Mainly required to test for any regression in wineserver robustness (wineserver won't segfault on any application action).
Currently disabled on wine, since deleting `\KernelObjects__wine_user_shared_data` will lead to instability (but not wineserver segfault).
-- v2: ntdll/tests: Add tests for deleting pre-existing kernel objects.
From: Jinoh Kang jinoh.kang.kr@gmail.com
--- dlls/ntdll/tests/om.c | 107 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+)
diff --git a/dlls/ntdll/tests/om.c b/dlls/ntdll/tests/om.c index 62659fc8cb4..004b774b40f 100644 --- a/dlls/ntdll/tests/om.c +++ b/dlls/ntdll/tests/om.c @@ -2810,6 +2810,112 @@ static void test_query_directory(void) pNtClose( dir ); }
+static NTSTATUS open_object( HANDLE *handle, ACCESS_MASK access, OBJECT_ATTRIBUTES *attr, const WCHAR *type ) +{ + if (wcscmp( type, L"Event" ) == 0) + return pNtOpenEvent( handle, access, attr ); + if (wcscmp( type, L"KeyedEvent" ) == 0) + return pNtOpenKeyedEvent( handle, access, attr ); + if (wcscmp( type, L"Mutant" ) == 0) + return pNtOpenMutant( handle, access, attr ); + if (wcscmp( type, L"Section" ) == 0) + return pNtOpenSection( handle, access, attr ); + if (wcscmp( type, L"Semaphore" ) == 0) + return pNtOpenSemaphore( handle, access, attr ); + if (wcscmp( type, L"SymbolicLink" ) == 0) + return pNtOpenSymbolicLinkObject( handle, access, attr ); + if (wcscmp( type, L"Timer" ) == 0) + return pNtOpenTimer( handle, access, attr ); + return STATUS_ACCESS_DENIED; +} + +static void test_kernel_objs_delete(void) +{ + union + { + DIRECTORY_BASIC_INFORMATION dbi[2]; + char buffer[0x1000]; + } info; + OBJECT_ATTRIBUTES krnobjs_attr; + ULONG context = 0, size = 0; + BOOLEAN restart_enum = TRUE; + UNICODE_STRING krnobjs_str; + HANDLE krnobjs = NULL; + NTSTATUS status; + + if (winetest_platform_is_wine) + { + skip("wine crashes when \KernelObjects\* are deleted\n"); + return; + } + + RtlInitUnicodeString( &krnobjs_str, L"\KernelObjects" ); + InitializeObjectAttributes( &krnobjs_attr, &krnobjs_str, 0, NULL, NULL ); + status = pNtOpenDirectoryObject( &krnobjs, DIRECTORY_QUERY, &krnobjs_attr ); + ok( !status, "NtOpenDirectoryObject returned %#lx\n", status ); + + for (;;) + { + OBJECT_ATTRIBUTES child_attr; + OBJECT_BASIC_INFORMATION obi, obi2; + ULONG obi_len, obi2_len; + BOOLEAN maybe_deleted = FALSE; + HANDLE child; + + memset( &info, 0xcc, sizeof(info) ); + status = NtQueryDirectoryObject( krnobjs, info.dbi, sizeof(info), TRUE, restart_enum, &context, &size ); + restart_enum = FALSE; + ok( !status || status == STATUS_NO_MORE_ENTRIES, "NtQueryDirectoryObject returned %#lx\n", status ); + if (status) break; + + ok( !!info.dbi[0].ObjectName.Buffer, "expected no less than 1 entry\n" ); + ok( !!info.dbi[0].ObjectTypeName.Buffer, "expected no less than 1 entry\n" ); + ok( !info.dbi[1].ObjectName.Buffer, "expected no more than 1 entry\n" ); + ok( !info.dbi[1].ObjectTypeName.Buffer, "expected no more than 1 entry\n" ); + + if (winetest_debug > 1) trace( "Trying to open %s %s\n", wine_dbgstr_w(info.dbi[0].ObjectTypeName.Buffer), wine_dbgstr_w(info.dbi[0].ObjectName.Buffer) ); + InitializeObjectAttributes( &child_attr, &info.dbi[0].ObjectName, 0, krnobjs, NULL ); + child = NULL; + status = open_object( &child, MAXIMUM_ALLOWED, &child_attr, info.dbi[0].ObjectTypeName.Buffer ); + ok( !status || status == STATUS_ACCESS_DENIED, "open object returned %08lx\n", status ); + if (status) continue; + + status = pNtQueryObject( child, ObjectBasicInformation, &obi, sizeof(obi), &obi_len ); + ok( !status, "NtQueryObject returned %08lx\n", status ); + + trace( "Trying to delete %s with access %08lx\n", wine_dbgstr_w(child_attr.ObjectName->Buffer), obi.GrantedAccess ); + status = NtMakeTemporaryObject( child ); + ok( status == ((obi.GrantedAccess & DELETE) ? 0 : STATUS_ACCESS_DENIED), "NtMakeTemporaryObject() returned %08lx\n", status ); + maybe_deleted = !NT_ERROR( status ); + NtClose( child ); + + if (maybe_deleted) + { + HANDLE child2 = NULL; + + status = open_object( &child2, MAXIMUM_ALLOWED, &child_attr, info.dbi[0].ObjectTypeName.Buffer ); + if (status == STATUS_OBJECT_NAME_NOT_FOUND) + { + /* object deleted; restart enum from the beginning */ + restart_enum = TRUE; + continue; + } + ok( !status, "reopen object returned %08lx\n", status ); + + status = pNtQueryObject( child2, ObjectBasicInformation, &obi2, sizeof(obi2), &obi2_len ); + ok( !status, "NtQueryObject returned %08lx\n", status ); + ok( !(obi2.Attributes & OBJ_PERMANENT), "expected OBJ_PERMANENT unset, got %08lx\n", obi2.Attributes ); + + if (winetest_debug > 1) trace( "HandleCount: %lu -> %lu\n", obi.HandleCount, obi2.HandleCount ); + if (winetest_debug > 1) trace( "PointerCount: %lu -> %lu\n", obi.PointerCount, obi2.PointerCount ); + + NtClose( child2 ); + } + } + + NtClose( krnobjs ); +} + #define test_object_name_with_null(a,b) _test_object_name_with_null(__LINE__,a,b) static void _test_object_name_with_null(unsigned line, HANDLE handle, UNICODE_STRING *expect) { @@ -3219,4 +3325,5 @@ START_TEST(om) test_globalroot(); test_object_identity(); test_query_directory(); + test_kernel_objs_delete(); }
Jinoh Kang (@iamahuman) commented about dlls/ntdll/tests/om.c:
ok( !!info.dbi[0].ObjectTypeName.Buffer, "expected no less than 1 entry\n" );ok( !info.dbi[1].ObjectName.Buffer, "expected no more than 1 entry\n" );ok( !info.dbi[1].ObjectTypeName.Buffer, "expected no more than 1 entry\n" );if (winetest_debug > 1) trace( "Trying to open %s %s\n", wine_dbgstr_w(info.dbi[0].ObjectTypeName.Buffer), wine_dbgstr_w(info.dbi[0].ObjectName.Buffer) );InitializeObjectAttributes( &child_attr, &info.dbi[0].ObjectName, 0, krnobjs, NULL );child = NULL;status = open_object( &child, MAXIMUM_ALLOWED, &child_attr, info.dbi[0].ObjectTypeName.Buffer );ok( !status || status == STATUS_ACCESS_DENIED, "open object returned %08lx\n", status );if (status) continue;status = pNtQueryObject( child, ObjectBasicInformation, &obi, sizeof(obi), &obi_len );ok( !status, "NtQueryObject returned %08lx\n", status );trace( "Trying to delete %s with access %08lx\n", wine_dbgstr_w(child_attr.ObjectName->Buffer), obi.GrantedAccess );status = NtMakeTemporaryObject( child );
This patch doesn't restore the object after deleting it, potentially causing system malfunction or subsequent test failures.
MR !5279 aims to introduce NtMakePermanentObject() for reverting the temporary (pending deletion) state.
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Jinoh Kang -
Jinoh Kang (＠iamahuman)