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. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 static const char rcsid[] =
  44         "$Id: compaterr.c,v 1.9 2002/01/16 09:32:14 stelian Exp $";
  45 #endif /* not lint */
  46
  47 #include <config.h>
  48 #include <compaterr.h>
  49 #include <errno.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <stdarg.h>
  54
  55 extern char *__progname;                /* Program name, from crt0. */
  56
  57 #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)
  58
  59 __BEGIN_DECLS
  60 __dead void     errc __P((int, int, const char *, ...));
  61 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  62 void            warnc __P((int, const char *, ...));
  63 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  64 void            err_set_file __P((void *));
  65 void            err_set_exit __P((void (*)(int)));
  66 __END_DECLS
  67
  68 static void (*err_exit)(int);
  69
  70 static FILE *err_file; /* file to use for error output */
  71 /*
  72  * This is declared to take a `void *' so that the caller is not required
  73  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  74  * manual page documents it as such.
  75  */
  76 void
  77 err_set_file(void *fp)
  78 {
  79         if (fp)
  80                 err_file = fp;
  81         else
  82                 err_file = stderr;
  83 }
  84
  85 void
  86 err_set_exit(void (*ef)(int))
  87 {
  88         err_exit = ef;
  89 }
  90
  91 __dead void
  92 errc(int eval, int code, const char *fmt, ...)
  93 {
  94         va_list ap;
  95         va_start(ap, fmt);
  96         verrc(eval, code, fmt, ap);
  97         va_end(ap);
  98 }
  99
 100 __dead void
 101 verrc(int eval, int code, const char *fmt, va_list ap)
 102 {
 103         if (err_file == 0)
 104                 err_set_file((FILE *)0);
 105         fprintf(err_file, "%s: ", __progname);
 106         if (fmt != NULL) {
 107                 vfprintf(err_file, fmt, ap);
 108                 fprintf(err_file, ": ");
 109         }
 110         fprintf(err_file, "%s\n", strerror(code));
 111         if (err_exit)
 112                 err_exit(eval);
 113         exit(eval);
 114 }
 115
 116 void
 117 warnc(int code, const char *fmt, ...)
 118 {
 119         va_list ap;
 120         va_start(ap, fmt);
 121         vwarnc(code, fmt, ap);
 122         va_end(ap);
 123 }
 124
 125 void
 126 vwarnc(int code, const char *fmt, va_list ap)
 127 {
 128         if (err_file == 0)
 129                 err_set_file((FILE *)0);
 130         fprintf(err_file, "%s: ", __progname);
 131         if (fmt != NULL) {
 132                 vfprintf(err_file, fmt, ap);
 133                 fprintf(err_file, ": ");
 134         }
 135         fprintf(err_file, "%s\n", strerror(code));
 136 }
 137 #endif
 138
 139 #ifndef HAVE_ERR
 140 __dead void
 141 err(int eval, const char *fmt, ...)
 142 {
 143         va_list ap;
 144         va_start(ap, fmt);
 145         verrc(eval, errno, fmt, ap);
 146         va_end(ap);
 147 }
 148 #endif
 149
 150 #ifndef HAVE_VERR
 151 __dead void
 152 verr(int eval, const char *fmt, va_list ap)
 153 {
 154         verrc(eval, errno, fmt, ap);
 155 }
 156 #endif
 157
 158 #ifndef HAVE_ERRX
 159 __dead void
 160 errx(int eval, const char *fmt, ...)
 161 {
 162         va_list ap;
 163         va_start(ap, fmt);
 164         verrx(eval, fmt, ap);
 165         va_end(ap);
 166 }
 167 #endif
 168
 169 #ifndef HAVE_VERRX
 170 __dead void
 171 verrx(int eval, const char *fmt, va_list ap)
 172 {
 173         if (err_file == 0)
 174                 err_set_file((FILE *)0);
 175         fprintf(err_file, "%s: ", __progname);
 176         if (fmt != NULL)
 177                 vfprintf(err_file, fmt, ap);
 178         fprintf(err_file, "\n");
 179         if (err_exit)
 180                 err_exit(eval);
 181         exit(eval);
 182 }
 183 #endif
 184
 185 #ifndef HAVE_WARN
 186 void
 187 warn(const char *fmt, ...)
 188 {
 189         va_list ap;
 190         va_start(ap, fmt);
 191         vwarnc(errno, fmt, ap);
 192         va_end(ap);
 193 }
 194 #endif
 195
 196 #ifndef HAVE_VWARN
 197 void
 198 vwarn(const char *fmt, va_list ap)
 199 {
 200         vwarnc(errno, fmt, ap);
 201 }
 202 #endif
 203
 204 #ifndef HAVE_WARNX
 205 void
 206 warnx(const char *fmt, ...)
 207 {
 208         va_list ap;
 209         va_start(ap, fmt);
 210         vwarnx(fmt, ap);
 211         va_end(ap);
 212 }
 213 #endif
 214
 215 #ifndef HAVE_VWARNX
 216 void
 217 vwarnx(const char *fmt, va_list ap)
 218 {
 219         if (err_file == 0)
 220                 err_set_file((FILE *)0);
 221         fprintf(err_file, "%s: ", __progname);
 222         if (fmt != NULL)
 223                 vfprintf(err_file, fmt, ap);
 224         fprintf(err_file, "\n");
 225 }
 226 #endif