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 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/promif.h> 30 #include <sys/promimpl.h> 31 32 /* 33 * Return a character string in buf,buflen representing the running 34 * version of the firmware. Systems that have no concept of such a 35 * string may return the string "unknown". 36 * 37 * Return the actual length of the string, including the NULL terminator. 38 * Copy at most buflen bytes into the caller's buffer, always providing 39 * NULL termination. 40 * 41 * Returns the actual length of the string, plus copies data in the callers 42 * buf copying at most buflen bytes. Returns -1 if an internal error occurs. 43 */ 44 45 int 46 prom_version_name(char *buf, int buflen) 47 { 48 pnode_t nodeid; 49 int proplen; 50 char *unknown = "unknown"; 51 52 *buf = *(buf + buflen - 1) = (char)0; /* Force NULL termination */ 53 54 /* 55 * On sun4u systems, the /openprom "version" property 56 * contains the running version of the prom. Some older 57 * pre-FCS proms may not have the "version" property, so 58 * in that case we just return "unknown". 59 */ 60 61 nodeid = prom_finddevice("/openprom"); 62 if (nodeid == (pnode_t)-1) 63 return (-1); 64 65 proplen = prom_bounded_getprop(nodeid, "version", buf, buflen - 1); 66 if (proplen <= 0) { 67 (void) prom_strncpy(buf, unknown, buflen - 1); 68 return (prom_strlen(unknown) + 1); 69 } 70 71 return (proplen); 72 } 73