Initial source

1 files changed, 243 insertions, 0 deletions

diff --git a/scsi/rz_labels.h b/scsi/rz_labels.h
new file mode 100644
index 0000000..6ffaa11
--- /dev/null
+++ b/scsi/rz_labels.h
@@ -0,0 +1,243 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File: rz_labels.h
+ * 	Author: Alessandro Forin, Carnegie Mellon University
+ *	Date:	10/90
+ *
+ *	Definitions of various vendor's disk label formats.
+ */
+
+/* modified by Kevin T. Van Maren for the unified partition code */
+
+#ifndef	_RZ_LABELS_H_
+#define	_RZ_LABELS_H_
+
+/*
+ * This function looks for, and converts to BSD format
+ * a vendor's label.  It is only called if we did not
+ * find a standard BSD label on the disk pack.
+ */
+extern boolean_t	rz_vendor_label();
+
+/*
+ * Definition of the DEC disk label,
+ * which is located (you guessed it)
+ * at the end of the 4.3 superblock.
+ */
+
+struct dec_partition_info {
+	unsigned int	n_sectors;	/* how big the partition is */
+	unsigned int	offset;		/* sector no. of start of part. */
+};
+
+typedef struct {
+	int	magic;
+#	define	DEC_LABEL_MAGIC		0x032957
+	int	in_use;
+	struct  dec_partition_info partitions[8];
+} dec_label_t;
+
+/*
+ * Physical location on disk.
+ * This is independent of the filesystem we use,
+ * although of course we'll be in trouble if we
+ * screwup the 4.3 SBLOCK..
+ */
+
+#define	DEC_LABEL_BYTE_OFFSET	((2*8192)-sizeof(dec_label_t))
+
+
+/*
+ * Definitions for the primary boot information
+ * This is common, cuz the prom knows it.
+ */
+
+typedef struct {
+	int		pad[2];
+	unsigned int	magic;
+#	define		DEC_BOOT0_MAGIC	0x2757a
+	int		mode;
+	unsigned int	phys_base;
+	unsigned int	virt_base;
+	unsigned int	n_sectors;
+	unsigned int	start_sector;
+} dec_boot0_t;
+
+typedef struct {
+	dec_boot0_t	vax_boot;
+					/* BSD label still fits in pad */
+	char			pad[0x1e0-sizeof(dec_boot0_t)];
+	unsigned long		block_count;
+	unsigned long		starting_lbn;
+	unsigned long		flags;
+	unsigned long		checksum; /* add cmpl-2 all but here */
+} alpha_boot0_t;
+
+/*
+ * Definition of the Omron disk label,
+ * which is located at sector 0. It
+ * _is_ sector 0, actually.
+ */
+struct omron_partition_info {
+	unsigned long	offset;
+	unsigned long	n_sectors;
+};
+
+typedef struct {
+	char		packname[128];	/* in ascii */
+
+	char		pad[512-(128+8*8+11*2+4)];
+
+	unsigned short	badchk;	/* checksum of bad track */
+	unsigned long	maxblk;	/* # of total logical blocks */
+	unsigned short	dtype;	/* disk drive type */
+	unsigned short	ndisk;	/* # of disk drives */
+	unsigned short	ncyl;	/* # of data cylinders */
+	unsigned short	acyl;	/* # of alternate cylinders */
+	unsigned short	nhead;	/* # of heads in this partition */
+	unsigned short	nsect;	/* # of 512 byte sectors per track */
+	unsigned short	bhead;	/* identifies proper label locations */
+	unsigned short	ppart;	/* physical partition # */
+	struct omron_partition_info
+			partitions[8];
+
+	unsigned short	magic;	/* identifies this label format */
+#	define	OMRON_LABEL_MAGIC	0xdabe
+
+	unsigned short	cksum;	/* xor checksum of sector */
+
+} omron_label_t;
+
+/*
+ * Physical location on disk.
+ */
+
+#define	OMRON_LABEL_BYTE_OFFSET	0
+
+
+/*
+ * Definition of the i386AT disk label, which lives inside sector 0.
+ * This is the info the BIOS knows about, which we use for bootstrapping.
+ * It is common across all disks known to BIOS.
+ */
+
+struct bios_partition_info {
+
+	unsigned char	bootid;	/* bootable or not */
+#	define BIOS_BOOTABLE	128
+
+	unsigned char	beghead;/* beginning head, sector, cylinder */
+	unsigned char	begsect;/* begcyl is a 10-bit number. High 2 bits */
+	unsigned char	begcyl;	/*     are in begsect. */
+
+	unsigned char	systid;	/* filesystem type */
+#	define	UNIXOS		99	/* GNU HURD? */
+#       define  BSDOS          165	/* 386BSD */
+#       define  LINUXSWAP      130
+#       define  LINUXOS        131
+#       define  DOS_EXTENDED    05	/* container for logical partitions */
+
+#	define	HPFS		07	/* OS/2 Native */
+#	define	OS_2_BOOT	10	/* OS/2 Boot Manager */
+#	define	DOS_12		01	/* 12 bit FAT */
+#	define	DOS_16_OLD	04	/* < 32MB */
+#	define	DOS_16		06	/* >= 32MB (#4 not used anymore) */
+
+                                /* these numbers can't be trusted because */
+                                /* of newer, larger drives */
+	unsigned char	endhead;/* ending head, sector, cylinder */
+	unsigned char	endsect;/* endcyl is a 10-bit number.  High 2 bits */
+	unsigned char	endcyl;	/*     are in endsect. */
+
+	unsigned long	offset;
+	unsigned long	n_sectors;
+};
+
+typedef struct {
+/*	struct bios_partition_info	bogus compiler alignes wrong
+			partitions[4];
+*/
+	char		partitions[4*sizeof(struct bios_partition_info)];
+	unsigned short	magic;
+#	define	BIOS_LABEL_MAGIC	0xaa55
+} bios_label_t;
+
+/*
+ * Physical location on disk.
+ */
+
+#define	BIOS_LABEL_BYTE_OFFSET	446
+
+/*
+ * Definitions for the primary boot information
+ * This _is_ block 0
+ */
+
+#define	BIOS_BOOT0_SIZE	BIOS_LABEL_BYTE_OFFSET
+
+typedef struct {
+	char		boot0[BIOS_BOOT0_SIZE];	/* boot code */
+/*	bios_label_t label;	bogus compiler alignes wrong */
+	char		label[sizeof(bios_label_t)];
+} bios_boot0_t;
+
+/* Moved from i386at/nhdreg.h */
+#define PDLOCATION      29      /* VTOC sector */
+
+
+/* these are the partition types that can contain sub-partitions */
+/* enum types... */
+#define DISKPART_NONE   0       /* smallest piece flag !?! */
+#define DISKPART_DOS    1 
+#define DISKPART_BSD    2
+#define DISKPART_VTOC   3
+#define DISKPART_OMRON  4
+#define DISKPART_DEC    5       /* VAX disks? */
+#define DISKPART_UNKNOWN 99
+
+
+
+/* for NEW partition code */
+/* this is the basic partition structure.  an array of these is
+    filled, with element 0 being the whole drive, element 1-n being
+    the n top-level partitions, followed by 0+ groups of 1+ sub-partitions. */
+typedef struct diskpart {
+        short type;     /* DISKPART_xxx (see above) */
+        short fsys;     /* file system (if known) */
+        int nsubs;      /* number of sub-slices */
+        struct diskpart *subs;  /* pointer to the sub-partitions */
+        int start;      /* relative to the start of the DRIVE */
+        int size;       /* # sectors in this piece */
+} diskpart;
+
+int get_only_partition(void *driver_info, int (*bottom_read_fun)(),
+                        struct diskpart *array, int array_size,
+                        int disk_size, char *drive_name);
+        
+struct diskpart *lookup_part(struct diskpart *array, int dev_number);
+#endif	_RZ_LABELS_H_
+