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/*
* SCCS: @(#)nbio.c 1.6 (96/11/04)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1992 X/Open Company Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/************************************************************************
SCCS: @(#)nbio.c 1.6 96/11/04 TETware release 3.3
NAME: nbio.c
PRODUCT: TETware
AUTHOR: Denis McConalogue, UniSoft Ltd.
DATE CREATED: May 1993
DESCRIPTION:
function to establish non-blocking i/o on an XTI file descriptor
endpoint.
MODIFICATIONS:
Andrew Dingwall, UniSoft Ltd., February 1994
moved the ioctl() call from dtet2lib/fionbio.c to here
(this is to make dtet2lib POSIX-clean)
Andrew Dingwall, UniSoft Ltd., February 1995
changed to use O_NONBLOCK since XTI may not support FIONBIO
************************************************************************/
#include <fcntl.h>
#include <sys/types.h>
#include <xti.h>
#include <errno.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "tptab_xt.h"
#include "xtilib_xt.h"
#include "error.h"
#include "ltoa.h"
/*
** tet_ts_nbio() - establish non-blocking i/o on an XTI fd
**
** return 0 if successful or -1 on error
*/
int tet_ts_nbio(pp)
register struct ptab *pp;
{
register int fd = ((struct tptab *) pp->pt_tdata)->tp_fd;
int flags;
if ((flags = fcntl(fd, F_GETFL, 0)) < 0) {
error(errno, "can't get file status flags on fd", tet_i2a(fd));
return(-1);
}
flags |= O_NONBLOCK;
if (fcntl(fd, F_SETFL, flags) < 0) {
error(errno, "can't set file status flags on fd", tet_i2a(fd));
return(-1);
}
pp->pt_flags |= PF_NBIO;
return(0);
}
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