17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*b8fac8e1Sjhaslam * Common Development and Distribution License (the "License").
6*b8fac8e1Sjhaslam * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*b8fac8e1Sjhaslam * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
277c478bd9Sstevel@tonic-gate
287c478bd9Sstevel@tonic-gate #include <stddef.h>
297c478bd9Sstevel@tonic-gate #include <stdlib.h>
307c478bd9Sstevel@tonic-gate #include <strings.h>
317c478bd9Sstevel@tonic-gate #include <errno.h>
327c478bd9Sstevel@tonic-gate #include <unistd.h>
337c478bd9Sstevel@tonic-gate #include <assert.h>
347c478bd9Sstevel@tonic-gate #include <alloca.h>
357c478bd9Sstevel@tonic-gate
361a7c1b72Smws #include <dt_impl.h>
371a7c1b72Smws #include <dt_program.h>
381a7c1b72Smws
397c478bd9Sstevel@tonic-gate static const char _dt_errprog[] =
407c478bd9Sstevel@tonic-gate "dtrace:::ERROR"
417c478bd9Sstevel@tonic-gate "{"
427c478bd9Sstevel@tonic-gate " trace(arg1);"
437c478bd9Sstevel@tonic-gate " trace(arg2);"
447c478bd9Sstevel@tonic-gate " trace(arg3);"
457c478bd9Sstevel@tonic-gate " trace(arg4);"
467c478bd9Sstevel@tonic-gate " trace(arg5);"
477c478bd9Sstevel@tonic-gate "}";
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate int
dtrace_handle_err(dtrace_hdl_t * dtp,dtrace_handle_err_f * hdlr,void * arg)507c478bd9Sstevel@tonic-gate dtrace_handle_err(dtrace_hdl_t *dtp, dtrace_handle_err_f *hdlr, void *arg)
517c478bd9Sstevel@tonic-gate {
527c478bd9Sstevel@tonic-gate dtrace_prog_t *pgp = NULL;
537c478bd9Sstevel@tonic-gate dt_stmt_t *stp;
547c478bd9Sstevel@tonic-gate dtrace_ecbdesc_t *edp;
557c478bd9Sstevel@tonic-gate
567c478bd9Sstevel@tonic-gate /*
577c478bd9Sstevel@tonic-gate * We don't currently support multiple error handlers.
587c478bd9Sstevel@tonic-gate */
597c478bd9Sstevel@tonic-gate if (dtp->dt_errhdlr != NULL)
607c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EALREADY));
617c478bd9Sstevel@tonic-gate
627c478bd9Sstevel@tonic-gate /*
637c478bd9Sstevel@tonic-gate * If the DTRACEOPT_GRABANON is enabled, the anonymous enabling will
647c478bd9Sstevel@tonic-gate * already have a dtrace:::ERROR probe enabled; save 'hdlr' and 'arg'
657c478bd9Sstevel@tonic-gate * but do not bother compiling and enabling _dt_errprog.
667c478bd9Sstevel@tonic-gate */
677c478bd9Sstevel@tonic-gate if (dtp->dt_options[DTRACEOPT_GRABANON] != DTRACEOPT_UNSET)
687c478bd9Sstevel@tonic-gate goto out;
697c478bd9Sstevel@tonic-gate
707c478bd9Sstevel@tonic-gate if ((pgp = dtrace_program_strcompile(dtp, _dt_errprog,
717c478bd9Sstevel@tonic-gate DTRACE_PROBESPEC_NAME, DTRACE_C_ZDEFS, 0, NULL)) == NULL)
727c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, dtrace_errno(dtp)));
737c478bd9Sstevel@tonic-gate
747c478bd9Sstevel@tonic-gate stp = dt_list_next(&pgp->dp_stmts);
757c478bd9Sstevel@tonic-gate assert(stp != NULL);
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate edp = stp->ds_desc->dtsd_ecbdesc;
787c478bd9Sstevel@tonic-gate assert(edp != NULL);
797c478bd9Sstevel@tonic-gate edp->dted_uarg = DT_ECB_ERROR;
807c478bd9Sstevel@tonic-gate
817c478bd9Sstevel@tonic-gate out:
827c478bd9Sstevel@tonic-gate dtp->dt_errhdlr = hdlr;
837c478bd9Sstevel@tonic-gate dtp->dt_errarg = arg;
847c478bd9Sstevel@tonic-gate dtp->dt_errprog = pgp;
857c478bd9Sstevel@tonic-gate
867c478bd9Sstevel@tonic-gate return (0);
877c478bd9Sstevel@tonic-gate }
887c478bd9Sstevel@tonic-gate
897c478bd9Sstevel@tonic-gate int
dtrace_handle_drop(dtrace_hdl_t * dtp,dtrace_handle_drop_f * hdlr,void * arg)907c478bd9Sstevel@tonic-gate dtrace_handle_drop(dtrace_hdl_t *dtp, dtrace_handle_drop_f *hdlr, void *arg)
917c478bd9Sstevel@tonic-gate {
927c478bd9Sstevel@tonic-gate if (dtp->dt_drophdlr != NULL)
937c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EALREADY));
947c478bd9Sstevel@tonic-gate
957c478bd9Sstevel@tonic-gate dtp->dt_drophdlr = hdlr;
967c478bd9Sstevel@tonic-gate dtp->dt_droparg = arg;
977c478bd9Sstevel@tonic-gate
987c478bd9Sstevel@tonic-gate return (0);
997c478bd9Sstevel@tonic-gate }
1007c478bd9Sstevel@tonic-gate
1017c478bd9Sstevel@tonic-gate int
dtrace_handle_proc(dtrace_hdl_t * dtp,dtrace_handle_proc_f * hdlr,void * arg)1027c478bd9Sstevel@tonic-gate dtrace_handle_proc(dtrace_hdl_t *dtp, dtrace_handle_proc_f *hdlr, void *arg)
1037c478bd9Sstevel@tonic-gate {
1047c478bd9Sstevel@tonic-gate if (dtp->dt_prochdlr != NULL)
1057c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EALREADY));
1067c478bd9Sstevel@tonic-gate
1077c478bd9Sstevel@tonic-gate dtp->dt_prochdlr = hdlr;
1087c478bd9Sstevel@tonic-gate dtp->dt_procarg = arg;
1097c478bd9Sstevel@tonic-gate
1107c478bd9Sstevel@tonic-gate return (0);
1117c478bd9Sstevel@tonic-gate }
1127c478bd9Sstevel@tonic-gate
1137c478bd9Sstevel@tonic-gate int
dtrace_handle_buffered(dtrace_hdl_t * dtp,dtrace_handle_buffered_f * hdlr,void * arg)1147c478bd9Sstevel@tonic-gate dtrace_handle_buffered(dtrace_hdl_t *dtp, dtrace_handle_buffered_f *hdlr,
1157c478bd9Sstevel@tonic-gate void *arg)
1167c478bd9Sstevel@tonic-gate {
1177c478bd9Sstevel@tonic-gate if (dtp->dt_bufhdlr != NULL)
1187c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EALREADY));
1197c478bd9Sstevel@tonic-gate
1207c478bd9Sstevel@tonic-gate if (hdlr == NULL)
1217c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EINVAL));
1227c478bd9Sstevel@tonic-gate
1237c478bd9Sstevel@tonic-gate dtp->dt_bufhdlr = hdlr;
1247c478bd9Sstevel@tonic-gate dtp->dt_bufarg = arg;
1257c478bd9Sstevel@tonic-gate
1267c478bd9Sstevel@tonic-gate return (0);
1277c478bd9Sstevel@tonic-gate }
1287c478bd9Sstevel@tonic-gate
129a1b5e537Sbmc int
dtrace_handle_setopt(dtrace_hdl_t * dtp,dtrace_handle_setopt_f * hdlr,void * arg)130a1b5e537Sbmc dtrace_handle_setopt(dtrace_hdl_t *dtp, dtrace_handle_setopt_f *hdlr,
131a1b5e537Sbmc void *arg)
132a1b5e537Sbmc {
133a1b5e537Sbmc if (hdlr == NULL)
134a1b5e537Sbmc return (dt_set_errno(dtp, EINVAL));
135a1b5e537Sbmc
136a1b5e537Sbmc dtp->dt_setopthdlr = hdlr;
137a1b5e537Sbmc dtp->dt_setoptarg = arg;
138a1b5e537Sbmc
139a1b5e537Sbmc return (0);
140a1b5e537Sbmc }
141a1b5e537Sbmc
1427c478bd9Sstevel@tonic-gate #define DT_REC(type, ndx) *((type *)((uintptr_t)data->dtpda_data + \
1437c478bd9Sstevel@tonic-gate epd->dtepd_rec[(ndx)].dtrd_offset))
1447c478bd9Sstevel@tonic-gate
1457c478bd9Sstevel@tonic-gate static int
dt_handle_err(dtrace_hdl_t * dtp,dtrace_probedata_t * data)1467c478bd9Sstevel@tonic-gate dt_handle_err(dtrace_hdl_t *dtp, dtrace_probedata_t *data)
1477c478bd9Sstevel@tonic-gate {
1487c478bd9Sstevel@tonic-gate dtrace_eprobedesc_t *epd = data->dtpda_edesc, *errepd;
1497c478bd9Sstevel@tonic-gate dtrace_probedesc_t *pd = data->dtpda_pdesc, *errpd;
1507c478bd9Sstevel@tonic-gate dtrace_errdata_t err;
1517c478bd9Sstevel@tonic-gate dtrace_epid_t epid;
1527c478bd9Sstevel@tonic-gate
1537c478bd9Sstevel@tonic-gate char where[30];
1547c478bd9Sstevel@tonic-gate char details[30];
1557c478bd9Sstevel@tonic-gate char offinfo[30];
1567c478bd9Sstevel@tonic-gate const int slop = 80;
1577c478bd9Sstevel@tonic-gate const char *faultstr;
1587c478bd9Sstevel@tonic-gate char *str;
1597c478bd9Sstevel@tonic-gate int len;
1607c478bd9Sstevel@tonic-gate
1617c478bd9Sstevel@tonic-gate assert(epd->dtepd_uarg == DT_ECB_ERROR);
1627c478bd9Sstevel@tonic-gate
1637c478bd9Sstevel@tonic-gate if (epd->dtepd_nrecs != 5 || strcmp(pd->dtpd_provider, "dtrace") != 0 ||
1647c478bd9Sstevel@tonic-gate strcmp(pd->dtpd_name, "ERROR") != 0)
1657c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_BADERROR));
1667c478bd9Sstevel@tonic-gate
1677c478bd9Sstevel@tonic-gate /*
1687c478bd9Sstevel@tonic-gate * This is an error. We have the following items here: EPID,
1697c478bd9Sstevel@tonic-gate * faulting action, DIF offset, fault code and faulting address.
1707c478bd9Sstevel@tonic-gate */
1717c478bd9Sstevel@tonic-gate epid = (uint32_t)DT_REC(uint64_t, 0);
1727c478bd9Sstevel@tonic-gate
1737c478bd9Sstevel@tonic-gate if (dt_epid_lookup(dtp, epid, &errepd, &errpd) != 0)
1747c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_BADERROR));
1757c478bd9Sstevel@tonic-gate
1767c478bd9Sstevel@tonic-gate err.dteda_edesc = errepd;
1777c478bd9Sstevel@tonic-gate err.dteda_pdesc = errpd;
1787c478bd9Sstevel@tonic-gate err.dteda_cpu = data->dtpda_cpu;
1797c478bd9Sstevel@tonic-gate err.dteda_action = (int)DT_REC(uint64_t, 1);
1807c478bd9Sstevel@tonic-gate err.dteda_offset = (int)DT_REC(uint64_t, 2);
1817c478bd9Sstevel@tonic-gate err.dteda_fault = (int)DT_REC(uint64_t, 3);
1827c478bd9Sstevel@tonic-gate err.dteda_addr = DT_REC(uint64_t, 4);
1837c478bd9Sstevel@tonic-gate
1847c478bd9Sstevel@tonic-gate faultstr = dtrace_faultstr(dtp, err.dteda_fault);
1857c478bd9Sstevel@tonic-gate len = sizeof (where) + sizeof (offinfo) + strlen(faultstr) +
1867c478bd9Sstevel@tonic-gate strlen(errpd->dtpd_provider) + strlen(errpd->dtpd_mod) +
1877c478bd9Sstevel@tonic-gate strlen(errpd->dtpd_name) + strlen(errpd->dtpd_func) +
1887c478bd9Sstevel@tonic-gate slop;
1897c478bd9Sstevel@tonic-gate
1907c478bd9Sstevel@tonic-gate str = (char *)alloca(len);
1917c478bd9Sstevel@tonic-gate
1927c478bd9Sstevel@tonic-gate if (err.dteda_action == 0) {
1937c478bd9Sstevel@tonic-gate (void) sprintf(where, "predicate");
1947c478bd9Sstevel@tonic-gate } else {
1957c478bd9Sstevel@tonic-gate (void) sprintf(where, "action #%d", err.dteda_action);
1967c478bd9Sstevel@tonic-gate }
1977c478bd9Sstevel@tonic-gate
1987c478bd9Sstevel@tonic-gate if (err.dteda_offset != -1) {
1997c478bd9Sstevel@tonic-gate (void) sprintf(offinfo, " at DIF offset %d", err.dteda_offset);
2007c478bd9Sstevel@tonic-gate } else {
2017c478bd9Sstevel@tonic-gate offinfo[0] = 0;
2027c478bd9Sstevel@tonic-gate }
2037c478bd9Sstevel@tonic-gate
2047c478bd9Sstevel@tonic-gate switch (err.dteda_fault) {
2057c478bd9Sstevel@tonic-gate case DTRACEFLT_BADADDR:
2067c478bd9Sstevel@tonic-gate case DTRACEFLT_BADALIGN:
207*b8fac8e1Sjhaslam case DTRACEFLT_BADSTACK:
2087c478bd9Sstevel@tonic-gate (void) sprintf(details, " (0x%llx)",
2097c478bd9Sstevel@tonic-gate (u_longlong_t)err.dteda_addr);
2107c478bd9Sstevel@tonic-gate break;
2117c478bd9Sstevel@tonic-gate
2127c478bd9Sstevel@tonic-gate default:
2137c478bd9Sstevel@tonic-gate details[0] = 0;
2147c478bd9Sstevel@tonic-gate }
2157c478bd9Sstevel@tonic-gate
2167c478bd9Sstevel@tonic-gate (void) snprintf(str, len, "error on enabled probe ID %u "
2177c478bd9Sstevel@tonic-gate "(ID %u: %s:%s:%s:%s): %s%s in %s%s\n",
2187c478bd9Sstevel@tonic-gate epid, errpd->dtpd_id, errpd->dtpd_provider,
2197c478bd9Sstevel@tonic-gate errpd->dtpd_mod, errpd->dtpd_func,
2207c478bd9Sstevel@tonic-gate errpd->dtpd_name, dtrace_faultstr(dtp, err.dteda_fault),
2217c478bd9Sstevel@tonic-gate details, where, offinfo);
2227c478bd9Sstevel@tonic-gate
2237c478bd9Sstevel@tonic-gate err.dteda_msg = str;
2247c478bd9Sstevel@tonic-gate
2257c478bd9Sstevel@tonic-gate if (dtp->dt_errhdlr == NULL)
2267c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_ERRABORT));
2277c478bd9Sstevel@tonic-gate
2287c478bd9Sstevel@tonic-gate if ((*dtp->dt_errhdlr)(&err, dtp->dt_errarg) == DTRACE_HANDLE_ABORT)
2297c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_ERRABORT));
2307c478bd9Sstevel@tonic-gate
2317c478bd9Sstevel@tonic-gate return (0);
2327c478bd9Sstevel@tonic-gate }
2337c478bd9Sstevel@tonic-gate
2347c478bd9Sstevel@tonic-gate int
dt_handle_liberr(dtrace_hdl_t * dtp,const dtrace_probedata_t * data,const char * faultstr)2357c478bd9Sstevel@tonic-gate dt_handle_liberr(dtrace_hdl_t *dtp, const dtrace_probedata_t *data,
2367c478bd9Sstevel@tonic-gate const char *faultstr)
2377c478bd9Sstevel@tonic-gate {
2387c478bd9Sstevel@tonic-gate dtrace_probedesc_t *errpd = data->dtpda_pdesc;
2397c478bd9Sstevel@tonic-gate dtrace_errdata_t err;
2407c478bd9Sstevel@tonic-gate const int slop = 80;
2417c478bd9Sstevel@tonic-gate char *str;
2427c478bd9Sstevel@tonic-gate int len;
2437c478bd9Sstevel@tonic-gate
2447c478bd9Sstevel@tonic-gate err.dteda_edesc = data->dtpda_edesc;
2457c478bd9Sstevel@tonic-gate err.dteda_pdesc = errpd;
2467c478bd9Sstevel@tonic-gate err.dteda_cpu = data->dtpda_cpu;
2477c478bd9Sstevel@tonic-gate err.dteda_action = -1;
2487c478bd9Sstevel@tonic-gate err.dteda_offset = -1;
2497c478bd9Sstevel@tonic-gate err.dteda_fault = DTRACEFLT_LIBRARY;
2507c478bd9Sstevel@tonic-gate err.dteda_addr = NULL;
2517c478bd9Sstevel@tonic-gate
2527c478bd9Sstevel@tonic-gate len = strlen(faultstr) +
2537c478bd9Sstevel@tonic-gate strlen(errpd->dtpd_provider) + strlen(errpd->dtpd_mod) +
2547c478bd9Sstevel@tonic-gate strlen(errpd->dtpd_name) + strlen(errpd->dtpd_func) +
2557c478bd9Sstevel@tonic-gate slop;
2567c478bd9Sstevel@tonic-gate
2577c478bd9Sstevel@tonic-gate str = alloca(len);
2587c478bd9Sstevel@tonic-gate
2597c478bd9Sstevel@tonic-gate (void) snprintf(str, len, "error on enabled probe ID %u "
2607c478bd9Sstevel@tonic-gate "(ID %u: %s:%s:%s:%s): %s\n",
2617c478bd9Sstevel@tonic-gate data->dtpda_edesc->dtepd_epid,
2627c478bd9Sstevel@tonic-gate errpd->dtpd_id, errpd->dtpd_provider,
2637c478bd9Sstevel@tonic-gate errpd->dtpd_mod, errpd->dtpd_func,
2647c478bd9Sstevel@tonic-gate errpd->dtpd_name, faultstr);
2657c478bd9Sstevel@tonic-gate
2667c478bd9Sstevel@tonic-gate err.dteda_msg = str;
2677c478bd9Sstevel@tonic-gate
2687c478bd9Sstevel@tonic-gate if (dtp->dt_errhdlr == NULL)
2697c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_ERRABORT));
2707c478bd9Sstevel@tonic-gate
2717c478bd9Sstevel@tonic-gate if ((*dtp->dt_errhdlr)(&err, dtp->dt_errarg) == DTRACE_HANDLE_ABORT)
2727c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_ERRABORT));
2737c478bd9Sstevel@tonic-gate
2747c478bd9Sstevel@tonic-gate return (0);
2757c478bd9Sstevel@tonic-gate }
2767c478bd9Sstevel@tonic-gate
277a1b5e537Sbmc #define DROPTAG(x) x, #x
278a1b5e537Sbmc
279a1b5e537Sbmc static const struct {
280a1b5e537Sbmc dtrace_dropkind_t dtdrg_kind;
281a1b5e537Sbmc char *dtdrg_tag;
282a1b5e537Sbmc } _dt_droptags[] = {
283a1b5e537Sbmc { DROPTAG(DTRACEDROP_PRINCIPAL) },
284a1b5e537Sbmc { DROPTAG(DTRACEDROP_AGGREGATION) },
285a1b5e537Sbmc { DROPTAG(DTRACEDROP_DYNAMIC) },
286a1b5e537Sbmc { DROPTAG(DTRACEDROP_DYNRINSE) },
287a1b5e537Sbmc { DROPTAG(DTRACEDROP_DYNDIRTY) },
288a1b5e537Sbmc { DROPTAG(DTRACEDROP_SPEC) },
289a1b5e537Sbmc { DROPTAG(DTRACEDROP_SPECBUSY) },
290a1b5e537Sbmc { DROPTAG(DTRACEDROP_SPECUNAVAIL) },
291a1b5e537Sbmc { DROPTAG(DTRACEDROP_DBLERROR) },
292a1b5e537Sbmc { DROPTAG(DTRACEDROP_STKSTROVERFLOW) },
293a1b5e537Sbmc { 0, NULL }
294a1b5e537Sbmc };
295a1b5e537Sbmc
296a1b5e537Sbmc static const char *
dt_droptag(dtrace_dropkind_t kind)297a1b5e537Sbmc dt_droptag(dtrace_dropkind_t kind)
298a1b5e537Sbmc {
299a1b5e537Sbmc int i;
300a1b5e537Sbmc
301a1b5e537Sbmc for (i = 0; _dt_droptags[i].dtdrg_tag != NULL; i++) {
302a1b5e537Sbmc if (_dt_droptags[i].dtdrg_kind == kind)
303a1b5e537Sbmc return (_dt_droptags[i].dtdrg_tag);
304a1b5e537Sbmc }
305a1b5e537Sbmc
306a1b5e537Sbmc return ("DTRACEDROP_UNKNOWN");
307a1b5e537Sbmc }
308a1b5e537Sbmc
3097c478bd9Sstevel@tonic-gate int
dt_handle_cpudrop(dtrace_hdl_t * dtp,processorid_t cpu,dtrace_dropkind_t what,uint64_t howmany)3107c478bd9Sstevel@tonic-gate dt_handle_cpudrop(dtrace_hdl_t *dtp, processorid_t cpu,
3117c478bd9Sstevel@tonic-gate dtrace_dropkind_t what, uint64_t howmany)
3127c478bd9Sstevel@tonic-gate {
3137c478bd9Sstevel@tonic-gate dtrace_dropdata_t drop;
314a1b5e537Sbmc char str[80], *s;
315a1b5e537Sbmc int size;
3167c478bd9Sstevel@tonic-gate
3177c478bd9Sstevel@tonic-gate assert(what == DTRACEDROP_PRINCIPAL || what == DTRACEDROP_AGGREGATION);
3187c478bd9Sstevel@tonic-gate
3197c478bd9Sstevel@tonic-gate bzero(&drop, sizeof (drop));
3207c478bd9Sstevel@tonic-gate drop.dtdda_handle = dtp;
3217c478bd9Sstevel@tonic-gate drop.dtdda_cpu = cpu;
3227c478bd9Sstevel@tonic-gate drop.dtdda_kind = what;
3237c478bd9Sstevel@tonic-gate drop.dtdda_drops = howmany;
3247c478bd9Sstevel@tonic-gate drop.dtdda_msg = str;
3257c478bd9Sstevel@tonic-gate
326a1b5e537Sbmc if (dtp->dt_droptags) {
327a1b5e537Sbmc (void) snprintf(str, sizeof (str), "[%s] ", dt_droptag(what));
328a1b5e537Sbmc s = &str[strlen(str)];
329a1b5e537Sbmc size = sizeof (str) - (s - str);
330a1b5e537Sbmc } else {
331a1b5e537Sbmc s = str;
332a1b5e537Sbmc size = sizeof (str);
333a1b5e537Sbmc }
334a1b5e537Sbmc
335a1b5e537Sbmc (void) snprintf(s, size, "%llu %sdrop%s on CPU %d\n",
3367c478bd9Sstevel@tonic-gate howmany, what == DTRACEDROP_PRINCIPAL ? "" : "aggregation ",
3377c478bd9Sstevel@tonic-gate howmany > 1 ? "s" : "", cpu);
3387c478bd9Sstevel@tonic-gate
3397c478bd9Sstevel@tonic-gate if (dtp->dt_drophdlr == NULL)
3407c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_DROPABORT));
3417c478bd9Sstevel@tonic-gate
3427c478bd9Sstevel@tonic-gate if ((*dtp->dt_drophdlr)(&drop, dtp->dt_droparg) == DTRACE_HANDLE_ABORT)
3437c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_DROPABORT));
3447c478bd9Sstevel@tonic-gate
3457c478bd9Sstevel@tonic-gate return (0);
3467c478bd9Sstevel@tonic-gate }
3477c478bd9Sstevel@tonic-gate
3487c478bd9Sstevel@tonic-gate static const struct {
3497c478bd9Sstevel@tonic-gate dtrace_dropkind_t dtdrt_kind;
3507c478bd9Sstevel@tonic-gate uintptr_t dtdrt_offset;
3517c478bd9Sstevel@tonic-gate const char *dtdrt_str;
3527c478bd9Sstevel@tonic-gate const char *dtdrt_msg;
3537c478bd9Sstevel@tonic-gate } _dt_droptab[] = {
3547c478bd9Sstevel@tonic-gate { DTRACEDROP_DYNAMIC,
3557c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_dyndrops),
3567c478bd9Sstevel@tonic-gate "dynamic variable drop" },
3577c478bd9Sstevel@tonic-gate
3587c478bd9Sstevel@tonic-gate { DTRACEDROP_DYNRINSE,
3597c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_dyndrops_rinsing),
3607c478bd9Sstevel@tonic-gate "dynamic variable drop", " with non-empty rinsing list" },
3617c478bd9Sstevel@tonic-gate
3627c478bd9Sstevel@tonic-gate { DTRACEDROP_DYNDIRTY,
3637c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_dyndrops_dirty),
3647c478bd9Sstevel@tonic-gate "dynamic variable drop", " with non-empty dirty list" },
3657c478bd9Sstevel@tonic-gate
3667c478bd9Sstevel@tonic-gate { DTRACEDROP_SPEC,
3677c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_specdrops),
3687c478bd9Sstevel@tonic-gate "speculative drop" },
3697c478bd9Sstevel@tonic-gate
3707c478bd9Sstevel@tonic-gate { DTRACEDROP_SPECBUSY,
3717c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_specdrops_busy),
3727c478bd9Sstevel@tonic-gate "failed speculation", " (available buffer(s) still busy)" },
3737c478bd9Sstevel@tonic-gate
3747c478bd9Sstevel@tonic-gate { DTRACEDROP_SPECUNAVAIL,
3757c478bd9Sstevel@tonic-gate offsetof(dtrace_status_t, dtst_specdrops_unavail),
3767c478bd9Sstevel@tonic-gate "failed speculation", " (no speculative buffer available)" },
3777c478bd9Sstevel@tonic-gate
378a1b5e537Sbmc { DTRACEDROP_STKSTROVERFLOW,
379a1b5e537Sbmc offsetof(dtrace_status_t, dtst_stkstroverflows),
380a1b5e537Sbmc "jstack()/ustack() string table overflow" },
381a1b5e537Sbmc
382a1b5e537Sbmc { DTRACEDROP_DBLERROR,
383a1b5e537Sbmc offsetof(dtrace_status_t, dtst_dblerrors),
384a1b5e537Sbmc "error", " in ERROR probe enabling" },
385a1b5e537Sbmc
3867c478bd9Sstevel@tonic-gate { 0, 0, NULL }
3877c478bd9Sstevel@tonic-gate };
3887c478bd9Sstevel@tonic-gate
3897c478bd9Sstevel@tonic-gate int
dt_handle_status(dtrace_hdl_t * dtp,dtrace_status_t * old,dtrace_status_t * new)3907c478bd9Sstevel@tonic-gate dt_handle_status(dtrace_hdl_t *dtp, dtrace_status_t *old, dtrace_status_t *new)
3917c478bd9Sstevel@tonic-gate {
3927c478bd9Sstevel@tonic-gate dtrace_dropdata_t drop;
393a1b5e537Sbmc char str[80], *s;
3947c478bd9Sstevel@tonic-gate uintptr_t base = (uintptr_t)new, obase = (uintptr_t)old;
395a1b5e537Sbmc int i, size;
3967c478bd9Sstevel@tonic-gate
3977c478bd9Sstevel@tonic-gate bzero(&drop, sizeof (drop));
3987c478bd9Sstevel@tonic-gate drop.dtdda_handle = dtp;
3997c478bd9Sstevel@tonic-gate drop.dtdda_cpu = DTRACE_CPUALL;
4007c478bd9Sstevel@tonic-gate drop.dtdda_msg = str;
4017c478bd9Sstevel@tonic-gate
4027c478bd9Sstevel@tonic-gate /*
4037c478bd9Sstevel@tonic-gate * First, check to see if we've been killed -- in which case we abort.
4047c478bd9Sstevel@tonic-gate */
4057c478bd9Sstevel@tonic-gate if (new->dtst_killed && !old->dtst_killed)
4067c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_BRICKED));
4077c478bd9Sstevel@tonic-gate
4087c478bd9Sstevel@tonic-gate for (i = 0; _dt_droptab[i].dtdrt_str != NULL; i++) {
4097c478bd9Sstevel@tonic-gate uintptr_t naddr = base + _dt_droptab[i].dtdrt_offset;
4107c478bd9Sstevel@tonic-gate uintptr_t oaddr = obase + _dt_droptab[i].dtdrt_offset;
4117c478bd9Sstevel@tonic-gate
4127c478bd9Sstevel@tonic-gate uint64_t nval = *((uint64_t *)naddr);
4137c478bd9Sstevel@tonic-gate uint64_t oval = *((uint64_t *)oaddr);
4147c478bd9Sstevel@tonic-gate
4157c478bd9Sstevel@tonic-gate if (nval == oval)
4167c478bd9Sstevel@tonic-gate continue;
4177c478bd9Sstevel@tonic-gate
418a1b5e537Sbmc if (dtp->dt_droptags) {
419a1b5e537Sbmc (void) snprintf(str, sizeof (str), "[%s] ",
420a1b5e537Sbmc dt_droptag(_dt_droptab[i].dtdrt_kind));
421a1b5e537Sbmc s = &str[strlen(str)];
422a1b5e537Sbmc size = sizeof (str) - (s - str);
423a1b5e537Sbmc } else {
424a1b5e537Sbmc s = str;
425a1b5e537Sbmc size = sizeof (str);
426a1b5e537Sbmc }
427a1b5e537Sbmc
428a1b5e537Sbmc (void) snprintf(s, size, "%llu %s%s%s\n", nval - oval,
4297c478bd9Sstevel@tonic-gate _dt_droptab[i].dtdrt_str, (nval - oval > 1) ? "s" : "",
4307c478bd9Sstevel@tonic-gate _dt_droptab[i].dtdrt_msg != NULL ?
4317c478bd9Sstevel@tonic-gate _dt_droptab[i].dtdrt_msg : "");
4327c478bd9Sstevel@tonic-gate
4337c478bd9Sstevel@tonic-gate drop.dtdda_kind = _dt_droptab[i].dtdrt_kind;
4347c478bd9Sstevel@tonic-gate drop.dtdda_total = nval;
4357c478bd9Sstevel@tonic-gate drop.dtdda_drops = nval - oval;
4367c478bd9Sstevel@tonic-gate
4377c478bd9Sstevel@tonic-gate if (dtp->dt_drophdlr == NULL)
4387c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_DROPABORT));
4397c478bd9Sstevel@tonic-gate
4407c478bd9Sstevel@tonic-gate if ((*dtp->dt_drophdlr)(&drop,
4417c478bd9Sstevel@tonic-gate dtp->dt_droparg) == DTRACE_HANDLE_ABORT)
4427c478bd9Sstevel@tonic-gate return (dt_set_errno(dtp, EDT_DROPABORT));
4437c478bd9Sstevel@tonic-gate }
4447c478bd9Sstevel@tonic-gate
4457c478bd9Sstevel@tonic-gate return (0);
4467c478bd9Sstevel@tonic-gate }
4477c478bd9Sstevel@tonic-gate
4487c478bd9Sstevel@tonic-gate int
dt_handle_setopt(dtrace_hdl_t * dtp,dtrace_setoptdata_t * data)449a1b5e537Sbmc dt_handle_setopt(dtrace_hdl_t *dtp, dtrace_setoptdata_t *data)
450a1b5e537Sbmc {
451a1b5e537Sbmc void *arg = dtp->dt_setoptarg;
452a1b5e537Sbmc
453a1b5e537Sbmc if (dtp->dt_setopthdlr == NULL)
454a1b5e537Sbmc return (0);
455a1b5e537Sbmc
456a1b5e537Sbmc if ((*dtp->dt_setopthdlr)(data, arg) == DTRACE_HANDLE_ABORT)
457a1b5e537Sbmc return (dt_set_errno(dtp, EDT_DIRABORT));
458a1b5e537Sbmc
459a1b5e537Sbmc return (0);
460a1b5e537Sbmc }
461a1b5e537Sbmc
462a1b5e537Sbmc int
dt_handle(dtrace_hdl_t * dtp,dtrace_probedata_t * data)4637c478bd9Sstevel@tonic-gate dt_handle(dtrace_hdl_t *dtp, dtrace_probedata_t *data)
4647c478bd9Sstevel@tonic-gate {
4657c478bd9Sstevel@tonic-gate dtrace_eprobedesc_t *epd = data->dtpda_edesc;
4667c478bd9Sstevel@tonic-gate int rval;
4677c478bd9Sstevel@tonic-gate
4687c478bd9Sstevel@tonic-gate switch (epd->dtepd_uarg) {
4697c478bd9Sstevel@tonic-gate case DT_ECB_ERROR:
4707c478bd9Sstevel@tonic-gate rval = dt_handle_err(dtp, data);
4717c478bd9Sstevel@tonic-gate break;
4727c478bd9Sstevel@tonic-gate
4737c478bd9Sstevel@tonic-gate default:
4747c478bd9Sstevel@tonic-gate return (DTRACE_CONSUME_THIS);
4757c478bd9Sstevel@tonic-gate }
4767c478bd9Sstevel@tonic-gate
4777c478bd9Sstevel@tonic-gate if (rval == 0)
4787c478bd9Sstevel@tonic-gate return (DTRACE_CONSUME_NEXT);
4797c478bd9Sstevel@tonic-gate
4807c478bd9Sstevel@tonic-gate return (DTRACE_CONSUME_ERROR);
4817c478bd9Sstevel@tonic-gate }
482