From: Eric W. Biederman <ebiederm@xmission.com>
Date: Fri, 16 Nov 2012 03:02:58 +0000 (+0000)
Subject: sysctl: Pass useful parameters to sysctl permissions
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~292
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73f7ef435934e952c1d70d83d69921ea5d1f6bd4;p=pandora-kernel.git

sysctl: Pass useful parameters to sysctl permissions

- Current is implicitly avaiable so passing current->nsproxy isn't useful.
- The ctl_table_header is needed to find how the sysctl table is connected
  to the rest of sysctl.
- ctl_table_root is avaiable in the ctl_table_header so no need to it.

With these changes it becomes possible to write a version of
net_sysctl_permission that takes into account the network namespace of
the sysctl table, an important feature in extending the user namespace.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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