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 <stddef.h> 30 #include <stdlib.h> 31 #include <stdio.h> 32 #include <stdarg.h> 33 #include <string.h> 34 #include <locale.h> 35 #include <sys/param.h> 36 #include <config_admin.h> 37 #include "mema_util.h" 38 39 /* 40 * The libmemadm routines can return arbitrary error strings. As the 41 * calling program does not know how long these errors might be, 42 * the library routines must allocate the required space and the 43 * calling program must deallocate it. 44 * 45 * This routine povides a printf-like interface for creating the 46 * error strings. 47 */ 48 49 #define FMT_STR_SLOP (16) 50 51 void 52 __fmt_errstring( 53 char **errstring, 54 size_t extra_length_hint, 55 const char *fmt, 56 ...) 57 { 58 char *ebuf; 59 size_t elen; 60 va_list ap; 61 62 /* 63 * If no errors required or error already set, return. 64 */ 65 if ((errstring == NULL) || (*errstring != NULL)) 66 return; 67 68 elen = strlen(fmt) + extra_length_hint + FMT_STR_SLOP; 69 70 if ((ebuf = (char *)malloc(elen + 1)) == NULL) 71 return; 72 73 va_start(ap, fmt); 74 (void) vsprintf(ebuf, fmt, ap); 75 va_end(ap); 76 77 if (strlen(ebuf) > elen) 78 abort(); 79 80 *errstring = ebuf; 81 } 82