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/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef _C89_INTMAX32
#pragma weak _vscanf = vscanf
#pragma weak _vfscanf = vfscanf
#pragma weak _vsscanf = vsscanf
#endif
#include "lint.h"
#include "file64.h"
#include "mtlib.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <thread.h>
#include <synch.h>
#include "libc.h"
#include "stdiom.h"
#include "mse.h"
#include <stdio_ext.h>
/*
* 32-bit shadow functions _vscanf_c89(), _vfscanf_c89(), _vsscanf_c89()
* are 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: the shadow function only exists in the 32-bit library.
*/
int
#ifdef _C89_INTMAX32 /* _C89_INTMAX32 version in 32-bit libc only */
_vscanf_c89(const char *fmt, va_list ap)
#else
vscanf(const char *fmt, va_list ap)
#endif
{
rmutex_t *lk;
int ret;
FLOCKFILE(lk, stdin);
_SET_ORIENTATION_BYTE(stdin);
#ifdef _C89_INTMAX32
ret = __doscan_u(stdin, fmt, ap, _F_INTMAX32);
#else
ret = __doscan_u(stdin, fmt, ap, 0);
#endif
FUNLOCKFILE(lk);
return (ret);
}
int
#ifdef _C89_INTMAX32 /* _C89_INTMAX32 version in 32-bit libc only */
_vfscanf_c89(FILE *iop, const char *fmt, va_list ap)
#else
vfscanf(FILE *iop, const char *fmt, va_list ap)
#endif
{
rmutex_t *lk;
int ret;
FLOCKFILE(lk, iop);
_SET_ORIENTATION_BYTE(iop);
#ifdef _C89_INTMAX32
ret = __doscan_u(iop, fmt, ap, _F_INTMAX32);
#else
ret = __doscan_u(iop, fmt, ap, 0);
#endif
FUNLOCKFILE(lk);
return (ret);
}
int
#ifdef _C89_INTMAX32 /* _C89_INTMAX32 version in 32-bit libc only */
_vsscanf_c89(const char *str, const char *fmt, va_list ap)
#else
vsscanf(const char *str, const char *fmt, va_list ap)
#endif
{
FILE strbuf;
/*
* The dummy FILE * created for sscanf has the _IOWRT
* flag set to distinguish it from scanf and fscanf
* invocations.
*/
strbuf._flag = _IOREAD | _IOWRT;
strbuf._ptr = strbuf._base = (unsigned char *)str;
strbuf._cnt = strlen(str);
SET_FILE(&strbuf, _NFILE);
/*
* Mark the stream so that routines called by __doscan_u()
* do not do any locking. In particular this avoids a NULL
* lock pointer being used by getc() causing a core dump.
* See bugid - 1210179 program SEGV's in sscanf if linked with
* the libthread.
* This also makes sscanf() quicker since it does not need
* to do any locking.
*/
if (__fsetlocking(&strbuf, FSETLOCKING_BYCALLER) == -1) {
return (-1); /* this should never happen */
}
/* as this stream is local to this function, no locking is be done */
#ifdef _C89_INTMAX32
return (__doscan_u(&strbuf, fmt, ap, _F_INTMAX32));
#else
return (__doscan_u(&strbuf, fmt, ap, 0));
#endif
}
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