Phonet: reject unsupported sendmsg/recvmsg flags

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/phonet/datagram.c b/net/phonet/datagram.c
index 67f072e..387197b 100644 (file)
--- a/net/phonet/datagram.c
+++ b/net/phonet/datagram.c
@@ -75,7 +75,8 @@ static int pn_sendmsg(struct kiocb *iocb, struct sock *sk,
        struct sk_buff *skb;
        int err;
 
-       if (msg->msg_flags & MSG_OOB)
+       if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL|
+                               MSG_CMSG_COMPAT))
                return -EOPNOTSUPP;
 
        if (msg->msg_name == NULL)
@@ -119,7 +120,8 @@ static int pn_recvmsg(struct kiocb *iocb, struct sock *sk,
        int rval = -EOPNOTSUPP;
        int copylen;
 
-       if (flags & MSG_OOB)
+       if (flags & ~(MSG_PEEK|MSG_TRUNC|MSG_DONTWAIT|MSG_NOSIGNAL|
+                       MSG_CMSG_COMPAT))
                goto out_nofree;
 
        if (addr_len)

diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 72db27e..360cf37 100644 (file)
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -860,7 +860,9 @@ static int pep_sendmsg(struct kiocb *iocb, struct sock *sk,
        int flags = msg->msg_flags;
        int err, done;
 
-       if (msg->msg_flags & MSG_OOB || !(msg->msg_flags & MSG_EOR))
+       if ((msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL|
+                               MSG_CMSG_COMPAT)) ||
+                       !(msg->msg_flags & MSG_EOR))
                return -EOPNOTSUPP;
 
        skb = sock_alloc_send_skb(sk, MAX_PNPIPE_HEADER + len,
@@ -981,6 +983,10 @@ static int pep_recvmsg(struct kiocb *iocb, struct sock *sk,
        struct sk_buff *skb;
        int err;
 
+       if (flags & ~(MSG_OOB|MSG_PEEK|MSG_TRUNC|MSG_DONTWAIT|MSG_WAITALL|
+                       MSG_NOSIGNAL|MSG_CMSG_COMPAT))
+               return -EOPNOTSUPP;
+
        if (unlikely(1 << sk->sk_state & (TCPF_LISTEN | TCPF_CLOSE)))
                return -ENOTCONN;
 
@@ -988,6 +994,8 @@ static int pep_recvmsg(struct kiocb *iocb, struct sock *sk,
                /* Dequeue and acknowledge control request */
                struct pep_sock *pn = pep_sk(sk);
 
+               if (flags & MSG_PEEK)
+                       return -EOPNOTSUPP;
                skb = skb_dequeue(&pn->ctrlreq_queue);
                if (skb) {
                        pep_ctrlreq_error(sk, skb, PN_PIPE_NO_ERROR,