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89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Extensions to the stdio package
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*/
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#ifndef _STDIO_EXT_H
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#define _STDIO_EXT_H
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Even though the contents of the stdio FILE structure have always been
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* private to the stdio implementation, over the years some programs have
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* needed to get information about a stdio stream that was not accessible
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* through a supported interface. These programs have resorted to accessing
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* fields of the FILE structure directly, rendering them possibly non-portable
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* to new implementations of stdio, or more likely, preventing enhancements
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* to stdio because those programs will break.
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*
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* In the 64-bit world, the FILE structure is opaque. The routines here
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* are provided as a way to get the information that used to be retrieved
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* directly from the FILE structure. They are based on the needs of
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* existing programs (such as 'mh' and 'emacs'), so they may be extended
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* as other programs are ported. Though they may still be non-portable to
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* other operating systems, they will work from each Solaris release to
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* the next. More portable interfaces are being developed.
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*/
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#define FSETLOCKING_QUERY 0
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#define FSETLOCKING_INTERNAL 1
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#define FSETLOCKING_BYCALLER 2
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extern size_t __fbufsize(FILE *stream);
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extern int __freading(FILE *stream);
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extern int __fwriting(FILE *stream);
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extern int __freadable(FILE *stream);
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extern int __fwritable(FILE *stream);
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extern int __flbf(FILE *stream);
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extern void __fpurge(FILE *stream);
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extern size_t __fpending(FILE *stream);
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extern void _flushlbf(void);
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extern int __fsetlocking(FILE *stream, int type);
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/*
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* Extended FILE enabling function.
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*/
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#if defined(_LP64) && !defined(__lint)
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#define enable_extended_FILE_stdio(fd, act) (0)
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#else
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extern int enable_extended_FILE_stdio(int, int);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _STDIO_EXT_H */
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