/*
 * Copyright (c) 2003-2007 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 *
 * 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.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``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
 * COPYRIGHT HOLDERS OR CONTRIBUTORS 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.
 *
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <phk@FreeBSD.ORG> wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
 * ----------------------------------------------------------------------------
 *
 * Copyright (c) 1982, 1986, 1988, 1993
 *      The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Copyright (c) 1994 Bruce D. Evans.
 * All rights reserved.
 *
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 *      @(#)ufs_disksubr.c      8.5 (Berkeley) 1/21/94
 * $FreeBSD: src/sys/kern/subr_disk.c,v 1.20.2.6 2001/10/05 07:14:57 peter Exp $
 * $FreeBSD: src/sys/ufs/ufs/ufs_disksubr.c,v 1.44.2.3 2001/03/05 05:42:19 obrien Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/disklabel.h>
#include <sys/disklabel32.h>
#include <sys/diskslice.h>
#include <sys/disk.h>
#include <sys/dtype.h>          /* DTYPE_* constants */
#include <machine/md_var.h>
#include <sys/ctype.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/msgport.h>
#include <sys/msgport2.h>
#include <sys/buf2.h>

#include <vfs/ufs/dinode.h>     /* XXX used only for fs.h */
#include <vfs/ufs/fs.h>         /* XXX used only to get BBSIZE/SBSIZE */

static void partition_info(const char *sname, int part, struct partition32 *pp);
static void slice_info(const char *sname, struct diskslice *sp);
static const char *l32_fixlabel(const char *sname, struct diskslice *sp,
                                disklabel_t lpx, int writeflag);

/*
 * Retrieve the partition start and extent, in blocks.  Return 0 on success,
 * EINVAL on error.
 */
static int
l32_getpartbounds(struct diskslices *ssp, disklabel_t lp, u_int32_t part,
                  u_int64_t *start, u_int64_t *blocks)
{
        struct partition32 *pp;

        if (part >= lp.lab32->d_npartitions)
                return (EINVAL);
        pp = &lp.lab32->d_partitions[part];
        *start = pp->p_offset;
        *blocks = pp->p_size;
        return(0);
}

static void
l32_loadpartinfo(disklabel_t lp, u_int32_t part, struct partinfo *dpart)
{
        struct partition32 *pp;
        const size_t uuid_size = sizeof(struct uuid);

        bzero(&dpart->fstype_uuid, uuid_size);
        bzero(&dpart->storage_uuid, uuid_size);
        if (part < lp.lab32->d_npartitions) {
                pp = &lp.lab32->d_partitions[part];
                dpart->fstype = pp->p_fstype;
        } else {
                dpart->fstype = 0;
        }
}

static u_int32_t
l32_getnumparts(disklabel_t lp)
{
        return(lp.lab32->d_npartitions);
}

static int
l32_getpackname(disklabel_t lp, char *buf, size_t bytes)
{
        size_t slen;

        if (lp.lab32->d_packname[0] == 0) {
                buf[0] = 0;
                return -1;
        }
        slen = strnlen(lp.lab32->d_packname, sizeof(lp.lab32->d_packname));
        if (slen >= bytes)
                slen = bytes - 1;
        bcopy(lp.lab32->d_packname, buf, slen);
        buf[slen] = 0;

        return 0;
}

static void
l32_freedisklabel(disklabel_t *lpp)
{
        kfree((*lpp).lab32, M_DEVBUF);
        (*lpp).lab32 = NULL;
}

/*
 * Attempt to read a disk label from a device.
 *
 * Returns NULL on sucess, and an error string on failure
 */
static const char *
l32_readdisklabel(cdev_t dev, struct diskslice *sp, disklabel_t *lpp,
                struct disk_info *info)
{
        disklabel_t lpx;
        struct buf *bp;
        struct disklabel32 *dlp;
        const char *msg = NULL;
        int secsize = info->d_media_blksize;

        bp = getpbuf_mem(NULL);
        KKASSERT(secsize <= bp->b_bufsize);
        bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * secsize;
        bp->b_bio1.bio_done = biodone_sync;
        bp->b_bio1.bio_flags |= BIO_SYNC;
        bp->b_bcount = secsize;
        bp->b_flags &= ~B_INVAL;
        bp->b_cmd = BUF_CMD_READ;
        bp->b_flags |= B_FAILONDIS;
        dev_dstrategy(dev, &bp->b_bio1);
        if (biowait(&bp->b_bio1, "labrd")) {
                msg = "I/O error";
        } else {
                for (dlp = (struct disklabel32 *)bp->b_data;
                     dlp <= (struct disklabel32 *)
                         ((char *)bp->b_data + secsize - sizeof(*dlp));
                     dlp = (struct disklabel32 *)((char *)dlp + sizeof(long)))
                {
                        if (dlp->d_magic != DISKMAGIC32 ||
                            dlp->d_magic2 != DISKMAGIC32) {
                                /*
                                 * NOTE! dsreadandsetlabel() does a strcmp() on
                                 * this string.
                                 */
                                if (msg == NULL)
                                        msg = "no disk label";
                        } else if (dlp->d_npartitions > MAXPARTITIONS32 ||
                                   dkcksum32(dlp) != 0) {
                                msg = "disk label corrupted";
                        } else {
                                lpx.lab32 = dlp;
                                msg = l32_fixlabel(NULL, sp, lpx, FALSE);
                                if (msg == NULL) {
                                        (*lpp).lab32 = kmalloc(sizeof(*dlp),
                                            M_DEVBUF, M_WAITOK | M_ZERO);
                                        *(*lpp).lab32 = *dlp;
                                }
                                break;
                        }
                }
        }
        bp->b_flags |= B_INVAL | B_AGE;
        relpbuf(bp, NULL);

        return (msg);
}

/*
 * Check new disk label for sensibility before setting it.
 */
static int
l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp,
                 struct diskslice *sp, u_int32_t *openmask)
{
        struct disklabel32 *olp, *nlp;
        struct partition32 *opp, *npp;
        int part;
        int i;

        olp = olpx.lab32;
        nlp = nlpx.lab32;

        /*
         * Check it is actually a disklabel we are looking at.
         */
        if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 ||
            dkcksum32(nlp) != 0)
                return (EINVAL);

        /*
         * For each partition that we think is open, check the new disklabel
         * for compatibility.  Ignore special partitions (>= 128).
         */
        i = 0;
        while (i < 128) {
                if (openmask[i >> 5] == 0) {
                        i += 32;
                        continue;
                }
                if ((openmask[i >> 5] & (1 << (i & 31))) == 0) {
                        ++i;
                        continue;
                }
                if (nlp->d_npartitions <= i)
                        return (EBUSY);
                opp = &olp->d_partitions[i];
                npp = &nlp->d_partitions[i];
                if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size)
                        return (EBUSY);
                /*
                 * Copy internally-set partition information
                 * if new label doesn't include it.             XXX
                 * (If we are using it then we had better stay the same type)
                 * This is possibly dubious, as someone else noted (XXX)
                 */
                if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) {
                        npp->p_fstype = opp->p_fstype;
                        npp->p_fsize = opp->p_fsize;
                        npp->p_frag = opp->p_frag;
                        npp->p_cpg = opp->p_cpg;
                }
                ++i;
        }
        nlp->d_checksum = 0;
        nlp->d_checksum = dkcksum32(nlp);
        *olp = *nlp;

        if (olp->d_partitions[RAW_PART].p_offset)
                return (EXDEV);
        if (olp->d_secperunit > sp->ds_size)
                return (ENOSPC);
        for (part = 0; part < olp->d_npartitions; ++part) {
                if (olp->d_partitions[part].p_size > sp->ds_size)
                        return(ENOSPC);
        }
        return (0);
}

/*
 * Write disk label back to device after modification.
 */
static int
l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp,
                   disklabel_t lpx)
{
        struct disklabel32 *lp;
        struct disklabel32 *dlp;
        struct buf *bp;
        const char *msg;
        int error = 0;

        lp = lpx.lab32;

        if (lp->d_partitions[RAW_PART].p_offset != 0)
                return (EXDEV);                 /* not quite right */

        bp = getpbuf_mem(NULL);
        KKASSERT((int)lp->d_secsize <= bp->b_bufsize);
        bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize;
        bp->b_bio1.bio_done = biodone_sync;
        bp->b_bio1.bio_flags |= BIO_SYNC;
        bp->b_bcount = lp->d_secsize;
        bp->b_flags |= B_FAILONDIS;

#if 1
        /*
         * We read the label first to see if it's there,
         * in which case we will put ours at the same offset into the block..
         * (I think this is stupid [Julian])
         * Note that you can't write a label out over a corrupted label!
         * (also stupid.. how do you write the first one? by raw writes?)
         */
        bp->b_flags &= ~B_INVAL;
        bp->b_cmd = BUF_CMD_READ;
        KKASSERT(dkpart(dev) == WHOLE_SLICE_PART);
        dev_dstrategy(dev, &bp->b_bio1);
        error = biowait(&bp->b_bio1, "labrd");
        if (error)
                goto done;
        for (dlp = (struct disklabel32 *)bp->b_data;
             dlp <= (struct disklabel32 *)
                 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp));
             dlp = (struct disklabel32 *)((char *)dlp + sizeof(long)))
        {
                if (dlp->d_magic == DISKMAGIC32 &&
                    dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) {
                        *dlp = *lp;
                        lpx.lab32 = dlp;
                        msg = l32_fixlabel(NULL, sp, lpx, TRUE);
                        if (msg) {
                                error = EINVAL;
                        } else {
                                bp->b_cmd = BUF_CMD_WRITE;
                                bp->b_bio1.bio_done = biodone_sync;
                                bp->b_bio1.bio_flags |= BIO_SYNC;
                                KKASSERT(dkpart(dev) == WHOLE_SLICE_PART);
                                dev_dstrategy(dev, &bp->b_bio1);
                                error = biowait(&bp->b_bio1, "labwr");
                        }
                        goto done;
                }
        }
        error = ESRCH;
done:
#else
        bzero(bp->b_data, lp->d_secsize);
        dlp = (struct disklabel32 *)bp->b_data;
        *dlp = *lp;
        bp->b_flags &= ~B_INVAL;
        bp->b_cmd = BUF_CMD_WRITE;
        bp->b_bio1.bio_done = biodone_sync;
        bp->b_bio1.bio_flags |= BIO_SYNC;
        BUF_STRATEGY(bp, 1);
        error = biowait(&bp->b_bio1, "labwr");
#endif
        bp->b_flags |= B_INVAL | B_AGE;
        relpbuf(bp, NULL);

        return (error);
}

/*
 * Create a disklabel based on a disk_info structure, initializing
 * the appropriate fields and creating a raw partition that covers the
 * whole disk.
 *
 * If a diskslice is passed, the label is truncated to the slice
 */
static disklabel_t
l32_clone_label(struct disk_info *info, struct diskslice *sp)
{
        struct disklabel32 *lp;
        disklabel_t res;

        lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO);
        lp->d_nsectors = info->d_secpertrack;
        lp->d_ntracks = info->d_nheads;
        lp->d_secpercyl = info->d_secpercyl;
        lp->d_secsize = info->d_media_blksize;

        if (sp)
                lp->d_secperunit = (u_int)sp->ds_size;
        else
                lp->d_secperunit = (u_int)info->d_media_blocks;

        if (lp->d_typename[0] == '\0')
                strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename));
        if (lp->d_packname[0] == '\0')
                strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname));
        if (lp->d_nsectors == 0)
                lp->d_nsectors = 32;
        if (lp->d_ntracks == 0)
                lp->d_ntracks = 64;
        lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
        lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl;
        if (lp->d_rpm == 0)
                lp->d_rpm = 3600;
        if (lp->d_interleave == 0)
                lp->d_interleave = 1;
        if (lp->d_npartitions < RAW_PART + 1)
                lp->d_npartitions = MAXPARTITIONS32;
        if (lp->d_bbsize == 0)
                lp->d_bbsize = BBSIZE;
        if (lp->d_sbsize == 0)
                lp->d_sbsize = SBSIZE;

        /*
         * Used by various devices to create a compatibility slice which
         * allows us to mount root from devices which do not have a
         * disklabel.  Particularly: CDs.
         */
        lp->d_partitions[RAW_PART].p_size = lp->d_secperunit;
        if (info->d_dsflags & DSO_COMPATPARTA) {
                lp->d_partitions[0].p_size = lp->d_secperunit;
                lp->d_partitions[0].p_fstype = FS_OTHER;
        }
        lp->d_magic = DISKMAGIC32;
        lp->d_magic2 = DISKMAGIC32;
        lp->d_checksum = dkcksum32(lp);
        res.lab32 = lp;
        return (res);
}

static void
l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp,
                    struct diskslice *sp, struct disk_info *info)
{
        struct disklabel32 *lp = lpx.lab32;
        struct partition32 *pp;
        disklabel_t template;

        template = l32_clone_label(info, NULL);
        bcopy(template.opaque, lp, sizeof(struct disklabel32));

        lp->d_magic = DISKMAGIC32;
        lp->d_magic2 = DISKMAGIC32;

        lp->d_npartitions = MAXPARTITIONS32;
        if (lp->d_interleave == 0)
                lp->d_interleave = 1;
        if (lp->d_rpm == 0)
                lp->d_rpm = 3600;
        if (lp->d_nsectors == 0)        /* sectors per track */
                lp->d_nsectors = 32;
        if (lp->d_ntracks == 0)         /* heads */
                lp->d_ntracks = 64;
        lp->d_ncylinders = 0;
        lp->d_bbsize = BBSIZE;
        lp->d_sbsize = SBSIZE;

        /*
         * If the slice or GPT partition is really small we could
         * wind up with an absurd calculation for ncylinders.
         */
        while (lp->d_ncylinders < 4) {
                if (lp->d_ntracks > 1)
                        lp->d_ntracks >>= 1;
                else if (lp->d_nsectors > 1)
                        lp->d_nsectors >>= 1;
                else
                        break;
                lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
                lp->d_ncylinders = sp->ds_size / lp->d_secpercyl;
        }

        /*
         * Set or Modify the partition sizes to accomodate the slice,
         * since we started with a copy of the virgin label stored
         * in the whole-disk-slice and we are probably not a
         * whole-disk slice.
         */
        lp->d_secperunit = sp->ds_size;
        pp = &lp->d_partitions[RAW_PART];
        pp->p_offset = 0;
        pp->p_size = lp->d_secperunit;
        if (info->d_dsflags & DSO_COMPATPARTA) {
                pp = &lp->d_partitions[0];
                pp->p_offset = 0;
                pp->p_size = lp->d_secperunit;
                pp->p_fstype = FS_OTHER;
        }
        lp->d_checksum = 0;
        lp->d_checksum = dkcksum32(lp);

        kfree(template.opaque, M_DEVBUF);
}

static const char *
l32_fixlabel(const char *sname, struct diskslice *sp,
             disklabel_t lpx, int writeflag)
{
        struct disklabel32 *lp;
        struct partition32 *pp;
        u_int64_t start;
        u_int64_t end;
        u_int64_t offset;
        int part;
        int warned;

        lp = lpx.lab32;

        /* These errors "can't happen" so don't bother reporting details. */
        if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32)
                return ("fixlabel: invalid magic");
        if (dkcksum32(lp) != 0)
                return ("fixlabel: invalid checksum");

        pp = &lp->d_partitions[RAW_PART];

        /*
         * What a mess.  For ages old backwards compatibility the disklabel
         * on-disk stores absolute offsets instead of slice-relative offsets.
         * So fix it up when reading, writing, or snooping.
         *
         * The in-core label is always slice-relative.
         */
        if (writeflag) {
                start = 0;
                offset = sp->ds_offset;
        } else {
                start = sp->ds_offset;
                offset = -sp->ds_offset;
        }
        if (pp->p_offset != start) {
                if (sname != NULL) {
                        kprintf("%s: rejecting BSD label: "
                                "raw partition offset != slice offset\n",
                                sname);
                        slice_info(sname, sp);
                        partition_info(sname, RAW_PART, pp);
                }
                return ("fixlabel: raw partition offset != slice offset");
        }
        if (pp->p_size != sp->ds_size) {
                if (sname != NULL) {
                        kprintf("%s: raw partition size != slice size\n", sname);
                        slice_info(sname, sp);
                        partition_info(sname, RAW_PART, pp);
                }
                if (pp->p_size > sp->ds_size) {
                        if (sname == NULL)
                                return ("fixlabel: raw partition size > slice size");
                        kprintf("%s: truncating raw partition\n", sname);
                        pp->p_size = sp->ds_size;
                }
        }
        end = start + sp->ds_size;
        if (start > end)
                return ("fixlabel: slice wraps");
        if (lp->d_secpercyl <= 0)
                return ("fixlabel: d_secpercyl <= 0");
        pp -= RAW_PART;
        warned = FALSE;
        for (part = 0; part < lp->d_npartitions; part++, pp++) {
                if (pp->p_offset != 0 || pp->p_size != 0) {
                        if (pp->p_offset < start
                            || pp->p_offset + pp->p_size > end
                            || pp->p_offset + pp->p_size < pp->p_offset) {
                                if (sname != NULL) {
                                        kprintf("%s: rejecting partition in "
                                                "BSD label: it isn't entirely "
                                                "within the slice\n",
                                                sname);
                                        if (!warned) {
                                                slice_info(sname, sp);
                                                warned = TRUE;
                                        }
                                        partition_info(sname, part, pp);
                                }
                                /* XXX else silently discard junk. */
                                bzero(pp, sizeof *pp);
                        } else {
                                pp->p_offset += offset;
                        }
                }
        }
        lp->d_ncylinders = sp->ds_size / lp->d_secpercyl;
        lp->d_secperunit = sp->ds_size;
        lp->d_checksum = 0;
        lp->d_checksum = dkcksum32(lp);
        return (NULL);
}

/*
 * Set the number of blocks at the beginning of the slice which have
 * been reserved for label operations.  This area will be write-protected
 * when accessed via the slice.
 */
static void
l32_adjust_label_reserved(struct diskslices *ssp, int slice,
                          struct diskslice *sp)
{
        /*struct disklabel32 *lp = sp->ds_label.lab32;*/
        sp->ds_reserved = SBSIZE / ssp->dss_secsize;
}

static void
partition_info(const char *sname, int part, struct partition32 *pp)
{
        kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part,
                (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1),
                (u_long)pp->p_size);
}

static void
slice_info(const char *sname, struct diskslice *sp)
{
        kprintf("%s: start %llu, end %llu, size %llu\n", sname,
               (long long)sp->ds_offset,
               (long long)sp->ds_offset + sp->ds_size - 1,
               (long long)sp->ds_size);
}

struct disklabel_ops disklabel32_ops = {
        .labelsize = sizeof(struct disklabel32),
        .op_readdisklabel = l32_readdisklabel,
        .op_setdisklabel = l32_setdisklabel,
        .op_writedisklabel = l32_writedisklabel,
        .op_clone_label = l32_clone_label,
        .op_adjust_label_reserved = l32_adjust_label_reserved,
        .op_getpartbounds = l32_getpartbounds,
        .op_loadpartinfo = l32_loadpartinfo,
        .op_getnumparts = l32_getnumparts,
        .op_makevirginlabel = l32_makevirginlabel,
        .op_getpackname = l32_getpackname,
        .op_freedisklabel = l32_freedisklabel
};