248             /* just fill the FatFs[vol] in ff.c, or mkfs will failded!  in dfs_elm_mkfs()
330     int vol;  in dfs_elm_open()  local
338     vol = elm_get_vol((FATFS *)fs->data);  in dfs_elm_open()
339     if (vol < 0)  in dfs_elm_open()
345     rt_snprintf(drivers_fn, 256, "%d:%s", vol, file->path);  in dfs_elm_open()
641     int vol;  in dfs_elm_unlink()  local
646     vol = elm_get_vol((FATFS *)fs->data);  in dfs_elm_unlink()
647     if (vol < 0)  in dfs_elm_unlink()
653     rt_snprintf(drivers_fn, 256, "%d:%s", vol, path);  in dfs_elm_unlink()
673     int vol;  in dfs_elm_rename()  local
677     vol = elm_get_vol((FATFS *)fs->data);  in dfs_elm_rename()
678     if (vol < 0)  in dfs_elm_rename()
686     rt_snprintf(drivers_oldfn, 256, "%d:%s", vol, oldpath);  in dfs_elm_rename()
707     int vol;  in dfs_elm_stat()  local
712     vol = elm_get_vol((FATFS *)fs->data);  in dfs_elm_stat()
713     if (vol < 0)  in dfs_elm_stat()
719     rt_snprintf(drivers_fn, 256, "%d:%s", vol, path);  in dfs_elm_stat()