/*- * 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_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_ */
