NFS: Send valid mode bits to the server

 inode->i_mode contains a lot more than just the mode bits. Make sure that
 we mask away this extra stuff in SETATTR calls to the server.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs3xdr.c

@@ -182,7 +182,7 @@ xdr_encode_sattr(u32 *p, struct iattr *attr)
 {
 	if (attr->ia_valid & ATTR_MODE) {
 		*p++ = xdr_one;
-		*p++ = htonl(attr->ia_mode);
+		*p++ = htonl(attr->ia_mode & S_IALLUGO);
 	} else {
 		*p++ = xdr_zero;
 	}

fs/nfs/nfs4xdr.c

@@ -566,7 +566,7 @@ static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const s
 	}
 	if (iap->ia_valid & ATTR_MODE) {
 		bmval1 |= FATTR4_WORD1_MODE;
-		WRITE32(iap->ia_mode);
+		WRITE32(iap->ia_mode & S_IALLUGO);
 	}
 	if (iap->ia_valid & ATTR_UID) {
 		bmval1 |= FATTR4_WORD1_OWNER;

fs/nfs/proc.c

@@ -111,6 +111,9 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 	};
 	int	status;
 
+	/* Mask out the non-modebit related stuff from attr->ia_mode */
+	sattr->ia_mode &= S_IALLUGO;
+
 	dprintk("NFS call  setattr\n");
 	nfs_fattr_init(fattr);
 	status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0);