| /*- |
| * 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_TAG_FREEBSD_NANDFS 0x0905 |
| |
| #define VTOC_FLAG_UNMNT 0x01 /* unmountable partition */ |
| #define VTOC_FLAG_RDONLY 0x10 /* partition is read/only */ |
| |
| #define VTOC_ASCII_LEN 128 |
| #define VTOC_BOOTSIZE 8192 /* 16 sectors */ |
| #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] __packed; |
| 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; |
| } __packed; |
| |
| #ifdef CTASSERT |
| CTASSERT(sizeof(struct vtoc8) == 512); |
| #endif |
| |
| #define NDKMAP 16 /* # of logical partitions */ |
| #define DK_LABEL_LOC 1 /* location of disk label */ |
| #define LEN_DKL_ASCII 128 /* length of dkl_asciilabel */ |
| #define LEN_DKL_VVOL 8 /* length of v_volume */ |
| #define DK_LABEL_SIZE 512 /* size of disk label */ |
| #define DK_MAX_BLOCKS 0x7fffffff /* max # of blocks handled */ |
| |
| struct dk_vtoc { |
| uint32_t v_bootinfo[3]; /* info needed by mboot (unsupported) */ |
| uint32_t v_sanity; /* to verify vtoc sanity */ |
| uint32_t v_version; /* layout version */ |
| char v_volume[LEN_DKL_VVOL]; /* volume name */ |
| uint16_t v_sectorsz; /* sector size in bytes */ |
| uint16_t v_nparts; /* number of partitions */ |
| uint32_t v_reserved[10]; /* free space */ |
| struct { |
| uint16_t p_tag; /* ID tag of partition */ |
| uint16_t p_flag; /* permission flags */ |
| uint32_t p_start;/* start sector no of partition */ |
| int32_t p_size; /* # of blocks in partition */ |
| } v_part[NDKMAP]; /* partition headers */ |
| uint32_t timestamp[NDKMAP]; /* partition timestamp (unsupported) */ |
| char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */ |
| }; |
| |
| #define LEN_DKL_PAD (DK_LABEL_SIZE - \ |
| ((sizeof (struct dk_vtoc) + \ |
| (4 * sizeof (uint32_t)) + \ |
| (12 * sizeof (uint16_t)) + \ |
| (2 * (sizeof (uint16_t)))))) |
| |
| struct dk_label { |
| struct dk_vtoc dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */ |
| uint32_t dkl_pcyl; /* # of physical cylinders */ |
| uint32_t dkl_ncyl; /* # of data cylinders */ |
| uint16_t dkl_acyl; /* # of alternate cylinders */ |
| uint16_t dkl_bcyl; /* cyl offset (for fixed head area) */ |
| uint32_t dkl_nhead; /* # of heads */ |
| uint32_t dkl_nsect; /* # of data sectors per track */ |
| uint16_t dkl_intrlv; /* interleave factor */ |
| uint16_t dkl_skew; /* skew factor */ |
| uint16_t dkl_apc; /* alternates per cyl (SCSI only) */ |
| uint16_t dkl_rpm; /* revolutions per minute */ |
| uint16_t dkl_write_reinstruct; /* # sectors to skip, writes */ |
| uint16_t dkl_read_reinstruct; /* # sectors to skip, reads */ |
| uint16_t dkl_extra[4]; /* for compatible expansion */ |
| char dkl_pad[LEN_DKL_PAD]; /* unused part of 512 bytes */ |
| uint16_t dkl_magic; /* identifies this label format */ |
| uint16_t dkl_cksum; /* xor checksum of sector */ |
| }; |
| |
| #ifdef CTASSERT |
| CTASSERT(sizeof(struct dk_label) == 512); |
| #endif |
| |
| #endif /* _SYS_VTOC_H_ */ |