files: Export collect_fd()

Declare it extern and allow to use outside files.c.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/files.c

@@ -708,7 +708,7 @@ static struct fdinfo_list_entry *alloc_fle(int pid, FdinfoEntry *fe)
 	return fle;
 }
 
-static int collect_fd(int pid, FdinfoEntry *e, struct rst_info *rst_info)
+int collect_fd(int pid, FdinfoEntry *e, struct rst_info *rst_info)
 {
 	struct fdinfo_list_entry *le, *new_le;
 	struct file_desc *fdesc;

criu/include/files.h

@@ -116,6 +116,7 @@ struct file_desc_ops {
 	char *			(*name)(struct file_desc *, char *b, size_t s);
 };
 
+int collect_fd(int pid, FdinfoEntry *e, struct rst_info *rst_info);
 void collect_task_fd(struct fdinfo_list_entry *new_fle, struct rst_info *ri);
 
 unsigned int find_unused_fd(struct pstree_item *, int hint_fd);