lkml.org 
[lkml]   [2019]   [Feb]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.20 136/183] net: socket: fix SIOCGIFNAME in compat
Date
4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit c6c9fee35dc27362b7bac34b2fc9f5b8ace2e22c ]

As reported by Robert O'Callahan in
https://bugzilla.kernel.org/show_bug.cgi?id=202273
reverting the previous changes in this area broke
the SIOCGIFNAME ioctl in compat again (I'd previously
fixed it after his previous report of breakage in
https://bugzilla.kernel.org/show_bug.cgi?id=199469).

This is obviously because I fixed SIOCGIFNAME more or
less by accident.

Fix it explicitly now by making it pass through the
restored compat translation code.

Cc: stable@vger.kernel.org
Fixes: 4cf808e7ac32 ("kill dev_ifname32()")
Reported-by: Robert O'Callahan <robert@ocallahan.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/socket.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/socket.c
+++ b/net/socket.c
@@ -2999,6 +2999,7 @@ static int compat_ifreq_ioctl(struct net
case SIOCGIFTXQLEN:
case SIOCGMIIPHY:
case SIOCGMIIREG:
+ case SIOCGIFNAME:
if (copy_in_user(uifr32, uifr, sizeof(*uifr32)))
err = -EFAULT;
break;
@@ -3222,6 +3223,7 @@ static int compat_sock_ioctl_trans(struc
case SIOCSIFTXQLEN:
case SIOCBRADDIF:
case SIOCBRDELIF:
+ case SIOCGIFNAME:
case SIOCSIFNAME:
case SIOCGMIIPHY:
case SIOCGMIIREG:
@@ -3236,7 +3238,6 @@ static int compat_sock_ioctl_trans(struc
case SIOCBONDRELEASE:
case SIOCBONDSETHWADDR:
case SIOCBONDCHANGEACTIVE:
- case SIOCGIFNAME:
return sock_do_ioctl(net, sock, cmd, arg);
}


\
 
 \ /
  Last update: 2019-02-25 22:36    [W:0.423 / U:6.604 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site