diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-09-28 09:44:11 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-09-28 09:44:11 +0000 |
| commit | 190461b0db71c02c4160a2ad4417524983153457 (patch) | |
| tree | 486c9ad0aafd344140217af98044e532b4ff1d52 /sys/arch/i386 | |
| parent | 0d90bd340b8e7dc5ee12731eb886470e5f416d74 (diff) | |
if no disklabel, fake the MBR partitions at m/n/o/p
Diffstat (limited to 'sys/arch/i386')
| -rw-r--r-- | sys/arch/i386/i386/disksubr.c | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/sys/arch/i386/i386/disksubr.c b/sys/arch/i386/i386/disksubr.c index f04fc7183e7..ec0cecaa397 100644 --- a/sys/arch/i386/i386/disksubr.c +++ b/sys/arch/i386/i386/disksubr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: disksubr.c,v 1.7 1996/09/26 21:08:53 niklas Exp $ */ +/* $OpenBSD: disksubr.c,v 1.8 1996/09/28 09:44:10 deraadt Exp $ */ /* $NetBSD: disksubr.c,v 1.21 1996/05/03 19:42:03 christos Exp $ */ /* @@ -135,29 +135,46 @@ readdisklabel(dev, strat, lp, osdep) ourpart = i; if (ourpart != -1) { - dp = &dp[i]; + dp2 = &dp[ourpart]; /* - * This is our MBR partition. - * need sector address for SCSI/IDE, - * cylinder for ESDI/ST506/RLL + * This is our MBR partition. need sector address + * for SCSI/IDE, cylinder for ESDI/ST506/RLL */ - dospartoff = dp->dp_start; - cyl = DPCYL(dp->dp_scyl, dp->dp_ssect); + dospartoff = dp2->dp_start; + cyl = DPCYL(dp2->dp_scyl, dp2->dp_ssect); /* XXX build a temporary disklabel */ - lp->d_partitions[0].p_size = dp->dp_size; - lp->d_partitions[0].p_offset = dp->dp_start; - lp->d_partitions[RAW_PART].p_size = dp->dp_size; - lp->d_partitions[RAW_PART].p_offset = dp->dp_start; + lp->d_partitions[0].p_size = dp2->dp_size; + lp->d_partitions[0].p_offset = dp2->dp_start; + lp->d_partitions[RAW_PART].p_size = dp2->dp_size; + lp->d_partitions[RAW_PART].p_offset = dp2->dp_start; if (lp->d_ntracks == 0) - lp->d_ntracks = dp->dp_ehd + 1; + lp->d_ntracks = dp2->dp_ehd + 1; if (lp->d_nsectors == 0) - lp->d_nsectors = DPSECT(dp->dp_esect); + lp->d_nsectors = DPSECT(dp2->dp_esect); if (lp->d_secpercyl == 0) lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; } + + /* + * In case the disklabel read below fails, we want to provide + * a fake label in which m/n/o/p are MBR partitions 0/1/2/3 + */ + for (dp2=dp, i=0; i < NDOSPART; i++, dp2++) { + lp->d_partitions[12+i].p_size = dp2->dp_size; + lp->d_partitions[12+i].p_offset = dp2->dp_start; + for (ip = fat_types; *ip != -1; ip++) { + if (dp2->dp_typ != *ip) + continue; + lp->d_partitions[12+i].p_fstype = + FS_MSDOS; + } + } + lp->d_bbsize = 8192; + lp->d_sbsize = 64*1024; /* XXX ? */ + lp->d_npartitions = MAXPARTITIONS; } /* next, dig out disk label */ |