The f_stat function checks the existence of a file or sub-directory.
FRESULT f_stat ( const TCHAR* path, /* [IN] Object name */ FILINFO* fno /* [OUT] FILINFO structure */ );
FR_OK, FR_DISK_ERR, FR_INT_ERR, FR_NOT_READY, FR_NO_FILE, FR_NO_PATH, FR_INVALID_NAME, FR_INVALID_DRIVE, FR_NOT_ENABLED, FR_NO_FILESYSTEM, FR_TIMEOUT, FR_NOT_ENOUGH_CORE
The f_stat function checks the existence of a file or sub-directory in the directory. If it is not exist, the function returns with FR_NO_FILE. If it is exist, the function returns with FR_OK and the informations about the object, size, timestamp and attribute, is stored to the file information structure. For details of the file information, refer to the FILINFO structure and f_readdir function.
Note that the file information comes from the meta data in the directory. If the file has been opend and modified, the file will need to be synched or closed in order to obtain the latest file information.
Available when FF_FS_MINIMIZE == 0.
FRESULT fr;
FILINFO fno;
const char *fname = "file.txt";
printf("Test for \"%s\"...\n", fname);
fr = f_stat(fname, &fno);
switch (fr) {
case FR_OK:
printf("Size: %lu\n", fno.fsize);
printf("Timestamp: %u-%02u-%02u, %02u:%02u\n",
(fno.fdate >> 9) + 1980, fno.fdate >> 5 & 15, fno.fdate & 31,
fno.ftime >> 11, fno.ftime >> 5 & 63);
printf("Attributes: %c%c%c%c%c\n",
(fno.fattrib & AM_DIR) ? 'D' : '-',
(fno.fattrib & AM_RDO) ? 'R' : '-',
(fno.fattrib & AM_HID) ? 'H' : '-',
(fno.fattrib & AM_SYS) ? 'S' : '-',
(fno.fattrib & AM_ARC) ? 'A' : '-');
break;
case FR_NO_FILE:
printf("\"%s\" is not exist.\n", fname);
break;
default:
printf("An error occured. (%d)\n", fr);
}