add a new interal function call GetRootPath(TCHAR *InPath,TCHAR *OutPath,INT size) it get the a driver current path without change the current driver directory, it is not in use yet, prep for copy, cd, rm, and all other commands.

svn path=/trunk/; revision=16636

reactos/subsys/system/cmd/cmd.h

@@ -291,6 +291,7 @@ INT CommandMemory (LPTSTR, LPTSTR);
 
 
 /* Prototypes for MISC.C */
+INT GetRootPath(TCHAR *InPath,TCHAR *OutPath,INT size);
 TCHAR  cgetchar (VOID);
 BOOL   CheckCtrlBreak (INT);
 LPTSTR *split (LPTSTR, LPINT, BOOL);

reactos/subsys/system/cmd/internal.c

@@ -148,6 +148,46 @@ VOID FreeLastPath (VOID)
 		free (lpLastPath);
 }
 
+/* help functions for getting current path from driver 
+   without changing driver. Return code 0 = ok, 1 = fail.
+   INT GetRootPath("C:",outbuffer,chater size of outbuffer);
+   the frist param can have any size, if the the two frist
+   letter are not a drive with : it will get Currentpath on
+   current drive exacly as GetCurrentDirectory does.
+   */
+
+INT GetRootPath(TCHAR *InPath,TCHAR *OutPath,INT size)
+{
+  INT retcode = 1;
+  INT t;
+
+  for (t=0;t<32;t++) 
+  {    
+    if (_tgetdcwd(t,OutPath,size) != NULL) 
+    {
+      if (_tcsncicmp(InPath,OutPath,2))
+      {
+       retcode = 0;      
+       return retcode;
+      }
+    }    
+  }
+   
+  /* fail to getting path devic did not exists */
+  if (_tcslen(InPath)>1)
+  {
+    if (InPath[1]==_T(':'))
+       return 1;  
+  }
+
+  retcode = GetCurrentDirectory(size,OutPath);     
+  if (retcode==0) 
+      return 1;
+
+  return 0;
+}
+  
+
 /*
  * CD / CHDIR
  *

reactos/subsys/system/cmd/precomp.h

@@ -4,6 +4,8 @@
 #include <shellapi.h>
 
 #include <tchar.h>
+#include <direct.h>
+
 #include <ctype.h>
 #include <string.h>
 #include <stdio.h>
@@ -15,3 +17,4 @@
 #include "cmd.h"
 #include "config.h"
 #include "batch.h"
+