[PATCH v5 1/1] mountmgr.sys: Do not create empty registry nodes for serial or parallel ports.

[Janne Kekkonen]

From: Janne Kekkonen

fix port_len setting

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58598
---
 dlls/mountmgr.sys/device.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/dlls/mountmgr.sys/device.c b/dlls/mountmgr.sys/device.c
index ba019cdb13d..468ff3bb155 100644
--- a/dlls/mountmgr.sys/device.c
+++ b/dlls/mountmgr.sys/device.c
@@ -1985,6 +1985,8 @@ static void create_port_devices( DRIVER_OBJECT *driver, const char *devices )
     WCHAR port[7];
     DWORD port_len, type, size;
     int i, n;
+    HKEY hKey;
+    BOOL user_defined_ports;

if (driver == serial_driver)
     {
@@ -1999,6 +2001,26 @@ static void create_port_devices( DRIVER_OBJECT *driver, const char *devices )
         port_prefix = L"LPT";
     }

+     /* Check for user defined ports*/
+    user_defined_ports=TRUE;
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"Software\Wine\Ports" , 0, KEY_READ , &hKey)==ERROR_SUCCESS)
+    {
+        i=0;
+        port_len = ARRAY_SIZE(port);
+        user_defined_ports=FALSE;
+        while ((RegEnumValueW(hKey, i, port, &port_len, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)) {
+            if (wcsnicmp( port, port_prefix, 3)==0){
+                user_defined_ports=TRUE;
+                break;
+            }
+            i++;
+            port_len = ARRAY_SIZE(port);
+         }
+	    RegCloseKey(hKey);
+    }
+    /*If no user defined ports and no devices do not create registry entry*/
+    if(!user_defined_ports && strlen(devices)==0) return;
+
     /* @@ Wine registry key: HKLM\Software\Wine\Ports */

RegCreateKeyExW( HKEY_LOCAL_MACHINE, L"Software\Wine\Ports", 0, NULL, 0,