Gijs Vermeulen : ntdll: Return STATUS_INFO_LENGTH_MISMATCH when len is too small in NtQueryObject(ObjectBasicInformation).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 749f8c25e262cb049289e7c96bb390edcafa1021
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=749f8c25e262cb049289e7c96...

Author: Gijs Vermeulen <gijsvrm(a)gmail.com>
Date:   Fri Apr 16 20:34:39 2021 +0200

ntdll: Return STATUS_INFO_LENGTH_MISMATCH when len is too small in NtQueryObject(ObjectBasicInformation).

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=50791
Signed-off-by: Gijs Vermeulen <gijsvrm(a)gmail.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/ntdll/tests/om.c  | 15 +++++++++++++++
 dlls/ntdll/unix/file.c |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/tests/om.c b/dlls/ntdll/tests/om.c
index e93f11e1126..e0988769c9c 100644
--- a/dlls/ntdll/tests/om.c
+++ b/dlls/ntdll/tests/om.c
@@ -1379,6 +1379,7 @@ static void test_query_object(void)
     char buffer[1024];
     NTSTATUS status;
     ULONG len, expected_len;
+    OBJECT_BASIC_INFORMATION info;
     OBJECT_ATTRIBUTES attr;
     UNICODE_STRING path, target, *str;
     char dir[MAX_PATH], tmp_path[MAX_PATH], file1[MAX_PATH + 16];
@@ -1390,6 +1391,20 @@ static void test_query_object(void)
 
     handle = CreateEventA( NULL, FALSE, FALSE, "test_event" );
 
+    status = pNtQueryObject( handle, ObjectBasicInformation, NULL, 0, NULL );
+    ok( status == STATUS_INFO_LENGTH_MISMATCH, "NtQueryObject failed %x\n", status );
+
+    status = pNtQueryObject( handle, ObjectBasicInformation, &info, 0, NULL );
+    ok( status == STATUS_INFO_LENGTH_MISMATCH, "NtQueryObject failed %x\n", status );
+
+    status = pNtQueryObject( handle, ObjectBasicInformation, NULL, 0, &len );
+    ok( status == STATUS_INFO_LENGTH_MISMATCH, "NtQueryObject failed %x\n", status );
+
+    len = 0;
+    status = pNtQueryObject( handle, ObjectBasicInformation, &info, sizeof(OBJECT_BASIC_INFORMATION), &len );
+    ok( status == STATUS_SUCCESS, "NtQueryObject failed %x\n", status );
+    ok( len >= sizeof(OBJECT_BASIC_INFORMATION), "unexpected len %u\n", len );
+
     len = 0;
     status = pNtQueryObject( handle, ObjectNameInformation, buffer, 0, &len );
     ok( status == STATUS_INFO_LENGTH_MISMATCH, "NtQueryObject failed %x\n", status );
diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index b4d834b7855..488f7485ad8 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -6734,7 +6734,7 @@ NTSTATUS WINAPI NtQueryObject( HANDLE handle, OBJECT_INFORMATION_CLASS info_clas
     {
         OBJECT_BASIC_INFORMATION *p = ptr;
 
-        if (len < sizeof(*p)) return STATUS_INVALID_BUFFER_SIZE;
+        if (len < sizeof(*p)) return STATUS_INFO_LENGTH_MISMATCH;
 
         SERVER_START_REQ( get_object_info )
         {