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 2001-2002 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 /*
30  * Routines for memory management
31  */
32 
33 #include <sys/types.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <strings.h>
38 #include "memory.h"
39 
40 static void
41 memory_bailout(void)
42 {
43 	(void) fprintf(stderr, "Out of memory\n");
44 	exit(1);
45 }
46 
47 int
48 xasprintf(char **s, const char *fmt, ...)
49 {
50 	va_list ap;
51 	int ret;
52 
53 	va_start(ap, fmt);
54 	ret = vasprintf(s, fmt, ap);
55 	va_end(ap);
56 	if (ret == -1)
57 		memory_bailout();
58 	return (ret);
59 }
60 
61 void *
62 xmalloc(size_t size)
63 {
64 	void *mem;
65 
66 	if ((mem = malloc(size)) == NULL)
67 		memory_bailout();
68 
69 	return (mem);
70 }
71 
72 void *
73 xcalloc(size_t size)
74 {
75 	void *mem;
76 
77 	mem = xmalloc(size);
78 	bzero(mem, size);
79 
80 	return (mem);
81 }
82 
83 char *
84 xstrdup(const char *str)
85 {
86 	char *newstr;
87 
88 	if ((newstr = strdup(str)) == NULL)
89 		memory_bailout();
90 
91 	return (newstr);
92 }
93 
94 char *
95 xstrndup(char *str, size_t len)
96 {
97 	char *newstr;
98 
99 	if ((newstr = malloc(len + 1)) == NULL)
100 		memory_bailout();
101 
102 	(void) strncpy(newstr, str, len);
103 	newstr[len] = '\0';
104 
105 	return (newstr);
106 }
107 
108 void *
109 xrealloc(void *ptr, size_t size)
110 {
111 	void *mem;
112 
113 	if ((mem = realloc(ptr, size)) == NULL)
114 		memory_bailout();
115 
116 	return (mem);
117 }
118