OpenSC API Referencesc_check_sw3openscsc_check_swCheck return status from a card transactionSynopsis
#include <opensc.h>
int sc_check_sw(struct sc_card *card, int sw1, int sw2);
Description
This function checks the return status as given in sw1
and sw2 against the card-specific errors of
card. These are set by sc_transmit_apdu() in the
apdu.sw1 and apdu.sw2
fields, respectively.
The function should be called after every APDU transmission, to convert the
card's status code to an OpenSC error code.
Return value
Returns 0 if successful, or a negative value in case of error.