commit 91d7cc5f18dfdc112b6c0bb856e2217c1ecc0007
Author: Tomohiro Kusumi <[email protected]>
Date: Mon Jan 13 14:13:53 2020 +0900
sbin/fsck_msdosfs: Correct off-by-two issue when determining FAT type.
In the code we used NumClusters as the upper (non-inclusive) boundary
of valid cluster number, so the actual value was 2 (CLUST_FIRST) more
than the real number of clusters. This causes a FAT16 media with
65524 clusters be treated as FAT32 and might affect FAT12 media with
4084 clusters as well.
To fix this, we increment NumClusters by CLUST_FIRST after the type
determination.
from freebsd/freebsd@27b822d4d61893d02ca0bc7163fa323331c497fe
Summary of changes:
sbin/fsck_msdosfs/boot.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/91d7cc5f18dfdc112b6c0bb856e2217c1ecc0007
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DragonFly BSD source repository
