net: Make setsockopt() optlen be unsigned.
This provides safety against negative optlen at the type
level instead of depending upon (sometimes non-trivial)
checks against this sprinkled all over the the place, in
each and every implementation.
Based upon work done by Arjan van de Ven and feedback
from Linus Torvalds.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
index 01ce241..4e49021 100644
--- a/drivers/atm/horizon.c
+++ b/drivers/atm/horizon.c
@@ -2590,7 +2590,7 @@
}
static int hrz_setsockopt (struct atm_vcc * atm_vcc, int level, int optname,
- void *optval, int optlen) {
+ void *optval, unsigned int optlen) {
hrz_dev * dev = HRZ_DEV(atm_vcc->dev);
PRINTD (DBG_FLOW|DBG_VCC, "hrz_setsockopt");
switch (level) {