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

NAME

t_getstate - get the current state

SYNOPSIS

#include <xti.h>


int t_getstate(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.


The t_getstate() function returns the current state of the provider
associated with the transport endpoint specified by fd.

RETURN VALUES

State is returned upon successful completion. Otherwise, a value of -1
is returned and t_errno is set to indicate an error. The current state
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 direction orderly release sent.


T_INREL
Incoming direction orderly release received.


If the provider is undergoing a state transition when t_getstate() is
called, the function will fail.

ERRORS

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

TBADF
The specified file descriptor does not refer to a transport
endpoint.


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 provider is undergoing a transient 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(7) for descriptions of the following attributes:


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

SEE ALSO

t_open(3NSL), attributes(7)

May 7, 1998 T_GETSTATE(3NSL)