compat_err.c

   1 /* $Id: compat_err.c,v 1.5 2020/06/15 01:37:14 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30 #include "config.h"
  31
  32 #include <errno.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 static void vwarni(const char *, va_list);
  39 static void vwarnxi(const char *, va_list);
  40
  41 static void
  42 vwarnxi(const char *fmt, va_list ap)
  43 {
  44         fprintf(stderr, "%s: ", getprogname());
  45         if (fmt != NULL)
  46                 vfprintf(stderr, fmt, ap);
  47 }
  48
  49 static void
  50 vwarni(const char *fmt, va_list ap)
  51 {
  52         int sverrno;
  53
  54         sverrno = errno;
  55         vwarnxi(fmt, ap);
  56         if (fmt != NULL)
  57                 fputs(": ", stderr);
  58         fprintf(stderr, "%s\n", strerror(sverrno));
  59 }
  60
  61 void
  62 err(int eval, const char *fmt, ...)
  63 {
  64         va_list ap;
  65
  66         va_start(ap, fmt);
  67         vwarni(fmt, ap);
  68         va_end(ap);
  69         exit(eval);
  70 }
  71
  72 void
  73 errx(int eval, const char *fmt, ...)
  74 {
  75         va_list ap;
  76
  77         va_start(ap, fmt);
  78         vwarnxi(fmt, ap);
  79         va_end(ap);
  80         fputc('\n', stderr);
  81         exit(eval);
  82 }
  83
  84 void
  85 warn(const char *fmt, ...)
  86 {
  87         va_list ap;
  88
  89         va_start(ap, fmt);
  90         vwarni(fmt, ap);
  91         va_end(ap);
  92 }
  93
  94 void
  95 warnx(const char *fmt, ...)
  96 {
  97         va_list ap;
  98
  99         va_start(ap, fmt);
 100         vwarnxi(fmt, ap);
 101         va_end(ap);
 102         fputc('\n', stderr);
 103 }