efi_selftest: test protocol management

This unit test checks the following protocol services:
InstallProtocolInterface, UninstallProtocolInterface,
InstallMultipleProtocolsInterfaces,
UninstallMultipleProtocolsInterfaces,
HandleProtocol, ProtocolsPerHandle,
LocateHandle, LocateHandleBuffer.

As UninstallProtocolInterface and UninstallMultipleProtocolsInterfaces
are not completely implemented a TODO message will shown for
their failure.

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

include/efi_selftest.h

@@ -28,6 +28,15 @@
 	efi_st_printf(__VA_ARGS__)) \
 
 /*
+ * Prints a TODO message.
+ *
+ * @...	format string followed by fields to print
+ */
+#define efi_st_todo(...) \
+	(efi_st_printf("%s(%u):\nTODO: ", __FILE__, __LINE__), \
+	efi_st_printf(__VA_ARGS__)) \
+
+/*
  * A test may be setup and executed at boottime,
  * it may be setup at boottime and executed at runtime,
  * or it may be setup and executed at runtime.

lib/efi_selftest/Makefile

@@ -15,6 +15,8 @@ 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_manageprotocols.o := $(CFLAGS_EFI)
+CFLAGS_REMOVE_efi_selftest_manageprotocols.o := $(CFLAGS_NON_EFI)
 CFLAGS_efi_selftest_snp.o := $(CFLAGS_EFI)
 CFLAGS_REMOVE_efi_selftest_snp.o := $(CFLAGS_NON_EFI)
 CFLAGS_efi_selftest_textoutput.o := $(CFLAGS_EFI)
@@ -31,6 +33,7 @@ efi_selftest.o \
 efi_selftest_console.o \
 efi_selftest_events.o \
 efi_selftest_exitbootservices.o \
+efi_selftest_manageprotocols.o \
 efi_selftest_snp.o \
 efi_selftest_textoutput.o \
 efi_selftest_tpl.o \

lib/efi_selftest/efi_selftest_manageprotocols.c

@@ -0,0 +1,354 @@
+/*
+ * efi_selftest_manageprotocols
+ *
+ * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ *
+ * This unit test checks the following protocol services:
+ * InstallProtocolInterface, UninstallProtocolInterface,
+ * InstallMultipleProtocolsInterfaces, UninstallMultipleProtocolsInterfaces,
+ * HandleProtocol, ProtocolsPerHandle,
+ * LocateHandle, LocateHandleBuffer.
+ */
+
+#include <efi_selftest.h>
+
+/*
+ * The test currently does not actually call the interface function.
+ * So this is just a dummy structure.
+ */
+struct interface {
+	void (EFIAPI * inc)(void);
+};
+
+static struct efi_boot_services *boottime;
+static efi_guid_t guid1 =
+	EFI_GUID(0x2e7ca819, 0x21d3, 0x0a3a,
+		 0xf7, 0x91, 0x82, 0x1f, 0x7a, 0x83, 0x67, 0xaf);
+static efi_guid_t guid2 =
+	EFI_GUID(0xf909f2bb, 0x90a8, 0x0d77,
+		 0x94, 0x0c, 0x3e, 0xa8, 0xea, 0x38, 0xd6, 0x6f);
+static efi_guid_t guid3 =
+	EFI_GUID(0x06d641a3, 0xf4e7, 0xe0c9,
+		 0xe7, 0x8d, 0x41, 0x2d, 0x72, 0xa6, 0xb1, 0x24);
+static efi_handle_t handle1;
+static efi_handle_t handle2;
+static struct interface interface1;
+static struct interface interface2;
+static struct interface interface3;
+static struct interface interface4;
+
+/*
+ * Find a handle in an array.
+ *
+ * @handle:	handle to find
+ * @count:	number of entries in the array
+ * @buffer:	array to search
+ */
+efi_status_t find_in_buffer(efi_handle_t handle, size_t count,
+			    efi_handle_t *buffer)
+{
+	size_t i;
+
+	for (i = 0; i < count; ++i) {
+		if (buffer[i] == handle)
+			return EFI_SUCCESS;
+	}
+	return EFI_NOT_FOUND;
+}
+
+/*
+ * Setup unit test.
+ *
+ * Create two handles and install two out of three protocol interfaces on each
+ * of them:
+ *
+ * handle1
+ *   guid1 interface1
+ *   guid3 interface3
+ * handle2
+ *   guid1 interface4
+ *   guid2 interface2
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ */
+static int setup(const efi_handle_t img_handle,
+		 const struct efi_system_table *systable)
+{
+	efi_status_t ret;
+	efi_handle_t handle;
+
+	boottime = systable->boottime;
+
+	ret = boottime->install_protocol_interface(&handle1, &guid3,
+						   EFI_NATIVE_INTERFACE,
+						   &interface3);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("InstallProtocolInterface failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (!handle1) {
+		efi_st_error("InstallProtocolInterface failed to create handle\n");
+		return EFI_ST_FAILURE;
+	}
+	handle = handle1;
+	ret = boottime->install_protocol_interface(&handle1, &guid1,
+						   EFI_NATIVE_INTERFACE,
+						   &interface1);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("InstallProtocolInterface failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (handle != handle1) {
+		efi_st_error("InstallProtocolInterface failed to use handle\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = boottime->install_multiple_protocol_interfaces(&handle2,
+			&guid1, &interface4, &guid2, &interface2, NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("InstallMultipleProtocolInterfaces failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (!handle2 || handle1 == handle2) {
+		efi_st_error("InstallMultipleProtocolInterfaces failed to create handle\n");
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Tear down unit test.
+ *
+ */
+static int teardown(void)
+{
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test.
+ *
+ */
+static int execute(void)
+{
+	struct interface *interface;
+	efi_status_t ret;
+	efi_handle_t *buffer;
+	size_t buffer_size;
+	unsigned long int count = 0;
+	efi_guid_t **prot_buffer;
+	unsigned long int prot_count;
+
+	/*
+	 * Test HandleProtocol
+	 */
+	ret = boottime->handle_protocol(handle1, &guid3, (void **)&interface);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("HandleProtocol failed to retrieve interface\n");
+		return EFI_ST_FAILURE;
+	}
+	if (interface != &interface3) {
+		efi_st_error("HandleProtocol returned wrong interface\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = boottime->handle_protocol(handle1, &guid2, (void **)&interface);
+	if (ret == EFI_SUCCESS) {
+		efi_st_error("HandleProtocol returned not installed interface\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/*
+	 * Test LocateHandleBuffer with AllHandles
+	 */
+	ret = boottime->locate_handle_buffer(ALL_HANDLES, NULL, NULL,
+					     &count, &buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer with AllHandles failed\n");
+		return EFI_ST_FAILURE;
+	}
+	buffer_size = count;
+	ret = find_in_buffer(handle1, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = find_in_buffer(handle2, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
+		return EFI_ST_FAILURE;
+	}
+	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
+
+	/*
+	 * Test error handling in UninstallMultipleProtocols
+	 *
+	 * Try to uninstall more protocols than there are installed.
+	 */
+	ret = boottime->uninstall_multiple_protocol_interfaces(
+						handle2,
+						&guid1, &interface4,
+						&guid2, &interface2,
+						&guid3, &interface3,
+						NULL);
+	if (ret == EFI_SUCCESS) {
+		efi_st_todo("UninstallMultipleProtocolInterfaces did not catch error\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/*
+	 * Test LocateHandleBuffer with ByProtocol
+	 */
+	count = buffer_size;
+	ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
+					     &count, &buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed to locate new handles\n");
+		return EFI_ST_FAILURE;
+	}
+	if (count != 2) {
+		efi_st_error("LocateHandleBuffer failed to locate new handles\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = find_in_buffer(handle1, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = find_in_buffer(handle2, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
+		return EFI_ST_FAILURE;
+	}
+	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
+
+	/*
+	 * Test LocateHandle with ByProtocol
+	 */
+	count = buffer_size * sizeof(efi_handle_t);
+	ret = boottime->locate_handle(BY_PROTOCOL, &guid1, NULL,
+				      &count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandle with ByProtocol failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (count / sizeof(efi_handle_t) != 2) {
+		efi_st_error("LocateHandle failed to locate new handles\n");
+		return EFI_ST_FAILURE;
+	}
+	buffer_size = count;
+	ret = find_in_buffer(handle1, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandle failed to locate new handles\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = find_in_buffer(handle2, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandle failed to locate new handles\n");
+		return EFI_ST_FAILURE;
+	}
+	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
+
+	/*
+	 * Test LocateProtocol
+	 */
+	ret = boottime->locate_protocol(&guid1, NULL, (void **)&interface);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateProtocol failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (interface != &interface1 && interface != &interface4) {
+		efi_st_error("LocateProtocol failed to locate protocol\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/*
+	 * Test UninstallMultipleProtocols
+	 */
+	ret = boottime->uninstall_multiple_protocol_interfaces(
+						handle2,
+						&guid1, &interface4,
+						&guid2, &interface2,
+						NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_todo("UninstallMultipleProtocolInterfaces failed\n");
+		/* This test is known to fail due to missing implementation */
+	}
+	/*
+	 * Check that the protocols are really uninstalled.
+	 */
+	count = buffer_size;
+	ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
+					     &count, &buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("LocateHandleBuffer failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (count != 1) {
+		efi_st_todo("UninstallMultipleProtocolInterfaces failed to uninstall protocols\n");
+		/* This test is known to fail due to missing implementation */
+	}
+	ret = find_in_buffer(handle1, count, buffer);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to locate new handle\n");
+		return EFI_ST_FAILURE;
+	}
+	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
+
+	/*
+	 * Test ProtocolsPerHandle
+	 */
+	ret = boottime->protocols_per_handle(handle1,
+					     &prot_buffer, &prot_count);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to get protocols per handle\n");
+		return EFI_ST_FAILURE;
+	}
+	if (prot_count != 2) {
+		efi_st_error("Failed to get protocols per handle\n");
+		return EFI_ST_FAILURE;
+	}
+	if (efi_st_memcmp(prot_buffer[0], &guid1, 16) &&
+	    efi_st_memcmp(prot_buffer[1], &guid1, 16)) {
+		efi_st_error("Failed to get protocols per handle\n");
+		return EFI_ST_FAILURE;
+	}
+	if (efi_st_memcmp(prot_buffer[0], &guid3, 16) &&
+	    efi_st_memcmp(prot_buffer[1], &guid3, 16)) {
+		efi_st_error("Failed to get protocols per handle\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/*
+	 * Uninstall remaining protocols
+	 */
+	ret = boottime->uninstall_protocol_interface(handle1, &guid1,
+						     &interface1);
+	if (ret != EFI_SUCCESS) {
+		efi_st_todo("UninstallProtocolInterface failed\n");
+		/* This test is known to fail due to missing implementation */
+	}
+	ret = boottime->handle_protocol(handle1, &guid1, (void **)&interface);
+	if (ret == EFI_SUCCESS) {
+		efi_st_todo("UninstallProtocolInterface failed\n");
+		/* This test is known to fail due to missing implementation */
+	}
+	ret = boottime->uninstall_protocol_interface(handle1, &guid3,
+						     &interface1);
+	if (ret != EFI_SUCCESS) {
+		efi_st_todo("UninstallProtocolInterface failed\n");
+		/* This test is known to fail due to missing implementation */
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(protserv) = {
+	.name = "manage protocols",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+	.teardown = teardown,
+};