1 files changed, 133 insertions, 0 deletions
diff --git a/lib/efi_selftest/efi_selftest_exitbootservices.c b/lib/efi_selftest/efi_selftest_exitbootservices.c
new file mode 100644
index 00000000000..b090ce74d23
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_exitbootservices.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_exitbootservices
+ *
+ * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * This unit test checks that the notification function of an
+ * EVT_SIGNAL_EXIT_BOOT_SERVICES event is called exactly once.
+ */
+
+#include <efi_selftest.h>
+
+static efi_guid_t guid_before_exit_boot_services =
+	EFI_GUID(0x8be0e274, 0x3970, 0x4b44, 0x80, 0xc5,
+		 0x1a, 0xb9, 0x50, 0x2f, 0x3b, 0xfc);
+#define CAPACITY 4
+
+struct notification_record {
+	unsigned int count;
+	unsigned int type[CAPACITY];
+};
+
+struct notification_context {
+	struct notification_record *record;
+	unsigned int type;
+};
+
+static struct efi_boot_services *boottime;
+static struct efi_event *efi_st_event_notify;
+static struct notification_record record;
+
+struct notification_context context_before = {
+	.record = &record,
+	.type = 1,
+};
+
+struct notification_context context = {
+	.record = &record,
+	.type = 2,
+};
+
+/*
+ * Notification function, increments the notification count.
+ *
+ * @event	notified event
+ * @context	pointer to the notification count
+ */
+static void EFIAPI ebs_notify(struct efi_event *event, void *context)
+{
+	struct notification_context *ctx = context;
+
+	if (ctx->record->count >= CAPACITY)
+		return;
+
+	ctx->record->type[ctx->record->count] = ctx->type;
+	ctx->record->count++;
+}
+
+/*
+ * Setup unit test.
+ *
+ * Create an EVT_SIGNAL_EXIT_BOOT_SERVICES event.
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ * Return:	EFI_ST_SUCCESS for success
+ */
+static int setup(const efi_handle_t handle,
+		 const struct efi_system_table *systable)
+{
+	efi_status_t ret;
+
+	boottime = systable->boottime;
+
+	ret = boottime->create_event(EVT_SIGNAL_EXIT_BOOT_SERVICES,
+				     TPL_CALLBACK, ebs_notify,
+				     &context,
+				     &efi_st_event_notify);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("could not create event\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = boottime->create_event_ex(0, TPL_CALLBACK, ebs_notify,
+					&context_before,
+					&guid_before_exit_boot_services,
+					&efi_st_event_notify);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("could not create event\n");
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test.
+ *
+ * Check that the notification function of the EVT_SIGNAL_EXIT_BOOT_SERVICES
+ * event has been called.
+ *
+ * Call ExitBootServices again and check that the notification function is
+ * not called again.
+ *
+ * Return:	EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+	if (record.count != 2) {
+		efi_st_error("Incorrect event count %u\n", record.count);
+		return EFI_ST_FAILURE;
+	}
+	if (record.type[0] != 1) {
+		efi_st_error("EFI_GROUP_BEFORE_EXIT_BOOT_SERVICE not notified\n");
+		return EFI_ST_FAILURE;
+	}
+	if (record.type[1] != 2) {
+		efi_st_error("EVT_SIGNAL_EXIT_BOOT_SERVICES was not notified\n");
+		return EFI_ST_FAILURE;
+	}
+	efi_st_exit_boot_services();
+	if (record.count != 2) {
+		efi_st_error("Incorrect event count %u\n", record.count);
+		return EFI_ST_FAILURE;
+	}
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(exitbootservices) = {
+	.name = "ExitBootServices",
+	.phase = EFI_SETUP_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+};