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 <pop@cybercable.fr>, 1999-2000
   6  *      Stelian Pop <pop@cybercable.fr> - Alcôve <www.alcove.fr>, 2000
   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 1.6 2000/11/10 14:42:25 stelian Exp $";
  45 #endif /* not lint */
  46
  47 #include <compaterr.h>
  48 #include <errno.h>
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <string.h>
  52
  53 #include <stdarg.h>
  54
  55 #include <config.h>
  56
  57 extern char *__progname;                /* Program name, from crt0. */
  58
  59 #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)
  60
  61 __BEGIN_DECLS
  62 __dead void     errc __P((int, int, const char *, ...));
  63 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  64 void            warnc __P((int, const char *, ...));
  65 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  66 void            err_set_file __P((void *));
  67 void            err_set_exit __P((void (*)(int)));
  68 __END_DECLS
  69
  70 static void (*err_exit)(int);
  71
  72 static FILE *err_file; /* file to use for error output */
  73 /*
  74  * This is declared to take a `void *' so that the caller is not required
  75  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  76  * manual page documents it as such.
  77  */
  78 void
  79 err_set_file(void *fp)
  80 {
  81         if (fp)
  82                 err_file = fp;
  83         else
  84                 err_file = stderr;
  85 }
  86
  87 void
  88 err_set_exit(void (*ef)(int))
  89 {
  90         err_exit = ef;
  91 }
  92
  93 __dead void
  94 errc(int eval, int code, const char *fmt, ...)
  95 {
  96         va_list ap;
  97         va_start(ap, fmt);
  98         verrc(eval, code, fmt, ap);
  99         va_end(ap);
 100 }
 101
 102 __dead void
 103 verrc(int eval, int code, const char *fmt, va_list ap)
 104 {
 105         if (err_file == 0)
 106                 err_set_file((FILE *)0);
 107         fprintf(err_file, "%s: ", __progname);
 108         if (fmt != NULL) {
 109                 vfprintf(err_file, fmt, ap);
 110                 fprintf(err_file, ": ");
 111         }
 112         fprintf(err_file, "%s\n", strerror(code));
 113         if (err_exit)
 114                 err_exit(eval);
 115         exit(eval);
 116 }
 117
 118 void
 119 warnc(int code, const char *fmt, ...)
 120 {
 121         va_list ap;
 122         va_start(ap, fmt);
 123         vwarnc(code, fmt, ap);
 124         va_end(ap);
 125 }
 126
 127 void
 128 vwarnc(int code, const char *fmt, va_list ap)
 129 {
 130         if (err_file == 0)
 131                 err_set_file((FILE *)0);
 132         fprintf(err_file, "%s: ", __progname);
 133         if (fmt != NULL) {
 134                 vfprintf(err_file, fmt, ap);
 135                 fprintf(err_file, ": ");
 136         }
 137         fprintf(err_file, "%s\n", strerror(code));
 138 }
 139 #endif
 140
 141 #ifndef HAVE_ERR
 142 __dead void
 143 err(int eval, const char *fmt, ...)
 144 {
 145         va_list ap;
 146         va_start(ap, fmt);
 147         verrc(eval, errno, fmt, ap);
 148         va_end(ap);
 149 }
 150 #endif
 151
 152 #ifndef HAVE_VERR
 153 __dead void
 154 verr(int eval, const char *fmt, va_list ap)
 155 {
 156         verrc(eval, errno, fmt, ap);
 157 }
 158 #endif
 159
 160 #ifndef HAVE_ERRX
 161 __dead void
 162 errx(int eval, const char *fmt, ...)
 163 {
 164         va_list ap;
 165         va_start(ap, fmt);
 166         verrx(eval, fmt, ap);
 167         va_end(ap);
 168 }
 169 #endif
 170
 171 #ifndef HAVE_VERRX
 172 __dead void
 173 verrx(int eval, const char *fmt, va_list ap)
 174 {
 175         if (err_file == 0)
 176                 err_set_file((FILE *)0);
 177         fprintf(err_file, "%s: ", __progname);
 178         if (fmt != NULL)
 179                 vfprintf(err_file, fmt, ap);
 180         fprintf(err_file, "\n");
 181         if (err_exit)
 182                 err_exit(eval);
 183         exit(eval);
 184 }
 185 #endif
 186
 187 #ifndef HAVE_WARN
 188 void
 189 warn(const char *fmt, ...)
 190 {
 191         va_list ap;
 192         va_start(ap, fmt);
 193         vwarnc(errno, fmt, ap);
 194         va_end(ap);
 195 }
 196 #endif
 197
 198 #ifndef HAVE_VWARN
 199 void
 200 vwarn(const char *fmt, va_list ap)
 201 {
 202         vwarnc(errno, fmt, ap);
 203 }
 204 #endif
 205
 206 #ifndef HAVE_WARNX
 207 void
 208 warnx(const char *fmt, ...)
 209 {
 210         va_list ap;
 211         va_start(ap, fmt);
 212         vwarnx(fmt, ap);
 213         va_end(ap);
 214 }
 215 #endif
 216
 217 #ifndef HAVE_VWARNX
 218 void
 219 vwarnx(const char *fmt, va_list ap)
 220 {
 221         if (err_file == 0)
 222                 err_set_file((FILE *)0);
 223         fprintf(err_file, "%s: ", __progname);
 224         if (fmt != NULL)
 225                 vfprintf(err_file, fmt, ap);
 226         fprintf(err_file, "\n");
 227 }
 228 #endif