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