[LIBC] fix compiling issue for dlib (IAR).

1 files changed, 60 insertions, 36 deletions

diff --git a/components/libc/dlib/syscall_open.c b/components/libc/dlib/syscall_open.c
index 0aa0caf0cd..95fa43b9c6 100644
--- a/components/libc/dlib/syscall_open.c
+++ b/components/libc/dlib/syscall_open.c
@@ -1,26 +1,26 @@
 /*
- * File      : syscall_open.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Change Logs:
- * Date           Author       Notes
- * 2015-01-28     Bernard      first version
- */
+* File      : syscall_open.c
+* This file is part of RT-Thread RTOS
+* COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
+*
+*  This program is free software; you can redistribute it and/or modify
+*  it under the terms of the GNU General Public License as published by
+*  the Free Software Foundation; either version 2 of the License, or
+*  (at your option) any later version.
+*
+*  This program is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License along
+*  with this program; if not, write to the Free Software Foundation, Inc.,
+*  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Change Logs:
+* Date           Author       Notes
+* 2015-01-28     Bernard      first version
+*/
 
 #include <rtthread.h>
 #include <yfuns.h>
@@ -32,33 +32,57 @@
 
 int __open(const char *filename, int mode)
 {
-    if (mode & _LLIO_CREAT)
+#ifndef RT_USING_DFS
+  return -1;
+#else
+  int handle;
+  int open_mode = O_RDONLY;
+  
+  if (mode & _LLIO_CREAT)
+  {
+    open_mode |= O_CREAT;
+    
+    /* Check what we should do with it if it exists. */
+    if (mode & _LLIO_APPEND)
     {
+      /* Append to the existing file. */
+      open_mode |= O_APPEND;
     }
     
-    if (mode & _LLIO_TEXT)
+    if (mode & _LLIO_TRUNC)
     {
-        /* we didn't support text mode */
+      /* Truncate the existsing file. */
+      open_mode |= O_TRUNC;
     }
-
-    switch (mode & _LLIO_RDWRMASK)
-    {
+  }
+  
+  if (mode & _LLIO_TEXT)
+  {
+    /* we didn't support text mode */
+  }
+  
+  switch (mode & _LLIO_RDWRMASK)
+  {
   case _LLIO_RDONLY:
-    /* The file should be opened for read only. */
     break;
-
+    
   case _LLIO_WRONLY:
-    /* The file should be opened for write only. */
+    open_mode |= O_WRONLY;
     break;
-
+    
   case _LLIO_RDWR:
     /* The file should be opened for both reads and writes. */
+    open_mode |= O_RDWR;
     break;
-
+    
   default:
     return -1;
   }
-
-    return handle;
+  
+  handle = open(filename, open_mode, 0);
+  if (handle < 0)
+    return -1;
+  
+  return handle + _LLIO_STDERR + 1;
+#endif
 }
-