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authorChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
commit9928d99936105b4653d2d1b8ca74dc3ffba5c71e (patch)
tree06aa4f5e9f0055027c6fb54dd47a8414cf2fba32 /src/bsd.h
First version in git
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+/*
+
+ File: bsd.h
+
+ Copyright (C) 1998-2004,2006 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
+/* 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[BSD_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 */
+int check_BSD(disk_t *disk_car,partition_t *partition,const int verbose,const unsigned int max_partitions);
+int test_BSD(disk_t *disk_car, const struct disklabel*bsd_header,partition_t *partition,const int verbose, const int dump_ind, const unsigned int max_partitions);
+int recover_BSD(disk_t *disk_car, const struct disklabel*bsd_header,partition_t *partition,const int verbose, const int dump_ind);
+
+#endif