update_engine: New BootControlInterface class.
The new BootControlInterface class is a platform-independent
abstraction to control the bootloader. It provides methods for setting
what partition slots are available for booting and getting the
bootloader status about the available slots.
The Chrome OS specific implementation of the bootloader was moved to
the BootControlChromeOS which now depends on the vboot_host
implementation used in Chrome OS. Follow up CL will implement the
equivalent class for Brillo.
BUG=b:23010637
TEST=unittests; cros flash from the new image and rolled back from it.
Change-Id: I0a03aeeb8c21d8c99e1866b625e6e8c96628215b
diff --git a/boot_control_chromeos_unittest.cc b/boot_control_chromeos_unittest.cc
new file mode 100644
index 0000000..6a60009
--- /dev/null
+++ b/boot_control_chromeos_unittest.cc
@@ -0,0 +1,70 @@
+//
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "update_engine/boot_control_chromeos.h"
+
+#include <gtest/gtest.h>
+
+namespace chromeos_update_engine {
+
+class BootControlChromeOSTest : public ::testing::Test {
+ protected:
+ void SetUp() override {
+ // We don't run Init() for bootctl_, we set its internal values instead.
+ bootctl_.num_slots_ = 2;
+ bootctl_.current_slot_ = 0;
+ bootctl_.boot_disk_name_ = "/dev/null";
+ }
+
+ BootControlChromeOS bootctl_; // BootControlChromeOS under test.
+};
+
+TEST_F(BootControlChromeOSTest, SysfsBlockDeviceTest) {
+ EXPECT_EQ("/sys/block/sda", bootctl_.SysfsBlockDevice("/dev/sda"));
+ EXPECT_EQ("", bootctl_.SysfsBlockDevice("/foo/sda"));
+ EXPECT_EQ("", bootctl_.SysfsBlockDevice("/dev/foo/bar"));
+ EXPECT_EQ("", bootctl_.SysfsBlockDevice("/"));
+ EXPECT_EQ("", bootctl_.SysfsBlockDevice("./"));
+ EXPECT_EQ("", bootctl_.SysfsBlockDevice(""));
+}
+
+TEST_F(BootControlChromeOSTest, GetPartitionNumberTest) {
+ // The partition name should not be case-sensitive.
+ EXPECT_EQ(2, bootctl_.GetPartitionNumber("kernel", 0));
+ EXPECT_EQ(2, bootctl_.GetPartitionNumber("boot", 0));
+ EXPECT_EQ(2, bootctl_.GetPartitionNumber("KERNEL", 0));
+ EXPECT_EQ(2, bootctl_.GetPartitionNumber("BOOT", 0));
+
+ EXPECT_EQ(3, bootctl_.GetPartitionNumber("ROOT", 0));
+ EXPECT_EQ(3, bootctl_.GetPartitionNumber("system", 0));
+
+ EXPECT_EQ(3, bootctl_.GetPartitionNumber("ROOT", 0));
+ EXPECT_EQ(3, bootctl_.GetPartitionNumber("system", 0));
+
+ // Slot B.
+ EXPECT_EQ(4, bootctl_.GetPartitionNumber("KERNEL", 1));
+ EXPECT_EQ(5, bootctl_.GetPartitionNumber("ROOT", 1));
+
+ // Slot C doesn't exists.
+ EXPECT_EQ(-1, bootctl_.GetPartitionNumber("KERNEL", 2));
+ EXPECT_EQ(-1, bootctl_.GetPartitionNumber("ROOT", 2));
+
+ // Non A/B partitions are ignored.
+ EXPECT_EQ(-1, bootctl_.GetPartitionNumber("OEM", 0));
+ EXPECT_EQ(-1, bootctl_.GetPartitionNumber("A little panda", 0));
+}
+
+} // namespace chromeos_update_engine