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authorPetr Vandrovec <petr@vandrovec.name>2006-03-27 23:39:31 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-28 17:02:43 -0800
commitf6c90b71a355a0a4a22e1cfee5748617adc25a53 (patch)
tree2fdbe51a57e25a781128ce4a8c85375201221ded /net/appletalk/ddp.c
parentf1465f7ea9e7aecba8e41d4aac9240f9b7fe2e24 (diff)
[NET]: Fix ipx/econet/appletalk/irda ioctl crashes
Fix kernel oopses whenever somebody issues compatible ioctl on AppleTalk, Econet, IPX or IRDA socket. For AppleTalk/Econet/IRDA it restores state in which these sockets were before compat_ioctl was introduced to the socket ops, for IPX it implements support for 4 ioctls which were not implemented before - as these ioctls use structures which match between 32bit and 64bit userspace, no special code is needed, just call 64bit ioctl handler. Signed-off-by: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/appletalk/ddp.c')
-rw-r--r--net/appletalk/ddp.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 697ac55e29dc..7b1eb9a4fc96 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1819,6 +1819,22 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return rc;
}
+
+#ifdef CONFIG_COMPAT
+static int atalk_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ /*
+ * All Appletalk ioctls except SIOCATALKDIFADDR are standard. And
+ * SIOCATALKDIFADDR is handled by upper layer as well, so there is
+ * nothing to do. Eventually SIOCATALKDIFADDR should be moved
+ * here so there is no generic SIOCPROTOPRIVATE translation in the
+ * system.
+ */
+ return -ENOIOCTLCMD;
+}
+#endif
+
+
static struct net_proto_family atalk_family_ops = {
.family = PF_APPLETALK,
.create = atalk_create,
@@ -1836,6 +1852,9 @@ static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = {
.getname = atalk_getname,
.poll = datagram_poll,
.ioctl = atalk_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = atalk_compat_ioctl,
+#endif
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.setsockopt = sock_no_setsockopt,