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 static int 31 dtrace_ioctl_helper(struct cdev *dev, u_long cmd, caddr_t addr, int flags, 32 struct thread *td) 33 { 34 int rval; 35 dof_helper_t *dhp = NULL; 36 dof_hdr_t *dof = NULL; 37 38 switch (cmd) { 39 case DTRACEHIOC_ADDDOF: 40 dhp = (dof_helper_t *)addr; 41 /* XXX all because dofhp_dof is 64 bit */ 42 addr = (caddr_t)(vm_offset_t)dhp->dofhp_dof; 43 /* FALLTHROUGH */ 44 case DTRACEHIOC_ADD: 45 dof = dtrace_dof_copyin((intptr_t)addr, &rval); 46 47 if (dof == NULL) 48 return (rval); 49 50 mutex_enter(&dtrace_lock); 51 if ((rval = dtrace_helper_slurp((dof_hdr_t *)dof, dhp)) != -1) { 52 if (dhp) { 53 dhp->gen = rval; 54 copyout(dhp, addr, sizeof(*dhp)); 55 } 56 rval = 0; 57 } else { 58 rval = EINVAL; 59 } 60 mutex_exit(&dtrace_lock); 61 return (rval); 62 case DTRACEHIOC_REMOVE: 63 mutex_enter(&dtrace_lock); 64 rval = dtrace_helper_destroygen((int)*addr); 65 mutex_exit(&dtrace_lock); 66 67 return (rval); 68 default: 69 break; 70 } 71 72 return (ENOTTY); 73 } 74 75 /* ARGSUSED */ 76 static int 77 dtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 78 int flags __unused, struct thread *td) 79 { 80 #if __FreeBSD_version < 800039 81 dtrace_state_t *state = dev->si_drv1; 82 #else 83 dtrace_state_t *state; 84 devfs_get_cdevpriv((void **) &state); 85 #endif 86 int error = 0; 87 if (state == NULL) 88 return (EINVAL); 89 90 if (state->dts_anon) { 91 ASSERT(dtrace_anon.dta_state == NULL); 92 state = state->dts_anon; 93 } 94 95 switch (cmd) { 96 case DTRACEIOC_AGGDESC: { 97 dtrace_aggdesc_t **paggdesc = (dtrace_aggdesc_t **) addr; 98 dtrace_aggdesc_t aggdesc; 99 dtrace_action_t *act; 100 dtrace_aggregation_t *agg; 101 int nrecs; 102 uint32_t offs; 103 dtrace_recdesc_t *lrec; 104 void *buf; 105 size_t size; 106 uintptr_t dest; 107 108 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_AGGDESC\n",__func__,__LINE__); 109 110 if (copyin((void *) *paggdesc, &aggdesc, sizeof (aggdesc)) != 0) 111 return (EFAULT); 112 113 mutex_enter(&dtrace_lock); 114 115 if ((agg = dtrace_aggid2agg(state, aggdesc.dtagd_id)) == NULL) { 116 mutex_exit(&dtrace_lock); 117 return (EINVAL); 118 } 119 120 aggdesc.dtagd_epid = agg->dtag_ecb->dte_epid; 121 122 nrecs = aggdesc.dtagd_nrecs; 123 aggdesc.dtagd_nrecs = 0; 124 125 offs = agg->dtag_base; 126 lrec = &agg->dtag_action.dta_rec; 127 aggdesc.dtagd_size = lrec->dtrd_offset + lrec->dtrd_size - offs; 128 129 for (act = agg->dtag_first; ; act = act->dta_next) { 130 ASSERT(act->dta_intuple || 131 DTRACEACT_ISAGG(act->dta_kind)); 132 133 /* 134 * If this action has a record size of zero, it 135 * denotes an argument to the aggregating action. 136 * Because the presence of this record doesn't (or 137 * shouldn't) affect the way the data is interpreted, 138 * we don't copy it out to save user-level the 139 * confusion of dealing with a zero-length record. 140 */ 141 if (act->dta_rec.dtrd_size == 0) { 142 ASSERT(agg->dtag_hasarg); 143 continue; 144 } 145 146 aggdesc.dtagd_nrecs++; 147 148 if (act == &agg->dtag_action) 149 break; 150 } 151 152 /* 153 * Now that we have the size, we need to allocate a temporary 154 * buffer in which to store the complete description. We need 155 * the temporary buffer to be able to drop dtrace_lock() 156 * across the copyout(), below. 157 */ 158 size = sizeof (dtrace_aggdesc_t) + 159 (aggdesc.dtagd_nrecs * sizeof (dtrace_recdesc_t)); 160 161 buf = kmem_alloc(size, KM_SLEEP); 162 dest = (uintptr_t)buf; 163 164 bcopy(&aggdesc, (void *)dest, sizeof (aggdesc)); 165 dest += offsetof(dtrace_aggdesc_t, dtagd_rec[0]); 166 167 for (act = agg->dtag_first; ; act = act->dta_next) { 168 dtrace_recdesc_t rec = act->dta_rec; 169 170 /* 171 * See the comment in the above loop for why we pass 172 * over zero-length records. 173 */ 174 if (rec.dtrd_size == 0) { 175 ASSERT(agg->dtag_hasarg); 176 continue; 177 } 178 179 if (nrecs-- == 0) 180 break; 181 182 rec.dtrd_offset -= offs; 183 bcopy(&rec, (void *)dest, sizeof (rec)); 184 dest += sizeof (dtrace_recdesc_t); 185 186 if (act == &agg->dtag_action) 187 break; 188 } 189 190 mutex_exit(&dtrace_lock); 191 192 if (copyout(buf, (void *) *paggdesc, dest - (uintptr_t)buf) != 0) { 193 kmem_free(buf, size); 194 return (EFAULT); 195 } 196 197 kmem_free(buf, size); 198 return (0); 199 } 200 case DTRACEIOC_AGGSNAP: 201 case DTRACEIOC_BUFSNAP: { 202 dtrace_bufdesc_t **pdesc = (dtrace_bufdesc_t **) addr; 203 dtrace_bufdesc_t desc; 204 caddr_t cached; 205 dtrace_buffer_t *buf; 206 207 dtrace_debug_output(); 208 209 if (copyin((void *) *pdesc, &desc, sizeof (desc)) != 0) 210 return (EFAULT); 211 212 DTRACE_IOCTL_PRINTF("%s(%d): %s curcpu %d cpu %d\n", 213 __func__,__LINE__, 214 cmd == DTRACEIOC_AGGSNAP ? 215 "DTRACEIOC_AGGSNAP":"DTRACEIOC_BUFSNAP", 216 curcpu, desc.dtbd_cpu); 217 218 if (desc.dtbd_cpu >= NCPU) 219 return (ENOENT); 220 if (pcpu_find(desc.dtbd_cpu) == NULL) 221 return (ENOENT); 222 223 mutex_enter(&dtrace_lock); 224 225 if (cmd == DTRACEIOC_BUFSNAP) { 226 buf = &state->dts_buffer[desc.dtbd_cpu]; 227 } else { 228 buf = &state->dts_aggbuffer[desc.dtbd_cpu]; 229 } 230 231 if (buf->dtb_flags & (DTRACEBUF_RING | DTRACEBUF_FILL)) { 232 size_t sz = buf->dtb_offset; 233 234 if (state->dts_activity != DTRACE_ACTIVITY_STOPPED) { 235 mutex_exit(&dtrace_lock); 236 return (EBUSY); 237 } 238 239 /* 240 * If this buffer has already been consumed, we're 241 * going to indicate that there's nothing left here 242 * to consume. 243 */ 244 if (buf->dtb_flags & DTRACEBUF_CONSUMED) { 245 mutex_exit(&dtrace_lock); 246 247 desc.dtbd_size = 0; 248 desc.dtbd_drops = 0; 249 desc.dtbd_errors = 0; 250 desc.dtbd_oldest = 0; 251 sz = sizeof (desc); 252 253 if (copyout(&desc, (void *) *pdesc, sz) != 0) 254 return (EFAULT); 255 256 return (0); 257 } 258 259 /* 260 * If this is a ring buffer that has wrapped, we want 261 * to copy the whole thing out. 262 */ 263 if (buf->dtb_flags & DTRACEBUF_WRAPPED) { 264 dtrace_buffer_polish(buf); 265 sz = buf->dtb_size; 266 } 267 268 if (copyout(buf->dtb_tomax, desc.dtbd_data, sz) != 0) { 269 mutex_exit(&dtrace_lock); 270 return (EFAULT); 271 } 272 273 desc.dtbd_size = sz; 274 desc.dtbd_drops = buf->dtb_drops; 275 desc.dtbd_errors = buf->dtb_errors; 276 desc.dtbd_oldest = buf->dtb_xamot_offset; 277 278 mutex_exit(&dtrace_lock); 279 280 if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 281 return (EFAULT); 282 283 buf->dtb_flags |= DTRACEBUF_CONSUMED; 284 285 return (0); 286 } 287 288 if (buf->dtb_tomax == NULL) { 289 ASSERT(buf->dtb_xamot == NULL); 290 mutex_exit(&dtrace_lock); 291 return (ENOENT); 292 } 293 294 cached = buf->dtb_tomax; 295 ASSERT(!(buf->dtb_flags & DTRACEBUF_NOSWITCH)); 296 297 dtrace_xcall(desc.dtbd_cpu, 298 (dtrace_xcall_t)dtrace_buffer_switch, buf); 299 300 state->dts_errors += buf->dtb_xamot_errors; 301 302 /* 303 * If the buffers did not actually switch, then the cross call 304 * did not take place -- presumably because the given CPU is 305 * not in the ready set. If this is the case, we'll return 306 * ENOENT. 307 */ 308 if (buf->dtb_tomax == cached) { 309 ASSERT(buf->dtb_xamot != cached); 310 mutex_exit(&dtrace_lock); 311 return (ENOENT); 312 } 313 314 ASSERT(cached == buf->dtb_xamot); 315 316 DTRACE_IOCTL_PRINTF("%s(%d): copyout the buffer snapshot\n",__func__,__LINE__); 317 318 /* 319 * We have our snapshot; now copy it out. 320 */ 321 if (copyout(buf->dtb_xamot, desc.dtbd_data, 322 buf->dtb_xamot_offset) != 0) { 323 mutex_exit(&dtrace_lock); 324 return (EFAULT); 325 } 326 327 desc.dtbd_size = buf->dtb_xamot_offset; 328 desc.dtbd_drops = buf->dtb_xamot_drops; 329 desc.dtbd_errors = buf->dtb_xamot_errors; 330 desc.dtbd_oldest = 0; 331 332 mutex_exit(&dtrace_lock); 333 334 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); 335 336 /* 337 * Finally, copy out the buffer description. 338 */ 339 if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 340 return (EFAULT); 341 342 return (0); 343 } 344 case DTRACEIOC_CONF: { 345 dtrace_conf_t conf; 346 347 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_CONF\n",__func__,__LINE__); 348 349 bzero(&conf, sizeof (conf)); 350 conf.dtc_difversion = DIF_VERSION; 351 conf.dtc_difintregs = DIF_DIR_NREGS; 352 conf.dtc_diftupregs = DIF_DTR_NREGS; 353 conf.dtc_ctfmodel = CTF_MODEL_NATIVE; 354 355 *((dtrace_conf_t *) addr) = conf; 356 357 return (0); 358 } 359 case DTRACEIOC_DOFGET: { 360 dof_hdr_t **pdof = (dof_hdr_t **) addr; 361 dof_hdr_t hdr, *dof = *pdof; 362 int rval; 363 uint64_t len; 364 365 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_DOFGET\n",__func__,__LINE__); 366 367 if (copyin((void *)dof, &hdr, sizeof (hdr)) != 0) 368 return (EFAULT); 369 370 mutex_enter(&dtrace_lock); 371 dof = dtrace_dof_create(state); 372 mutex_exit(&dtrace_lock); 373 374 len = MIN(hdr.dofh_loadsz, dof->dofh_loadsz); 375 rval = copyout(dof, (void *) *pdof, len); 376 dtrace_dof_destroy(dof); 377 378 return (rval == 0 ? 0 : EFAULT); 379 } 380 case DTRACEIOC_ENABLE: { 381 dof_hdr_t *dof = NULL; 382 dtrace_enabling_t *enab = NULL; 383 dtrace_vstate_t *vstate; 384 int err = 0; 385 int rval; 386 dtrace_enable_io_t *p = (dtrace_enable_io_t *) addr; 387 388 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_ENABLE\n",__func__,__LINE__); 389 390 /* 391 * If a NULL argument has been passed, we take this as our 392 * cue to reevaluate our enablings. 393 */ 394 if (p->dof == NULL) { 395 dtrace_enabling_matchall(); 396 397 return (0); 398 } 399 400 if ((dof = dtrace_dof_copyin((uintptr_t) p->dof, &rval)) == NULL) 401 return (EINVAL); 402 403 mutex_enter(&cpu_lock); 404 mutex_enter(&dtrace_lock); 405 vstate = &state->dts_vstate; 406 407 if (state->dts_activity != DTRACE_ACTIVITY_INACTIVE) { 408 mutex_exit(&dtrace_lock); 409 mutex_exit(&cpu_lock); 410 dtrace_dof_destroy(dof); 411 return (EBUSY); 412 } 413 414 if (dtrace_dof_slurp(dof, vstate, td->td_ucred, &enab, 0, B_TRUE) != 0) { 415 mutex_exit(&dtrace_lock); 416 mutex_exit(&cpu_lock); 417 dtrace_dof_destroy(dof); 418 return (EINVAL); 419 } 420 421 if ((rval = dtrace_dof_options(dof, state)) != 0) { 422 dtrace_enabling_destroy(enab); 423 mutex_exit(&dtrace_lock); 424 mutex_exit(&cpu_lock); 425 dtrace_dof_destroy(dof); 426 return (rval); 427 } 428 429 if ((err = dtrace_enabling_match(enab, &p->n_matched)) == 0) { 430 err = dtrace_enabling_retain(enab); 431 } else { 432 dtrace_enabling_destroy(enab); 433 } 434 435 mutex_exit(&cpu_lock); 436 mutex_exit(&dtrace_lock); 437 dtrace_dof_destroy(dof); 438 439 return (err); 440 } 441 case DTRACEIOC_EPROBE: { 442 dtrace_eprobedesc_t **pepdesc = (dtrace_eprobedesc_t **) addr; 443 dtrace_eprobedesc_t epdesc; 444 dtrace_ecb_t *ecb; 445 dtrace_action_t *act; 446 void *buf; 447 size_t size; 448 uintptr_t dest; 449 int nrecs; 450 451 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_EPROBE\n",__func__,__LINE__); 452 453 if (copyin((void *)*pepdesc, &epdesc, sizeof (epdesc)) != 0) 454 return (EFAULT); 455 456 mutex_enter(&dtrace_lock); 457 458 if ((ecb = dtrace_epid2ecb(state, epdesc.dtepd_epid)) == NULL) { 459 mutex_exit(&dtrace_lock); 460 return (EINVAL); 461 } 462 463 if (ecb->dte_probe == NULL) { 464 mutex_exit(&dtrace_lock); 465 return (EINVAL); 466 } 467 468 epdesc.dtepd_probeid = ecb->dte_probe->dtpr_id; 469 epdesc.dtepd_uarg = ecb->dte_uarg; 470 epdesc.dtepd_size = ecb->dte_size; 471 472 nrecs = epdesc.dtepd_nrecs; 473 epdesc.dtepd_nrecs = 0; 474 for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 475 if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 476 continue; 477 478 epdesc.dtepd_nrecs++; 479 } 480 481 /* 482 * Now that we have the size, we need to allocate a temporary 483 * buffer in which to store the complete description. We need 484 * the temporary buffer to be able to drop dtrace_lock() 485 * across the copyout(), below. 486 */ 487 size = sizeof (dtrace_eprobedesc_t) + 488 (epdesc.dtepd_nrecs * sizeof (dtrace_recdesc_t)); 489 490 buf = kmem_alloc(size, KM_SLEEP); 491 dest = (uintptr_t)buf; 492 493 bcopy(&epdesc, (void *)dest, sizeof (epdesc)); 494 dest += offsetof(dtrace_eprobedesc_t, dtepd_rec[0]); 495 496 for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 497 if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 498 continue; 499 500 if (nrecs-- == 0) 501 break; 502 503 bcopy(&act->dta_rec, (void *)dest, 504 sizeof (dtrace_recdesc_t)); 505 dest += sizeof (dtrace_recdesc_t); 506 } 507 508 mutex_exit(&dtrace_lock); 509 510 if (copyout(buf, (void *) *pepdesc, dest - (uintptr_t)buf) != 0) { 511 kmem_free(buf, size); 512 return (EFAULT); 513 } 514 515 kmem_free(buf, size); 516 return (0); 517 } 518 case DTRACEIOC_FORMAT: { 519 dtrace_fmtdesc_t *fmt = (dtrace_fmtdesc_t *) addr; 520 char *str; 521 int len; 522 523 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_FORMAT\n",__func__,__LINE__); 524 525 mutex_enter(&dtrace_lock); 526 527 if (fmt->dtfd_format == 0 || 528 fmt->dtfd_format > state->dts_nformats) { 529 mutex_exit(&dtrace_lock); 530 return (EINVAL); 531 } 532 533 /* 534 * Format strings are allocated contiguously and they are 535 * never freed; if a format index is less than the number 536 * of formats, we can assert that the format map is non-NULL 537 * and that the format for the specified index is non-NULL. 538 */ 539 ASSERT(state->dts_formats != NULL); 540 str = state->dts_formats[fmt->dtfd_format - 1]; 541 ASSERT(str != NULL); 542 543 len = strlen(str) + 1; 544 545 if (len > fmt->dtfd_length) { 546 fmt->dtfd_length = len; 547 } else { 548 if (copyout(str, fmt->dtfd_string, len) != 0) { 549 mutex_exit(&dtrace_lock); 550 return (EINVAL); 551 } 552 } 553 554 mutex_exit(&dtrace_lock); 555 return (0); 556 } 557 case DTRACEIOC_GO: { 558 int rval; 559 processorid_t *cpuid = (processorid_t *) addr; 560 561 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_GO\n",__func__,__LINE__); 562 563 rval = dtrace_state_go(state, cpuid); 564 565 return (rval); 566 } 567 case DTRACEIOC_PROBEARG: { 568 dtrace_argdesc_t *desc = (dtrace_argdesc_t *) addr; 569 dtrace_probe_t *probe; 570 dtrace_provider_t *prov; 571 572 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROBEARG\n",__func__,__LINE__); 573 574 if (desc->dtargd_id == DTRACE_IDNONE) 575 return (EINVAL); 576 577 if (desc->dtargd_ndx == DTRACE_ARGNONE) 578 return (EINVAL); 579 580 mutex_enter(&dtrace_provider_lock); 581 mutex_enter(&mod_lock); 582 mutex_enter(&dtrace_lock); 583 584 if (desc->dtargd_id > dtrace_nprobes) { 585 mutex_exit(&dtrace_lock); 586 mutex_exit(&mod_lock); 587 mutex_exit(&dtrace_provider_lock); 588 return (EINVAL); 589 } 590 591 if ((probe = dtrace_probes[desc->dtargd_id - 1]) == NULL) { 592 mutex_exit(&dtrace_lock); 593 mutex_exit(&mod_lock); 594 mutex_exit(&dtrace_provider_lock); 595 return (EINVAL); 596 } 597 598 mutex_exit(&dtrace_lock); 599 600 prov = probe->dtpr_provider; 601 602 if (prov->dtpv_pops.dtps_getargdesc == NULL) { 603 /* 604 * There isn't any typed information for this probe. 605 * Set the argument number to DTRACE_ARGNONE. 606 */ 607 desc->dtargd_ndx = DTRACE_ARGNONE; 608 } else { 609 desc->dtargd_native[0] = '\0'; 610 desc->dtargd_xlate[0] = '\0'; 611 desc->dtargd_mapping = desc->dtargd_ndx; 612 613 prov->dtpv_pops.dtps_getargdesc(prov->dtpv_arg, 614 probe->dtpr_id, probe->dtpr_arg, desc); 615 } 616 617 mutex_exit(&mod_lock); 618 mutex_exit(&dtrace_provider_lock); 619 620 return (0); 621 } 622 case DTRACEIOC_PROBEMATCH: 623 case DTRACEIOC_PROBES: { 624 dtrace_probedesc_t *p_desc = (dtrace_probedesc_t *) addr; 625 dtrace_probe_t *probe = NULL; 626 dtrace_probekey_t pkey; 627 dtrace_id_t i; 628 int m = 0; 629 uint32_t priv = 0; 630 uid_t uid = 0; 631 zoneid_t zoneid = 0; 632 633 DTRACE_IOCTL_PRINTF("%s(%d): %s\n",__func__,__LINE__, 634 cmd == DTRACEIOC_PROBEMATCH ? 635 "DTRACEIOC_PROBEMATCH":"DTRACEIOC_PROBES"); 636 637 p_desc->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 638 p_desc->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 639 p_desc->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 640 p_desc->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 641 642 /* 643 * Before we attempt to match this probe, we want to give 644 * all providers the opportunity to provide it. 645 */ 646 if (p_desc->dtpd_id == DTRACE_IDNONE) { 647 mutex_enter(&dtrace_provider_lock); 648 dtrace_probe_provide(p_desc, NULL); 649 mutex_exit(&dtrace_provider_lock); 650 p_desc->dtpd_id++; 651 } 652 653 if (cmd == DTRACEIOC_PROBEMATCH) { 654 dtrace_probekey(p_desc, &pkey); 655 pkey.dtpk_id = DTRACE_IDNONE; 656 } 657 658 dtrace_cred2priv(td->td_ucred, &priv, &uid, &zoneid); 659 660 mutex_enter(&dtrace_lock); 661 662 if (cmd == DTRACEIOC_PROBEMATCH) { 663 for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 664 if ((probe = dtrace_probes[i - 1]) != NULL && 665 (m = dtrace_match_probe(probe, &pkey, 666 priv, uid, zoneid)) != 0) 667 break; 668 } 669 670 if (m < 0) { 671 mutex_exit(&dtrace_lock); 672 return (EINVAL); 673 } 674 675 } else { 676 for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 677 if ((probe = dtrace_probes[i - 1]) != NULL && 678 dtrace_match_priv(probe, priv, uid, zoneid)) 679 break; 680 } 681 } 682 683 if (probe == NULL) { 684 mutex_exit(&dtrace_lock); 685 return (ESRCH); 686 } 687 688 dtrace_probe_description(probe, p_desc); 689 mutex_exit(&dtrace_lock); 690 691 return (0); 692 } 693 case DTRACEIOC_PROVIDER: { 694 dtrace_providerdesc_t *pvd = (dtrace_providerdesc_t *) addr; 695 dtrace_provider_t *pvp; 696 697 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROVIDER\n",__func__,__LINE__); 698 699 pvd->dtvd_name[DTRACE_PROVNAMELEN - 1] = '\0'; 700 mutex_enter(&dtrace_provider_lock); 701 702 for (pvp = dtrace_provider; pvp != NULL; pvp = pvp->dtpv_next) { 703 if (strcmp(pvp->dtpv_name, pvd->dtvd_name) == 0) 704 break; 705 } 706 707 mutex_exit(&dtrace_provider_lock); 708 709 if (pvp == NULL) 710 return (ESRCH); 711 712 bcopy(&pvp->dtpv_priv, &pvd->dtvd_priv, sizeof (dtrace_ppriv_t)); 713 bcopy(&pvp->dtpv_attr, &pvd->dtvd_attr, sizeof (dtrace_pattr_t)); 714 715 return (0); 716 } 717 case DTRACEIOC_REPLICATE: { 718 dtrace_repldesc_t *desc = (dtrace_repldesc_t *) addr; 719 dtrace_probedesc_t *match = &desc->dtrpd_match; 720 dtrace_probedesc_t *create = &desc->dtrpd_create; 721 int err; 722 723 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_REPLICATE\n",__func__,__LINE__); 724 725 match->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 726 match->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 727 match->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 728 match->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 729 730 create->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 731 create->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 732 create->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 733 create->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 734 735 mutex_enter(&dtrace_lock); 736 err = dtrace_enabling_replicate(state, match, create); 737 mutex_exit(&dtrace_lock); 738 739 return (err); 740 } 741 case DTRACEIOC_STATUS: { 742 dtrace_status_t *stat = (dtrace_status_t *) addr; 743 dtrace_dstate_t *dstate; 744 int i, j; 745 uint64_t nerrs; 746 747 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STATUS\n",__func__,__LINE__); 748 749 /* 750 * See the comment in dtrace_state_deadman() for the reason 751 * for setting dts_laststatus to INT64_MAX before setting 752 * it to the correct value. 753 */ 754 state->dts_laststatus = INT64_MAX; 755 dtrace_membar_producer(); 756 state->dts_laststatus = dtrace_gethrtime(); 757 758 bzero(stat, sizeof (*stat)); 759 760 mutex_enter(&dtrace_lock); 761 762 if (state->dts_activity == DTRACE_ACTIVITY_INACTIVE) { 763 mutex_exit(&dtrace_lock); 764 return (ENOENT); 765 } 766 767 if (state->dts_activity == DTRACE_ACTIVITY_DRAINING) 768 stat->dtst_exiting = 1; 769 770 nerrs = state->dts_errors; 771 dstate = &state->dts_vstate.dtvs_dynvars; 772 773 for (i = 0; i < NCPU; i++) { 774 #if !defined(sun) 775 if (pcpu_find(i) == NULL) 776 continue; 777 #endif 778 dtrace_dstate_percpu_t *dcpu = &dstate->dtds_percpu[i]; 779 780 stat->dtst_dyndrops += dcpu->dtdsc_drops; 781 stat->dtst_dyndrops_dirty += dcpu->dtdsc_dirty_drops; 782 stat->dtst_dyndrops_rinsing += dcpu->dtdsc_rinsing_drops; 783 784 if (state->dts_buffer[i].dtb_flags & DTRACEBUF_FULL) 785 stat->dtst_filled++; 786 787 nerrs += state->dts_buffer[i].dtb_errors; 788 789 for (j = 0; j < state->dts_nspeculations; j++) { 790 dtrace_speculation_t *spec; 791 dtrace_buffer_t *buf; 792 793 spec = &state->dts_speculations[j]; 794 buf = &spec->dtsp_buffer[i]; 795 stat->dtst_specdrops += buf->dtb_xamot_drops; 796 } 797 } 798 799 stat->dtst_specdrops_busy = state->dts_speculations_busy; 800 stat->dtst_specdrops_unavail = state->dts_speculations_unavail; 801 stat->dtst_stkstroverflows = state->dts_stkstroverflows; 802 stat->dtst_dblerrors = state->dts_dblerrors; 803 stat->dtst_killed = 804 (state->dts_activity == DTRACE_ACTIVITY_KILLED); 805 stat->dtst_errors = nerrs; 806 807 mutex_exit(&dtrace_lock); 808 809 return (0); 810 } 811 case DTRACEIOC_STOP: { 812 int rval; 813 processorid_t *cpuid = (processorid_t *) addr; 814 815 DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STOP\n",__func__,__LINE__); 816 817 mutex_enter(&dtrace_lock); 818 rval = dtrace_state_stop(state, cpuid); 819 mutex_exit(&dtrace_lock); 820 821 return (rval); 822 } 823 default: 824 error = ENOTTY; 825 } 826 return (error); 827 } 828