rosapps/sysutils/dosfsck/dosfsck.c

   1 /* dosfsck.c  -  User interface */
   2
   3 /* Written 1993 by Werner Almesberger */
   4
   5 /* FAT32, VFAT, Atari format support, and various fixes additions May 1998
   6  * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
   7
   8
   9 #include "version.h"
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <unistd.h>
  16 #include <getopt.h>
  17
  18 #include "common.h"
  19 #include "dosfsck.h"
  20 #include "io.h"
  21 #include "boot.h"
  22 #include "fat.h"
  23 #include "file.h"
  24 #include "check.h"
  25
  26
  27 int interactive = 0,list = 0,test = 0,verbose = 0,write_immed = 0;
  28 int atari_format = 0;
  29 unsigned n_files = 0;
  30 void *mem_queue = NULL;
  31
  32
  33 static void usage(char *name)
  34 {
  35     fprintf(stderr,"usage: %s [-aAflrtvVwy] [-d path -d ...] "
  36       "[-u path -u ...]\n%15sdevice\n",name,"");
  37     fprintf(stderr,"  -a       automatically repair the file system\n");
  38     fprintf(stderr,"  -A       toggle Atari file system format\n");
  39     fprintf(stderr,"  -d path  drop that file\n");
  40     fprintf(stderr,"  -f       salvage unused chains to files\n");
  41     fprintf(stderr,"  -l       list path names\n");
  42     fprintf(stderr,"  -n       no-op, check non-interactively without changing\n");
  43     fprintf(stderr,"  -r       interactively repair the file system\n");
  44     fprintf(stderr,"  -t       test for bad clusters\n");
  45     fprintf(stderr,"  -u path  try to undelete that (non-directory) file\n");
  46     fprintf(stderr,"  -v       verbose mode\n");
  47     fprintf(stderr,"  -V       perform a verification pass\n");
  48     fprintf(stderr,"  -w       write changes to disk immediately\n");
  49     fprintf(stderr,"  -y       same as -a, for compat with other *fsck\n");
  50     exit(2);
  51 }
  52
  53
  54 /*
  55  * ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant
  56  * of MS-DOS filesystem by default.
  57  */
  58 static void check_atari( void )
  59 {
  60 #ifdef __mc68000__
  61     FILE *f;
  62     char line[128], *p;
  63
  64     if (!(f = fopen( "/proc/hardware", "r" ))) {
  65         perror( "/proc/hardware" );
  66         return;
  67     }
  68
  69     while( fgets( line, sizeof(line), f ) ) {
  70         if (strncmp( line, "Model:", 6 ) == 0) {
  71             p = line + 6;
  72             p += strspn( p, " \t" );
  73             if (strncmp( p, "Atari ", 6 ) == 0)
  74                 atari_format = 1;
  75             break;
  76         }
  77     }
  78     fclose( f );
  79 #endif
  80 }
  81
  82
  83 int main(int argc,char **argv)
  84 {
  85     DOS_FS fs;
  86     int rw,salvage_files,verify,c;
  87     unsigned long free_clusters;
  88
  89     rw = salvage_files = verify = 0;
  90     interactive = 1;
  91     check_atari();
  92
  93     while ((c = getopt(argc,argv,"Aad:flnrtu:vVwy")) != EOF)
  94         switch (c) {
  95             case 'A': /* toggle Atari format */
  96                 atari_format = !atari_format;
  97                 break;
  98             case 'a':
  99             case 'y':
 100                 rw = 1;
 101                 interactive = 0;
 102                 salvage_files = 1;
 103                 break;
 104             case 'd':
 105                 file_add(optarg,fdt_drop);
 106                 break;
 107             case 'f':
 108                 salvage_files = 1;
 109                 break;
 110             case 'l':
 111                 list = 1;
 112                 break;
 113             case 'n':
 114                 rw = 0;
 115                 interactive = 0;
 116                 break;
 117             case 'r':
 118                 rw = 1;
 119                 interactive = 1;
 120                 break;
 121             case 't':
 122                 test = 1;
 123                 break;
 124             case 'u':
 125                 file_add(optarg,fdt_undelete);
 126                 break;
 127             case 'v':
 128                 verbose = 1;
 129                 printf("dosfsck " VERSION " (" VERSION_DATE ")\n");
 130                 break;
 131             case 'V':
 132                 verify = 1;
 133                 break;
 134             case 'w':
 135                 write_immed = 1;
 136                 break;
 137             default:
 138                 usage(argv[0]);
 139         }
 140
 141     if ((test || write_immed) && !rw) {
 142         fprintf(stderr,"-t and -w require -a or -r\n");
 143         exit(2);
 144     }
 145     if (optind != argc-1) usage(argv[0]);
 146
 147     printf( "dosfsck " VERSION ", " VERSION_DATE ", FAT32, LFN\n" );
 148     fs_open(argv[optind],rw);
 149     read_boot(&fs);
 150     if (verify) printf("Starting check/repair pass.\n");
 151     while (read_fat(&fs), scan_root(&fs)) qfree(&mem_queue);
 152     if (test) fix_bad(&fs);
 153     if (salvage_files) reclaim_file(&fs);
 154     else reclaim_free(&fs);
 155     free_clusters = update_free(&fs);
 156     file_unused();
 157     qfree(&mem_queue);
 158     if (verify) {
 159         printf("Starting verification pass.\n");
 160         read_fat(&fs);
 161         scan_root(&fs);
 162         reclaim_free(&fs);
 163         qfree(&mem_queue);
 164     }
 165
 166     if (fs_changed()) {
 167         if (rw) {
 168             if (interactive)
 169                 rw = get_key("yn","Perform changes ? (y/n)") == 'y';
 170             else printf("Performing changes.\n");
 171         }
 172         else
 173             printf("Leaving file system unchanged.\n");
 174     }
 175
 176     printf( "%s: %u files, %lu/%lu clusters\n", argv[optind],
 177             n_files, fs.clusters - free_clusters, fs.clusters );
 178
 179     return fs_close(rw) ? 1 : 0;
 180 }
 181
 182 /* Local Variables: */
 183 /* tab-width: 8     */
 184 /* End:             */