From 2e74dd3e76d5b8714031c92485e73ddaf7e8ea7c Mon Sep 17 00:00:00 2001
From: Dmitry Gorbachev <gorbachev@reactos.org>
Date: Thu, 6 Aug 2009 22:53:04 +0000
Subject: [PATCH] Add GetLogicalProcessorInformation() and a stub for
 ReOpenFile() by Alwyn Tan's request.

svn path=/trunk/; revision=42440
---
 reactos/dll/win32/kernel32/kernel32.pspec |  2 ++
 reactos/dll/win32/kernel32/misc/stubs.c   |  9 ------
 reactos/dll/win32/kernel32/misc/sysinfo.c | 36 +++++++++++++++++++++++
 3 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/reactos/dll/win32/kernel32/kernel32.pspec b/reactos/dll/win32/kernel32/kernel32.pspec
index 631a70a4a0c..353da456ec2 100644
--- a/reactos/dll/win32/kernel32/kernel32.pspec
+++ b/reactos/dll/win32/kernel32/kernel32.pspec
@@ -400,6 +400,7 @@
 @ stdcall GetLogicalDriveStringsA(long ptr)
 @ stdcall GetLogicalDriveStringsW(long ptr)
 @ stdcall GetLogicalDrives()
+@ stdcall GetLogicalProcessorInformation(ptr ptr)
 @ stdcall GetLongPathNameA (str long long)
 @ stdcall GetLongPathNameW (wstr long long)
 @ stdcall GetMailslotInfo(long ptr ptr ptr ptr)
@@ -710,6 +711,7 @@
 @ stdcall QueueUserAPC(ptr long long)
 @ stdcall QueueUserWorkItem(ptr ptr long)
 @ stdcall RaiseException(long long long ptr)
+@ stub ReOpenFile ;@ stdcall ReOpenFile(ptr long long long)
 @ stdcall ReadConsoleA(long ptr long ptr ptr)
 @ stdcall ReadConsoleInputA(long ptr long ptr)
 @ stdcall ReadConsoleInputExA(long ptr long ptr long)
diff --git a/reactos/dll/win32/kernel32/misc/stubs.c b/reactos/dll/win32/kernel32/misc/stubs.c
index 4c73e9a9505..5ecdad28638 100644
--- a/reactos/dll/win32/kernel32/misc/stubs.c
+++ b/reactos/dll/win32/kernel32/misc/stubs.c
@@ -992,15 +992,6 @@ GetProcessWorkingSetSizeEx(IN HANDLE hProcess,
     return FALSE;
 }
 
-BOOL
-WINAPI
-GetLogicalProcessorInformation(OUT PSYSTEM_LOGICAL_PROCESSOR_INFORMATION Buffer,
-                               IN OUT PDWORD ReturnLength)
-{
-    STUB;
-    return FALSE;
-}
-
 BOOL
 WINAPI
 GetNumaAvailableMemoryNode(IN UCHAR Node,
diff --git a/reactos/dll/win32/kernel32/misc/sysinfo.c b/reactos/dll/win32/kernel32/misc/sysinfo.c
index c33402e5f2b..612b7eddc15 100644
--- a/reactos/dll/win32/kernel32/misc/sysinfo.c
+++ b/reactos/dll/win32/kernel32/misc/sysinfo.c
@@ -232,3 +232,39 @@ GetNativeSystemInfo(
     // GetNativeSystemInfo should return PROCESSOR_ARCHITECTURE_AMD64
     GetSystemInfo(lpSystemInfo);
 }
+
+/*
+ * @implemented
+ */
+BOOL
+WINAPI
+GetLogicalProcessorInformation(OUT PSYSTEM_LOGICAL_PROCESSOR_INFORMATION Buffer,
+                               IN OUT PDWORD ReturnLength)
+{
+    NTSTATUS Status;
+
+    if (!ReturnLength)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+
+    Status = NtQuerySystemInformation(SystemLogicalProcessorInformation,
+                                      Buffer,
+                                      *ReturnLength,
+                                      ReturnLength);
+
+    if (!NT_SUCCESS(Status))
+    {
+        /*
+         * When NtQuerySystemInformation says STATUS_INFO_LENGTH_MISMATCH,
+         * return ERROR_INSUFFICIENT_BUFFER instead of ERROR_BAD_LENGTH.
+         */
+        SetLastErrorByStatus(Status == STATUS_INFO_LENGTH_MISMATCH
+                             ? STATUS_BUFFER_TOO_SMALL
+                             : Status);
+        return FALSE;
+    }
+
+    return TRUE;
+}