aa_label_audit, aa_label_find, aa_label_seq_print and aa_update_label_name
were added by commit
f1bd904175e8 ("apparmor: add the base fns() for domain labels")
but never used.

aa_profile_label_perm was added by commit
637f688dc3dc ("apparmor: switch from profiles to using labels on contexts")
but never used.

aa_secid_update was added by commit
c092921219d2 ("apparmor: add support for mapping secids and using secctxes")
but never used.

aa_split_fqname has been unused since commit
3664268f19ea ("apparmor: add namespace lookup fns()")

aa_lookup_profile has been unused since commit
93c98a484c49 ("apparmor: move exec domain mediation to using labels")

aa_audit_perms_cb was only used by aa_profile_label_perm (see above).

All of these commits are from around 2017.

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: John Johansen <john.johansen@canonical.com>

unprivileged unconfined can use change_profile to alter the confinement
set by the mac admin.

Allow restricting unprivileged unconfined by still allowing change_profile
but stacking the change against unconfined. This allows unconfined to
still apply system policy but allows the task to enter the new confinement.

If unprivileged unconfined is required a sysctl is provided to switch
to the previous behavior.

Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

With the move to permission tables the dfa is no longer a stand
alone entity when used, needing a minimum of a permission table.
However it still could be shared among different pdbs each using
a different permission table.

Instead of duping the permission table when sharing a pdb, add a
refcount to the pdb so it can be easily shared.

Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

The cred is needed to properly audit some messages, and will be needed
in the future for uid conditional mediation. So pass it through to
where the apparmor_audit_data struct gets defined.

Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

The last usage of PROF_{ADD,REPLACE} were removed by commit 18e99f191a8e
("apparmor: provide finer control over policy management"). So remove
these two unused macros.

Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

The implementions of these declarations do not exist, remove them all.

Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

Bother unconfined and learning profiles use the null profile as their
base. Refactor so they are share a common base routine. This doesn't
save much atm but will be important when the feature set of the
parent is inherited.

Signed-off-by: John Johansen <john.johansen@canonical.com>

Convert profile->rules to a list as the next step towards supporting
multiple rulesets in a profile. For this step only support a single
list entry item. The logic for iterating the list will come as a
separate step.

Signed-off-by: John Johansen <john.johansen@canonical.com>

In preparation for moving from a single set of rules and a single
attachment to multiple rulesets and attachments separate from the
profile refactor attachment information and ruleset info into their
own structures.

Signed-off-by: John Johansen <john.johansen@canonical.com>

Currently permissions are encoded in the dfa accept entries that are
then mapped to an internal permission structure. This limits the
permissions that userspace can specify, so allow userspace to directly
specify the permission table.

Signed-off-by: John Johansen <john.johansen@canonical.com>