xref: /illumos-gate/usr/src/cmd/eeprom/common/error.c (revision 6a634c9dca3093f3922e4b7ab826d7bdf17bf78e)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
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.
12  *
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]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
24  */
25 
26 #include <stdio.h>
27 #include <stdarg.h>
28 #include <errno.h>
29 
30 #define	NO_PERROR	0
31 #define	PERROR		1
32 
33 char *progname;
34 
35 void
setpname(char * name)36 setpname(char *name)
37 {
38 	register char *p = name, c;
39 
40 	if (p)
41 		while (c = *p++)
42 			if (c == '/')
43 				name = p;
44 
45 	progname = name;
46 }
47 
48 /* _error([no_perror, ] fmt [, arg ...]) */
49 /*VARARGS*/
50 int
_error(int do_perror,char * fmt,...)51 _error(int do_perror, char *fmt, ...)
52 {
53 	int saved_errno;
54 	va_list ap;
55 
56 	saved_errno = errno;
57 
58 	/*
59 	 * flush all buffers
60 	 */
61 	(void) fflush(NULL);
62 	if (progname)
63 		(void) fprintf(stderr, "%s: ", progname);
64 
65 	va_start(ap, fmt);
66 	(void) vfprintf(stderr, fmt, ap);
67 	va_end(ap);
68 
69 	if (do_perror == NO_PERROR)
70 		(void) fprintf(stderr, "\n");
71 	else {
72 		(void) fprintf(stderr, ": ");
73 		errno = saved_errno;
74 		perror("");
75 	}
76 
77 	return (1);
78 }
79