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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/ipx/af_ipx.c
parentf1465f7ea9e7aecba8e41d4aac9240f9b7fe2e24 (diff)
downloadlinux-f6c90b71a355a0a4a22e1cfee5748617adc25a53.tar.bz2
[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/ipx/af_ipx.c')
-rw-r--r--net/ipx/af_ipx.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 0fb513a34d11..2dbf134d5266 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1892,6 +1892,29 @@ static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return rc;
}
+
+#ifdef CONFIG_COMPAT
+static int ipx_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ /*
+ * These 4 commands use same structure on 32bit and 64bit. Rest of IPX
+ * commands is handled by generic ioctl code. As these commands are
+ * SIOCPROTOPRIVATE..SIOCPROTOPRIVATE+3, they cannot be handled by generic
+ * code.
+ */
+ switch (cmd) {
+ case SIOCAIPXITFCRT:
+ case SIOCAIPXPRISLT:
+ case SIOCIPXCFGDATA:
+ case SIOCIPXNCPCONN:
+ return ipx_ioctl(sock, cmd, arg);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+#endif
+
+
/*
* Socket family declarations
*/
@@ -1913,6 +1936,9 @@ static const struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
.getname = ipx_getname,
.poll = datagram_poll,
.ioctl = ipx_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ipx_compat_ioctl,
+#endif
.listen = sock_no_listen,
.shutdown = sock_no_shutdown, /* FIXME: support shutdown */
.setsockopt = ipx_setsockopt,