BSD 4.4 Lite Kernel Sources

1 files changed, 93 insertions, 0 deletions

diff --git a/sys/kern/kern_physio.c b/sys/kern/kern_physio.c
new file mode 100644
index 0000000..1eaae35
--- /dev/null
+++ b/sys/kern/kern_physio.c
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 1982, 1986, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	from: @(#)kern_physio.c	8.1 (Berkeley) 6/10/93
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/buf.h>
+#include <sys/conf.h>
+#include <sys/proc.h>
+
+physio(a1, a2, a3, a4, a5, a6)
+	int (*a1)(); 
+	struct buf *a2;
+	dev_t a3;
+	int a4;
+	u_int (*a5)();
+	struct uio *a6;
+{
+
+	/*
+	 * Body deleted.
+	 */
+	return (EIO);
+}
+
+u_int
+minphys(a1)
+	struct buf *a1;
+{
+
+	/*
+	 * Body deleted.
+	 */
+	return (0);
+}
+
+/*
+ * Do a read on a device for a user process.
+ */
+rawread(dev, uio)
+	dev_t dev;
+	struct uio *uio;
+{
+	return (physio(cdevsw[major(dev)].d_strategy, (struct buf *)NULL,
+	    dev, B_READ, minphys, uio));
+}
+
+/*
+ * Do a write on a device for a user process.
+ */
+rawwrite(dev, uio)
+	dev_t dev;
+	struct uio *uio;
+{
+	return (physio(cdevsw[major(dev)].d_strategy, (struct buf *)NULL,
+	    dev, B_WRITE, minphys, uio));
+}