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Adjust the logic a bit so we `nif' can't overflow.

This commit is contained in:
mycroft 1996-05-21 16:58:12 +00:00
parent 30ec7d2c44
commit 6dc46f6326
1 changed files with 5 additions and 4 deletions
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9
sbin/fsck_ffs/inode.c
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@ -1,4 +1,4 @@
/* $NetBSD: inode.c,v 1.17 1995/12/17 06:03:36 thorpej Exp $ */
/* $NetBSD: inode.c,v 1.18 1996/05/21 16:58:12 mycroft Exp $ */
/*
* Copyright (c) 1980, 1986, 1993
@ -37,7 +37,7 @@
#if 0
static char sccsid[] = "@(#)inode.c 8.5 (Berkeley) 2/8/95";
#else
static char rcsid[] = "$NetBSD: inode.c,v 1.17 1995/12/17 06:03:36 thorpej Exp $";
static char rcsid[] = "$NetBSD: inode.c,v 1.18 1996/05/21 16:58:12 mycroft Exp $";
#endif
#endif /* not lint */
@ -140,9 +140,10 @@ iblock(idesc, ilevel, isize)
ilevel--;
for (sizepb = sblock.fs_bsize, i = 0; i < ilevel; i++)
sizepb *= NINDIR(&sblock);
nif = howmany(isize , sizepb);
if (nif > NINDIR(&sblock))
if (isize > sizepb * NINDIR(&sblock))
nif = NINDIR(&sblock);
else
nif = howmany(isize, sizepb);
if (idesc->id_func == pass1check && nif < NINDIR(&sblock)) {
aplim = &bp->b_un.b_indir[NINDIR(&sblock)];
for (ap = &bp->b_un.b_indir[nif]; ap < aplim; ap++) {