Update.

	* libio/Makefile (headers): Add stdio_ext.h.
	(routines): Add __fbufsize, __freading, __fwriting, __freadable,
	__fwritable, __flbf, __fpurge, __fpending, and __fsetlocking.
	* libio/Versions [libc] (GLIBC_2.2): Add __fbufsize, __freading,
	__fwriting, __freadable, __fwritable, __flbf, __fpurge, __fpending,
	__fsetlocking, and _flushlbf.
	* libio/__fbufsize.c: New file.
	* libio/__flbf.c: New file.
	* libio/__fpending.c: New file.
	* libio/__fpurge.c: New file.
	* libio/__freadable.c: New file.
	* libio/__freading.c: New file.
	* libio/__fsetlocking.c: New file.
	* libio/__fwritable.c: New file.
	* libio/__fwriting.c: New file.
	* libio/stdio_ext.h: New file.
	* libio/genops.c (_IO_flush_all_linebuffered): Add alias _flushlbf.
	* libio/libio.h (_IO_USER_LOCK): Define.

1 files changed, 86 insertions, 0 deletions

diff --git a/libio/stdio_ext.h b/libio/stdio_ext.h
new file mode 100644
index 0000000000..69d6a0ff2b
--- /dev/null
+++ b/libio/stdio_ext.h
@@ -0,0 +1,86 @@
+/* Functions to access FILE structure internals.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This header contains the same definitions as the header of the same name
+   on Sun's Solaris OS.  */
+
+#ifndef _STDIO_EXT_H
+#define _STDIO_EXT_H	1
+
+#include <stdio.h>
+
+enum
+{
+  /* Query current state of the locking status.  */
+  FSETLOCKING_QUERY = 0,
+#define FSETLOCKING_QUERY	FSETLOCKING_QUERY
+  /* The library protects all uses of the stream functions, except for
+     uses of the *_unlocked functions, by calls equivalent to flockfile().  */
+  FSETLOCKING_INTERNAL,
+#define FSETLOCKING_INTERNAL	FSETLOCKING_INTERNAL
+  /* The user will take care of locking.  */
+  FSETLOCKING_BYCALLER
+#define FSETLOCKING_BYCALLER	FSETLOCKING_BYCALLER
+};
+
+
+__BEGIN_DECLS
+
+/* Return the size of the buffer of FP in bytes currently in use by
+   the given stream.  */
+extern size_t __fbufsize (FILE *__fp);
+
+
+/* Return non-zero value iff the stream FP is opened readonly, or if the
+   last operation on the stream was a read operation.  */
+extern int __freading (FILE *__fp);
+
+/* Return non-zero value iff the stream FP is opened write-only or
+   append-only, or if the last operation on the stream was a write
+   operation.  */
+extern int __fwriting (FILE *__fp);
+
+
+/* Return non-zero value iff stream FP is not opened write-only or
+   append-only.  */
+extern int __freadable (FILE *__fp);
+
+/* Return non-zero value iff stream FP is not opened read-only.  */
+extern int __fwritable (FILE *__fp);
+
+
+/* Return non-zero value iff the stream FP is line-buffered.  */
+extern int __flbf (FILE *__fp);
+
+
+/* Discard all pending buffered I/O on the stream FP.  */
+extern void __fpurge (FILE *__fp);
+
+/* Return amount of output in bytes pending on a stream FP.  */
+extern size_t __fpending (FILE *__fp);
+
+/* Flush all line-buffered files.  */
+extern void _flushlbf (void);
+
+
+/* Set locking statis of stream FP to TYPE.  */
+extern int __fsetlocking (FILE *__fp, int __type);
+
+__END_DECLS
+
+#endif	/* stdio_ext.h */