mkomfs.c

   1 /*  mkomfs.c - Create an OMFS filesystem
   2  *
   3  *  GPL blah blah
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <unistd.h>
  11
  12 #include "config.h"
  13 #include "disksize.h"
  14 #include "create_fs.h"
  15
  16 #include <getopt.h>
  17
  18 int main(int argc, char *argv[])
  19 {
  20         FILE *fp;
  21         char *dev;
  22         u64 size;
  23
  24         fs_config_t config = {
  25                 .block_size = 8192,
  26                 .cluster_size = 8,
  27                 .clear_dev = 0
  28         };
  29
  30         while (1)
  31         {
  32                 int c;
  33
  34                 c = getopt(argc, argv, "b:c:x");
  35                 if (c == -1)
  36                         break;
  37
  38                 switch(c)
  39                 {
  40                         case 'b':
  41                                 config.block_size = atoi(optarg);
  42                                 break;
  43                         case 'c':
  44                                 config.cluster_size = atoi(optarg);
  45                                 break;
  46                         case 'x':
  47                                 config.clear_dev = 1;
  48                                 break;
  49                 }
  50         }
  51
  52         if (argc - optind < 1)
  53         {
  54                 fprintf(stderr, "Usage: %s [options] <device>\n", argv[0]);
  55                 exit(1);
  56         }
  57
  58         dev = argv[optind];
  59
  60         if (!get_disk_size(dev, &size))
  61         {
  62                 fprintf(stderr, "Could not get size of disk %s\n",
  63                                 argv[optind]);
  64                 exit(1);
  65         }
  66
  67         printf("Creating a new fs on dev %s (%lld blks)\n", dev, size/512);
  68
  69         printf("Warning: this could kill some important data; Are you sure? ");
  70         char ch = getchar();
  71
  72         if (ch != 'y')
  73                 exit(0);
  74
  75         fp = fopen(dev, "r+");
  76         if (!fp)
  77         {
  78                 perror("mkomfs: ");
  79                 exit(2);
  80         }
  81
  82         create_fs(fp, size/512, &config);
  83         fclose(fp);
  84         return 0;
  85 }