!97 增加内核epoll系统调用适配musl接口并增加测试用例

Merge pull request !97 from wangchen/master

fs/vfs/fs_close.c

@@ -48,6 +48,7 @@
 #endif
 
 #include "mqueue.h"
+#include "epoll.h"
 #include "fs/file.h"
 
 /****************************************************************************
@@ -103,6 +104,11 @@ int close(int fd)
         {
           return mq_close((mqd_t)fd);
         }
+      if ((unsigned int)fd >= EPOLL_FD_OFFSET && \
+          (unsigned int)fd < (unsigned int)(EPOLL_FD_OFFSET + CONFIG_EPOLL_DESCRIPTORS))
+        {
+          return epoll_close(fd);
+        }
 #endif
       else
         {