/* * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1991 by NeXT Computer, Inc. * * File: bsd/dev/disk_label.h - NeXT disk label definition. * */ #ifndef _BSD_DEV_DISK_LABEL_ #define _BSD_DEV_DISK_LABEL_ #include <sys/appleapiopts.h> #include <sys/disktab.h> #ifdef __APPLE_API_OBSOLETE #define NLABELS 4 /* # of labels on a disk */ #define MAXLBLLEN 24 /* dl_label[] size */ #define NBAD 1670 /* sized to make label ~= 8KB */ /* * if dl_version >= DL_V3 then the bad block table is relocated * to a structure separate from the disk label. */ typedef union { unsigned short DL_v3_checksum; int DL_bad[NBAD]; /* block number that is bad */ } dl_un_t; typedef struct disk_label { int dl_version; // label version number int dl_label_blkno; // block # where this label is int dl_size; // size of media area (sectors) char dl_label[MAXLBLLEN]; // media label unsigned dl_flags; // flags (see DL_xxx, below) unsigned dl_tag; // volume tag struct disktab dl_dt; // common info in disktab dl_un_t dl_un; unsigned short dl_checksum; // ones complement checksum /* add things here so dl_checksum stays in a fixed place */ } disk_label_t; /* * Known label versions. */ #define DL_V1 0x4e655854 /* version #1: "NeXT" */ #define DL_V2 0x646c5632 /* version #2: "dlV2" */ #define DL_V3 0x646c5633 /* version #3: "dlV3" */ #define DL_VERSION DL_V3 /* default version */ /* * dl_flags values */ #define DL_UNINIT 0x80000000 /* label is uninitialized */ /* * Aliases for disktab fields */ #define dl_name dl_dt.d_name #define dl_type dl_dt.d_type #define dl_part dl_dt.d_partitions #define dl_front dl_dt.d_front #define dl_back dl_dt.d_back #define dl_ngroups dl_dt.d_ngroups #define dl_ag_size dl_dt.d_ag_size #define dl_ag_alts dl_dt.d_ag_alts #define dl_ag_off dl_dt.d_ag_off #define dl_secsize dl_dt.d_secsize #define dl_ncyl dl_dt.d_ncylinders #define dl_nsect dl_dt.d_nsectors #define dl_ntrack dl_dt.d_ntracks #define dl_rpm dl_dt.d_rpm #define dl_bootfile dl_dt.d_bootfile #define dl_boot0_blkno dl_dt.d_boot0_blkno #define dl_hostname dl_dt.d_hostname #define dl_rootpartition dl_dt.d_rootpartition #define dl_rwpartition dl_dt.d_rwpartition /* * Other aliases */ #define dl_v3_checksum dl_un.DL_v3_checksum #define dl_bad dl_un.DL_bad #endif /* __APPLE_API_OBSOLETE */ #endif /* _BSD_DEV_DISK_LABEL_ */