| 1 | /** @file
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| 2 | * GNU GLIBC
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| 3 | */
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| 4 | /* Functions to access FILE structure internals.
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| 5 | Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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| 6 | This file is part of the GNU C Library.
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| 7 |
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| 8 | The GNU C Library is free software; you can redistribute it and/or
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| 9 | modify it under the terms of the GNU Lesser General Public
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| 10 | License as published by the Free Software Foundation; either
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| 11 | version 2.1 of the License, or (at your option) any later version.
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| 12 |
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| 13 | The GNU C Library is distributed in the hope that it will be useful,
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 16 | Lesser General Public License for more details.
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| 17 |
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| 18 | You should have received a copy of the GNU Lesser General Public
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| 19 | License along with the GNU C Library; if not, write to the Free
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| 20 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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| 21 | 02111-1307 USA. */
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| 22 |
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| 23 | /* This header contains the same definitions as the header of the same name
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| 24 | on Sun's Solaris OS. */
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| 25 |
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| 26 | #ifndef _STDIO_EXT_H
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| 27 | #define _STDIO_EXT_H 1
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| 28 |
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| 29 | #include <stdio.h>
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| 30 |
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| 31 | #if 0 /*bird: no support for these yet */
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| 32 | enum
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| 33 | {
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| 34 | /* Query current state of the locking status. */
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| 35 | FSETLOCKING_QUERY = 0,
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| 36 | #define FSETLOCKING_QUERY FSETLOCKING_QUERY
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| 37 | /* The library protects all uses of the stream functions, except for
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| 38 | uses of the *_unlocked functions, by calls equivalent to flockfile(). */
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| 39 | FSETLOCKING_INTERNAL,
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| 40 | #define FSETLOCKING_INTERNAL FSETLOCKING_INTERNAL
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| 41 | /* The user will take care of locking. */
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| 42 | FSETLOCKING_BYCALLER
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| 43 | #define FSETLOCKING_BYCALLER FSETLOCKING_BYCALLER
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| 44 | };
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| 45 | #endif /* bird */
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| 46 |
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| 47 | __BEGIN_DECLS
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| 48 |
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| 49 | /* Return the size of the buffer of FP in bytes currently in use by
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| 50 | the given stream. */
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| 51 | extern size_t __fbufsize (FILE *__fp);
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| 52 |
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| 53 |
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| 54 | /* Return non-zero value iff the stream FP is opened readonly, or if the
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| 55 | last operation on the stream was a read operation. */
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| 56 | extern int __freading (FILE *__fp);
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| 57 |
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| 58 | /* Return non-zero value iff the stream FP is opened write-only or
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| 59 | append-only, or if the last operation on the stream was a write
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| 60 | operation. */
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| 61 | extern int __fwriting (FILE *__fp);
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| 62 |
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| 63 |
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| 64 | /* Return non-zero value iff stream FP is not opened write-only or
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| 65 | append-only. */
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| 66 | extern int __freadable (FILE *__fp);
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| 67 |
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| 68 | /* Return non-zero value iff stream FP is not opened read-only. */
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| 69 | extern int __fwritable (FILE *__fp);
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| 70 |
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| 71 |
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| 72 | /* Return non-zero value iff the stream FP is line-buffered. */
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| 73 | extern int __flbf (FILE *__fp);
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| 74 |
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| 75 |
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| 76 | /* Discard all pending buffered I/O on the stream FP. */
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| 77 | extern void __fpurge (FILE *__fp);
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| 78 |
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| 79 | /* Return amount of output in bytes pending on a stream FP. */
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| 80 | extern size_t __fpending (FILE *__fp);
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| 81 |
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| 82 | /* Flush all line-buffered files. */
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| 83 | extern void _flushlbf (void);
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| 84 |
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| 85 |
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| 86 | /* Set locking status of stream FP to TYPE. */
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| 87 | extern int __fsetlocking (FILE *__fp, int __type);
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| 88 |
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| 89 | __END_DECLS
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| 90 |
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| 91 | #endif /* stdio_ext.h */
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