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 25179237Sjbint dtrace_debug = 0; 26179237SjbTUNABLE_INT("debug.dtrace.debug", &dtrace_debug); 27179237SjbSYSCTL_INT(_debug_dtrace, OID_AUTO, debug, CTLFLAG_RW, &dtrace_debug, 0, ""); 28179237Sjb 29179237Sjb/* Report registered DTrace providers. */ 30179237Sjbstatic int 31179237Sjbsysctl_dtrace_providers(SYSCTL_HANDLER_ARGS) 32179237Sjb{ 33179237Sjb char *p_name = NULL; 34179237Sjb dtrace_provider_t 35179237Sjb *prov = dtrace_provider; 36179237Sjb int error = 0; 37179237Sjb size_t len = 0; 38179237Sjb 39179237Sjb mutex_enter(&dtrace_provider_lock); 40179237Sjb mutex_enter(&dtrace_lock); 41179237Sjb 42179237Sjb /* Compute the length of the space-separated provider name string. */ 43179237Sjb while (prov != NULL) { 44179237Sjb len += strlen(prov->dtpv_name) + 1; 45179237Sjb prov = prov->dtpv_next; 46179237Sjb } 47179237Sjb 48179237Sjb if ((p_name = kmem_alloc(len, KM_SLEEP)) == NULL) 49179237Sjb error = ENOMEM; 50179237Sjb else { 51179237Sjb /* Start with an empty string. */ 52179237Sjb *p_name = '\0'; 53179237Sjb 54179237Sjb /* Point to the first provider again. */ 55179237Sjb prov = dtrace_provider; 56179237Sjb 57179237Sjb /* Loop through the providers, appending the names. */ 58179237Sjb while (prov != NULL) { 59179237Sjb if (prov != dtrace_provider) 60179237Sjb (void) strlcat(p_name, " ", len); 61179237Sjb 62179237Sjb (void) strlcat(p_name, prov->dtpv_name, len); 63179237Sjb 64179237Sjb prov = prov->dtpv_next; 65179237Sjb } 66179237Sjb } 67179237Sjb 68179237Sjb mutex_exit(&dtrace_lock); 69179237Sjb mutex_exit(&dtrace_provider_lock); 70179237Sjb 71179237Sjb if (p_name != NULL) { 72179237Sjb error = sysctl_handle_string(oidp, p_name, len, req); 73179237Sjb 74179237Sjb kmem_free(p_name, 0); 75179237Sjb } 76179237Sjb 77179237Sjb return (error); 78179237Sjb} 79179237Sjb 80179237SjbSYSCTL_PROC(_debug_dtrace, OID_AUTO, providers, CTLTYPE_STRING | CTLFLAG_RD, 81179237Sjb 0, 0, sysctl_dtrace_providers, "A", ""); 82179237Sjb 83