diff options
| -rw-r--r-- | usr.bin/bsdiff/bsdiff/bsdiff.1 | 19 | ||||
| -rw-r--r-- | usr.bin/bsdiff/bspatch/bspatch.1 | 21 |
2 files changed, 40 insertions, 0 deletions
diff --git a/usr.bin/bsdiff/bsdiff/bsdiff.1 b/usr.bin/bsdiff/bsdiff/bsdiff.1 index 5c608b4..4ceb9ed 100644 --- a/usr.bin/bsdiff/bsdiff/bsdiff.1 +++ b/usr.bin/bsdiff/bsdiff/bsdiff.1 @@ -65,5 +65,24 @@ an absolute minimum working set size of 8 times the size of .Ar oldfile . .Sh SEE ALSO .Xr bspatch 1 +.Sh BUGS +The +.Nm +utility does not store the hashes of +.Ar oldfile +or +.Ar newfile +in +.Ar patchfile . +As a result, it is possible to apply a patch to the wrong file; this +will usually produce garbage. +It is recommended that users of +.Nm +store the hashes of +.Ar oldfile +and +.Ar newfile +and compare against them before and after applying +.Ar patchfile . .Sh AUTHORS .An Colin Percival Aq cperciva@FreeBSD.org diff --git a/usr.bin/bsdiff/bspatch/bspatch.1 b/usr.bin/bsdiff/bspatch/bspatch.1 index 894bc50..29b8db3 100644 --- a/usr.bin/bsdiff/bspatch/bspatch.1 +++ b/usr.bin/bsdiff/bspatch/bspatch.1 @@ -61,5 +61,26 @@ but can tolerate a very small working set without a dramatic loss of performance. .Sh SEE ALSO .Xr bsdiff 1 +.Sh BUGS +The +.Nm +utility does not verify that +.Ar oldfile +is the correct source file for +.Ar patchfile . +Attempting to apply a patch to the wrong file will usually produce +garbage; consequently it is strongly recommended that users of +.Nm +verify that +.Ar oldfile +matches the source file from which +.Ar patchfile +was built, by comparing cryptographic hashes, for example. +Users may also wish to verify after running +.Nm +that +.Ar newfile +matches the target file from which +.Ar was built. .Sh AUTHORS .An Colin Percival Aq cperciva@FreeBSD.org |
