xref: /illumos-gate/usr/src/tools/ctf/common/utils.c (revision 7c478bd9)
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 (c) 1998-2001 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <string.h>
30 #include <stdlib.h>
31 #include <stdarg.h>
32 #include <stdio.h>
33 #include <errno.h>
34 
35 #include "utils.h"
36 
37 /*LINTLIBRARY*/
38 
39 static const char *pname;
40 
41 #pragma init(getpname)
42 const char *
getpname(void)43 getpname(void)
44 {
45 	const char *p, *q;
46 
47 	if (pname != NULL)
48 		return (pname);
49 
50 	if ((p = getexecname()) != NULL)
51 		q = strrchr(p, '/');
52 	else
53 		q = NULL;
54 
55 	if (q == NULL)
56 		pname = p;
57 	else
58 		pname = q + 1;
59 
60 	return (pname);
61 }
62 
63 void
vwarn(const char * format,va_list alist)64 vwarn(const char *format, va_list alist)
65 {
66 	int err = errno;
67 
68 	if (pname != NULL)
69 		(void) fprintf(stderr, "%s: ", pname);
70 
71 	(void) vfprintf(stderr, format, alist);
72 
73 	if (strchr(format, '\n') == NULL)
74 		(void) fprintf(stderr, ": %s\n", strerror(err));
75 }
76 
77 /*PRINTFLIKE1*/
78 void
warn(const char * format,...)79 warn(const char *format, ...)
80 {
81 	va_list alist;
82 
83 	va_start(alist, format);
84 	vwarn(format, alist);
85 	va_end(alist);
86 }
87 
88 void
vdie(const char * format,va_list alist)89 vdie(const char *format, va_list alist)
90 {
91 	vwarn(format, alist);
92 	exit(E_ERROR);
93 }
94 
95 /*PRINTFLIKE1*/
96 void
die(const char * format,...)97 die(const char *format, ...)
98 {
99 	va_list alist;
100 
101 	va_start(alist, format);
102 	vdie(format, alist);
103 	va_end(alist);
104 }
105