UNIX for Dummies Questions & Answers

void getFiles(int siz, char *root, char *infor)
{
DIR *d;
  struct dirent *ent;
  struct stat inode;
  
  
  if ((d = opendir (root)) != NULL)
  {
    chdir (root);

    while(ent=readdir(d))
    {

     
     lstat (ent->d_name, &inode);


      if (S_ISDIR(inode.st_mode) && strcmp(ent->d_name, ".") && strcmp(ent->d_name, ".."))
      {
        
        getFiles(siz, ent->d_name, infor);
        chdir("..");
        
      } //if
    } //while

  } //if
}

int main() 
{
    char root[256];
    char buffer[125];
    
    struct sockaddr_in cli, serv;
    int sfd; 
    char result[1024];
    char infor[1024];
    char size[10];
    int siz;
    int siz_cli = sizeof(cli);
    int siz_serv = sizeof(serv);
    //////////////////////////////////////////////
    serv.sin_family = AF_INET;
    
    serv.sin_port = 5556;
    serv.sin_addr.s_addr = inet_addr("127.0.0.1"); 
    /////////////////////////////////////////////
    sfd = socket(AF_INET, SOCK_DGRAM, 0); 
    
    int vbleBind = bind(sfd, (struct sockaddr*) &serv, siz_serv);
    if(vbleBind == -1)
    {
        perror("error \n");
        return 0;
    }
    else
    {
     while( 1 )
     {
        
        if( (recvfrom(sfd, size, 10, 0,(struct sockaddr *) &cli, &siz_cli) ) < 0)
        
        {
            perror("error \n");
            return 0;
        }
        else
        {
        
        siz=atoi(size);
        
        system("pwd>root");
        int fd=open("root", O_RDWR, 644);

        while( read(fd, buffer, 4) > 0 )
        {
        strcat(root,buffer);
        }
        
        
        getFiles(siz, root, infor);
        
         sendto(sfd, result, 1024, 0, (struct sockaddr *) &cli, siz_cli);
         close(fd);
         }
    }//while
    
    close(sfd);
  }//else
}