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| author | Petr Vandrovec <petr@vandrovec.name> | 2006-03-27 23:39:31 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-28 17:02:43 -0800 |
| commit | f6c90b71a355a0a4a22e1cfee5748617adc25a53 (patch) | |
| tree | 2fdbe51a57e25a781128ce4a8c85375201221ded /net/ipx | |
| parent | f1465f7ea9e7aecba8e41d4aac9240f9b7fe2e24 (diff) | |
| download | lwn-f6c90b71a355a0a4a22e1cfee5748617adc25a53.tar.gz lwn-f6c90b71a355a0a4a22e1cfee5748617adc25a53.zip | |
[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')
| -rw-r--r-- | net/ipx/af_ipx.c | 26 |
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, |