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AIX Version 4.3 Communications Technical Reference, Volume 1

xdr_setpos Macro


Changes the current position in the XDR stream.


C Library (libc.a)


#include <rpc/xdr.h>
xdr_setpos (xdrs, pos)
XDR *xdrs;
u_int pos;


The xdr_setpos macro invokes the set-position routine associated with the eXternal Data Representation (XDR) stream pointed to by the xdrs parameter. The new position setting is obtained from the xdr_getpos macro. The xdr_setpos macro returns a value of false if the set position is not valid or if the requested position is out of bounds.

A position cannot be set in some XDR streams. Trying to set a position in such streams causes the macro to fail. This macro also fails if the programmer requests a position that is not in the stream's boundaries.


xdrs Points to the XDR stream handle.
pos Specifies a position value obtained from the xdr_getpos macro.

Return Values

Upon successful completion (if the stream is positioned successfully), this macro returns a value of 1. If unsuccessful, it returns a value of 0.

Implementation Specifics

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

Related Information

The xdr_getpos macro.

List of XDR Programming References.

eXternal Data Representation (XDR) Overview for Programming and Understanding XDR Non-Filter Primitives in AIX Version 4.3 Communications Programming Concepts.

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