1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2009 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 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 _lib___p__iob 40 #define IOB ((char*)__p__iob()) 41 #elif _dat__iob 42 #define IOB ((char*)_iob) 43 #else 44 #define IOB ((char*)_p__iob()) 45 #endif 46 47 #define IOBMAX (512*32) 48 49 #include "stdhdr.h" 50 51 int 52 _stdfun(Sfio_t* f, Funvec_t* vp) 53 { 54 static char* iob; 55 static int init; 56 static void* bp; 57 static void* np; 58 59 if (!iob && !(iob = IOB)) 60 return 0; 61 if (f && ((char*)f < iob || (char*)f > iob+IOBMAX)) 62 return 0; 63 if (!vp->vec[1]) 64 { 65 if (!init) 66 { 67 init = 1; 68 bp = dlopen("/usr/bin/stdio.dll", 0); 69 } 70 if (bp && (vp->vec[1] = (Fun_f)dlsym(bp, vp->name))) 71 return 1; 72 if (!np && !(np = dlopen("/sys/msvcrt.dll", 0))) 73 return -1; 74 if (!(vp->vec[1] = (Fun_f)dlsym(np, vp->name))) 75 return -1; 76 } 77 return 1; 78 } 79 80 #endif 81