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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2010-05-10 17:30:26 +0900
committerJames Morris <jmorris@namei.org>2010-05-17 09:25:57 +1000
commit7762fbfffdbce8191f5236d5053b290035d3d749 (patch)
tree08b6de0c09c5571d3bdb61c429e1ec68e748f796 /security/tomoyo/gc.c
parentba0c1709f4946a5ca1a678f4318ed72c0d409b3c (diff)
downloadlinux-7762fbfffdbce8191f5236d5053b290035d3d749.tar.gz
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 <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/gc.c')
-rw-r--r--security/tomoyo/gc.c48
1 files changed, 45 insertions, 3 deletions
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 <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:
@@ -149,6 +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;