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TOMOYO: Pass "struct list_head" rather than "void *".
Pass "struct list_head" to tomoyo_add_to_gc() and bring list_del_rcu() to tomoyo_add_to_gc(). 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
James Morris
parent
8fbe71f0e0
commit
e79acf0ef4
@ -33,13 +33,13 @@ enum tomoyo_policy_id {
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struct tomoyo_gc_entry {
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struct list_head list;
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int type;
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void *element;
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struct list_head *element;
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};
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static LIST_HEAD(tomoyo_gc_queue);
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static DEFINE_MUTEX(tomoyo_gc_mutex);
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/* Caller holds tomoyo_policy_lock mutex. */
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static bool tomoyo_add_to_gc(const int type, void *element)
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static bool tomoyo_add_to_gc(const int type, struct list_head *element)
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{
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struct tomoyo_gc_entry *entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
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if (!entry)
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@ -47,57 +47,74 @@ static bool tomoyo_add_to_gc(const int type, void *element)
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entry->type = type;
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entry->element = element;
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list_add(&entry->list, &tomoyo_gc_queue);
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list_del_rcu(element);
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return true;
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}
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static void tomoyo_del_allow_read
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(struct tomoyo_globally_readable_file_entry *ptr)
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static void tomoyo_del_allow_read(struct list_head *element)
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{
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struct tomoyo_globally_readable_file_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->filename);
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}
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static void tomoyo_del_file_pattern(struct tomoyo_pattern_entry *ptr)
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static void tomoyo_del_file_pattern(struct list_head *element)
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{
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struct tomoyo_pattern_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->pattern);
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}
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static void tomoyo_del_no_rewrite(struct tomoyo_no_rewrite_entry *ptr)
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static void tomoyo_del_no_rewrite(struct list_head *element)
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{
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struct tomoyo_no_rewrite_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->pattern);
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}
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static void tomoyo_del_domain_initializer
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(struct tomoyo_domain_initializer_entry *ptr)
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static void tomoyo_del_domain_initializer(struct list_head *element)
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{
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struct tomoyo_domain_initializer_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->domainname);
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tomoyo_put_name(ptr->program);
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}
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static void tomoyo_del_domain_keeper(struct tomoyo_domain_keeper_entry *ptr)
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static void tomoyo_del_domain_keeper(struct list_head *element)
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{
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struct tomoyo_domain_keeper_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->domainname);
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tomoyo_put_name(ptr->program);
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}
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static void tomoyo_del_aggregator(struct tomoyo_aggregator_entry *ptr)
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static void tomoyo_del_aggregator(struct list_head *element)
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{
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struct tomoyo_aggregator_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->original_name);
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tomoyo_put_name(ptr->aggregated_name);
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}
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static void tomoyo_del_alias(struct tomoyo_alias_entry *ptr)
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static void tomoyo_del_alias(struct list_head *element)
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{
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struct tomoyo_alias_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->original_name);
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tomoyo_put_name(ptr->aliased_name);
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}
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static void tomoyo_del_manager(struct tomoyo_policy_manager_entry *ptr)
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static void tomoyo_del_manager(struct list_head *element)
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{
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struct tomoyo_policy_manager_entry *ptr =
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container_of(element, typeof(*ptr), head.list);
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tomoyo_put_name(ptr->manager);
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}
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static void tomoyo_del_acl(struct tomoyo_acl_info *acl)
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static void tomoyo_del_acl(struct list_head *element)
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{
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struct tomoyo_acl_info *acl =
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container_of(element, typeof(*acl), list);
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switch (acl->type) {
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case TOMOYO_TYPE_PATH_ACL:
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{
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@ -142,14 +159,13 @@ static void tomoyo_del_acl(struct tomoyo_acl_info *acl)
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tomoyo_put_number_union(&entry->flags);
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}
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break;
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default:
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printk(KERN_WARNING "Unknown type\n");
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break;
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}
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}
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static bool tomoyo_del_domain(struct tomoyo_domain_info *domain)
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static bool tomoyo_del_domain(struct list_head *element)
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{
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struct tomoyo_domain_info *domain =
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container_of(element, typeof(*domain), list);
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struct tomoyo_acl_info *acl;
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struct tomoyo_acl_info *tmp;
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/*
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@ -177,7 +193,7 @@ static bool tomoyo_del_domain(struct tomoyo_domain_info *domain)
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if (atomic_read(&domain->users))
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return false;
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list_for_each_entry_safe(acl, tmp, &domain->acl_info_list, list) {
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tomoyo_del_acl(acl);
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tomoyo_del_acl(&acl->list);
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tomoyo_memory_free(acl);
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}
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tomoyo_put_name(domain->domainname);
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@ -185,28 +201,36 @@ static bool tomoyo_del_domain(struct tomoyo_domain_info *domain)
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}
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static void tomoyo_del_name(const struct tomoyo_name_entry *ptr)
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static void tomoyo_del_name(struct list_head *element)
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{
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const struct tomoyo_name_entry *ptr =
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container_of(element, typeof(*ptr), list);
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}
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static void tomoyo_del_path_group_member(struct tomoyo_path_group_member
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*member)
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static void tomoyo_del_path_group_member(struct list_head *element)
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{
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struct tomoyo_path_group_member *member =
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container_of(element, typeof(*member), head.list);
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tomoyo_put_name(member->member_name);
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}
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static void tomoyo_del_path_group(struct tomoyo_path_group *group)
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static void tomoyo_del_path_group(struct list_head *element)
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{
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struct tomoyo_path_group *group =
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container_of(element, typeof(*group), list);
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tomoyo_put_name(group->group_name);
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}
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static void tomoyo_del_number_group_member(struct tomoyo_number_group_member
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*member)
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static void tomoyo_del_number_group_member(struct list_head *element)
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{
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struct tomoyo_number_group_member *member =
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container_of(element, typeof(*member), head.list);
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}
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static void tomoyo_del_number_group(struct tomoyo_number_group *group)
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static void tomoyo_del_number_group(struct list_head *element)
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{
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struct tomoyo_number_group *group =
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container_of(element, typeof(*group), list);
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tomoyo_put_name(group->group_name);
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}
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@ -229,7 +253,6 @@ static bool tomoyo_collect_member(struct list_head *member_list, int id)
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continue;
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if (!tomoyo_add_to_gc(id, &member->list))
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return false;
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list_del_rcu(&member->list);
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}
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return true;
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}
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@ -242,7 +265,6 @@ static bool tomoyo_collect_acl(struct tomoyo_domain_info *domain)
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continue;
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if (!tomoyo_add_to_gc(TOMOYO_ID_ACL, &acl->list))
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return false;
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list_del_rcu(&acl->list);
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}
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return true;
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}
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@ -269,9 +291,7 @@ static void tomoyo_collect_entry(void)
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* refer this domain after successful execve().
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* We recheck domain->users after SRCU synchronization.
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*/
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if (tomoyo_add_to_gc(TOMOYO_ID_DOMAIN, domain))
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list_del_rcu(&domain->list);
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else
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if (!tomoyo_add_to_gc(TOMOYO_ID_DOMAIN, &domain->list))
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goto unlock;
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}
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}
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@ -280,9 +300,7 @@ static void tomoyo_collect_entry(void)
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list_for_each_entry_rcu(ptr, &tomoyo_name_list[i], list) {
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if (atomic_read(&ptr->users))
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_NAME, ptr))
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list_del_rcu(&ptr->list);
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else
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if (!tomoyo_add_to_gc(TOMOYO_ID_NAME, &ptr->list))
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goto unlock;
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}
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}
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@ -294,9 +312,8 @@ static void tomoyo_collect_entry(void)
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if (!list_empty(&group->member_list) ||
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atomic_read(&group->users))
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_PATH_GROUP, group))
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list_del_rcu(&group->list);
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else
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if (!tomoyo_add_to_gc(TOMOYO_ID_PATH_GROUP,
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&group->list))
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goto unlock;
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}
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}
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@ -309,9 +326,8 @@ static void tomoyo_collect_entry(void)
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if (!list_empty(&group->member_list) ||
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atomic_read(&group->users))
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP, group))
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list_del_rcu(&group->list);
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else
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if (!tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP,
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&group->list))
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goto unlock;
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}
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}
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@ -325,58 +341,56 @@ static void tomoyo_kfree_entry(void)
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struct tomoyo_gc_entry *tmp;
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list_for_each_entry_safe(p, tmp, &tomoyo_gc_queue, list) {
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struct list_head *element = p->element;
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switch (p->type) {
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case TOMOYO_ID_DOMAIN_INITIALIZER:
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tomoyo_del_domain_initializer(p->element);
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tomoyo_del_domain_initializer(element);
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break;
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case TOMOYO_ID_DOMAIN_KEEPER:
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tomoyo_del_domain_keeper(p->element);
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tomoyo_del_domain_keeper(element);
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break;
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case TOMOYO_ID_AGGREGATOR:
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tomoyo_del_aggregator(p->element);
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tomoyo_del_aggregator(element);
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break;
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case TOMOYO_ID_ALIAS:
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tomoyo_del_alias(p->element);
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tomoyo_del_alias(element);
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break;
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case TOMOYO_ID_GLOBALLY_READABLE:
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tomoyo_del_allow_read(p->element);
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tomoyo_del_allow_read(element);
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break;
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case TOMOYO_ID_PATTERN:
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tomoyo_del_file_pattern(p->element);
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tomoyo_del_file_pattern(element);
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break;
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case TOMOYO_ID_NO_REWRITE:
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tomoyo_del_no_rewrite(p->element);
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tomoyo_del_no_rewrite(element);
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break;
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case TOMOYO_ID_MANAGER:
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tomoyo_del_manager(p->element);
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tomoyo_del_manager(element);
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break;
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case TOMOYO_ID_NAME:
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tomoyo_del_name(p->element);
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tomoyo_del_name(element);
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break;
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case TOMOYO_ID_ACL:
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tomoyo_del_acl(p->element);
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tomoyo_del_acl(element);
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break;
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case TOMOYO_ID_DOMAIN:
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if (!tomoyo_del_domain(p->element))
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if (!tomoyo_del_domain(element))
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continue;
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break;
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case TOMOYO_ID_PATH_GROUP_MEMBER:
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tomoyo_del_path_group_member(p->element);
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tomoyo_del_path_group_member(element);
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break;
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case TOMOYO_ID_PATH_GROUP:
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tomoyo_del_path_group(p->element);
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tomoyo_del_path_group(element);
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break;
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case TOMOYO_ID_NUMBER_GROUP_MEMBER:
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tomoyo_del_number_group_member(p->element);
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tomoyo_del_number_group_member(element);
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break;
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case TOMOYO_ID_NUMBER_GROUP:
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tomoyo_del_number_group(p->element);
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break;
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default:
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printk(KERN_WARNING "Unknown type\n");
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tomoyo_del_number_group(element);
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break;
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}
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tomoyo_memory_free(p->element);
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tomoyo_memory_free(element);
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list_del(&p->list);
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kfree(p);
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}
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