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Support extended DOSpartitions.
Accept even suspicious partitions. Moved most handling of the compatibility slice to dsopen(). Report i/o errors.
This commit is contained in:
Bruce Evans
parent
2973a0eba4
commit
7262c5ee2c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=6881
@ -35,17 +35,64 @@
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*
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* from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
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* from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $
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* $Id: diskslice_machdep.c,v 1.5 1995/02/21 08:37:09 bde Exp $
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* $Id: diskslice_machdep.c,v 1.6 1995/02/22 22:46:36 bde Exp $
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*/
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#include <stddef.h>
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#define DOSPTYP_EXTENDED 5
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#include <sys/diskslice.h>
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#include <sys/malloc.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#define TRACE(str) do { if (dsi_debug) printf str; } while (0)
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static volatile u_char dsi_debug;
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static int check_part __P((char *sname, struct dos_partition *dp,
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u_long offset, int nsectors, int ntracks));
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static void extended __P((char *dname, dev_t dev, d_strategy_t *strat,
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struct disklabel *lp, struct diskslices *ssp,
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u_long ext_offset, u_long ext_size,
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u_long base_ext_offset, int nsectors, int ntracks));
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static int
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check_part(sname, dp, offset, nsectors, ntracks)
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char *sname;
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struct dos_partition *dp;
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u_long offset;
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int nsectors;
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int ntracks;
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{
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int error;
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u_long esector;
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u_long esector1;
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u_long secpercyl;
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u_long ssector;
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u_long ssector1;
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secpercyl = (u_long)nsectors * ntracks;
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ssector = DPSECT(dp->dp_ssect) - 1 + dp->dp_shd * nsectors
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+ DPCYL(dp->dp_scyl, dp->dp_ssect) * secpercyl;
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ssector1 = offset + dp->dp_start;
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esector = DPSECT(dp->dp_esect) - 1 + dp->dp_ehd * nsectors
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+ DPCYL(dp->dp_ecyl, dp->dp_esect) * secpercyl;
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esector1 = ssector1 + dp->dp_size - 1;
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error = ssector == ssector1 && esector == esector1 ? 0 : EINVAL;
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printf("%s: start %lu, end = %lu, size %lu%s\n",
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sname, ssector, esector, dp->dp_size, error ? "" : ": OK");
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if (ssector != ssector1)
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printf("%s: C/H/S start %lu != start %lu: invalid\n",
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sname, ssector, ssector1);
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if (esector != esector1)
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printf("%s: C/H/S end %lu != end %lu: invalid\n",
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sname, esector, esector1);
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return (error);
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}
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int
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dsinit(dname, dev, strat, lp, sspp)
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char *dname;
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@ -56,6 +103,7 @@ dsinit(dname, dev, strat, lp, sspp)
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{
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struct buf *bp;
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u_char *cp;
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int dospart;
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struct dos_partition *dp;
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struct dos_partition *dp0;
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int error;
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@ -92,6 +140,9 @@ dsinit(dname, dev, strat, lp, sspp)
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bp->b_flags = B_BUSY | B_READ;
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(*strat)(bp);
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if (biowait(bp) != 0) {
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diskerr(bp, dname, "error reading partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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error = EIO;
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goto done;
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}
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@ -99,6 +150,9 @@ dsinit(dname, dev, strat, lp, sspp)
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/* Weakly verify it. */
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cp = bp->b_un.b_addr;
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if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
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diskerr(bp, dname, "invalid partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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error = EINVAL;
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goto done;
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}
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@ -113,10 +167,9 @@ dsinit(dname, dev, strat, lp, sspp)
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max_nsectors = 0;
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max_ntracks = 0;
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dp0 = (struct dos_partition *)(cp + DOSPARTOFF);
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for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
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dp++, slice++) {
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int nsectors;
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int ntracks;
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for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) {
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int nsectors;
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int ntracks;
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max_ncyls = DPCYL(dp->dp_ecyl, dp->dp_esect);
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if (max_ncyls < max_ncyls)
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@ -137,35 +190,22 @@ dsinit(dname, dev, strat, lp, sspp)
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* Check against d_secperunit if the latter is reliable.
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*/
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error = 0;
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secpercyl = max_nsectors * max_ntracks;
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for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
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dp++, slice++) {
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u_long esector;
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u_long esector1;
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u_long ssector;
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secpercyl = (u_long)max_nsectors * max_ntracks;
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for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) {
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if (dp->dp_scyl == 0 && dp->dp_shd == 0 && dp->dp_ssect == 0
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&& dp->dp_start == 0 && dp->dp_size == 0)
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continue;
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ssector = DPSECT(dp->dp_ssect) - 1 + dp->dp_shd * max_nsectors
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+ DPCYL(dp->dp_scyl, dp->dp_ssect) * secpercyl;
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esector = DPSECT(dp->dp_esect) - 1 + dp->dp_ehd * max_nsectors
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+ DPCYL(dp->dp_ecyl, dp->dp_esect) * secpercyl;
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esector1 = dp->dp_start + dp->dp_size - 1;
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sname = dsname(dname, dkunit(dev), slice, RAW_PART, partname);
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if (ssector != dp->dp_start || esector != esector1)
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error = EINVAL;
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#if 1
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else
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printf("%s: start %lu, end = %lu, size %lu: OK\n",
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sname, ssector, esector, dp->dp_size);
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if (ssector != dp->dp_start)
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printf("%s: C/H/S start %lu != start %lu: invalid\n",
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sname, ssector, dp->dp_start);
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if (esector != esector1)
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printf("%s: C/H/S end %lu != end %lu: invalid\n",
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sname, esector, esector1);
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#endif
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sname = dsname(dname, dkunit(dev), BASE_SLICE + dospart,
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RAW_PART, partname);
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/*
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* Temporarily ignore errors from this check. We could
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* simplify things by accepting the table eariler if we
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* always ignore errors here. Perhaps we should always
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* accept the table if the magic is right but not let
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* bad entries affect the geometry.
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*/
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check_part(sname, dp, (u_long)0, max_nsectors, max_ntracks);
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}
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if (error != 0)
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goto done;
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@ -192,40 +232,35 @@ dsinit(dname, dev, strat, lp, sspp)
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*/
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free(ssp, M_DEVBUF);
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ssp = malloc(offsetof(struct diskslices, dss_slices)
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+ (BASE_SLICE + NDOSPART) * sizeof *sp,
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M_DEVBUF, M_WAITOK);
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#define MAX_SLICES_SUPPORTED MAX_SLICES /* was (BASE_SLICE + NDOSPART) */
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+ MAX_SLICES_SUPPORTED * sizeof *sp, M_DEVBUF, M_WAITOK);
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*sspp = ssp;
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ssp->dss_first_bsd_slice = COMPATIBILITY_SLICE;
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sp = &ssp->dss_slices[0];
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bzero(sp, (BASE_SLICE + NDOSPART) * sizeof *sp);
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bzero(sp, MAX_SLICES_SUPPORTED * sizeof *sp);
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sp[WHOLE_DISK_SLICE].ds_size = lp->d_secperunit;
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/* Initialize normal slices. */
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sp += BASE_SLICE;
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for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
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dp++, slice++, sp++) {
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if (dp->dp_typ == DOSPTYP_386BSD
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&& ssp->dss_first_bsd_slice == COMPATIBILITY_SLICE) {
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ssp->dss_first_bsd_slice = slice;
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ssp->dss_slices[COMPATIBILITY_SLICE].ds_offset
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= dp->dp_start;
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ssp->dss_slices[COMPATIBILITY_SLICE].ds_size
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= dp->dp_size;
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}
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for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++, sp++) {
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sp->ds_offset = dp->dp_start;
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sp->ds_size = dp->dp_size;
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sp->ds_type = dp->dp_typ;
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#if 0
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lp->d_subtype |= (lp->d_subtype & 3)
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| (slice - BASE_SLICE) | DSTYPE_INDOSPART;
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lp->d_subtype |= (lp->d_subtype & 3) | dospart
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| DSTYPE_INDOSPART;
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#endif
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}
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/*
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* We're not handling extended partitions yet, so there are always
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* BASE_SLICE + NDOSPART slices altogether.
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*/
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ssp->dss_nslices = BASE_SLICE + NDOSPART;
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/* Handle extended partitions. */
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sp -= NDOSPART;
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for (dospart = 0; dospart < NDOSPART; dospart++, sp++)
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if (sp->ds_type == DOSPTYP_EXTENDED)
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extended(dname, bp->b_dev, strat, lp, ssp,
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sp->ds_offset, sp->ds_size, sp->ds_offset,
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max_nsectors, max_ntracks);
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done:
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bp->b_flags = B_INVAL | B_AGE;
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brelse(bp);
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@ -233,3 +268,98 @@ dsinit(dname, dev, strat, lp, sspp)
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error = 0;
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return (error);
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}
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void
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extended(dname, dev, strat, lp, ssp, ext_offset, ext_size, base_ext_offset,
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nsectors, ntracks)
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char *dname;
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dev_t dev;
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struct disklabel *lp;
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d_strategy_t *strat;
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struct diskslices *ssp;
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u_long ext_offset;
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u_long ext_size;
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u_long base_ext_offset;
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int nsectors;
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int ntracks;
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{
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struct buf *bp;
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u_char *cp;
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int dospart;
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struct dos_partition *dp;
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int end_slice;
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u_long ext_offsets[NDOSPART];
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u_long ext_sizes[NDOSPART];
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char partname[2];
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int slice;
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char *sname;
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struct diskslice *sp;
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/* Read extended boot record. */
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bp = geteblk((int)lp->d_secsize);
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bp->b_dev = dev;
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bp->b_blkno = ext_offset;
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bp->b_bcount = lp->d_secsize;
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bp->b_flags = B_BUSY | B_READ;
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(*strat)(bp);
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if (biowait(bp) != 0) {
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diskerr(bp, dname, "error reading extended partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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return;
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}
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/* Weakly verify it. */
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cp = bp->b_un.b_addr;
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if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
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diskerr(bp, dname, "invalid extended partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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return;
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}
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for (dospart = 0,
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dp = (struct dos_partition *)(bp->b_un.b_addr + DOSPARTOFF),
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slice = ssp->dss_nslices, sp = &ssp->dss_slices[slice];
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dospart < NDOSPART; dospart++, dp++) {
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ext_sizes[dospart] = 0;
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if (dp->dp_scyl == 0 && dp->dp_shd == 0 && dp->dp_ssect == 0
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&& dp->dp_start == 0 && dp->dp_size == 0)
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continue;
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if (dp->dp_typ == DOSPTYP_EXTENDED) {
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char buf[32];
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sname = dsname(dname, dkunit(dev), WHOLE_DISK_SLICE,
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RAW_PART, partname);
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strcpy(buf, sname);
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if (strlen(buf) < sizeof buf - 11)
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strcat(buf, "<extended>");
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check_part(buf, dp, base_ext_offset, nsectors,
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ntracks);
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ext_offsets[dospart] = base_ext_offset + dp->dp_start;
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ext_sizes[dospart] = dp->dp_size;
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} else {
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sname = dsname(dname, dkunit(dev), slice, RAW_PART,
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partname);
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check_part(sname, dp, ext_offset, nsectors, ntracks);
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if (slice >= MAX_SLICES) {
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printf("%s: too many slices\n", sname);
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slice++;
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continue;
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}
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sp->ds_offset = ext_offset + dp->dp_start;
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sp->ds_size = dp->dp_size;
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sp->ds_type = dp->dp_typ;
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ssp->dss_nslices++;
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slice++;
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sp++;
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}
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}
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/* If we found any more slices, recursively find all the subslices. */
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for (dospart = 0; dospart < NDOSPART; dospart++)
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if (ext_sizes[dospart] != 0)
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extended(dname, dev, strat, lp, ssp,
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ext_offsets[dospart], ext_sizes[dospart],
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base_ext_offset, nsectors, ntracks);
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}
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@ -35,17 +35,64 @@
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*
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* from: @(#)ufs_disksubr.c 7.16 (Berkeley) 5/4/91
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* from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $
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* $Id: diskslice_machdep.c,v 1.5 1995/02/21 08:37:09 bde Exp $
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* $Id: diskslice_machdep.c,v 1.6 1995/02/22 22:46:36 bde Exp $
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*/
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#include <stddef.h>
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#define DOSPTYP_EXTENDED 5
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#include <sys/diskslice.h>
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#include <sys/malloc.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#define TRACE(str) do { if (dsi_debug) printf str; } while (0)
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|
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static volatile u_char dsi_debug;
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|
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static int check_part __P((char *sname, struct dos_partition *dp,
|
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u_long offset, int nsectors, int ntracks));
|
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static void extended __P((char *dname, dev_t dev, d_strategy_t *strat,
|
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struct disklabel *lp, struct diskslices *ssp,
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u_long ext_offset, u_long ext_size,
|
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u_long base_ext_offset, int nsectors, int ntracks));
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static int
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check_part(sname, dp, offset, nsectors, ntracks)
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char *sname;
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struct dos_partition *dp;
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u_long offset;
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int nsectors;
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int ntracks;
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{
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int error;
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u_long esector;
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u_long esector1;
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u_long secpercyl;
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u_long ssector;
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u_long ssector1;
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secpercyl = (u_long)nsectors * ntracks;
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ssector = DPSECT(dp->dp_ssect) - 1 + dp->dp_shd * nsectors
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+ DPCYL(dp->dp_scyl, dp->dp_ssect) * secpercyl;
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ssector1 = offset + dp->dp_start;
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esector = DPSECT(dp->dp_esect) - 1 + dp->dp_ehd * nsectors
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+ DPCYL(dp->dp_ecyl, dp->dp_esect) * secpercyl;
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esector1 = ssector1 + dp->dp_size - 1;
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error = ssector == ssector1 && esector == esector1 ? 0 : EINVAL;
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printf("%s: start %lu, end = %lu, size %lu%s\n",
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sname, ssector, esector, dp->dp_size, error ? "" : ": OK");
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if (ssector != ssector1)
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printf("%s: C/H/S start %lu != start %lu: invalid\n",
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sname, ssector, ssector1);
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if (esector != esector1)
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printf("%s: C/H/S end %lu != end %lu: invalid\n",
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sname, esector, esector1);
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return (error);
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}
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int
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dsinit(dname, dev, strat, lp, sspp)
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char *dname;
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@ -56,6 +103,7 @@ dsinit(dname, dev, strat, lp, sspp)
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{
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struct buf *bp;
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u_char *cp;
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int dospart;
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struct dos_partition *dp;
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struct dos_partition *dp0;
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int error;
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@ -92,6 +140,9 @@ dsinit(dname, dev, strat, lp, sspp)
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bp->b_flags = B_BUSY | B_READ;
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(*strat)(bp);
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if (biowait(bp) != 0) {
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diskerr(bp, dname, "error reading partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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error = EIO;
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goto done;
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}
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@ -99,6 +150,9 @@ dsinit(dname, dev, strat, lp, sspp)
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/* Weakly verify it. */
|
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cp = bp->b_un.b_addr;
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if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
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diskerr(bp, dname, "invalid partition table",
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LOG_PRINTF, 0, lp);
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printf("\n");
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error = EINVAL;
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goto done;
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}
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@ -113,10 +167,9 @@ dsinit(dname, dev, strat, lp, sspp)
|
||||
max_nsectors = 0;
|
||||
max_ntracks = 0;
|
||||
dp0 = (struct dos_partition *)(cp + DOSPARTOFF);
|
||||
for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
|
||||
dp++, slice++) {
|
||||
int nsectors;
|
||||
int ntracks;
|
||||
for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++) {
|
||||
int nsectors;
|
||||
int ntracks;
|
||||
|
||||
max_ncyls = DPCYL(dp->dp_ecyl, dp->dp_esect);
|
||||
if (max_ncyls < max_ncyls)
|
||||
@ -137,35 +190,22 @@ dsinit(dname, dev, strat, lp, sspp)
|
||||
* Check against d_secperunit if the latter is reliable.
|
||||
*/
|
||||
error = 0;
|
||||
secpercyl = max_nsectors * max_ntracks;
|
||||
for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
|
||||
dp++, slice++) {
|
||||
u_long esector;
|
||||
u_long esector1;
|
||||
u_long ssector;
|
||||
|
||||
secpercyl = (u_long)max_nsectors * max_ntracks;
|
||||
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;
|
||||
ssector = DPSECT(dp->dp_ssect) - 1 + dp->dp_shd * max_nsectors
|
||||
+ DPCYL(dp->dp_scyl, dp->dp_ssect) * secpercyl;
|
||||
esector = DPSECT(dp->dp_esect) - 1 + dp->dp_ehd * max_nsectors
|
||||
+ DPCYL(dp->dp_ecyl, dp->dp_esect) * secpercyl;
|
||||
esector1 = dp->dp_start + dp->dp_size - 1;
|
||||
sname = dsname(dname, dkunit(dev), slice, RAW_PART, partname);
|
||||
if (ssector != dp->dp_start || esector != esector1)
|
||||
error = EINVAL;
|
||||
#if 1
|
||||
else
|
||||
printf("%s: start %lu, end = %lu, size %lu: OK\n",
|
||||
sname, ssector, esector, dp->dp_size);
|
||||
if (ssector != dp->dp_start)
|
||||
printf("%s: C/H/S start %lu != start %lu: invalid\n",
|
||||
sname, ssector, dp->dp_start);
|
||||
if (esector != esector1)
|
||||
printf("%s: C/H/S end %lu != end %lu: invalid\n",
|
||||
sname, esector, esector1);
|
||||
#endif
|
||||
sname = dsname(dname, 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, (u_long)0, max_nsectors, max_ntracks);
|
||||
}
|
||||
if (error != 0)
|
||||
goto done;
|
||||
@ -192,40 +232,35 @@ dsinit(dname, dev, strat, lp, sspp)
|
||||
*/
|
||||
free(ssp, M_DEVBUF);
|
||||
ssp = malloc(offsetof(struct diskslices, dss_slices)
|
||||
+ (BASE_SLICE + NDOSPART) * sizeof *sp,
|
||||
M_DEVBUF, M_WAITOK);
|
||||
#define MAX_SLICES_SUPPORTED MAX_SLICES /* was (BASE_SLICE + NDOSPART) */
|
||||
+ MAX_SLICES_SUPPORTED * sizeof *sp, M_DEVBUF, M_WAITOK);
|
||||
*sspp = ssp;
|
||||
ssp->dss_first_bsd_slice = COMPATIBILITY_SLICE;
|
||||
sp = &ssp->dss_slices[0];
|
||||
bzero(sp, (BASE_SLICE + NDOSPART) * sizeof *sp);
|
||||
bzero(sp, MAX_SLICES_SUPPORTED * sizeof *sp);
|
||||
sp[WHOLE_DISK_SLICE].ds_size = lp->d_secperunit;
|
||||
|
||||
/* Initialize normal slices. */
|
||||
sp += BASE_SLICE;
|
||||
for (dp = dp0, slice = BASE_SLICE; slice < BASE_SLICE + NDOSPART;
|
||||
dp++, slice++, sp++) {
|
||||
if (dp->dp_typ == DOSPTYP_386BSD
|
||||
&& ssp->dss_first_bsd_slice == COMPATIBILITY_SLICE) {
|
||||
ssp->dss_first_bsd_slice = slice;
|
||||
ssp->dss_slices[COMPATIBILITY_SLICE].ds_offset
|
||||
= dp->dp_start;
|
||||
ssp->dss_slices[COMPATIBILITY_SLICE].ds_size
|
||||
= dp->dp_size;
|
||||
}
|
||||
for (dospart = 0, dp = dp0; dospart < NDOSPART; dospart++, dp++, sp++) {
|
||||
sp->ds_offset = dp->dp_start;
|
||||
sp->ds_size = dp->dp_size;
|
||||
sp->ds_type = dp->dp_typ;
|
||||
#if 0
|
||||
lp->d_subtype |= (lp->d_subtype & 3)
|
||||
| (slice - BASE_SLICE) | DSTYPE_INDOSPART;
|
||||
lp->d_subtype |= (lp->d_subtype & 3) | dospart
|
||||
| DSTYPE_INDOSPART;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* We're not handling extended partitions yet, so there are always
|
||||
* BASE_SLICE + NDOSPART slices altogether.
|
||||
*/
|
||||
ssp->dss_nslices = BASE_SLICE + NDOSPART;
|
||||
|
||||
/* Handle extended partitions. */
|
||||
sp -= NDOSPART;
|
||||
for (dospart = 0; dospart < NDOSPART; dospart++, sp++)
|
||||
if (sp->ds_type == DOSPTYP_EXTENDED)
|
||||
extended(dname, bp->b_dev, strat, lp, ssp,
|
||||
sp->ds_offset, sp->ds_size, sp->ds_offset,
|
||||
max_nsectors, max_ntracks);
|
||||
|
||||
done:
|
||||
bp->b_flags = B_INVAL | B_AGE;
|
||||
brelse(bp);
|
||||
@ -233,3 +268,98 @@ dsinit(dname, dev, strat, lp, sspp)
|
||||
error = 0;
|
||||
return (error);
|
||||
}
|
||||
|
||||
void
|
||||
extended(dname, dev, strat, lp, ssp, ext_offset, ext_size, base_ext_offset,
|
||||
nsectors, ntracks)
|
||||
char *dname;
|
||||
dev_t dev;
|
||||
struct disklabel *lp;
|
||||
d_strategy_t *strat;
|
||||
struct diskslices *ssp;
|
||||
u_long ext_offset;
|
||||
u_long ext_size;
|
||||
u_long base_ext_offset;
|
||||
int nsectors;
|
||||
int ntracks;
|
||||
{
|
||||
struct buf *bp;
|
||||
u_char *cp;
|
||||
int dospart;
|
||||
struct dos_partition *dp;
|
||||
int end_slice;
|
||||
u_long ext_offsets[NDOSPART];
|
||||
u_long ext_sizes[NDOSPART];
|
||||
char partname[2];
|
||||
int slice;
|
||||
char *sname;
|
||||
struct diskslice *sp;
|
||||
|
||||
/* 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_flags = B_BUSY | B_READ;
|
||||
(*strat)(bp);
|
||||
if (biowait(bp) != 0) {
|
||||
diskerr(bp, dname, "error reading extended partition table",
|
||||
LOG_PRINTF, 0, lp);
|
||||
printf("\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Weakly verify it. */
|
||||
cp = bp->b_un.b_addr;
|
||||
if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
|
||||
diskerr(bp, dname, "invalid extended partition table",
|
||||
LOG_PRINTF, 0, lp);
|
||||
printf("\n");
|
||||
return;
|
||||
}
|
||||
|
||||
for (dospart = 0,
|
||||
dp = (struct dos_partition *)(bp->b_un.b_addr + DOSPARTOFF),
|
||||
slice = ssp->dss_nslices, sp = &ssp->dss_slices[slice];
|
||||
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) {
|
||||
char buf[32];
|
||||
|
||||
sname = dsname(dname, dkunit(dev), WHOLE_DISK_SLICE,
|
||||
RAW_PART, partname);
|
||||
strcpy(buf, sname);
|
||||
if (strlen(buf) < sizeof buf - 11)
|
||||
strcat(buf, "<extended>");
|
||||
check_part(buf, dp, base_ext_offset, nsectors,
|
||||
ntracks);
|
||||
ext_offsets[dospart] = base_ext_offset + dp->dp_start;
|
||||
ext_sizes[dospart] = dp->dp_size;
|
||||
} else {
|
||||
sname = dsname(dname, dkunit(dev), slice, RAW_PART,
|
||||
partname);
|
||||
check_part(sname, dp, ext_offset, nsectors, ntracks);
|
||||
if (slice >= MAX_SLICES) {
|
||||
printf("%s: too many slices\n", sname);
|
||||
slice++;
|
||||
continue;
|
||||
}
|
||||
sp->ds_offset = ext_offset + dp->dp_start;
|
||||
sp->ds_size = dp->dp_size;
|
||||
sp->ds_type = dp->dp_typ;
|
||||
ssp->dss_nslices++;
|
||||
slice++;
|
||||
sp++;
|
||||
}
|
||||
}
|
||||
|
||||
/* If we found any more slices, recursively find all the subslices. */
|
||||
for (dospart = 0; dospart < NDOSPART; dospart++)
|
||||
if (ext_sizes[dospart] != 0)
|
||||
extended(dname, dev, strat, lp, ssp,
|
||||
ext_offsets[dospart], ext_sizes[dospart],
|
||||
base_ext_offset, nsectors, ntracks);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user