Technical Reference: Communications, Volume 2

strqget Utility

Purpose

Obtains information about a queue or band of the queue.

Syntax

int strqget(q, what, pri, valp) register queue_t * q; qfields_t what; register unsigned char pri; long * valp;

Description

The strqget utility allows modules and drivers to get information about a queue or particular band of the queue. The information is returned in the valp parameter. The fields that can be obtained are defined as follows:

This utility is part of STREAMS Kernel Extensions.

typedef enum qfileds {
        QHIWAT   = 0,
        QLOWAT   = 1,
        QMAXPSZ  = 2,
        QMINPSZ  = 3,
        QCOUNT   = 4,
        QFIRST   = 5,
        QLAST    = 6,
        QFLAG    = 7,
        QBAD     = 8
} qfields_t;

Parameters

q	Specifies the queue about which to get information.
what	Specifies the information to get from the queue.
pri	Specifies the priority band about which to get information.
valp	Contains the requested information on return.

Return Values

On success, the strqget utility returns a value of 0. Otherwise, it returns an error number.

Related Information

List of Streams Programming References, Understanding STREAMS Messages in AIX 5L Version 5.2 Communications Programming Concepts.