TOMOYO: Merge tomoyo_path_group and tomoyo_number_group

"struct tomoyo_path_group" and "struct tomoyo_number_group" are identical.
Rename tomoyo_path_group/tomoyo_number_group to tomoyo_group and
tomoyo_path_group_member to tomoyo_path_group and
tomoyo_number_group_member to tomoyo_unmber_group.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

5 files changed, 59 insertions, 84 deletions

diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index e0c4ae11bf6c..9f289e412a63 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -291,28 +291,20 @@ struct tomoyo_name_entry {
 
 struct tomoyo_name_union {
 	const struct tomoyo_path_info *filename;
-	struct tomoyo_path_group *group;
+	struct tomoyo_group *group;
 	u8 is_group;
 };
 
 struct tomoyo_number_union {
 	unsigned long values[2];
-	struct tomoyo_number_group *group;
+	struct tomoyo_group *group;
 	u8 min_type;
 	u8 max_type;
 	u8 is_group;
 };
 
-/* Structure for "path_group" directive. */
-struct tomoyo_path_group {
-	struct list_head list;
-	const struct tomoyo_path_info *group_name;
-	struct list_head member_list;
-	atomic_t users;
-};
-
-/* Structure for "number_group" directive. */
-struct tomoyo_number_group {
+/* Structure for "path_group"/"number_group" directive. */
+struct tomoyo_group {
 	struct list_head list;
 	const struct tomoyo_path_info *group_name;
 	struct list_head member_list;
@@ -320,13 +312,13 @@ struct tomoyo_number_group {
 };
 
 /* Structure for "path_group" directive. */
-struct tomoyo_path_group_member {
+struct tomoyo_path_group {
 	struct tomoyo_acl_head head;
 	const struct tomoyo_path_info *member_name;
 };
 
 /* Structure for "number_group" directive. */
-struct tomoyo_number_group_member {
+struct tomoyo_number_group {
 	struct tomoyo_acl_head head;
 	struct tomoyo_number_union number;
 };
@@ -766,11 +758,11 @@ bool tomoyo_parse_name_union(const char *filename,
 			     struct tomoyo_name_union *ptr);
 /* Check whether the given filename matches the given path_group. */
 bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
-			       const struct tomoyo_path_group *group);
+			       const struct tomoyo_group *group);
 /* Check whether the given value matches the given number_group. */
 bool tomoyo_number_matches_group(const unsigned long min,
 				 const unsigned long max,
-				 const struct tomoyo_number_group *group);
+				 const struct tomoyo_group *group);
 /* Check whether the given filename matches the given pattern. */
 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
 				 const struct tomoyo_path_info *pattern);
@@ -858,8 +850,8 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
 							    const u8 profile);
 struct tomoyo_profile *tomoyo_profile(const u8 profile);
 /* Allocate memory for "struct tomoyo_path_group". */
-struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name);
-struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name);
+struct tomoyo_group *tomoyo_get_path_group(const char *group_name);
+struct tomoyo_group *tomoyo_get_number_group(const char *group_name);
 
 /* Check mode for specified functionality. */
 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
@@ -1039,13 +1031,7 @@ static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
 	}
 }
 
-static inline void tomoyo_put_path_group(struct tomoyo_path_group *group)
-{
-	if (group)
-		atomic_dec(&group->users);
-}
-
-static inline void tomoyo_put_number_group(struct tomoyo_number_group *group)
+static inline void tomoyo_put_group(struct tomoyo_group *group)
 {
 	if (group)
 		atomic_dec(&group->users);
diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index de87c45ba9d0..6c2ba69fc89e 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -90,7 +90,7 @@ void tomoyo_put_name_union(struct tomoyo_name_union *ptr)
 	if (!ptr)
 		return;
 	if (ptr->is_group)
-		tomoyo_put_path_group(ptr->group);
+		tomoyo_put_group(ptr->group);
 	else
 		tomoyo_put_name(ptr->filename);
 }
@@ -106,7 +106,7 @@ bool tomoyo_compare_name_union(const struct tomoyo_path_info *name,
 void tomoyo_put_number_union(struct tomoyo_number_union *ptr)
 {
 	if (ptr && ptr->is_group)
-		tomoyo_put_number_group(ptr->group);
+		tomoyo_put_group(ptr->group);
 }
 
 bool tomoyo_compare_number_union(const unsigned long value,
diff --git a/security/tomoyo/gc.c b/security/tomoyo/gc.c
index a54bd823fcd5..446d59f8ae25 100644
--- a/security/tomoyo/gc.c
+++ b/security/tomoyo/gc.c
@@ -12,10 +12,9 @@
 #include <linux/slab.h>
 
 enum tomoyo_policy_id {
+	TOMOYO_ID_GROUP,
 	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_AGGREGATOR,
@@ -207,31 +206,24 @@ static void tomoyo_del_name(struct list_head *element)
 		container_of(element, typeof(*ptr), list);
 }
 
-static void tomoyo_del_path_group_member(struct list_head *element)
+static void tomoyo_del_path_group(struct list_head *element)
 {
-	struct tomoyo_path_group_member *member =
+	struct tomoyo_path_group *member =
 		container_of(element, typeof(*member), head.list);
 	tomoyo_put_name(member->member_name);
 }
 
-static void tomoyo_del_path_group(struct list_head *element)
+static void tomoyo_del_group(struct list_head *element)
 {
-	struct tomoyo_path_group *group =
+	struct tomoyo_group *group =
 		container_of(element, typeof(*group), list);
 	tomoyo_put_name(group->group_name);
 }
 
-static void tomoyo_del_number_group_member(struct list_head *element)
-{
-	struct tomoyo_number_group_member *member =
-		container_of(element, typeof(*member), head.list);
-}
-
 static void tomoyo_del_number_group(struct list_head *element)
 {
-	struct tomoyo_number_group *group =
-		container_of(element, typeof(*group), list);
-	tomoyo_put_name(group->group_name);
+	struct tomoyo_number_group *member =
+		container_of(element, typeof(*member), head.list);
 }
 
 static struct list_head *tomoyo_policy_list[TOMOYO_MAX_POLICY] = {
@@ -305,28 +297,28 @@ static void tomoyo_collect_entry(void)
 		}
 	}
 	{
-		struct tomoyo_path_group *group;
+		struct tomoyo_group *group;
 		list_for_each_entry_rcu(group, &tomoyo_path_group_list, list) {
 			tomoyo_collect_member(&group->member_list,
-					      TOMOYO_ID_PATH_GROUP_MEMBER);
+					      TOMOYO_ID_PATH_GROUP);
 			if (!list_empty(&group->member_list) ||
 			    atomic_read(&group->users))
 				continue;
-			if (!tomoyo_add_to_gc(TOMOYO_ID_PATH_GROUP,
+			if (!tomoyo_add_to_gc(TOMOYO_ID_GROUP,
 					      &group->list))
 				goto unlock;
 		}
 	}
 	{
-		struct tomoyo_number_group *group;
+		struct tomoyo_group *group;
 		list_for_each_entry_rcu(group, &tomoyo_number_group_list,
 					list) {
 			tomoyo_collect_member(&group->member_list,
-					      TOMOYO_ID_NUMBER_GROUP_MEMBER);
+					      TOMOYO_ID_NUMBER_GROUP);
 			if (!list_empty(&group->member_list) ||
 			    atomic_read(&group->users))
 				continue;
-			if (!tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP,
+			if (!tomoyo_add_to_gc(TOMOYO_ID_GROUP,
 					      &group->list))
 				goto unlock;
 		}
@@ -377,14 +369,11 @@ static void tomoyo_kfree_entry(void)
 			if (!tomoyo_del_domain(element))
 				continue;
 			break;
-		case TOMOYO_ID_PATH_GROUP_MEMBER:
-			tomoyo_del_path_group_member(element);
-			break;
 		case TOMOYO_ID_PATH_GROUP:
 			tomoyo_del_path_group(element);
 			break;
-		case TOMOYO_ID_NUMBER_GROUP_MEMBER:
-			tomoyo_del_number_group_member(element);
+		case TOMOYO_ID_GROUP:
+			tomoyo_del_group(element);
 			break;
 		case TOMOYO_ID_NUMBER_GROUP:
 			tomoyo_del_number_group(element);
diff --git a/security/tomoyo/number_group.c b/security/tomoyo/number_group.c
index 8779309c5b44..eca20d6f4e8b 100644
--- a/security/tomoyo/number_group.c
+++ b/security/tomoyo/number_group.c
@@ -11,17 +11,17 @@
 LIST_HEAD(tomoyo_number_group_list);
 
 /**
- * tomoyo_get_number_group - Allocate memory for "struct tomoyo_number_group".
+ * tomoyo_get_group - Allocate memory for "struct tomoyo_number_group".
  *
  * @group_name: The name of number group.
  *
  * Returns pointer to "struct tomoyo_number_group" on success,
  * NULL otherwise.
  */
-struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name)
+struct tomoyo_group *tomoyo_get_number_group(const char *group_name)
 {
-	struct tomoyo_number_group *entry = NULL;
-	struct tomoyo_number_group *group = NULL;
+	struct tomoyo_group *entry = NULL;
+	struct tomoyo_group *group = NULL;
 	const struct tomoyo_path_info *saved_group_name;
 	int error = -ENOMEM;
 	if (!tomoyo_correct_word(group_name))
@@ -59,12 +59,12 @@ struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name)
 static bool tomoyo_same_number_group(const struct tomoyo_acl_head *a,
 				     const struct tomoyo_acl_head *b)
 {
-	return !memcmp(&container_of(a, struct tomoyo_number_group_member,
+	return !memcmp(&container_of(a, struct tomoyo_number_group,
 				     head)->number,
-		       &container_of(b, struct tomoyo_number_group_member,
+		       &container_of(b, struct tomoyo_number_group,
 				     head)->number,
 		       sizeof(container_of(a,
-					   struct tomoyo_number_group_member,
+					   struct tomoyo_number_group,
 					   head)->number));
 }
 
@@ -78,8 +78,8 @@ static bool tomoyo_same_number_group(const struct tomoyo_acl_head *a,
  */
 int tomoyo_write_number_group_policy(char *data, const bool is_delete)
 {
-	struct tomoyo_number_group *group;
-	struct tomoyo_number_group_member e = { };
+	struct tomoyo_group *group;
+	struct tomoyo_number_group e = { };
 	int error;
 	char *w[2];
 	if (!tomoyo_tokenize(data, w, sizeof(w)))
@@ -93,7 +93,7 @@ int tomoyo_write_number_group_policy(char *data, const bool is_delete)
 	error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
 				     &group->member_list,
 				     tomoyo_same_number_group);
-	tomoyo_put_number_group(group);
+	tomoyo_put_group(group);
 	return error;
 }
 
@@ -111,16 +111,16 @@ bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head)
 	struct list_head *gpos;
 	struct list_head *mpos;
 	list_for_each_cookie(gpos, head->read_var1, &tomoyo_number_group_list) {
-		struct tomoyo_number_group *group;
+		struct tomoyo_group *group;
 		const char *name;
-		group = list_entry(gpos, struct tomoyo_number_group, list);
+		group = list_entry(gpos, struct tomoyo_group, list);
 		name = group->group_name->name;
 		list_for_each_cookie(mpos, head->read_var2,
 				     &group->member_list) {
 			int pos;
-			const struct tomoyo_number_group_member *member
+			const struct tomoyo_number_group *member
 				= list_entry(mpos,
-					     struct tomoyo_number_group_member,
+					     struct tomoyo_number_group,
 					     head.list);
 			if (member->head.is_deleted)
 				continue;
@@ -150,9 +150,9 @@ bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head)
  */
 bool tomoyo_number_matches_group(const unsigned long min,
 				 const unsigned long max,
-				 const struct tomoyo_number_group *group)
+				 const struct tomoyo_group *group)
 {
-	struct tomoyo_number_group_member *member;
+	struct tomoyo_number_group *member;
 	bool matched = false;
 	list_for_each_entry_rcu(member, &group->member_list, head.list) {
 		if (member->head.is_deleted)
diff --git a/security/tomoyo/path_group.c b/security/tomoyo/path_group.c
index c78c57cd94ee..bce2524402fa 100644
--- a/security/tomoyo/path_group.c
+++ b/security/tomoyo/path_group.c
@@ -10,16 +10,16 @@
 LIST_HEAD(tomoyo_path_group_list);
 
 /**
- * tomoyo_get_path_group - Allocate memory for "struct tomoyo_path_group".
+ * tomoyo_get_group - Allocate memory for "struct tomoyo_path_group".
  *
  * @group_name: The name of pathname group.
  *
  * Returns pointer to "struct tomoyo_path_group" on success, NULL otherwise.
  */
-struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name)
+struct tomoyo_group *tomoyo_get_path_group(const char *group_name)
 {
-	struct tomoyo_path_group *entry = NULL;
-	struct tomoyo_path_group *group = NULL;
+	struct tomoyo_group *entry = NULL;
+	struct tomoyo_group *group = NULL;
 	const struct tomoyo_path_info *saved_group_name;
 	int error = -ENOMEM;
 	if (!tomoyo_correct_word(group_name))
@@ -57,9 +57,9 @@ struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name)
 static bool tomoyo_same_path_group(const struct tomoyo_acl_head *a,
 				   const struct tomoyo_acl_head *b)
 {
-	return container_of(a, struct tomoyo_path_group_member, head)
+	return container_of(a, struct tomoyo_path_group, head)
 		->member_name ==
-		container_of(b, struct tomoyo_path_group_member, head)
+		container_of(b, struct tomoyo_path_group, head)
 		->member_name;
 }
 
@@ -73,8 +73,8 @@ static bool tomoyo_same_path_group(const struct tomoyo_acl_head *a,
  */
 int tomoyo_write_path_group_policy(char *data, const bool is_delete)
 {
-	struct tomoyo_path_group *group;
-	struct tomoyo_path_group_member e = { };
+	struct tomoyo_group *group;
+	struct tomoyo_path_group e = { };
 	int error = is_delete ? -ENOENT : -ENOMEM;
 	char *w[2];
 	if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0])
@@ -90,7 +90,7 @@ int tomoyo_write_path_group_policy(char *data, const bool is_delete)
 				     tomoyo_same_path_group);
  out:
 	tomoyo_put_name(e.member_name);
-	tomoyo_put_path_group(group);
+	tomoyo_put_group(group);
 	return error;
 }
 
@@ -108,13 +108,13 @@ bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head)
 	struct list_head *gpos;
 	struct list_head *mpos;
 	list_for_each_cookie(gpos, head->read_var1, &tomoyo_path_group_list) {
-		struct tomoyo_path_group *group;
-		group = list_entry(gpos, struct tomoyo_path_group, list);
+		struct tomoyo_group *group;
+		group = list_entry(gpos, struct tomoyo_group, list);
 		list_for_each_cookie(mpos, head->read_var2,
 				     &group->member_list) {
-			struct tomoyo_path_group_member *member;
+			struct tomoyo_path_group *member;
 			member = list_entry(mpos,
-					    struct tomoyo_path_group_member,
+					    struct tomoyo_path_group,
 					    head.list);
 			if (member->head.is_deleted)
 				continue;
@@ -139,9 +139,9 @@ bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head)
  * Caller holds tomoyo_read_lock().
  */
 bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
-			       const struct tomoyo_path_group *group)
+			       const struct tomoyo_group *group)
 {
-	struct tomoyo_path_group_member *member;
+	struct tomoyo_path_group *member;
 	bool matched = false;
 	list_for_each_entry_rcu(member, &group->member_list, head.list) {
 		if (member->head.is_deleted)