Module Name: src Committed By: christos Date: Sat Jan 11 16:29:07 UTC 2020
Modified Files: src/sbin/fsck_msdos: boot.c Log Message: Don't add the 2 reserved clusters before we determine if we using fat16/fat32. >From FreeBSD: https://reviews.freebsd.org/D23082: 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. To generate a diff of this commit: cvs rdiff -u -r1.21 -r1.22 src/sbin/fsck_msdos/boot.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.