1 files changed, 5 insertions, 13 deletions
diff --git a/components/libc/compilers/dlib/syscall_read.c b/components/libc/compilers/dlib/syscall_read.c
index ae980be6ca..f65b502966 100644
--- a/components/libc/compilers/dlib/syscall_read.c
+++ b/components/libc/compilers/dlib/syscall_read.c
@@ -9,10 +9,8 @@
  */
 
 #include <rtthread.h>
-#ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
 #include <yfuns.h>
+#include <unistd.h>
 #include "libc.h"
 
 #define DBG_TAG    "dlib.syscall_read"
@@ -22,32 +20,26 @@
 #pragma module_name = "?__read"
 size_t __read(int handle, unsigned char *buf, size_t len)
 {
-#ifdef RT_USING_DFS
+#ifdef RT_LIBC_USING_FILEIO
     int size;
-#endif
 
     if (handle == _LLIO_STDIN)
     {
-#ifdef RT_USING_POSIX
         if (libc_stdio_get_console() < 0)
         {
             LOG_W("Do not invoke standard input before initializing libc");
             return 0;
         }
         return read(STDIN_FILENO, buf, len);
-#else
-        return _LLIO_ERROR;
-#endif
     }
     else if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
     {
         return _LLIO_ERROR;
     }
 
-#ifndef RT_USING_DFS
-    return _LLIO_ERROR;
-#else
     size = read(handle, buf, len);
     return size;
-#endif
+#else
+    return _LLIO_ERROR;
+#endif /* RT_LIBC_USING_FILEIO */
 }