14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * CDDL HEADER START
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * The contents of this file are subject to the terms of the
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Common Development and Distribution License (the "License").
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * You may not use this file except in compliance with the License.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * or http://www.opensolaris.org/os/licensing.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * See the License for the specific language governing permissions
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * and limitations under the License.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * When distributing Covered Code, include this CDDL HEADER in each
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * If applicable, add the following below this CDDL HEADER, with the
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * fields enclosed by brackets "[]" replaced with your own identifying
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * information: Portions Copyright [yyyy] [name of copyright owner]
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * CDDL HEADER END
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Use is subject to license terms.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/modctl.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/sunddi.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/dtrace.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/kobj.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/stat.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/conf.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <vm/seg_kmem.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/stack.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/frame.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/dtrace_impl.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/cmn_err.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/sysmacros.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/privregs.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#include <sys/sdt_impl.h>
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#define SDT_PATCHVAL 0xf0
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#define SDT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & sdt_probetab_mask)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#define SDT_PROBETAB_SIZE 0x1000 /* 4k entries -- 16K total */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic dev_info_t *sdt_devi;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int sdt_verbose = 0;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic sdt_probe_t **sdt_probetab;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int sdt_probetab_size;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int sdt_probetab_mask;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync uintptr_t stack0, stack1, stack2, stack3, stack4;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int i = 0;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probe_t *sdt = sdt_probetab[SDT_ADDR2NDX(addr)];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#ifdef __amd64
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * On amd64, stack[0] contains the dereferenced stack pointer,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * stack[1] contains savfp, stack[2] contains savpc. We want
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * to step over these entries.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync i += 3;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#endif
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (; sdt != NULL; sdt = sdt->sdp_hashnext) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if ((uintptr_t)sdt->sdp_patchpoint == addr) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * When accessing the arguments on the stack, we must
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * protect against accessing beyond the stack. We can
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * safely set NOFAULT here -- we know that interrupts
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * are already disabled.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_CPUFLAG_SET(CPU_DTRACE_NOFAULT);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack0 = stack[i++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack1 = stack[i++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack2 = stack[i++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack3 = stack[i++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack4 = stack[i++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_CPUFLAG_CLEAR(CPU_DTRACE_NOFAULT |
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync CPU_DTRACE_BADADDR);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync dtrace_probe(sdt->sdp_id, stack0, stack1,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack2, stack3, stack4);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DTRACE_INVOP_NOP);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (0);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic void
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_provide_module(void *arg, struct modctl *ctl)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct module *mp = ctl->mod_mp;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync char *modname = ctl->mod_modname;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probedesc_t *sdpd;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probe_t *sdp, *old;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_provider_t *prov;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int len;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * One for all, and all for one: if we haven't yet registered all of
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * our providers, we'll refuse to provide anything.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (prov->sdtp_id == DTRACE_PROVNONE)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (mp->sdt_nprobes != 0 || (sdpd = mp->sdt_probes) == NULL)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (sdpd = mp->sdt_probes; sdpd != NULL; sdpd = sdpd->sdpd_next) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync char *name = sdpd->sdpd_name, *func, *nname;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int i, j;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_provider_t *prov;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ulong_t offs;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync dtrace_id_t id;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (prov = sdt_providers; prov->sdtp_prefix != NULL; prov++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync char *prefix = prov->sdtp_prefix;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (strncmp(name, prefix, strlen(prefix)) == 0) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync name += strlen(prefix);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync break;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nname = kmem_alloc(len = strlen(name) + 1, KM_SLEEP);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (i = 0, j = 0; name[j] != '\0'; i++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (name[j] == '_' && name[j + 1] == '_') {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nname[i] = '-';
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync j += 2;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync } else {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nname[i] = name[j++];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nname[i] = '\0';
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp = kmem_zalloc(sizeof (sdt_probe_t), KM_SLEEP);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_loadcnt = ctl->mod_loadcnt;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_ctl = ctl;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_name = nname;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_namelen = len;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_provider = prov;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync func = kobj_searchsym(mp, sdpd->sdpd_offset, &offs);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (func == NULL)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync func = "<unknown>";
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * We have our provider. Now create the probe.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if ((id = dtrace_probe_lookup(prov->sdtp_id, modname,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync func, nname)) != DTRACE_IDNONE) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync old = dtrace_probe_arg(prov->sdtp_id, id);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ASSERT(old != NULL);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_next = old->sdp_next;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_id = id;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync old->sdp_next = sdp;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync } else {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_id = dtrace_probe_create(prov->sdtp_id,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync modname, func, nname, 3, sdp);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync mp->sdt_nprobes++;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_hashnext =
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab[SDT_ADDR2NDX(sdpd->sdpd_offset)];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab[SDT_ADDR2NDX(sdpd->sdpd_offset)] = sdp;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_patchval = SDT_PATCHVAL;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_patchpoint = (uint8_t *)sdpd->sdpd_offset;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_savedval = *sdp->sdp_patchpoint;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic void
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_destroy(void *arg, dtrace_id_t id, void *parg)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probe_t *sdp = parg, *old, *last, *hash;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct modctl *ctl = sdp->sdp_ctl;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int ndx;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (ctl != NULL && ctl->mod_loadcnt == sdp->sdp_loadcnt) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if ((ctl->mod_loadcnt == sdp->sdp_loadcnt &&
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ctl->mod_loaded)) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ((struct module *)(ctl->mod_mp))->sdt_nprobes--;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync while (sdp != NULL) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync old = sdp;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Now we need to remove this probe from the sdt_probetab.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ndx = SDT_ADDR2NDX(sdp->sdp_patchpoint);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync last = NULL;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync hash = sdt_probetab[ndx];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync while (hash != sdp) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ASSERT(hash != NULL);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync last = hash;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync hash = hash->sdp_hashnext;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (last != NULL) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync last->sdp_hashnext = sdp->sdp_hashnext;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync } else {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab[ndx] = sdp->sdp_hashnext;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync kmem_free(sdp->sdp_name, sdp->sdp_namelen);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp = sdp->sdp_next;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync kmem_free(old, sizeof (sdt_probe_t));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_enable(void *arg, dtrace_id_t id, void *parg)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probe_t *sdp = parg;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct modctl *ctl = sdp->sdp_ctl;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ctl->mod_nenabled++;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * If this module has disappeared since we discovered its probes,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * refuse to enable it.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (!ctl->mod_loaded) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (sdt_verbose) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync cmn_err(CE_NOTE, "sdt is failing for probe %s "
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync "(module %s unloaded)",
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_name, ctl->mod_modname);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync goto err;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Now check that our modctl has the expected load count. If it
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * doesn't, this module must have been unloaded and reloaded -- and
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * we're not going to touch it.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (ctl->mod_loadcnt != sdp->sdp_loadcnt) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (sdt_verbose) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync cmn_err(CE_NOTE, "sdt is failing for probe %s "
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync "(module %s reloaded)",
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp->sdp_name, ctl->mod_modname);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync goto err;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync while (sdp != NULL) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *sdp->sdp_patchpoint = sdp->sdp_patchval;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp = sdp->sdp_next;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncerr:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (0);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic void
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_disable(void *arg, dtrace_id_t id, void *parg)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probe_t *sdp = parg;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct modctl *ctl = sdp->sdp_ctl;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ctl->mod_nenabled--;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (!ctl->mod_loaded || ctl->mod_loadcnt != sdp->sdp_loadcnt)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync goto err;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync while (sdp != NULL) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *sdp->sdp_patchpoint = sdp->sdp_savedval;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdp = sdp->sdp_next;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncerr:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncuint64_t
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_getarg(void *arg, dtrace_id_t id, void *parg, int argno, int aframes)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync uintptr_t val;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct frame *fp = (struct frame *)dtrace_getfp();
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync uintptr_t *stack;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int i;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#if defined(__amd64)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * A total of 6 arguments are passed via registers; any argument with
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * index of 5 or lower is therefore in a register.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int inreg = 5;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#endif
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (i = 1; i <= aframes; i++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync fp = (struct frame *)(fp->fr_savfp);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (fp->fr_savpc == (pc_t)dtrace_invop_callsite) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#if !defined(__amd64)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * If we pass through the invalid op handler, we will
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * use the pointer that it passed to the stack as the
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * second argument to dtrace_invop() as the pointer to
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * the stack.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack = ((uintptr_t **)&fp[1])[1];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#else
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * In the case of amd64, we will use the pointer to the
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * regs structure that was pushed when we took the
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * trap. To get this structure, we must increment
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * beyond the frame structure. If the argument that
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * we're seeking is passed on the stack, we'll pull
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * the true stack pointer out of the saved registers
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * and decrement our argument by the number of
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * arguments passed in registers; if the argument
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * we're seeking is passed in regsiters, we can just
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * load it directly.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync struct regs *rp = (struct regs *)((uintptr_t)&fp[1] +
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sizeof (uintptr_t));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (argno <= inreg) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack = (uintptr_t *)&rp->r_rdi;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync } else {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack = (uintptr_t *)(rp->r_rsp);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync argno -= (inreg + 1);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#endif
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync goto load;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * We know that we did not come through a trap to get into
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * dtrace_probe() -- the provider simply called dtrace_probe()
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * directly. As this is the case, we need to shift the argument
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * that we're looking for: the probe ID is the first argument to
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * dtrace_probe(), so the argument n will actually be found where
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * one would expect to find argument (n + 1).
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync argno++;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#if defined(__amd64)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (argno <= inreg) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync /*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * This shouldn't happen. If the argument is passed in a
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * register then it should have been, well, passed in a
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * register...
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_CPUFLAG_SET(CPU_DTRACE_ILLOP);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (0);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync argno -= (inreg + 1);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync#endif
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync stack = (uintptr_t *)&fp[1];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncload:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_CPUFLAG_SET(CPU_DTRACE_NOFAULT);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync val = stack[argno];
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_CPUFLAG_CLEAR(CPU_DTRACE_NOFAULT);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (val);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic dtrace_pops_t sdt_pops = {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_provide_module,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_enable,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_disable,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_getargdesc,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_getarg,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_destroy
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync};
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_provider_t *prov;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (ddi_create_minor_node(devi, "sdt", S_IFCHR,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync 0, DDI_PSEUDO, NULL) == DDI_FAILURE) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync cmn_err(CE_NOTE, "/dev/sdt couldn't create minor node");
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ddi_remove_minor_node(devi, NULL);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_FAILURE);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ddi_report_dev(devi);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_devi = devi;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (sdt_probetab_size == 0)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab_size = SDT_PROBETAB_SIZE;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab_mask = sdt_probetab_size - 1;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_probetab =
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync kmem_zalloc(sdt_probetab_size * sizeof (sdt_probe_t *), KM_SLEEP);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync dtrace_invop_add(sdt_invop);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (dtrace_register(prov->sdtp_name, prov->sdtp_attr,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DTRACE_PRIV_KERNEL, NULL,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync &sdt_pops, prov, &prov->sdtp_id) != 0) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync cmn_err(CE_WARN, "failed to register sdt provider %s",
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync prov->sdtp_name);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_SUCCESS);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_provider_t *prov;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync switch (cmd) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync case DDI_DETACH:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync break;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync case DDI_SUSPEND:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_SUCCESS);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync default:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_FAILURE);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (prov->sdtp_id != DTRACE_PROVNONE) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync if (dtrace_unregister(prov->sdtp_id) != 0)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_FAILURE);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync prov->sdtp_id = DTRACE_PROVNONE;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync dtrace_invop_remove(sdt_invop);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync kmem_free(sdt_probetab, sdt_probetab_size * sizeof (sdt_probe_t *));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (DDI_SUCCESS);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync int error;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync switch (infocmd) {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync case DDI_INFO_DEVT2DEVINFO:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *result = (void *)sdt_devi;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync error = DDI_SUCCESS;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync break;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync case DDI_INFO_DEVT2INSTANCE:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync *result = (void *)0;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync error = DDI_SUCCESS;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync break;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync default:
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync error = DDI_FAILURE;
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync }
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (error);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*ARGSUSED*/
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic int
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncsdt_open(dev_t *devp, int flag, int otyp, cred_t *cred_p)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (0);
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic struct cb_ops sdt_cb_ops = {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_open, /* open */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* close */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nulldev, /* strategy */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nulldev, /* print */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* dump */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* read */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* write */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* ioctl */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* devmap */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* mmap */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* segmap */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nochpoll, /* poll */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ddi_prop_op, /* cb_prop_op */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync 0, /* streamtab */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync D_NEW | D_MP /* Driver compatibility flag */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync};
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic struct dev_ops sdt_ops = {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync DEVO_REV, /* devo_rev, */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync 0, /* refcnt */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_info, /* get_dev_info */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nulldev, /* identify */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nulldev, /* probe */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_attach, /* attach */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync sdt_detach, /* detach */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* reset */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync &sdt_cb_ops, /* driver operations */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL, /* bus operations */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync nodev, /* dev power */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync ddi_quiesce_not_needed, /* quiesce */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync};
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync/*
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync * Module linkage information for the kernel.
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic struct modldrv modldrv = {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync &mod_driverops, /* module type (this is a pseudo driver) */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync "Statically Defined Tracing", /* name of module */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync &sdt_ops, /* driver ops */
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync};
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncstatic struct modlinkage modlinkage = {
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync MODREV_1,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync (void *)&modldrv,
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync NULL
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync};
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncint
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync_init(void)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (mod_install(&modlinkage));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncint
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync_info(struct modinfo *modinfop)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (mod_info(&modlinkage, modinfop));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsyncint
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync_fini(void)
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync{
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync return (mod_remove(&modlinkage));
14ea49401f3c8c61422aefbda43809e275f60c6cvboxsync}