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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #pragma weak __iob = _iob 33 34 #include "lint.h" 35 #include "mbstatet.h" 36 #include "mtlib.h" 37 #include "file64.h" 38 #include <stdio.h> 39 #include <thread.h> 40 #include <synch.h> 41 #include "stdiom.h" 42 #include <wchar.h> 43 44 /* 45 * Ptrs to start of preallocated buffers for stdin, stdout. 46 * Some slop is allowed at the end of the buffers in case an upset in 47 * the synchronization of _cnt and _ptr (caused by an interrupt or other 48 * signal) is not immediately detected. 49 */ 50 51 Uchar _sibuf[BUFSIZ + _SMBFSZ], _sobuf[BUFSIZ + _SMBFSZ]; 52 Uchar _smbuf[_NFILE + 1][_SMBFSZ] = {0}; /* shared library compatibility */ 53 54 55 #define DEFAULTMBSTATE \ 56 { NULL, NULL, {0, 0, 0, 0, 0, 0, 0, 0}, 0, {0, 0}} 57 58 #ifdef _LP64 59 60 #if _NFILE != 20 61 #error "_iob[] initialization impossible" 62 #endif 63 64 FILE _iob[_NFILE] = { 65 { NULL, NULL, NULL, 0, 0, _IOREAD, RECURSIVEMUTEX, DEFAULTMBSTATE }, 66 { NULL, NULL, NULL, 0, 1, _IOWRT, RECURSIVEMUTEX, DEFAULTMBSTATE }, 67 { NULL, NULL, NULL, 0, 2, _IOWRT|_IONBF, RECURSIVEMUTEX, 68 DEFAULTMBSTATE }, 69 { NULL, NULL, NULL, 0, 0, 0, RECURSIVEMUTEX, 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 }; 87 88 #else 89 90 #if _NFILE != 20 && _NFILE != 60 91 #error "_iob[] initialization impossible" 92 #endif 93 94 /* 95 * FILEs not in _iob will never reference this table, so we only need _NFILE 96 * entries. 97 */ 98 struct xFILEdata _xftab[_NFILE] = { 99 XFILEINITIALIZER, XFILEINITIALIZER, 100 { 0, _smbuf[2] + _SBFSIZ, RECURSIVEMUTEX, DEFAULTMBSTATE }, /* stderr */ 101 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 102 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 103 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 104 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 105 #if _NFILE == 60 106 XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, XFILEINITIALIZER, 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 #endif 117 XFILEINITIALIZER }; 118 119 /* 120 * Ptrs to end of read/write buffers for first _NFILE devices. 121 * There is an extra bufend pointer which corresponds to the dummy 122 * file number _NFILE, which is used by sscanf and sprintf. 123 * Our implementation makes sure it never references _realbufend/_reallock/ 124 * etc for *sscanf() and *sprintf(); such use of a shared item would not be 125 * thread safe. 126 */ 127 Uchar *_bufendtab[_NFILE+1] = { NULL, NULL, _smbuf[2] + _SBFSIZ, }; 128 129 FILE _iob[_NFILE] = { 130 { 0, NULL, NULL, _IOREAD, 0 }, 131 { 0, NULL, NULL, _IOWRT, 1 }, 132 { 0, NULL, NULL, _IOWRT|_IONBF, 2 }, 133 }; 134 135 /* 136 * Ptr to end of io control blocks 137 */ 138 FILE *_lastbuf = &_iob[_NFILE]; 139 140 #endif /* _LP64 */ 141