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 /*-
  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  *      From: @(#)err.c 8.1 (Berkeley) 6/4/93
  41  */
  42
  43 #if defined(LIBC_RCS) && !defined(lint)
  44 static const char rcsid[] =
  45         "$Id: compaterr.c,v 1.2 1999/10/11 13:08:07 stelian Exp $";
  46 #endif /* LIBC_RCS and not lint */
  47
  48 #include <compaterr.h>
  49 #include <errno.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53
  54 #include <stdarg.h>
  55
  56 #include <config.h>
  57
  58 extern char *__progname;                /* Program name, from crt0. */
  59
  60 #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)
  61
  62 __BEGIN_DECLS
  63 __dead void     errc __P((int, int, const char *, ...));
  64 __dead void     verrc __P((int, int, const char *, _BSD_VA_LIST_));
  65 void            warnc __P((int, const char *, ...));
  66 void            vwarnc __P((int, const char *, _BSD_VA_LIST_));
  67 void            err_set_file __P((void *));
  68 void            err_set_exit __P((void (*)(int)));
  69 __END_DECLS
  70
  71 static void (*err_exit)(int);
  72
  73 static FILE *err_file; /* file to use for error output */
  74 /*
  75  * This is declared to take a `void *' so that the caller is not required
  76  * to include <stdio.h> first.  However, it is really a `FILE *', and the
  77  * manual page documents it as such.
  78  */
  79 void
  80 err_set_file(void *fp)
  81 {
  82         if (fp)
  83                 err_file = fp;
  84         else
  85                 err_file = stderr;
  86 }
  87
  88 void
  89 err_set_exit(void (*ef)(int))
  90 {
  91         err_exit = ef;
  92 }
  93
  94 __dead void
  95 errc(int eval, int code, const char *fmt, ...)
  96 {
  97         va_list ap;
  98         va_start(ap, fmt);
  99         verrc(eval, code, fmt, ap);
 100         va_end(ap);
 101 }
 102
 103 __dead void
 104 verrc(int eval, int code, const char *fmt, va_list ap)
 105 {
 106         if (err_file == 0)
 107                 err_set_file((FILE *)0);
 108         fprintf(err_file, "%s: ", __progname);
 109         if (fmt != NULL) {
 110                 vfprintf(err_file, fmt, ap);
 111                 fprintf(err_file, ": ");
 112         }
 113         fprintf(err_file, "%s\n", strerror(code));
 114         if (err_exit)
 115                 err_exit(eval);
 116         exit(eval);
 117 }
 118
 119 void
 120 warnc(int code, const char *fmt, ...)
 121 {
 122         va_list ap;
 123         va_start(ap, fmt);
 124         vwarnc(code, fmt, ap);
 125         va_end(ap);
 126 }
 127
 128 void
 129 vwarnc(int code, const char *fmt, va_list ap)
 130 {
 131         if (err_file == 0)
 132                 err_set_file((FILE *)0);
 133         fprintf(err_file, "%s: ", __progname);
 134         if (fmt != NULL) {
 135                 vfprintf(err_file, fmt, ap);
 136                 fprintf(err_file, ": ");
 137         }
 138         fprintf(err_file, "%s\n", strerror(code));
 139 }
 140 #endif
 141
 142 #ifndef HAVE_ERR
 143 __dead void
 144 err(int eval, const char *fmt, ...)
 145 {
 146         va_list ap;
 147         va_start(ap, fmt);
 148         verrc(eval, errno, fmt, ap);
 149         va_end(ap);
 150 }
 151 #endif
 152
 153 #ifndef HAVE_VERR
 154 __dead void
 155 verr(int eval, const char *fmt, va_list ap)
 156 {
 157         verrc(eval, errno, fmt, ap);
 158 }
 159 #endif
 160
 161 #ifndef HAVE_ERRX
 162 __dead void
 163 errx(int eval, const char *fmt, ...)
 164 {
 165         va_list ap;
 166         va_start(ap, fmt);
 167         verrx(eval, fmt, ap);
 168         va_end(ap);
 169 }
 170 #endif
 171
 172 #ifndef HAVE_VERRX
 173 __dead void
 174 verrx(int eval, const char *fmt, va_list ap)
 175 {
 176         if (err_file == 0)
 177                 err_set_file((FILE *)0);
 178         fprintf(err_file, "%s: ", __progname);
 179         if (fmt != NULL)
 180                 vfprintf(err_file, fmt, ap);
 181         fprintf(err_file, "\n");
 182         if (err_exit)
 183                 err_exit(eval);
 184         exit(eval);
 185 }
 186 #endif
 187
 188 #ifndef HAVE_WARN
 189 void
 190 warn(const char *fmt, ...)
 191 {
 192         va_list ap;
 193         va_start(ap, fmt);
 194         vwarnc(errno, fmt, ap);
 195         va_end(ap);
 196 }
 197 #endif
 198
 199 #ifndef HAVE_VWARN
 200 void
 201 vwarn(const char *fmt, va_list ap)
 202 {
 203         vwarnc(errno, fmt, ap);
 204 }
 205 #endif
 206
 207 #ifndef HAVE_WARNX
 208 void
 209 warnx(const char *fmt, ...)
 210 {
 211         va_list ap;
 212         va_start(ap, fmt);
 213         vwarnx(fmt, ap);
 214         va_end(ap);
 215 }
 216 #endif
 217
 218 #ifndef HAVE_VWARNX
 219 void
 220 vwarnx(const char *fmt, va_list ap)
 221 {
 222         if (err_file == 0)
 223                 err_set_file((FILE *)0);
 224         fprintf(err_file, "%s: ", __progname);
 225         if (fmt != NULL)
 226                 vfprintf(err_file, fmt, ap);
 227         fprintf(err_file, "\n");
 228 }
 229 #endif