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Annotation of sys/sys/disklabel.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: disklabel.h,v 1.39 2007/07/11 04:50:43 miod Exp $     */
        !             2: /*     $NetBSD: disklabel.h,v 1.41 1996/05/10 23:07:37 mark Exp $      */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1987, 1988, 1993
        !             6:  *     The Regents of the University of California.  All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. Neither the name of the University nor the names of its contributors
        !            17:  *    may be used to endorse or promote products derived from this software
        !            18:  *    without specific prior written permission.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            30:  * SUCH DAMAGE.
        !            31:  *
        !            32:  *     @(#)disklabel.h 8.2 (Berkeley) 7/10/94
        !            33:  */
        !            34:
        !            35: /*
        !            36:  * Disk description table, see disktab(5)
        !            37:  */
        !            38: #define        _PATH_DISKTAB   "/etc/disktab"
        !            39: #define        DISKTAB         "/etc/disktab"          /* deprecated */
        !            40:
        !            41: /*
        !            42:  * Each disk has a label which includes information about the hardware
        !            43:  * disk geometry, filesystem partitions, and drive specific information.
        !            44:  * The location of the label, as well as the number of partitions the
        !            45:  * label can describe and the number of the "whole disk" (raw)
        !            46:  * paritition are machine dependent.
        !            47:  */
        !            48: #include <machine/disklabel.h>
        !            49:
        !            50: /*
        !            51:  * The absolute maximum number of disk partitions allowed.
        !            52:  * This is the maximum value of MAXPARTITIONS for which 'struct disklabel'
        !            53:  * is <= DEV_BSIZE bytes long.  If MAXPARTITIONS is greater than this, beware.
        !            54:  */
        !            55: #define        MAXMAXPARTITIONS        22
        !            56: #if MAXPARTITIONS > MAXMAXPARTITIONS
        !            57: #warn beware: MAXPARTITIONS bigger than MAXMAXPARTITIONS
        !            58: #endif
        !            59:
        !            60: /*
        !            61:  * Translate between device numbers and major/disk unit/disk partition.
        !            62:  */
        !            63: #define        DISKUNIT(dev)   (minor(dev) / MAXPARTITIONS)
        !            64: #define        DISKPART(dev)   (minor(dev) % MAXPARTITIONS)
        !            65: #define        RAW_PART        2       /* 'c' partition */
        !            66: #define        DISKMINOR(unit, part) \
        !            67:     (((unit) * MAXPARTITIONS) + (part))
        !            68: #define        MAKEDISKDEV(maj, unit, part) \
        !            69:     (makedev((maj), DISKMINOR((unit), (part))))
        !            70: #define        DISKLABELDEV(dev) \
        !            71:     (MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART))
        !            72:
        !            73: #define DISKMAGIC      ((u_int32_t)0x82564557) /* The disk magic number */
        !            74:
        !            75: #define MAXDISKSIZE    0x1fffffffffffLL        /* 47 bits of reach */
        !            76:
        !            77: #ifndef _LOCORE
        !            78: struct disklabel {
        !            79:        u_int32_t d_magic;              /* the magic number */
        !            80:        u_int16_t d_type;               /* drive type */
        !            81:        u_int16_t d_subtype;            /* controller/d_type specific */
        !            82:        char      d_typename[16];       /* type name, e.g. "eagle" */
        !            83:
        !            84:        /*
        !            85:         * d_packname contains the pack identifier and is returned when
        !            86:         * the disklabel is read off the disk or in-core copy.
        !            87:         * d_boot0 and d_boot1 are the (optional) names of the
        !            88:         * primary (block 0) and secondary (block 1-15) bootstraps
        !            89:         * as found in /usr/mdec.  These are returned when using
        !            90:         * getdiskbyname(3) to retrieve the values from /etc/disktab.
        !            91:         */
        !            92:        union {
        !            93:                char    un_d_packname[16];      /* pack identifier */
        !            94:                struct {
        !            95:                        char *un_d_boot0;       /* primary bootstrap name */
        !            96:                        char *un_d_boot1;       /* secondary bootstrap name */
        !            97:                } un_b;
        !            98:        } d_un;
        !            99: #define d_packname     d_un.un_d_packname
        !           100: #define d_boot0                d_un.un_b.un_d_boot0
        !           101: #define d_boot1                d_un.un_b.un_d_boot1
        !           102:
        !           103:                        /* disk geometry: */
        !           104:        u_int32_t d_secsize;            /* # of bytes per sector */
        !           105:        u_int32_t d_nsectors;           /* # of data sectors per track */
        !           106:        u_int32_t d_ntracks;            /* # of tracks per cylinder */
        !           107:        u_int32_t d_ncylinders;         /* # of data cylinders per unit */
        !           108:        u_int32_t d_secpercyl;          /* # of data sectors per cylinder */
        !           109:        u_int32_t d_secperunit;         /* # of data sectors per unit */
        !           110:
        !           111:        /*
        !           112:         * Spares (bad sector replacements) below are not counted in
        !           113:         * d_nsectors or d_secpercyl.  Spare sectors are assumed to
        !           114:         * be physical sectors which occupy space at the end of each
        !           115:         * track and/or cylinder.
        !           116:         */
        !           117:        u_int16_t d_sparespertrack;     /* # of spare sectors per track */
        !           118:        u_int16_t d_sparespercyl;       /* # of spare sectors per cylinder */
        !           119:        /*
        !           120:         * Alternate cylinders include maintenance, replacement, configuration
        !           121:         * description areas, etc.
        !           122:         */
        !           123:        u_int32_t d_acylinders;         /* # of alt. cylinders per unit */
        !           124:
        !           125:                        /* hardware characteristics: */
        !           126:        /*
        !           127:         * d_interleave, d_trackskew and d_cylskew describe perturbations
        !           128:         * in the media format used to compensate for a slow controller.
        !           129:         * Interleave is physical sector interleave, set up by the
        !           130:         * formatter or controller when formatting.  When interleaving is
        !           131:         * in use, logically adjacent sectors are not physically
        !           132:         * contiguous, but instead are separated by some number of
        !           133:         * sectors.  It is specified as the ratio of physical sectors
        !           134:         * traversed per logical sector.  Thus an interleave of 1:1
        !           135:         * implies contiguous layout, while 2:1 implies that logical
        !           136:         * sector 0 is separated by one sector from logical sector 1.
        !           137:         * d_trackskew is the offset of sector 0 on track N relative to
        !           138:         * sector 0 on track N-1 on the same cylinder.  Finally, d_cylskew
        !           139:         * is the offset of sector 0 on cylinder N relative to sector 0
        !           140:         * on cylinder N-1.
        !           141:         */
        !           142:        u_int16_t d_rpm;                /* rotational speed */
        !           143:        u_int16_t d_interleave;         /* hardware sector interleave */
        !           144:        u_int16_t d_trackskew;          /* sector 0 skew, per track */
        !           145:        u_int16_t d_cylskew;            /* sector 0 skew, per cylinder */
        !           146:        u_int32_t d_headswitch;         /* head switch time, usec */
        !           147:        u_int32_t d_trkseek;            /* track-to-track seek, usec */
        !           148:        u_int32_t d_flags;              /* generic flags */
        !           149: #define NDDATA 5
        !           150:        u_int32_t d_drivedata[NDDATA];  /* drive-type specific information */
        !           151:        u_int16_t d_secperunith;        /* # of data sectors (high part) */
        !           152:        u_int16_t d_version;            /* version # (1=48 bit addressing) */
        !           153: #define NSPARE 4
        !           154:        u_int32_t d_spare[NSPARE];      /* reserved for future use */
        !           155:        u_int32_t d_magic2;             /* the magic number (again) */
        !           156:        u_int16_t d_checksum;           /* xor of data incl. partitions */
        !           157:
        !           158:                        /* filesystem and partition information: */
        !           159:        u_int16_t d_npartitions;        /* number of partitions in following */
        !           160:        u_int32_t d_bbsize;             /* size of boot area at sn0, bytes */
        !           161:        u_int32_t d_sbsize;             /* max size of fs superblock, bytes */
        !           162:        struct  partition {             /* the partition table */
        !           163:                u_int32_t p_size;       /* number of sectors in partition */
        !           164:                u_int32_t p_offset;     /* starting sector */
        !           165:                u_int16_t p_offseth;    /* starting sector (high part) */
        !           166:                u_int16_t p_sizeh;      /* number of sectors (high part) */
        !           167:                u_int8_t p_fstype;      /* filesystem type, see below */
        !           168:                u_int8_t p_fragblock;   /* encoded filesystem frag/block */
        !           169:                u_int16_t p_cpg;        /* UFS: FS cylinders per group */
        !           170:        } d_partitions[MAXPARTITIONS];  /* actually may be more */
        !           171: };
        !           172:
        !           173:
        !           174: struct __partitionv0 {         /* the partition table */
        !           175:        u_int32_t p_size;       /* number of sectors in partition */
        !           176:        u_int32_t p_offset;     /* starting sector */
        !           177:        u_int32_t p_fsize;      /* filesystem basic fragment size */
        !           178:        u_int8_t p_fstype;      /* filesystem type, see below */
        !           179:        u_int8_t p_frag;        /* filesystem fragments per block */
        !           180:        union {
        !           181:                u_int16_t cpg;  /* UFS: FS cylinders per group */
        !           182:                u_int16_t sgs;  /* LFS: FS segment shift */
        !           183:        } __partitionv0_u1;
        !           184: };
        !           185:
        !           186: #else /* _LOCORE */
        !           187:        /*
        !           188:         * offsets for asm boot files.
        !           189:         */
        !           190:        .set    d_secsize,40
        !           191:        .set    d_nsectors,44
        !           192:        .set    d_ntracks,48
        !           193:        .set    d_ncylinders,52
        !           194:        .set    d_secpercyl,56
        !           195:        .set    d_secperunit,60
        !           196:        .set    d_end_,404              /* size of disk label */
        !           197: #endif /* _LOCORE */
        !           198:
        !           199:
        !           200: #define DISKLABELV1_FFS_FRAGBLOCK(fsize, frag)                         \
        !           201:        ((fsize) * (frag) == 0 ? 0 :                            \
        !           202:        (((ffs((fsize) * (frag)) - 13) << 3) | (ffs(frag))))
        !           203:
        !           204: #define DISKLABELV1_FFS_BSIZE(i) ((i) == 0 ? 0 : (1 << (((i) >> 3) + 12)))
        !           205: #define DISKLABELV1_FFS_FRAG(i) ((i) == 0 ? 0 : (1 << (((i) & 0x07) - 1)))
        !           206: #define DISKLABELV1_FFS_FSIZE(i) (DISKLABELV1_FFS_FRAG(i) == 0 ? 0 : \
        !           207:        (DISKLABELV1_FFS_BSIZE(i) / DISKLABELV1_FFS_FRAG(i)))
        !           208:
        !           209: #define DL_GETPSIZE(p)         (((u_int64_t)(p)->p_sizeh << 32) + (p)->p_size)
        !           210: #define DL_GETPOFFSET(p)       (((u_int64_t)(p)->p_offseth << 32) + (p)->p_offset)
        !           211: #define DL_GETDSIZE(d)         (((u_int64_t)(d)->d_secperunith << 32) + \
        !           212:                                    (d)->d_secperunit)
        !           213:
        !           214: #define DL_SETPSIZE(p, n)      do { \
        !           215:                                        daddr64_t x = (n); \
        !           216:                                        (p)->p_sizeh = x >> 32; \
        !           217:                                        (p)->p_size = x; \
        !           218:                                } while (0)
        !           219: #define DL_SETPOFFSET(p, n)    do { \
        !           220:                                        daddr64_t x = (n); \
        !           221:                                        (p)->p_offseth = x >> 32; \
        !           222:                                        (p)->p_offset = x; \
        !           223:                                } while (0)
        !           224: #define DL_SETDSIZE(d, n)      do { \
        !           225:                                        daddr64_t x = (n); \
        !           226:                                        (d)->d_secperunith = x >> 32; \
        !           227:                                        (d)->d_secperunit = x; \
        !           228:                                } while (0)
        !           229:
        !           230: /* d_type values: */
        !           231: #define        DTYPE_SMD               1               /* SMD, XSMD; VAX hp/up */
        !           232: #define        DTYPE_MSCP              2               /* MSCP */
        !           233: #define        DTYPE_DEC               3               /* other DEC (rk, rl) */
        !           234: #define        DTYPE_SCSI              4               /* SCSI */
        !           235: #define        DTYPE_ESDI              5               /* ESDI interface */
        !           236: #define        DTYPE_ST506             6               /* ST506 etc. */
        !           237: #define        DTYPE_HPIB              7               /* CS/80 on HP-IB */
        !           238: #define        DTYPE_HPFL              8               /* HP Fiber-link */
        !           239: #define        DTYPE_FLOPPY            10              /* floppy */
        !           240: #define        DTYPE_CCD               11              /* concatenated disk device */
        !           241: #define        DTYPE_VND               12              /* vnode pseudo-disk */
        !           242: #define        DTYPE_ATAPI             13              /* ATAPI */
        !           243: #define DTYPE_RAID             14              /* RAIDframe */
        !           244:
        !           245: #ifdef DKTYPENAMES
        !           246: static char *dktypenames[] = {
        !           247:        "unknown",
        !           248:        "SMD",
        !           249:        "MSCP",
        !           250:        "old DEC",
        !           251:        "SCSI",
        !           252:        "ESDI",
        !           253:        "ST506",
        !           254:        "HP-IB",
        !           255:        "HP-FL",
        !           256:        "type 9",
        !           257:        "floppy",
        !           258:        "ccd",
        !           259:        "vnd",
        !           260:        "ATAPI",
        !           261:        "RAID",
        !           262:        NULL
        !           263: };
        !           264: #define DKMAXTYPES     (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
        !           265: #endif
        !           266:
        !           267: /*
        !           268:  * Filesystem type and version.
        !           269:  * Used to interpret other filesystem-specific
        !           270:  * per-partition information.
        !           271:  */
        !           272: #define        FS_UNUSED       0               /* unused */
        !           273: #define        FS_SWAP         1               /* swap */
        !           274: #define        FS_V6           2               /* Sixth Edition */
        !           275: #define        FS_V7           3               /* Seventh Edition */
        !           276: #define        FS_SYSV         4               /* System V */
        !           277: #define        FS_V71K         5               /* V7 with 1K blocks (4.1, 2.9) */
        !           278: #define        FS_V8           6               /* Eighth Edition, 4K blocks */
        !           279: #define        FS_BSDFFS       7               /* 4.2BSD fast file system */
        !           280: #define        FS_MSDOS        8               /* MSDOS file system */
        !           281: #define        FS_BSDLFS       9               /* 4.4BSD log-structured file system */
        !           282: #define        FS_OTHER        10              /* in use, but unknown/unsupported */
        !           283: #define        FS_HPFS         11              /* OS/2 high-performance file system */
        !           284: #define        FS_ISO9660      12              /* ISO 9660, normally CD-ROM */
        !           285: #define        FS_BOOT         13              /* partition contains bootstrap */
        !           286: #define        FS_ADOS         14              /* AmigaDOS fast file system */
        !           287: #define        FS_HFS          15              /* Macintosh HFS */
        !           288: #define        FS_ADFS         16              /* Acorn Disk Filing System */
        !           289: #define FS_EXT2FS      17              /* ext2fs */
        !           290: #define FS_CCD         18              /* ccd component */
        !           291: #define FS_RAID                19              /* RAIDframe */
        !           292: #define FS_NTFS                20              /* Windows/NT file system */
        !           293: #define FS_UDF         21              /* UDF (DVD) filesystem */
        !           294:
        !           295: #ifdef DKTYPENAMES
        !           296: static char *fstypenames[] = {
        !           297:        "unused",
        !           298:        "swap",
        !           299:        "Version6",
        !           300:        "Version7",
        !           301:        "SystemV",
        !           302:        "4.1BSD",
        !           303:        "Eighth-Edition",
        !           304:        "4.2BSD",
        !           305:        "MSDOS",
        !           306:        "4.4LFS",
        !           307:        "unknown",
        !           308:        "HPFS",
        !           309:        "ISO9660",
        !           310:        "boot",
        !           311:        "ADOS",
        !           312:        "HFS",
        !           313:        "ADFS",
        !           314:        "ext2fs",
        !           315:        "ccd",
        !           316:        "RAID",
        !           317:        "NTFS",
        !           318:        "UDF",
        !           319:        NULL
        !           320: };
        !           321:
        !           322: /* Similar to the above, but used for things like the mount command. */
        !           323: static char *fstypesnames[] = {
        !           324:        "",             /* 0 */
        !           325:        "",             /* 1 */
        !           326:        "",             /* 2 */
        !           327:        "",             /* 3 */
        !           328:        "",             /* 4 */
        !           329:        "",             /* 5 */
        !           330:        "",             /* 6 */
        !           331:        "ffs",          /* 7 */
        !           332:        "msdos",        /* 8 */
        !           333:        "lfs",          /* 9 */
        !           334:        "",             /* 10 */
        !           335:        "",             /* 11 */
        !           336:        "cd9660",       /* 12 */
        !           337:        "",             /* 13 */
        !           338:        "ados",         /* 14 */
        !           339:        "",             /* 15 */
        !           340:        "",             /* 16 */
        !           341:        "ext2fs",       /* 17 */
        !           342:        "",             /* 18 */
        !           343:        "",             /* 19 */
        !           344:        "ntfs",         /* 20 */
        !           345:        "udf",          /* 21 */
        !           346:        NULL
        !           347: };
        !           348:
        !           349: #define FSMAXTYPES     (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
        !           350: #endif
        !           351:
        !           352: /*
        !           353:  * flags shared by various drives:
        !           354:  */
        !           355: #define                D_BADSECT       0x04            /* supports bad sector forw. */
        !           356: #define                D_VENDOR        0x08            /* vendor disklabel */
        !           357:
        !           358: /*
        !           359:  * Drive data for SMD.
        !           360:  */
        !           361: #define        d_smdflags      d_drivedata[0]
        !           362: #define                D_SSE           0x1             /* supports skip sectoring */
        !           363: #define        d_mindist       d_drivedata[1]
        !           364: #define        d_maxdist       d_drivedata[2]
        !           365: #define        d_sdist         d_drivedata[3]
        !           366:
        !           367: /*
        !           368:  * Drive data for ST506.
        !           369:  */
        !           370: #define d_precompcyl   d_drivedata[0]
        !           371: #define d_gap3         d_drivedata[1]          /* used only when formatting */
        !           372:
        !           373: /*
        !           374:  * Drive data for SCSI.
        !           375:  */
        !           376: #define        d_blind         d_drivedata[0]
        !           377:
        !           378: #ifndef _LOCORE
        !           379: /*
        !           380:  * Structure used to perform a format or other raw operation, returning
        !           381:  * data and/or register values.  Register identification and format
        !           382:  * are device- and driver-dependent.
        !           383:  */
        !           384: struct format_op {
        !           385:        char    *df_buf;
        !           386:        int      df_count;              /* value-result */
        !           387:        daddr64_t df_startblk;
        !           388:        int      df_reg[8];             /* result */
        !           389: };
        !           390:
        !           391: /*
        !           392:  * Structure used internally to retrieve information about a partition
        !           393:  * on a disk.
        !           394:  */
        !           395: struct partinfo {
        !           396:        struct disklabel *disklab;
        !           397:        struct partition *part;
        !           398: };
        !           399:
        !           400: /* DOS partition table -- located at start of some disks. */
        !           401: #define        DOS_LABELSECTOR 1
        !           402: #define        DOSBBSECTOR     0               /* DOS boot block relative sector # */
        !           403: #define        DOSPARTOFF      446
        !           404: #define        DOSDISKOFF      444
        !           405: #define        NDOSPART        4
        !           406: #define        DOSACTIVE       0x80            /* active partition */
        !           407:
        !           408: #define        DOSMBR_SIGNATURE        (0xaa55)
        !           409: #define        DOSMBR_SIGNATURE_OFF    (0x1fe)
        !           410:
        !           411: struct dos_partition {
        !           412:        u_int8_t        dp_flag;        /* bootstrap flags */
        !           413:        u_int8_t        dp_shd;         /* starting head */
        !           414:        u_int8_t        dp_ssect;       /* starting sector */
        !           415:        u_int8_t        dp_scyl;        /* starting cylinder */
        !           416:        u_int8_t        dp_typ;         /* partition type (see below) */
        !           417:        u_int8_t        dp_ehd;         /* end head */
        !           418:        u_int8_t        dp_esect;       /* end sector */
        !           419:        u_int8_t        dp_ecyl;        /* end cylinder */
        !           420:        u_int32_t       dp_start;       /* absolute starting sector number */
        !           421:        u_int32_t       dp_size;        /* partition size in sectors */
        !           422: };
        !           423:
        !           424: /* Isolate the relevant bits to get sector and cylinder. */
        !           425: #define        DPSECT(s)       ((s) & 0x3f)
        !           426: #define        DPCYL(c, s)     ((c) + (((s) & 0xc0) << 2))
        !           427:
        !           428: /* Known DOS partition types. */
        !           429: #define        DOSPTYP_UNUSED  0x00            /* Unused partition */
        !           430: #define        DOSPTYP_FAT12   0x01            /* 12-bit FAT */
        !           431: #define        DOSPTYP_FAT16S  0x04            /* 16-bit FAT, less than 32M */
        !           432: #define        DOSPTYP_EXTEND  0x05            /* Extended; contains sub-partitions */
        !           433: #define        DOSPTYP_FAT16B  0x06            /* 16-bit FAT, more than 32M */
        !           434: #define        DOSPTYP_FAT32   0x0b            /* 32-bit FAT */
        !           435: #define        DOSPTYP_FAT32L  0x0c            /* 32-bit FAT, LBA-mapped */
        !           436: #define        DOSPTYP_FAT16L  0x0e            /* 16-bit FAT, LBA-mapped */
        !           437: #define        DOSPTYP_EXTENDL 0x0f            /* Extended, LBA-mapped; (sub-partitions) */
        !           438: #define        DOSPTYP_ONTRACK 0x54
        !           439: #define        DOSPTYP_LINUX   0x83            /* That other thing */
        !           440: #define        DOSPTYP_FREEBSD 0xa5            /* FreeBSD partition type */
        !           441: #define        DOSPTYP_OPENBSD 0xa6            /* OpenBSD partition type */
        !           442: #define        DOSPTYP_NETBSD  0xa9            /* NetBSD partition type */
        !           443:
        !           444: struct dos_mbr {
        !           445:        u_int8_t                dmbr_boot[DOSPARTOFF];
        !           446:        struct dos_partition    dmbr_parts[NDOSPART];
        !           447:        u_int16_t               dmbr_sign;
        !           448: } __packed;
        !           449:
        !           450: #ifdef _KERNEL
        !           451: void    diskerr(struct buf *, char *, char *, int, int, struct disklabel *);
        !           452: void    disksort(struct buf *, struct buf *);
        !           453: u_int   dkcksum(struct disklabel *);
        !           454: char   *initdisklabel(struct disklabel *);
        !           455: char   *checkdisklabel(void *, struct disklabel *);
        !           456: int     setdisklabel(struct disklabel *, struct disklabel *, u_int);
        !           457: char   *readdisklabel(dev_t, void (*)(struct buf *), struct disklabel *, int);
        !           458: int     writedisklabel(dev_t, void (*)(struct buf *), struct disklabel *);
        !           459: int     bounds_check_with_label(struct buf *, struct disklabel *, int);
        !           460: char   *readdoslabel(struct buf *, void (*)(struct buf *),
        !           461:            struct disklabel *, int *, int);
        !           462: #ifdef CD9660
        !           463: int iso_disklabelspoof(dev_t dev, void (*strat)(struct buf *),
        !           464:        struct disklabel *lp);
        !           465: #endif
        !           466: #ifdef UDF
        !           467: int udf_disklabelspoof(dev_t dev, void (*strat)(struct buf *),
        !           468:        struct disklabel *lp);
        !           469: #endif
        !           470: #endif
        !           471: #endif /* _LOCORE */
        !           472:
        !           473: #if !defined(_KERNEL) && !defined(_LOCORE)
        !           474:
        !           475: #include <sys/cdefs.h>
        !           476:
        !           477: __BEGIN_DECLS
        !           478: struct disklabel *getdiskbyname(const char *);
        !           479: __END_DECLS
        !           480:
        !           481: #endif

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