diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 1999-01-08 04:29:12 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 1999-01-08 04:29:12 +0000 |
| commit | 35c2bff255654ea2902e9b996e5711d755659967 (patch) | |
| tree | d3bb71382e3fd610b239be8889b28e5745ff07db /sys/arch/pmax | |
| parent | 686c4b6f344a5a27aa0ff9967507d7d8aea15be1 (diff) | |
check for lp->d_secpercyl == 0) in bounds_check_with_label()
Diffstat (limited to 'sys/arch/pmax')
| -rw-r--r-- | sys/arch/pmax/pmax/disksubr.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/arch/pmax/pmax/disksubr.c b/sys/arch/pmax/pmax/disksubr.c index be0c0a0edff..ca225f0de97 100644 --- a/sys/arch/pmax/pmax/disksubr.c +++ b/sys/arch/pmax/pmax/disksubr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: disksubr.c,v 1.15 1998/10/04 20:02:58 millert Exp $ */ +/* $OpenBSD: disksubr.c,v 1.16 1999/01/08 04:29:09 millert Exp $ */ /* $NetBSD: disksubr.c,v 1.14 1997/01/15 00:55:43 jonathan Exp $ */ /* @@ -333,6 +333,12 @@ bounds_check_with_label(bp, lp, osdep, wlabel) LABELSECTOR; int sz = howmany(bp->b_bcount, DEV_BSIZE); + /* avoid division by zero */ + if (lp->d_secpercyl == 0) { + bp->b_error = EINVAL; + goto bad; + } + /* overwriting disk label ? */ /* XXX should also protect bootstrap in first 8K */ if (bp->b_blkno + blockpersec(p->p_offset, lp) <= labelsect && |