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path: root/security/apparmor/include/policy.h
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2017-01-16apparmor: rename replacedby to proxyJohn Johansen
Proxy is shorter and a better fit than replaceby, so rename it. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: rename PFLAG_INVALID to PFLAG_STALEJohn Johansen
Invalid does not convey the meaning of the flag anymore so rename it. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: rename namespace to ns to improve code line lengthsJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: split apparmor policy namespaces code into its own fileJohn Johansen
Policy namespaces will be diverging from profile management and expanding so put it in its own file. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: split out shared policy_XXX fns to libJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: move lib definitions into separate lib includeJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-14locking/atomic, kref: Use kref_get_unless_zero() morePeter Zijlstra
For some obscure reason apparmor thinks its needs to locally implement kref primitives that already exist. Stop doing this. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-12apparmor: fix module parameters can be changed after policy is lockedJohn Johansen
the policy_lock parameter is a one way switch that prevents policy from being further modified. Unfortunately some of the module parameters can effectively modify policy by turning off enforcement. split policy_admin_capable into a view check and a full admin check, and update the admin check to test the policy_lock parameter. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-09-30apparmor: fix suspicious RCU usage warning in policy.c/policy.hJohn Johansen
The recent 3.12 pull request for apparmor was missing a couple rcu _protected access modifiers. Resulting in the follow suspicious RCU usage [ 29.804534] [ INFO: suspicious RCU usage. ] [ 29.804539] 3.11.0+ #5 Not tainted [ 29.804541] ------------------------------- [ 29.804545] security/apparmor/include/policy.h:363 suspicious rcu_dereference_check() usage! [ 29.804548] [ 29.804548] other info that might help us debug this: [ 29.804548] [ 29.804553] [ 29.804553] rcu_scheduler_active = 1, debug_locks = 1 [ 29.804558] 2 locks held by apparmor_parser/1268: [ 29.804560] #0: (sb_writers#9){.+.+.+}, at: [<ffffffff81120a4c>] file_start_write+0x27/0x29 [ 29.804576] #1: (&ns->lock){+.+.+.}, at: [<ffffffff811f5d88>] aa_replace_profiles+0x166/0x57c [ 29.804589] [ 29.804589] stack backtrace: [ 29.804595] CPU: 0 PID: 1268 Comm: apparmor_parser Not tainted 3.11.0+ #5 [ 29.804599] Hardware name: ASUSTeK Computer Inc. UL50VT /UL50VT , BIOS 217 03/01/2010 [ 29.804602] 0000000000000000 ffff8800b95a1d90 ffffffff8144eb9b ffff8800b94db540 [ 29.804611] ffff8800b95a1dc0 ffffffff81087439 ffff880138cc3a18 ffff880138cc3a18 [ 29.804619] ffff8800b9464a90 ffff880138cc3a38 ffff8800b95a1df0 ffffffff811f5084 [ 29.804628] Call Trace: [ 29.804636] [<ffffffff8144eb9b>] dump_stack+0x4e/0x82 [ 29.804642] [<ffffffff81087439>] lockdep_rcu_suspicious+0xfc/0x105 [ 29.804649] [<ffffffff811f5084>] __aa_update_replacedby+0x53/0x7f [ 29.804655] [<ffffffff811f5408>] __replace_profile+0x11f/0x1ed [ 29.804661] [<ffffffff811f6032>] aa_replace_profiles+0x410/0x57c [ 29.804668] [<ffffffff811f16d4>] profile_replace+0x35/0x4c [ 29.804674] [<ffffffff81120fa3>] vfs_write+0xad/0x113 [ 29.804680] [<ffffffff81121609>] SyS_write+0x44/0x7a [ 29.804687] [<ffffffff8145bfd2>] system_call_fastpath+0x16/0x1b [ 29.804691] [ 29.804694] =============================== [ 29.804697] [ INFO: suspicious RCU usage. ] [ 29.804700] 3.11.0+ #5 Not tainted [ 29.804703] ------------------------------- [ 29.804706] security/apparmor/policy.c:566 suspicious rcu_dereference_check() usage! [ 29.804709] [ 29.804709] other info that might help us debug this: [ 29.804709] [ 29.804714] [ 29.804714] rcu_scheduler_active = 1, debug_locks = 1 [ 29.804718] 2 locks held by apparmor_parser/1268: [ 29.804721] #0: (sb_writers#9){.+.+.+}, at: [<ffffffff81120a4c>] file_start_write+0x27/0x29 [ 29.804733] #1: (&ns->lock){+.+.+.}, at: [<ffffffff811f5d88>] aa_replace_profiles+0x166/0x57c [ 29.804744] [ 29.804744] stack backtrace: [ 29.804750] CPU: 0 PID: 1268 Comm: apparmor_parser Not tainted 3.11.0+ #5 [ 29.804753] Hardware name: ASUSTeK Computer Inc. UL50VT /UL50VT , BIOS 217 03/01/2010 [ 29.804756] 0000000000000000 ffff8800b95a1d80 ffffffff8144eb9b ffff8800b94db540 [ 29.804764] ffff8800b95a1db0 ffffffff81087439 ffff8800b95b02b0 0000000000000000 [ 29.804772] ffff8800b9efba08 ffff880138cc3a38 ffff8800b95a1dd0 ffffffff811f4f94 [ 29.804779] Call Trace: [ 29.804786] [<ffffffff8144eb9b>] dump_stack+0x4e/0x82 [ 29.804791] [<ffffffff81087439>] lockdep_rcu_suspicious+0xfc/0x105 [ 29.804798] [<ffffffff811f4f94>] aa_free_replacedby_kref+0x4d/0x62 [ 29.804804] [<ffffffff811f4f47>] ? aa_put_namespace+0x17/0x17 [ 29.804810] [<ffffffff811f4f0b>] kref_put+0x36/0x40 [ 29.804816] [<ffffffff811f5423>] __replace_profile+0x13a/0x1ed [ 29.804822] [<ffffffff811f6032>] aa_replace_profiles+0x410/0x57c [ 29.804829] [<ffffffff811f16d4>] profile_replace+0x35/0x4c [ 29.804835] [<ffffffff81120fa3>] vfs_write+0xad/0x113 [ 29.804840] [<ffffffff81121609>] SyS_write+0x44/0x7a [ 29.804847] [<ffffffff8145bfd2>] system_call_fastpath+0x16/0x1b Reported-by: miles.lane@gmail.com CC: paulmck@linux.vnet.ibm.com Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-08-14apparmor: add the ability to report a sha1 hash of loaded policyJohn Johansen
Provide userspace the ability to introspect a sha1 hash value for each profile currently loaded. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-08-14apparmor: add an optional profile attachment string for profilesJohn Johansen
Add the ability to take in and report a human readable profile attachment string for profiles so that attachment specifications can be easily inspected. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-08-14apparmor: add interface files for profiles and namespacesJohn Johansen
Add basic interface files to access namespace and profile information. The interface files are created when a profile is loaded and removed when the profile or namespace is removed. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-08-14apparmor: allow setting any profile into the unconfined stateJohn Johansen
Allow emulating the default profile behavior from boot, by allowing loading of a profile in the unconfined state into a new NS. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-08-14apparmor: make free_profile available outside of policy.cJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-08-14apparmor: rework namespace free pathJohn Johansen
namespaces now completely use the unconfined profile to track the refcount and rcu freeing cycle. So rework the code to simplify (track everything through the profile path right up to the end), and move the rcu_head from policy base to profile as the namespace no longer needs it. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-08-14apparmor: update how unconfined is handledJohn Johansen
ns->unconfined is being used read side without locking, nor rcu but is being updated when a namespace is removed. This works for the root ns which is never removed but has a race window and can cause failures when children namespaces are removed. Also ns and ns->unconfined have a circular refcounting dependency that is problematic and must be broken. Currently this is done incorrectly when the namespace is destroyed. Fix this by forward referencing unconfined via the replacedby infrastructure instead of directly updating the ns->unconfined pointer. Remove the circular refcount dependency by making the ns and its unconfined profile share the same refcount. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-08-14apparmor: change how profile replacement update is doneJohn Johansen
remove the use of replaced by chaining and move to profile invalidation and lookup to handle task replacement. Replacement chaining can result in large chains of profiles being pinned in memory when one profile in the chain is use. With implicit labeling this will be even more of a problem, so move to a direct lookup method. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-08-14apparmor: convert profile lists to RCU based lockingJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: remove sid from profilesJohn Johansen
The sid is not going to be a direct property of a profile anymore, instead it will be directly related to the label, and the profile will pickup a label back reference. For null-profiles replace the use of sid with a per namespace unique id. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: refactor profile mode macrosJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2012-03-14AppArmor: add const qualifiers to string arraysJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: John Johansen <john.johansen@canonical.com>
2012-03-14AppArmor: Add ability to load extended policyJohn Johansen
Add the base support for the new policy extensions. This does not bring any additional functionality, or change current semantics. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2010-08-02AppArmor: core policy routinesJohn Johansen
The basic routines and defines for AppArmor policy. AppArmor policy is defined by a few basic components. profiles - the basic unit of confinement contain all the information to enforce policy on a task Profiles tend to be named after an executable that they will attach to but this is not required. namespaces - a container for a set of profiles that will be used during attachment and transitions between profiles. sids - which provide a unique id for each profile Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>
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