diff options
Diffstat (limited to 'security/apparmor/label.c')
| -rw-r--r-- | security/apparmor/label.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/security/apparmor/label.c b/security/apparmor/label.c index bb34094421c4..ba3987242282 100644 --- a/security/apparmor/label.c +++ b/security/apparmor/label.c @@ -550,6 +550,39 @@ bool aa_label_is_subset(struct aa_label *set, struct aa_label *sub) return __aa_label_next_not_in_set(&i, set, sub) == NULL; } +/** + * aa_label_is_unconfined_subset - test if @sub is a subset of @set + * @set: label to test against + * @sub: label to test if is subset of @set + * + * This checks for subset but taking into account unconfined. IF + * @sub contains an unconfined profile that does not have a matching + * unconfined in @set then this will not cause the test to fail. + * Conversely we don't care about an unconfined in @set that is not in + * @sub + * + * Returns: true if @sub is special_subset of @set + * else false + */ +bool aa_label_is_unconfined_subset(struct aa_label *set, struct aa_label *sub) +{ + struct label_it i = { }; + struct aa_profile *p; + + AA_BUG(!set); + AA_BUG(!sub); + + if (sub == set) + return true; + + do { + p = __aa_label_next_not_in_set(&i, set, sub); + if (p && !profile_unconfined(p)) + break; + } while (p); + + return p == NULL; +} /** |