ultrix man page for t_sync

t_sync(3xti)															      t_sync(3xti)

Name
       t_sync - synchronize transport library

Syntax
       #include <xti.h>

       int t_sync(fd)
       int fd;

Arguments
       fd	 Identifies the local transport endpoint.

Description
       For  the  transport  endpoint  specified by fd, synchronizes the data structures managed by the transport library with information from the
       underlying transport provider. In doing so, can convert an uninitialized file descriptor to an initialized transport endpoint, by  updating
       and allocating the necessary library data structures. The file descriptor, which is assumed to have referenced a transport endpoint, has to
       be obtained by means of an or be the result of a fork and The function also allows two cooperating processes to synchronize their  interac-
       tion with a transport provider.

       For  example, if a process forks a new process and issues an the new process must issue a to build the private library data structure asso-
       ciated with a transport endpoint and to synchronize the data structure with the relevant provider information.

       It is important to remember that the transport provider treats all users of a transport endpoint as a single user.  If  multiple  processes
       are  using the same endpoint, they should coordinate their activates so as not to violate the state of the transport endpoint. The function
       returns the current state of the transport endpoint to the user, thereby enabling the user  to  verify  the  state  before  taking  further
       action.	This  coordination  is valid only among cooperating processes; it is possible that a process or an incoming event could change the
       endpoint's state after a is issued.

       --------------------------------------
       Parameters   Before Call   After Call
       --------------------------------------
       fd	    x		  /
       --------------------------------------

Return Values
       Upon successful completion, returns the state of the transport endpoint. On failure, a value of -1 is returned, and t_errno is set to indi-
       cate the error. The state returned is one of the following:

       T_IDLE	 Idle

       T_OUTCON  Outgoing connection pending

       T_INCON	 Incoming connection pending

       T_DATAXFER
		 Data transfer

       T_OUTREL  Outgoing orderly release (waiting for an orderly release indication).

       T_INREL	 Incoming orderly release (waiting for an orderly release request)

Diagnostics
       On failure, t_errno is set to one of the following:

       [TBADF]		   The	specified file descriptor does not refer to a transport endpoint.  This error may be returned when the fd has been
			   previously closed or an erroneous number may have been passed to the call.

       [TSTATECHNG]	   The transport endpoint is undergoing a state change.

       [TSYSERR]	   A system error has occurred during execution of this function.

See Also
       dup(2), exec(2), fork(2), open(2)

																      t_sync(3xti)