SCF_Session_close(3SMARTCARD)				    Smartcard Library Functions 			     SCF_Session_close(3SMARTCARD)

NAME

       SCF_Session_close, SCF_Terminal_close, SCF_Card_close - close a smartcard session, terminal, or card

SYNOPSIS

       cc [ flag... ] file... -lsmartcard [ library...]
       #include <smartcard/scf.h>

       SCF_Status_t SCF_Session_close(SCF_Session_t session);

       SCF_Status_t SCF_Terminal_close(SCF_Terminal_t terminal);

       SCF_Status_t SCF_Card_close(SCF_Card_t card);

PARAMETERS

       card	       An object that was returned from SCF_Terminal_getCard(3SMARTCARD)

       session	       An object that was returned from SCF_Session_getSession(3SMARTCARD)

       terminal        An object that was returned from SCF_Session_getTerminal(3SMARTCARD)

DESCRIPTION

       These  functions  release the resources (memory, threads, and others) that were allocated within the library when the session, terminal, or
       card was opened. Any storage allocated by calls	to  SCF_Session_getInfo(3SMARTCARD),  SCF_Terminal_getInfo(3SMARTCARD),  or  SCF_Card_get-
       Info(3SMARTCARD) is deallocated when the associated object is closed. Attempts to access results from these interfaces after the object has
       been closed results in undefined behavior.

       If a card that was locked by SCF_Card_lock(3SMARTCARD) is closed, the lock is automatically released. When a terminal is closed, any  event
       listeners  on that terminal object are removed and any cards that were obtained with the terminal are closed.  Similarly, closing a session
       will close any terminals or cards obtained with that session. These are the only cases where  the  library  will  automatically	perform  a
       close.

       Once  closed,  a  session,  terminal,  or card object can no longer be used by an SCF function. Any attempt to do so results in an SCF_STA-
       TUS_BADHANDLE error. The sole exception is that closing an object, even if already closed, is always a successful operation.

RETURN VALUES

       Closing a handle is always a successful operation that returns SCF_STATUS_SUCCESS. The library can safely detect handles that  are  invalid
       or already closed.

EXAMPLES

       Example 1: Close each object explicitly.

       SCF_Status_t status;
       SCF_Session_t mySession;
       SCF_Terminal_t myTerminal;
       SCF_Card_t myCard;

       status = SCF_Session_getSession(&mySession);
       if (status != SCF_STATUS_SUCCESS) exit(1);
       status = SCF_Session_getTerminal(mySession, NULL, &myTerminal);
       if (status != SCF_STATUS_SUCCESS) exit(1);
       status = SCF_Terminal_getCard(myTerminal, &myCard);
       if (status != SCF_STATUS_SUCCESS) exit(1);

       /* (Do interesting things with smartcard...) */

       SCF_Card_close(myCard);
       SCF_Terminal_close(myTerminal);
       SCF_Session_close(mySession);

       Example 2: Allow the library to close objects.

       SCF_Status_t status;
       SCF_Session_t mySession;
       SCF_Terminal_t myTerminal;
       SCF_Card_t myCard;

       status = SCF_Session_getSession(&mySession);
       if (status != SCF_STATUS_SUCCESS) exit(1);
       status = SCF_Session_getTerminal(mySession, NULL, &myTerminal);
       if (status != SCF_STATUS_SUCCESS) exit(1);
       status = SCF_Terminal_getCard(myTerminal, &myCard);
       if (status != SCF_STATUS_SUCCESS) exit(1);

       /* (Do interesting things with smartcard...) */

       SCF_Session_close(mySession);
       /* myTerminal and myCard have been closed by the library. */

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libsmartcard(3LIB),    SCF_Card_getInfo(3SMARTCARD),    SCF_Card_lock(3SMARTCARD),   SCF_Session_getInfo(3SMARTCARD),   SCF_Session_getSes-
       sion(3SMARTCARD), SCF_Session_getTerminal(3SMARTCARD), SCF_Terminal_getCard(3SMARTCARD), SCF_Terminal_getInfo(3SMARTCARD), attributes(5)

SunOS 5.10							    14 May 2002 				     SCF_Session_close(3SMARTCARD)