[tkreuzer] 62353: [NTOSKRNL] Implement SystemPrioritySeperation case in NtSetSystemInformation

Author: tkreuzer
Date: Fri Feb 28 15:29:06 2014
New Revision: 62353

URL: http://svn.reactos.org/svn/reactos?rev=62353&view=rev
Log:
[NTOSKRNL]
Implement SystemPrioritySeperation case in NtSetSystemInformation

Modified:
    branches/kernel-fun/reactos/ntoskrnl/ex/sysinfo.c

Modified: branches/kernel-fun/reactos/ntoskrnl/ex/sysinfo.c
URL:
http://svn.reactos.org/svn/reactos/branches/kernel-fun/reactos/ntoskrnl/ex/…
==============================================================================
--- branches/kernel-fun/reactos/ntoskrnl/ex/sysinfo.c	[iso-8859-1] (original)
+++ branches/kernel-fun/reactos/ntoskrnl/ex/sysinfo.c	[iso-8859-1] Fri Feb 28 15:29:06
2014
@@ -1788,9 +1788,22 @@
 /* Class 39 - Priority Separation */
 SSI_DEF(SystemPrioritySeperation)
 {
-    /* FIXME */
-    DPRINT1("NtSetSystemInformation - SystemPrioritySeperation not
implemented\n");
-    return STATUS_NOT_IMPLEMENTED;
+    /* Check if the size is correct */
+    if (Size != sizeof(ULONG))
+    {
+        return STATUS_INFO_LENGTH_MISMATCH;
+    }
+
+    /* We need the TCB privilege */
+    if (!SeSinglePrivilegeCheck(SeTcbPrivilege, ExGetPreviousMode()))
+    {
+        return STATUS_PRIVILEGE_NOT_HELD;
+    }
+
+    /* Modify the quantum table */
+    PsChangeQuantumTable(TRUE, *(PULONG)Buffer);
+
+    return STATUS_SUCCESS;
 }
 
 /* Class 40 - Plug Play Bus Information */