NAME
sc_read_record - Read a record from a file
SYNOPSIS
#include <opensc.h>
int sc_read_record(struct sc_card *card, unsigned int record,
unsigned char *buf, size_t buflen,
unsigned long flags);
DESCRIPTION
This function reads a record-structured elementary file (EF) from card.
The function corresponds to the ISO 7816 READ RECORD function. Call
sc_select_file() first to select the file to read from.
record specifies the ID of the record to be read, or, if flags is set
to SC_RECORD_BY_REC_NR, the record number. If record is set to zero,
the current record will be read.
The read data is stored in buf, which is buflen bytes long.
RETURN VALUE
Returns the number of bytes read if successful, or a negative value in
case of error.