 776 wdelayprob = *val; 777 if (wdelayprob < -1 || wdelayprob > 100) { 778 gctl_error(req, "Invalid '%s' argument", "wdelayprob"); 779 return; 780 } 781 } 782 783 for (i = 0; i < *nargs; i++) { 784 snprintf(param, sizeof(param), "arg%d", i); 785 name = gctl_get_asciiparam(req, param); 786 if (name == NULL) { 787 gctl_error(req, "No 'arg%d' argument", i); 788 return; 789 } 790 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 791 name += strlen("/dev/"); 792 pp = g_provider_by_name(name); 793 if (pp == NULL || pp->geom->class != mp) { 794 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 795 gctl_error(req, "Provider %s is invalid.", name); 796 return; 797 } 798 sc = pp->geom->softc; 799 if (error != -1) 800 sc->sc_error = (int)error; 801 if (rfailprob != -1) 802 sc->sc_rfailprob = (u_int)rfailprob; 803 if (wfailprob != -1) 804 sc->sc_wfailprob = (u_int)wfailprob; 805 if (rdelayprob != -1) 806 sc->sc_rdelayprob = (u_int)rdelayprob; 807 if (wdelayprob != -1) 808 sc->sc_wdelayprob = (u_int)wdelayprob; 809 if (delaymsec != -1) 810 sc->sc_delaymsec = (u_int)delaymsec; 811 if (count_until_fail != -1) 812 sc->sc_count_until_fail = (u_int)count_until_fail; 813 } 814 } 815 816 static struct g_geom * 817 g_nop_find_geom(struct g_class *mp, const char *name) 818 { 819 struct g_geom *gp; 820 821 LIST_FOREACH(gp, &mp->geom, geom) { 822 if (strcmp(gp->name, name) == 0) 823 return (gp); 824 } 825 return (NULL); 826 } 827 828 static void 829 g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) 830 { 831 int *nargs, *force, error, i; 832 struct g_geom *gp; 833 const char *name; 834 char param[16]; 835 836 g_topology_assert(); 837 838 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 839 if (nargs == NULL) { 840 gctl_error(req, "No '%s' argument", "nargs"); 841 return; 842 } 843 if (*nargs <= 0) { 844 gctl_error(req, "Missing device(s)."); 845 return; 846 } 847 force = gctl_get_paraml(req, "force", sizeof(*force)); 848 if (force == NULL) { 849 gctl_error(req, "No 'force' argument"); 850 return; 851 } 852 853 for (i = 0; i < *nargs; i++) { 854 snprintf(param, sizeof(param), "arg%d", i); 855 name = gctl_get_asciiparam(req, param); 856 if (name == NULL) { 857 gctl_error(req, "No 'arg%d' argument", i); 858 return; 859 } 860 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 861 name += strlen("/dev/"); 862 gp = g_nop_find_geom(mp, name); 863 if (gp == NULL) { 864 G_NOP_DEBUG(1, "Device %s is invalid.", name); 865 gctl_error(req, "Device %s is invalid.", name); 866 return; 867 } 868 error = g_nop_destroy(gp, *force); 869 if (error != 0) { 870 gctl_error(req, "Cannot destroy device %s (error=%d).", 871 gp->name, error); 872 return; 873 } 874 } 875 } 876 877 static void 878 g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) 879 { 880 struct g_nop_softc *sc; 881 struct g_provider *pp; 882 const char *name; 883 char param[16]; 884 int i, *nargs; 885 886 g_topology_assert(); 887 888 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 889 if (nargs == NULL) { 890 gctl_error(req, "No '%s' argument", "nargs"); 891 return; 892 } 893 if (*nargs <= 0) { 894 gctl_error(req, "Missing device(s)."); 895 return; 896 } 897 898 for (i = 0; i < *nargs; i++) { 899 snprintf(param, sizeof(param), "arg%d", i); 900 name = gctl_get_asciiparam(req, param); 901 if (name == NULL) { 902 gctl_error(req, "No 'arg%d' argument", i); 903 return; 904 } 905 if (strncmp(name, "/dev/", strlen("/dev/")) == 0) 906 name += strlen("/dev/"); 907 pp = g_provider_by_name(name); 908 if (pp == NULL || pp->geom->class != mp) { 909 G_NOP_DEBUG(1, "Provider %s is invalid.", name); 910 gctl_error(req, "Provider %s is invalid.", name); 911 return; 912 } 913 sc = pp->geom->softc; 914 sc->sc_reads = 0; 915 sc->sc_writes = 0; 916 sc->sc_deletes = 0; 917 sc->sc_getattrs = 0; 918 sc->sc_flushes = 0; 919 sc->sc_speedups = 0; 920 sc->sc_cmd0s = 0; 921 sc->sc_cmd1s = 0; 922 sc->sc_cmd2s = 0; 923 sc->sc_readbytes = 0; 924 sc->sc_wrotebytes = 0; 925 } 926 } 927 928 static void 929 g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) 930 { 931 uint32_t *version; 932 933 g_topology_assert(); 934 935 version = gctl_get_paraml(req, "version", sizeof(*version)); 936 if (version == NULL) { 937 gctl_error(req, "No '%s' argument.", "version"); 938 return; 939 } 940 if (*version != G_NOP_VERSION) { 941 gctl_error(req, "Userland and kernel parts are out of sync."); 942 return; 943 } 944 945 if (strcmp(verb, "create") == 0) { 946 g_nop_ctl_create(req, mp); 947 return; 948 } else if (strcmp(verb, "configure") == 0) { 949 g_nop_ctl_configure(req, mp); 950 return; 951 } else if (strcmp(verb, "destroy") == 0) { 952 g_nop_ctl_destroy(req, mp); 953 return; 954 } else if (strcmp(verb, "reset") == 0) { 955 g_nop_ctl_reset(req, mp); 956 return; 957 } 958 959 gctl_error(req, "Unknown verb."); 960 } 961 962 static void 963 g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 964 struct g_consumer *cp, struct g_provider *pp) 965 { 966 struct g_nop_softc *sc; 967 968 if (pp != NULL || cp != NULL) 969 return; 970 sc = gp->softc; 971 sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, 972 (intmax_t)sc->sc_offset); 973 sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, 974 sc->sc_rfailprob); 975 sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, 976 sc->sc_wfailprob); 977 sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, 978 sc->sc_rdelayprob); 979 sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, 980 sc->sc_wdelayprob); 981 sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); 982 sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, 983 sc->sc_count_until_fail); 984 sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); 985 sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); 986 sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); 987 sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); 988 sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); 989 sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); 990 sbuf_printf(sb, "%s<Speedups>%ju</Speedups>\n", indent, sc->sc_speedups); 991 sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); 992 sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); 993 sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); 994 sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, 995 sc->sc_readbytes); 996 sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, 997 sc->sc_wrotebytes); 998 } 999 1000 DECLARE_GEOM_CLASS(g_nop_class, g_nop); 1001 MODULE_VERSION(geom_nop, 0); 1002