[jmorlan] 40470: - RtlSetEnvironmentVariable: Removing a variable that didn't exist in the first place should still returns STATUS_SUCCESS. - Removing a variable can be done by using a pointer to a UNICODE_STRING with a NULL Buffer as the value, as well as just passing NULL as the value.

Author: jmorlan
Date: Sun Apr 12 08:41:33 2009
New Revision: 40470

URL: http://svn.reactos.org/svn/reactos?rev=40470&view=rev
Log:
- RtlSetEnvironmentVariable: Removing a variable that didn't exist in the first place
should still returns STATUS_SUCCESS.
- Removing a variable can be done by using a pointer to a UNICODE_STRING with a NULL
Buffer as the value, as well as just passing NULL as the value.

Modified:
    trunk/reactos/dll/win32/kernel32/misc/env.c
    trunk/reactos/lib/rtl/env.c

Modified: trunk/reactos/dll/win32/kernel32/misc/env.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/misc/en…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/misc/env.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/misc/env.c [iso-8859-1] Sun Apr 12 08:41:33 2009
@@ -244,21 +244,12 @@
 	RtlInitUnicodeString (&VarName,
 	                      lpName);
 
-	if (lpValue)
-	{
-		RtlInitUnicodeString (&VarValue,
-		                      lpValue);
-
-		Status = RtlSetEnvironmentVariable (NULL,
-		                                    &VarName,
-		                                    &VarValue);
-	}
-	else
-	{
-		Status = RtlSetEnvironmentVariable (NULL,
-		                                    &VarName,
-		                                    NULL);
-	}
+	RtlInitUnicodeString (&VarValue,
+	                      lpValue);
+
+	Status = RtlSetEnvironmentVariable (NULL,
+	                                    &VarName,
+	                                    &VarValue);
 
 	if (!NT_SUCCESS(Status))
 	{

Modified: trunk/reactos/lib/rtl/env.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/env.c?rev=40470&am…
==============================================================================
--- trunk/reactos/lib/rtl/env.c [iso-8859-1] (original)
+++ trunk/reactos/lib/rtl/env.c [iso-8859-1] Sun Apr 12 08:41:33 2009
@@ -354,7 +354,7 @@
    }
 
 found:
-   if (Value != NULL)
+   if (Value != NULL && Value->Buffer != NULL)
    {
       hole_len = tail - hole;
       /* calculate new environment size */
@@ -472,10 +472,6 @@
          memmove(head,
                  tail,
                  (env_end - tail) * sizeof(WCHAR));
-      }
-      else
-      {
-         Status = STATUS_VARIABLE_NOT_FOUND;
       }
    }