1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 * 21 * $FreeBSD$ 22 * 23 */ 24 25 static int dtrace_verbose_ioctl; 26 SYSCTL_INT(_debug_dtrace, OID_AUTO, verbose_ioctl, CTLFLAG_RW, &dtrace_verbose_ioctl, 0, ""); 27 28 #define DTRACE_IOCTL_PRINTF(fmt, ...) if (dtrace_verbose_ioctl) printf(fmt, ## __VA_ARGS__ ) 29 30 /* ARGSUSED */ 31 static int 32 dtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 33 int flags __unused, struct thread *td) 34 { 35 dtrace_state_t *state = dev->si_drv1; 36 int error = 0; 37 if (state == NULL) 38 return (EINVAL); 39 40 if (state->dts_anon) { 41 ASSERT(dtrace_anon.dta_state == NULL); 42 state = state->dts_anon; 43 } 44 45 switch (cmd) { 46 case DTRACEIOC_AGGDESC: { 47 dtrace_aggdesc_t **paggdesc = (dtrace_aggdesc_t **) addr; 48 dtrace_aggdesc_t aggdesc; 49 dtrace_action_t *act; 50 dtrace_aggregation_t *agg; 51 int nrecs; 52 uint32_t offs; 53 dtrace_recdesc_t *lrec; 54 void *buf; 55 size_t size; 56 uintptr_t dest; 57 58 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_AGGDESC\n",__func__,__LINE__); 59 60 if (copyin((void *) *paggdesc, &aggdesc, sizeof (aggdesc)) != 0) 61 return (EFAULT); 62 63 mutex_enter(&dtrace_lock); 64 65 if ((agg = dtrace_aggid2agg(state, aggdesc.dtagd_id)) == NULL) { 66 mutex_exit(&dtrace_lock); 67 return (EINVAL); 68 } 69 70 aggdesc.dtagd_epid = agg->dtag_ecb->dte_epid; 71 72 nrecs = aggdesc.dtagd_nrecs; 73 aggdesc.dtagd_nrecs = 0; 74 75 offs = agg->dtag_base; 76 lrec = &agg->dtag_action.dta_rec; 77 aggdesc.dtagd_size = lrec->dtrd_offset + lrec->dtrd_size - offs; 78 79 for (act = agg->dtag_first; ; act = act->dta_next) { 80 ASSERT(act->dta_intuple || 81 DTRACEACT_ISAGG(act->dta_kind)); 82 83 /* 84 * If this action has a record size of zero, it 85 * denotes an argument to the aggregating action. 86 * Because the presence of this record doesn't (or 87 * shouldn't) affect the way the data is interpreted, 88 * we don't copy it out to save user-level the 89 * confusion of dealing with a zero-length record. 90 */ 91 if (act->dta_rec.dtrd_size == 0) { 92 ASSERT(agg->dtag_hasarg); 93 continue; 94 } 95 96 aggdesc.dtagd_nrecs++; 97 98 if (act == &agg->dtag_action) 99 break; 100 } 101 102 /* 103 * Now that we have the size, we need to allocate a temporary 104 * buffer in which to store the complete description. We need 105 * the temporary buffer to be able to drop dtrace_lock() 106 * across the copyout(), below. 107 */ 108 size = sizeof (dtrace_aggdesc_t) + 109 (aggdesc.dtagd_nrecs * sizeof (dtrace_recdesc_t)); 110 111 buf = kmem_alloc(size, KM_SLEEP); 112 dest = (uintptr_t)buf; 113 114 bcopy(&aggdesc, (void *)dest, sizeof (aggdesc)); 115 dest += offsetof(dtrace_aggdesc_t, dtagd_rec[0]); 116 117 for (act = agg->dtag_first; ; act = act->dta_next) { 118 dtrace_recdesc_t rec = act->dta_rec; 119 120 /* 121 * See the comment in the above loop for why we pass 122 * over zero-length records. 123 */ 124 if (rec.dtrd_size == 0) { 125 ASSERT(agg->dtag_hasarg); 126 continue; 127 } 128 129 if (nrecs-- == 0) 130 break; 131 132 rec.dtrd_offset -= offs; 133 bcopy(&rec, (void *)dest, sizeof (rec)); 134 dest += sizeof (dtrace_recdesc_t); 135 136 if (act == &agg->dtag_action) 137 break; 138 } 139 140 mutex_exit(&dtrace_lock); 141 142 if (copyout(buf, (void *) *paggdesc, dest - (uintptr_t)buf) != 0) { 143 kmem_free(buf, size); 144 return (EFAULT); 145 } 146 147 kmem_free(buf, size); 148 return (0); 149 } 150 case DTRACEIOC_AGGSNAP: 151 case DTRACEIOC_BUFSNAP: { 152 dtrace_bufdesc_t **pdesc = (dtrace_bufdesc_t **) addr; 153 dtrace_bufdesc_t desc; 154 caddr_t cached; 155 dtrace_buffer_t *buf; 156 157 dtrace_debug_output(); 158 159 if (copyin((void *) *pdesc, &desc, sizeof (desc)) != 0) 160 return (EFAULT); 161 162 DTRACE_IOCTL_PRINTF("%s(%d): %s curcpu %d cpu %d\n", 163 __func__,__LINE__, 164 cmd == DTRACEIOC_AGGSNAP ? 165 "DTRACEIOC_AGGSNAP":"DTRACEIOC_BUFSNAP", 166 curcpu, desc.dtbd_cpu); 167 168 if (desc.dtbd_cpu < 0 || desc.dtbd_cpu >= NCPU) 169 return (ENOENT); 170 if (pcpu_find(desc.dtbd_cpu) == NULL) 171 return (ENOENT); 172 173 mutex_enter(&dtrace_lock); 174 175 if (cmd == DTRACEIOC_BUFSNAP) { 176 buf = &state->dts_buffer[desc.dtbd_cpu]; 177 } else { 178 buf = &state->dts_aggbuffer[desc.dtbd_cpu]; 179 } 180 181 if (buf->dtb_flags & (DTRACEBUF_RING | DTRACEBUF_FILL)) { 182 size_t sz = buf->dtb_offset; 183 184 if (state->dts_activity != DTRACE_ACTIVITY_STOPPED) { 185 mutex_exit(&dtrace_lock); 186 return (EBUSY); 187 } 188 189 /* 190 * If this buffer has already been consumed, we're 191 * going to indicate that there's nothing left here 192 * to consume. 193 */ 194 if (buf->dtb_flags & DTRACEBUF_CONSUMED) { 195 mutex_exit(&dtrace_lock); 196 197 desc.dtbd_size = 0; 198 desc.dtbd_drops = 0; 199 desc.dtbd_errors = 0; 200 desc.dtbd_oldest = 0; 201 sz = sizeof (desc); 202 203 if (copyout(&desc, (void *) *pdesc, sz) != 0) 204 return (EFAULT); 205 206 return (0); 207 } 208 209 /* 210 * If this is a ring buffer that has wrapped, we want 211 * to copy the whole thing out. 212 */ 213 if (buf->dtb_flags & DTRACEBUF_WRAPPED) { 214 dtrace_buffer_polish(buf); 215 sz = buf->dtb_size; 216 } 217 218 if (copyout(buf->dtb_tomax, desc.dtbd_data, sz) != 0) { 219 mutex_exit(&dtrace_lock); 220 return (EFAULT); 221 } 222 223 desc.dtbd_size = sz; 224 desc.dtbd_drops = buf->dtb_drops; 225 desc.dtbd_errors = buf->dtb_errors; 226 desc.dtbd_oldest = buf->dtb_xamot_offset; 227 228 mutex_exit(&dtrace_lock); 229 230 if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 231 return (EFAULT); 232 233 buf->dtb_flags |= DTRACEBUF_CONSUMED; 234 235 return (0); 236 } 237 238 if (buf->dtb_tomax == NULL) { 239 ASSERT(buf->dtb_xamot == NULL); 240 mutex_exit(&dtrace_lock); 241 return (ENOENT); 242 } 243 244 cached = buf->dtb_tomax; 245 ASSERT(!(buf->dtb_flags & DTRACEBUF_NOSWITCH)); 246 247 dtrace_xcall(desc.dtbd_cpu, 248 (dtrace_xcall_t)dtrace_buffer_switch, buf); 249 250 state->dts_errors += buf->dtb_xamot_errors; 251 252 /* 253 * If the buffers did not actually switch, then the cross call 254 * did not take place -- presumably because the given CPU is 255 * not in the ready set. If this is the case, we'll return 256 * ENOENT. 257 */ 258 if (buf->dtb_tomax == cached) { 259 ASSERT(buf->dtb_xamot != cached); 260 mutex_exit(&dtrace_lock); 261 return (ENOENT); 262 } 263 264 ASSERT(cached == buf->dtb_xamot); 265 266 DTRACE_IOCTL_PRINTF("%s(%d): copyout the buffer snapshot\n",__func__,__LINE__); 267 268 /* 269 * We have our snapshot; now copy it out. 270 */ 271 if (copyout(buf->dtb_xamot, desc.dtbd_data, 272 buf->dtb_xamot_offset) != 0) { 273 mutex_exit(&dtrace_lock); 274 return (EFAULT); 275 } 276 277 desc.dtbd_size = buf->dtb_xamot_offset; 278 desc.dtbd_drops = buf->dtb_xamot_drops; 279 desc.dtbd_errors = buf->dtb_xamot_errors; 280 desc.dtbd_oldest = 0; 281 282 mutex_exit(&dtrace_lock); 283 284 DTRACE_IOCTL_PRINTF("%s(%d): copyout buffer desc: size %zd drops %lu errors %lu\n",__func__,__LINE__,(size_t) desc.dtbd_size,(u_long) desc.dtbd_drops,(u_long) desc.dtbd_errors); 285 286 /* 287 * Finally, copy out the buffer description. 288 */ 289 if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 290 return (EFAULT); 291 292 return (0); 293 } 294 case DTRACEIOC_CONF: { 295 dtrace_conf_t conf; 296 297 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_CONF\n",__func__,__LINE__); 298 299 bzero(&conf, sizeof (conf)); 300 conf.dtc_difversion = DIF_VERSION; 301 conf.dtc_difintregs = DIF_DIR_NREGS; 302 conf.dtc_diftupregs = DIF_DTR_NREGS; 303 conf.dtc_ctfmodel = CTF_MODEL_NATIVE; 304 305 *((dtrace_conf_t *) addr) = conf; 306 307 return (0); 308 } 309 case DTRACEIOC_DOFGET: { 310 dof_hdr_t **pdof = (dof_hdr_t **) addr; 311 dof_hdr_t hdr, *dof = *pdof; 312 int rval; 313 uint64_t len; 314 315 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_DOFGET\n",__func__,__LINE__); 316 317 if (copyin((void *)dof, &hdr, sizeof (hdr)) != 0) 318 return (EFAULT); 319 320 mutex_enter(&dtrace_lock); 321 dof = dtrace_dof_create(state); 322 mutex_exit(&dtrace_lock); 323 324 len = MIN(hdr.dofh_loadsz, dof->dofh_loadsz); 325 rval = copyout(dof, (void *) *pdof, len); 326 dtrace_dof_destroy(dof); 327 328 return (rval == 0 ? 0 : EFAULT); 329 } 330 case DTRACEIOC_ENABLE: { 331 dof_hdr_t *dof = NULL; 332 dtrace_enabling_t *enab = NULL; 333 dtrace_vstate_t *vstate; 334 int err = 0; 335 int rval; 336 dtrace_enable_io_t *p = (dtrace_enable_io_t *) addr; 337 338 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_ENABLE\n",__func__,__LINE__); 339 340 /* 341 * If a NULL argument has been passed, we take this as our 342 * cue to reevaluate our enablings. 343 */ 344 if (p->dof == NULL) { 345 dtrace_enabling_matchall(); 346 347 return (0); 348 } 349 350 if ((dof = dtrace_dof_copyin((uintptr_t) p->dof, &rval)) == NULL) 351 return (EINVAL); 352 353 mutex_enter(&cpu_lock); 354 mutex_enter(&dtrace_lock); 355 vstate = &state->dts_vstate; 356 357 if (state->dts_activity != DTRACE_ACTIVITY_INACTIVE) { 358 mutex_exit(&dtrace_lock); 359 mutex_exit(&cpu_lock); 360 dtrace_dof_destroy(dof); 361 return (EBUSY); 362 } 363 364 if (dtrace_dof_slurp(dof, vstate, td->td_ucred, &enab, 0, B_TRUE) != 0) { 365 mutex_exit(&dtrace_lock); 366 mutex_exit(&cpu_lock); 367 dtrace_dof_destroy(dof); 368 return (EINVAL); 369 } 370 371 if ((rval = dtrace_dof_options(dof, state)) != 0) { 372 dtrace_enabling_destroy(enab); 373 mutex_exit(&dtrace_lock); 374 mutex_exit(&cpu_lock); 375 dtrace_dof_destroy(dof); 376 return (rval); 377 } 378 379 if ((err = dtrace_enabling_match(enab, &p->n_matched)) == 0) { 380 err = dtrace_enabling_retain(enab); 381 } else { 382 dtrace_enabling_destroy(enab); 383 } 384 385 mutex_exit(&cpu_lock); 386 mutex_exit(&dtrace_lock); 387 dtrace_dof_destroy(dof); 388 389 return (err); 390 } 391 case DTRACEIOC_EPROBE: { 392 dtrace_eprobedesc_t **pepdesc = (dtrace_eprobedesc_t **) addr; 393 dtrace_eprobedesc_t epdesc; 394 dtrace_ecb_t *ecb; 395 dtrace_action_t *act; 396 void *buf; 397 size_t size; 398 uintptr_t dest; 399 int nrecs; 400 401 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_EPROBE\n",__func__,__LINE__); 402 403 if (copyin((void *)*pepdesc, &epdesc, sizeof (epdesc)) != 0) 404 return (EFAULT); 405 406 mutex_enter(&dtrace_lock); 407 408 if ((ecb = dtrace_epid2ecb(state, epdesc.dtepd_epid)) == NULL) { 409 mutex_exit(&dtrace_lock); 410 return (EINVAL); 411 } 412 413 if (ecb->dte_probe == NULL) { 414 mutex_exit(&dtrace_lock); 415 return (EINVAL); 416 } 417 418 epdesc.dtepd_probeid = ecb->dte_probe->dtpr_id; 419 epdesc.dtepd_uarg = ecb->dte_uarg; 420 epdesc.dtepd_size = ecb->dte_size; 421 422 nrecs = epdesc.dtepd_nrecs; 423 epdesc.dtepd_nrecs = 0; 424 for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 425 if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 426 continue; 427 428 epdesc.dtepd_nrecs++; 429 } 430 431 /* 432 * Now that we have the size, we need to allocate a temporary 433 * buffer in which to store the complete description. We need 434 * the temporary buffer to be able to drop dtrace_lock() 435 * across the copyout(), below. 436 */ 437 size = sizeof (dtrace_eprobedesc_t) + 438 (epdesc.dtepd_nrecs * sizeof (dtrace_recdesc_t)); 439 440 buf = kmem_alloc(size, KM_SLEEP); 441 dest = (uintptr_t)buf; 442 443 bcopy(&epdesc, (void *)dest, sizeof (epdesc)); 444 dest += offsetof(dtrace_eprobedesc_t, dtepd_rec[0]); 445 446 for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 447 if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 448 continue; 449 450 if (nrecs-- == 0) 451 break; 452 453 bcopy(&act->dta_rec, (void *)dest, 454 sizeof (dtrace_recdesc_t)); 455 dest += sizeof (dtrace_recdesc_t); 456 } 457 458 mutex_exit(&dtrace_lock); 459 460 if (copyout(buf, (void *) *pepdesc, dest - (uintptr_t)buf) != 0) { 461 kmem_free(buf, size); 462 return (EFAULT); 463 } 464 465 kmem_free(buf, size); 466 return (0); 467 } 468 case DTRACEIOC_FORMAT: { 469 dtrace_fmtdesc_t *fmt = (dtrace_fmtdesc_t *) addr; 470 char *str; 471 int len; 472 473 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_FORMAT\n",__func__,__LINE__); 474 475 mutex_enter(&dtrace_lock); 476 477 if (fmt->dtfd_format == 0 || 478 fmt->dtfd_format > state->dts_nformats) { 479 mutex_exit(&dtrace_lock); 480 return (EINVAL); 481 } 482 483 /* 484 * Format strings are allocated contiguously and they are 485 * never freed; if a format index is less than the number 486 * of formats, we can assert that the format map is non-NULL 487 * and that the format for the specified index is non-NULL. 488 */ 489 ASSERT(state->dts_formats != NULL); 490 str = state->dts_formats[fmt->dtfd_format - 1]; 491 ASSERT(str != NULL); 492 493 len = strlen(str) + 1; 494 495 if (len > fmt->dtfd_length) { 496 fmt->dtfd_length = len; 497 } else { 498 if (copyout(str, fmt->dtfd_string, len) != 0) { 499 mutex_exit(&dtrace_lock); 500 return (EINVAL); 501 } 502 } 503 504 mutex_exit(&dtrace_lock); 505 return (0); 506 } 507 case DTRACEIOC_GO: { 508 int rval; 509 processorid_t *cpuid = (processorid_t *) addr; 510 511 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_GO\n",__func__,__LINE__); 512 513 rval = dtrace_state_go(state, cpuid); 514 515 return (rval); 516 } 517 case DTRACEIOC_PROBEARG: { 518 dtrace_argdesc_t *desc = (dtrace_argdesc_t *) addr; 519 dtrace_probe_t *probe; 520 dtrace_provider_t *prov; 521 522 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROBEARG\n",__func__,__LINE__); 523 524 if (desc->dtargd_id == DTRACE_IDNONE) 525 return (EINVAL); 526 527 if (desc->dtargd_ndx == DTRACE_ARGNONE) 528 return (EINVAL); 529 530 mutex_enter(&dtrace_provider_lock); 531 mutex_enter(&mod_lock); 532 mutex_enter(&dtrace_lock); 533 534 if (desc->dtargd_id > dtrace_nprobes) { 535 mutex_exit(&dtrace_lock); 536 mutex_exit(&mod_lock); 537 mutex_exit(&dtrace_provider_lock); 538 return (EINVAL); 539 } 540 541 if ((probe = dtrace_probes[desc->dtargd_id - 1]) == NULL) { 542 mutex_exit(&dtrace_lock); 543 mutex_exit(&mod_lock); 544 mutex_exit(&dtrace_provider_lock); 545 return (EINVAL); 546 } 547 548 mutex_exit(&dtrace_lock); 549 550 prov = probe->dtpr_provider; 551 552 if (prov->dtpv_pops.dtps_getargdesc == NULL) { 553 /* 554 * There isn't any typed information for this probe. 555 * Set the argument number to DTRACE_ARGNONE. 556 */ 557 desc->dtargd_ndx = DTRACE_ARGNONE; 558 } else { 559 desc->dtargd_native[0] = '\0'; 560 desc->dtargd_xlate[0] = '\0'; 561 desc->dtargd_mapping = desc->dtargd_ndx; 562 563 prov->dtpv_pops.dtps_getargdesc(prov->dtpv_arg, 564 probe->dtpr_id, probe->dtpr_arg, desc); 565 } 566 567 mutex_exit(&mod_lock); 568 mutex_exit(&dtrace_provider_lock); 569 570 return (0); 571 } 572 case DTRACEIOC_PROBEMATCH: 573 case DTRACEIOC_PROBES: { 574 dtrace_probedesc_t *p_desc = (dtrace_probedesc_t *) addr; 575 dtrace_probe_t *probe = NULL; 576 dtrace_probekey_t pkey; 577 dtrace_id_t i; 578 int m = 0; 579 uint32_t priv = 0; 580 uid_t uid = 0; 581 zoneid_t zoneid = 0; 582 583 DTRACE_IOCTL_PRINTF("%s(%d): %s\n",__func__,__LINE__, 584 cmd == DTRACEIOC_PROBEMATCH ? 585 "DTRACEIOC_PROBEMATCH":"DTRACEIOC_PROBES"); 586 587 p_desc->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 588 p_desc->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 589 p_desc->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 590 p_desc->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 591 592 /* 593 * Before we attempt to match this probe, we want to give 594 * all providers the opportunity to provide it. 595 */ 596 if (p_desc->dtpd_id == DTRACE_IDNONE) { 597 mutex_enter(&dtrace_provider_lock); 598 dtrace_probe_provide(p_desc, NULL); 599 mutex_exit(&dtrace_provider_lock); 600 p_desc->dtpd_id++; 601 } 602 603 if (cmd == DTRACEIOC_PROBEMATCH) { 604 dtrace_probekey(p_desc, &pkey); 605 pkey.dtpk_id = DTRACE_IDNONE; 606 } 607 608 dtrace_cred2priv(td->td_ucred, &priv, &uid, &zoneid); 609 610 mutex_enter(&dtrace_lock); 611 612 if (cmd == DTRACEIOC_PROBEMATCH) { 613 for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 614 if ((probe = dtrace_probes[i - 1]) != NULL && 615 (m = dtrace_match_probe(probe, &pkey, 616 priv, uid, zoneid)) != 0) 617 break; 618 } 619 620 if (m < 0) { 621 mutex_exit(&dtrace_lock); 622 return (EINVAL); 623 } 624 625 } else { 626 for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 627 if ((probe = dtrace_probes[i - 1]) != NULL && 628 dtrace_match_priv(probe, priv, uid, zoneid)) 629 break; 630 } 631 } 632 633 if (probe == NULL) { 634 mutex_exit(&dtrace_lock); 635 return (ESRCH); 636 } 637 638 dtrace_probe_description(probe, p_desc); 639 mutex_exit(&dtrace_lock); 640 641 return (0); 642 } 643 case DTRACEIOC_PROVIDER: { 644 dtrace_providerdesc_t *pvd = (dtrace_providerdesc_t *) addr; 645 dtrace_provider_t *pvp; 646 647 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROVIDER\n",__func__,__LINE__); 648 649 pvd->dtvd_name[DTRACE_PROVNAMELEN - 1] = '\0'; 650 mutex_enter(&dtrace_provider_lock); 651 652 for (pvp = dtrace_provider; pvp != NULL; pvp = pvp->dtpv_next) { 653 if (strcmp(pvp->dtpv_name, pvd->dtvd_name) == 0) 654 break; 655 } 656 657 mutex_exit(&dtrace_provider_lock); 658 659 if (pvp == NULL) 660 return (ESRCH); 661 662 bcopy(&pvp->dtpv_priv, &pvd->dtvd_priv, sizeof (dtrace_ppriv_t)); 663 bcopy(&pvp->dtpv_attr, &pvd->dtvd_attr, sizeof (dtrace_pattr_t)); 664 665 return (0); 666 } 667 case DTRACEIOC_REPLICATE: { 668 dtrace_repldesc_t *desc = (dtrace_repldesc_t *) addr; 669 dtrace_probedesc_t *match = &desc->dtrpd_match; 670 dtrace_probedesc_t *create = &desc->dtrpd_create; 671 int err; 672 673 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_REPLICATE\n",__func__,__LINE__); 674 675 match->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 676 match->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 677 match->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 678 match->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 679 680 create->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 681 create->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 682 create->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 683 create->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 684 685 mutex_enter(&dtrace_lock); 686 err = dtrace_enabling_replicate(state, match, create); 687 mutex_exit(&dtrace_lock); 688 689 return (err); 690 } 691 case DTRACEIOC_STATUS: { 692 dtrace_status_t *stat = (dtrace_status_t *) addr; 693 dtrace_dstate_t *dstate; 694 int i, j; 695 uint64_t nerrs; 696 697 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STATUS\n",__func__,__LINE__); 698 699 /* 700 * See the comment in dtrace_state_deadman() for the reason 701 * for setting dts_laststatus to INT64_MAX before setting 702 * it to the correct value. 703 */ 704 state->dts_laststatus = INT64_MAX; 705 dtrace_membar_producer(); 706 state->dts_laststatus = dtrace_gethrtime(); 707 708 bzero(stat, sizeof (*stat)); 709 710 mutex_enter(&dtrace_lock); 711 712 if (state->dts_activity == DTRACE_ACTIVITY_INACTIVE) { 713 mutex_exit(&dtrace_lock); 714 return (ENOENT); 715 } 716 717 if (state->dts_activity == DTRACE_ACTIVITY_DRAINING) 718 stat->dtst_exiting = 1; 719 720 nerrs = state->dts_errors; 721 dstate = &state->dts_vstate.dtvs_dynvars; 722 723 for (i = 0; i < NCPU; i++) { 724 #if !defined(sun) 725 if (pcpu_find(i) == NULL) 726 continue; 727 #endif 728 dtrace_dstate_percpu_t *dcpu = &dstate->dtds_percpu[i]; 729 730 stat->dtst_dyndrops += dcpu->dtdsc_drops; 731 stat->dtst_dyndrops_dirty += dcpu->dtdsc_dirty_drops; 732 stat->dtst_dyndrops_rinsing += dcpu->dtdsc_rinsing_drops; 733 734 if (state->dts_buffer[i].dtb_flags & DTRACEBUF_FULL) 735 stat->dtst_filled++; 736 737 nerrs += state->dts_buffer[i].dtb_errors; 738 739 for (j = 0; j < state->dts_nspeculations; j++) { 740 dtrace_speculation_t *spec; 741 dtrace_buffer_t *buf; 742 743 spec = &state->dts_speculations[j]; 744 buf = &spec->dtsp_buffer[i]; 745 stat->dtst_specdrops += buf->dtb_xamot_drops; 746 } 747 } 748 749 stat->dtst_specdrops_busy = state->dts_speculations_busy; 750 stat->dtst_specdrops_unavail = state->dts_speculations_unavail; 751 stat->dtst_stkstroverflows = state->dts_stkstroverflows; 752 stat->dtst_dblerrors = state->dts_dblerrors; 753 stat->dtst_killed = 754 (state->dts_activity == DTRACE_ACTIVITY_KILLED); 755 stat->dtst_errors = nerrs; 756 757 mutex_exit(&dtrace_lock); 758 759 return (0); 760 } 761 case DTRACEIOC_STOP: { 762 int rval; 763 processorid_t *cpuid = (processorid_t *) addr; 764 765 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STOP\n",__func__,__LINE__); 766 767 mutex_enter(&dtrace_lock); 768 rval = dtrace_state_stop(state, cpuid); 769 mutex_exit(&dtrace_lock); 770 771 return (rval); 772 } 773 default: 774 error = ENOTTY; 775 } 776 return (error); 777 } 778