From: Arnd Bergmann <arnd@kernel.org>
To: netdev@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
bridge@lists.linux-foundation.org, linux-hams@vger.kernel.org,
Jakub Kicinski <kuba@kernel.org>, Christoph Hellwig <hch@lst.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Johannes Berg <johannes@sipsolutions.net>,
Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>
Subject: [RFC net-next 10/28] appletalk: use ndo_siocdevprivate
Date: Fri, 6 Nov 2020 23:17:25 +0100 [thread overview]
Message-ID: <20201106221743.3271965-11-arnd@kernel.org> (raw)
In-Reply-To: <20201106221743.3271965-1-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 | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c
index 51cf5eca9c7f..812b1c878ae7 100644
--- a/drivers/net/appletalk/ipddp.c
+++ b/drivers/net/appletalk/ipddp.c
@@ -54,11 +54,11 @@ 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 +268,18 @@ 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 +299,7 @@ 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;
--
2.27.0
next prev parent reply other threads:[~2020-11-06 22:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-06 22:17 [RFC net-next 00/28] ndo_ioctl rework Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 01/28] net: split out SIOCDEVPRIVATE handling from dev_ioctl Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 02/28] staging: rtlwifi: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 03/28] staging: wlan-ng: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 04/28] hostap: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 05/28] wireless: remove old ioctls Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 06/28] bridge: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 07/28] phonet: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 08/28] tulip: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 09/28] bonding: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` Arnd Bergmann [this message]
2020-11-06 22:17 ` [RFC net-next 11/28] hamachi: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 12/28] tehuti: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 13/28] eql: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 14/28] fddi: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 15/28] net: usb: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 16/28] slip/plip: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 17/28] qeth: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 18/28] cxgb3: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 19/28] dev_ioctl: pass SIOCDEVPRIVATE data separately Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 20/28] dev_ioctl: split out ndo_eth_ioctl Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 21/28] wan: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 22/28] hamradio: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 23/28] airo: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 24/28] ip_tunnel: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 25/28] hippi: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 26/28] sb1000: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 27/28] ppp: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 28/28] net: socket: return changed ifreq from SIOCDEVPRIVATE Arnd Bergmann
2020-11-08 0:06 ` [RFC net-next 00/28] ndo_ioctl rework Jakub Kicinski
2020-11-08 8:27 ` Arnd Bergmann
2020-11-08 11:21 ` Kalle Valo
2020-11-08 11:42 ` Arnd Bergmann
2020-11-09 11:25 ` Kalle Valo
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