1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 24 #include <ast.h> 25 26 #if !_UWIN 27 28 void _STUB_stdfun(){} 29 30 #else 31 32 #include <ast_windows.h> 33 #include <uwin.h> 34 #include <dlfcn.h> 35 #include "FEATURE/uwin" 36 37 #if _lib___iob_func 38 #define IOB ((char*)__iob_func()) 39 #elif _dat__iob 40 #define IOB ((char*)_iob) 41 #else 42 #define IOB ((char*)__p__iob()) 43 #endif 44 45 #define IOBMAX (512*32) 46 47 #include "stdhdr.h" 48 49 int 50 _stdfun(Sfio_t* f, Funvec_t* vp) 51 { 52 static char* iob; 53 static int init; 54 static void* bp; 55 static void* np; 56 57 if (!iob && !(iob = IOB)) 58 return 0; 59 if (f && ((char*)f < iob || (char*)f > iob+IOBMAX)) 60 return 0; 61 if (!vp->vec[1]) 62 { 63 if (!init) 64 { 65 init = 1; 66 bp = dlopen("/usr/bin/stdio.dll", 0); 67 } 68 if (bp && (vp->vec[1] = (Fun_f)dlsym(bp, vp->name))) 69 return 1; 70 if (!np && !(np = dlopen("/sys/msvcrt.dll", 0))) 71 return -1; 72 if (!(vp->vec[1] = (Fun_f)dlsym(np, vp->name))) 73 return -1; 74 } 75 return 1; 76 } 77 78 #endif 79