/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_DKLABEL_H #define _SYS_DKLABEL_H #include <sys/isa_defs.h> #include <sys/types32.h> #include <sys/isa_defs.h> #ifdef __cplusplus extern "C" { #endif /* * Miscellaneous defines */ #define DKL_MAGIC 0xDABE /* magic number */ #define FKL_MAGIC 0xff /* magic number for DOS floppies */ #if defined(_SUNOS_VTOC_16) #define NDKMAP 16 /* # of logical partitions */ #define DK_LABEL_LOC 1 /* location of disk label */ #elif defined(_SUNOS_VTOC_8) #define NDKMAP 8 /* # of logical partitions */ #define DK_LABEL_LOC 0 /* location of disk label */ #else #error "No VTOC format defined." #endif #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 */ /* * Reserve two cylinders on SCSI disks. * One is for the backup disk label and the other is for the deviceid. * * IPI disks only reserve one cylinder, but they will go away soon. * CDROMs do not reserve any cylinders. */ #define DK_ACYL 2 /* * Format of a Sun disk label. * Resides in cylinder 0, head 0, sector 0. * * sizeof (struct dk_label) should be 512 (the current sector size), * but should the sector size increase, this structure should remain * at the beginning of the sector. */ #if !defined(BLKADDR_TYPE) #define BLKADDR_TYPE #if defined(_EXTVTOC) typedef unsigned long blkaddr_t; typedef unsigned int blkaddr32_t; #else typedef daddr_t blkaddr_t; typedef daddr32_t blkaddr32_t; #endif #endif /* * partition headers: section 1 * Returned in struct dk_allmap by ioctl DKIOC[SG]APART (dkio(4I)) */ struct dk_map { blkaddr_t dkl_cylno; /* starting cylinder */ blkaddr_t dkl_nblk; /* number of blocks; if == 0, */ /* partition is undefined */ }; /* * partition headers: section 1 * Fixed size for on-disk dk_label */ struct dk_map32 { blkaddr32_t dkl_cylno; /* starting cylinder */ blkaddr32_t dkl_nblk; /* number of blocks; if == 0, */ /* partition is undefined */ }; /* * partition headers: section 2, * brought over from AT&T SVr4 vtoc structure. */ struct dk_map2 { uint16_t p_tag; /* ID tag of partition */ uint16_t p_flag; /* permission flag */ }; struct dkl_partition { uint16_t p_tag; /* ID tag of partition */ uint16_t p_flag; /* permision flags */ blkaddr32_t p_start; /* start sector no of partition */ blkaddr32_t p_size; /* # of blocks in partition */ }; /* * VTOC inclusions from AT&T SVr4 * Fixed sized types for on-disk VTOC */ struct dk_vtoc { #if defined(_SUNOS_VTOC_16) uint32_t v_bootinfo[3]; /* info for 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 dkl_partition v_part[NDKMAP]; /* partition headers */ time32_t timestamp[NDKMAP]; /* partition timestamp (unsupported) */ char v_asciilabel[LEN_DKL_ASCII]; /* for compatibility */ #elif defined(_SUNOS_VTOC_8) uint32_t v_version; /* layout version */ char v_volume[LEN_DKL_VVOL]; /* volume name */ uint16_t v_nparts; /* number of partitions */ struct dk_map2 v_part[NDKMAP]; /* partition hdrs, sec 2 */ uint32_t v_bootinfo[3]; /* info needed by mboot */ uint32_t v_sanity; /* to verify vtoc sanity */ uint32_t v_reserved[10]; /* free space */ time32_t v_timestamp[NDKMAP]; /* partition timestamp */ #else #error "No VTOC format defined." #endif }; /* * define the amount of disk label padding needed to make * the entire structure occupy 512 bytes. */ #if defined(_SUNOS_VTOC_16) #define LEN_DKL_PAD (DK_LABEL_SIZE - \ ((sizeof (struct dk_vtoc) + \ (4 * sizeof (uint32_t)) + \ (12 * sizeof (uint16_t)) + \ (2 * (sizeof (uint16_t)))))) #elif defined(_SUNOS_VTOC_8) #define LEN_DKL_PAD (DK_LABEL_SIZE \ - ((LEN_DKL_ASCII) + \ (sizeof (struct dk_vtoc)) + \ (sizeof (struct dk_map32) * NDKMAP) + \ (14 * (sizeof (uint16_t))) + \ (2 * (sizeof (uint16_t))))) #else #error "No VTOC format defined." #endif struct dk_label { #if defined(_SUNOS_VTOC_16) 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 */ #elif defined(_SUNOS_VTOC_8) char dkl_asciilabel[LEN_DKL_ASCII]; /* for compatibility */ struct dk_vtoc dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */ uint16_t dkl_write_reinstruct; /* # sectors to skip, writes */ uint16_t dkl_read_reinstruct; /* # sectors to skip, reads */ char dkl_pad[LEN_DKL_PAD]; /* unused part of 512 bytes */ uint16_t dkl_rpm; /* rotations per minute */ uint16_t dkl_pcyl; /* # physical cylinders */ uint16_t dkl_apc; /* alternates per cylinder */ uint16_t dkl_obs1; /* obsolete */ uint16_t dkl_obs2; /* obsolete */ uint16_t dkl_intrlv; /* interleave factor */ uint16_t dkl_ncyl; /* # of data cylinders */ uint16_t dkl_acyl; /* # of alternate cylinders */ uint16_t dkl_nhead; /* # of heads in this partition */ uint16_t dkl_nsect; /* # of sectors per track */ uint16_t dkl_obs3; /* obsolete */ uint16_t dkl_obs4; /* obsolete */ struct dk_map32 dkl_map[NDKMAP]; /* logical partition headers */ #else #error "No VTOC format defined." #endif uint16_t dkl_magic; /* identifies this label format */ uint16_t dkl_cksum; /* xor checksum of sector */ }; #if defined(_SUNOS_VTOC_16) #define dkl_asciilabel dkl_vtoc.v_asciilabel #define v_timestamp timestamp #elif defined(_SUNOS_VTOC_8) /* * These defines are for historic compatibility with old drivers. */ #define dkl_gap1 dkl_obs1 /* used to be gap1 */ #define dkl_gap2 dkl_obs2 /* used to be gap2 */ #define dkl_bhead dkl_obs3 /* used to be label head offset */ #define dkl_ppart dkl_obs4 /* used to by physical partition */ #else #error "No VTOC format defined." #endif struct fk_label { /* DOS floppy label */ uchar_t fkl_type; uchar_t fkl_magich; uchar_t fkl_magicl; uchar_t filler; }; /* * Layout of stored fabricated device id (on-disk) */ #define DK_DEVID_BLKSIZE (512) #define DK_DEVID_SIZE (DK_DEVID_BLKSIZE - ((sizeof (uchar_t) * 7))) #define DK_DEVID_REV_MSB (0) #define DK_DEVID_REV_LSB (1) struct dk_devid { uchar_t dkd_rev_hi; /* revision (MSB) */ uchar_t dkd_rev_lo; /* revision (LSB) */ uchar_t dkd_flags; /* flags (not used yet) */ uchar_t dkd_devid[DK_DEVID_SIZE]; /* devid stored here */ uchar_t dkd_checksum3; /* checksum (MSB) */ uchar_t dkd_checksum2; uchar_t dkd_checksum1; uchar_t dkd_checksum0; /* checksum (LSB) */ }; #define DKD_GETCHKSUM(dkd) ((dkd)->dkd_checksum3 << 24) + \ ((dkd)->dkd_checksum2 << 16) + \ ((dkd)->dkd_checksum1 << 8) + \ ((dkd)->dkd_checksum0) #define DKD_FORMCHKSUM(c, dkd) (dkd)->dkd_checksum3 = hibyte(hiword((c))); \ (dkd)->dkd_checksum2 = lobyte(hiword((c))); \ (dkd)->dkd_checksum1 = hibyte(loword((c))); \ (dkd)->dkd_checksum0 = lobyte(loword((c))); #ifdef __cplusplus } #endif #endif /* _SYS_DKLABEL_H */
