/*
* Copyright ( C ) 2014 The Android Open Source Project
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
* * Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* * Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in
* the documentation and / or other materials provided with the
* distribution .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT ,
* INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING ,
* BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS
* OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY ,
* OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE .
*/
#pragma once
/**
* @ file stdio_ext . h
* @ brief Extra standard I / O functionality . See also ` < stdio . h > ` .
*/
#include <sys/cdefs.h>
#include <stdio.h>
__BEGIN_DECLS
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ fbufsize ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fbufsize.3.html) returns the size of
* the stream ' s buffer .
*
* Available since API level 23 .
*/
size_t __fbufsize(FILE* _Nonnull __fp) __INTRODUCED_IN(23 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ freadable ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__freadable.3.html) returns non-zero if
* the stream allows reading , 0 otherwise .
*
* Available since API level 23 .
*/
int __freadable(FILE* _Nonnull __fp) __INTRODUCED_IN(23 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(28 )
/**
* [ _ _ freading ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__freading.3.html) returns non-zero if
* the stream ' s last operation was a read , 0 otherwise .
*
* Available since API level 28 .
*/
int __freading(FILE* _Nonnull __fp) __INTRODUCED_IN(28 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ fwritable ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fwritable.3.html) returns non-zero if
* the stream allows writing , 0 otherwise .
*
* Available since API level 23 .
*/
int __fwritable(FILE* _Nonnull __fp) __INTRODUCED_IN(23 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(28 )
/**
* [ _ _ fwriting ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fwriting.3.html) returns non-zero if
* the stream ' s last operation was a write , 0 otherwise .
*
* Available since API level 28 .
*/
int __fwriting(FILE* _Nonnull __fp) __INTRODUCED_IN(28 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ flbf ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__flbf.3.html) returns non-zero if
* the stream is line - buffered , 0 otherwise .
*
* Available since API level 23 .
*/
int __flbf(FILE* _Nonnull __fp) __INTRODUCED_IN(23 );
#endif
/**
* [ _ _ fpurge ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fpurge.3.html) discards the contents of
* the stream ' s buffer .
*/
void __fpurge(FILE* _Nonnull __fp) __RENAME(fpurge);
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ fpending ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fpending.3.html) returns the number of
* bytes in the output buffer . See _ _ freadahead ( ) for the input buffer .
*
* Available since API level 23 .
*/
size_t __fpending(FILE* _Nonnull __fp) __INTRODUCED_IN(23 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(34 )
/**
* _ _ freadahead ( 3 ) returns the number of bytes in the input buffer .
* See _ _ fpending ( ) for the output buffer .
*
* Available since API level 34 .
*/
size_t __freadahead(FILE* _Nonnull __fp) __INTRODUCED_IN(34 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ flushlbf ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/_flushlbf.3.html) flushes all
* line - buffered streams .
*
* Available since API level 23 .
*/
void _flushlbf(void ) __INTRODUCED_IN(23 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(28 )
/**
* ` _ _ fseterr ` sets the
* stream ' s error flag ( as tested by ferror ( ) and cleared by fclearerr ( ) ) .
*
* Available since API level 28 .
*/
void __fseterr(FILE* _Nonnull __fp) __INTRODUCED_IN(28 );
#endif
/** __fsetlocking() constant to query locking type. */
#define FSETLOCKING_QUERY 0
/** __fsetlocking() constant to set locking to be maintained by stdio. */
#define FSETLOCKING_INTERNAL 1
/** __fsetlocking() constant to set locking to be maintained by the caller. */
#define FSETLOCKING_BYCALLER 2
#if __BIONIC_AVAILABILITY_GUARD(23 )
/**
* [ _ _ fsetlocking ( 3 ) ] ( https : //man7.org/linux/man-pages/man3/__fsetlocking.3.html) sets the
* stream ' s locking mode to one of the ` FSETLOCKING_ ` types .
*
* Returns the current locking style , ` FSETLOCKING_INTERNAL ` or ` FSETLOCKING_BYCALLER ` .
*
* Available since API level 23 .
*/
int __fsetlocking(FILE* _Nonnull __fp, int __type) __INTRODUCED_IN(23 );
#endif
__END_DECLS
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