1 files changed, 15 insertions, 9 deletions
diff --git a/bufferinfo/BufferInfoGetter.cpp b/bufferinfo/BufferInfoGetter.cpp
index 0cfd7e5..95c1a23 100644
--- a/bufferinfo/BufferInfoGetter.cpp
+++ b/bufferinfo/BufferInfoGetter.cpp
@@ -22,9 +22,14 @@
 #include "BufferInfoMapperMetadata.h"
 #endif
 
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
 #include <xf86drm.h>
 #include <xf86drmMode.h>
 
+#include <mutex>
+
 #include "utils/log.h"
 #include "utils/properties.h"
 
@@ -48,17 +53,18 @@ BufferInfoGetter *BufferInfoGetter::GetInstance() {
   return inst.get();
 }
 
-bool BufferInfoGetter::IsHandleUsable(buffer_handle_t handle) {
-  hwc_drm_bo_t bo;
-  memset(&bo, 0, sizeof(hwc_drm_bo_t));
-
-  if (ConvertBoInfo(handle, &bo) != 0) {
-    return false;
+std::optional<BufferUniqueId> BufferInfoGetter::GetUniqueId(
+    buffer_handle_t handle) {
+  struct stat sb {};
+  if (fstat(handle->data[0], &sb) != 0) {
+    return {};
   }
-  if (bo.prime_fds[0] == 0) {
-    return false;
+
+  if (sb.st_size == 0) {
+    return {};
   }
-  return true;
+
+  return static_cast<BufferUniqueId>(sb.st_ino);
 }
 
 int LegacyBufferInfoGetter::Init() {