aboutsummaryrefslogtreecommitdiff
path: root/libio/stdio_ext.h
diff options
context:
space:
mode:
Diffstat (limited to 'libio/stdio_ext.h')
-rw-r--r--libio/stdio_ext.h86
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 */