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/*
File: bsd.h
Copyright (C) 1998-2004,2006,2008 Christophe GRENIER <grenier@cgsecurity.org>
This software is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Come mainly from sys/disklabel.h and disktab.h */
#ifndef _BSD_H
#define _BSD_H
#ifdef __cplusplus
extern "C" {
#endif
/* BSD_DISKLABEL_SIZE is 276 */
#define BSD_DISKLABEL_SIZE 512
#define STANDALONE
#define BBSIZE 8192 /* size of boot area, with label */
#ifdef __i386__
#define LABELSECTOR 1 /* sector containing label */
#define LABELOFFSET 0 /* offset of label in sector */
#endif
#ifndef LABELSECTOR
#define LABELSECTOR 0 /* sector containing label */
#endif
#ifndef LABELOFFSET
#define LABELOFFSET 64 /* offset of label in sector */
#endif
#define DISKMAGIC ((uint32_t)0x82564557) /* The disk magic number */
#define LABEL_PART 2 /* partition containing label */
#define RAW_PART 2 /* partition containing whole disk */
#define SWAP_PART 1 /* partition normally containing swap */
struct disklabel {
uint32_t d_magic; /* the magic number */
uint16_t d_type; /* drive type */
uint16_t d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
/*
* d_packname contains the pack identifier and is returned when
* the disklabel is read off the disk or in-core copy.
* d_boot0 and d_boot1 are the (optional) names of the
* primary (block 0) and secondary (block 1-15) bootstraps
* as found in /usr/mdec. These are returned when using
* getdiskbyname(3) to retrieve the values from /etc/disktab.
*/
#if defined(KERNEL) || defined(STANDALONE)
char d_packname[16]; /* pack identifier */
#else
union {
char un_d_packname[16]; /* pack identifier */
struct {
char *un_d_boot0; /* primary bootstrap name */
char *un_d_boot1; /* secondary bootstrap name */
} un_b;
} d_un;
#define d_packname d_un.un_d_packname
#define d_boot0 d_un.un_b.un_d_boot0
#define d_boot1 d_un.un_b.un_d_boot1
#endif /* ! KERNEL or STANDALONE */
/* disk geometry: */
uint32_t d_secsize; /* # of bytes per sector */
uint32_t d_nsectors; /* # of data sectors per track */
uint32_t d_ntracks; /* # of tracks per cylinder */
uint32_t d_ncylinders; /* # of data cylinders per unit */
uint32_t d_secpercyl; /* # of data sectors per cylinder */
uint32_t d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below are not counted in
* d_nsectors or d_secpercyl. Spare sectors are assumed to
* be physical sectors which occupy space at the end of each
* track and/or cylinder.
*/
uint16_t d_sparespertrack; /* # of spare sectors per track */
uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternate cylinders include maintenance, replacement, configuration
* description areas, etc.
*/
uint32_t d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
* d_interleave, d_trackskew and d_cylskew describe perturbations
* in the media format used to compensate for a slow controller.
* Interleave is physical sector interleave, set up by the
* formatter or controller when formatting. When interleaving is
* in use, logically adjacent sectors are not physically
* contiguous, but instead are separated by some number of
* sectors. It is specified as the ratio of physical sectors
* traversed per logical sector. Thus an interleave of 1:1
* implies contiguous layout, while 2:1 implies that logical
* sector 0 is separated by one sector from logical sector 1.
* d_trackskew is the offset of sector 0 on track N relative to
* sector 0 on track N-1 on the same cylinder. Finally, d_cylskew
* is the offset of sector 0 on cylinder N relative to sector 0
* on cylinder N-1.
*/
uint16_t d_rpm; /* rotational speed */
uint16_t d_interleave; /* hardware sector interleave */
uint16_t d_trackskew; /* sector 0 skew, per track */
uint16_t d_cylskew; /* sector 0 skew, per cylinder */
uint32_t d_headswitch; /* head switch time, usec */
uint32_t d_trkseek; /* track-to-track seek, usec */
uint32_t d_flags; /* generic flags */
#define NDDATA 5
uint32_t d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
uint32_t d_spare[NSPARE]; /* reserved for future use */
uint32_t d_magic2; /* the magic number (again) */
uint16_t d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
uint16_t d_npartitions; /* number of partitions in following */
uint32_t d_bbsize; /* size of boot area at sn0, bytes */
uint32_t d_sbsize; /* max size of fs superblock, bytes */
struct partition { /* the partition table */
uint32_t p_size; /* number of sectors in partition */
uint32_t p_offset; /* starting sector */
uint32_t p_fsize; /* filesystem basic fragment size */
uint8_t p_fstype; /* filesystem type, see below */
uint8_t p_frag; /* filesystem fragments per block */
union {
uint16_t cpg; /* UFS: FS cylinders per group */
uint16_t sgs; /* LFS: FS segment shift */
} __partition_u1;
#define p_cpg __partition_u1.cpg
#define p_sgs __partition_u1.sgs
} d_partitions[OPENBSD_MAXPARTITIONS]; /* actually may be more */
};
#define TST_FS_UNUSED 0 /* unused */
#define TST_FS_SWAP 1 /* swap */
#define TST_FS_V6 2 /* Sixth Edition */
#define TST_FS_V7 3 /* Seventh Edition */
#define TST_FS_SYSV 4 /* System V */
#define TST_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
#define TST_FS_V8 6 /* Eighth Edition, 4K blocks */
#define TST_FS_BSDFFS 7 /* 4.2BSD fast filesystem */
#define TST_FS_MSDOS 8 /* MSDOS filesystem */
#define TST_FS_BSDLFS 9 /* 4.4BSD log-structured filesystem */
#define TST_FS_OTHER 10 /* in use, but unknown/unsupported */
#define TST_FS_HPFS 11 /* OS/2 high-performance filesystem */
#define TST_FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
#define TST_FS_BOOT 13 /* partition contains bootstrap */
#define TST_FS_VINUM 14 /* Vinum drive */
#define TST_FS_RAID 15 /* RAIDFrame drive */
#define TST_FS_JFS2 21 /* IBM JFS2 */
/*@
@ requires \valid(disk_car);
@ requires valid_disk(disk_car);
@ requires \valid(partition);
@ requires separation: \separated(disk_car, partition);
@ decreases 0;
@*/
int check_BSD(disk_t *disk_car, partition_t *partition, const int verbose, const unsigned int max_partitions);
/*@
@ requires \valid_read(disk_car);
@ requires valid_disk(disk_car);
@ requires \valid_read(bsd_header);
@ requires \valid(partition);
@ requires separation: \separated(disk_car, bsd_header, partition);
@*/
int recover_BSD(const disk_t *disk_car, const struct disklabel*bsd_header, partition_t *partition, const int verbose, const int dump_ind);
#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif
#endif
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