Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 1189 deletions

diff --git a/ANDROID_3.4.5/security/apparmor/policy.c b/ANDROID_3.4.5/security/apparmor/policy.c
deleted file mode 100644
index f1f7506a..00000000
--- a/ANDROID_3.4.5/security/apparmor/policy.c
+++ /dev/null
@@ -1,1189 +0,0 @@
-/*
- * AppArmor security module
- *
- * This file contains AppArmor policy manipulation functions
- *
- * Copyright (C) 1998-2008 Novell/SUSE
- * Copyright 2009-2010 Canonical Ltd.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, version 2 of the
- * License.
- *
- *
- * AppArmor policy is based around profiles, which contain the rules a
- * task is confined by.  Every task in the system has a profile attached
- * to it determined either by matching "unconfined" tasks against the
- * visible set of profiles or by following a profiles attachment rules.
- *
- * Each profile exists in a profile namespace which is a container of
- * visible profiles.  Each namespace contains a special "unconfined" profile,
- * which doesn't enforce any confinement on a task beyond DAC.
- *
- * Namespace and profile names can be written together in either
- * of two syntaxes.
- *	:namespace:profile - used by kernel interfaces for easy detection
- *	namespace://profile - used by policy
- *
- * Profile names can not start with : or @ or ^ and may not contain \0
- *
- * Reserved profile names
- *	unconfined - special automatically generated unconfined profile
- *	inherit - special name to indicate profile inheritance
- *	null-XXXX-YYYY - special automatically generated learning profiles
- *
- * Namespace names may not start with / or @ and may not contain \0 or :
- * Reserved namespace names
- *	user-XXXX - user defined profiles
- *
- * a // in a profile or namespace name indicates a hierarchical name with the
- * name before the // being the parent and the name after the child.
- *
- * Profile and namespace hierarchies serve two different but similar purposes.
- * The namespace contains the set of visible profiles that are considered
- * for attachment.  The hierarchy of namespaces allows for virtualizing
- * the namespace so that for example a chroot can have its own set of profiles
- * which may define some local user namespaces.
- * The profile hierarchy severs two distinct purposes,
- * -  it allows for sub profiles or hats, which allows an application to run
- *    subprograms under its own profile with different restriction than it
- *    self, and not have it use the system profile.
- *    eg. if a mail program starts an editor, the policy might make the
- *        restrictions tighter on the editor tighter than the mail program,
- *        and definitely different than general editor restrictions
- * - it allows for binary hierarchy of profiles, so that execution history
- *   is preserved.  This feature isn't exploited by AppArmor reference policy
- *   but is allowed.  NOTE: this is currently suboptimal because profile
- *   aliasing is not currently implemented so that a profile for each
- *   level must be defined.
- *   eg. /bin/bash///bin/ls as a name would indicate /bin/ls was started
- *       from /bin/bash
- *
- *   A profile or namespace name that can contain one or more // separators
- *   is referred to as an hname (hierarchical).
- *   eg.  /bin/bash//bin/ls
- *
- *   An fqname is a name that may contain both namespace and profile hnames.
- *   eg. :ns:/bin/bash//bin/ls
- *
- * NOTES:
- *   - locking of profile lists is currently fairly coarse.  All profile
- *     lists within a namespace use the namespace lock.
- * FIXME: move profile lists to using rcu_lists
- */
-
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-
-#include "include/apparmor.h"
-#include "include/capability.h"
-#include "include/context.h"
-#include "include/file.h"
-#include "include/ipc.h"
-#include "include/match.h"
-#include "include/path.h"
-#include "include/policy.h"
-#include "include/policy_unpack.h"
-#include "include/resource.h"
-#include "include/sid.h"
-
-
-/* root profile namespace */
-struct aa_namespace *root_ns;
-
-const char *const profile_mode_names[] = {
-	"enforce",
-	"complain",
-	"kill",
-};
-
-/**
- * hname_tail - find the last component of an hname
- * @name: hname to find the base profile name component of  (NOT NULL)
- *
- * Returns: the tail (base profile name) name component of an hname
- */
-static const char *hname_tail(const char *hname)
-{
-	char *split;
-	hname = strim((char *)hname);
-	for (split = strstr(hname, "//"); split; split = strstr(hname, "//"))
-		hname = split + 2;
-
-	return hname;
-}
-
-/**
- * policy_init - initialize a policy structure
- * @policy: policy to initialize  (NOT NULL)
- * @prefix: prefix name if any is required.  (MAYBE NULL)
- * @name: name of the policy, init will make a copy of it  (NOT NULL)
- *
- * Note: this fn creates a copy of strings passed in
- *
- * Returns: true if policy init successful
- */
-static bool policy_init(struct aa_policy *policy, const char *prefix,
-			const char *name)
-{
-	/* freed by policy_free */
-	if (prefix) {
-		policy->hname = kmalloc(strlen(prefix) + strlen(name) + 3,
-					GFP_KERNEL);
-		if (policy->hname)
-			sprintf(policy->hname, "%s//%s", prefix, name);
-	} else
-		policy->hname = kstrdup(name, GFP_KERNEL);
-	if (!policy->hname)
-		return 0;
-	/* base.name is a substring of fqname */
-	policy->name = (char *)hname_tail(policy->hname);
-	INIT_LIST_HEAD(&policy->list);
-	INIT_LIST_HEAD(&policy->profiles);
-	kref_init(&policy->count);
-
-	return 1;
-}
-
-/**
- * policy_destroy - free the elements referenced by @policy
- * @policy: policy that is to have its elements freed  (NOT NULL)
- */
-static void policy_destroy(struct aa_policy *policy)
-{
-	/* still contains profiles -- invalid */
-	if (!list_empty(&policy->profiles)) {
-		AA_ERROR("%s: internal error, "
-			 "policy '%s' still contains profiles\n",
-			 __func__, policy->name);
-		BUG();
-	}
-	if (!list_empty(&policy->list)) {
-		AA_ERROR("%s: internal error, policy '%s' still on list\n",
-			 __func__, policy->name);
-		BUG();
-	}
-
-	/* don't free name as its a subset of hname */
-	kzfree(policy->hname);
-}
-
-/**
- * __policy_find - find a policy by @name on a policy list
- * @head: list to search  (NOT NULL)
- * @name: name to search for  (NOT NULL)
- *
- * Requires: correct locks for the @head list be held
- *
- * Returns: unrefcounted policy that match @name or NULL if not found
- */
-static struct aa_policy *__policy_find(struct list_head *head, const char *name)
-{
-	struct aa_policy *policy;
-
-	list_for_each_entry(policy, head, list) {
-		if (!strcmp(policy->name, name))
-			return policy;
-	}
-	return NULL;
-}
-
-/**
- * __policy_strn_find - find a policy that's name matches @len chars of @str
- * @head: list to search  (NOT NULL)
- * @str: string to search for  (NOT NULL)
- * @len: length of match required
- *
- * Requires: correct locks for the @head list be held
- *
- * Returns: unrefcounted policy that match @str or NULL if not found
- *
- * if @len == strlen(@strlen) then this is equiv to __policy_find
- * other wise it allows searching for policy by a partial match of name
- */
-static struct aa_policy *__policy_strn_find(struct list_head *head,
-					    const char *str, int len)
-{
-	struct aa_policy *policy;
-
-	list_for_each_entry(policy, head, list) {
-		if (aa_strneq(policy->name, str, len))
-			return policy;
-	}
-
-	return NULL;
-}
-
-/*
- * Routines for AppArmor namespaces
- */
-
-static const char *hidden_ns_name = "---";
-/**
- * aa_ns_visible - test if @view is visible from @curr
- * @curr: namespace to treat as the parent (NOT NULL)
- * @view:  namespace to test if visible from @curr (NOT NULL)
- *
- * Returns: true if @view is visible from @curr else false
- */
-bool aa_ns_visible(struct aa_namespace *curr, struct aa_namespace *view)
-{
-	if (curr == view)
-		return true;
-
-	for ( ; view; view = view->parent) {
-		if (view->parent == curr)
-			return true;
-	}
-	return false;
-}
-
-/**
- * aa_na_name - Find the ns name to display for @view from @curr
- * @curr - current namespace (NOT NULL)
- * @view - namespace attempting to view (NOT NULL)
- *
- * Returns: name of @view visible from @curr
- */
-const char *aa_ns_name(struct aa_namespace *curr, struct aa_namespace *view)
-{
-	/* if view == curr then the namespace name isn't displayed */
-	if (curr == view)
-		return "";
-
-	if (aa_ns_visible(curr, view)) {
-		/* at this point if a ns is visible it is in a view ns
-		 * thus the curr ns.hname is a prefix of its name.
-		 * Only output the virtualized portion of the name
-		 * Add + 2 to skip over // separating curr hname prefix
-		 * from the visible tail of the views hname
-		 */
-		return view->base.hname + strlen(curr->base.hname) + 2;
-	} else
-		return hidden_ns_name;
-}
-
-/**
- * alloc_namespace - allocate, initialize and return a new namespace
- * @prefix: parent namespace name (MAYBE NULL)
- * @name: a preallocated name  (NOT NULL)
- *
- * Returns: refcounted namespace or NULL on failure.
- */
-static struct aa_namespace *alloc_namespace(const char *prefix,
-					    const char *name)
-{
-	struct aa_namespace *ns;
-
-	ns = kzalloc(sizeof(*ns), GFP_KERNEL);
-	AA_DEBUG("%s(%p)\n", __func__, ns);
-	if (!ns)
-		return NULL;
-	if (!policy_init(&ns->base, prefix, name))
-		goto fail_ns;
-
-	INIT_LIST_HEAD(&ns->sub_ns);
-	rwlock_init(&ns->lock);
-
-	/* released by free_namespace */
-	ns->unconfined = aa_alloc_profile("unconfined");
-	if (!ns->unconfined)
-		goto fail_unconfined;
-
-	ns->unconfined->sid = aa_alloc_sid();
-	ns->unconfined->flags = PFLAG_UNCONFINED | PFLAG_IX_ON_NAME_ERROR |
-	    PFLAG_IMMUTABLE;
-
-	/*
-	 * released by free_namespace, however __remove_namespace breaks
-	 * the cyclic references (ns->unconfined, and unconfined->ns) and
-	 * replaces with refs to parent namespace unconfined
-	 */
-	ns->unconfined->ns = aa_get_namespace(ns);
-
-	return ns;
-
-fail_unconfined:
-	kzfree(ns->base.hname);
-fail_ns:
-	kzfree(ns);
-	return NULL;
-}
-
-/**
- * free_namespace - free a profile namespace
- * @ns: the namespace to free  (MAYBE NULL)
- *
- * Requires: All references to the namespace must have been put, if the
- *           namespace was referenced by a profile confining a task,
- */
-static void free_namespace(struct aa_namespace *ns)
-{
-	if (!ns)
-		return;
-
-	policy_destroy(&ns->base);
-	aa_put_namespace(ns->parent);
-
-	if (ns->unconfined && ns->unconfined->ns == ns)
-		ns->unconfined->ns = NULL;
-
-	aa_put_profile(ns->unconfined);
-	kzfree(ns);
-}
-
-/**
- * aa_free_namespace_kref - free aa_namespace by kref (see aa_put_namespace)
- * @kr: kref callback for freeing of a namespace  (NOT NULL)
- */
-void aa_free_namespace_kref(struct kref *kref)
-{
-	free_namespace(container_of(kref, struct aa_namespace, base.count));
-}
-
-/**
- * __aa_find_namespace - find a namespace on a list by @name
- * @head: list to search for namespace on  (NOT NULL)
- * @name: name of namespace to look for  (NOT NULL)
- *
- * Returns: unrefcounted namespace
- *
- * Requires: ns lock be held
- */
-static struct aa_namespace *__aa_find_namespace(struct list_head *head,
-						const char *name)
-{
-	return (struct aa_namespace *)__policy_find(head, name);
-}
-
-/**
- * aa_find_namespace  -  look up a profile namespace on the namespace list
- * @root: namespace to search in  (NOT NULL)
- * @name: name of namespace to find  (NOT NULL)
- *
- * Returns: a refcounted namespace on the list, or NULL if no namespace
- *          called @name exists.
- *
- * refcount released by caller
- */
-struct aa_namespace *aa_find_namespace(struct aa_namespace *root,
-				       const char *name)
-{
-	struct aa_namespace *ns = NULL;
-
-	read_lock(&root->lock);
-	ns = aa_get_namespace(__aa_find_namespace(&root->sub_ns, name));
-	read_unlock(&root->lock);
-
-	return ns;
-}
-
-/**
- * aa_prepare_namespace - find an existing or create a new namespace of @name
- * @name: the namespace to find or add  (MAYBE NULL)
- *
- * Returns: refcounted namespace or NULL if failed to create one
- */
-static struct aa_namespace *aa_prepare_namespace(const char *name)
-{
-	struct aa_namespace *ns, *root;
-
-	root = aa_current_profile()->ns;
-
-	write_lock(&root->lock);
-
-	/* if name isn't specified the profile is loaded to the current ns */
-	if (!name) {
-		/* released by caller */
-		ns = aa_get_namespace(root);
-		goto out;
-	}
-
-	/* try and find the specified ns and if it doesn't exist create it */
-	/* released by caller */
-	ns = aa_get_namespace(__aa_find_namespace(&root->sub_ns, name));
-	if (!ns) {
-		/* namespace not found */
-		struct aa_namespace *new_ns;
-		write_unlock(&root->lock);
-		new_ns = alloc_namespace(root->base.hname, name);
-		if (!new_ns)
-			return NULL;
-		write_lock(&root->lock);
-		/* test for race when new_ns was allocated */
-		ns = __aa_find_namespace(&root->sub_ns, name);
-		if (!ns) {
-			/* add parent ref */
-			new_ns->parent = aa_get_namespace(root);
-
-			list_add(&new_ns->base.list, &root->sub_ns);
-			/* add list ref */
-			ns = aa_get_namespace(new_ns);
-		} else {
-			/* raced so free the new one */
-			free_namespace(new_ns);
-			/* get reference on namespace */
-			aa_get_namespace(ns);
-		}
-	}
-out:
-	write_unlock(&root->lock);
-
-	/* return ref */
-	return ns;
-}
-
-/**
- * __list_add_profile - add a profile to a list
- * @list: list to add it to  (NOT NULL)
- * @profile: the profile to add  (NOT NULL)
- *
- * refcount @profile, should be put by __list_remove_profile
- *
- * Requires: namespace lock be held, or list not be shared
- */
-static void __list_add_profile(struct list_head *list,
-			       struct aa_profile *profile)
-{
-	list_add(&profile->base.list, list);
-	/* get list reference */
-	aa_get_profile(profile);
-}
-
-/**
- * __list_remove_profile - remove a profile from the list it is on
- * @profile: the profile to remove  (NOT NULL)
- *
- * remove a profile from the list, warning generally removal should
- * be done with __replace_profile as most profile removals are
- * replacements to the unconfined profile.
- *
- * put @profile list refcount
- *
- * Requires: namespace lock be held, or list not have been live
- */
-static void __list_remove_profile(struct aa_profile *profile)
-{
-	list_del_init(&profile->base.list);
-	if (!(profile->flags & PFLAG_NO_LIST_REF))
-		/* release list reference */
-		aa_put_profile(profile);
-}
-
-/**
- * __replace_profile - replace @old with @new on a list
- * @old: profile to be replaced  (NOT NULL)
- * @new: profile to replace @old with  (NOT NULL)
- *
- * Will duplicate and refcount elements that @new inherits from @old
- * and will inherit @old children.
- *
- * refcount @new for list, put @old list refcount
- *
- * Requires: namespace list lock be held, or list not be shared
- */
-static void __replace_profile(struct aa_profile *old, struct aa_profile *new)
-{
-	struct aa_policy *policy;
-	struct aa_profile *child, *tmp;
-
-	if (old->parent)
-		policy = &old->parent->base;
-	else
-		policy = &old->ns->base;
-
-	/* released when @new is freed */
-	new->parent = aa_get_profile(old->parent);
-	new->ns = aa_get_namespace(old->ns);
-	new->sid = old->sid;
-	__list_add_profile(&policy->profiles, new);
-	/* inherit children */
-	list_for_each_entry_safe(child, tmp, &old->base.profiles, base.list) {
-		aa_put_profile(child->parent);
-		child->parent = aa_get_profile(new);
-		/* list refcount transferred to @new*/
-		list_move(&child->base.list, &new->base.profiles);
-	}
-
-	/* released by free_profile */
-	old->replacedby = aa_get_profile(new);
-	__list_remove_profile(old);
-}
-
-static void __profile_list_release(struct list_head *head);
-
-/**
- * __remove_profile - remove old profile, and children
- * @profile: profile to be replaced  (NOT NULL)
- *
- * Requires: namespace list lock be held, or list not be shared
- */
-static void __remove_profile(struct aa_profile *profile)
-{
-	/* release any children lists first */
-	__profile_list_release(&profile->base.profiles);
-	/* released by free_profile */
-	profile->replacedby = aa_get_profile(profile->ns->unconfined);
-	__list_remove_profile(profile);
-}
-
-/**
- * __profile_list_release - remove all profiles on the list and put refs
- * @head: list of profiles  (NOT NULL)
- *
- * Requires: namespace lock be held
- */
-static void __profile_list_release(struct list_head *head)
-{
-	struct aa_profile *profile, *tmp;
-	list_for_each_entry_safe(profile, tmp, head, base.list)
-		__remove_profile(profile);
-}
-
-static void __ns_list_release(struct list_head *head);
-
-/**
- * destroy_namespace - remove everything contained by @ns
- * @ns: namespace to have it contents removed  (NOT NULL)
- */
-static void destroy_namespace(struct aa_namespace *ns)
-{
-	if (!ns)
-		return;
-
-	write_lock(&ns->lock);
-	/* release all profiles in this namespace */
-	__profile_list_release(&ns->base.profiles);
-
-	/* release all sub namespaces */
-	__ns_list_release(&ns->sub_ns);
-
-	write_unlock(&ns->lock);
-}
-
-/**
- * __remove_namespace - remove a namespace and all its children
- * @ns: namespace to be removed  (NOT NULL)
- *
- * Requires: ns->parent->lock be held and ns removed from parent.
- */
-static void __remove_namespace(struct aa_namespace *ns)
-{
-	struct aa_profile *unconfined = ns->unconfined;
-
-	/* remove ns from namespace list */
-	list_del_init(&ns->base.list);
-
-	/*
-	 * break the ns, unconfined profile cyclic reference and forward
-	 * all new unconfined profiles requests to the parent namespace
-	 * This will result in all confined tasks that have a profile
-	 * being removed, inheriting the parent->unconfined profile.
-	 */
-	if (ns->parent)
-		ns->unconfined = aa_get_profile(ns->parent->unconfined);
-
-	destroy_namespace(ns);
-
-	/* release original ns->unconfined ref */
-	aa_put_profile(unconfined);
-	/* release ns->base.list ref, from removal above */
-	aa_put_namespace(ns);
-}
-
-/**
- * __ns_list_release - remove all profile namespaces on the list put refs
- * @head: list of profile namespaces  (NOT NULL)
- *
- * Requires: namespace lock be held
- */
-static void __ns_list_release(struct list_head *head)
-{
-	struct aa_namespace *ns, *tmp;
-	list_for_each_entry_safe(ns, tmp, head, base.list)
-		__remove_namespace(ns);
-
-}
-
-/**
- * aa_alloc_root_ns - allocate the root profile namespace
- *
- * Returns: %0 on success else error
- *
- */
-int __init aa_alloc_root_ns(void)
-{
-	/* released by aa_free_root_ns - used as list ref*/
-	root_ns = alloc_namespace(NULL, "root");
-	if (!root_ns)
-		return -ENOMEM;
-
-	return 0;
-}
-
- /**
-  * aa_free_root_ns - free the root profile namespace
-  */
-void __init aa_free_root_ns(void)
- {
-	 struct aa_namespace *ns = root_ns;
-	 root_ns = NULL;
-
-	 destroy_namespace(ns);
-	 aa_put_namespace(ns);
-}
-
-/**
- * aa_alloc_profile - allocate, initialize and return a new profile
- * @hname: name of the profile  (NOT NULL)
- *
- * Returns: refcount profile or NULL on failure
- */
-struct aa_profile *aa_alloc_profile(const char *hname)
-{
-	struct aa_profile *profile;
-
-	/* freed by free_profile - usually through aa_put_profile */
-	profile = kzalloc(sizeof(*profile), GFP_KERNEL);
-	if (!profile)
-		return NULL;
-
-	if (!policy_init(&profile->base, NULL, hname)) {
-		kzfree(profile);
-		return NULL;
-	}
-
-	/* refcount released by caller */
-	return profile;
-}
-
-/**
- * aa_new_null_profile - create a new null-X learning profile
- * @parent: profile that caused this profile to be created (NOT NULL)
- * @hat: true if the null- learning profile is a hat
- *
- * Create a null- complain mode profile used in learning mode.  The name of
- * the profile is unique and follows the format of parent//null-sid.
- *
- * null profiles are added to the profile list but the list does not
- * hold a count on them so that they are automatically released when
- * not in use.
- *
- * Returns: new refcounted profile else NULL on failure
- */
-struct aa_profile *aa_new_null_profile(struct aa_profile *parent, int hat)
-{
-	struct aa_profile *profile = NULL;
-	char *name;
-	u32 sid = aa_alloc_sid();
-
-	/* freed below */
-	name = kmalloc(strlen(parent->base.hname) + 2 + 7 + 8, GFP_KERNEL);
-	if (!name)
-		goto fail;
-	sprintf(name, "%s//null-%x", parent->base.hname, sid);
-
-	profile = aa_alloc_profile(name);
-	kfree(name);
-	if (!profile)
-		goto fail;
-
-	profile->sid = sid;
-	profile->mode = APPARMOR_COMPLAIN;
-	profile->flags = PFLAG_NULL;
-	if (hat)
-		profile->flags |= PFLAG_HAT;
-
-	/* released on free_profile */
-	profile->parent = aa_get_profile(parent);
-	profile->ns = aa_get_namespace(parent->ns);
-
-	write_lock(&profile->ns->lock);
-	__list_add_profile(&parent->base.profiles, profile);
-	write_unlock(&profile->ns->lock);
-
-	/* refcount released by caller */
-	return profile;
-
-fail:
-	aa_free_sid(sid);
-	return NULL;
-}
-
-/**
- * free_profile - free a profile
- * @profile: the profile to free  (MAYBE NULL)
- *
- * Free a profile, its hats and null_profile. All references to the profile,
- * its hats and null_profile must have been put.
- *
- * If the profile was referenced from a task context, free_profile() will
- * be called from an rcu callback routine, so we must not sleep here.
- */
-static void free_profile(struct aa_profile *profile)
-{
-	AA_DEBUG("%s(%p)\n", __func__, profile);
-
-	if (!profile)
-		return;
-
-	if (!list_empty(&profile->base.list)) {
-		AA_ERROR("%s: internal error, "
-			 "profile '%s' still on ns list\n",
-			 __func__, profile->base.name);
-		BUG();
-	}
-
-	/* free children profiles */
-	policy_destroy(&profile->base);
-	aa_put_profile(profile->parent);
-
-	aa_put_namespace(profile->ns);
-	kzfree(profile->rename);
-
-	aa_free_file_rules(&profile->file);
-	aa_free_cap_rules(&profile->caps);
-	aa_free_rlimit_rules(&profile->rlimits);
-
-	aa_free_sid(profile->sid);
-	aa_put_dfa(profile->xmatch);
-	aa_put_dfa(profile->policy.dfa);
-
-	aa_put_profile(profile->replacedby);
-
-	kzfree(profile);
-}
-
-/**
- * aa_free_profile_kref - free aa_profile by kref (called by aa_put_profile)
- * @kr: kref callback for freeing of a profile  (NOT NULL)
- */
-void aa_free_profile_kref(struct kref *kref)
-{
-	struct aa_profile *p = container_of(kref, struct aa_profile,
-					    base.count);
-
-	free_profile(p);
-}
-
-/* TODO: profile accounting - setup in remove */
-
-/**
- * __find_child - find a profile on @head list with a name matching @name
- * @head: list to search  (NOT NULL)
- * @name: name of profile (NOT NULL)
- *
- * Requires: ns lock protecting list be held
- *
- * Returns: unrefcounted profile ptr, or NULL if not found
- */
-static struct aa_profile *__find_child(struct list_head *head, const char *name)
-{
-	return (struct aa_profile *)__policy_find(head, name);
-}
-
-/**
- * __strn_find_child - find a profile on @head list using substring of @name
- * @head: list to search  (NOT NULL)
- * @name: name of profile (NOT NULL)
- * @len: length of @name substring to match
- *
- * Requires: ns lock protecting list be held
- *
- * Returns: unrefcounted profile ptr, or NULL if not found
- */
-static struct aa_profile *__strn_find_child(struct list_head *head,
-					    const char *name, int len)
-{
-	return (struct aa_profile *)__policy_strn_find(head, name, len);
-}
-
-/**
- * aa_find_child - find a profile by @name in @parent
- * @parent: profile to search  (NOT NULL)
- * @name: profile name to search for  (NOT NULL)
- *
- * Returns: a refcounted profile or NULL if not found
- */
-struct aa_profile *aa_find_child(struct aa_profile *parent, const char *name)
-{
-	struct aa_profile *profile;
-
-	read_lock(&parent->ns->lock);
-	profile = aa_get_profile(__find_child(&parent->base.profiles, name));
-	read_unlock(&parent->ns->lock);
-
-	/* refcount released by caller */
-	return profile;
-}
-
-/**
- * __lookup_parent - lookup the parent of a profile of name @hname
- * @ns: namespace to lookup profile in  (NOT NULL)
- * @hname: hierarchical profile name to find parent of  (NOT NULL)
- *
- * Lookups up the parent of a fully qualified profile name, the profile
- * that matches hname does not need to exist, in general this
- * is used to load a new profile.
- *
- * Requires: ns->lock be held
- *
- * Returns: unrefcounted policy or NULL if not found
- */
-static struct aa_policy *__lookup_parent(struct aa_namespace *ns,
-					 const char *hname)
-{
-	struct aa_policy *policy;
-	struct aa_profile *profile = NULL;
-	char *split;
-
-	policy = &ns->base;
-
-	for (split = strstr(hname, "//"); split;) {
-		profile = __strn_find_child(&policy->profiles, hname,
-					    split - hname);
-		if (!profile)
-			return NULL;
-		policy = &profile->base;
-		hname = split + 2;
-		split = strstr(hname, "//");
-	}
-	if (!profile)
-		return &ns->base;
-	return &profile->base;
-}
-
-/**
- * __lookup_profile - lookup the profile matching @hname
- * @base: base list to start looking up profile name from  (NOT NULL)
- * @hname: hierarchical profile name  (NOT NULL)
- *
- * Requires: ns->lock be held
- *
- * Returns: unrefcounted profile pointer or NULL if not found
- *
- * Do a relative name lookup, recursing through profile tree.
- */
-static struct aa_profile *__lookup_profile(struct aa_policy *base,
-					   const char *hname)
-{
-	struct aa_profile *profile = NULL;
-	char *split;
-
-	for (split = strstr(hname, "//"); split;) {
-		profile = __strn_find_child(&base->profiles, hname,
-					    split - hname);
-		if (!profile)
-			return NULL;
-
-		base = &profile->base;
-		hname = split + 2;
-		split = strstr(hname, "//");
-	}
-
-	profile = __find_child(&base->profiles, hname);
-
-	return profile;
-}
-
-/**
- * aa_lookup_profile - find a profile by its full or partial name
- * @ns: the namespace to start from (NOT NULL)
- * @hname: name to do lookup on.  Does not contain namespace prefix (NOT NULL)
- *
- * Returns: refcounted profile or NULL if not found
- */
-struct aa_profile *aa_lookup_profile(struct aa_namespace *ns, const char *hname)
-{
-	struct aa_profile *profile;
-
-	read_lock(&ns->lock);
-	profile = aa_get_profile(__lookup_profile(&ns->base, hname));
-	read_unlock(&ns->lock);
-
-	/* refcount released by caller */
-	return profile;
-}
-
-/**
- * replacement_allowed - test to see if replacement is allowed
- * @profile: profile to test if it can be replaced  (MAYBE NULL)
- * @noreplace: true if replacement shouldn't be allowed but addition is okay
- * @info: Returns - info about why replacement failed (NOT NULL)
- *
- * Returns: %0 if replacement allowed else error code
- */
-static int replacement_allowed(struct aa_profile *profile, int noreplace,
-			       const char **info)
-{
-	if (profile) {
-		if (profile->flags & PFLAG_IMMUTABLE) {
-			*info = "cannot replace immutible profile";
-			return -EPERM;
-		} else if (noreplace) {
-			*info = "profile already exists";
-			return -EEXIST;
-		}
-	}
-	return 0;
-}
-
-/**
- * __add_new_profile - simple wrapper around __list_add_profile
- * @ns: namespace that profile is being added to  (NOT NULL)
- * @policy: the policy container to add the profile to  (NOT NULL)
- * @profile: profile to add  (NOT NULL)
- *
- * add a profile to a list and do other required basic allocations
- */
-static void __add_new_profile(struct aa_namespace *ns, struct aa_policy *policy,
-			      struct aa_profile *profile)
-{
-	if (policy != &ns->base)
-		/* released on profile replacement or free_profile */
-		profile->parent = aa_get_profile((struct aa_profile *) policy);
-	__list_add_profile(&policy->profiles, profile);
-	/* released on free_profile */
-	profile->sid = aa_alloc_sid();
-	profile->ns = aa_get_namespace(ns);
-}
-
-/**
- * aa_audit_policy - Do auditing of policy changes
- * @op: policy operation being performed
- * @gfp: memory allocation flags
- * @name: name of profile being manipulated (NOT NULL)
- * @info: any extra information to be audited (MAYBE NULL)
- * @error: error code
- *
- * Returns: the error to be returned after audit is done
- */
-static int audit_policy(int op, gfp_t gfp, const char *name, const char *info,
-			int error)
-{
-	struct common_audit_data sa;
-	struct apparmor_audit_data aad = {0,};
-	COMMON_AUDIT_DATA_INIT(&sa, NONE);
-	sa.aad = &aad;
-	aad.op = op;
-	aad.name = name;
-	aad.info = info;
-	aad.error = error;
-
-	return aa_audit(AUDIT_APPARMOR_STATUS, __aa_current_profile(), gfp,
-			&sa, NULL);
-}
-
-/**
- * aa_may_manage_policy - can the current task manage policy
- * @op: the policy manipulation operation being done
- *
- * Returns: true if the task is allowed to manipulate policy
- */
-bool aa_may_manage_policy(int op)
-{
-	/* check if loading policy is locked out */
-	if (aa_g_lock_policy) {
-		audit_policy(op, GFP_KERNEL, NULL, "policy_locked", -EACCES);
-		return 0;
-	}
-
-	if (!capable(CAP_MAC_ADMIN)) {
-		audit_policy(op, GFP_KERNEL, NULL, "not policy admin", -EACCES);
-		return 0;
-	}
-
-	return 1;
-}
-
-/**
- * aa_replace_profiles - replace profile(s) on the profile list
- * @udata: serialized data stream  (NOT NULL)
- * @size: size of the serialized data stream
- * @noreplace: true if only doing addition, no replacement allowed
- *
- * unpack and replace a profile on the profile list and uses of that profile
- * by any aa_task_cxt.  If the profile does not exist on the profile list
- * it is added.
- *
- * Returns: size of data consumed else error code on failure.
- */
-ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace)
-{
-	struct aa_policy *policy;
-	struct aa_profile *old_profile = NULL, *new_profile = NULL;
-	struct aa_profile *rename_profile = NULL;
-	struct aa_namespace *ns = NULL;
-	const char *ns_name, *name = NULL, *info = NULL;
-	int op = OP_PROF_REPL;
-	ssize_t error;
-
-	/* released below */
-	new_profile = aa_unpack(udata, size, &ns_name);
-	if (IS_ERR(new_profile)) {
-		error = PTR_ERR(new_profile);
-		new_profile = NULL;
-		goto fail;
-	}
-
-	/* released below */
-	ns = aa_prepare_namespace(ns_name);
-	if (!ns) {
-		info = "failed to prepare namespace";
-		error = -ENOMEM;
-		name = ns_name;
-		goto fail;
-	}
-
-	name = new_profile->base.hname;
-
-	write_lock(&ns->lock);
-	/* no ref on policy only use inside lock */
-	policy = __lookup_parent(ns, new_profile->base.hname);
-
-	if (!policy) {
-		info = "parent does not exist";
-		error = -ENOENT;
-		goto audit;
-	}
-
-	old_profile = __find_child(&policy->profiles, new_profile->base.name);
-	/* released below */
-	aa_get_profile(old_profile);
-
-	if (new_profile->rename) {
-		rename_profile = __lookup_profile(&ns->base,
-						  new_profile->rename);
-		/* released below */
-		aa_get_profile(rename_profile);
-
-		if (!rename_profile) {
-			info = "profile to rename does not exist";
-			name = new_profile->rename;
-			error = -ENOENT;
-			goto audit;
-		}
-	}
-
-	error = replacement_allowed(old_profile, noreplace, &info);
-	if (error)
-		goto audit;
-
-	error = replacement_allowed(rename_profile, noreplace, &info);
-	if (error)
-		goto audit;
-
-audit:
-	if (!old_profile && !rename_profile)
-		op = OP_PROF_LOAD;
-
-	error = audit_policy(op, GFP_ATOMIC, name, info, error);
-
-	if (!error) {
-		if (rename_profile)
-			__replace_profile(rename_profile, new_profile);
-		if (old_profile) {
-			/* when there are both rename and old profiles
-			 * inherit old profiles sid
-			 */
-			if (rename_profile)
-				aa_free_sid(new_profile->sid);
-			__replace_profile(old_profile, new_profile);
-		}
-		if (!(old_profile || rename_profile))
-			__add_new_profile(ns, policy, new_profile);
-	}
-	write_unlock(&ns->lock);
-
-out:
-	aa_put_namespace(ns);
-	aa_put_profile(rename_profile);
-	aa_put_profile(old_profile);
-	aa_put_profile(new_profile);
-	if (error)
-		return error;
-	return size;
-
-fail:
-	error = audit_policy(op, GFP_KERNEL, name, info, error);
-	goto out;
-}
-
-/**
- * aa_remove_profiles - remove profile(s) from the system
- * @fqname: name of the profile or namespace to remove  (NOT NULL)
- * @size: size of the name
- *
- * Remove a profile or sub namespace from the current namespace, so that
- * they can not be found anymore and mark them as replaced by unconfined
- *
- * NOTE: removing confinement does not restore rlimits to preconfinemnet values
- *
- * Returns: size of data consume else error code if fails
- */
-ssize_t aa_remove_profiles(char *fqname, size_t size)
-{
-	struct aa_namespace *root, *ns = NULL;
-	struct aa_profile *profile = NULL;
-	const char *name = fqname, *info = NULL;
-	ssize_t error = 0;
-
-	if (*fqname == 0) {
-		info = "no profile specified";
-		error = -ENOENT;
-		goto fail;
-	}
-
-	root = aa_current_profile()->ns;
-
-	if (fqname[0] == ':') {
-		char *ns_name;
-		name = aa_split_fqname(fqname, &ns_name);
-		if (ns_name) {
-			/* released below */
-			ns = aa_find_namespace(root, ns_name);
-			if (!ns) {
-				info = "namespace does not exist";
-				error = -ENOENT;
-				goto fail;
-			}
-		}
-	} else
-		/* released below */
-		ns = aa_get_namespace(root);
-
-	if (!name) {
-		/* remove namespace - can only happen if fqname[0] == ':' */
-		write_lock(&ns->parent->lock);
-		__remove_namespace(ns);
-		write_unlock(&ns->parent->lock);
-	} else {
-		/* remove profile */
-		write_lock(&ns->lock);
-		profile = aa_get_profile(__lookup_profile(&ns->base, name));
-		if (!profile) {
-			error = -ENOENT;
-			info = "profile does not exist";
-			goto fail_ns_lock;
-		}
-		name = profile->base.hname;
-		__remove_profile(profile);
-		write_unlock(&ns->lock);
-	}
-
-	/* don't fail removal if audit fails */
-	(void) audit_policy(OP_PROF_RM, GFP_KERNEL, name, info, error);
-	aa_put_namespace(ns);
-	aa_put_profile(profile);
-	return size;
-
-fail_ns_lock:
-	write_unlock(&ns->lock);
-	aa_put_namespace(ns);
-
-fail:
-	(void) audit_policy(OP_PROF_RM, GFP_KERNEL, name, info, error);
-	return error;
-}