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-rw-r--r--security/tomoyo/gc.c55
1 files changed, 48 insertions, 7 deletions
diff --git a/security/tomoyo/gc.c b/security/tomoyo/gc.c
index d9ad35bc7fa8..b9cc71b04314 100644
--- a/security/tomoyo/gc.c
+++ b/security/tomoyo/gc.c
@@ -12,6 +12,8 @@
#include <linux/slab.h>
enum tomoyo_gc_id {
+ TOMOYO_ID_PATH_GROUP,
+ TOMOYO_ID_PATH_GROUP_MEMBER,
TOMOYO_ID_DOMAIN_INITIALIZER,
TOMOYO_ID_DOMAIN_KEEPER,
TOMOYO_ID_ALIAS,
@@ -91,15 +93,15 @@ static void tomoyo_del_acl(struct tomoyo_acl_info *acl)
{
struct tomoyo_path_acl *entry
= container_of(acl, typeof(*entry), head);
- tomoyo_put_name(entry->filename);
+ tomoyo_put_name_union(&entry->name);
}
break;
case TOMOYO_TYPE_PATH2_ACL:
{
struct tomoyo_path2_acl *entry
= container_of(acl, typeof(*entry), head);
- tomoyo_put_name(entry->filename1);
- tomoyo_put_name(entry->filename2);
+ tomoyo_put_name_union(&entry->name1);
+ tomoyo_put_name_union(&entry->name2);
}
break;
default:
@@ -149,9 +151,21 @@ static void tomoyo_del_name(const struct tomoyo_name_entry *ptr)
{
}
+static void tomoyo_del_path_group_member(struct tomoyo_path_group_member
+ *member)
+{
+ tomoyo_put_name(member->member_name);
+}
+
+static void tomoyo_del_path_group(struct tomoyo_path_group *group)
+{
+ tomoyo_put_name(group->group_name);
+}
+
static void tomoyo_collect_entry(void)
{
- mutex_lock(&tomoyo_policy_lock);
+ if (mutex_lock_interruptible(&tomoyo_policy_lock))
+ return;
{
struct tomoyo_globally_readable_file_entry *ptr;
list_for_each_entry_rcu(ptr, &tomoyo_globally_readable_list,
@@ -275,8 +289,6 @@ static void tomoyo_collect_entry(void)
break;
}
}
- mutex_unlock(&tomoyo_policy_lock);
- mutex_lock(&tomoyo_name_list_lock);
{
int i;
for (i = 0; i < TOMOYO_MAX_HASH; i++) {
@@ -294,7 +306,30 @@ static void tomoyo_collect_entry(void)
}
}
}
- mutex_unlock(&tomoyo_name_list_lock);
+ {
+ struct tomoyo_path_group *group;
+ list_for_each_entry_rcu(group, &tomoyo_path_group_list, list) {
+ struct tomoyo_path_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_PATH_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_PATH_GROUP, group))
+ list_del_rcu(&group->list);
+ else
+ break;
+ }
+ }
+ mutex_unlock(&tomoyo_policy_lock);
}
static void tomoyo_kfree_entry(void)
@@ -335,6 +370,12 @@ static void tomoyo_kfree_entry(void)
if (!tomoyo_del_domain(p->element))
continue;
break;
+ case TOMOYO_ID_PATH_GROUP_MEMBER:
+ tomoyo_del_path_group_member(p->element);
+ break;
+ case TOMOYO_ID_PATH_GROUP:
+ tomoyo_del_path_group(p->element);
+ break;
default:
printk(KERN_WARNING "Unknown type\n");
break;