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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/* This function should not be defined weak, but there might be */
/* some program or libraries that may be interposing on this */
#pragma weak fprintf = _fprintf
#include "synonyms.h"
#include <mtlib.h>
#include <thread.h>
#include <synch.h>
#include <stdarg.h>
#include <values.h>
#include <errno.h>
#include "print.h"
#include <sys/types.h>
#include "libc.h"
#include "mse.h"
/*VARARGS2*/
int
fprintf(FILE *iop, const char *format, ...)
{
ssize_t count;
rmutex_t *lk;
va_list ap;
va_start(ap, format);
/* Use F*LOCKFILE() macros because fprintf() is not async-safe. */
FLOCKFILE(lk, iop);
_SET_ORIENTATION_BYTE(iop);
if (!(iop->_flag & _IOWRT)) {
/* if no write flag */
if (iop->_flag & _IORW) {
/* if ok, cause read-write */
iop->_flag |= _IOWRT;
} else {
/* else error */
FUNLOCKFILE(lk);
errno = EBADF;
return (EOF);
}
}
count = _ndoprnt(format, ap, iop, 0);
/* return EOF on error or EOF */
if (FERROR(iop) || count == EOF) {
FUNLOCKFILE(lk);
return (EOF);
}
FUNLOCKFILE(lk);
/* error on overflow */
if ((size_t)count > MAXINT) {
errno = EOVERFLOW;
return (EOF);
}
return ((int)count);
}
#ifndef _LP64
/*
* 32-bit shadow function of fprintf().
* When using the c89 compiler to build 32-bit applications, the size
* of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
* The shadow function uses 32-bit size of intmax_t for %j conversion.
* The #pragma redefine_extname in <stdio.h> selects the proper routine
* at compile time for the user application.
* NOTE: this function only exists in the 32-bit library.
*/
int
_fprintf_c89(FILE *iop, const char *format, ...)
{
ssize_t count;
va_list ap;
va_start(ap, format);
count = _vfprintf_c89(iop, format, ap);
va_end(ap);
return ((int)count);
}
#endif /* _LP64 */
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