unix/dgram: fix peeking with an offset larger than data in queue
authorBenjamin Poirier <bpoirier@suse.de>
Mon, 29 Apr 2013 11:42:13 +0000 (11:42 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 30 Apr 2013 04:43:54 +0000 (00:43 -0400)
commit39cc86130bc045d87f525ce7742da308ff757cec
tree28e803dce3877b9f1eb7c8ad74fe58c29764a422
parentadd05ad4e9f5c4efee9b98535db5efa32b0d0492
unix/dgram: fix peeking with an offset larger than data in queue

Currently, peeking on a unix datagram socket with an offset larger than len of
the data in the sk receive queue returns immediately with bogus data. That's
because *off is not reset between each skb_queue_walk().

This patch fixes this so that the behavior is the same as peeking with no
offset on an empty queue: the caller blocks.

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/datagram.c