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 #include "lint.h" 33 #include <mtlib.h> 34 #include <stdarg.h> 35 #include <errno.h> 36 #include <thread.h> 37 #include <synch.h> 38 #include <values.h> 39 #include "print.h" 40 #include <sys/types.h> 41 #include "libc.h" 42 #include "mse.h" 43 44 /*VARARGS1*/ 45 int 46 printf(const char *format, ...) 47 { 48 ssize_t count; 49 rmutex_t *lk; 50 va_list ap; 51 52 va_start(ap, format); 53 54 /* Use F*LOCKFILE() macros because printf() is not async-safe. */ 55 FLOCKFILE(lk, stdout); 56 57 _SET_ORIENTATION_BYTE(stdout); 58 59 if (!(stdout->_flag & _IOWRT)) { 60 /* if no write flag */ 61 if (stdout->_flag & _IORW) { 62 /* if ok, cause read-write */ 63 stdout->_flag |= _IOWRT; 64 } else { 65 /* else error */ 66 FUNLOCKFILE(lk); 67 errno = EBADF; 68 return (EOF); 69 } 70 } 71 count = _ndoprnt(format, ap, stdout, 0); 72 va_end(ap); 73 74 /* check for errors or EOF */ 75 if (FERROR(stdout) || count == EOF) { 76 FUNLOCKFILE(lk); 77 return (EOF); 78 } 79 80 FUNLOCKFILE(lk); 81 82 /* check for overflow */ 83 if ((size_t)count > MAXINT) { 84 errno = EOVERFLOW; 85 return (EOF); 86 } else { 87 return ((int)count); 88 } 89 } 90 91 #ifndef _LP64 92 93 /* 94 * 32-bit shadow function of printf(). 95 * When using the c89 compiler to build 32-bit applications, the size 96 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits. 97 * The shadow function uses 32-bit size of intmax_t for %j conversion. 98 * The #pragma redefine_extname in <stdio.h> selects the proper routine 99 * at compile time for the user application. 100 * NOTE: this function only exists in the 32-bit library. 101 */ 102 103 int 104 _printf_c89(const char *format, ...) 105 { 106 ssize_t count; 107 va_list ap; 108 109 va_start(ap, format); 110 count = _vprintf_c89(format, ap); 111 va_end(ap); 112 return ((int)count); 113 } 114 115 #endif 116