/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1985-2008 AT&T Intellectual Property * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Intellectual Property * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * Information and Software Systems Research * * AT&T Research * * Florham Park NJ * * * * Glenn Fowler <gsf@research.att.com> * * David Korn <dgk@research.att.com> * * Phong Vo <kpv@research.att.com> * * * ***********************************************************************/ #include "sfdchdr.h" /* Make a stream op return immediately on interrupts. ** This is useful on slow streams (hence the name). ** ** Written by Glenn Fowler (03/18/1998). */ #if __STD_C static int slowexcept(Sfio_t* f, int type, Void_t* v, Sfdisc_t* disc) #else static int slowexcept(f, type, v, disc) Sfio_t* f; int type; Void_t* v; Sfdisc_t* disc; #endif { NOTUSED(f); NOTUSED(v); NOTUSED(disc); switch (type) { case SF_FINAL: case SF_DPOP: free(disc); break; case SF_READ: case SF_WRITE: if (errno == EINTR) return(-1); break; } return(0); } #if __STD_C int sfdcslow(Sfio_t* f) #else int sfdcslow(f) Sfio_t* f; #endif { Sfdisc_t* disc; if(!(disc = (Sfdisc_t*)malloc(sizeof(Sfdisc_t))) ) return(-1); disc->readf = NIL(Sfread_f); disc->writef = NIL(Sfwrite_f); disc->seekf = NIL(Sfseek_f); disc->exceptf = slowexcept; if(sfdisc(f,disc) != disc) { free(disc); return(-1); } return(0); }