t_sync(3xti) [ultrix man page]

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)

t_sync(3NSL)					       Networking Services Library Functions					      t_sync(3NSL)

NAME

       t_sync - synchronize transport library

SYNOPSIS

       #include <xti.h>

       int t_sync(int fd);

DESCRIPTION

       This  routine is part of the XTI interfaces which evolved from the TLI interfaces. XTI represents the future evolution of these interfaces.
       However, TLI interfaces are supported for compatibility. When using a TLI routine that has the same name as an XTI routine,  the   tiuser.h
       header file must be used.  Refer to the	TLI COMPATIBILITY section for a description of differences between the two interfaces.

       For  the  transport  endpoint  specified by fd, t_sync() synchronizes the data structures managed by the transport library with information
       from the underlying transport provider. In doing so, it can convert an uninitialized file descriptor (obtained  by  means  of  a   open(2),
       dup(2) or as a result of a fork(2) and exec(2)) to an initialized transport endpoint, assuming that the file descriptor referenced a trans-
       port  endpoint, by updating and allocating the necessary library data structures. This function also allows two	cooperating  processes	to
       synchronize their interaction with a transport provider.

       For  example,  if  a  process forks a new process and issues an exec(2), the new process must issue a t_sync() to build the private library
       data structure associated 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 activities so as not to violate the state of the transport endpoint.  The func-
       tion t_sync() 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  only  valid among cooperating processes; it is possible that a process or an incoming event could
       change the endpoint's state after a t_sync() is issued.

       If the transport endpoint is undergoing a state transition when t_sync() is called, the function will fail.

RETURN VALUES

       On successful completion, the state of the transport endpoint is returned.  Otherwise, a value of  -1 is returned and  t_errno  is  set	to
       indicate an error. The state returned is one of the following:

       T_UNBND	      Unbound.

       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).

ERRORS

       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 previ-
		     ously closed or an erroneous number may have been passed to the call.

       TPROTO	     This error indicates that a communication problem has been detected between XTI and the transport provider for which there is
		     no other suitable XTI error (t_errno).

       TSTATECHNG    The transport endpoint is undergoing a state change.

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

TLI COMPATIBILITY

       The  XTI  and  TLI interface definitions have common names but use different header files. This, and other semantic differences between the
       two interfaces are described in the subsections below.

   Interface Header
       The XTI interfaces use the header file, xti.h. TLI interfaces should not use this header.  They should use the header:
	 #include <tiuser.h>

   Error Description Values
       The t_errno value that can be set by the XTI interface and cannot be set by the TLI interface is:
	 TPROTO

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dup(2), exec(2), fork(2), open(2), attributes(5)

SunOS 5.11							    7 May 1998							      t_sync(3NSL)