191eaf3e1SJohn Birrell /* 291eaf3e1SJohn Birrell * CDDL HEADER START 391eaf3e1SJohn Birrell * 491eaf3e1SJohn Birrell * The contents of this file are subject to the terms of the 591eaf3e1SJohn Birrell * Common Development and Distribution License (the "License"). 691eaf3e1SJohn Birrell * You may not use this file except in compliance with the License. 791eaf3e1SJohn Birrell * 891eaf3e1SJohn Birrell * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 991eaf3e1SJohn Birrell * or http://www.opensolaris.org/os/licensing. 1091eaf3e1SJohn Birrell * See the License for the specific language governing permissions 1191eaf3e1SJohn Birrell * and limitations under the License. 1291eaf3e1SJohn Birrell * 1391eaf3e1SJohn Birrell * When distributing Covered Code, include this CDDL HEADER in each 1491eaf3e1SJohn Birrell * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 1591eaf3e1SJohn Birrell * If applicable, add the following below this CDDL HEADER, with the 1691eaf3e1SJohn Birrell * fields enclosed by brackets "[]" replaced with your own identifying 1791eaf3e1SJohn Birrell * information: Portions Copyright [yyyy] [name of copyright owner] 1891eaf3e1SJohn Birrell * 1991eaf3e1SJohn Birrell * CDDL HEADER END 2091eaf3e1SJohn Birrell * 2191eaf3e1SJohn Birrell * $FreeBSD$ 2291eaf3e1SJohn Birrell * 2391eaf3e1SJohn Birrell */ 2491eaf3e1SJohn Birrell 25b53bfbbaSMark Johnston SYSCTL_NODE(_debug, OID_AUTO, dtrace, CTLFLAG_RD, 0, "DTrace debug parameters"); 26b53bfbbaSMark Johnston 2791eaf3e1SJohn Birrell int dtrace_debug = 0; 28af3b2549SHans Petter Selasky SYSCTL_INT(_debug_dtrace, OID_AUTO, debug, CTLFLAG_RWTUN, &dtrace_debug, 0, ""); 2991eaf3e1SJohn Birrell 3091eaf3e1SJohn Birrell /* Report registered DTrace providers. */ 3191eaf3e1SJohn Birrell static int 3291eaf3e1SJohn Birrell sysctl_dtrace_providers(SYSCTL_HANDLER_ARGS) 3391eaf3e1SJohn Birrell { 3491eaf3e1SJohn Birrell char *p_name = NULL; 3591eaf3e1SJohn Birrell dtrace_provider_t 3691eaf3e1SJohn Birrell *prov = dtrace_provider; 3791eaf3e1SJohn Birrell int error = 0; 3891eaf3e1SJohn Birrell size_t len = 0; 3991eaf3e1SJohn Birrell 4091eaf3e1SJohn Birrell mutex_enter(&dtrace_provider_lock); 4191eaf3e1SJohn Birrell mutex_enter(&dtrace_lock); 4291eaf3e1SJohn Birrell 4391eaf3e1SJohn Birrell /* Compute the length of the space-separated provider name string. */ 4491eaf3e1SJohn Birrell while (prov != NULL) { 4591eaf3e1SJohn Birrell len += strlen(prov->dtpv_name) + 1; 4691eaf3e1SJohn Birrell prov = prov->dtpv_next; 4791eaf3e1SJohn Birrell } 4891eaf3e1SJohn Birrell 4991eaf3e1SJohn Birrell if ((p_name = kmem_alloc(len, KM_SLEEP)) == NULL) 5091eaf3e1SJohn Birrell error = ENOMEM; 5191eaf3e1SJohn Birrell else { 5291eaf3e1SJohn Birrell /* Start with an empty string. */ 5391eaf3e1SJohn Birrell *p_name = '\0'; 5491eaf3e1SJohn Birrell 5591eaf3e1SJohn Birrell /* Point to the first provider again. */ 5691eaf3e1SJohn Birrell prov = dtrace_provider; 5791eaf3e1SJohn Birrell 5891eaf3e1SJohn Birrell /* Loop through the providers, appending the names. */ 5991eaf3e1SJohn Birrell while (prov != NULL) { 6091eaf3e1SJohn Birrell if (prov != dtrace_provider) 6191eaf3e1SJohn Birrell (void) strlcat(p_name, " ", len); 6291eaf3e1SJohn Birrell 6391eaf3e1SJohn Birrell (void) strlcat(p_name, prov->dtpv_name, len); 6491eaf3e1SJohn Birrell 6591eaf3e1SJohn Birrell prov = prov->dtpv_next; 6691eaf3e1SJohn Birrell } 6791eaf3e1SJohn Birrell } 6891eaf3e1SJohn Birrell 6991eaf3e1SJohn Birrell mutex_exit(&dtrace_lock); 7091eaf3e1SJohn Birrell mutex_exit(&dtrace_provider_lock); 7191eaf3e1SJohn Birrell 7291eaf3e1SJohn Birrell if (p_name != NULL) { 7391eaf3e1SJohn Birrell error = sysctl_handle_string(oidp, p_name, len, req); 7491eaf3e1SJohn Birrell 7591eaf3e1SJohn Birrell kmem_free(p_name, 0); 7691eaf3e1SJohn Birrell } 7791eaf3e1SJohn Birrell 7891eaf3e1SJohn Birrell return (error); 7991eaf3e1SJohn Birrell } 8091eaf3e1SJohn Birrell 8191eaf3e1SJohn Birrell SYSCTL_PROC(_debug_dtrace, OID_AUTO, providers, CTLTYPE_STRING | CTLFLAG_RD, 82b53bfbbaSMark Johnston 0, 0, sysctl_dtrace_providers, "A", "available DTrace providers"); 8391eaf3e1SJohn Birrell 84b53bfbbaSMark Johnston SYSCTL_NODE(_kern, OID_AUTO, dtrace, CTLFLAG_RD, 0, "DTrace parameters"); 85b53bfbbaSMark Johnston 86b53bfbbaSMark Johnston SYSCTL_INT(_kern_dtrace, OID_AUTO, memstr_max, CTLFLAG_RW, &dtrace_memstr_max, 87e572bc11SMark Johnston 0, "largest allowed argument to memstr(), 0 indicates no limit"); 88b53bfbbaSMark Johnston 89*f0188618SHans Petter Selasky SYSCTL_QUAD(_kern_dtrace, OID_AUTO, dof_maxsize, CTLFLAG_RW, 90b53bfbbaSMark Johnston &dtrace_dof_maxsize, 0, "largest allowed DOF table"); 91b53bfbbaSMark Johnston 92*f0188618SHans Petter Selasky SYSCTL_QUAD(_kern_dtrace, OID_AUTO, helper_actions_max, CTLFLAG_RW, 93b53bfbbaSMark Johnston &dtrace_helper_actions_max, 0, "maximum number of allowed helper actions"); 94