[NET]: Add a dev_ioctl() fallback to sock_ioctl()
Currently all network protocols need to call dev_ioctl as the default
fallback in their ioctl implementations. This patch adds a fallback
to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
This way all the procotol ioctl handlers can be simplified and we don't
need to export dev_ioctl.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 36a6306..966a071 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -777,10 +777,10 @@
err = devinet_ioctl(cmd, (void __user *)arg);
break;
default:
- if (!sk->sk_prot->ioctl ||
- (err = sk->sk_prot->ioctl(sk, cmd, arg)) ==
- -ENOIOCTLCMD)
- err = dev_ioctl(cmd, (void __user *)arg);
+ if (sk->sk_prot->ioctl)
+ err = sk->sk_prot->ioctl(sk, cmd, arg);
+ else
+ err = -ENOIOCTLCMD;
break;
}
return err;