OpenSolaris Launch

1 files changed, 92 insertions, 0 deletions

diff --git a/usr/src/lib/libbc/libc/stdio/sys5/filbuf.c b/usr/src/lib/libbc/libc/stdio/sys5/filbuf.c
new file mode 100644
index 0000000000..aa247dab34
--- /dev/null
+++ b/usr/src/lib/libbc/libc/stdio/sys5/filbuf.c
@@ -0,0 +1,92 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 1998 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*      Copyright (c) 1984 AT&T */
+/*        All Rights Reserved   */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 2.1 */
+
+/*LINTLIBRARY*/
+#include <stdio.h>
+
+extern _findbuf();
+extern int read();
+extern int fflush();
+
+int
+__filbuf(iop)
+register FILE *iop;
+{
+	return (_filbuf(iop));
+}
+
+int
+_filbuf(iop)
+register FILE *iop;
+{
+	static void lbfflush();
+
+	if ( !(iop->_flag & _IOREAD) )
+		if (iop->_flag & _IORW)
+			iop->_flag |= _IOREAD;
+		else
+			return(EOF);
+
+	if (iop->_flag&_IOSTRG)
+		return(EOF);
+
+	if (iop->_base == NULL)  /* get buffer if we don't have one */
+		_findbuf(iop);
+
+	/* if this device is a terminal (line-buffered) or unbuffered, then */
+	/* flush buffers of all line-buffered devices currently writing */
+
+	if (iop->_flag & (_IOLBF | _IONBF))
+		_fwalk(lbfflush);
+
+	iop->_ptr = iop->_base;
+	iop->_cnt = read(fileno(iop), (char *)iop->_base,
+	    (unsigned)((iop->_flag & _IONBF) ? 1 : iop->_bufsiz ));
+	if (--iop->_cnt >= 0)		/* success */
+		return (*iop->_ptr++);
+	if (iop->_cnt != -1)		/* error */
+		iop->_flag |= _IOERR;
+	else {				/* end-of-file */
+		iop->_flag |= _IOEOF;
+		if (iop->_flag & _IORW)
+			iop->_flag &= ~_IOREAD;
+	}
+	iop->_cnt = 0;
+	return (EOF);
+}
+
+static void
+lbfflush(iop)
+FILE *iop;
+{
+	if (iop->_flag & _IOLBF)
+		(void) fflush(iop);
+}