14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*8462SApril.Chin@Sun.COM * Copyright (c) 1985-2008 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 7*8462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #include "sfdchdr.h" 234887Schin 244887Schin /* Make a stream op return immediately on interrupts. 254887Schin ** This is useful on slow streams (hence the name). 264887Schin ** 274887Schin ** Written by Glenn Fowler (03/18/1998). 284887Schin */ 294887Schin 304887Schin #if __STD_C 314887Schin static int slowexcept(Sfio_t* f, int type, Void_t* v, Sfdisc_t* disc) 324887Schin #else 334887Schin static int slowexcept(f, type, v, disc) 344887Schin Sfio_t* f; 354887Schin int type; 364887Schin Void_t* v; 374887Schin Sfdisc_t* disc; 384887Schin #endif 394887Schin { 404887Schin NOTUSED(f); 414887Schin NOTUSED(v); 424887Schin NOTUSED(disc); 434887Schin 444887Schin switch (type) 454887Schin { 464887Schin case SF_FINAL: 474887Schin case SF_DPOP: 484887Schin free(disc); 494887Schin break; 504887Schin case SF_READ: 514887Schin case SF_WRITE: 524887Schin if (errno == EINTR) 534887Schin return(-1); 544887Schin break; 554887Schin } 564887Schin 574887Schin return(0); 584887Schin } 594887Schin 604887Schin #if __STD_C 614887Schin int sfdcslow(Sfio_t* f) 624887Schin #else 634887Schin int sfdcslow(f) 644887Schin Sfio_t* f; 654887Schin #endif 664887Schin { 674887Schin Sfdisc_t* disc; 684887Schin 694887Schin if(!(disc = (Sfdisc_t*)malloc(sizeof(Sfdisc_t))) ) 704887Schin return(-1); 714887Schin 724887Schin disc->readf = NIL(Sfread_f); 734887Schin disc->writef = NIL(Sfwrite_f); 744887Schin disc->seekf = NIL(Sfseek_f); 754887Schin disc->exceptf = slowexcept; 764887Schin 774887Schin if(sfdisc(f,disc) != disc) 784887Schin { free(disc); 794887Schin return(-1); 804887Schin } 814887Schin 824887Schin return(0); 834887Schin } 84