fatinfo.c

/*
 * Program to print information about a FAT file system.
 */
#include <stdio.h>

#include "fatfs.h"
#include "wordio.h"
#include "blockio.h"
#include "directory.h"

/*
 * Function to print information about a FAT filesystem (useful for debugging).
 */
void print_filesystem_info(const filesystem_info *fsinfo)
{
    printf ("Sector size: %zu\n", fsinfo->sector_size);
    printf ("Cluster size in sectors: %u\n", fsinfo->cluster_size);
    printf ("Root directory size (nb of entries): %u\n", fsinfo->rootdir_size);

    printf ("Sectors per fat: %u\n", fsinfo->sectors_per_fat);
    printf ("Reserved sectors: %u\n", fsinfo->reserved_sectors);
    printf ("Hidden sectors: %u\n", fsinfo->hidden_sectors);

    printf ("Fat offset in sectors: %u\n", fsinfo->fat_offset);
    printf ("Root directory offset in sectors: %u\n", fsinfo->rootdir_offset);
    printf ("First cluster offset in sectors: %u\n", fsinfo->cluster_offset + (2 * fsinfo->cluster_size));
}

/*
 * Main function.
 */
int main(int argc, char *argv[])
{
    void * mem = open_filesystem(argc, argv);
    int i;

    filesystem_info *fsinfo = initialize_filesystem_info(mem);
    print_filesystem_info(fsinfo);
    putchar('\n');

    char root[2] = {'\\', '\0'};
    // print all the files and directories!
    print_directory(fsinfo, (fsinfo->rootdir_offset), &root[0]);
}