BSD 4.4 Lite Kernel Sources

1 files changed, 112 insertions, 0 deletions

diff --git a/sys/sys/disk.h b/sys/sys/disk.h
new file mode 100644
index 000000000000..352ecf002740
--- /dev/null
+++ b/sys/sys/disk.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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, Lawrence Berkeley Laboratory.
+ *
+ * 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.
+ *
+ *	@(#)disk.h	8.1 (Berkeley) 6/2/93
+ *
+ * from: $Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp $ (LBL)
+ */
+
+/*
+ * Disk device structures.
+ *
+ * Note that this is only a preliminary outline.  The final disk structures
+ * may be somewhat different.
+ */
+struct buf;
+
+struct dkdevice {
+	struct	device dk_dev;		/* base device */
+	struct	dkdevice *dk_next;	/* list of disks; not yet used */
+	int	dk_bps;			/* xfer rate: bytes per second */
+	int	dk_bopenmask;		/* block devices open */
+	int	dk_copenmask;		/* character devices open */
+	int	dk_openmask;		/* composite (bopen|copen) */
+	int	dk_state;		/* label state   ### */
+	int	dk_blkshift;		/* shift to convert DEV_BSIZE to blks */
+	int	dk_byteshift;		/* shift to convert bytes to blks */
+	struct	dkdriver *dk_driver;	/* pointer to driver */
+	daddr_t	dk_labelsector;		/* sector containing label */
+	struct	disklabel dk_label;	/* label */
+};
+
+struct dkdriver {
+	void	(*d_strategy) __P((struct buf *));
+#ifdef notyet
+	int	(*d_open) __P((dev_t dev, int ifmt, int, struct proc *));
+	int	(*d_close) __P((dev_t dev, int, int ifmt, struct proc *));
+	int	(*d_ioctl) __P((dev_t dev, int cmd, caddr_t data, int fflag,
+				struct proc *));
+	int	(*d_dump) __P((dev_t));
+	void	(*d_start) __P((struct buf *, daddr_t));
+	int	(*d_mklabel) __P((struct dkdevice *));
+#endif
+};
+
+/* states */
+#define	DK_CLOSED	0		/* drive is closed */
+#define	DK_WANTOPEN	1		/* drive being opened */
+#define	DK_WANTOPENRAW	2		/* drive being opened */
+#define	DK_RDLABEL	3		/* label being read */
+#define	DK_OPEN		4		/* label read, drive open */
+#define	DK_OPENRAW	5		/* open without label */
+
+#ifdef DISKSORT_STATS
+/*
+ * Stats from disksort().
+ */
+struct disksort_stats {
+	long	ds_newhead;		/* # new queue heads created */
+	long	ds_newtail;		/* # new queue tails created */
+	long	ds_midfirst;		/* # insertions into sort list */
+	long	ds_endfirst;		/* # insertions at end of sort list */
+	long	ds_newsecond;		/* # inversions (2nd lists) created */
+	long	ds_midsecond;		/* # insertions into 2nd list */
+	long	ds_endsecond;		/* # insertions at end of 2nd list */
+};
+#endif
+
+#ifdef KERNEL
+void	disksort __P((struct buf *, struct buf *));
+char	*readdisklabel __P((struct dkdevice *, int));
+int	setdisklabel __P((struct dkdevice *, struct disklabel *));
+int	writedisklabel __P((struct dkdevice *, int));
+int	diskerr __P((struct dkdevice *, struct buf *, char *, int, int));
+#endif