close file descriptor only if >=0

embetrix · Jan 30, 2025 · 3ddc405 · 3ddc405
1 parent 3939425
commit 3ddc405
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/bmap-writer.cpp b/bmap-writer.cpp
@@ -442,7 +442,9 @@ int main(int argc, char *argv[]) {
         std::cerr << "Failed to write image to device: " << device << std::endl;
     }
 
-    close(image_fd);
+    if (image_fd >= 0) {
+        close(image_fd);
+    }
 
     return ret;
 }