diff options
| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-01-30 06:28:42 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-01-30 06:28:42 +0100 |
| commit | 3787f721c1efe19c0502dc7e429459804100757d (patch) | |
| tree | 2f13a3f87496668b131eff4025d62b8dfdf4ac2e /sys/src/cmd/disk | |
| parent | dbbbff89151794c838319e831254bcff6b3dbbcf (diff) | |
9p message size too small
various fileservers do not check if the message size is too small
(they subtract IOHDRSZ later from it to calculate iounit) which
can overflow.
Diffstat (limited to 'sys/src/cmd/disk')
| -rw-r--r-- | sys/src/cmd/disk/kfs/9p2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/src/cmd/disk/kfs/9p2.c b/sys/src/cmd/disk/kfs/9p2.c index de99ebd8f..90510a409 100644 --- a/sys/src/cmd/disk/kfs/9p2.c +++ b/sys/src/cmd/disk/kfs/9p2.c @@ -15,6 +15,9 @@ seterror(Fcall *ou, int err) static int fsversion(Chan* chan, Fcall* f, Fcall* r) { + if(f->msize < 256) + return Econvert; + if(f->msize < MSIZE) r->msize = f->msize; else |