Index: /trunk/src/VBox/ValidationKit/common/utils.py
===================================================================
--- /trunk/src/VBox/ValidationKit/common/utils.py	(revision 70574)
+++ /trunk/src/VBox/ValidationKit/common/utils.py	(revision 70575)
@@ -859,5 +859,5 @@
             pass;
     else:
-        if sys.platform in ('linux2', ):
+        if sys.platform in ('linux2', 'linux', 'linux3', 'linux4', 'linux5', 'linux6'):
             asPsCmd = ['/bin/ps',     '-p', '%u' % (uPid,), '-o', 'fname='];
         elif sys.platform in ('sunos5',):
Index: /trunk/src/VBox/ValidationKit/testdriver/base.py
===================================================================
--- /trunk/src/VBox/ValidationKit/testdriver/base.py	(revision 70574)
+++ /trunk/src/VBox/ValidationKit/testdriver/base.py	(revision 70575)
@@ -287,9 +287,10 @@
         fRc = winbase.processCheckPidAndName(uPid, sName);
     else:
-        if sys.platform in ('linux2', ):
+        sOs = utils.getHostOs();
+        if sOs == 'linux':
             asPsCmd = ['/bin/ps',     '-p', '%u' % (uPid,), '-o', 'fname='];
-        elif sys.platform in ('sunos5',):
+        elif sOs == 'solaris':
             asPsCmd = ['/usr/bin/ps', '-p', '%u' % (uPid,), '-o', 'fname='];
-        elif sys.platform in ('darwin',):
+        elif sOs == 'darwin':
             asPsCmd = ['/bin/ps',     '-p', '%u' % (uPid,), '-o', 'ucomm='];
         else:
Index: /trunk/src/VBox/ValidationKit/testdriver/vbox.py
===================================================================
--- /trunk/src/VBox/ValidationKit/testdriver/vbox.py	(revision 70574)
+++ /trunk/src/VBox/ValidationKit/testdriver/vbox.py	(revision 70575)
@@ -1070,4 +1070,6 @@
                 #
                 iPipeR, iPipeW = os.pipe();
+                if hasattr(os, 'set_inheritable'):
+                    os.set_inheritable(iPipeW, fTrue);             # pylint: disable=no-member
                 os.environ['NSPR_INHERIT_FDS'] = 'vboxsvc:startup-pipe:5:0x%x' % (iPipeW,);
                 reporter.log2("NSPR_INHERIT_FDS=%s" % (os.environ['NSPR_INHERIT_FDS']));