base/applications/network/finger/err.c

   1 /*-
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #if defined(LIBC_SCCS) && !defined(lint)
  35 static char sccsid[] = "@(#)err.c       8.1 (Berkeley) 6/4/93";
  36 #endif /* LIBC_SCCS and not lint */
  37
  38 #include "err.h"
  39 #include <errno.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43
  44 #ifdef __STDC__
  45 #include <stdarg.h>
  46 #else
  47 #include <varargs.h>
  48 #endif
  49
  50 extern char *__progname;                /* Program name, from crt0. */
  51
  52 void
  53 err(int eval, const char *fmt, ...)
  54 {
  55         va_list ap;
  56         va_start(ap, fmt);
  57         verr(eval, fmt, ap);
  58         va_end(ap);
  59 }
  60
  61 void
  62 verr(int eval, const char *fmt, va_list ap)
  63 {
  64         int sverrno;
  65
  66         sverrno = errno;
  67         (void)fprintf(stderr, "%s: ", __progname);
  68         if (fmt != NULL) {
  69                 (void)vfprintf(stderr, fmt, ap);
  70                 (void)fprintf(stderr, ": ");
  71         }
  72         (void)fprintf(stderr, "%s\n", strerror(sverrno));
  73         exit(eval);
  74 }
  75
  76 void
  77 errx(int eval, const char *fmt, ...)
  78 {
  79         va_list ap;
  80         va_start(ap, fmt);
  81         verrx(eval, fmt, ap);
  82         va_end(ap);
  83 }
  84
  85 void
  86 verrx(int eval, const char *fmt, va_list ap)
  87 {
  88         (void)fprintf(stderr, "%s: ", __progname);
  89         if (fmt != NULL)
  90                 (void)vfprintf(stderr, fmt, ap);
  91         (void)fprintf(stderr, "\n");
  92         exit(eval);
  93 }
  94
  95 void
  96 warn(const char *fmt, ...)
  97 {
  98         va_list ap;
  99         va_start(ap, fmt);
 100         vwarn(fmt, ap);
 101         va_end(ap);
 102 }
 103
 104 void
 105 vwarn(fmt, ap)
 106         const char *fmt;
 107         va_list ap;
 108 {
 109         int sverrno;
 110
 111         sverrno = errno;
 112         (void)fprintf(stderr, "%s: ", __progname);
 113         if (fmt != NULL) {
 114                 (void)vfprintf(stderr, fmt, ap);
 115                 (void)fprintf(stderr, ": ");
 116         }
 117         (void)fprintf(stderr, "%s\n", strerror(sverrno));
 118 }
 119
 120 void
 121 warnx(const char *fmt, ...)
 122 {
 123         va_list ap;
 124         va_start(ap, fmt);
 125         vwarnx(fmt, ap);
 126         va_end(ap);
 127 }
 128
 129 void
 130 vwarnx(fmt, ap)
 131         const char *fmt;
 132         va_list ap;
 133 {
 134         (void)fprintf(stderr, "%s: ", __progname);
 135         if (fmt != NULL)
 136                 (void)vfprintf(stderr, fmt, ap);
 137         (void)fprintf(stderr, "\n");
 138 }