Patrick Welche <prlw1@cam.ac.uk>
[netbsd-mini2440.git] / external / cddl / osnet / dist / lib / libuutil / common / uu_alloc.c
blob05d8622871fa9199e9e4ae89e4f2fbeb1bc60c60
1 /*
2 * CDDL HEADER START
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.
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.
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]
19 * CDDL HEADER END
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #include "libuutil_common.h"
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
33 void *
34 uu_zalloc(size_t n)
36 void *p = malloc(n);
38 if (p == NULL) {
39 uu_set_error(UU_ERROR_SYSTEM);
40 return (NULL);
43 (void) memset(p, 0, n);
45 return (p);
48 void
49 uu_free(void *p)
51 free(p);
54 char *
55 uu_strdup(const char *str)
57 char *buf = NULL;
59 if (str != NULL) {
60 size_t sz;
62 sz = strlen(str) + 1;
63 buf = uu_zalloc(sz);
64 if (buf != NULL)
65 (void) memcpy(buf, str, sz);
67 return (buf);
70 char *
71 uu_msprintf(const char *format, ...)
73 va_list args;
74 char attic[1];
75 uint_t M, m;
76 char *b;
78 va_start(args, format);
79 M = vsnprintf(attic, 1, format, args);
80 va_end(args);
82 for (;;) {
83 m = M;
84 if ((b = uu_zalloc(m + 1)) == NULL)
85 return (NULL);
87 va_start(args, format);
88 M = vsnprintf(b, m + 1, format, args);
89 va_end(args);
91 if (M == m)
92 break; /* sizes match */
94 uu_free(b);
97 return (b);