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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: smack: Add a new '-CIPSO' option to the network address label configuration netlabel: Cleanup the Smack/NetLabel code to fix incoming TCP connections lsm: Remove the socket_post_accept() hook selinux: Remove the "compat_net" compatibility code netlabel: Label incoming TCP connections correctly in SELinux lsm: Relocate the IPv4 security_inet_conn_request() hooks TOMOYO: Fix a typo. smack: convert smack to standard linux lists
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@@ -184,14 +184,16 @@ length. Single character labels using special characters, that being anything
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other than a letter or digit, are reserved for use by the Smack development
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team. Smack labels are unstructured, case sensitive, and the only operation
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ever performed on them is comparison for equality. Smack labels cannot
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contain unprintable characters or the "/" (slash) character.
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contain unprintable characters or the "/" (slash) character. Smack labels
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cannot begin with a '-', which is reserved for special options.
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There are some predefined labels:
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_ Pronounced "floor", a single underscore character.
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^ Pronounced "hat", a single circumflex character.
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* Pronounced "star", a single asterisk character.
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? Pronounced "huh", a single question mark character.
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_ Pronounced "floor", a single underscore character.
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^ Pronounced "hat", a single circumflex character.
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* Pronounced "star", a single asterisk character.
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? Pronounced "huh", a single question mark character.
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@ Pronounced "Internet", a single at sign character.
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Every task on a Smack system is assigned a label. System tasks, such as
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init(8) and systems daemons, are run with the floor ("_") label. User tasks
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@@ -412,6 +414,36 @@ sockets.
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A privileged program may set this to match the label of another
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task with which it hopes to communicate.
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Smack Netlabel Exceptions
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You will often find that your labeled application has to talk to the outside,
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unlabeled world. To do this there's a special file /smack/netlabel where you can
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add some exceptions in the form of :
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@IP1 LABEL1 or
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@IP2/MASK LABEL2
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It means that your application will have unlabeled access to @IP1 if it has
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write access on LABEL1, and access to the subnet @IP2/MASK if it has write
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access on LABEL2.
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Entries in the /smack/netlabel file are matched by longest mask first, like in
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classless IPv4 routing.
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A special label '@' and an option '-CIPSO' can be used there :
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@ means Internet, any application with any label has access to it
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-CIPSO means standard CIPSO networking
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If you don't know what CIPSO is and don't plan to use it, you can just do :
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echo 127.0.0.1 -CIPSO > /smack/netlabel
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echo 0.0.0.0/0 @ > /smack/netlabel
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If you use CIPSO on your 192.168.0.0/16 local network and need also unlabeled
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Internet access, you can have :
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echo 127.0.0.1 -CIPSO > /smack/netlabel
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echo 192.168.0.0/16 -CIPSO > /smack/netlabel
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echo 0.0.0.0/0 @ > /smack/netlabel
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Writing Applications for Smack
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There are three sorts of applications that will run on a Smack system. How an
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@@ -356,17 +356,6 @@ Who: Hans de Goede <hdegoede@redhat.com>
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---------------------------
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What: SELinux "compat_net" functionality
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When: 2.6.30 at the earliest
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Why: In 2.6.18 the Secmark concept was introduced to replace the "compat_net"
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network access control functionality of SELinux. Secmark offers both
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better performance and greater flexibility than the "compat_net"
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mechanism. Now that the major Linux distributions have moved to
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Secmark, it is time to deprecate the older mechanism and start the
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process of removing the old code.
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Who: Paul Moore <paul.moore@hp.com>
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---------------------------
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What: sysfs ui for changing p4-clockmod parameters
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When: September 2009
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Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and
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@@ -2030,15 +2030,6 @@ and is between 256 and 4096 characters. It is defined in the file
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If enabled at boot time, /selinux/disable can be used
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later to disable prior to initial policy load.
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selinux_compat_net =
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[SELINUX] Set initial selinux_compat_net flag value.
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Format: { "0" | "1" }
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0 -- use new secmark-based packet controls
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1 -- use legacy packet controls
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Default value is 0 (preferred).
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Value can be changed at runtime via
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/selinux/compat_net.
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serialnumber [BUGS=X86-32]
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shapers= [NET]
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