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authorJohn Johansen <john.johansen@canonical.com>2012-02-16 19:07:53 +0400
committerJohn Johansen <john.johansen@canonical.com>2012-03-15 06:09:03 +0400
commitad5ff3db53c68c2f12936bc74ea5dfe0af943592 (patch)
tree72d9ac19fdca90d283a05f444870847ce5fb9f0c /security/apparmor/policy_unpack.c
parent57fa1e18091e66b7e1002816523cb218196a882e (diff)
downloadlinux-ad5ff3db53c68c2f12936bc74ea5dfe0af943592.tar.xz
AppArmor: Add ability to load extended policy
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>
Diffstat (limited to 'security/apparmor/policy_unpack.c')
-rw-r--r--security/apparmor/policy_unpack.c24
1 files changed, 23 insertions, 1 deletions
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index c50634b724b5..25fd51edc8da 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -469,7 +469,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e)
{
struct aa_profile *profile = NULL;
const char *name = NULL;
- int error = -EPROTO;
+ int i, error = -EPROTO;
kernel_cap_t tmpcap;
u32 tmp;
@@ -562,6 +562,28 @@ static struct aa_profile *unpack_profile(struct aa_ext *e)
if (!unpack_rlimits(e, profile))
goto fail;
+ if (unpack_nameX(e, AA_STRUCT, "policydb")) {
+ /* generic policy dfa - optional and may be NULL */
+ profile->policy.dfa = unpack_dfa(e);
+ if (IS_ERR(profile->policy.dfa)) {
+ error = PTR_ERR(profile->policy.dfa);
+ profile->policy.dfa = NULL;
+ goto fail;
+ }
+ if (!unpack_u32(e, &profile->policy.start[0], "start"))
+ /* default start state */
+ profile->policy.start[0] = DFA_START;
+ /* setup class index */
+ for (i = AA_CLASS_FILE; i <= AA_CLASS_LAST; i++) {
+ profile->policy.start[i] =
+ aa_dfa_next(profile->policy.dfa,
+ profile->policy.start[0],
+ i);
+ }
+ if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ goto fail;
+ }
+
/* get file rules */
profile->file.dfa = unpack_dfa(e);
if (IS_ERR(profile->file.dfa)) {