SC_LOCK(3)
NAME
sc_lock - Lock a card for exclusive use
SYNOPSIS
#include <opensc.h> int sc_lock(struct sc_card *card);
DESCRIPTION
This function locks the card against modification from other threads or
processes. The function may be called several times; a counter will be
increased, and the card will be unlocked only when this counter reaches
zero.
RETURN VALUE
- Returns 0 on success, or a negative value in case of error.