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 #include "synonyms.h" 34 #include <mtlib.h> 35 #include <stdarg.h> 36 #include <errno.h> 37 #include <thread.h> 38 #include <synch.h> 39 #include <values.h> 40 #include "print.h" 41 #include <sys/types.h> 42 #include "libc.h" 43 #include "mse.h" 44 45 /*VARARGS1*/ 46 int 47 printf(const char *format, ...) 48 { 49 ssize_t count; 50 rmutex_t *lk; 51 va_list ap; 52 53 va_start(ap, format); 54 55 /* Use F*LOCKFILE() macros because printf() is not async-safe. */ 56 FLOCKFILE(lk, stdout); 57 58 _SET_ORIENTATION_BYTE(stdout); 59 60 if (!(stdout->_flag & _IOWRT)) { 61 /* if no write flag */ 62 if (stdout->_flag & _IORW) { 63 /* if ok, cause read-write */ 64 stdout->_flag |= _IOWRT; 65 } else { 66 /* else error */ 67 FUNLOCKFILE(lk); 68 errno = EBADF; 69 return (EOF); 70 } 71 } 72 count = _ndoprnt(format, ap, stdout, 0); 73 va_end(ap); 74 75 /* check for errors or EOF */ 76 if (FERROR(stdout) || count == EOF) { 77 FUNLOCKFILE(lk); 78 return (EOF); 79 } 80 81 FUNLOCKFILE(lk); 82 83 /* check for overflow */ 84 if ((size_t)count > MAXINT) { 85 errno = EOVERFLOW; 86 return (EOF); 87 } else { 88 return ((int)count); 89 } 90 } 91 92 #ifndef _LP64 93 94 /* 95 * 32-bit shadow function of printf(). 96 * When using the c89 compiler to build 32-bit applications, the size 97 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits. 98 * The shadow function uses 32-bit size of intmax_t for %j conversion. 99 * The #pragma redefine_extname in <stdio.h> selects the proper routine 100 * at compile time for the user application. 101 * NOTE: this function only exists in the 32-bit library. 102 */ 103 104 int 105 _printf_c89(const char *format, ...) 106 { 107 ssize_t count; 108 va_list ap; 109 110 va_start(ap, format); 111 count = _vprintf_c89(format, ap); 112 va_end(ap); 113 return ((int)count); 114 } 115 116 #endif 117