From f6c90b71a355a0a4a22e1cfee5748617adc25a53 Mon Sep 17 00:00:00 2001 From: Petr Vandrovec Date: Mon, 27 Mar 2006 23:39:31 -0800 Subject: [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 Signed-off-by: David S. Miller --- net/appletalk/ddp.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'net/appletalk') diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index 697ac55e29d..7b1eb9a4fc9 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, -- cgit v1.2.3