net/9p: fix statsize inside twstat

stat structures contain a size prefix.  In our twstat messages
we were including the size of the size prefix in the prefix, which is not
what the protocol wants, and Inferno servers would complain.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

diff --git a/net/9p/client.c b/net/9p/client.c
index 90a2eb926d19adabb5648e72f93e38177aedc143..a2e2d61b903b42aaea9a1fbb3d4312d42921e09c 100644 (file)
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1222,10 +1222,11 @@ static int p9_client_statsize(struct p9_wstat *wst, int optional)
 {
        int ret;
 
+       /* NOTE: size shouldn't include its own length */
        /* size[2] type[2] dev[4] qid[13] */
        /* mode[4] atime[4] mtime[4] length[8]*/
        /* name[s] uid[s] gid[s] muid[s] */
-       ret = 2+2+4+13+4+4+4+8+2+2+2+2;
+       ret = 2+4+13+4+4+4+8+2+2+2+2;
 
        if (wst->name)
                ret += strlen(wst->name);
@@ -1266,7 +1267,7 @@ int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst)
                wst->name, wst->uid, wst->gid, wst->muid, wst->extension,
                wst->n_uid, wst->n_gid, wst->n_muid);
 
-       req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size, wst);
+       req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);
        if (IS_ERR(req)) {
                err = PTR_ERR(req);
                goto error;