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@@ -41,6 +41,7 @@ using android::fs_mgr::LpMetadata;
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using android::fs_mgr::MetadataBuilder;
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using android::fs_mgr::Partition;
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using android::fs_mgr::PartitionOpener;
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using android::fs_mgr::SlotNumberForSlotSuffix;
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static constexpr std::chrono::milliseconds kMapTimeout{ 1000 };
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@@ -48,13 +49,17 @@ static std::string GetSuperDevice() {
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return "/dev/block/by-name/" + fs_mgr_get_super_partition_name();
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}
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static bool UnmapPartitionOnDeviceMapper(const std::string& partition_name) {
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auto state = DeviceMapper::Instance().GetState(partition_name);
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static std::string AddSlotSuffix(const std::string& partition_name) {
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return partition_name + fs_mgr_get_slot_suffix();
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}
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static bool UnmapPartitionWithSuffixOnDeviceMapper(const std::string& partition_name_suffix) {
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auto state = DeviceMapper::Instance().GetState(partition_name_suffix);
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if (state == DmDeviceState::INVALID) {
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return true;
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}
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if (state == DmDeviceState::ACTIVE) {
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return DestroyLogicalPartition(partition_name);
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return DestroyLogicalPartition(partition_name_suffix);
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}
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LOG(ERROR) << "Unknown device mapper state: "
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<< static_cast<std::underlying_type_t<DmDeviceState>>(state);
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@@ -63,12 +68,17 @@ static bool UnmapPartitionOnDeviceMapper(const std::string& partition_name) {
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bool UpdaterRuntime::MapPartitionOnDeviceMapper(const std::string& partition_name,
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std::string* path) {
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auto state = DeviceMapper::Instance().GetState(partition_name);
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auto partition_name_suffix = AddSlotSuffix(partition_name);
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auto state = DeviceMapper::Instance().GetState(partition_name_suffix);
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if (state == DmDeviceState::INVALID) {
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CreateLogicalPartitionParams params = {
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.block_device = GetSuperDevice(),
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.metadata_slot = 0,
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.partition_name = partition_name,
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// If device supports A/B, apply non-A/B update to the partition at current slot. Otherwise,
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// SlotNumberForSlotSuffix("") returns 0.
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.metadata_slot = SlotNumberForSlotSuffix(fs_mgr_get_slot_suffix()),
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// If device supports A/B, apply non-A/B update to the partition at current slot. Otherwise,
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// fs_mgr_get_slot_suffix() returns empty string.
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.partition_name = partition_name_suffix,
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.force_writable = true,
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.timeout_ms = kMapTimeout,
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};
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@@ -76,7 +86,7 @@ bool UpdaterRuntime::MapPartitionOnDeviceMapper(const std::string& partition_nam
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}
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if (state == DmDeviceState::ACTIVE) {
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return DeviceMapper::Instance().GetDmDevicePathByName(partition_name, path);
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return DeviceMapper::Instance().GetDmDevicePathByName(partition_name_suffix, path);
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}
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LOG(ERROR) << "Unknown device mapper state: "
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<< static_cast<std::underlying_type_t<DmDeviceState>>(state);
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@@ -84,7 +94,7 @@ bool UpdaterRuntime::MapPartitionOnDeviceMapper(const std::string& partition_nam
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}
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bool UpdaterRuntime::UnmapPartitionOnDeviceMapper(const std::string& partition_name) {
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return ::UnmapPartitionOnDeviceMapper(partition_name);
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return ::UnmapPartitionWithSuffixOnDeviceMapper(AddSlotSuffix(partition_name));
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}
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namespace { // Ops
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@@ -126,22 +136,23 @@ using OpMap = std::map<std::string, OpFunction>;
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bool PerformOpResize(const OpParameters& params) {
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if (!params.ExpectArgSize(2)) return false;
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const auto& partition_name = params.arg(0);
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const auto& partition_name_suffix = AddSlotSuffix(params.arg(0));
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auto size = params.uint_arg(1, "size");
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if (!size.has_value()) return false;
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auto partition = params.builder->FindPartition(partition_name);
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auto partition = params.builder->FindPartition(partition_name_suffix);
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if (partition == nullptr) {
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LOG(ERROR) << "Failed to find partition " << partition_name
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LOG(ERROR) << "Failed to find partition " << partition_name_suffix
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<< " in dynamic partition metadata.";
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return false;
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}
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if (!UnmapPartitionOnDeviceMapper(partition_name)) {
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LOG(ERROR) << "Cannot unmap " << partition_name << " before resizing.";
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if (!UnmapPartitionWithSuffixOnDeviceMapper(partition_name_suffix)) {
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LOG(ERROR) << "Cannot unmap " << partition_name_suffix << " before resizing.";
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return false;
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}
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if (!params.builder->ResizePartition(partition, size.value())) {
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LOG(ERROR) << "Failed to resize partition " << partition_name << " to size " << *size << ".";
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LOG(ERROR) << "Failed to resize partition " << partition_name_suffix << " to size " << *size
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<< ".";
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return false;
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}
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return true;
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@@ -149,24 +160,25 @@ bool PerformOpResize(const OpParameters& params) {
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bool PerformOpRemove(const OpParameters& params) {
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if (!params.ExpectArgSize(1)) return false;
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const auto& partition_name = params.arg(0);
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const auto& partition_name_suffix = AddSlotSuffix(params.arg(0));
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if (!UnmapPartitionOnDeviceMapper(partition_name)) {
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LOG(ERROR) << "Cannot unmap " << partition_name << " before removing.";
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if (!UnmapPartitionWithSuffixOnDeviceMapper(partition_name_suffix)) {
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LOG(ERROR) << "Cannot unmap " << partition_name_suffix << " before removing.";
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return false;
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}
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params.builder->RemovePartition(partition_name);
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params.builder->RemovePartition(partition_name_suffix);
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return true;
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}
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bool PerformOpAdd(const OpParameters& params) {
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if (!params.ExpectArgSize(2)) return false;
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const auto& partition_name = params.arg(0);
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const auto& group_name = params.arg(1);
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const auto& partition_name_suffix = AddSlotSuffix(params.arg(0));
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const auto& group_name_suffix = AddSlotSuffix(params.arg(1));
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if (params.builder->AddPartition(partition_name, group_name, LP_PARTITION_ATTR_READONLY) ==
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nullptr) {
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LOG(ERROR) << "Failed to add partition " << partition_name << " to group " << group_name << ".";
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if (params.builder->AddPartition(partition_name_suffix, group_name_suffix,
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LP_PARTITION_ATTR_READONLY) == nullptr) {
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LOG(ERROR) << "Failed to add partition " << partition_name_suffix << " to group "
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<< group_name_suffix << ".";
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return false;
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}
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return true;
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@@ -174,21 +186,21 @@ bool PerformOpAdd(const OpParameters& params) {
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bool PerformOpMove(const OpParameters& params) {
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if (!params.ExpectArgSize(2)) return false;
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const auto& partition_name = params.arg(0);
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const auto& new_group = params.arg(1);
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const auto& partition_name_suffix = AddSlotSuffix(params.arg(0));
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const auto& new_group_name_suffix = AddSlotSuffix(params.arg(1));
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auto partition = params.builder->FindPartition(partition_name);
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auto partition = params.builder->FindPartition(partition_name_suffix);
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if (partition == nullptr) {
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LOG(ERROR) << "Cannot move partition " << partition_name << " to group " << new_group
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<< " because it is not found.";
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LOG(ERROR) << "Cannot move partition " << partition_name_suffix << " to group "
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<< new_group_name_suffix << " because it is not found.";
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return false;
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}
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auto old_group = partition->group_name();
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if (old_group != new_group) {
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if (!params.builder->ChangePartitionGroup(partition, new_group)) {
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LOG(ERROR) << "Cannot move partition " << partition_name << " from group " << old_group
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<< " to group " << new_group << ".";
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auto old_group_name_suffix = partition->group_name();
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if (old_group_name_suffix != new_group_name_suffix) {
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if (!params.builder->ChangePartitionGroup(partition, new_group_name_suffix)) {
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LOG(ERROR) << "Cannot move partition " << partition_name_suffix << " from group "
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<< old_group_name_suffix << " to group " << new_group_name_suffix << ".";
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return false;
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}
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}
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@@ -197,22 +209,22 @@ bool PerformOpMove(const OpParameters& params) {
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bool PerformOpAddGroup(const OpParameters& params) {
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if (!params.ExpectArgSize(2)) return false;
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const auto& group_name = params.arg(0);
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const auto& group_name_suffix = AddSlotSuffix(params.arg(0));
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auto maximum_size = params.uint_arg(1, "maximum_size");
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if (!maximum_size.has_value()) return false;
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auto group = params.builder->FindGroup(group_name);
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auto group = params.builder->FindGroup(group_name_suffix);
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if (group != nullptr) {
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LOG(ERROR) << "Cannot add group " << group_name << " because it already exists.";
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LOG(ERROR) << "Cannot add group " << group_name_suffix << " because it already exists.";
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return false;
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}
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if (maximum_size.value() == 0) {
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LOG(WARNING) << "Adding group " << group_name << " with no size limits.";
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LOG(WARNING) << "Adding group " << group_name_suffix << " with no size limits.";
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}
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if (!params.builder->AddGroup(group_name, maximum_size.value())) {
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LOG(ERROR) << "Failed to add group " << group_name << " with maximum size "
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if (!params.builder->AddGroup(group_name_suffix, maximum_size.value())) {
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LOG(ERROR) << "Failed to add group " << group_name_suffix << " with maximum size "
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<< maximum_size.value() << ".";
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return false;
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}
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@@ -221,20 +233,20 @@ bool PerformOpAddGroup(const OpParameters& params) {
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bool PerformOpResizeGroup(const OpParameters& params) {
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if (!params.ExpectArgSize(2)) return false;
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const auto& group_name = params.arg(0);
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const auto& group_name_suffix = AddSlotSuffix(params.arg(0));
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auto new_size = params.uint_arg(1, "maximum_size");
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if (!new_size.has_value()) return false;
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auto group = params.builder->FindGroup(group_name);
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auto group = params.builder->FindGroup(group_name_suffix);
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if (group == nullptr) {
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LOG(ERROR) << "Cannot resize group " << group_name << " because it is not found.";
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LOG(ERROR) << "Cannot resize group " << group_name_suffix << " because it is not found.";
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return false;
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}
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auto old_size = group->maximum_size();
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if (old_size != new_size.value()) {
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if (!params.builder->ChangeGroupSize(group_name, new_size.value())) {
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LOG(ERROR) << "Cannot resize group " << group_name << " from " << old_size << " to "
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if (!params.builder->ChangeGroupSize(group_name_suffix, new_size.value())) {
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LOG(ERROR) << "Cannot resize group " << group_name_suffix << " from " << old_size << " to "
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<< new_size.value() << ".";
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return false;
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}
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@@ -243,8 +255,8 @@ bool PerformOpResizeGroup(const OpParameters& params) {
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}
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std::vector<std::string> ListPartitionNamesInGroup(MetadataBuilder* builder,
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const std::string& group_name) {
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auto partitions = builder->ListPartitionsInGroup(group_name);
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const std::string& group_name_suffix) {
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auto partitions = builder->ListPartitionsInGroup(group_name_suffix);
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std::vector<std::string> partition_names;
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std::transform(partitions.begin(), partitions.end(), std::back_inserter(partition_names),
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[](Partition* partition) { return partition->name(); });
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@@ -253,15 +265,16 @@ std::vector<std::string> ListPartitionNamesInGroup(MetadataBuilder* builder,
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bool PerformOpRemoveGroup(const OpParameters& params) {
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if (!params.ExpectArgSize(1)) return false;
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const auto& group_name = params.arg(0);
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const auto& group_name_suffix = AddSlotSuffix(params.arg(0));
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auto partition_names = ListPartitionNamesInGroup(params.builder, group_name);
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auto partition_names = ListPartitionNamesInGroup(params.builder, group_name_suffix);
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if (!partition_names.empty()) {
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LOG(ERROR) << "Cannot remove group " << group_name << " because it still contains partitions ["
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LOG(ERROR) << "Cannot remove group " << group_name_suffix
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<< " because it still contains partitions ["
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<< android::base::Join(partition_names, ", ") << "]";
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return false;
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}
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params.builder->RemoveGroupAndPartitions(group_name);
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params.builder->RemoveGroupAndPartitions(group_name_suffix);
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return true;
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}
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@@ -269,16 +282,16 @@ bool PerformOpRemoveAllGroups(const OpParameters& params) {
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if (!params.ExpectArgSize(0)) return false;
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auto group_names = params.builder->ListGroups();
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for (const auto& group_name : group_names) {
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auto partition_names = ListPartitionNamesInGroup(params.builder, group_name);
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for (const auto& partition_name : partition_names) {
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if (!UnmapPartitionOnDeviceMapper(partition_name)) {
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LOG(ERROR) << "Cannot unmap " << partition_name << " before removing group " << group_name
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<< ".";
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for (const auto& group_name_suffix : group_names) {
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auto partition_names = ListPartitionNamesInGroup(params.builder, group_name_suffix);
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for (const auto& partition_name_suffix : partition_names) {
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if (!UnmapPartitionWithSuffixOnDeviceMapper(partition_name_suffix)) {
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LOG(ERROR) << "Cannot unmap " << partition_name_suffix << " before removing group "
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<< group_name_suffix << ".";
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return false;
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}
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}
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params.builder->RemoveGroupAndPartitions(group_name);
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params.builder->RemoveGroupAndPartitions(group_name_suffix);
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}
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return true;
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}
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