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 1.10 2003/03/30 15:40:35 stelian Exp $";
  41 #endif /* not lint */
  42
  43 #include <config.h>
  44 #include <compaterr.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <stdarg.h>
  50
  51 extern char *__progname;                /* Program name, from crt0. */
  52
  53 #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)
  54
  55 __BEGIN_DECLS
  56 __dead void     errc __P((int, int, const char *, ...));
  57 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  58 void            warnc __P((int, const char *, ...));
  59 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  60 void            err_set_file __P((void *));
  61 void            err_set_exit __P((void (*)(int)));
  62 __END_DECLS
  63
  64 static void (*err_exit)(int);
  65
  66 static FILE *err_file; /* file to use for error output */
  67 /*
  68  * This is declared to take a `void *' so that the caller is not required
  69  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  70  * manual page documents it as such.
  71  */
  72 void
  73 err_set_file(void *fp)
  74 {
  75         if (fp)
  76                 err_file = fp;
  77         else
  78                 err_file = stderr;
  79 }
  80
  81 void
  82 err_set_exit(void (*ef)(int))
  83 {
  84         err_exit = ef;
  85 }
  86
  87 __dead void
  88 errc(int eval, int code, const char *fmt, ...)
  89 {
  90         va_list ap;
  91         va_start(ap, fmt);
  92         verrc(eval, code, fmt, ap);
  93         va_end(ap);
  94 }
  95
  96 __dead void
  97 verrc(int eval, int code, const char *fmt, va_list ap)
  98 {
  99         if (err_file == 0)
 100                 err_set_file((FILE *)0);
 101         fprintf(err_file, "%s: ", __progname);
 102         if (fmt != NULL) {
 103                 vfprintf(err_file, fmt, ap);
 104                 fprintf(err_file, ": ");
 105         }
 106         fprintf(err_file, "%s\n", strerror(code));
 107         if (err_exit)
 108                 err_exit(eval);
 109         exit(eval);
 110 }
 111
 112 void
 113 warnc(int code, const char *fmt, ...)
 114 {
 115         va_list ap;
 116         va_start(ap, fmt);
 117         vwarnc(code, fmt, ap);
 118         va_end(ap);
 119 }
 120
 121 void
 122 vwarnc(int code, const char *fmt, va_list ap)
 123 {
 124         if (err_file == 0)
 125                 err_set_file((FILE *)0);
 126         fprintf(err_file, "%s: ", __progname);
 127         if (fmt != NULL) {
 128                 vfprintf(err_file, fmt, ap);
 129                 fprintf(err_file, ": ");
 130         }
 131         fprintf(err_file, "%s\n", strerror(code));
 132 }
 133 #endif
 134
 135 #ifndef HAVE_ERR
 136 __dead void
 137 err(int eval, const char *fmt, ...)
 138 {
 139         va_list ap;
 140         va_start(ap, fmt);
 141         verrc(eval, errno, fmt, ap);
 142         va_end(ap);
 143 }
 144 #endif
 145
 146 #ifndef HAVE_VERR
 147 __dead void
 148 verr(int eval, const char *fmt, va_list ap)
 149 {
 150         verrc(eval, errno, fmt, ap);
 151 }
 152 #endif
 153
 154 #ifndef HAVE_ERRX
 155 __dead void
 156 errx(int eval, const char *fmt, ...)
 157 {
 158         va_list ap;
 159         va_start(ap, fmt);
 160         verrx(eval, fmt, ap);
 161         va_end(ap);
 162 }
 163 #endif
 164
 165 #ifndef HAVE_VERRX
 166 __dead void
 167 verrx(int eval, const char *fmt, va_list ap)
 168 {
 169         if (err_file == 0)
 170                 err_set_file((FILE *)0);
 171         fprintf(err_file, "%s: ", __progname);
 172         if (fmt != NULL)
 173                 vfprintf(err_file, fmt, ap);
 174         fprintf(err_file, "\n");
 175         if (err_exit)
 176                 err_exit(eval);
 177         exit(eval);
 178 }
 179 #endif
 180
 181 #ifndef HAVE_WARN
 182 void
 183 warn(const char *fmt, ...)
 184 {
 185         va_list ap;
 186         va_start(ap, fmt);
 187         vwarnc(errno, fmt, ap);
 188         va_end(ap);
 189 }
 190 #endif
 191
 192 #ifndef HAVE_VWARN
 193 void
 194 vwarn(const char *fmt, va_list ap)
 195 {
 196         vwarnc(errno, fmt, ap);
 197 }
 198 #endif
 199
 200 #ifndef HAVE_WARNX
 201 void
 202 warnx(const char *fmt, ...)
 203 {
 204         va_list ap;
 205         va_start(ap, fmt);
 206         vwarnx(fmt, ap);
 207         va_end(ap);
 208 }
 209 #endif
 210
 211 #ifndef HAVE_VWARNX
 212 void
 213 vwarnx(const char *fmt, va_list ap)
 214 {
 215         if (err_file == 0)
 216                 err_set_file((FILE *)0);
 217         fprintf(err_file, "%s: ", __progname);
 218         if (fmt != NULL)
 219                 vfprintf(err_file, fmt, ap);
 220         fprintf(err_file, "\n");
 221 }
 222 #endif