compat/lib/compaterr.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   7  */
   8
   9 /*-
  10  * Copyright (c) 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef lint
  39 static const char rcsid[] =
  40         "$Id: compaterr.c,v 1.11 2003/10/26 16:05:46 stelian Exp $";
  41 #endif /* not lint */
  42
  43 #include <config.h>
  44 #include <sys/types.h>
  45 #include <compaterr.h>
  46 #include <errno.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <stdarg.h>
  51
  52 extern char *__progname;                /* Program name, from crt0. */
  53
  54 #if !defined(HAVE_ERR) || !defined(HAVE_ERRX) || !defined(HAVE_VERR) || !defined(HAVE_VERRX) || !defined(HAVE_VWARN) || !defined(HAVE_VWARNX) || !defined(HAVE_WARN) || !defined(HAVE_WARNX)
  55
  56 __BEGIN_DECLS
  57 __dead void     errc __P((int, int, const char *, ...));
  58 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  59 void            warnc __P((int, const char *, ...));
  60 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  61 void            err_set_file __P((void *));
  62 void            err_set_exit __P((void (*)(int)));
  63 __END_DECLS
  64
  65 static void (*err_exit)(int);
  66
  67 static FILE *err_file; /* file to use for error output */
  68 /*
  69  * This is declared to take a `void *' so that the caller is not required
  70  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  71  * manual page documents it as such.
  72  */
  73 void
  74 err_set_file(void *fp)
  75 {
  76         if (fp)
  77                 err_file = fp;
  78         else
  79                 err_file = stderr;
  80 }
  81
  82 void
  83 err_set_exit(void (*ef)(int))
  84 {
  85         err_exit = ef;
  86 }
  87
  88 __dead void
  89 errc(int eval, int code, const char *fmt, ...)
  90 {
  91         va_list ap;
  92         va_start(ap, fmt);
  93         verrc(eval, code, fmt, ap);
  94         va_end(ap);
  95 }
  96
  97 __dead void
  98 verrc(int eval, int code, const char *fmt, va_list ap)
  99 {
 100         if (err_file == 0)
 101                 err_set_file((FILE *)0);
 102         fprintf(err_file, "%s: ", __progname);
 103         if (fmt != NULL) {
 104                 vfprintf(err_file, fmt, ap);
 105                 fprintf(err_file, ": ");
 106         }
 107         fprintf(err_file, "%s\n", strerror(code));
 108         if (err_exit)
 109                 err_exit(eval);
 110         exit(eval);
 111 }
 112
 113 void
 114 warnc(int code, const char *fmt, ...)
 115 {
 116         va_list ap;
 117         va_start(ap, fmt);
 118         vwarnc(code, fmt, ap);
 119         va_end(ap);
 120 }
 121
 122 void
 123 vwarnc(int code, const char *fmt, va_list ap)
 124 {
 125         if (err_file == 0)
 126                 err_set_file((FILE *)0);
 127         fprintf(err_file, "%s: ", __progname);
 128         if (fmt != NULL) {
 129                 vfprintf(err_file, fmt, ap);
 130                 fprintf(err_file, ": ");
 131         }
 132         fprintf(err_file, "%s\n", strerror(code));
 133 }
 134 #endif
 135
 136 #ifndef HAVE_ERR
 137 __dead void
 138 err(int eval, const char *fmt, ...)
 139 {
 140         va_list ap;
 141         va_start(ap, fmt);
 142         verrc(eval, errno, fmt, ap);
 143         va_end(ap);
 144 }
 145 #endif
 146
 147 #ifndef HAVE_VERR
 148 __dead void
 149 verr(int eval, const char *fmt, va_list ap)
 150 {
 151         verrc(eval, errno, fmt, ap);
 152 }
 153 #endif
 154
 155 #ifndef HAVE_ERRX
 156 __dead void
 157 errx(int eval, const char *fmt, ...)
 158 {
 159         va_list ap;
 160         va_start(ap, fmt);
 161         verrx(eval, fmt, ap);
 162         va_end(ap);
 163 }
 164 #endif
 165
 166 #ifndef HAVE_VERRX
 167 __dead void
 168 verrx(int eval, const char *fmt, va_list ap)
 169 {
 170         if (err_file == 0)
 171                 err_set_file((FILE *)0);
 172         fprintf(err_file, "%s: ", __progname);
 173         if (fmt != NULL)
 174                 vfprintf(err_file, fmt, ap);
 175         fprintf(err_file, "\n");
 176         if (err_exit)
 177                 err_exit(eval);
 178         exit(eval);
 179 }
 180 #endif
 181
 182 #ifndef HAVE_WARN
 183 void
 184 warn(const char *fmt, ...)
 185 {
 186         va_list ap;
 187         va_start(ap, fmt);
 188         vwarnc(errno, fmt, ap);
 189         va_end(ap);
 190 }
 191 #endif
 192
 193 #ifndef HAVE_VWARN
 194 void
 195 vwarn(const char *fmt, va_list ap)
 196 {
 197         vwarnc(errno, fmt, ap);
 198 }
 199 #endif
 200
 201 #ifndef HAVE_WARNX
 202 void
 203 warnx(const char *fmt, ...)
 204 {
 205         va_list ap;
 206         va_start(ap, fmt);
 207         vwarnx(fmt, ap);
 208         va_end(ap);
 209 }
 210 #endif
 211
 212 #ifndef HAVE_VWARNX
 213 void
 214 vwarnx(const char *fmt, va_list ap)
 215 {
 216         if (err_file == 0)
 217                 err_set_file((FILE *)0);
 218         fprintf(err_file, "%s: ", __progname);
 219         if (fmt != NULL)
 220                 vfprintf(err_file, fmt, ap);
 221         fprintf(err_file, "\n");
 222 }
 223 #endif