1179237Sjb/* 2179237Sjb * CDDL HEADER START 3179237Sjb * 4179237Sjb * The contents of this file are subject to the terms of the 5179237Sjb * Common Development and Distribution License (the "License"). 6179237Sjb * You may not use this file except in compliance with the License. 7179237Sjb * 8179237Sjb * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9179237Sjb * or http://www.opensolaris.org/os/licensing. 10179237Sjb * See the License for the specific language governing permissions 11179237Sjb * and limitations under the License. 12179237Sjb * 13179237Sjb * When distributing Covered Code, include this CDDL HEADER in each 14179237Sjb * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15179237Sjb * If applicable, add the following below this CDDL HEADER, with the 16179237Sjb * fields enclosed by brackets "[]" replaced with your own identifying 17179237Sjb * information: Portions Copyright [yyyy] [name of copyright owner] 18179237Sjb * 19179237Sjb * CDDL HEADER END 20179237Sjb * 21179237Sjb * $FreeBSD$ 22179237Sjb * 23179237Sjb */ 24179237Sjb 25179237Sjbstatic int dtrace_verbose_ioctl; 26179237SjbSYSCTL_INT(_debug_dtrace, OID_AUTO, verbose_ioctl, CTLFLAG_RW, &dtrace_verbose_ioctl, 0, ""); 27179237Sjb 28179237Sjb#define DTRACE_IOCTL_PRINTF(fmt, ...) if (dtrace_verbose_ioctl) printf(fmt, ## __VA_ARGS__ ) 29179237Sjb 30211608Srpaulostatic int 31211608Srpaulodtrace_ioctl_helper(struct cdev *dev, u_long cmd, caddr_t addr, int flags, 32211608Srpaulo struct thread *td) 33211608Srpaulo{ 34211608Srpaulo int rval; 35211608Srpaulo dof_helper_t *dhp = NULL; 36211608Srpaulo dof_hdr_t *dof = NULL; 37211608Srpaulo 38211608Srpaulo switch (cmd) { 39211608Srpaulo case DTRACEHIOC_ADDDOF: 40211608Srpaulo dhp = (dof_helper_t *)addr; 41211608Srpaulo /* XXX all because dofhp_dof is 64 bit */ 42233521Sgonzo addr = (caddr_t)(vm_offset_t)dhp->dofhp_dof; 43211608Srpaulo /* FALLTHROUGH */ 44211608Srpaulo case DTRACEHIOC_ADD: 45211608Srpaulo dof = dtrace_dof_copyin((intptr_t)addr, &rval); 46211608Srpaulo 47211608Srpaulo if (dof == NULL) 48211608Srpaulo return (rval); 49211608Srpaulo 50211608Srpaulo mutex_enter(&dtrace_lock); 51211608Srpaulo if ((rval = dtrace_helper_slurp((dof_hdr_t *)dof, dhp)) != -1) { 52211608Srpaulo if (dhp) { 53211608Srpaulo dhp->gen = rval; 54211608Srpaulo copyout(dhp, addr, sizeof(*dhp)); 55211608Srpaulo } 56211608Srpaulo rval = 0; 57211608Srpaulo } else { 58211608Srpaulo rval = EINVAL; 59211608Srpaulo } 60211608Srpaulo mutex_exit(&dtrace_lock); 61211608Srpaulo return (rval); 62211608Srpaulo case DTRACEHIOC_REMOVE: 63211608Srpaulo mutex_enter(&dtrace_lock); 64211608Srpaulo rval = dtrace_helper_destroygen((int)*addr); 65211608Srpaulo mutex_exit(&dtrace_lock); 66211608Srpaulo 67211608Srpaulo return (rval); 68211608Srpaulo default: 69211608Srpaulo break; 70211608Srpaulo } 71211608Srpaulo 72211608Srpaulo return (ENOTTY); 73211608Srpaulo} 74211608Srpaulo 75179237Sjb/* ARGSUSED */ 76179237Sjbstatic int 77179237Sjbdtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 78179237Sjb int flags __unused, struct thread *td) 79179237Sjb{ 80184698Srodrigc#if __FreeBSD_version < 800039 81179237Sjb dtrace_state_t *state = dev->si_drv1; 82184698Srodrigc#else 83184698Srodrigc dtrace_state_t *state; 84184698Srodrigc devfs_get_cdevpriv((void **) &state); 85184698Srodrigc#endif 86179237Sjb int error = 0; 87179237Sjb if (state == NULL) 88179237Sjb return (EINVAL); 89179237Sjb 90179237Sjb if (state->dts_anon) { 91179237Sjb ASSERT(dtrace_anon.dta_state == NULL); 92179237Sjb state = state->dts_anon; 93179237Sjb } 94179237Sjb 95179237Sjb switch (cmd) { 96179237Sjb case DTRACEIOC_AGGDESC: { 97179237Sjb dtrace_aggdesc_t **paggdesc = (dtrace_aggdesc_t **) addr; 98179237Sjb dtrace_aggdesc_t aggdesc; 99179237Sjb dtrace_action_t *act; 100179237Sjb dtrace_aggregation_t *agg; 101179237Sjb int nrecs; 102179237Sjb uint32_t offs; 103179237Sjb dtrace_recdesc_t *lrec; 104179237Sjb void *buf; 105179237Sjb size_t size; 106179237Sjb uintptr_t dest; 107179237Sjb 108179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_AGGDESC\n",__func__,__LINE__); 109179237Sjb 110179237Sjb if (copyin((void *) *paggdesc, &aggdesc, sizeof (aggdesc)) != 0) 111179237Sjb return (EFAULT); 112179237Sjb 113179237Sjb mutex_enter(&dtrace_lock); 114179237Sjb 115179237Sjb if ((agg = dtrace_aggid2agg(state, aggdesc.dtagd_id)) == NULL) { 116179237Sjb mutex_exit(&dtrace_lock); 117179237Sjb return (EINVAL); 118179237Sjb } 119179237Sjb 120179237Sjb aggdesc.dtagd_epid = agg->dtag_ecb->dte_epid; 121179237Sjb 122179237Sjb nrecs = aggdesc.dtagd_nrecs; 123179237Sjb aggdesc.dtagd_nrecs = 0; 124179237Sjb 125179237Sjb offs = agg->dtag_base; 126179237Sjb lrec = &agg->dtag_action.dta_rec; 127179237Sjb aggdesc.dtagd_size = lrec->dtrd_offset + lrec->dtrd_size - offs; 128179237Sjb 129179237Sjb for (act = agg->dtag_first; ; act = act->dta_next) { 130179237Sjb ASSERT(act->dta_intuple || 131179237Sjb DTRACEACT_ISAGG(act->dta_kind)); 132179237Sjb 133179237Sjb /* 134179237Sjb * If this action has a record size of zero, it 135179237Sjb * denotes an argument to the aggregating action. 136179237Sjb * Because the presence of this record doesn't (or 137179237Sjb * shouldn't) affect the way the data is interpreted, 138179237Sjb * we don't copy it out to save user-level the 139179237Sjb * confusion of dealing with a zero-length record. 140179237Sjb */ 141179237Sjb if (act->dta_rec.dtrd_size == 0) { 142179237Sjb ASSERT(agg->dtag_hasarg); 143179237Sjb continue; 144179237Sjb } 145179237Sjb 146179237Sjb aggdesc.dtagd_nrecs++; 147179237Sjb 148179237Sjb if (act == &agg->dtag_action) 149179237Sjb break; 150179237Sjb } 151179237Sjb 152179237Sjb /* 153179237Sjb * Now that we have the size, we need to allocate a temporary 154179237Sjb * buffer in which to store the complete description. We need 155179237Sjb * the temporary buffer to be able to drop dtrace_lock() 156179237Sjb * across the copyout(), below. 157179237Sjb */ 158179237Sjb size = sizeof (dtrace_aggdesc_t) + 159179237Sjb (aggdesc.dtagd_nrecs * sizeof (dtrace_recdesc_t)); 160179237Sjb 161179237Sjb buf = kmem_alloc(size, KM_SLEEP); 162179237Sjb dest = (uintptr_t)buf; 163179237Sjb 164179237Sjb bcopy(&aggdesc, (void *)dest, sizeof (aggdesc)); 165179237Sjb dest += offsetof(dtrace_aggdesc_t, dtagd_rec[0]); 166179237Sjb 167179237Sjb for (act = agg->dtag_first; ; act = act->dta_next) { 168179237Sjb dtrace_recdesc_t rec = act->dta_rec; 169179237Sjb 170179237Sjb /* 171179237Sjb * See the comment in the above loop for why we pass 172179237Sjb * over zero-length records. 173179237Sjb */ 174179237Sjb if (rec.dtrd_size == 0) { 175179237Sjb ASSERT(agg->dtag_hasarg); 176179237Sjb continue; 177179237Sjb } 178179237Sjb 179179237Sjb if (nrecs-- == 0) 180179237Sjb break; 181179237Sjb 182179237Sjb rec.dtrd_offset -= offs; 183179237Sjb bcopy(&rec, (void *)dest, sizeof (rec)); 184179237Sjb dest += sizeof (dtrace_recdesc_t); 185179237Sjb 186179237Sjb if (act == &agg->dtag_action) 187179237Sjb break; 188179237Sjb } 189179237Sjb 190179237Sjb mutex_exit(&dtrace_lock); 191179237Sjb 192179237Sjb if (copyout(buf, (void *) *paggdesc, dest - (uintptr_t)buf) != 0) { 193179237Sjb kmem_free(buf, size); 194179237Sjb return (EFAULT); 195179237Sjb } 196179237Sjb 197179237Sjb kmem_free(buf, size); 198179237Sjb return (0); 199179237Sjb } 200179237Sjb case DTRACEIOC_AGGSNAP: 201179237Sjb case DTRACEIOC_BUFSNAP: { 202179237Sjb dtrace_bufdesc_t **pdesc = (dtrace_bufdesc_t **) addr; 203179237Sjb dtrace_bufdesc_t desc; 204179237Sjb caddr_t cached; 205179237Sjb dtrace_buffer_t *buf; 206179237Sjb 207179237Sjb dtrace_debug_output(); 208179237Sjb 209179237Sjb if (copyin((void *) *pdesc, &desc, sizeof (desc)) != 0) 210179237Sjb return (EFAULT); 211179237Sjb 212179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): %s curcpu %d cpu %d\n", 213179237Sjb __func__,__LINE__, 214179237Sjb cmd == DTRACEIOC_AGGSNAP ? 215179237Sjb "DTRACEIOC_AGGSNAP":"DTRACEIOC_BUFSNAP", 216179237Sjb curcpu, desc.dtbd_cpu); 217179237Sjb 218246538Spluknet if (desc.dtbd_cpu >= NCPU) 219179237Sjb return (ENOENT); 220179237Sjb if (pcpu_find(desc.dtbd_cpu) == NULL) 221179237Sjb return (ENOENT); 222179237Sjb 223179237Sjb mutex_enter(&dtrace_lock); 224179237Sjb 225179237Sjb if (cmd == DTRACEIOC_BUFSNAP) { 226179237Sjb buf = &state->dts_buffer[desc.dtbd_cpu]; 227179237Sjb } else { 228179237Sjb buf = &state->dts_aggbuffer[desc.dtbd_cpu]; 229179237Sjb } 230179237Sjb 231179237Sjb if (buf->dtb_flags & (DTRACEBUF_RING | DTRACEBUF_FILL)) { 232179237Sjb size_t sz = buf->dtb_offset; 233179237Sjb 234179237Sjb if (state->dts_activity != DTRACE_ACTIVITY_STOPPED) { 235179237Sjb mutex_exit(&dtrace_lock); 236179237Sjb return (EBUSY); 237179237Sjb } 238179237Sjb 239179237Sjb /* 240179237Sjb * If this buffer has already been consumed, we're 241179237Sjb * going to indicate that there's nothing left here 242179237Sjb * to consume. 243179237Sjb */ 244179237Sjb if (buf->dtb_flags & DTRACEBUF_CONSUMED) { 245179237Sjb mutex_exit(&dtrace_lock); 246179237Sjb 247179237Sjb desc.dtbd_size = 0; 248179237Sjb desc.dtbd_drops = 0; 249179237Sjb desc.dtbd_errors = 0; 250179237Sjb desc.dtbd_oldest = 0; 251179237Sjb sz = sizeof (desc); 252179237Sjb 253179237Sjb if (copyout(&desc, (void *) *pdesc, sz) != 0) 254179237Sjb return (EFAULT); 255179237Sjb 256179237Sjb return (0); 257179237Sjb } 258179237Sjb 259179237Sjb /* 260179237Sjb * If this is a ring buffer that has wrapped, we want 261179237Sjb * to copy the whole thing out. 262179237Sjb */ 263179237Sjb if (buf->dtb_flags & DTRACEBUF_WRAPPED) { 264179237Sjb dtrace_buffer_polish(buf); 265179237Sjb sz = buf->dtb_size; 266179237Sjb } 267179237Sjb 268179237Sjb if (copyout(buf->dtb_tomax, desc.dtbd_data, sz) != 0) { 269179237Sjb mutex_exit(&dtrace_lock); 270179237Sjb return (EFAULT); 271179237Sjb } 272179237Sjb 273179237Sjb desc.dtbd_size = sz; 274179237Sjb desc.dtbd_drops = buf->dtb_drops; 275179237Sjb desc.dtbd_errors = buf->dtb_errors; 276179237Sjb desc.dtbd_oldest = buf->dtb_xamot_offset; 277250574Smarkj desc.dtbd_timestamp = dtrace_gethrtime(); 278179237Sjb 279179237Sjb mutex_exit(&dtrace_lock); 280179237Sjb 281179237Sjb if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 282179237Sjb return (EFAULT); 283179237Sjb 284179237Sjb buf->dtb_flags |= DTRACEBUF_CONSUMED; 285179237Sjb 286179237Sjb return (0); 287179237Sjb } 288179237Sjb 289179237Sjb if (buf->dtb_tomax == NULL) { 290179237Sjb ASSERT(buf->dtb_xamot == NULL); 291179237Sjb mutex_exit(&dtrace_lock); 292179237Sjb return (ENOENT); 293179237Sjb } 294179237Sjb 295179237Sjb cached = buf->dtb_tomax; 296179237Sjb ASSERT(!(buf->dtb_flags & DTRACEBUF_NOSWITCH)); 297179237Sjb 298179237Sjb dtrace_xcall(desc.dtbd_cpu, 299179237Sjb (dtrace_xcall_t)dtrace_buffer_switch, buf); 300179237Sjb 301179237Sjb state->dts_errors += buf->dtb_xamot_errors; 302179237Sjb 303179237Sjb /* 304179237Sjb * If the buffers did not actually switch, then the cross call 305179237Sjb * did not take place -- presumably because the given CPU is 306179237Sjb * not in the ready set. If this is the case, we'll return 307179237Sjb * ENOENT. 308179237Sjb */ 309179237Sjb if (buf->dtb_tomax == cached) { 310179237Sjb ASSERT(buf->dtb_xamot != cached); 311179237Sjb mutex_exit(&dtrace_lock); 312179237Sjb return (ENOENT); 313179237Sjb } 314179237Sjb 315179237Sjb ASSERT(cached == buf->dtb_xamot); 316179237Sjb 317179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): copyout the buffer snapshot\n",__func__,__LINE__); 318179237Sjb 319179237Sjb /* 320179237Sjb * We have our snapshot; now copy it out. 321179237Sjb */ 322179237Sjb if (copyout(buf->dtb_xamot, desc.dtbd_data, 323179237Sjb buf->dtb_xamot_offset) != 0) { 324179237Sjb mutex_exit(&dtrace_lock); 325179237Sjb return (EFAULT); 326179237Sjb } 327179237Sjb 328179237Sjb desc.dtbd_size = buf->dtb_xamot_offset; 329179237Sjb desc.dtbd_drops = buf->dtb_xamot_drops; 330179237Sjb desc.dtbd_errors = buf->dtb_xamot_errors; 331179237Sjb desc.dtbd_oldest = 0; 332250574Smarkj desc.dtbd_timestamp = buf->dtb_switched; 333179237Sjb 334179237Sjb mutex_exit(&dtrace_lock); 335179237Sjb 336179237Sjb 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); 337179237Sjb 338179237Sjb /* 339179237Sjb * Finally, copy out the buffer description. 340179237Sjb */ 341179237Sjb if (copyout(&desc, (void *) *pdesc, sizeof (desc)) != 0) 342179237Sjb return (EFAULT); 343179237Sjb 344179237Sjb return (0); 345179237Sjb } 346179237Sjb case DTRACEIOC_CONF: { 347179237Sjb dtrace_conf_t conf; 348179237Sjb 349179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_CONF\n",__func__,__LINE__); 350179237Sjb 351179237Sjb bzero(&conf, sizeof (conf)); 352179237Sjb conf.dtc_difversion = DIF_VERSION; 353179237Sjb conf.dtc_difintregs = DIF_DIR_NREGS; 354179237Sjb conf.dtc_diftupregs = DIF_DTR_NREGS; 355179237Sjb conf.dtc_ctfmodel = CTF_MODEL_NATIVE; 356179237Sjb 357179237Sjb *((dtrace_conf_t *) addr) = conf; 358179237Sjb 359179237Sjb return (0); 360179237Sjb } 361179237Sjb case DTRACEIOC_DOFGET: { 362179237Sjb dof_hdr_t **pdof = (dof_hdr_t **) addr; 363179237Sjb dof_hdr_t hdr, *dof = *pdof; 364179237Sjb int rval; 365179237Sjb uint64_t len; 366179237Sjb 367179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_DOFGET\n",__func__,__LINE__); 368179237Sjb 369179237Sjb if (copyin((void *)dof, &hdr, sizeof (hdr)) != 0) 370179237Sjb return (EFAULT); 371179237Sjb 372179237Sjb mutex_enter(&dtrace_lock); 373179237Sjb dof = dtrace_dof_create(state); 374179237Sjb mutex_exit(&dtrace_lock); 375179237Sjb 376179237Sjb len = MIN(hdr.dofh_loadsz, dof->dofh_loadsz); 377179237Sjb rval = copyout(dof, (void *) *pdof, len); 378179237Sjb dtrace_dof_destroy(dof); 379179237Sjb 380179237Sjb return (rval == 0 ? 0 : EFAULT); 381179237Sjb } 382179237Sjb case DTRACEIOC_ENABLE: { 383179237Sjb dof_hdr_t *dof = NULL; 384179237Sjb dtrace_enabling_t *enab = NULL; 385179237Sjb dtrace_vstate_t *vstate; 386179237Sjb int err = 0; 387179237Sjb int rval; 388179237Sjb dtrace_enable_io_t *p = (dtrace_enable_io_t *) addr; 389179237Sjb 390179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_ENABLE\n",__func__,__LINE__); 391179237Sjb 392179237Sjb /* 393179237Sjb * If a NULL argument has been passed, we take this as our 394179237Sjb * cue to reevaluate our enablings. 395179237Sjb */ 396179237Sjb if (p->dof == NULL) { 397179237Sjb dtrace_enabling_matchall(); 398179237Sjb 399179237Sjb return (0); 400179237Sjb } 401179237Sjb 402179237Sjb if ((dof = dtrace_dof_copyin((uintptr_t) p->dof, &rval)) == NULL) 403179237Sjb return (EINVAL); 404179237Sjb 405179237Sjb mutex_enter(&cpu_lock); 406179237Sjb mutex_enter(&dtrace_lock); 407179237Sjb vstate = &state->dts_vstate; 408179237Sjb 409179237Sjb if (state->dts_activity != DTRACE_ACTIVITY_INACTIVE) { 410179237Sjb mutex_exit(&dtrace_lock); 411179237Sjb mutex_exit(&cpu_lock); 412179237Sjb dtrace_dof_destroy(dof); 413179237Sjb return (EBUSY); 414179237Sjb } 415179237Sjb 416179237Sjb if (dtrace_dof_slurp(dof, vstate, td->td_ucred, &enab, 0, B_TRUE) != 0) { 417179237Sjb mutex_exit(&dtrace_lock); 418179237Sjb mutex_exit(&cpu_lock); 419179237Sjb dtrace_dof_destroy(dof); 420179237Sjb return (EINVAL); 421179237Sjb } 422179237Sjb 423179237Sjb if ((rval = dtrace_dof_options(dof, state)) != 0) { 424179237Sjb dtrace_enabling_destroy(enab); 425179237Sjb mutex_exit(&dtrace_lock); 426179237Sjb mutex_exit(&cpu_lock); 427179237Sjb dtrace_dof_destroy(dof); 428179237Sjb return (rval); 429179237Sjb } 430179237Sjb 431179237Sjb if ((err = dtrace_enabling_match(enab, &p->n_matched)) == 0) { 432179237Sjb err = dtrace_enabling_retain(enab); 433179237Sjb } else { 434179237Sjb dtrace_enabling_destroy(enab); 435179237Sjb } 436179237Sjb 437179237Sjb mutex_exit(&cpu_lock); 438179237Sjb mutex_exit(&dtrace_lock); 439179237Sjb dtrace_dof_destroy(dof); 440179237Sjb 441179237Sjb return (err); 442179237Sjb } 443179237Sjb case DTRACEIOC_EPROBE: { 444179237Sjb dtrace_eprobedesc_t **pepdesc = (dtrace_eprobedesc_t **) addr; 445179237Sjb dtrace_eprobedesc_t epdesc; 446179237Sjb dtrace_ecb_t *ecb; 447179237Sjb dtrace_action_t *act; 448179237Sjb void *buf; 449179237Sjb size_t size; 450179237Sjb uintptr_t dest; 451179237Sjb int nrecs; 452179237Sjb 453179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_EPROBE\n",__func__,__LINE__); 454179237Sjb 455179237Sjb if (copyin((void *)*pepdesc, &epdesc, sizeof (epdesc)) != 0) 456179237Sjb return (EFAULT); 457179237Sjb 458179237Sjb mutex_enter(&dtrace_lock); 459179237Sjb 460179237Sjb if ((ecb = dtrace_epid2ecb(state, epdesc.dtepd_epid)) == NULL) { 461179237Sjb mutex_exit(&dtrace_lock); 462179237Sjb return (EINVAL); 463179237Sjb } 464179237Sjb 465179237Sjb if (ecb->dte_probe == NULL) { 466179237Sjb mutex_exit(&dtrace_lock); 467179237Sjb return (EINVAL); 468179237Sjb } 469179237Sjb 470179237Sjb epdesc.dtepd_probeid = ecb->dte_probe->dtpr_id; 471179237Sjb epdesc.dtepd_uarg = ecb->dte_uarg; 472179237Sjb epdesc.dtepd_size = ecb->dte_size; 473179237Sjb 474179237Sjb nrecs = epdesc.dtepd_nrecs; 475179237Sjb epdesc.dtepd_nrecs = 0; 476179237Sjb for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 477179237Sjb if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 478179237Sjb continue; 479179237Sjb 480179237Sjb epdesc.dtepd_nrecs++; 481179237Sjb } 482179237Sjb 483179237Sjb /* 484179237Sjb * Now that we have the size, we need to allocate a temporary 485179237Sjb * buffer in which to store the complete description. We need 486179237Sjb * the temporary buffer to be able to drop dtrace_lock() 487179237Sjb * across the copyout(), below. 488179237Sjb */ 489179237Sjb size = sizeof (dtrace_eprobedesc_t) + 490179237Sjb (epdesc.dtepd_nrecs * sizeof (dtrace_recdesc_t)); 491179237Sjb 492179237Sjb buf = kmem_alloc(size, KM_SLEEP); 493179237Sjb dest = (uintptr_t)buf; 494179237Sjb 495179237Sjb bcopy(&epdesc, (void *)dest, sizeof (epdesc)); 496179237Sjb dest += offsetof(dtrace_eprobedesc_t, dtepd_rec[0]); 497179237Sjb 498179237Sjb for (act = ecb->dte_action; act != NULL; act = act->dta_next) { 499179237Sjb if (DTRACEACT_ISAGG(act->dta_kind) || act->dta_intuple) 500179237Sjb continue; 501179237Sjb 502179237Sjb if (nrecs-- == 0) 503179237Sjb break; 504179237Sjb 505179237Sjb bcopy(&act->dta_rec, (void *)dest, 506179237Sjb sizeof (dtrace_recdesc_t)); 507179237Sjb dest += sizeof (dtrace_recdesc_t); 508179237Sjb } 509179237Sjb 510179237Sjb mutex_exit(&dtrace_lock); 511179237Sjb 512179237Sjb if (copyout(buf, (void *) *pepdesc, dest - (uintptr_t)buf) != 0) { 513179237Sjb kmem_free(buf, size); 514179237Sjb return (EFAULT); 515179237Sjb } 516179237Sjb 517179237Sjb kmem_free(buf, size); 518179237Sjb return (0); 519179237Sjb } 520179237Sjb case DTRACEIOC_FORMAT: { 521179237Sjb dtrace_fmtdesc_t *fmt = (dtrace_fmtdesc_t *) addr; 522179237Sjb char *str; 523179237Sjb int len; 524179237Sjb 525179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_FORMAT\n",__func__,__LINE__); 526179237Sjb 527179237Sjb mutex_enter(&dtrace_lock); 528179237Sjb 529179237Sjb if (fmt->dtfd_format == 0 || 530179237Sjb fmt->dtfd_format > state->dts_nformats) { 531179237Sjb mutex_exit(&dtrace_lock); 532179237Sjb return (EINVAL); 533179237Sjb } 534179237Sjb 535179237Sjb /* 536179237Sjb * Format strings are allocated contiguously and they are 537179237Sjb * never freed; if a format index is less than the number 538179237Sjb * of formats, we can assert that the format map is non-NULL 539179237Sjb * and that the format for the specified index is non-NULL. 540179237Sjb */ 541179237Sjb ASSERT(state->dts_formats != NULL); 542179237Sjb str = state->dts_formats[fmt->dtfd_format - 1]; 543179237Sjb ASSERT(str != NULL); 544179237Sjb 545179237Sjb len = strlen(str) + 1; 546179237Sjb 547179237Sjb if (len > fmt->dtfd_length) { 548179237Sjb fmt->dtfd_length = len; 549179237Sjb } else { 550179237Sjb if (copyout(str, fmt->dtfd_string, len) != 0) { 551179237Sjb mutex_exit(&dtrace_lock); 552179237Sjb return (EINVAL); 553179237Sjb } 554179237Sjb } 555179237Sjb 556179237Sjb mutex_exit(&dtrace_lock); 557179237Sjb return (0); 558179237Sjb } 559179237Sjb case DTRACEIOC_GO: { 560179237Sjb int rval; 561179237Sjb processorid_t *cpuid = (processorid_t *) addr; 562179237Sjb 563179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_GO\n",__func__,__LINE__); 564179237Sjb 565179237Sjb rval = dtrace_state_go(state, cpuid); 566179237Sjb 567179237Sjb return (rval); 568179237Sjb } 569179237Sjb case DTRACEIOC_PROBEARG: { 570179237Sjb dtrace_argdesc_t *desc = (dtrace_argdesc_t *) addr; 571179237Sjb dtrace_probe_t *probe; 572179237Sjb dtrace_provider_t *prov; 573179237Sjb 574179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROBEARG\n",__func__,__LINE__); 575179237Sjb 576179237Sjb if (desc->dtargd_id == DTRACE_IDNONE) 577179237Sjb return (EINVAL); 578179237Sjb 579179237Sjb if (desc->dtargd_ndx == DTRACE_ARGNONE) 580179237Sjb return (EINVAL); 581179237Sjb 582179237Sjb mutex_enter(&dtrace_provider_lock); 583252850Smarkj#if defined(sun) 584179237Sjb mutex_enter(&mod_lock); 585252850Smarkj#endif 586179237Sjb mutex_enter(&dtrace_lock); 587179237Sjb 588179237Sjb if (desc->dtargd_id > dtrace_nprobes) { 589179237Sjb mutex_exit(&dtrace_lock); 590252850Smarkj#if defined(sun) 591179237Sjb mutex_exit(&mod_lock); 592252850Smarkj#endif 593179237Sjb mutex_exit(&dtrace_provider_lock); 594179237Sjb return (EINVAL); 595179237Sjb } 596179237Sjb 597179237Sjb if ((probe = dtrace_probes[desc->dtargd_id - 1]) == NULL) { 598179237Sjb mutex_exit(&dtrace_lock); 599252850Smarkj#if defined(sun) 600179237Sjb mutex_exit(&mod_lock); 601252850Smarkj#endif 602179237Sjb mutex_exit(&dtrace_provider_lock); 603179237Sjb return (EINVAL); 604179237Sjb } 605179237Sjb 606179237Sjb mutex_exit(&dtrace_lock); 607179237Sjb 608179237Sjb prov = probe->dtpr_provider; 609179237Sjb 610179237Sjb if (prov->dtpv_pops.dtps_getargdesc == NULL) { 611179237Sjb /* 612179237Sjb * There isn't any typed information for this probe. 613179237Sjb * Set the argument number to DTRACE_ARGNONE. 614179237Sjb */ 615179237Sjb desc->dtargd_ndx = DTRACE_ARGNONE; 616179237Sjb } else { 617179237Sjb desc->dtargd_native[0] = '\0'; 618179237Sjb desc->dtargd_xlate[0] = '\0'; 619179237Sjb desc->dtargd_mapping = desc->dtargd_ndx; 620179237Sjb 621179237Sjb prov->dtpv_pops.dtps_getargdesc(prov->dtpv_arg, 622179237Sjb probe->dtpr_id, probe->dtpr_arg, desc); 623179237Sjb } 624179237Sjb 625252850Smarkj#if defined(sun) 626179237Sjb mutex_exit(&mod_lock); 627252850Smarkj#endif 628179237Sjb mutex_exit(&dtrace_provider_lock); 629179237Sjb 630179237Sjb return (0); 631179237Sjb } 632179237Sjb case DTRACEIOC_PROBEMATCH: 633179237Sjb case DTRACEIOC_PROBES: { 634179237Sjb dtrace_probedesc_t *p_desc = (dtrace_probedesc_t *) addr; 635179237Sjb dtrace_probe_t *probe = NULL; 636179237Sjb dtrace_probekey_t pkey; 637179237Sjb dtrace_id_t i; 638179237Sjb int m = 0; 639179237Sjb uint32_t priv = 0; 640179237Sjb uid_t uid = 0; 641179237Sjb zoneid_t zoneid = 0; 642179237Sjb 643179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): %s\n",__func__,__LINE__, 644179237Sjb cmd == DTRACEIOC_PROBEMATCH ? 645179237Sjb "DTRACEIOC_PROBEMATCH":"DTRACEIOC_PROBES"); 646179237Sjb 647179237Sjb p_desc->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 648179237Sjb p_desc->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 649179237Sjb p_desc->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 650179237Sjb p_desc->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 651179237Sjb 652179237Sjb /* 653179237Sjb * Before we attempt to match this probe, we want to give 654179237Sjb * all providers the opportunity to provide it. 655179237Sjb */ 656179237Sjb if (p_desc->dtpd_id == DTRACE_IDNONE) { 657179237Sjb mutex_enter(&dtrace_provider_lock); 658179237Sjb dtrace_probe_provide(p_desc, NULL); 659179237Sjb mutex_exit(&dtrace_provider_lock); 660179237Sjb p_desc->dtpd_id++; 661179237Sjb } 662179237Sjb 663179237Sjb if (cmd == DTRACEIOC_PROBEMATCH) { 664179237Sjb dtrace_probekey(p_desc, &pkey); 665179237Sjb pkey.dtpk_id = DTRACE_IDNONE; 666179237Sjb } 667179237Sjb 668179237Sjb dtrace_cred2priv(td->td_ucred, &priv, &uid, &zoneid); 669179237Sjb 670179237Sjb mutex_enter(&dtrace_lock); 671179237Sjb 672179237Sjb if (cmd == DTRACEIOC_PROBEMATCH) { 673179237Sjb for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 674179237Sjb if ((probe = dtrace_probes[i - 1]) != NULL && 675179237Sjb (m = dtrace_match_probe(probe, &pkey, 676179237Sjb priv, uid, zoneid)) != 0) 677179237Sjb break; 678179237Sjb } 679179237Sjb 680179237Sjb if (m < 0) { 681179237Sjb mutex_exit(&dtrace_lock); 682179237Sjb return (EINVAL); 683179237Sjb } 684179237Sjb 685179237Sjb } else { 686179237Sjb for (i = p_desc->dtpd_id; i <= dtrace_nprobes; i++) { 687179237Sjb if ((probe = dtrace_probes[i - 1]) != NULL && 688179237Sjb dtrace_match_priv(probe, priv, uid, zoneid)) 689179237Sjb break; 690179237Sjb } 691179237Sjb } 692179237Sjb 693179237Sjb if (probe == NULL) { 694179237Sjb mutex_exit(&dtrace_lock); 695179237Sjb return (ESRCH); 696179237Sjb } 697179237Sjb 698179237Sjb dtrace_probe_description(probe, p_desc); 699179237Sjb mutex_exit(&dtrace_lock); 700179237Sjb 701179237Sjb return (0); 702179237Sjb } 703179237Sjb case DTRACEIOC_PROVIDER: { 704179237Sjb dtrace_providerdesc_t *pvd = (dtrace_providerdesc_t *) addr; 705179237Sjb dtrace_provider_t *pvp; 706179237Sjb 707179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_PROVIDER\n",__func__,__LINE__); 708179237Sjb 709179237Sjb pvd->dtvd_name[DTRACE_PROVNAMELEN - 1] = '\0'; 710179237Sjb mutex_enter(&dtrace_provider_lock); 711179237Sjb 712179237Sjb for (pvp = dtrace_provider; pvp != NULL; pvp = pvp->dtpv_next) { 713179237Sjb if (strcmp(pvp->dtpv_name, pvd->dtvd_name) == 0) 714179237Sjb break; 715179237Sjb } 716179237Sjb 717179237Sjb mutex_exit(&dtrace_provider_lock); 718179237Sjb 719179237Sjb if (pvp == NULL) 720179237Sjb return (ESRCH); 721179237Sjb 722179237Sjb bcopy(&pvp->dtpv_priv, &pvd->dtvd_priv, sizeof (dtrace_ppriv_t)); 723179237Sjb bcopy(&pvp->dtpv_attr, &pvd->dtvd_attr, sizeof (dtrace_pattr_t)); 724179237Sjb 725179237Sjb return (0); 726179237Sjb } 727179237Sjb case DTRACEIOC_REPLICATE: { 728179237Sjb dtrace_repldesc_t *desc = (dtrace_repldesc_t *) addr; 729179237Sjb dtrace_probedesc_t *match = &desc->dtrpd_match; 730179237Sjb dtrace_probedesc_t *create = &desc->dtrpd_create; 731179237Sjb int err; 732179237Sjb 733179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_REPLICATE\n",__func__,__LINE__); 734179237Sjb 735179237Sjb match->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 736179237Sjb match->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 737179237Sjb match->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 738179237Sjb match->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 739179237Sjb 740179237Sjb create->dtpd_provider[DTRACE_PROVNAMELEN - 1] = '\0'; 741179237Sjb create->dtpd_mod[DTRACE_MODNAMELEN - 1] = '\0'; 742179237Sjb create->dtpd_func[DTRACE_FUNCNAMELEN - 1] = '\0'; 743179237Sjb create->dtpd_name[DTRACE_NAMELEN - 1] = '\0'; 744179237Sjb 745179237Sjb mutex_enter(&dtrace_lock); 746179237Sjb err = dtrace_enabling_replicate(state, match, create); 747179237Sjb mutex_exit(&dtrace_lock); 748179237Sjb 749179237Sjb return (err); 750179237Sjb } 751179237Sjb case DTRACEIOC_STATUS: { 752179237Sjb dtrace_status_t *stat = (dtrace_status_t *) addr; 753179237Sjb dtrace_dstate_t *dstate; 754179237Sjb int i, j; 755179237Sjb uint64_t nerrs; 756179237Sjb 757179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STATUS\n",__func__,__LINE__); 758179237Sjb 759179237Sjb /* 760179237Sjb * See the comment in dtrace_state_deadman() for the reason 761179237Sjb * for setting dts_laststatus to INT64_MAX before setting 762179237Sjb * it to the correct value. 763179237Sjb */ 764179237Sjb state->dts_laststatus = INT64_MAX; 765179237Sjb dtrace_membar_producer(); 766179237Sjb state->dts_laststatus = dtrace_gethrtime(); 767179237Sjb 768179237Sjb bzero(stat, sizeof (*stat)); 769179237Sjb 770179237Sjb mutex_enter(&dtrace_lock); 771179237Sjb 772179237Sjb if (state->dts_activity == DTRACE_ACTIVITY_INACTIVE) { 773179237Sjb mutex_exit(&dtrace_lock); 774179237Sjb return (ENOENT); 775179237Sjb } 776179237Sjb 777179237Sjb if (state->dts_activity == DTRACE_ACTIVITY_DRAINING) 778179237Sjb stat->dtst_exiting = 1; 779179237Sjb 780179237Sjb nerrs = state->dts_errors; 781179237Sjb dstate = &state->dts_vstate.dtvs_dynvars; 782179237Sjb 783179237Sjb for (i = 0; i < NCPU; i++) { 784179237Sjb#if !defined(sun) 785179237Sjb if (pcpu_find(i) == NULL) 786179237Sjb continue; 787179237Sjb#endif 788179237Sjb dtrace_dstate_percpu_t *dcpu = &dstate->dtds_percpu[i]; 789179237Sjb 790179237Sjb stat->dtst_dyndrops += dcpu->dtdsc_drops; 791179237Sjb stat->dtst_dyndrops_dirty += dcpu->dtdsc_dirty_drops; 792179237Sjb stat->dtst_dyndrops_rinsing += dcpu->dtdsc_rinsing_drops; 793179237Sjb 794179237Sjb if (state->dts_buffer[i].dtb_flags & DTRACEBUF_FULL) 795179237Sjb stat->dtst_filled++; 796179237Sjb 797179237Sjb nerrs += state->dts_buffer[i].dtb_errors; 798179237Sjb 799179237Sjb for (j = 0; j < state->dts_nspeculations; j++) { 800179237Sjb dtrace_speculation_t *spec; 801179237Sjb dtrace_buffer_t *buf; 802179237Sjb 803179237Sjb spec = &state->dts_speculations[j]; 804179237Sjb buf = &spec->dtsp_buffer[i]; 805179237Sjb stat->dtst_specdrops += buf->dtb_xamot_drops; 806179237Sjb } 807179237Sjb } 808179237Sjb 809179237Sjb stat->dtst_specdrops_busy = state->dts_speculations_busy; 810179237Sjb stat->dtst_specdrops_unavail = state->dts_speculations_unavail; 811179237Sjb stat->dtst_stkstroverflows = state->dts_stkstroverflows; 812179237Sjb stat->dtst_dblerrors = state->dts_dblerrors; 813179237Sjb stat->dtst_killed = 814179237Sjb (state->dts_activity == DTRACE_ACTIVITY_KILLED); 815179237Sjb stat->dtst_errors = nerrs; 816179237Sjb 817179237Sjb mutex_exit(&dtrace_lock); 818179237Sjb 819179237Sjb return (0); 820179237Sjb } 821179237Sjb case DTRACEIOC_STOP: { 822179237Sjb int rval; 823179237Sjb processorid_t *cpuid = (processorid_t *) addr; 824179237Sjb 825179237Sjb DTRACE_IOCTL_PRINTF("%s(%d): DTRACEIOC_STOP\n",__func__,__LINE__); 826179237Sjb 827179237Sjb mutex_enter(&dtrace_lock); 828179237Sjb rval = dtrace_state_stop(state, cpuid); 829179237Sjb mutex_exit(&dtrace_lock); 830179237Sjb 831179237Sjb return (rval); 832179237Sjb } 833179237Sjb default: 834179237Sjb error = ENOTTY; 835179237Sjb } 836179237Sjb return (error); 837179237Sjb} 838