1 files changed, 21 insertions, 0 deletions
diff --git a/prototypes/connections/test-async-server-gate.c b/prototypes/connections/test-async-server-gate.c
new file mode 100644
index 0000000..1db9816
--- /dev/null
+++ b/prototypes/connections/test-async-server-gate.c
@@ -0,0 +1,21 @@
+#define _POSIX_C_SOURCE 200809L
+#include "store.h"
+#include <stdlib.h>
+#include <unistd.h>
+
+/* Test-only gate at the file sync point. The production server never links
+ * this file or the PURE_STORE_TEST hook. Only the storage worker reaches it. */
+int pure_store_test_fault(PureStoreStage stage) {
+    static int entered;
+    if (stage != PURE_BEFORE_FILE_SYNC || entered) return 0;
+    entered = 1;
+    const char *signal_fd = getenv("PURE_TEST_GATE_SIGNAL_FD");
+    const char *release_fd = getenv("PURE_TEST_GATE_RELEASE_FD");
+    if (!signal_fd || !release_fd) return 0;
+    int signal = atoi(signal_fd), release = atoi(release_fd);
+    const char byte = 1;
+    if (write(signal, &byte, 1) != 1) _exit(91);
+    char released;
+    if (read(release, &released, 1) != 1) _exit(92);
+    return 0;
+}