16     FRESULT fr;  in delete_node()  local
20     fr = f_opendir(&dir, path); /* Open the sub-directory to make it empty */  in delete_node()
21     if (fr != FR_OK) return fr;  in delete_node()
27         fr = f_readdir(&dir, fno);  /* Get a directory item */  in delete_node()
28         if (fr != FR_OK || !fno->fname[0]) break;   /* End of directory? */  in delete_node()
32                 fr = 100; break;    /* Fails with 100 when buffer overflow */  in delete_node()
37             fr = delete_node(path, sz_buff, fno);  in delete_node()
39             fr = f_unlink(path);  in delete_node()
41         if (fr != FR_OK) break;  in delete_node()
47     if (fr == FR_OK) fr = f_unlink(path);  /* Delete the empty sub-directory */  in delete_node()
48     return fr;  in delete_node()
56     FRESULT fr;  in main()  local
68     fr = delete_node(buff, sizeof buff / sizeof buff[0], &fno);  in main()
71     if (fr) {  in main()
72         _tprintf(_T("Failed to delete the directory. (%u)\n"), fr);  in main()
73         return fr;  in main()