diff options
Diffstat (limited to 'usr/src/head/stdio_ext.h')
| -rw-r--r-- | usr/src/head/stdio_ext.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/usr/src/head/stdio_ext.h b/usr/src/head/stdio_ext.h new file mode 100644 index 0000000000..f3e52daeb1 --- /dev/null +++ b/usr/src/head/stdio_ext.h @@ -0,0 +1,79 @@ +/* + * 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 (c) 1998, by Sun Microsystems, Inc. + * All rights reserved. + */ + +/* + * Extensions to the stdio package + */ + +#ifndef _STDIO_EXT_H +#define _STDIO_EXT_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <stdio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Even though the contents of the stdio FILE structure have always been + * private to the stdio implementation, over the years some programs have + * needed to get information about a stdio stream that was not accessible + * through a supported interface. These programs have resorted to accessing + * fields of the FILE structure directly, rendering them possibly non-portable + * to new implementations of stdio, or more likely, preventing enhancements + * to stdio because those programs will break. + * + * In the 64-bit world, the FILE structure is opaque. The routines here + * are provided as a way to get the information that used to be retrieved + * directly from the FILE structure. They are based on the needs of + * existing programs (such as 'mh' and 'emacs'), so they may be extended + * as other programs are ported. Though they may still be non-portable to + * other operating systems, they will work from each Solaris release to + * the next. More portable interfaces are being developed. + */ + +#define FSETLOCKING_QUERY 0 +#define FSETLOCKING_INTERNAL 1 +#define FSETLOCKING_BYCALLER 2 + +extern size_t __fbufsize(FILE *stream); +extern int __freading(FILE *stream); +extern int __fwriting(FILE *stream); +extern int __freadable(FILE *stream); +extern int __fwritable(FILE *stream); +extern int __flbf(FILE *stream); +extern void __fpurge(FILE *stream); +extern size_t __fpending(FILE *stream); +extern void _flushlbf(void); +extern int __fsetlocking(FILE *stream, int type); + +#ifdef __cplusplus +} +#endif + +#endif /* _STDIO_EXT_H */ |