/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 1988, 2011, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#include "lint.h"
#include <thread.h>
#include <mtlib.h>
#include <synch.h>
#include <stdarg.h>
#include <values.h>
#include <errno.h>
#include <sys/types.h>
#include "print.h"
#include "libc.h"
#include "mse.h"
/*
* 32-bit shadow function of vfprintf() is included here.
* 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 is only available in the 32-bit library.
*/
/*VARARGS2*/
int
#ifdef _C89_INTMAX32 /* _C89_INTMAX32 version in 32-bit libc only */
_vfprintf_c89(FILE *iop, const char *format, va_list ap)
#else
vfprintf(FILE *iop, const char *format, va_list ap)
#endif
{
ssize_t count;
rmutex_t *lk;
/* Use F*LOCKFILE() macros because vfprintf() 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 */
_READ2WRT(iop);
} else {
/* else error */
FUNLOCKFILE(lk);
errno = EBADF;
return (EOF);
}
}
#ifdef _C89_INTMAX32
count = _ndoprnt(format, ap, iop, _F_INTMAX32);
#else
count = _ndoprnt(format, ap, iop, 0);
#endif
/* check for error or EOF */
if (FERROR(iop) || count == EOF) {
FUNLOCKFILE(lk);
return (EOF);
}
FUNLOCKFILE(lk);
/* check for overflow */
if ((size_t)count > MAXINT) {
errno = EOVERFLOW;
return (EOF);
} else {
return ((int)count);
}
}