sbin/fsck_msdosfs/main.c

   1 /*
   2  * Copyright (C) 1995 Wolfgang Solfrank
   3  * Copyright (c) 1995 Martin Husemann
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Martin Husemann
  16  *      and Wolfgang Solfrank.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $NetBSD: main.c,v 1.10 1997/10/01 02:18:14 enami Exp $
  33  * $FreeBSD: src/sbin/fsck_msdosfs/main.c,v 1.4.2.1 2001/08/01 05:47:56 obrien Exp $
  34  * $DragonFly: src/sbin/fsck_msdosfs/main.c,v 1.4 2003/11/01 17:15:58 drhodus Exp $
  35  */
  36
  37
  38 #include <sys/cdefs.h>
  39
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <ctype.h>
  43 #include <stdio.h>
  44 #include <unistd.h>
  45 #include <errno.h>
  46 #if __STDC__
  47 #include <stdarg.h>
  48 #else
  49 #include <varargs.h>
  50 #endif
  51
  52 #include "fsutil.h"
  53 #include "ext.h"
  54
  55 int alwaysno;           /* assume "no" for all questions */
  56 int alwaysyes;          /* assume "yes" for all questions */
  57 int preen;              /* set when preening */
  58 int rdonly;             /* device is opened read only (supersedes above) */
  59
  60 static void usage(void);
  61 int main(int, char **);
  62
  63 static void
  64 usage(void)
  65 {
  66         errexit("Usage: fsck_msdos [-fnpy] filesystem ... \n");
  67 }
  68
  69 int
  70 main(int argc, char **argv)
  71 {
  72         int ret = 0, erg;
  73         int ch;
  74
  75         while ((ch = getopt(argc, argv, "fFnpy")) != -1) {
  76                 switch (ch) {
  77                 case 'f':
  78                         /*
  79                          * We are always forced, since we don't
  80                          * have a clean flag
  81                          */
  82                         break;
  83                 case 'F':
  84                         /* We can never run in background */
  85                         exit(5);
  86                         break;
  87                 case 'n':
  88                         alwaysno = 1;
  89                         alwaysyes = preen = 0;
  90                         break;
  91                 case 'y':
  92                         alwaysyes = 1;
  93                         alwaysno = preen = 0;
  94                         break;
  95
  96                 case 'p':
  97                         preen = 1;
  98                         alwaysyes = alwaysno = 0;
  99                         break;
 100
 101                 default:
 102                         usage();
 103                         break;
 104                 }
 105         }
 106         argc -= optind;
 107         argv += optind;
 108
 109         if (!argc)
 110                 usage();
 111
 112         while (--argc >= 0) {
 113                 setcdevname(*argv, preen);
 114                 erg = checkfilesys(*argv++);
 115                 if (erg > ret)
 116                         ret = erg;
 117         }
 118
 119         return ret;
 120 }
 121
 122
 123 /*VARARGS*/
 124 int
 125 ask(int def, const char *fmt, ...)
 126 {
 127         va_list ap;
 128
 129         char prompt[256];
 130         int c;
 131
 132         if (preen) {
 133                 if (rdonly)
 134                         def = 0;
 135                 if (def)
 136                         printf("FIXED\n");
 137                 return def;
 138         }
 139
 140         va_start(ap, fmt);
 141         vsnprintf(prompt, sizeof(prompt), fmt, ap);
 142         if (alwaysyes || rdonly) {
 143                 printf("%s? %s\n", prompt, rdonly ? "no" : "yes");
 144                 return !rdonly;
 145         }
 146         do {
 147                 printf("%s? [yn] ", prompt);
 148                 fflush(stdout);
 149                 c = getchar();
 150                 while (c != '\n' && getchar() != '\n')
 151                         if (feof(stdin))
 152                                 return 0;
 153         } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
 154         return c == 'y' || c == 'Y';
 155 }