Technical Reference: Communications, Volume 1

xdr_array Subroutine

Purpose

Translates between variable-length arrays and their corresponding external representations.

Syntax

#include <rpc/xdr.h>

xdr_array (xdrs, arrp, sizep, maxsize, elsize, elproc) XDR * xdrs; char ** arrp; u_int * sizep; u_int maxsize; u_int elsize; xdrproc_t elproc;

The xdr_array subroutine is a filter primitive that translates between variable-length arrays and their corresponding external representations. This subroutine is called to encode or decode each element of the array.

Parameters

xdrs	Points to the eXternal Data Representation (XDR) stream handle.
arrp	Specifies the address of the pointer to the array. If the arrp parameter is null when the array is being deserialized, the XDR program allocates an array of the appropriate size and sets the parameter to that array.
sizep	Specifies the address of the element count of the array. The element count cannot exceed the value for the maxsize parameter.
maxsize	Specifies the maximum number of array elements.
elsize	Specifies the byte size of each of the array elements.
elproc	Translates between the C form of the array elements and their external representations. This parameter is an XDR filter.

Return Values

Upon successful completion, this subroutine returns a value of 1. If unsuccessful, it returns a value of 0.

Implementation Specifics

This subroutine is part of Base Operating System (BOS) Runtime.

Related Information

List of XDR Programming References.

eXternal Data Representation (XDR) Overview for Programming and Understanding XDR Library Filter Primitives in AIX 5L Version 5.1 Communications Programming Concepts.