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TOMOYO: Add numeric values grouping support.

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This patch adds numeric values grouping support, which is useful for grouping
numeric values such as file's UID, DAC's mode, ioctl()'s cmd number.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa
2010-05-17 10:06:58 +09:00
committed by James Morris
parent babcd37821
commit 4c3e9e2ded
6 changed files with 454 additions and 1 deletions
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security/tomoyo/gc.c
+41
View File
@@ -14,6 +14,8 @@
enum tomoyo_gc_id {
TOMOYO_ID_PATH_GROUP,
TOMOYO_ID_PATH_GROUP_MEMBER,
TOMOYO_ID_NUMBER_GROUP,
TOMOYO_ID_NUMBER_GROUP_MEMBER,
TOMOYO_ID_DOMAIN_INITIALIZER,
TOMOYO_ID_DOMAIN_KEEPER,
TOMOYO_ID_ALIAS,
@@ -162,6 +164,16 @@ static void tomoyo_del_path_group(struct tomoyo_path_group *group)
tomoyo_put_name(group->group_name);
}
static void tomoyo_del_number_group_member(struct tomoyo_number_group_member
*member)
{
}
static void tomoyo_del_number_group(struct tomoyo_number_group *group)
{
tomoyo_put_name(group->group_name);
}
static void tomoyo_collect_entry(void)
{
if (mutex_lock_interruptible(&tomoyo_policy_lock))
@@ -329,6 +341,29 @@ static void tomoyo_collect_entry(void)
break;
}
}
{
struct tomoyo_number_group *group;
list_for_each_entry_rcu(group, &tomoyo_number_group_list, list) {
struct tomoyo_number_group_member *member;
list_for_each_entry_rcu(member, &group->member_list,
list) {
if (!member->is_deleted)
continue;
if (tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP_MEMBER,
member))
list_del_rcu(&member->list);
else
break;
}
if (!list_empty(&group->member_list) ||
atomic_read(&group->users))
continue;
if (tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP, group))
list_del_rcu(&group->list);
else
break;
}
}
mutex_unlock(&tomoyo_policy_lock);
}
@@ -376,6 +411,12 @@ static void tomoyo_kfree_entry(void)
case TOMOYO_ID_PATH_GROUP:
tomoyo_del_path_group(p->element);
break;
case TOMOYO_ID_NUMBER_GROUP_MEMBER:
tomoyo_del_number_group_member(p->element);
break;
case TOMOYO_ID_NUMBER_GROUP:
tomoyo_del_number_group(p->element);
break;
default:
printk(KERN_WARNING "Unknown type\n");
break;