/* --------------------------------------------------------
 do_pwd: 
 *      recursively follow a pathname back to a root 
 * 
 *      base case: dir is a ROOT 
 *      if not base case: 
 *              (1) get_block and point DIR* dp to start 
                   of second block, which is ..
 *              (2) use dp to get parent's ino 
 *              (3) load parent MINODE using iget 
 *              (4) Recusively call do_pwd(parent) 
 *              (5) print / and directory name 
 -------------------------------------------------------------*/
void do_pwd(MINODE* dir)
{
    MINODE* parent; 
    int pino, ino;  
    char* cp; 
    DIR* dp; 
    char buf[BLOCK_SIZE]; 
    
    // (1) Base case: DIR is root 
    if(dir == root)
    {
        printf("/"); 
        return; 
    }
    
    // Read in i_block[0], 
    // which contains all of the directories contained in this DIR
    get_block(dir->dev, dir->INODE.i_block[0], buf); 
    
    // Point to the beginning of the datablock 
    cp = buf; 
    dp = (DIR*) cp; 
    
    // Get ino number of current directory 
    ino = dp->inode; 
    
    // go to second data block, get ino of .. 
    cp += dp->rec_len;            
    dp = (DIR* )cp; 
    
    // dp now points to .., the parent's directory 
    pino = dp->inode;           // get parent's ino
    
    // Load the parent MINODE*
    parent = iget(dir->dev, pino);
    
    // Call pwd with parent's MINODE pointer 
    do_pwd(parent);
    
    if(parent == NULL)
    {
        printf("Error: could not load MINODE %s", dp->name); 
        return; 
    }
    
    // (3) Print name followed by /
            // Search parent DIR for an entry with this ino 
            // Get the name associated with this ino 
    char* dirName = findmyname(parent, ino); 
    printf("%s/", dirName);
   
    iput(parent); 
}
char* find_name(MINODE *mip)
{
    int my_ino = 0;
    int parent_ino = 0;
    findino(mip, &my_ino, &parent_ino);

    MINODE* parent_mip = iget(running->cwd->device, parent_ino);

    char* my_name = NULL;
    findmyname(parent_mip, my_ino, &my_name);

    iput(parent_mip);
    return my_name;
}