mirror of https://github.com/F-Stack/f-stack.git
172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1987, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)disklabel.h 8.2 (Berkeley) 7/10/94
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* $FreeBSD$
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*/
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#ifndef _SYS_DISKLABEL_H_
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#define _SYS_DISKLABEL_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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#include <sys/disk/bsd.h>
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/* Disk description table, see disktab(5) */
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#define _PATH_DISKTAB "/etc/disktab"
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/*
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* The label is in block 0 or 1, possibly offset from the beginning
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* to leave room for a bootstrap, etc.
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* XXX these should be defined per controller (or drive) elsewhere, not here!
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* XXX in actuality it can't even be per controller or drive. It should be
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* constant/fixed across storage hardware and CPU architectures. Disks can
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* travel from one machine to another and a label created on one machine
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* should be detectable and understood by the other.
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*/
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#define LABELSECTOR 1 /* sector containing label */
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#define LABELOFFSET 0 /* offset of label in sector */
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#define DISKMAGIC BSD_MAGIC /* The disk magic number */
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#ifndef MAXPARTITIONS
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#define MAXPARTITIONS BSD_NPARTS_MIN
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#endif
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/* Size of bootblock area in sector-size neutral bytes */
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#define BBSIZE BSD_BOOTBLOCK_SIZE
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#define LABEL_PART BSD_PART_RAW
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#define RAW_PART BSD_PART_RAW
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#define SWAP_PART BSD_PART_SWAP
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#define NDDATA BSD_NDRIVEDATA
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#define NSPARE BSD_NSPARE
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static __inline u_int16_t dkcksum(struct disklabel *lp);
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static __inline u_int16_t
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dkcksum(struct disklabel *lp)
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{
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u_int16_t *start, *end;
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u_int16_t sum = 0;
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start = (u_int16_t *)lp;
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end = (u_int16_t *)&lp->d_partitions[lp->d_npartitions];
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while (start < end)
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sum ^= *start++;
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return (sum);
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}
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#ifdef DKTYPENAMES
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static const char *dktypenames[] = {
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"unknown",
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"SMD",
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"MSCP",
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"old DEC",
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"SCSI",
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"ESDI",
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"ST506",
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"HP-IB",
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"HP-FL",
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"type 9",
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"floppy",
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"CCD",
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"Vinum",
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"DOC2K",
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"Raid",
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"?",
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"jfs",
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NULL
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};
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#define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
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#endif
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#ifdef FSTYPENAMES
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static const char *fstypenames[] = {
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"unused",
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"swap",
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"Version 6",
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"Version 7",
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"System V",
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"4.1BSD",
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"Eighth Edition",
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"4.2BSD",
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"MSDOS",
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"4.4LFS",
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"unknown",
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"HPFS",
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"ISO9660",
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"boot",
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"vinum",
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"raid",
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"Filecore",
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"EXT2FS",
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"NTFS",
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"?",
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"ccd",
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"jfs",
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"HAMMER",
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"HAMMER2",
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"UDF",
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"?",
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"EFS",
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"ZFS",
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"?",
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"?",
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"nandfs",
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NULL
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};
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#define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
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#endif
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/*
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* NB: <sys/disk.h> defines ioctls from 'd'/128 and up.
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*/
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/*
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* Functions for proper encoding/decoding of struct disklabel into/from
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* bytestring.
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*/
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void bsd_partition_le_dec(u_char *ptr, struct partition *d);
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int bsd_disklabel_le_dec(u_char *ptr, struct disklabel *d, int maxpart);
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void bsd_partition_le_enc(u_char *ptr, struct partition *d);
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void bsd_disklabel_le_enc(u_char *ptr, struct disklabel *d);
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#ifndef _KERNEL
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__BEGIN_DECLS
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struct disklabel *getdiskbyname(const char *);
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__END_DECLS
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#endif
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#endif /* !_SYS_DISKLABEL_H_ */
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