Paul Gofman : ntdll: Validate flags in NtUnmapViewOfSectionEx().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3e3ca7dd2880749afea498c386ce8b3194a9323d
URL:    https://gitlab.winehq.org/wine/wine/-/commit/3e3ca7dd2880749afea498c386ce8b3...

Author: Paul Gofman 
Date:   Thu May 25 21:11:41 2023 -0600

ntdll: Validate flags in NtUnmapViewOfSectionEx().

---

dlls/kernelbase/tests/process.c | 4 ++--
 dlls/ntdll/unix/virtual.c       | 9 ++++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/dlls/kernelbase/tests/process.c b/dlls/kernelbase/tests/process.c
index 7c6544f6dd9..2e5bb7ca458 100644
--- a/dlls/kernelbase/tests/process.c
+++ b/dlls/kernelbase/tests/process.c
@@ -242,9 +242,9 @@ static void test_VirtualAlloc2(void)
     ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());

ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER);
-    todo_wine ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
     ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_PRESERVE_PLACEHOLDER);
-    todo_wine ok(ret, "Got error %lu.\n", GetLastError());
+    ok(ret, "Got error %lu.\n", GetLastError());

memset(&info, 0, sizeof(info));
     VirtualQuery(placeholder1, &info, sizeof(info));
diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index c701ce4fc03..40fe2c9b282 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -5298,7 +5298,14 @@ NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
  */
 NTSTATUS WINAPI NtUnmapViewOfSectionEx( HANDLE process, PVOID addr, ULONG flags )
 {
-    if (flags) FIXME("Ignoring flags %#x.\n", (int)flags);
+    static const ULONG type_mask = MEM_UNMAP_WITH_TRANSIENT_BOOST | MEM_PRESERVE_PLACEHOLDER;
+
+    if (flags & ~type_mask)
+    {
+        WARN( "Unsupported flags %#x.\n", (int)flags );
+        return STATUS_INVALID_PARAMETER;
+    }
+    if (flags) FIXME( "Ignoring flags %#x.\n", (int)flags );
     return unmap_view_of_section( process, addr );
 }