1 files changed, 66 insertions, 0 deletions
diff --git a/StdLib/LibC/Stdio/fileext.h b/StdLib/LibC/Stdio/fileext.h
new file mode 100644
index 0000000000..0ad78468b9
--- /dev/null
+++ b/StdLib/LibC/Stdio/fileext.h
@@ -0,0 +1,66 @@
+/* $NetBSD: fileext.h,v 1.5 2003/07/18 21:46:41 nathanw Exp $ */
+
+/*-
+ * Copyright (c)2001 Citrus 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $Citrus$
+ */
+
+/*
+ * file extension
+ */
+struct __sfileext {
+	struct	__sbuf _ub; /* ungetc buffer */
+	struct wchar_io_data _wcio;	/* wide char i/o status */
+#ifdef _REENTRANT
+	mutex_t	_lock;	/* Lock for FLOCKFILE/FUNLOCKFILE */
+	cond_t _lockcond; /* Condition variable for signalling lock releases */
+	thr_t _lockowner; /* The thread currently holding the lock */
+	int _lockcount; /* Count of recursive locks */
+	int _lockinternal; /* Flag of whether the lock is held inside stdio */
+	int _lockcancelstate; /* Stashed cancellation state on internal lock */
+#endif	
+};
+
+#define _EXT(fp) ((struct __sfileext *)(void *)((fp)->_ext._base))
+#define _UB(fp) _EXT(fp)->_ub
+#ifdef _REENTRANT
+#define _LOCK(fp) (_EXT(fp)->_lock)
+#define _LOCKCOND(fp) (_EXT(fp)->_lockcond)
+#define _LOCKOWNER(fp) (_EXT(fp)->_lockowner)
+#define _LOCKCOUNT(fp) (_EXT(fp)->_lockcount)
+#define _LOCKINTERNAL(fp) (_EXT(fp)->_lockinternal)
+#define _LOCKCANCELSTATE(fp) (_EXT(fp)->_lockcancelstate)
+#define _FILEEXT_SETUP(f, fext) do { \
+	/* LINTED */(f)->_ext._base = (unsigned char *)(fext); \
+	mutex_init(&_LOCK(f), NULL); \
+	cond_init(&_LOCKCOND(f), 0, NULL); \
+	_LOCKOWNER(f) = NULL; \
+	_LOCKCOUNT(f) = 0; \
+	_LOCKINTERNAL(f) = 0; \
+	} while (/* LINTED */ 0)
+#else
+#define _FILEEXT_SETUP(f, fext) /* LINTED */(f)->_ext._base = (unsigned char *)(fext)
+#endif