efi_selftest: unit test for variable services

Provide a unit test for variable services.

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

2 files changed, 181 insertions, 0 deletions

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 80c4302645..2b943bc4d8 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -28,6 +28,7 @@ efi_selftest_textinput.o \
 efi_selftest_textoutput.o \
 efi_selftest_tpl.o \
 efi_selftest_util.o \
+efi_selftest_variables.o \
 efi_selftest_watchdog.o
 
 ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy)
diff --git a/lib/efi_selftest/efi_selftest_variables.c b/lib/efi_selftest/efi_selftest_variables.c
new file mode 100644
index 0000000000..f5e8eb6231
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_variables.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_variables
+ *
+ * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * This unit test checks the following protocol services:
+ * ConnectController, DisconnectController,
+ * InstallProtocol, ReinstallProtocol, UninstallProtocol,
+ * OpenProtocol, CloseProtcol, OpenProtocolInformation
+ */
+
+#include <efi_selftest.h>
+
+#define EFI_ST_MAX_DATA_SIZE 16
+#define EFI_ST_MAX_VARNAME_SIZE 40
+
+static struct efi_boot_services *boottime;
+static struct efi_runtime_services *runtime;
+static efi_guid_t guid_vendor0 =
+	EFI_GUID(0x67029eb5, 0x0af2, 0xf6b1,
+		 0xda, 0x53, 0xfc, 0xb5, 0x66, 0xdd, 0x1c, 0xe6);
+static efi_guid_t guid_vendor1 =
+	EFI_GUID(0xff629290, 0x1fc1, 0xd73f,
+		 0x8f, 0xb1, 0x32, 0xf9, 0x0c, 0xa0, 0x42, 0xea);
+
+/*
+ * Setup unit test.
+ *
+ * @handle	handle of the loaded image
+ * @systable	system table
+ */
+static int setup(const efi_handle_t img_handle,
+		 const struct efi_system_table *systable)
+{
+	boottime = systable->boottime;
+	runtime = systable->runtime;
+
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test.
+ */
+static int execute(void)
+{
+	efi_status_t ret;
+	efi_uintn_t len;
+	u32 attr;
+	u8 v[16] = {0x5d, 0xd1, 0x5e, 0x51, 0x5a, 0x05, 0xc7, 0x0c,
+		    0x35, 0x4a, 0xae, 0x87, 0xa5, 0xdf, 0x0f, 0x65,};
+	u8 *data[EFI_ST_MAX_DATA_SIZE];
+	u16 varname[EFI_ST_MAX_VARNAME_SIZE];
+	int flag;
+	efi_guid_t guid;
+	u64 max_storage, rem_storage, max_size;
+
+	ret = runtime->query_variable_info(EFI_VARIABLE_BOOTSERVICE_ACCESS,
+					   &max_storage, &rem_storage,
+					   &max_size);
+	if (ret != EFI_SUCCESS) {
+		efi_st_todo("QueryVariableInfo failed\n");
+	} else if (!max_storage || !rem_storage || !max_size) {
+		efi_st_error("QueryVariableInfo: wrong info\n");
+		return EFI_ST_FAILURE;
+	}
+	/* Set variable 0 */
+	ret = runtime->set_variable(L"efi_st_var0", &guid_vendor0,
+				    EFI_VARIABLE_BOOTSERVICE_ACCESS,
+				    3, v + 4);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("SetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	/* Set variable 1 */
+	ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
+				    EFI_VARIABLE_BOOTSERVICE_ACCESS,
+				    8, v);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("SetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	len = EFI_ST_MAX_DATA_SIZE;
+	ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
+				    &attr, &len, data);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("GetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (len != 8) {
+		efi_st_error("GetVariable returned wrong length %u\n",
+			     (unsigned int)len);
+		return EFI_ST_FAILURE;
+	}
+	if (efi_st_memcmp(data, v, 8)) {
+		efi_st_error("GetVariable returned wrong value\n");
+		return EFI_ST_FAILURE;
+	}
+	/* Append variable 1 */
+	ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
+				    EFI_VARIABLE_BOOTSERVICE_ACCESS |
+				    EFI_VARIABLE_APPEND_WRITE,
+				    7, v + 8);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("SetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	len = EFI_ST_MAX_DATA_SIZE;
+	ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
+				    &attr, &len, data);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("GetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (len != 15)
+		efi_st_todo("GetVariable returned wrong length %u\n",
+			    (unsigned int)len);
+	if (efi_st_memcmp(data, v, len))
+		efi_st_todo("GetVariable returned wrong value\n");
+	/* Enumerate variables */
+	boottime->set_mem(&guid, 16, 0);
+	*varname = 0;
+	flag = 0;
+	for (;;) {
+		len = EFI_ST_MAX_VARNAME_SIZE;
+		ret = runtime->get_next_variable_name(&len, varname, &guid);
+		if (ret == EFI_NOT_FOUND)
+			break;
+		if (ret != EFI_SUCCESS) {
+			efi_st_todo("GetNextVariableName failed\n");
+			break;
+		}
+		if (!efi_st_memcmp(&guid, &guid_vendor0, sizeof(efi_guid_t)) &&
+		    !efi_st_strcmp_16_8(varname, "efi_st_var0"))
+			flag |= 2;
+		if (!efi_st_memcmp(&guid, &guid_vendor1, sizeof(efi_guid_t)) &&
+		    !efi_st_strcmp_16_8(varname, "efi_st_var1"))
+			flag |= 2;
+	}
+	if (flag != 3)
+		efi_st_todo(
+			"GetNextVariableName did not return all variables\n");
+	/* Delete variable 1 */
+	ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
+				    0, 0, NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("SetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	len = EFI_ST_MAX_DATA_SIZE;
+	ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
+				    &attr, &len, data);
+	if (ret != EFI_NOT_FOUND) {
+		efi_st_error("Variable was not deleted\n");
+		return EFI_ST_FAILURE;
+	}
+	/* Delete variable 0 */
+	ret = runtime->set_variable(L"efi_st_var0", &guid_vendor0,
+				    0, 0, NULL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("SetVariable failed\n");
+		return EFI_ST_FAILURE;
+	}
+	len = EFI_ST_MAX_DATA_SIZE;
+	ret = runtime->get_variable(L"efi_st_var0", &guid_vendor0,
+				    &attr, &len, data);
+	if (ret != EFI_NOT_FOUND) {
+		efi_st_error("Variable was not deleted\n");
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(variables) = {
+	.name = "variables",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+};