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87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
8 years ago
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/* Functions to access FILE structure internals.
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Copyright (C) 2000-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* This header contains the same definitions as the header of the same name
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on Sun's Solaris OS. */
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#ifndef _STDIO_EXT_H
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#define _STDIO_EXT_H 1
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#include <stdio.h>
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enum
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{
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/* Query current state of the locking status. */
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FSETLOCKING_QUERY = 0,
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#define FSETLOCKING_QUERY FSETLOCKING_QUERY
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/* The library protects all uses of the stream functions, except for
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uses of the *_unlocked functions, by calls equivalent to flockfile(). */
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FSETLOCKING_INTERNAL,
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#define FSETLOCKING_INTERNAL FSETLOCKING_INTERNAL
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/* The user will take care of locking. */
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FSETLOCKING_BYCALLER
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#define FSETLOCKING_BYCALLER FSETLOCKING_BYCALLER
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};
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__BEGIN_DECLS
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/* Return the size of the buffer of FP in bytes currently in use by
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the given stream. */
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extern size_t __fbufsize (FILE *__fp) __THROW;
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/* Return non-zero value iff the stream FP is opened readonly, or if the
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last operation on the stream was a read operation. */
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extern int __freading (FILE *__fp) __THROW;
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/* Return non-zero value iff the stream FP is opened write-only or
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append-only, or if the last operation on the stream was a write
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operation. */
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extern int __fwriting (FILE *__fp) __THROW;
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/* Return non-zero value iff stream FP is not opened write-only or
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append-only. */
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extern int __freadable (FILE *__fp) __THROW;
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/* Return non-zero value iff stream FP is not opened read-only. */
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extern int __fwritable (FILE *__fp) __THROW;
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/* Return non-zero value iff the stream FP is line-buffered. */
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extern int __flbf (FILE *__fp) __THROW;
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/* Discard all pending buffered I/O on the stream FP. */
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extern void __fpurge (FILE *__fp) __THROW;
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/* Return amount of output in bytes pending on a stream FP. */
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extern size_t __fpending (FILE *__fp) __THROW;
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/* Flush all line-buffered files. */
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extern void _flushlbf (void);
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/* Set locking status of stream FP to TYPE. */
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extern int __fsetlocking (FILE *__fp, int __type) __THROW;
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__END_DECLS
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#endif /* stdio_ext.h */
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