diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2021-07-27 16:44:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-27 22:11:43 +0300 |
| commit | dbecb011eb781de411daf5d0c8745cd158a55f06 (patch) | |
| tree | 0a23da1dd64b2d8dd11f79c1c5e8cef94783636a /drivers/net/appletalk | |
| parent | 232ec98ec35d72352efb2f52d1b0628f425dbf86 (diff) | |
| download | linux-dbecb011eb781de411daf5d0c8745cd158a55f06.tar.xz | |
appletalk: use ndo_siocdevprivate
appletalk has three SIOCDEVPRIVATE ioctl commands that are
broken in compat mode because the passed structure contains
a pointer.
Change it over to ndo_siocdevprivate for consistency and
make it return an error when called in compat mode. This
could be fixed if there are still users.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/appletalk')
| -rw-r--r-- | drivers/net/appletalk/ipddp.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c index 51cf5eca9c7f..5566daefbff4 100644 --- a/drivers/net/appletalk/ipddp.c +++ b/drivers/net/appletalk/ipddp.c @@ -54,11 +54,12 @@ static netdev_tx_t ipddp_xmit(struct sk_buff *skb, static int ipddp_create(struct ipddp_route *new_rt); static int ipddp_delete(struct ipddp_route *rt); static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt); -static int ipddp_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); +static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr, + void __user *data, int cmd); static const struct net_device_ops ipddp_netdev_ops = { .ndo_start_xmit = ipddp_xmit, - .ndo_do_ioctl = ipddp_ioctl, + .ndo_siocdevprivate = ipddp_siocdevprivate, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; @@ -268,15 +269,18 @@ static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt) return NULL; } -static int ipddp_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr, + void __user *data, int cmd) { - struct ipddp_route __user *rt = ifr->ifr_data; struct ipddp_route rcp, rcp2, *rp; + if (in_compat_syscall()) + return -EOPNOTSUPP; + if(!capable(CAP_NET_ADMIN)) return -EPERM; - if(copy_from_user(&rcp, rt, sizeof(rcp))) + if (copy_from_user(&rcp, data, sizeof(rcp))) return -EFAULT; switch(cmd) @@ -296,7 +300,7 @@ static int ipddp_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) spin_unlock_bh(&ipddp_route_lock); if (rp) { - if (copy_to_user(rt, &rcp2, + if (copy_to_user(data, &rcp2, sizeof(struct ipddp_route))) return -EFAULT; return 0; |