recursive open dir

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include <dirent.h>
#include <limits.h>
#include <unistd.h>


static void
list_dir (char * dir2find)
{
 DIR *d;
 char *dir_name=(char *)malloc(sizeof(char)*512);

  if( *(dir2find+0) != '/')
  {
   getcwd(dir_name, 512);
   strncat(dir_name,"/",512);
  }
  strncat(dir_name,dir2find,512);
  d=opendir(dir_name);

    if(!d)
    {
     fprintf(stderr, "Cannot open directory '%s': %s\n", dir_name, strerror (errno));
     exit(EXIT_FAILURE);
    }

    while(1)
    {
     struct dirent *entry;
     const char *d_name;

      entry = readdir(d);

      if(!entry)
       break;

      d_name = entry->d_name;

      fprintf (stdout,"%s/%s\n", dir_name, d_name);



      if(entry->d_type & DT_DIR)
      {
       if(*(d_name+0)!='.')
       {
        int path_length;
        char path[PATH_MAX];

        path_length = snprintf(path, PATH_MAX, "%s/%s", dir_name, d_name);
        fprintf(stdout,"Dir : %s \n",path);

        if(path_length >= PATH_MAX)
        {
         fprintf (stderr, "Path length has got too long.\n");
         exit (EXIT_FAILURE);
        }
        list_dir(path);
       }
      }
    }

    if(closedir(d))
    {
     fprintf (stderr, "Could not close '%s': %s\n",dir_name, strerror (errno));
     exit (EXIT_FAILURE);
    }

 free(dir_name);
}

int main ()
{

    list_dir ("TEST");
    return 0;
}