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err.c revision 1.2 
      1 /*-
      2  * Copyright (c) 1993 The Regents of the University of California.
      3  * 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	5.2 (Berkeley) 3/19/93";
     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 volatile void
     53 #ifdef __STDC__
     54 err(int eval, const char *fmt, ...)
     55 #else
     56 err(eval, fmt, va_alist)
     57 	int eval;
     58 	const char *fmt;
     59 	va_dcl
     60 #endif
     61 {
     62 	_VA_LIST_ ap;
     63 #if __STDC__
     64 	va_start(ap, fmt);
     65 #else
     66 	va_start(ap);
     67 #endif
     68 	verr(eval, fmt, ap);
     69 	va_end(ap);
     70 }
     71 
     72 volatile void
     73 verr(eval, fmt, ap)
     74 	int eval;
     75 	const char *fmt;
     76 	_VA_LIST_ ap;
     77 {
     78 	int sverrno;
     79 
     80 	sverrno = errno;
     81 	(void)fprintf(stderr, "%s: ", __progname);
     82 	if (fmt != NULL) {
     83 		(void)vfprintf(stderr, fmt, ap);
     84 		(void)fprintf(stderr, ": ");
     85 	}
     86 	(void)fprintf(stderr, "%s\n", strerror(sverrno));
     87 	exit(eval);
     88 }
     89 
     90 volatile void
     91 #if __STDC__
     92 errx(int eval, const char *fmt, ...)
     93 #else
     94 errx(eval, fmt, va_alist)
     95 	int eval;
     96 	const char *fmt;
     97 	va_dcl
     98 #endif
     99 {
    100 	_VA_LIST_ ap;
    101 #if __STDC__
    102 	va_start(ap, fmt);
    103 #else
    104 	va_start(ap);
    105 #endif
    106 	verrx(eval, fmt, ap);
    107 	va_end(ap);
    108 }
    109 
    110 volatile void
    111 verrx(eval, fmt, ap)
    112 	int eval;
    113 	const char *fmt;
    114 	_VA_LIST_ ap;
    115 {
    116 	(void)fprintf(stderr, "%s: ", __progname);
    117 	if (fmt != NULL)
    118 		(void)vfprintf(stderr, fmt, ap);
    119 	(void)fprintf(stderr, "\n");
    120 	exit(eval);
    121 }
    122 
    123 void
    124 #if __STDC__
    125 warn(const char *fmt, ...)
    126 #else
    127 warn(fmt, va_alist)
    128 	int eval;
    129 	const char *fmt;
    130 	va_dcl
    131 #endif
    132 {
    133 	_VA_LIST_ ap;
    134 #if __STDC__
    135 	va_start(ap, fmt);
    136 #else
    137 	va_start(ap);
    138 #endif
    139 	vwarn(fmt, ap);
    140 	va_end(ap);
    141 }
    142 
    143 void
    144 vwarn(fmt, ap)
    145 	const char *fmt;
    146 	_VA_LIST_ ap;
    147 {
    148 	int sverrno;
    149 
    150 	sverrno = errno;
    151 	(void)fprintf(stderr, "%s: ", __progname);
    152 	if (fmt != NULL) {
    153 		(void)vfprintf(stderr, fmt, ap);
    154 		(void)fprintf(stderr, ": ");
    155 	}
    156 	(void)fprintf(stderr, "%s\n", strerror(sverrno));
    157 }
    158 
    159 void
    160 #ifdef __STDC__
    161 warnx(const char *fmt, ...)
    162 #else
    163 warnx(fmt, va_alist)
    164 	int eval;
    165 	const char *fmt;
    166 	va_dcl
    167 #endif
    168 {
    169 	_VA_LIST_ ap;
    170 #ifdef __STDC__
    171 	va_start(ap, fmt);
    172 #else
    173 	va_start(ap);
    174 #endif
    175 	vwarnx(fmt, ap);
    176 	va_end(ap);
    177 }
    178 
    179 void
    180 vwarnx(fmt, ap)
    181 	const char *fmt;
    182 	_VA_LIST_ ap;
    183 {
    184 	(void)fprintf(stderr, "%s: ", __progname);
    185 	if (fmt != NULL)
    186 		(void)vfprintf(stderr, fmt, ap);
    187 	(void)fprintf(stderr, "\n");
    188 }
    189