files: Declare structures of fake masters

Fake masters are files, which are not owned by
a process, that is able to open them.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/files.c

@@ -54,6 +54,8 @@
 
 #define FDESC_HASH_SIZE	64
 static struct hlist_head file_desc_hash[FDESC_HASH_SIZE];
+/* file_desc's, which fle is not owned by a process, that is able to open them */
+static LIST_HEAD(fake_master_head);
 
 static void init_fdesc_hash(void)
 {
@@ -66,6 +68,7 @@ static void init_fdesc_hash(void)
 void file_desc_init(struct file_desc *d, u32 id, struct file_desc_ops *ops)
 {
 	INIT_LIST_HEAD(&d->fd_info_head);
+	INIT_LIST_HEAD(&d->fake_master_list);
 	INIT_HLIST_NODE(&d->hash);
 
 	d->id	= id;

criu/include/files.h

@@ -133,6 +133,8 @@ struct file_desc {
 	struct hlist_node	hash;		/* Descriptor hashing and lookup */
 	struct list_head	fd_info_head;	/* Chain of fdinfo_list_entry-s with same ID and type but different pids */
 	struct file_desc_ops	*ops;		/* Associated operations */
+	struct list_head	fake_master_list;/* To chain in the list of file_desc, which don't
+						    have a fle in a task, that having permissions */
 };
 
 struct fdtype_ops {