net: Cap number of elements for sendmmsg
commit98382f419f32d2c12d021943b87dea555677144b
authorAnton Blanchard <anton@samba.org>
Thu, 4 Aug 2011 14:07:39 +0000 (4 14:07 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 5 Aug 2011 10:31:03 +0000 (5 03:31 -0700)
treed07b99ec8eec119b53ddc2223de9027d7a8c0263
parent728ffb86f10873aaf4abd26dde691ee40ae731fe
net: Cap number of elements for sendmmsg

To limit the amount of time we can spend in sendmmsg, cap the
number of elements to UIO_MAXIOV (currently 1024).

For error handling an application using sendmmsg needs to retry at
the first unsent message, so capping is simpler and requires less
application logic than returning EINVAL.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable <stable@kernel.org> [3.0+]
Signed-off-by: David S. Miller <davem@davemloft.net>
net/socket.c