1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright 2011 Joyent, Inc. All rights reserved. 26 */ 27 28 #include <sys/types.h> 29 #include <sys/systm.h> 30 #include <sys/errno.h> 31 #include <sys/loadavg.h> 32 #include <sys/zone.h> 33 #include <sys/pool_pset.h> 34 35 /* 36 * Extract elements of the raw avenrun array from the kernel for the 37 * implementation of getloadavg(3c) 38 */ 39 int 40 getloadavg(int *buf, int nelem) 41 { 42 int *loadbuf = &avenrun[0]; 43 int error; 44 45 if (nelem < 0) 46 return (set_errno(EINVAL)); 47 if (nelem > LOADAVG_NSTATS) 48 nelem = LOADAVG_NSTATS; 49 50 if (!INGLOBALZONE(curproc)) { 51 loadbuf = &curproc->p_zone->zone_avenrun[0]; 52 } 53 54 error = copyout(loadbuf, buf, nelem * sizeof (avenrun[0])); 55 if (error) 56 return (set_errno(EFAULT)); 57 return (nelem); 58 } 59