ntdll, server: Implement NtCreateMutant().

dlls/ntdll/unix/esync.c

@@ -84,6 +84,13 @@ struct semaphore
 };
 C_ASSERT(sizeof(struct semaphore) == 8);
 
+struct mutex
+{
+    DWORD tid;
+    int count;    /* recursion count */
+};
+C_ASSERT(sizeof(struct mutex) == 8);
+
 struct event
 {
     int signaled;
@@ -408,6 +415,15 @@ NTSTATUS esync_reset_event( HANDLE handle )
     return STATUS_SUCCESS;
 }
 
+NTSTATUS esync_create_mutex( HANDLE *handle, ACCESS_MASK access,
+    const OBJECT_ATTRIBUTES *attr, BOOLEAN initial )
+{
+    TRACE("name %s, initial %d.\n",
+        attr ? debugstr_us(attr->ObjectName) : "<no name>", initial);
+
+    return create_esync( ESYNC_MUTEX, handle, access, attr, initial ? 0 : 1, 0 );
+}
+
 #define TICKSPERSEC        10000000
 #define TICKSPERMSEC       10000
 

dlls/ntdll/unix/esync.h

@@ -31,6 +31,9 @@ extern NTSTATUS esync_create_event( HANDLE *handle, ACCESS_MASK access,
 extern NTSTATUS esync_reset_event( HANDLE handle ) DECLSPEC_HIDDEN;
 extern NTSTATUS esync_set_event( HANDLE handle ) DECLSPEC_HIDDEN;
 
+extern NTSTATUS esync_create_mutex( HANDLE *handle, ACCESS_MASK access,
+    const OBJECT_ATTRIBUTES *attr, BOOLEAN initial ) DECLSPEC_HIDDEN;
+
 extern NTSTATUS esync_wait_objects( DWORD count, const HANDLE *handles, BOOLEAN wait_any,
                                     BOOLEAN alertable, const LARGE_INTEGER *timeout ) DECLSPEC_HIDDEN;
 

dlls/ntdll/unix/sync.c

@@ -556,6 +556,10 @@ NTSTATUS WINAPI NtCreateMutant( HANDLE *handle, ACCESS_MASK access, const OBJECT
     struct object_attributes *objattr;
 
     *handle = 0;
+
+    if (do_esync())
+        return esync_create_mutex( handle, access, attr, owned );
+
     if ((ret = alloc_object_attributes( attr, &objattr, &len ))) return ret;
 
     SERVER_START_REQ( create_mutex )

server/esync.c

@@ -202,6 +202,13 @@ struct semaphore
 };
 C_ASSERT(sizeof(struct semaphore) == 8);
 
+struct mutex
+{
+    DWORD tid;
+    int count;    /* recursion count */
+};
+C_ASSERT(sizeof(struct mutex) == 8);
+
 struct event
 {
     int signaled;
@@ -272,6 +279,13 @@ struct esync *create_esync( struct object *root, const struct unicode_str *name,
                 event->locked = 0;
                 break;
             }
+            case ESYNC_MUTEX:
+            {
+                struct mutex *mutex = get_shm( esync->shm_idx );
+                mutex->tid = initval ? 0 : current->id;
+                mutex->count = initval ? 0 : 1;
+                break;
+            }
             default:
                 assert( 0 );
             }