fsck/main.c

   1 /*
   2  *  main.c
   3  *  exFAT file system checker.
   4  *
   5  *  Created by Andrew Nayenko on 02.09.09.
   6  *  This software is distributed under the GNU General Public License
   7  *  version 3 or any later.
   8  */
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <exfat.h>
  13 #include <exfatfs.h>
  14 #include <inttypes.h>
  15
  16 #define exfat_debug(format, ...)
  17
  18 #define MB (1024 * 1024)
  19
  20 uint64_t files_count, directories_count;
  21
  22 static uint64_t bytes2mb(uint64_t bytes)
  23 {
  24         return (bytes + MB / 2) / MB;
  25 }
  26
  27 static void sbck(const struct exfat* ef)
  28 {
  29         const uint32_t block_size = (1 << ef->sb->block_bits); /* in bytes */
  30         const uint32_t cluster_size = CLUSTER_SIZE(*ef->sb); /* in bytes */
  31         const uint64_t total = le32_to_cpu(ef->sb->cluster_count) * cluster_size;
  32
  33 #if 0 /* low-level info */
  34         printf("First block           %8"PRIu64"\n",
  35                         le64_to_cpu(ef->sb->block_start));
  36         printf("Blocks count          %8"PRIu64"\n",
  37                         le64_to_cpu(ef->sb->block_count));
  38         printf("FAT first block       %8u\n",
  39                         le32_to_cpu(ef->sb->fat_block_start));
  40         printf("FAT blocks count      %8u\n",
  41                         le32_to_cpu(ef->sb->fat_block_count));
  42         printf("First cluster block   %8u\n",
  43                         le32_to_cpu(ef->sb->cluster_block_start));
  44         printf("Clusters count        %8u\n",
  45                         le32_to_cpu(ef->sb->cluster_count));
  46         printf("First cluster of root %8u\n",
  47                         le32_to_cpu(ef->sb->rootdir_cluster));
  48 #endif
  49         printf("Block size            %8u bytes\n", block_size);
  50         printf("Cluster size          %8u bytes\n", cluster_size);
  51         printf("Total space           %8"PRIu64" MB\n", bytes2mb(total));
  52         printf("Used space            %8"PRIu64" MB (%hhu%%)\n",
  53                         bytes2mb(total * ef->sb->allocated_percent / 100),
  54                         ef->sb->allocated_percent);
  55         printf("Free space            %8"PRIu64" MB (%hhu%%)\n",
  56                         bytes2mb(total * (100 - ef->sb->allocated_percent) / 100),
  57                         100 - ef->sb->allocated_percent);
  58 }
  59
  60 static void dirck(struct exfat* ef, const char* path)
  61 {
  62         struct exfat_node* parent;
  63         struct exfat_node* node;
  64         struct exfat_iterator it;
  65         char subpath[EXFAT_NAME_MAX + 1];
  66
  67         if (exfat_lookup(ef, &parent, path) != 0)
  68                 exfat_bug("directory `%s' is not found", path);
  69         if (!(parent->flags & EXFAT_ATTRIB_DIR))
  70                 exfat_bug("`%s' is not a directory (0x%x)", path, parent->flags);
  71
  72         exfat_opendir(parent, &it);
  73         while (exfat_readdir(ef, parent, &node, &it) == 0)
  74         {
  75                 strcpy(subpath, path);
  76                 strcat(subpath, "/");
  77                 exfat_get_name(node, subpath + strlen(subpath),
  78                                 EXFAT_NAME_MAX - strlen(subpath));
  79                 exfat_debug("%s: %s, %llu bytes, cluster %u", subpath,
  80                                 IS_CONTIGUOUS(*node) ? "contiguous" : "fragmented",
  81                                 node->size, node->start_cluster);
  82                 if (node->flags & EXFAT_ATTRIB_DIR)
  83                 {
  84                         directories_count++;
  85                         dirck(ef, subpath);
  86                 }
  87                 else
  88                         files_count++;
  89                 exfat_put_node(node);
  90         }
  91         exfat_closedir(&it);
  92         exfat_put_node(parent);
  93 }
  94
  95 static void fsck(struct exfat* ef)
  96 {
  97         sbck(ef);
  98         dirck(ef, "");
  99 }
 100
 101 int main(int argc, char* argv[])
 102 {
 103         struct exfat ef;
 104
 105         if (argc != 2)
 106         {
 107                 fprintf(stderr, "usage: %s <spec>\n", argv[0]);
 108                 return 1;
 109         }
 110         printf("exfatck %u.%u\n",
 111                         EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR);
 112
 113         if (exfat_mount(&ef, argv[1]) != 0)
 114                 return 1;
 115
 116         printf("Checking file system on %s.\n", argv[1]);
 117         fsck(&ef);
 118         exfat_unmount(&ef);
 119         printf("Totally %"PRIu64" directories and %"PRIu64" files.\n",
 120                         directories_count, files_count);
 121
 122         fputs("File system checking finished: ", stdout);
 123         if (exfat_errors == 0)
 124                 puts("seems OK.");
 125         else
 126                 printf("%d ERROR%s FOUND!!!\n", exfat_errors,
 127                                 exfat_errors > 1 ? "S WERE" : " WAS");
 128         return 0;
 129 }