From: Arnd Bergmann <arnd@kernel.org>
To: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Jakub Kicinski <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH net-next v3 09/31] appletalk: use ndo_siocdevprivate
Date: Tue, 27 Jul 2021 15:44:55 +0200 [thread overview]
Message-ID: <20210727134517.1384504-10-arnd@kernel.org> (raw)
In-Reply-To: <20210727134517.1384504-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb.de>
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>
---
drivers/net/appletalk/ipddp.c | 16 ++++++++++------
1 file 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;
--
2.29.2
next prev parent reply other threads:[~2021-07-27 13:46 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 13:44 [PATCH net-next v3 00/31] ndo_ioctl rework Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 01/31] net: split out SIOCDEVPRIVATE handling from dev_ioctl Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 02/31] staging: rtlwifi: use siocdevprivate Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 03/31] staging: wlan-ng: " Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 04/31] hostap: use ndo_siocdevprivate Arnd Bergmann
2021-07-28 7:07 ` Kalle Valo
2021-07-27 13:44 ` [PATCH net-next v3 05/31] bridge: " Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 06/31] phonet: use siocdevprivate Arnd Bergmann
2021-07-27 16:03 ` Rémi Denis-Courmont
2021-07-27 13:44 ` [PATCH net-next v3 07/31] tulip: use ndo_siocdevprivate Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 08/31] bonding: use siocdevprivate Arnd Bergmann
2021-07-27 13:44 ` Arnd Bergmann [this message]
2021-07-27 13:44 ` [PATCH net-next v3 10/31] hamachi: use ndo_siocdevprivate Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 11/31] tehuti: " Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 12/31] eql: " Arnd Bergmann
2021-07-27 13:44 ` [PATCH net-next v3 13/31] fddi: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 14/31] net: usb: " Arnd Bergmann
2021-07-28 13:02 ` Petko Manolov
2021-07-27 13:45 ` [PATCH net-next v3 15/31] slip/plip: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 16/31] qeth: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 17/31] cxgb3: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 18/31] hamradio: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 19/31] airo: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 20/31] ip_tunnel: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 21/31] hippi: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 22/31] sb1000: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 23/31] ppp: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 24/31] wan: " Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 25/31] wan: cosa: remove dead cosa_net_ioctl() function Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 26/31] dev_ioctl: pass SIOCDEVPRIVATE data separately Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 27/31] dev_ioctl: split out ndo_eth_ioctl Arnd Bergmann
2021-07-27 16:30 ` Jason Gunthorpe
2021-07-27 13:45 ` [PATCH net-next v3 28/31] net: split out ndo_siowandev ioctl Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 29/31] net: socket: return changed ifreq from SIOCDEVPRIVATE Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 30/31] net: bridge: move bridge ioctls out of .ndo_do_ioctl Arnd Bergmann
2021-07-27 13:45 ` [PATCH net-next v3 31/31] net: bonding: move ioctl handling to private ndo operation Arnd Bergmann
2021-07-27 20:00 ` [PATCH net-next v3 00/31] ndo_ioctl rework patchwork-bot+netdevbpf
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