[PATCH 1/1] ntdll: NtQuerySystemInformation(SystemProcessorPerformanceInformation) fix return value

[Dāvis Mosāns]

From: Dāvis Mosāns

Make return value to work like in Windows where
given size must match for STATUS_SUCCESS result.

Co-authored-by: Haltinulo
---
 dlls/ntdll/unix/system.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index 879a5893758..ea296b1097e 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -2805,7 +2805,12 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
         if (size >= len)
         {
             if (!info) ret = STATUS_ACCESS_VIOLATION;
-            else memcpy( info, sppi, len);
+            else
+            {
+                memcpy( info, sppi, len );
+                if (size != len)
+                    ret = STATUS_INFO_LENGTH_MISMATCH;
+            }
         }
         else ret = STATUS_INFO_LENGTH_MISMATCH;