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      1 /*	$NetBSD: privahdi.h,v 1.4 2020/09/29 02:49:55 msaitoh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Julian Coleman, Waldi Ravens and Leo Weppelman.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/param.h>
     33 #include <sys/disklabel.h>
     34 #include <machine/ahdilabel.h>
     35 
     36 /* Flags for ahdi_readlabel() */
     37 #define	FORCE_AHDI	0x01	/* Read AHDI label when NetBSD label exists */
     38 #define	AHDI_IGN_EXISTS	0x02	/* Ignore partition exists flag (ICD tools) */
     39 #define	AHDI_IGN_EXT	0x04	/* Ignore last extended partition (HDDriver) */
     40 #define	AHDI_IGN_CKSUM	0x08	/* Ignore checksum mismatch on root sector */
     41 #define	AHDI_IGN_SPU	0x10	/* Ignore total sectors mismatch */
     42 
     43 /* Flags for ahdi_writelabel() */
     44 #define AHDI_KEEP_BOOT	0x01	/* Keep boot sector */
     45 #define AHDI_KEEP_BSL	0x02	/* Keep bad sector list */
     46 #define AHDI_KEEP_NBDA	0x04	/* Keep NetBSD label */
     47 
     48 struct ptable_part {
     49 	u_int8_t	flag;	/* partition flag */
     50 	u_int8_t	id[3];	/* id: GEM, BGM, NBD, ... */
     51 	u_int32_t	root;	/* root sector */
     52 	u_int32_t	start;	/* start sector */
     53 	u_int32_t	size;	/* size in sectors */
     54 	int		letter;	/* partition letter */
     55 };
     56 
     57 struct ahdi_ptable {
     58 	u_int32_t		nsectors;	/* number of sectors/track */
     59 	u_int32_t		ntracks;	/* number of tracks/cylinder */
     60 	u_int32_t		ncylinders;	/* number of cylinders */
     61 	u_int32_t		secpercyl;	/* number of sectors/cylinder */
     62 	u_int32_t		secperunit;	/* number of total sectors */
     63 	int			nparts;		/* number of partitions */
     64 	struct ptable_part	parts[MAXPARTITIONS];
     65 };
     66 
     67 int	 ahdi_buildlabel(struct ahdi_ptable *);
     68 int	 ahdi_checklabel(struct ahdi_ptable *);
     69 int	 ahdi_readlabel(struct ahdi_ptable *, char *, int);
     70 int	 ahdi_writedisktab(struct ahdi_ptable *, char *, char *, char *);
     71 int	 ahdi_writelabel(struct ahdi_ptable *, char *, int);
     72 
     73 extern int	ahdi_errp1, ahdi_errp2;
     74 
     75 /* Internal functions */
     76 u_int16_t		 ahdi_cksum(void *);
     77 void			 assign_letters(struct ahdi_ptable *);
     78 int			 check_magic(int, u_int, int);
     79 int			 dkcksum(struct disklabel *);
     80 void			*disk_read(int, u_int, u_int);
     81 int			 disk_write(int, u_int, u_int, void *);
     82 int			 invalidate_netbsd_label(int, u_int32_t);
     83 int			 openraw(const char *, int);
     84 struct disklabel	*read_dl(int);
     85 int			 read_rsec(int, struct ahdi_ptable *, u_int,
     86 			     u_int, int);
     87 int			 write_bsl(int);
     88