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
   6  */
   7
   8 /*-
   9  * Copyright (c) 1993
  10  *      The Regents of the University of California.  All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. All advertising materials mentioning features or use of this software
  21  *    must display the following acknowledgement:
  22  *      This product includes software developed by the University of
  23  *      California, Berkeley and its contributors.
  24  * 4. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  */
  40
  41 #ifndef lint
  42 static const char rcsid[] =
  43         "$Id: compaterr.c,v 1.4 1999/10/13 09:57:19 stelian Exp $";
  44 #endif /* not lint */
  45
  46 #include <compaterr.h>
  47 #include <errno.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51
  52 #include <stdarg.h>
  53
  54 #include <config.h>
  55
  56 extern char *__progname;                /* Program name, from crt0. */
  57
  58 #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)
  59
  60 __BEGIN_DECLS
  61 __dead void     errc __P((int, int, const char *, ...));
  62 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  63 void            warnc __P((int, const char *, ...));
  64 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  65 void            err_set_file __P((void *));
  66 void            err_set_exit __P((void (*)(int)));
  67 __END_DECLS
  68
  69 static void (*err_exit)(int);
  70
  71 static FILE *err_file; /* file to use for error output */
  72 /*
  73  * This is declared to take a `void *' so that the caller is not required
  74  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  75  * manual page documents it as such.
  76  */
  77 void
  78 err_set_file(void *fp)
  79 {
  80         if (fp)
  81                 err_file = fp;
  82         else
  83                 err_file = stderr;
  84 }
  85
  86 void
  87 err_set_exit(void (*ef)(int))
  88 {
  89         err_exit = ef;
  90 }
  91
  92 __dead void
  93 errc(int eval, int code, const char *fmt, ...)
  94 {
  95         va_list ap;
  96         va_start(ap, fmt);
  97         verrc(eval, code, fmt, ap);
  98         va_end(ap);
  99 }
 100
 101 __dead void
 102 verrc(int eval, int code, const char *fmt, va_list ap)
 103 {
 104         if (err_file == 0)
 105                 err_set_file((FILE *)0);
 106         fprintf(err_file, "%s: ", __progname);
 107         if (fmt != NULL) {
 108                 vfprintf(err_file, fmt, ap);
 109                 fprintf(err_file, ": ");
 110         }
 111         fprintf(err_file, "%s\n", strerror(code));
 112         if (err_exit)
 113                 err_exit(eval);
 114         exit(eval);
 115 }
 116
 117 void
 118 warnc(int code, const char *fmt, ...)
 119 {
 120         va_list ap;
 121         va_start(ap, fmt);
 122         vwarnc(code, fmt, ap);
 123         va_end(ap);
 124 }
 125
 126 void
 127 vwarnc(int code, const char *fmt, va_list ap)
 128 {
 129         if (err_file == 0)
 130                 err_set_file((FILE *)0);
 131         fprintf(err_file, "%s: ", __progname);
 132         if (fmt != NULL) {
 133                 vfprintf(err_file, fmt, ap);
 134                 fprintf(err_file, ": ");
 135         }
 136         fprintf(err_file, "%s\n", strerror(code));
 137 }
 138 #endif
 139
 140 #ifndef HAVE_ERR
 141 __dead void
 142 err(int eval, const char *fmt, ...)
 143 {
 144         va_list ap;
 145         va_start(ap, fmt);
 146         verrc(eval, errno, fmt, ap);
 147         va_end(ap);
 148 }
 149 #endif
 150
 151 #ifndef HAVE_VERR
 152 __dead void
 153 verr(int eval, const char *fmt, va_list ap)
 154 {
 155         verrc(eval, errno, fmt, ap);
 156 }
 157 #endif
 158
 159 #ifndef HAVE_ERRX
 160 __dead void
 161 errx(int eval, const char *fmt, ...)
 162 {
 163         va_list ap;
 164         va_start(ap, fmt);
 165         verrx(eval, fmt, ap);
 166         va_end(ap);
 167 }
 168 #endif
 169
 170 #ifndef HAVE_VERRX
 171 __dead void
 172 verrx(int eval, const char *fmt, va_list ap)
 173 {
 174         if (err_file == 0)
 175                 err_set_file((FILE *)0);
 176         fprintf(err_file, "%s: ", __progname);
 177         if (fmt != NULL)
 178                 vfprintf(err_file, fmt, ap);
 179         fprintf(err_file, "\n");
 180         if (err_exit)
 181                 err_exit(eval);
 182         exit(eval);
 183 }
 184 #endif
 185
 186 #ifndef HAVE_WARN
 187 void
 188 warn(const char *fmt, ...)
 189 {
 190         va_list ap;
 191         va_start(ap, fmt);
 192         vwarnc(errno, fmt, ap);
 193         va_end(ap);
 194 }
 195 #endif
 196
 197 #ifndef HAVE_VWARN
 198 void
 199 vwarn(const char *fmt, va_list ap)
 200 {
 201         vwarnc(errno, fmt, ap);
 202 }
 203 #endif
 204
 205 #ifndef HAVE_WARNX
 206 void
 207 warnx(const char *fmt, ...)
 208 {
 209         va_list ap;
 210         va_start(ap, fmt);
 211         vwarnx(fmt, ap);
 212         va_end(ap);
 213 }
 214 #endif
 215
 216 #ifndef HAVE_VWARNX
 217 void
 218 vwarnx(const char *fmt, va_list ap)
 219 {
 220         if (err_file == 0)
 221                 err_set_file((FILE *)0);
 222         fprintf(err_file, "%s: ", __progname);
 223         if (fmt != NULL)
 224                 vfprintf(err_file, fmt, ap);
 225         fprintf(err_file, "\n");
 226 }
 227 #endif