From 7762fbfffdbce8191f5236d5053b290035d3d749 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Mon, 10 May 2010 17:30:26 +0900 Subject: TOMOYO: Add pathname grouping support. This patch adds pathname grouping support, which is useful for grouping pathnames that cannot be represented using /\{dir\}/ pattern. Signed-off-by: Tetsuo Handa Signed-off-by: James Morris --- security/tomoyo/gc.c | 48 +++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 3 deletions(-) (limited to 'security/tomoyo/gc.c') diff --git a/security/tomoyo/gc.c b/security/tomoyo/gc.c index 245bf422e3a..b9cc71b0431 100644 --- a/security/tomoyo/gc.c +++ b/security/tomoyo/gc.c @@ -12,6 +12,8 @@ #include 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: @@ -149,6 +151,17 @@ 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) { if (mutex_lock_interruptible(&tomoyo_policy_lock)) @@ -293,6 +306,29 @@ static void tomoyo_collect_entry(void) } } } + { + 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); } @@ -334,6 +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; -- cgit v1.2.3