Add support for VTOC8 labels (aka sun disk labels). When a label does

not have VTOC information about the partitions, it will be created.
This is because the VTOC information is used for the partition type
and FreeBSD's sunlabel(8) does not create nor use VTOC information.
For this purpose, new tags have been added to support FreeBSD's
partition types.

1 files changed, 106 insertions, 0 deletions

diff --git a/sys/sys/vtoc.h b/sys/sys/vtoc.h
new file mode 100644
index 000000000000..83b85478ec02
--- /dev/null
+++ b/sys/sys/vtoc.h
@@ -0,0 +1,106 @@
+/*-
+ * Copyright (c) 2008 Marcel Moolenaar
+ * 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 ``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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_VTOC_H_
+#define	_SYS_VTOC_H_
+
+#define	VTOC_TAG_UNASSIGNED	0x00
+#define	VTOC_TAG_BOOT		0x01
+#define	VTOC_TAG_ROOT		0x02
+#define	VTOC_TAG_SWAP		0x03
+#define	VTOC_TAG_USR		0x04
+#define	VTOC_TAG_BACKUP		0x05	/* "c" partition */
+#define	VTOC_TAG_STAND		0x06
+#define	VTOC_TAG_VAR		0x07
+#define	VTOC_TAG_HOME		0x08
+#define	VTOC_TAG_ALTSCTR	0x09	/* alternate sector partition */
+#define	VTOC_TAG_CACHE		0x0a	/* Solaris cachefs partition */
+#define	VTOC_TAG_VXVM_PUB	0x0e	/* VxVM public region */
+#define	VTOC_TAG_VXVM_PRIV	0x0f	/* VxVM private region */
+
+/* NetBSD/mips defines this */
+#define	VTOC_TAG_NETBSD_FFS	0xff
+
+/* FreeBSD tags: the high byte equals ELFOSABI_FREEBSD */
+#define	VTOC_TAG_FREEBSD_SWAP	0x0901
+#define	VTOC_TAG_FREEBSD_UFS	0x0902
+#define	VTOC_TAG_FREEBSD_VINUM	0x0903
+#define	VTOC_TAG_FREEBSD_ZFS	0x0904
+
+#define	VTOC_FLAG_UNMNT		0x01	/* unmountable partition */
+#define VTOC_FLAG_RDONLY	0x10    /* partition is read/only */
+
+#define	VTOC_ASCII_LEN	128
+#define	VTOC_MAGIC	0xdabe
+#define	VTOC_RAW_PART	2
+#define	VTOC_SANITY	0x600ddeee
+#define	VTOC_VERSION	1
+#define	VTOC_VOLUME_LEN	8
+
+#define	VTOC8_NPARTS	8
+
+struct vtoc8 {
+	char		ascii[VTOC_ASCII_LEN];
+	uint32_t	version;
+	char		volume[VTOC_VOLUME_LEN];
+	uint16_t	nparts;
+	struct {
+		uint16_t	tag;
+		uint16_t	flag;
+	} part[VTOC8_NPARTS];
+	uint16_t	__alignment;
+	uint32_t	bootinfo[3];
+	uint32_t	sanity;
+	uint32_t	reserved[10];
+	uint32_t	timestamp[VTOC8_NPARTS];
+	uint16_t	wskip;
+	uint16_t	rskip;
+	char		padding[152];
+	uint16_t	rpm;
+	uint16_t	physcyls;
+	uint16_t	sparesecs;
+	uint16_t	spare1[2];
+	uint16_t	interleave;
+	uint16_t	ncyls;
+	uint16_t	altcyls;
+	uint16_t	nheads;
+	uint16_t	nsecs;
+	uint16_t	spare2[2];
+	struct {
+		uint32_t	cyl;
+		uint32_t	nblks;
+	} map[VTOC8_NPARTS];
+	uint16_t	magic;
+	uint16_t	cksum;
+};
+
+#ifdef CTASSERT
+CTASSERT(sizeof(struct vtoc8) == 512);
+#endif
+
+#endif /* _SYS_VTOC_H_ */