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 /* This function should not be defined weak, but there might be */ 34 /* some program or libraries that may be interposing on this */ 35 #pragma weak fprintf = _fprintf 36 37 #include "synonyms.h" 38 #include <mtlib.h> 39 #include <thread.h> 40 #include <synch.h> 41 #include <stdarg.h> 42 #include <values.h> 43 #include <errno.h> 44 #include "print.h" 45 #include <sys/types.h> 46 #include "libc.h" 47 #include "mse.h" 48 49 /*VARARGS2*/ 50 int 51 fprintf(FILE *iop, const char *format, ...) 52 { 53 ssize_t count; 54 rmutex_t *lk; 55 va_list ap; 56 57 va_start(ap, format); 58 59 /* Use F*LOCKFILE() macros because fprintf() is not async-safe. */ 60 FLOCKFILE(lk, iop); 61 62 _SET_ORIENTATION_BYTE(iop); 63 64 if (!(iop->_flag & _IOWRT)) { 65 /* if no write flag */ 66 if (iop->_flag & _IORW) { 67 /* if ok, cause read-write */ 68 iop->_flag |= _IOWRT; 69 } else { 70 /* else error */ 71 FUNLOCKFILE(lk); 72 errno = EBADF; 73 return (EOF); 74 } 75 } 76 count = _ndoprnt(format, ap, iop, 0); 77 78 /* return EOF on error or EOF */ 79 if (FERROR(iop) || count == EOF) { 80 FUNLOCKFILE(lk); 81 return (EOF); 82 } 83 84 FUNLOCKFILE(lk); 85 86 /* error on overflow */ 87 if ((size_t)count > MAXINT) { 88 errno = EOVERFLOW; 89 return (EOF); 90 } 91 return ((int)count); 92 } 93 94 #ifndef _LP64 95 96 /* 97 * 32-bit shadow function of fprintf(). 98 * When using the c89 compiler to build 32-bit applications, the size 99 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits. 100 * The shadow function uses 32-bit size of intmax_t for %j conversion. 101 * The #pragma redefine_extname in <stdio.h> selects the proper routine 102 * at compile time for the user application. 103 * NOTE: this function only exists in the 32-bit library. 104 */ 105 106 int 107 _fprintf_c89(FILE *iop, const char *format, ...) 108 { 109 ssize_t count; 110 va_list ap; 111 112 va_start(ap, format); 113 count = _vfprintf_c89(iop, format, ap); 114 va_end(ap); 115 return ((int)count); 116 } 117 118 #endif /* _LP64 */ 119