efi_selftest: check notification of ExitBootServices

Check that the notification function of an
EVT_SIGNAL_EXIT_BOOT_SERVICES event is called
exactly once.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index ddf304e1fa47a4ecae47f5fa2666d4ce7473bf62..30f196093307df0f5b59b93a676d6510e681f1d0 100644 (file)
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -13,6 +13,8 @@ CFLAGS_efi_selftest_console.o := $(CFLAGS_EFI)
 CFLAGS_REMOVE_efi_selftest_console.o := $(CFLAGS_NON_EFI)
 CFLAGS_efi_selftest_events.o := $(CFLAGS_EFI)
 CFLAGS_REMOVE_efi_selftest_events.o := $(CFLAGS_NON_EFI)
+CFLAGS_efi_selftest_exitbootservices.o := $(CFLAGS_EFI)
+CFLAGS_REMOVE_efi_selftest_exitbootservices.o := $(CFLAGS_NON_EFI)
 CFLAGS_efi_selftest_tpl.o := $(CFLAGS_EFI)
 CFLAGS_REMOVE_efi_selftest_tpl.o := $(CFLAGS_NON_EFI)
 
@@ -20,4 +22,5 @@ obj-$(CONFIG_CMD_BOOTEFI_SELFTEST) += \
 efi_selftest.o \
 efi_selftest_console.o \
 efi_selftest_events.o \
+efi_selftest_exitbootservices.o \
 efi_selftest_tpl.o

diff --git a/lib/efi_selftest/efi_selftest_exitbootservices.c b/lib/efi_selftest/efi_selftest_exitbootservices.c
new file mode 100644 (file)
index 0000000..60271e6
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_exitbootservices.c
@@ -0,0 +1,106 @@
+/*
+ * efi_selftest_events
+ *
+ * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ *
+ * 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 struct efi_boot_services *boottime;
+static struct efi_event *event_notify;
+static unsigned int counter;
+
+/*
+ * Notification function, increments a counter.
+ *
+ * @event      notified event
+ * @context    pointer to the counter
+ */
+static void EFIAPI notify(struct efi_event *event, void *context)
+{
+       if (!context)
+               return;
+       ++*(unsigned int *)context;
+}
+
+/*
+ * Setup unit test.
+ *
+ * Create an EVT_SIGNAL_EXIT_BOOT_SERVICES event.
+ *
+ * @handle:    handle of the loaded image
+ * @systable:  system table
+ */
+static int setup(const efi_handle_t handle,
+                const struct efi_system_table *systable)
+{
+       efi_status_t ret;
+
+       boottime = systable->boottime;
+
+       counter = 0;
+       ret = boottime->create_event(EVT_SIGNAL_EXIT_BOOT_SERVICES,
+                                    TPL_CALLBACK, notify, (void *)&counter,
+                                    &event_notify);
+       if (ret != EFI_SUCCESS) {
+               efi_st_error("could not create event\n");
+               return 1;
+       }
+       return 0;
+}
+
+/*
+ * Tear down unit test.
+ *
+ * Close the event created in setup.
+ */
+static int teardown(void)
+{
+       efi_status_t ret;
+
+       if (event_notify) {
+               ret = boottime->close_event(event_notify);
+               event_notify = NULL;
+               if (ret != EFI_SUCCESS) {
+                       efi_st_error("could not close event\n");
+                       return 1;
+               }
+       }
+       return 0;
+}
+
+/*
+ * 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.
+ */
+static int execute(void)
+{
+       if (counter != 1) {
+               efi_st_error("ExitBootServices was not notified");
+               return 1;
+       }
+       efi_st_exit_boot_services();
+       if (counter != 1) {
+               efi_st_error("ExitBootServices was notified twice");
+               return 1;
+       }
+       return 0;
+}
+
+EFI_UNIT_TEST(exitbootservices) = {
+       .name = "ExitBootServices",
+       .phase = EFI_SETUP_BEFORE_BOOTTIME_EXIT,
+       .setup = setup,
+       .execute = execute,
+       .teardown = teardown,
+};