1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #pragma weak _iob = __iob 34 35 #include "synonyms.h" 36 #include "mbstatet.h" 37 #include "mtlib.h" 38 #include "file64.h" 39 #include <stdio.h> 40 #include <thread.h> 41 #include <synch.h> 42 #include "stdiom.h" 43 #include <wchar.h> 44 45 /* 46 * Ptrs to start of preallocated buffers for stdin, stdout. 47 * Some slop is allowed at the end of the buffers in case an upset in 48 * the synchronization of _cnt and _ptr (caused by an interrupt or other 49 * signal) is not immediately detected. 50 */ 51 52 Uchar _sibuf[BUFSIZ + _SMBFSZ], _sobuf[BUFSIZ + _SMBFSZ]; 53 Uchar _smbuf[_NFILE + 1][_SMBFSZ] = {0}; /* shared library compatibility */ 54 55 56 #define DEFAULTMBSTATE \ 57 { NULL, NULL, {0, 0, 0, 0, 0, 0, 0, 0}, 0, {0, 0}} 58 59 #ifdef _LP64 60 61 #if _NFILE != 20 62 #error "_iob[] initialization impossible" 63 #endif 64 65 FILE _iob[_NFILE] = { 66 { NULL, NULL, NULL, 0, 0, _IOREAD, RECURSIVEMUTEX, DEFAULTMBSTATE }, 67 { NULL, NULL, NULL, 0, 1, _IOWRT, RECURSIVEMUTEX, DEFAULTMBSTATE }, 68 { NULL, NULL, NULL, 0, 2, _IOWRT|_IONBF, RECURSIVEMUTEX, 69 DEFAULTMBSTATE }, 70 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 71 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 72 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 73 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 74 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 75 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 76 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 77 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 78 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 79 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 80 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 81 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 82 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 83 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 84 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 85 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE }, 86 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, DEFAULTMBSTATE } 87 }; 88 89 #else 90 91 #if _NFILE != 20 && _NFILE != 60 92 #error "_iob[] initialization impossible" 93 #endif 94 95 /* 96 * FILEs not in _iob will never reference this table, so we only need _NFILE 97 * entries. 98 */ 99 struct xFILEdata _xftab[_NFILE] = { 100 XFILEINITIALIZER, XFILEINITIALIZER, 101 { 0, _smbuf[2] + _SBFSIZ, RECURSIVEMUTEX, DEFAULTMBSTATE }, /* stderr */ 102 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 103 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 104 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 105 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 106 #if _NFILE == 60 107 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 108 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 109 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 110 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 111 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 112 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 113 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 114 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 115 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 116 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 117 #endif 118 XFILEINITIALIZER }; 119 120 /* 121 * Ptrs to end of read/write buffers for first _NFILE devices. 122 * There is an extra bufend pointer which corresponds to the dummy 123 * file number _NFILE, which is used by sscanf and sprintf. 124 * Our implementation makes sure it never references _realbufend/_reallock/ 125 * etc for *sscanf() and *sprintf(); such use of a shared item would not be 126 * thread safe. 127 */ 128 Uchar *_bufendtab[_NFILE+1] = { NULL, NULL, _smbuf[2] + _SBFSIZ, }; 129 130 FILE _iob[_NFILE] = { 131 { 0, NULL, NULL, _IOREAD, 0 }, 132 { 0, NULL, NULL, _IOWRT, 1 }, 133 { 0, NULL, NULL, _IOWRT|_IONBF, 2 }, 134 }; 135 136 /* 137 * Ptr to end of io control blocks 138 */ 139 FILE *_lastbuf = &_iob[_NFILE]; 140 141 #endif /* _LP64 */ 142