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 /*
28 * Error-handling routines
29 */
30
31 #include <string.h>
32 #include <stdlib.h>
33 #include <stdarg.h>
34 #include <stdio.h>
35 #include <errno.h>
36
37 #include <inj_err.h>
38
39 /*LINTLIBRARY*/
40
41 static const char *pname;
42
43 #pragma init(getpname)
44 const char *
getpname(void)45 getpname(void)
46 {
47 const char *p, *q;
48
49 if (pname != NULL)
50 return (pname);
51
52 if ((p = getexecname()) != NULL)
53 q = strrchr(p, '/');
54 else
55 q = NULL;
56
57 if (q == NULL)
58 pname = p;
59 else
60 pname = q + 1;
61
62 return (pname);
63 }
64
65 void
vwarn(const char * format,va_list alist)66 vwarn(const char *format, va_list alist)
67 {
68 int err = errno;
69
70 if (pname != NULL)
71 (void) fprintf(stderr, "%s: ", pname);
72
73 (void) vfprintf(stderr, format, alist);
74
75 if (strchr(format, '\n') == NULL)
76 (void) fprintf(stderr, ": %s\n", strerror(err));
77 }
78
79 /*PRINTFLIKE1*/
80 void
warn(const char * format,...)81 warn(const char *format, ...)
82 {
83 va_list alist;
84
85 va_start(alist, format);
86 vwarn(format, alist);
87 va_end(alist);
88 }
89
90 void
vdie(const char * format,va_list alist)91 vdie(const char *format, va_list alist)
92 {
93 vwarn(format, alist);
94 exit(E_ERROR);
95 }
96
97 /*PRINTFLIKE1*/
98 void
die(const char * format,...)99 die(const char *format, ...)
100 {
101 va_list alist;
102
103 va_start(alist, format);
104 vdie(format, alist);
105 va_end(alist);
106 }
107
108 int
inj_set_errno(int err)109 inj_set_errno(int err)
110 {
111 errno = err;
112 return (-1);
113 }
114