1N/A/***********************************************************************
1N/A* *
1N/A* This software is part of the ast package *
1N/A* Copyright (c) 1985-2011 AT&T Intellectual Property *
1N/A* and is licensed under the *
1N/A* Common Public License, Version 1.0 *
1N/A* by AT&T Intellectual Property *
1N/A* *
1N/A* A copy of the License is available at *
1N/A* http://www.opensource.org/licenses/cpl1.0.txt *
1N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
1N/A* *
1N/A* Information and Software Systems Research *
1N/A* AT&T Research *
1N/A* Florham Park NJ *
1N/A* *
1N/A* Glenn Fowler <gsf@research.att.com> *
1N/A* David Korn <dgk@research.att.com> *
1N/A* Phong Vo <kpv@research.att.com> *
1N/A* *
1N/A***********************************************************************/
1N/A#include "sfdchdr.h"
1N/A
1N/A/* Make a stream op return immediately on interrupts.
1N/A** This is useful on slow streams (hence the name).
1N/A**
1N/A** Written by Glenn Fowler (03/18/1998).
1N/A*/
1N/A
1N/A#if __STD_C
1N/Astatic int slowexcept(Sfio_t* f, int type, Void_t* v, Sfdisc_t* disc)
1N/A#else
1N/Astatic int slowexcept(f, type, v, disc)
1N/ASfio_t* f;
1N/Aint type;
1N/AVoid_t* v;
1N/ASfdisc_t* disc;
1N/A#endif
1N/A{
1N/A NOTUSED(f);
1N/A NOTUSED(v);
1N/A NOTUSED(disc);
1N/A
1N/A switch (type)
1N/A {
1N/A case SF_FINAL:
1N/A case SF_DPOP:
1N/A free(disc);
1N/A break;
1N/A case SF_READ:
1N/A case SF_WRITE:
1N/A if (errno == EINTR)
1N/A return(-1);
1N/A break;
1N/A }
1N/A
1N/A return(0);
1N/A}
1N/A
1N/A#if __STD_C
1N/Aint sfdcslow(Sfio_t* f)
1N/A#else
1N/Aint sfdcslow(f)
1N/ASfio_t* f;
1N/A#endif
1N/A{
1N/A Sfdisc_t* disc;
1N/A
1N/A if(!(disc = (Sfdisc_t*)malloc(sizeof(Sfdisc_t))) )
1N/A return(-1);
1N/A
1N/A disc->readf = NIL(Sfread_f);
1N/A disc->writef = NIL(Sfwrite_f);
1N/A disc->seekf = NIL(Sfseek_f);
1N/A disc->exceptf = slowexcept;
1N/A
1N/A if(sfdisc(f,disc) != disc)
1N/A { free(disc);
1N/A return(-1);
1N/A }
1N/A
1N/A return(0);
1N/A}