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authorJames Morris <jmorris@namei.org>2006-06-09 00:33:33 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-17 21:30:05 -0700
commit4e5ab4cb85683cf77b507ba0c4d48871e1562305 (patch)
treeaef7ba8b6050fcaccbaf0d05f8e5ba860a143eaf /security/selinux/Kconfig
parent100468e9c05c10fb6872751c1af523b996d6afa9 (diff)
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[SECMARK]: Add new packet controls to SELinux
Add new per-packet access controls to SELinux, replacing the old packet controls. Packets are labeled with the iptables SECMARK and CONNSECMARK targets, then security policy for the packets is enforced with these controls. To allow for a smooth transition to the new controls, the old code is still present, but not active by default. To restore previous behavior, the old controls may be activated at runtime by writing a '1' to /selinux/compat_net, and also via the kernel boot parameter selinux_compat_net. Switching between the network control models requires the security load_policy permission. The old controls will probably eventually be removed and any continued use is discouraged. With this patch, the new secmark controls for SElinux are disabled by default, so existing behavior is entirely preserved, and the user is not affected at all. It also provides a config option to enable the secmark controls by default (which can always be overridden at boot and runtime). It is also noted in the kconfig help that the user will need updated userspace if enabling secmark controls for SELinux and that they'll probably need the SECMARK and CONNMARK targets, and conntrack protocol helpers, although such decisions are beyond the scope of kernel configuration. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'security/selinux/Kconfig')
-rw-r--r--security/selinux/Kconfig29
1 files changed, 29 insertions, 0 deletions
diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig
index f636f53ca54..814ddc42f1f 100644
--- a/security/selinux/Kconfig
+++ b/security/selinux/Kconfig
@@ -1,6 +1,7 @@
config SECURITY_SELINUX
bool "NSA SELinux Support"
depends on SECURITY_NETWORK && AUDIT && NET && INET
+ select NETWORK_SECMARK
default n
help
This selects NSA Security-Enhanced Linux (SELinux).
@@ -95,3 +96,31 @@ config SECURITY_SELINUX_CHECKREQPROT_VALUE
via /selinux/checkreqprot if authorized by policy.
If you are unsure how to answer this question, answer 1.
+
+config SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT
+ bool "NSA SELinux enable new secmark network controls by default"
+ depends on SECURITY_SELINUX
+ default n
+ help
+ This option determines whether the new secmark-based network
+ controls will be enabled by default. If not, the old internal
+ per-packet controls will be enabled by default, preserving
+ old behavior.
+
+ If you enable the new controls, you will need updated
+ SELinux userspace libraries, tools and policy. Typically,
+ your distribution will provide these and enable the new controls
+ in the kernel they also distribute.
+
+ Note that this option can be overriden at boot with the
+ selinux_compat_net parameter, and after boot via
+ /selinux/compat_net. See Documentation/kernel-parameters.txt
+ for details on this parameter.
+
+ If you enable the new network controls, you will likely
+ also require the SECMARK and CONNSECMARK targets, as
+ well as any conntrack helpers for protocols which you
+ wish to control.
+
+ If you are unsure what do do here, select N.
+