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 2004 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  * Error-handling routines
31  */
32 
33 #include <string.h>
34 #include <stdlib.h>
35 #include <stdarg.h>
36 #include <stdio.h>
37 #include <errno.h>
38 
39 #include <inj_err.h>
40 
41 /*LINTLIBRARY*/
42 
43 static const char *pname;
44 
45 #pragma init(getpname)
46 const char *
getpname(void)47 getpname(void)
48 {
49 	const char *p, *q;
50 
51 	if (pname != NULL)
52 		return (pname);
53 
54 	if ((p = getexecname()) != NULL)
55 		q = strrchr(p, '/');
56 	else
57 		q = NULL;
58 
59 	if (q == NULL)
60 		pname = p;
61 	else
62 		pname = q + 1;
63 
64 	return (pname);
65 }
66 
67 void
vwarn(const char * format,va_list alist)68 vwarn(const char *format, va_list alist)
69 {
70 	int err = errno;
71 
72 	if (pname != NULL)
73 		(void) fprintf(stderr, "%s: ", pname);
74 
75 	(void) vfprintf(stderr, format, alist);
76 
77 	if (strchr(format, '\n') == NULL)
78 		(void) fprintf(stderr, ": %s\n", strerror(err));
79 }
80 
81 /*PRINTFLIKE1*/
82 void
warn(const char * format,...)83 warn(const char *format, ...)
84 {
85 	va_list alist;
86 
87 	va_start(alist, format);
88 	vwarn(format, alist);
89 	va_end(alist);
90 }
91 
92 void
vdie(const char * format,va_list alist)93 vdie(const char *format, va_list alist)
94 {
95 	vwarn(format, alist);
96 	exit(E_ERROR);
97 }
98 
99 /*PRINTFLIKE1*/
100 void
die(const char * format,...)101 die(const char *format, ...)
102 {
103 	va_list alist;
104 
105 	va_start(alist, format);
106 	vdie(format, alist);
107 	va_end(alist);
108 }
109 
110 int
inj_set_errno(int err)111 inj_set_errno(int err)
112 {
113 	errno = err;
114 	return (-1);
115 }
116