Module Name: src
Committed By: sborrill
Date: Thu Sep 28 17:07:20 UTC 2017
Modified Files:
src/sbin/resize_ffs: resize_ffs.c
Log Message:
Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@
For example:
# df /data
Filesystem 1K-blocks Used Avail %Cap Mounted on
/dev/ccd0d -19974939099004 -19982708701532 -737868756431824584 0% /data
# dumpfs -s /dev/rccd0d
file system: /dev/rccd0d
format FFSv2
endian little-endian
location 65536 (-b 128)
magic 19540119 time Thu Sep 28 13:18:10 2017
superblock location 65536 id [ 595fa4a5 3363fe37 ]
cylgrp dynamic inodes FFSv2 sblock FFSv2 fslevel 5
nbfree 242773148 ndir 211185 nifree 650798800 nffree
215448
ncg 13933 size 2647654400 blocks -4993734774751
bsize 32768 shift 15 mask 0xffff8000
fsize 4096 shift 12 mask 0xfffff000
frag 8 shift 3 fsbtodb 3
bpg 23754 fpg 190032 ipg 46848
minfree 5% optim time maxcontig 2 maxbpg 4096
symlinklen 120 contigsumsize 2
maxfilesize 0x000800800805ffff
nindir 4096 inopb 128
avgfilesize 16384 avgfpdir 64
sblkno 24 cblkno 32 iblkno 40 dblkno 2968
sbsize 4096 cgsize 32768
csaddr 35792 cssize 225280
cgrotor 0 fmod 0 ronly 0 clean 0x01
wapbl version 0x1 location 2 flags 0x0
wapbl loc0 6354693888 loc1 131072 loc2 512 loc3 3
flags none
fsmnt /data
volname swuid 0
To generate a diff of this commit:
cvs rdiff -u -r1.47 -r1.48 src/sbin/resize_ffs/resize_ffs.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
