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