diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2007-06-10 16:37:10 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2007-06-10 16:37:10 +0000 |
| commit | 56f99c60f29823b46202674837fe805b4b1acb70 (patch) | |
| tree | d7ae5820d13e40f48701dc4b00829c8ddf0a195c /sys | |
| parent | d4c7bc29b9e295e2a35a6b4aa36526d4f5028ba2 (diff) | |
when we change fields in the label to version 1, fix the checksum (but only
if it was ok beforehands)
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/subr_disk.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sys/kern/subr_disk.c b/sys/kern/subr_disk.c index f133fbc5bb7..5e2f9064225 100644 --- a/sys/kern/subr_disk.c +++ b/sys/kern/subr_disk.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_disk.c,v 1.58 2007/06/09 23:35:23 krw Exp $ */ +/* $OpenBSD: subr_disk.c,v 1.59 2007/06/10 16:37:09 deraadt Exp $ */ /* $NetBSD: subr_disk.c,v 1.17 1996/03/16 23:17:08 christos Exp $ */ /* @@ -191,11 +191,15 @@ disklabeltokernlabel(struct disklabel *lp) { struct __partitionv0 *v0pp = (struct __partitionv0 *)lp->d_partitions; struct partition *pp = lp->d_partitions; - int i, oversion = lp->d_version; + int i, oversion = lp->d_version, changed = 0, okbefore = 0; + + if (dkcksum(lp) == 0) + okbefore = 1; if (oversion == 0) { lp->d_version = 1; lp->d_secperunith = 0; + changed = 1; } for (i = 0; i < MAXPARTITIONS; i++, pp++, v0pp++) { @@ -229,8 +233,15 @@ disklabeltokernlabel(struct disklabel *lp) } /* XXX this should not be here */ - DL_SETPOFFSET(&lp->d_partitions[RAW_PART], 0); - DL_SETPSIZE(&lp->d_partitions[RAW_PART], DL_GETDSIZE(lp)); + if (DL_GETPOFFSET(&lp->d_partitions[RAW_PART]) != 0) { + DL_SETPOFFSET(&lp->d_partitions[RAW_PART], 0); + DL_SETPSIZE(&lp->d_partitions[RAW_PART], DL_GETDSIZE(lp)); + changed = 1; + } + if (changed && okbefore) { + lp->d_checksum = 0; + lp->d_checksum = dkcksum(lp); + } } /* |