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authorRémi Denis-Courmont <remi.denis-courmont@nokia.com>2010-01-04 02:02:49 +0000
committerDavid S. Miller <davem@davemloft.net>2010-01-07 00:24:55 -0800
commit82ecbcb9c6b5257929968d5b0ed536772a9b4ac5 (patch)
treec147c743bc284709f87ba677048757a3b4547357 /net/phonet
parentPhonet: zero-copy GPRS TX (diff)
downloadlinux-dev-82ecbcb9c6b5257929968d5b0ed536772a9b4ac5.tar.xz
linux-dev-82ecbcb9c6b5257929968d5b0ed536772a9b4ac5.zip
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>
Diffstat (limited to 'net/phonet')
-rw-r--r--net/phonet/datagram.c6
-rw-r--r--net/phonet/pep.c10
2 files changed, 13 insertions, 3 deletions
diff --git a/net/phonet/datagram.c b/net/phonet/datagram.c
index 67f072e94d00..387197b579b1 100644
--- 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 72db27e3fc06..360cf377693e 100644
--- 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,