diff options
| -rw-r--r-- | sys/kern/subr_disklabel.c | 301 | ||||
| -rw-r--r-- | sys/kern/subr_diskmbr.c | 529 | ||||
| -rw-r--r-- | sys/kern/subr_diskslice.c | 940 | ||||
| -rw-r--r-- | sys/pc98/pc98/diskslice_machdep.c | 404 |
4 files changed, 0 insertions, 2174 deletions
diff --git a/sys/kern/subr_disklabel.c b/sys/kern/subr_disklabel.c deleted file mode 100644 index 32c0a5f..0000000 --- a/sys/kern/subr_disklabel.c +++ /dev/null @@ -1,301 +0,0 @@ -#ifdef NO_GEOM -/* - * 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. - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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 - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/stdint.h> -#include <sys/bio.h> -#include <sys/buf.h> -#include <sys/conf.h> -#include <sys/kernel.h> -#include <sys/disk.h> -#include <sys/disklabel.h> -#include <sys/syslog.h> - -dev_t -dkmodpart(dev_t dev, int part) -{ - return (makedev(major(dev), (minor(dev) & ~7) | part)); -} - -/* - * Attempt to read a disk label from a device using the indicated strategy - * routine. The label must be partly set up before this: secpercyl, secsize - * and anything required in the strategy routine (e.g., dummy bounds for the - * partition containing the label) must be filled in before calling us. - * Returns NULL on success and an error string on failure. - */ -char * -readdisklabel(dev, lp) - dev_t dev; - register struct disklabel *lp; -{ - register struct buf *bp; - struct disklabel *dlp; - char *msg = NULL; - - bp = geteblk((int)lp->d_secsize); - bp->b_dev = dev; - bp->b_blkno = LABELSECTOR * ((int)lp->d_secsize/DEV_BSIZE); - bp->b_bcount = lp->d_secsize; - bp->b_flags &= ~B_INVAL; - bp->b_iocmd = BIO_READ; - DEV_STRATEGY(bp); - if (bufwait(bp)) - msg = "I/O error"; - else if (bp->b_resid != 0) - msg = "disk too small for a label"; - else for (dlp = (struct disklabel *)bp->b_data; - dlp <= (struct disklabel *)((char *)bp->b_data + - lp->d_secsize - sizeof(*dlp)); - dlp = (struct disklabel *)((char *)dlp + sizeof(long))) { - if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) { - if (msg == NULL) - msg = "no disk label"; - } else if (dlp->d_npartitions > MAXPARTITIONS || - dkcksum(dlp) != 0) - msg = "disk label corrupted"; - else { - *lp = *dlp; - msg = NULL; - break; - } - } - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - return (msg); -} - -/* - * Check new disk label for sensibility before setting it. - */ -int -setdisklabel(olp, nlp, openmask) - register struct disklabel *olp, *nlp; - u_long openmask; -{ - register int i; - register struct partition *opp, *npp; - - /* - * Check it is actually a disklabel we are looking at. - */ - if (nlp->d_magic != DISKMAGIC || nlp->d_magic2 != DISKMAGIC || - dkcksum(nlp) != 0) - return (EINVAL); - /* - * For each partition that we think is open, - */ - while ((i = ffs((long)openmask)) != 0) { - i--; - /* - * Check it is not changing.... - */ - openmask &= ~(1 << i); - 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; - } - } - nlp->d_checksum = 0; - nlp->d_checksum = dkcksum(nlp); - *olp = *nlp; - return (0); -} - -/* - * Write disk label back to device after modification. - */ -int -writedisklabel(dev, lp) - dev_t dev; - register struct disklabel *lp; -{ - struct buf *bp; - struct disklabel *dlp; - int error = 0; - - if (lp->d_partitions[RAW_PART].p_offset != 0) - return (EXDEV); /* not quite right */ - bp = geteblk((int)lp->d_secsize); - bp->b_dev = dkmodpart(dev, RAW_PART); - bp->b_blkno = LABELSECTOR * ((int)lp->d_secsize/DEV_BSIZE); - bp->b_bcount = lp->d_secsize; -#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_iocmd = BIO_READ; - DEV_STRATEGY(bp); - error = bufwait(bp); - if (error) - goto done; - if (bp->b_resid != 0) { - error = ENOSPC; - goto done; - } - for (dlp = (struct disklabel *)bp->b_data; - dlp <= (struct disklabel *) - ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); - dlp = (struct disklabel *)((char *)dlp + sizeof(long))) { - if (dlp->d_magic == DISKMAGIC && dlp->d_magic2 == DISKMAGIC && - dkcksum(dlp) == 0) { - *dlp = *lp; - bp->b_flags &= ~B_DONE; - bp->b_iocmd = BIO_WRITE; -#ifdef __alpha__ - alpha_fix_srm_checksum(bp); -#endif - DEV_STRATEGY(bp); - error = bufwait(bp); - goto done; - } - } - error = ESRCH; -done: -#else - bzero(bp->b_data, lp->d_secsize); - dlp = (struct disklabel *)bp->b_data; - *dlp = *lp; - bp->b_flags &= ~B_INVAL; - bp->b_iocmd = BIO_WRITE; - DEV_STRATEGY(bp); - error = bufwait(bp); -#endif - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - return (error); -} - -/* - * Determine the size of the transfer, and make sure it is - * within the boundaries of the partition. Adjust transfer - * if needed, and signal errors or early completion. - */ -int -bounds_check_with_label(struct bio *bp, struct disklabel *lp, int wlabel) -{ - struct partition *p = lp->d_partitions + dkpart(bp->bio_dev); - int labelsect = lp->d_partitions[0].p_offset; - int maxsz = p->p_size, - sz = (bp->bio_bcount + DEV_BSIZE - 1) >> DEV_BSHIFT; - - /* overwriting disk label ? */ - /* XXX should also protect bootstrap in first 8K */ - if (bp->bio_blkno + p->p_offset <= LABELSECTOR + labelsect && -#if LABELSECTOR != 0 - bp->bio_blkno + p->p_offset + sz > LABELSECTOR + labelsect && -#endif - (bp->bio_cmd == BIO_WRITE) && wlabel == 0) { - bp->bio_error = EROFS; - goto bad; - } - -#if defined(DOSBBSECTOR) && defined(notyet) - /* overwriting master boot record? */ - if (bp->bio_blkno + p->p_offset <= DOSBBSECTOR && - (bp->bio_cmd == BIO_WRITE) && wlabel == 0) { - bp->bio_error = EROFS; - goto bad; - } -#endif - - /* beyond partition? */ - if (bp->bio_blkno < 0 || bp->bio_blkno + sz > maxsz) { - /* if exactly at end of disk, return an EOF */ - if (bp->bio_blkno == maxsz) { - bp->bio_resid = bp->bio_bcount; - return(0); - } - /* or truncate if part of it fits */ - sz = maxsz - bp->bio_blkno; - if (sz <= 0) { - bp->bio_error = EINVAL; - goto bad; - } - bp->bio_bcount = sz << DEV_BSHIFT; - } - - bp->bio_pblkno = bp->bio_blkno + p->p_offset; - return(1); - -bad: - bp->bio_flags |= BIO_ERROR; - return(-1); -} - -#ifdef __alpha__ -void -alpha_fix_srm_checksum(bp) - struct buf *bp; -{ - u_int64_t *p; - u_int64_t sum; - int i; - - p = (u_int64_t *) bp->b_data; - sum = 0; - for (i = 0; i < 63; i++) - sum += p[i]; - p[63] = sum; -} -#endif -#endif diff --git a/sys/kern/subr_diskmbr.c b/sys/kern/subr_diskmbr.c deleted file mode 100644 index b457f44..0000000 --- a/sys/kern/subr_diskmbr.c +++ /dev/null @@ -1,529 +0,0 @@ -#ifdef NO_GEOM -/*- - * Copyright (c) 1994 Bruce D. Evans. - * All rights reserved. - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - * - * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 - * from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $ - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bio.h> -#include <sys/buf.h> -#include <sys/conf.h> -#ifdef PC98 -#define PC98_ATCOMPAT -#define dsinit atcompat_dsinit -#endif -#include <sys/disk.h> -#include <sys/disklabel.h> -#include <sys/diskmbr.h> -#define DOSPTYP_EXTENDED 5 -#define DOSPTYP_EXTENDEDX 15 -#define DOSPTYP_ONTRACK 84 -#include <sys/diskslice.h> -#include <sys/malloc.h> -#include <sys/syslog.h> - -#define TRACE(str) do { if (dsi_debug) printf str; } while (0) - -static volatile u_char dsi_debug; - -/* - * This is what we have embedded in every boot1 for supporting the bogus - * "Dangerously Dedicated" mode. However, the old table is broken because - * it has an illegal geometry in it - it specifies 256 heads (heads = end - * head + 1) which causes nasty stuff when that wraps to zero in bios code. - * eg: divide by zero etc. This caused the dead-thinkpad problem, numerous - * SCSI bios crashes, EFI to crash, etc. - * - * We still have to recognize the old table though, even though we stopped - * inflicting it apon the world. - */ -static struct dos_partition historical_bogus_partition_table[NDOSPART] = { - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0x80, 0, 1, 0, DOSPTYP_386BSD, 255, 255, 255, 0, 50000, }, -}; -static struct dos_partition historical_bogus_partition_table_fixed[NDOSPART] = { - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0x80, 0, 1, 0, DOSPTYP_386BSD, 254, 255, 255, 0, 50000, }, -}; - -static int check_part(char *sname, struct dos_partition *dp, - u_long offset, int nsectors, int ntracks, - u_long mbr_offset); -static void mbr_extended(dev_t dev, struct disklabel *lp, - struct diskslices *ssp, u_long ext_offset, - u_long ext_size, u_long base_ext_offset, - int nsectors, int ntracks, u_long mbr_offset, - int level); -static int mbr_setslice(char *sname, struct disklabel *lp, - struct diskslice *sp, struct dos_partition *dp, - u_long br_offset); - -static int -check_part(sname, dp, offset, nsectors, ntracks, mbr_offset ) - char *sname; - struct dos_partition *dp; - u_long offset; - int nsectors; - int ntracks; - u_long mbr_offset; -{ - int chs_ecyl; - int chs_esect; - int chs_scyl; - int chs_ssect; - int error; - u_long esector; - u_long esector1; - u_long secpercyl; - u_long ssector; - u_long ssector1; - - secpercyl = (u_long)nsectors * ntracks; - chs_scyl = DPCYL(dp->dp_scyl, dp->dp_ssect); - chs_ssect = DPSECT(dp->dp_ssect); - ssector = chs_ssect - 1 + dp->dp_shd * nsectors + chs_scyl * secpercyl - + mbr_offset; - ssector1 = offset + dp->dp_start; - - /* - * If ssector1 is on a cylinder >= 1024, then ssector can't be right. - * Allow the C/H/S for it to be 1023/ntracks-1/nsectors, or correct - * apart from the cylinder being reduced modulo 1024. Always allow - * 1023/255/63, because this is the official way to represent - * pure-LBA for the starting position. - */ - if ((ssector < ssector1 - && ((chs_ssect == nsectors && dp->dp_shd == ntracks - 1 - && chs_scyl == 1023) - || (secpercyl != 0 - && (ssector1 - ssector) % (1024 * secpercyl) == 0))) - || (dp->dp_scyl == 255 && dp->dp_shd == 255 - && dp->dp_ssect == 255)) { - TRACE(("%s: C/H/S start %d/%d/%d, start %lu: allow\n", - sname, chs_scyl, dp->dp_shd, chs_ssect, ssector1)); - ssector = ssector1; - } - - chs_ecyl = DPCYL(dp->dp_ecyl, dp->dp_esect); - chs_esect = DPSECT(dp->dp_esect); - esector = chs_esect - 1 + dp->dp_ehd * nsectors + chs_ecyl * secpercyl - + mbr_offset; - esector1 = ssector1 + dp->dp_size - 1; - - /* - * Allow certain bogus C/H/S values for esector, as above. However, - * heads == 255 isn't really legal and causes some BIOS crashes. The - * correct value to indicate a pure-LBA end is 1023/heads-1/sectors - - * usually 1023/254/63. "heads" is base 0, "sectors" is base 1. - */ - if ((esector < esector1 - && ((chs_esect == nsectors && dp->dp_ehd == ntracks - 1 - && chs_ecyl == 1023) - || (secpercyl != 0 - && (esector1 - esector) % (1024 * secpercyl) == 0))) - || (dp->dp_ecyl == 255 && dp->dp_ehd == 255 - && dp->dp_esect == 255)) { - TRACE(("%s: C/H/S end %d/%d/%d, end %lu: allow\n", - sname, chs_ecyl, dp->dp_ehd, chs_esect, esector1)); - esector = esector1; - } - - error = (ssector == ssector1 && esector == esector1) ? 0 : EINVAL; - if (bootverbose) - printf("%s: type 0x%x, start %lu, end = %lu, size %lu %s\n", - sname, dp->dp_typ, ssector1, esector1, - (u_long)dp->dp_size, error ? "" : ": OK"); - if (ssector != ssector1 && bootverbose) - printf("%s: C/H/S start %d/%d/%d (%lu) != start %lu: invalid\n", - sname, chs_scyl, dp->dp_shd, chs_ssect, - ssector, ssector1); - if (esector != esector1 && bootverbose) - printf("%s: C/H/S end %d/%d/%d (%lu) != end %lu: invalid\n", - sname, chs_ecyl, dp->dp_ehd, chs_esect, - esector, esector1); - return (error); -} - -int -dsinit(dev, lp, sspp) - dev_t dev; - struct disklabel *lp; - struct diskslices **sspp; -{ - struct buf *bp; - u_char *cp; - int dospart; - struct dos_partition *dp; - struct dos_partition *dp0; - struct dos_partition dpcopy[NDOSPART]; - int error; - int max_ncyls; - int max_nsectors; - int max_ntracks; - u_long mbr_offset; - char partname[2]; - u_long secpercyl; - char *sname; - struct diskslice *sp; - struct diskslices *ssp; - - mbr_offset = DOSBBSECTOR; -reread_mbr: - /* Read master boot record. */ - bp = geteblk((int)lp->d_secsize); - bp->b_dev = dkmodpart(dkmodslice(dev, WHOLE_DISK_SLICE), RAW_PART); - bp->b_blkno = mbr_offset; - bp->b_bcount = lp->d_secsize; - bp->b_iocmd = BIO_READ; - DEV_STRATEGY(bp); - if (bufwait(bp) != 0) { - disk_err(&bp->b_io, "reading primary partition table: error", - 0, 1); - error = EIO; - goto done; - } - - /* Weakly verify it. */ - cp = bp->b_data; - sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE, RAW_PART, partname); - if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) { - if (bootverbose) - printf("%s: invalid primary partition table: no magic\n", - sname); - error = EINVAL; - goto done; - } - - /* Make a copy of the partition table to avoid alignment problems. */ - memcpy(&dpcopy[0], cp + DOSPARTOFF, sizeof(dpcopy)); - - dp0 = &dpcopy[0]; - - /* Check for "Ontrack Diskmanager". */ - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) { - if (dp->dp_typ == DOSPTYP_ONTRACK) { - if (bootverbose) - printf( - "%s: Found \"Ontrack Disk Manager\" on this disk.\n", sname); - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - mbr_offset = 63; - goto reread_mbr; - } - } - - if (bcmp(dp0, historical_bogus_partition_table, - sizeof historical_bogus_partition_table) == 0 || - bcmp(dp0, historical_bogus_partition_table_fixed, - sizeof historical_bogus_partition_table_fixed) == 0) { - if (bootverbose) - printf( - "%s: invalid primary partition table: Dangerously Dedicated (ignored)\n", - sname); - error = EINVAL; - goto done; - } - - /* Guess the geometry. */ - /* - * TODO: - * Perhaps skip entries with 0 size. - * Perhaps only look at entries of type DOSPTYP_386BSD. - */ - max_ncyls = 0; - max_nsectors = 0; - max_ntracks = 0; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) { - int ncyls; - int nsectors; - int ntracks; - - ncyls = DPCYL(dp->dp_ecyl, dp->dp_esect) + 1; - if (max_ncyls < ncyls) - max_ncyls = ncyls; - nsectors = DPSECT(dp->dp_esect); - if (max_nsectors < nsectors) - max_nsectors = nsectors; - ntracks = dp->dp_ehd + 1; - if (max_ntracks < ntracks) - max_ntracks = ntracks; - } - - /* - * Check that we have guessed the geometry right by checking the - * partition entries. - */ - /* - * TODO: - * As above. - * Check for overlaps. - * Check against d_secperunit if the latter is reliable. - */ - error = 0; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) { - if (dp->dp_scyl == 0 && dp->dp_shd == 0 && dp->dp_ssect == 0 - && dp->dp_start == 0 && dp->dp_size == 0) - continue; - sname = dsname(dev, dkunit(dev), BASE_SLICE + dospart, - RAW_PART, partname); - - /* - * Temporarily ignore errors from this check. We could - * simplify things by accepting the table eariler if we - * always ignore errors here. Perhaps we should always - * accept the table if the magic is right but not let - * bad entries affect the geometry. - */ - check_part(sname, dp, mbr_offset, max_nsectors, max_ntracks, - mbr_offset); - } - if (error != 0) - goto done; - - /* - * Accept the DOS partition table. - * First adjust the label (we have been careful not to change it - * before we can guarantee success). - */ - secpercyl = (u_long)max_nsectors * max_ntracks; - if (secpercyl != 0) { - lp->d_nsectors = max_nsectors; - lp->d_ntracks = max_ntracks; - lp->d_secpercyl = secpercyl; - lp->d_ncylinders = lp->d_secperunit / secpercyl; - } - - /* - * We are passed a pointer to a suitably initialized minimal - * slices "struct" with no dangling pointers in it. Replace it - * by a maximal one. This usually oversizes the "struct", but - * enlarging it while searching for logical drives would be - * inconvenient. - */ - free(*sspp, M_DEVBUF); - ssp = dsmakeslicestruct(MAX_SLICES, lp); - *sspp = ssp; - - /* Initialize normal slices. */ - sp = &ssp->dss_slices[BASE_SLICE]; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++, sp++) { - sname = dsname(dev, dkunit(dev), BASE_SLICE + dospart, - RAW_PART, partname); - (void)mbr_setslice(sname, lp, sp, dp, mbr_offset); - } - ssp->dss_nslices = BASE_SLICE + NDOSPART; - - /* Handle extended partitions. */ - sp -= NDOSPART; - for (dospart = 0; dospart < NDOSPART; dospart++, sp++) - if (sp->ds_type == DOSPTYP_EXTENDED || - sp->ds_type == DOSPTYP_EXTENDEDX) - mbr_extended(bp->b_dev, lp, ssp, - sp->ds_offset, sp->ds_size, sp->ds_offset, - max_nsectors, max_ntracks, mbr_offset, 1); - - /* - * mbr_extended() abuses ssp->dss_nslices for the number of slices - * that would be found if there were no limit on the number of slices - * in *ssp. Cut it back now. - */ - if (ssp->dss_nslices > MAX_SLICES) - ssp->dss_nslices = MAX_SLICES; - -done: - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - if (error == EINVAL) - error = 0; - return (error); -} - -static void -mbr_extended(dev, lp, ssp, ext_offset, ext_size, base_ext_offset, nsectors, - ntracks, mbr_offset, level) - dev_t dev; - struct disklabel *lp; - struct diskslices *ssp; - u_long ext_offset; - u_long ext_size; - u_long base_ext_offset; - int nsectors; - int ntracks; - u_long mbr_offset; - int level; -{ - struct buf *bp; - u_char *cp; - int dospart; - struct dos_partition *dp; - struct dos_partition dpcopy[NDOSPART]; - u_long ext_offsets[NDOSPART]; - u_long ext_sizes[NDOSPART]; - char partname[2]; - int slice; - char *sname; - struct diskslice *sp; - - if (level >= 16) { - printf( - "%s: excessive recursion in search for slices; aborting search\n", - devtoname(dev)); - return; - } - - /* Read extended boot record. */ - bp = geteblk((int)lp->d_secsize); - bp->b_dev = dev; - bp->b_blkno = ext_offset; - bp->b_bcount = lp->d_secsize; - bp->b_iocmd = BIO_READ; - DEV_STRATEGY(bp); - if (bufwait(bp) != 0) { - disk_err(&bp->b_io, "reading extended partition table: error", - 0, 1); - goto done; - } - - /* Weakly verify it. */ - cp = bp->b_data; - if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) { - sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE, RAW_PART, - partname); - if (bootverbose) - printf("%s: invalid extended partition table: no magic\n", - sname); - goto done; - } - - /* Make a copy of the partition table to avoid alignment problems. */ - memcpy(&dpcopy[0], cp + DOSPARTOFF, sizeof(dpcopy)); - - slice = ssp->dss_nslices; - for (dospart = 0, dp = &dpcopy[0]; dospart < NDOSPART; - dospart++, dp++) { - ext_sizes[dospart] = 0; - if (dp->dp_scyl == 0 && dp->dp_shd == 0 && dp->dp_ssect == 0 - && dp->dp_start == 0 && dp->dp_size == 0) - continue; - if (dp->dp_typ == DOSPTYP_EXTENDED || - dp->dp_typ == DOSPTYP_EXTENDEDX) { - static char buf[32]; - - sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE, - RAW_PART, partname); - snprintf(buf, sizeof(buf), "%s", sname); - if (strlen(buf) < sizeof buf - 11) - strcat(buf, "<extended>"); - check_part(buf, dp, base_ext_offset, nsectors, - ntracks, mbr_offset); - ext_offsets[dospart] = base_ext_offset + dp->dp_start; - ext_sizes[dospart] = dp->dp_size; - } else { - sname = dsname(dev, dkunit(dev), slice, RAW_PART, - partname); - check_part(sname, dp, ext_offset, nsectors, ntracks, - mbr_offset); - if (slice >= MAX_SLICES) { - printf("%s: too many slices\n", sname); - slice++; - continue; - } - sp = &ssp->dss_slices[slice]; - if (mbr_setslice(sname, lp, sp, dp, ext_offset) != 0) - continue; - slice++; - } - } - ssp->dss_nslices = slice; - - /* If we found any more slices, recursively find all the subslices. */ - for (dospart = 0; dospart < NDOSPART; dospart++) - if (ext_sizes[dospart] != 0) - mbr_extended(dev, lp, ssp, ext_offsets[dospart], - ext_sizes[dospart], base_ext_offset, - nsectors, ntracks, mbr_offset, ++level); - -done: - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); -} - -static int -mbr_setslice(sname, lp, sp, dp, br_offset) - char *sname; - struct disklabel *lp; - struct diskslice *sp; - struct dos_partition *dp; - u_long br_offset; -{ - u_long offset; - u_long size; - - offset = br_offset + dp->dp_start; - if (offset > lp->d_secperunit || offset < br_offset) { - printf( - "%s: slice starts beyond end of the disk: rejecting it\n", - sname); - return (1); - } - size = lp->d_secperunit - offset; - if (size >= dp->dp_size) - size = dp->dp_size; - else - printf( -"%s: slice extends beyond end of disk: truncating from %lu to %lu sectors\n", - sname, (u_long)dp->dp_size, size); - sp->ds_offset = offset; - sp->ds_size = size; - sp->ds_type = dp->dp_typ; -#ifdef PC98_ATCOMPAT - /* Fake FreeBSD(98). */ - if (sp->ds_type == DOSPTYP_386BSD) - sp->ds_type = 0x94; -#endif -#if 0 - lp->d_subtype |= (lp->d_subtype & 3) | dospart | DSTYPE_INDOSPART; -#endif - return (0); -} -#endif diff --git a/sys/kern/subr_diskslice.c b/sys/kern/subr_diskslice.c deleted file mode 100644 index f674c37..0000000 --- a/sys/kern/subr_diskslice.c +++ /dev/null @@ -1,940 +0,0 @@ -#ifdef NO_GEOM -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - * - * from: @(#)wd.c 7.2 (Berkeley) 5/9/91 - * from: wd.c,v 1.55 1994/10/22 01:57:12 phk Exp $ - * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 - * from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $ - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bio.h> -#include <sys/conf.h> -#include <sys/disk.h> -#include <sys/disklabel.h> -#include <sys/diskslice.h> -#if defined(PC98) && !defined(PC98_ATCOMPAT) -#include <sys/diskpc98.h> -#else -#include <sys/diskmbr.h> -#endif -#include <sys/fcntl.h> -#include <sys/malloc.h> -#include <sys/stat.h> -#include <sys/stdint.h> -#include <sys/syslog.h> -#include <sys/vnode.h> - -#define TRACE(str) do { if (ds_debug) printf str; } while (0) - -typedef u_char bool_t; - -static volatile bool_t ds_debug; - -static struct disklabel *clone_label(struct disklabel *lp); -static void dsiodone(struct bio *bp); -static char *fixlabel(char *sname, struct diskslice *sp, - struct disklabel *lp, int writeflag); -static void free_ds_label(struct diskslices *ssp, int slice); -static void partition_info(char *sname, int part, struct partition *pp); -static void slice_info(char *sname, struct diskslice *sp); -static void set_ds_label(struct diskslices *ssp, int slice, - struct disklabel *lp); -static void set_ds_labeldevs(dev_t dev, struct diskslices *ssp); -static void set_ds_wlabel(struct diskslices *ssp, int slice, - int wlabel); - -/* - * Duplicate a label for the whole disk, and initialize defaults in the - * copy for fields that are not already initialized. The caller only - * needs to initialize d_secsize and d_secperunit, and zero the fields - * that are to be defaulted. - */ -static struct disklabel * -clone_label(lp) - struct disklabel *lp; -{ - struct disklabel *lp1; - - lp1 = malloc(sizeof *lp1, M_DEVBUF, 0); - *lp1 = *lp; - lp = NULL; - if (lp1->d_typename[0] == '\0') - strlcpy(lp1->d_typename, "amnesiac", sizeof(lp1->d_typename)); - if (lp1->d_packname[0] == '\0') - strlcpy(lp1->d_packname, "fictitious", sizeof(lp1->d_packname)); - if (lp1->d_nsectors == 0) - lp1->d_nsectors = 32; - if (lp1->d_ntracks == 0) - lp1->d_ntracks = 64; - lp1->d_secpercyl = lp1->d_nsectors * lp1->d_ntracks; - lp1->d_ncylinders = lp1->d_secperunit / lp1->d_secpercyl; - if (lp1->d_rpm == 0) - lp1->d_rpm = 3600; - if (lp1->d_interleave == 0) - lp1->d_interleave = 1; - if (lp1->d_npartitions < RAW_PART + 1) - lp1->d_npartitions = MAXPARTITIONS; - if (lp1->d_bbsize == 0) - lp1->d_bbsize = BBSIZE; - lp1->d_partitions[RAW_PART].p_size = lp1->d_secperunit; - lp1->d_magic = DISKMAGIC; - lp1->d_magic2 = DISKMAGIC; - lp1->d_checksum = dkcksum(lp1); - return (lp1); -} - -dev_t -dkmodslice(dev_t dev, int slice) -{ - return (makedev(major(dev), (minor(dev) & ~0x1f0000) | (slice << 16))); -} - -u_int -dkunit(dev_t dev) -{ - return (((minor(dev) >> 16) & 0x1e0) | ((minor(dev) >> 3) & 0x1f)); -} - -/* - * Determine the size of the transfer, and make sure it is - * within the boundaries of the partition. Adjust transfer - * if needed, and signal errors or early completion. - * - * XXX TODO: - * o Split buffers that are too big for the device. - * o Check for overflow. - * o Finish cleaning this up. - */ -int -dscheck(bp, ssp) - struct bio *bp; - struct diskslices *ssp; -{ - daddr_t blkno; - daddr_t endsecno; - daddr_t labelsect; - struct disklabel *lp; - char *msg; - long nsec; - struct partition *pp; - daddr_t secno; - daddr_t slicerel_secno; - struct diskslice *sp; - - blkno = bp->bio_blkno; - if (blkno < 0) { - printf("dscheck(%s): negative bio_blkno %ld\n", - devtoname(bp->bio_dev), (long)blkno); - bp->bio_error = EINVAL; - goto bad; - } - sp = &ssp->dss_slices[dkslice(bp->bio_dev)]; - lp = sp->ds_label; - if (ssp->dss_secmult == 1) { - if (bp->bio_bcount % (u_long)DEV_BSIZE) - goto bad_bcount; - secno = blkno; - nsec = bp->bio_bcount >> DEV_BSHIFT; - } else if (ssp->dss_secshift != -1) { - if (bp->bio_bcount & (ssp->dss_secsize - 1)) - goto bad_bcount; - if (blkno & (ssp->dss_secmult - 1)) - goto bad_blkno; - secno = blkno >> ssp->dss_secshift; - nsec = bp->bio_bcount >> (DEV_BSHIFT + ssp->dss_secshift); - } else { - if (bp->bio_bcount % ssp->dss_secsize) - goto bad_bcount; - if (blkno % ssp->dss_secmult) - goto bad_blkno; - secno = blkno / ssp->dss_secmult; - nsec = bp->bio_bcount / ssp->dss_secsize; - } - if (lp == NULL) { - labelsect = -LABELSECTOR - 1; - endsecno = sp->ds_size; - slicerel_secno = secno; - } else { - labelsect = lp->d_partitions[LABEL_PART].p_offset; - if (labelsect != 0) - Debugger("labelsect != 0 in dscheck()"); - pp = &lp->d_partitions[dkpart(bp->bio_dev)]; - endsecno = pp->p_size; - slicerel_secno = pp->p_offset + secno; - } - - /* overwriting disk label ? */ - /* XXX should also protect bootstrap in first 8K */ - if (slicerel_secno <= LABELSECTOR + labelsect && -#if LABELSECTOR != 0 - slicerel_secno + nsec > LABELSECTOR + labelsect && -#endif - (bp->bio_cmd == BIO_WRITE) && sp->ds_wlabel == 0) { - bp->bio_error = EROFS; - goto bad; - } - -#if defined(DOSBBSECTOR) && defined(notyet) - /* overwriting master boot record? */ - if (slicerel_secno <= DOSBBSECTOR && (bp->bio_cmd == BIO_WRITE) && - sp->ds_wlabel == 0) { - bp->bio_error = EROFS; - goto bad; - } -#endif - - /* beyond partition? */ - if ((uintmax_t)secno + nsec > endsecno) { - /* if exactly at end of disk, return an EOF */ - if (secno == endsecno) { - bp->bio_resid = bp->bio_bcount; - return (0); - } - /* or truncate if part of it fits */ - if (secno > endsecno) { - bp->bio_error = EINVAL; - goto bad; - } - bp->bio_bcount = (endsecno - secno) * ssp->dss_secsize; - } - - bp->bio_pblkno = sp->ds_offset + slicerel_secno; - - /* - * Snoop on label accesses if the slice offset is nonzero. Fudge - * offsets in the label to keep the in-core label coherent with - * the on-disk one. - */ - if (slicerel_secno <= LABELSECTOR + labelsect -#if LABELSECTOR != 0 - && slicerel_secno + nsec > LABELSECTOR + labelsect -#endif - && sp->ds_offset != 0) { - struct iodone_chain *ic; - - ic = malloc(sizeof *ic , M_DEVBUF, 0); - ic->ic_prev_flags = bp->bio_flags; - ic->ic_prev_iodone = bp->bio_done; - ic->ic_prev_iodone_chain = bp->bio_done_chain; - ic->ic_args[0].ia_long = (LABELSECTOR + labelsect - - slicerel_secno) * ssp->dss_secsize; - ic->ic_args[1].ia_ptr = sp; - bp->bio_done = dsiodone; - bp->bio_done_chain = ic; - if (!(bp->bio_cmd == BIO_READ)) { - /* - * XXX even disklabel(8) writes directly so we need - * to adjust writes. Perhaps we should drop support - * for DIOCWLABEL (always write protect labels) and - * require the use of DIOCWDINFO. - * - * XXX probably need to copy the data to avoid even - * temporarily corrupting the in-core copy. - */ - /* XXX need name here. */ - msg = fixlabel((char *)NULL, sp, - (struct disklabel *) - (bp->bio_data + ic->ic_args[0].ia_long), - TRUE); - if (msg != NULL) { - printf("dscheck(%s): %s\n", - devtoname(bp->bio_dev), msg); - bp->bio_error = EROFS; - goto bad; - } - } - } - return (1); - -bad_bcount: - printf( - "dscheck(%s): bio_bcount %ld is not on a sector boundary (ssize %d)\n", - devtoname(bp->bio_dev), bp->bio_bcount, ssp->dss_secsize); - bp->bio_error = EINVAL; - goto bad; - -bad_blkno: - printf( - "dscheck(%s): bio_blkno %ld is not on a sector boundary (ssize %d)\n", - devtoname(bp->bio_dev), (long)blkno, ssp->dss_secsize); - bp->bio_error = EINVAL; - goto bad; - -bad: - bp->bio_resid = bp->bio_bcount; - bp->bio_flags |= BIO_ERROR; - return (-1); -} - -void -dsclose(dev, mode, ssp) - dev_t dev; - int mode; - struct diskslices *ssp; -{ - u_char mask; - struct diskslice *sp; - - sp = &ssp->dss_slices[dkslice(dev)]; - mask = 1 << dkpart(dev); - sp->ds_openmask &= ~mask; -} - -void -dsgone(sspp) - struct diskslices **sspp; -{ - int slice; - struct diskslice *sp; - struct diskslices *ssp; - - for (slice = 0, ssp = *sspp; slice < ssp->dss_nslices; slice++) { - sp = &ssp->dss_slices[slice]; - free_ds_label(ssp, slice); - } - free(ssp, M_DEVBUF); - *sspp = NULL; -} - -/* - * For the "write" commands (DIOCSDINFO and DIOCWDINFO), this - * is subject to the same restriction as dsopen(). - */ -int -dsioctl(dev, cmd, data, flags, sspp) - dev_t dev; - u_long cmd; - caddr_t data; - int flags; - struct diskslices **sspp; -{ - int error; - struct disklabel *lp; - int old_wlabel; - u_char openmask; - int part; - int slice; - struct diskslice *sp; - struct diskslices *ssp; - - slice = dkslice(dev); - ssp = *sspp; - sp = &ssp->dss_slices[slice]; - lp = sp->ds_label; - switch (cmd) { - - case DIOCGDINFO: - if (lp == NULL) - return (EINVAL); - *(struct disklabel *)data = *lp; - return (0); - - case DIOCGMEDIASIZE: - if (lp == NULL) - *(off_t *)data = (off_t)sp->ds_size * ssp->dss_secsize; - else - *(off_t *)data = - (off_t)lp->d_partitions[dkpart(dev)].p_size * - lp->d_secsize; - return (0); - - case DIOCGSECTORSIZE: - *(u_int *)data = ssp->dss_secsize; - return (0); - - case DIOCGSLICEINFO: - bcopy(ssp, data, (char *)&ssp->dss_slices[ssp->dss_nslices] - - (char *)ssp); - return (0); - - case DIOCSDINFO: - if (slice == WHOLE_DISK_SLICE) - return (ENODEV); - if (!(flags & FWRITE)) - return (EBADF); - lp = malloc(sizeof *lp, M_DEVBUF, 0); - if (sp->ds_label == NULL) - bzero(lp, sizeof *lp); - else - bcopy(sp->ds_label, lp, sizeof *lp); - if (sp->ds_label == NULL) - openmask = 0; - else { - openmask = sp->ds_openmask; - if (slice == COMPATIBILITY_SLICE) - openmask |= ssp->dss_slices[ - ssp->dss_first_bsd_slice].ds_openmask; - else if (slice == ssp->dss_first_bsd_slice) - openmask |= ssp->dss_slices[ - COMPATIBILITY_SLICE].ds_openmask; - } - error = setdisklabel(lp, (struct disklabel *)data, - (u_long)openmask); - /* XXX why doesn't setdisklabel() check this? */ - if (error == 0 && lp->d_partitions[RAW_PART].p_offset != 0) - error = EXDEV; - if (error == 0) { - if (lp->d_secperunit > sp->ds_size) - error = ENOSPC; - for (part = 0; part < lp->d_npartitions; part++) - if (lp->d_partitions[part].p_size > sp->ds_size) - error = ENOSPC; - } - if (error != 0) { - free(lp, M_DEVBUF); - return (error); - } - free_ds_label(ssp, slice); - set_ds_label(ssp, slice, lp); - set_ds_labeldevs(dev, ssp); - return (0); - - case DIOCSYNCSLICEINFO: - if (slice != WHOLE_DISK_SLICE || dkpart(dev) != RAW_PART) - return (EINVAL); - if (!*(int *)data) - for (slice = 0; slice < ssp->dss_nslices; slice++) { - openmask = ssp->dss_slices[slice].ds_openmask; - if (openmask - && (slice != WHOLE_DISK_SLICE - || openmask & ~(1 << RAW_PART))) - return (EBUSY); - } - - /* - * Temporarily forget the current slices struct and read - * the current one. - * XXX should wait for current accesses on this disk to - * complete, then lock out future accesses and opens. - */ - *sspp = NULL; - lp = malloc(sizeof *lp, M_DEVBUF, 0); - *lp = *ssp->dss_slices[WHOLE_DISK_SLICE].ds_label; - error = dsopen(dev, S_IFCHR, ssp->dss_oflags, sspp, lp); - if (error != 0) { - free(lp, M_DEVBUF); - *sspp = ssp; - return (error); - } - - /* - * Reopen everything. This is a no-op except in the "force" - * case and when the raw bdev and cdev are both open. Abort - * if anything fails. - */ - for (slice = 0; slice < ssp->dss_nslices; slice++) { - for (openmask = ssp->dss_slices[slice].ds_openmask, - part = 0; openmask; openmask >>= 1, part++) { - if (!(openmask & 1)) - continue; - error = dsopen(dkmodslice(dkmodpart(dev, part), - slice), - S_IFCHR, ssp->dss_oflags, sspp, - lp); - if (error != 0) { - free(lp, M_DEVBUF); - *sspp = ssp; - return (EBUSY); - } - } - } - - free(lp, M_DEVBUF); - dsgone(&ssp); - return (0); - - case DIOCWDINFO: - error = dsioctl(dev, DIOCSDINFO, data, flags, &ssp); - if (error != 0) - return (error); - /* - * XXX this used to hack on dk_openpart to fake opening - * partition 0 in case that is used instead of dkpart(dev). - */ - old_wlabel = sp->ds_wlabel; - set_ds_wlabel(ssp, slice, TRUE); - error = writedisklabel(dev, sp->ds_label); - /* XXX should invalidate in-core label if write failed. */ - set_ds_wlabel(ssp, slice, old_wlabel); - return (error); - - case DIOCWLABEL: -#ifndef __alpha__ - if (slice == WHOLE_DISK_SLICE) - return (ENODEV); -#endif - if (!(flags & FWRITE)) - return (EBADF); - set_ds_wlabel(ssp, slice, *(int *)data != 0); - return (0); - - default: - return (ENOIOCTL); - } -} - -static void -dsiodone(bp) - struct bio *bp; -{ - struct iodone_chain *ic; - char *msg; - - ic = bp->bio_done_chain; - bp->bio_done = ic->ic_prev_iodone; - bp->bio_done_chain = ic->ic_prev_iodone_chain; - if (!(bp->bio_cmd == BIO_READ) - || (!(bp->bio_flags & BIO_ERROR) && bp->bio_error == 0)) { - msg = fixlabel((char *)NULL, ic->ic_args[1].ia_ptr, - (struct disklabel *) - (bp->bio_data + ic->ic_args[0].ia_long), - FALSE); - if (msg != NULL) - printf("%s\n", msg); - } - free(ic, M_DEVBUF); - biodone(bp); -} - -int -dsisopen(ssp) - struct diskslices *ssp; -{ - int slice; - - if (ssp == NULL) - return (0); - for (slice = 0; slice < ssp->dss_nslices; slice++) - if (ssp->dss_slices[slice].ds_openmask) - return (1); - return (0); -} - -/* - * Allocate a slices "struct" and initialize it to contain only an empty - * compatibility slice (pointing to itself), a whole disk slice (covering - * the disk as described by the label), and (nslices - BASE_SLICES) empty - * slices beginning at BASE_SLICE. - */ -struct diskslices * -dsmakeslicestruct(nslices, lp) - int nslices; - struct disklabel *lp; -{ - struct diskslice *sp; - struct diskslices *ssp; - - ssp = malloc(offsetof(struct diskslices, dss_slices) + - nslices * sizeof *sp, M_DEVBUF, 0); - ssp->dss_first_bsd_slice = COMPATIBILITY_SLICE; - ssp->dss_nslices = nslices; - ssp->dss_oflags = 0; - ssp->dss_secmult = lp->d_secsize / DEV_BSIZE; - if (ssp->dss_secmult & (ssp->dss_secmult - 1)) - ssp->dss_secshift = -1; - else - ssp->dss_secshift = ffs(ssp->dss_secmult) - 1; - ssp->dss_secsize = lp->d_secsize; - sp = &ssp->dss_slices[0]; - bzero(sp, nslices * sizeof *sp); - sp[WHOLE_DISK_SLICE].ds_size = lp->d_secperunit; - return (ssp); -} - -char * -dsname(dev, unit, slice, part, partname) - dev_t dev; - int unit; - int slice; - int part; - char *partname; -{ - static char name[32]; - const char *dname; - - dname = devsw(dev)->d_name; - if (strlen(dname) > 16) - dname = "nametoolong"; - snprintf(name, sizeof(name), "%s%d", dname, unit); - partname[0] = '\0'; - if (slice != WHOLE_DISK_SLICE || part != RAW_PART) { - partname[0] = 'a' + part; - partname[1] = '\0'; - if (slice != COMPATIBILITY_SLICE) - snprintf(name + strlen(name), - sizeof(name) - strlen(name), "s%d", slice - 1); - } - return (name); -} - -/* - * This should only be called when the unit is inactive and the strategy - * routine should not allow it to become active unless we call it. Our - * strategy routine must be special to allow activity. - */ -int -dsopen(dev, mode, flags, sspp, lp) - dev_t dev; - int mode; - u_int flags; - struct diskslices **sspp; - struct disklabel *lp; -{ - dev_t dev1; - int error; - struct disklabel *lp1; - char *msg; - u_char mask; - int part; - char partname[2]; - int slice; - char *sname; - struct diskslice *sp; - struct diskslices *ssp; - int unit; - - dev->si_bsize_phys = lp->d_secsize; - - unit = dkunit(dev); - if (lp->d_secsize % DEV_BSIZE) { - printf("%s: invalid sector size %lu\n", devtoname(dev), - (u_long)lp->d_secsize); - return (EINVAL); - } - - /* - * XXX reinitialize the slice table unless there is an open device - * on the unit. This should only be done if the media has changed. - */ - ssp = *sspp; - if (!dsisopen(ssp)) { - if (ssp != NULL) - dsgone(sspp); - /* - * Allocate a minimal slices "struct". This will become - * the final slices "struct" if we don't want real slices - * or if we can't find any real slices. - */ - *sspp = dsmakeslicestruct(BASE_SLICE, lp); - - TRACE(("dsinit\n")); - error = dsinit(dev, lp, sspp); - if (error != 0) { - dsgone(sspp); - return (error); - } - ssp = *sspp; - ssp->dss_oflags = flags; - - /* - * If there are no real slices, then make the compatiblity - * slice cover the whole disk. - */ - if (ssp->dss_nslices == BASE_SLICE) - ssp->dss_slices[COMPATIBILITY_SLICE].ds_size - = lp->d_secperunit; - - /* Point the compatibility slice at the BSD slice, if any. */ - for (slice = BASE_SLICE; slice < ssp->dss_nslices; slice++) { - sp = &ssp->dss_slices[slice]; - if (sp->ds_type == DOSPTYP_386BSD /* XXX */) { - ssp->dss_first_bsd_slice = slice; - ssp->dss_slices[COMPATIBILITY_SLICE].ds_offset - = sp->ds_offset; - ssp->dss_slices[COMPATIBILITY_SLICE].ds_size - = sp->ds_size; - ssp->dss_slices[COMPATIBILITY_SLICE].ds_type - = sp->ds_type; - break; - } - } - - ssp->dss_slices[WHOLE_DISK_SLICE].ds_label = clone_label(lp); - ssp->dss_slices[WHOLE_DISK_SLICE].ds_wlabel = TRUE; - } - - /* Initialize secondary info for all slices. */ - for (slice = 0; slice < ssp->dss_nslices; slice++) { - sp = &ssp->dss_slices[slice]; - if (sp->ds_label != NULL -#ifdef __alpha__ - && slice != WHOLE_DISK_SLICE -#endif - ) - continue; - dev1 = dkmodslice(dkmodpart(dev, RAW_PART), slice); -#if 0 - sname = dsname(dev, unit, slice, RAW_PART, partname); -#else - *partname='\0'; - sname = dev1->si_name; -#endif - /* - * XXX this should probably only be done for the need_init - * case, but there may be a problem with DIOCSYNCSLICEINFO. - */ - set_ds_wlabel(ssp, slice, TRUE); /* XXX invert */ - lp1 = clone_label(lp); - TRACE(("readdisklabel\n")); - msg = readdisklabel(dev1, lp1); - if (msg == NULL) - msg = fixlabel(sname, sp, lp1, FALSE); - if (msg == NULL && lp1->d_secsize != ssp->dss_secsize) - msg = "inconsistent sector size"; - if (msg != NULL) { - if (sp->ds_type == DOSPTYP_386BSD /* XXX */) - log(LOG_WARNING, "%s: cannot find label (%s)\n", - sname, msg); - free(lp1, M_DEVBUF); - continue; - } - if (lp1->d_flags & D_BADSECT) { - log(LOG_ERR, "%s: bad sector table not supported\n", - sname); - free(lp1, M_DEVBUF); - continue; - } - set_ds_label(ssp, slice, lp1); - set_ds_labeldevs(dev1, ssp); - set_ds_wlabel(ssp, slice, FALSE); - } - - slice = dkslice(dev); - if (slice >= ssp->dss_nslices) - return (ENXIO); - sp = &ssp->dss_slices[slice]; - part = dkpart(dev); - if (part != RAW_PART - && (sp->ds_label == NULL || part >= sp->ds_label->d_npartitions)) - return (EINVAL); /* XXX needs translation */ - mask = 1 << part; - sp->ds_openmask |= mask; - return (0); -} - -int -dssize(dev, sspp) - dev_t dev; - struct diskslices **sspp; -{ - struct disklabel *lp; - int part; - int slice; - struct diskslices *ssp; - - slice = dkslice(dev); - part = dkpart(dev); - ssp = *sspp; - if (ssp == NULL || slice >= ssp->dss_nslices - || !(ssp->dss_slices[slice].ds_openmask & (1 << part))) { - if (devsw(dev)->d_open(dev, FREAD, S_IFCHR, - (struct thread *)NULL) != 0) - return (-1); - devsw(dev)->d_close(dev, FREAD, S_IFCHR, (struct thread *)NULL); - ssp = *sspp; - } - lp = ssp->dss_slices[slice].ds_label; - if (lp == NULL) - return (-1); - return ((int)lp->d_partitions[part].p_size); -} - -static void -free_ds_label(ssp, slice) - struct diskslices *ssp; - int slice; -{ - struct disklabel *lp; - struct diskslice *sp; - - sp = &ssp->dss_slices[slice]; - lp = sp->ds_label; - if (lp == NULL) - return; - free(lp, M_DEVBUF); - set_ds_label(ssp, slice, (struct disklabel *)NULL); -} - - -static char * -fixlabel(sname, sp, lp, writeflag) - char *sname; - struct diskslice *sp; - struct disklabel *lp; - int writeflag; -{ - u_long end; - u_long offset; - int part; - struct partition *pp; - u_long start; - bool_t warned; - - /* These errors "can't happen" so don't bother reporting details. */ - if (lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC) - return ("fixlabel: invalid magic"); - if (dkcksum(lp) != 0) - return ("fixlabel: invalid checksum"); - - pp = &lp->d_partitions[RAW_PART]; - 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) { - printf( -"%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) { - printf("%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"); - printf("%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) { - printf( -"%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 = dkcksum(lp); - return (NULL); -} - -static void -partition_info(sname, part, pp) - char *sname; - int part; - struct partition *pp; -{ - printf("%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(sname, sp) - char *sname; - struct diskslice *sp; -{ - printf("%s: start %lu, end %lu, size %lu\n", sname, - sp->ds_offset, sp->ds_offset + sp->ds_size - 1, sp->ds_size); -} - -static void -set_ds_label(ssp, slice, lp) - struct diskslices *ssp; - int slice; - struct disklabel *lp; -{ - ssp->dss_slices[slice].ds_label = lp; - if (slice == COMPATIBILITY_SLICE) - ssp->dss_slices[ssp->dss_first_bsd_slice].ds_label = lp; - else if (slice == ssp->dss_first_bsd_slice) - ssp->dss_slices[COMPATIBILITY_SLICE].ds_label = lp; -} - -static void -set_ds_labeldevs(dev, ssp) - dev_t dev; - struct diskslices *ssp; -{ -} - - -static void -set_ds_wlabel(ssp, slice, wlabel) - struct diskslices *ssp; - int slice; - int wlabel; -{ - ssp->dss_slices[slice].ds_wlabel = wlabel; - if (slice == COMPATIBILITY_SLICE) - ssp->dss_slices[ssp->dss_first_bsd_slice].ds_wlabel = wlabel; - else if (slice == ssp->dss_first_bsd_slice) - ssp->dss_slices[COMPATIBILITY_SLICE].ds_wlabel = wlabel; -} -#endif diff --git a/sys/pc98/pc98/diskslice_machdep.c b/sys/pc98/pc98/diskslice_machdep.c deleted file mode 100644 index af8f206..0000000 --- a/sys/pc98/pc98/diskslice_machdep.c +++ /dev/null @@ -1,404 +0,0 @@ -#ifdef NO_GEOM -/*- - * Copyright (c) 1994 Bruce D. Evans. - * All rights reserved. - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - * - * from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91 - * from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $ - * $FreeBSD$ - */ - -/* - * PC9801 port by KATO Takenor <kato@eclogite.eps.nagoya-u.ac.jp> - */ - -#include "compat_atdisk.h" - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bio.h> -#include <sys/buf.h> -#include <sys/conf.h> -#include <sys/disk.h> -#include <sys/disklabel.h> -#if defined(PC98) && !defined(PC98_ATCOMPAT) -#include <sys/diskpc98.h> -#else -#include <sys/diskmbr.h> -#endif -#include <sys/diskslice.h> -#include <sys/malloc.h> -#include <sys/syslog.h> - -#define TRACE(str) do { if (dsi_debug) printf str; } while (0) - -static volatile u_char dsi_debug; - - -static int check_part(char *sname, struct pc98_partition *dp, - u_long offset, int nsectors, int ntracks, - u_long mbr_offset); -static int mbr_setslice(char *sname, struct disklabel *lp, - struct diskslice *sp, struct pc98_partition *dp, - u_long br_offset); - -#define DPBLKNO(cyl,hd,sect) ((cyl)*(lp->d_secpercyl)) -#if NCOMPAT_ATDISK > 0 -int atcompat_dsinit(dev_t dev, - struct disklabel *lp, struct diskslices **sspp); -#endif - -static int -check_part(sname, dp, offset, nsectors, ntracks, mbr_offset ) - char *sname; - struct pc98_partition *dp; - u_long offset; - int nsectors; - int ntracks; - u_long mbr_offset; -{ - int chs_ecyl; - int chs_esect; - int chs_scyl; - int chs_ssect; - int error; - u_long esector; - u_long esector1; - u_long secpercyl; - u_long ssector; - u_long ssector1; - u_long pc98_start; - u_long pc98_size; - - secpercyl = (u_long)nsectors * ntracks; - chs_scyl = dp->dp_scyl; - chs_ssect = dp->dp_ssect; - ssector = chs_ssect + dp->dp_shd * nsectors + - chs_scyl * secpercyl + mbr_offset; - pc98_start = dp->dp_scyl * secpercyl; - pc98_size = dp->dp_ecyl ? - (dp->dp_ecyl + 1) * secpercyl - pc98_start : 0; - ssector1 = offset + pc98_start; - - /* - * If ssector1 is on a cylinder >= 1024, then ssector can't be right. - * Allow the C/H/S for it to be 1023/ntracks-1/nsectors, or correct - * apart from the cylinder being reduced modulo 1024. Always allow - * 1023/255/63. - */ - if ((ssector < ssector1 - && ((chs_ssect == nsectors && dp->dp_shd == ntracks - 1 - && chs_scyl == 1023) - || (secpercyl != 0 - && (ssector1 - ssector) % (1024 * secpercyl) == 0))) - || (dp->dp_scyl == 255 && dp->dp_shd == 255 - && dp->dp_ssect == 255)) { - TRACE(("%s: C/H/S start %d/%d/%d, start %lu: allow\n", - sname, chs_scyl, dp->dp_shd, chs_ssect, ssector1)); - ssector = ssector1; - } - - chs_ecyl = dp->dp_ecyl; - chs_esect = nsectors - 1; - esector = chs_esect + (ntracks - 1) * nsectors + - chs_ecyl * secpercyl + mbr_offset; - esector1 = ssector1 + pc98_size - 1; - - /* Allow certain bogus C/H/S values for esector, as above. */ - if ((esector < esector1 - && ((chs_esect == nsectors && dp->dp_ehd == ntracks - 1 - && chs_ecyl == 1023) - || (secpercyl != 0 - && (esector1 - esector) % (1024 * secpercyl) == 0))) - || (dp->dp_ecyl == 255 && dp->dp_ehd == 255 - && dp->dp_esect == 255)) { - TRACE(("%s: C/H/S end %d/%d/%d, end %lu: allow\n", - sname, chs_ecyl, dp->dp_ehd, chs_esect, esector1)); - esector = esector1; - } - - error = (ssector == ssector1 && esector == esector1) ? 0 : EINVAL; - if (bootverbose) - printf("%s: mid 0x%x, start %lu, end = %lu, size %lu%s\n", - sname, dp->dp_mid, ssector1, esector1, pc98_size, - error ? "" : ": OK"); - if (ssector != ssector1 && bootverbose) - printf("%s: C/H/S start %d/%d/%d (%lu) != start %lu: invalid\n", - sname, chs_scyl, dp->dp_shd, chs_ssect, - ssector, ssector1); - if (esector != esector1 && bootverbose) - printf("%s: C/H/S end %d/%d/%d (%lu) != end %lu: invalid\n", - sname, chs_ecyl, dp->dp_ehd, chs_esect, - esector, esector1); - return (error); -} - -int -dsinit(dev, lp, sspp) - dev_t dev; - struct disklabel *lp; - struct diskslices **sspp; -{ - struct buf *bp; - u_char *cp; - int dospart; - struct pc98_partition *dp; - struct pc98_partition *dp0; - int error; - int max_ncyls; - int max_nsectors; - int max_ntracks; - u_long mbr_offset; - char partname[2]; - u_long secpercyl; - char *sname; - struct diskslice *sp; - struct diskslices *ssp; - - mbr_offset = DOSBBSECTOR; - /* Read master boot record. */ - if ((int)lp->d_secsize < 1024) - bp = geteblk((int)1024); - else - bp = geteblk((int)lp->d_secsize); - bp->b_dev = dkmodpart(dkmodslice(dev, WHOLE_DISK_SLICE), RAW_PART); - bp->b_blkno = mbr_offset; - bp->b_bcount = lp->d_secsize; - bp->b_iocmd = BIO_READ; - if (bp->b_bcount < 1024) - bp->b_bcount = 1024; - DEV_STRATEGY(bp); - if (bufwait(bp) != 0) { - disk_err(&bp->b_io, "reading primary partition table: error", - 0, 1); - error = EIO; - goto done; - } - - /* Weakly verify it. */ - cp = bp->b_data; - sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE, RAW_PART, partname); - if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) { - if (bootverbose) - printf("%s: invalid primary partition table: no magic\n", - sname); - error = EINVAL; - goto done; - } - /* - * entire disk for FreeBSD - */ - if ((*(cp + 512) == 0x57) && (*(cp + 513) == 0x45) && - (*(cp + 514) == 0x56) && (*(cp + 515) == 0x82)) { - sname = dsname(dev, dkunit(dev), BASE_SLICE, - RAW_PART, partname); - free(*sspp, M_DEVBUF); - ssp = dsmakeslicestruct(MAX_SLICES, lp); - *sspp = ssp; - - /* Initialize normal slices. */ - sp = &ssp->dss_slices[BASE_SLICE]; - sp->ds_offset = 0; - sp->ds_size = lp->d_secperunit; - sp->ds_type = DOSPTYP_386BSD; - sp->ds_subtype = 0xc4; - error = 0; - ssp->dss_nslices = BASE_SLICE + 1; - goto done; - } - - /* - * XXX --- MS-DOG MO - */ - if ((*(cp + 0x0e) == 1) && (*(cp + 0x15) == 0xf0) && - (*(cp + 0x1c) == 0x0) && - ((*(cp + 512) == 0xf0) || (*(cp + 512) == 0xf8)) && - (*(cp + 513) == 0xff) && (*(cp + 514) == 0xff)) { - sname = dsname(dev, dkunit(dev), BASE_SLICE, - RAW_PART, partname); - free(*sspp, M_DEVBUF); - ssp = dsmakeslicestruct(MAX_SLICES, lp); - *sspp = ssp; - - /* Initialize normal slices. */ - sp = &ssp->dss_slices[BASE_SLICE]; - sp->ds_offset = 0; - sp->ds_size = lp->d_secperunit; - sp->ds_type = 0xa0; /* XXX */ - sp->ds_subtype = 0x81; /* XXX */ - error = 0; - ssp->dss_nslices = BASE_SLICE + 1; - goto done; - } -#if NCOMPAT_ATDISK > 0 - /* - * Check magic number of 'extended format' for PC-9801. - * If no magic, it may be formatted on IBM-PC. - */ - if (((cp[4] != 'I') || (cp[5] != 'P') || (cp[6] != 'L') || - (cp[7] != '1')) && - ((strncmp(devtoname(bp->b_dev), "da", 2) == 0) || - (strncmp(devtoname(bp->b_dev), "wd", 2) == 0) || - (strncmp(devtoname(bp->b_dev), "ad", 2) == 0))) { - /* IBM-PC HDD */ - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - return atcompat_dsinit(dev, lp, sspp); - } -#endif - dp0 = (struct pc98_partition *)(cp + 512); - - /* Guess the geometry. */ - /* - * TODO: - * Perhaps skip entries with 0 size. - * Perhaps only look at entries of type DOSPTYP_386BSD. - */ - max_ncyls = 0; - max_nsectors = 0; - max_ntracks = 0; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) { - int ncyls; - int nsectors; - int ntracks; - - - ncyls = lp->d_ncylinders; - if (max_ncyls < ncyls) - max_ncyls = ncyls; - nsectors = lp->d_nsectors; - if (max_nsectors < nsectors) - max_nsectors = nsectors; - ntracks = lp->d_ntracks; - if (max_ntracks < ntracks) - max_ntracks = ntracks; - } - - /* - * Check that we have guessed the geometry right by checking the - * partition entries. - */ - /* - * TODO: - * As above. - * Check for overlaps. - * Check against d_secperunit if the latter is reliable. - */ - error = 0; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) { - if (dp->dp_scyl == 0 && dp->dp_shd == 0 && dp->dp_ssect == 0) - continue; - sname = dsname(dev, dkunit(dev), BASE_SLICE + dospart, - RAW_PART, partname); - /* - * Temporarily ignore errors from this check. We could - * simplify things by accepting the table eariler if we - * always ignore errors here. Perhaps we should always - * accept the table if the magic is right but not let - * bad entries affect the geometry. - */ - check_part(sname, dp, mbr_offset, max_nsectors, max_ntracks, - mbr_offset); - } - if (error != 0) - goto done; - - /* - * Accept the DOS partition table. - * First adjust the label (we have been careful not to change it - * before we can guarantee success). - */ - secpercyl = (u_long)max_nsectors * max_ntracks; - if (secpercyl != 0) { - lp->d_nsectors = max_nsectors; - lp->d_ntracks = max_ntracks; - lp->d_secpercyl = secpercyl; - lp->d_ncylinders = lp->d_secperunit / secpercyl; - } - - /* - * We are passed a pointer to a suitably initialized minimal - * slices "struct" with no dangling pointers in it. Replace it - * by a maximal one. This usually oversizes the "struct", but - * enlarging it while searching for logical drives would be - * inconvenient. - */ - free(*sspp, M_DEVBUF); - ssp = dsmakeslicestruct(MAX_SLICES, lp); - *sspp = ssp; - - /* Initialize normal slices. */ - sp = &ssp->dss_slices[BASE_SLICE]; - for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++, sp++) { - sname = dsname(dev, dkunit(dev), BASE_SLICE + dospart, - RAW_PART, partname); - (void)mbr_setslice(sname, lp, sp, dp, mbr_offset); - } - ssp->dss_nslices = BASE_SLICE + NDOSPART; - - -done: - bp->b_flags |= B_INVAL | B_AGE; - brelse(bp); - if (error == EINVAL) - error = 0; - return (error); -} - - -static int -mbr_setslice(sname, lp, sp, dp, br_offset) - char *sname; - struct disklabel *lp; - struct diskslice *sp; - struct pc98_partition *dp; - u_long br_offset; -{ - u_long offset; - u_long size; - - offset = DPBLKNO(dp->dp_scyl, dp->dp_shd, dp->dp_ssect); - size = dp->dp_ecyl ? - DPBLKNO(dp->dp_ecyl + 1, dp->dp_ehd, dp->dp_esect) - offset : 0; - sp->ds_offset = offset; - sp->ds_size = size; - sp->ds_type = dp->dp_mid; - sp->ds_subtype = dp->dp_sid; - strncpy(sp->ds_name, dp->dp_name, sizeof(sp->ds_name)); -#if 0 - lp->d_subtype |= (lp->d_subtype & 3) | dospart | DSTYPE_INDOSPART; -#endif - return (0); -} -#endif |
