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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include "libuutil_common.h" 27 28 #include <stdarg.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <string.h> 32 33 void * 34 uu_zalloc(size_t n) 35 { 36 void *p = malloc(n); 37 38 if (p == NULL) { 39 uu_set_error(UU_ERROR_SYSTEM); 40 return (NULL); 41 } 42 43 (void) memset(p, 0, n); 44 45 return (p); 46 } 47 48 void 49 uu_free(void *p) 50 { 51 free(p); 52 } 53 54 char * 55 uu_strdup(const char *str) 56 { 57 char *buf = NULL; 58 59 if (str != NULL) { 60 size_t sz; 61 62 sz = strlen(str) + 1; 63 buf = uu_zalloc(sz); 64 if (buf != NULL) 65 (void) memcpy(buf, str, sz); 66 } 67 return (buf); 68 } 69 70 char * 71 uu_msprintf(const char *format, ...) 72 { 73 va_list args; 74 char attic[1]; 75 uint_t M, m; 76 char *b; 77 78 va_start(args, format); 79 M = vsnprintf(attic, 1, format, args); 80 va_end(args); 81 82 for (;;) { 83 m = M; 84 if ((b = uu_zalloc(m + 1)) == NULL) 85 return (NULL); 86 87 va_start(args, format); 88 M = vsnprintf(b, m + 1, format, args); 89 va_end(args); 90 91 if (M == m) 92 break; /* sizes match */ 93 94 uu_free(b); 95 } 96 97 return (b); 98 } 99