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 #include "lint.h" 31 #include <mtlib.h> 32 #include <stdarg.h> 33 #include <errno.h> 34 #include <thread.h> 35 #include <values.h> 36 #include <synch.h> 37 #include <sys/types.h> 38 #include "print.h" 39 #include "libc.h" 40 #include "mse.h" 41 42 /* 43 * 32-bit shadow function of vprintf() is included here. 44 * When using the c89 compiler to build 32-bit applications, the size 45 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits. 46 * The shadow function uses 32-bit size of intmax_t for %j conversion. 47 * The #pragma redefine_extname in <stdio.h> selects the proper routine 48 * at compile time for the user application. 49 * NOTE: the shadow function is only available in the 32-bit library. 50 */ 51 52 /*VARARGS1*/ 53 54 int 55 #ifdef _C89_INTMAX32 56 _vprintf_c89(const char *format, va_list ap) 57 #else 58 vprintf(const char *format, va_list ap) 59 #endif 60 { 61 ssize_t count; 62 rmutex_t *lk; 63 64 /* Use F*LOCKFILE() macros because vprintf() is not async-safe. */ 65 FLOCKFILE(lk, stdout); 66 67 _SET_ORIENTATION_BYTE(stdout); 68 69 if (!(stdout->_flag & _IOWRT)) { 70 /* if no write flag */ 71 if (stdout->_flag & _IORW) { 72 /* if ok, cause read-write */ 73 stdout->_flag |= _IOWRT; 74 } else { 75 /* else error */ 76 FUNLOCKFILE(lk); 77 errno = EBADF; 78 return (EOF); 79 } 80 } 81 #ifdef _C89_INTMAX32 82 count = _ndoprnt(format, ap, stdout, _F_INTMAX32); 83 #else 84 count = _ndoprnt(format, ap, stdout, 0); 85 #endif 86 /* check for error or EOF */ 87 if (FERROR(stdout) || count == EOF) { 88 FUNLOCKFILE(lk); 89 return (EOF); 90 } 91 92 FUNLOCKFILE(lk); 93 94 /* check for overflow */ 95 if ((size_t)count > MAXINT) { 96 errno = EOVERFLOW; 97 return (EOF); 98 } else { 99 return ((int)count); 100 } 101 } 102