Merge "Add installd method to delete CE snapshots." am: 4ce8b0dd93 am: 4c804198a4 am: cfc430b133 am: 053054eefc
Change-Id: I3d1a40a9b6896db725a3751887b994a8d49eae1a
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index 26f9d79..657409b 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -42,6 +42,7 @@
#include <android-base/file.h>
#include <android-base/logging.h>
+#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/scopeguard.h>
#include <android-base/stringprintf.h>
@@ -75,6 +76,7 @@
#define LOG_TAG "installd"
#endif
+using android::base::ParseUint;
using android::base::StringPrintf;
using std::endl;
@@ -1101,6 +1103,43 @@
return ok();
}
+binder::Status InstalldNativeService::destroyCeSnapshotsNotSpecified(
+ const std::optional<std::string> &volumeUuid, const int32_t user,
+ const std::vector<int32_t>& retainSnapshotIds) {
+ ENFORCE_UID(AID_SYSTEM);
+ CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid);
+ std::lock_guard<std::recursive_mutex> lock(mLock);
+
+ const char* volume_uuid = volumeUuid ? volumeUuid->c_str() : nullptr;
+
+ auto base_path = create_data_misc_ce_rollback_base_path(volume_uuid, user);
+
+ std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(base_path.c_str()), closedir);
+ if (!dir) {
+ return error(-1, "Failed to open rollback base dir " + base_path);
+ }
+
+ struct dirent* ent;
+ while ((ent = readdir(dir.get()))) {
+ if (ent->d_type != DT_DIR) {
+ continue;
+ }
+
+ uint snapshot_id;
+ bool parse_ok = ParseUint(ent->d_name, &snapshot_id);
+ if (parse_ok &&
+ std::find(retainSnapshotIds.begin(), retainSnapshotIds.end(),
+ snapshot_id) == retainSnapshotIds.end()) {
+ auto rollback_path = create_data_misc_ce_rollback_path(
+ volume_uuid, user, snapshot_id);
+ int res = delete_dir_contents_and_dir(rollback_path, true /* ignore_if_missing */);
+ if (res != 0) {
+ return error(res, "Failed clearing snapshot " + rollback_path);
+ }
+ }
+ }
+ return ok();
+}
binder::Status InstalldNativeService::moveCompleteApp(const std::optional<std::string>& fromUuid,
const std::optional<std::string>& toUuid, const std::string& packageName,
diff --git a/cmds/installd/InstalldNativeService.h b/cmds/installd/InstalldNativeService.h
index 8e22c3e..08be4d9 100644
--- a/cmds/installd/InstalldNativeService.h
+++ b/cmds/installd/InstalldNativeService.h
@@ -69,6 +69,8 @@
binder::Status destroyAppDataSnapshot(const std::optional<std::string> &volumeUuid,
const std::string& packageName, const int32_t user, const int64_t ceSnapshotInode,
const int32_t snapshotId, int32_t storageFlags);
+ binder::Status destroyCeSnapshotsNotSpecified(const std::optional<std::string> &volumeUuid,
+ const int32_t user, const std::vector<int32_t>& retainSnapshotIds);
binder::Status getAppSize(const std::optional<std::string>& uuid,
const std::vector<std::string>& packageNames, int32_t userId, int32_t flags,
diff --git a/cmds/installd/binder/android/os/IInstalld.aidl b/cmds/installd/binder/android/os/IInstalld.aidl
index ca95cb3..e188807 100644
--- a/cmds/installd/binder/android/os/IInstalld.aidl
+++ b/cmds/installd/binder/android/os/IInstalld.aidl
@@ -114,6 +114,8 @@
int userId, int snapshotId, int storageFlags);
void restoreAppDataSnapshot(@nullable @utf8InCpp String uuid, in @utf8InCpp String packageName,
int appId, @utf8InCpp String seInfo, int user, int snapshotId, int storageflags);
+ void destroyCeSnapshotsNotSpecified(@nullable @utf8InCpp String uuid, int userId,
+ in int[] retainSnapshotIds);
void destroyAppDataSnapshot(@nullable @utf8InCpp String uuid, @utf8InCpp String packageName,
int userId, long ceSnapshotInode, int snapshotId, int storageFlags);
void tryMountDataMirror(@nullable @utf8InCpp String volumeUuid);
diff --git a/cmds/installd/tests/installd_service_test.cpp b/cmds/installd/tests/installd_service_test.cpp
index 7278677..1e7559d 100644
--- a/cmds/installd/tests/installd_service_test.cpp
+++ b/cmds/installd/tests/installd_service_test.cpp
@@ -640,6 +640,46 @@
"com.foo", 0, 0, 43, FLAG_STORAGE_DE).isOk());
}
+TEST_F(AppDataSnapshotTest, DestroyCeSnapshotsNotSpecified) {
+ auto rollback_ce_dir_in_1 = create_data_misc_ce_rollback_path("TEST", 0, 1543);
+ auto rollback_ce_dir_in_2 = create_data_misc_ce_rollback_path("TEST", 0, 77);
+ auto rollback_ce_dir_out_1 = create_data_misc_ce_rollback_path("TEST", 0, 1500);
+ auto rollback_ce_dir_out_2 = create_data_misc_ce_rollback_path("TEST", 0, 2);
+
+ // Create snapshots
+ ASSERT_TRUE(mkdirs(rollback_ce_dir_in_1 + "/com.foo/", 0700));
+ ASSERT_TRUE(android::base::WriteStringToFile(
+ "CE_RESTORE_CONTENT", rollback_ce_dir_in_1 + "/com.foo/file1",
+ 0700, 10000, 20000, false /* follow_symlinks */));
+
+ ASSERT_TRUE(mkdirs(rollback_ce_dir_in_2 + "/com.foo/", 0700));
+ ASSERT_TRUE(android::base::WriteStringToFile(
+ "CE_RESTORE_CONTENT", rollback_ce_dir_in_2 + "/com.foo/file1",
+ 0700, 10000, 20000, false /* follow_symlinks */));
+
+ ASSERT_TRUE(mkdirs(rollback_ce_dir_out_1 + "/com.foo/", 0700));
+ ASSERT_TRUE(android::base::WriteStringToFile(
+ "CE_RESTORE_CONTENT", rollback_ce_dir_out_1 + "/com.foo/file1",
+ 0700, 10000, 20000, false /* follow_symlinks */));
+
+ ASSERT_TRUE(mkdirs(rollback_ce_dir_out_2 + "/com.foo/", 0700));
+ ASSERT_TRUE(android::base::WriteStringToFile(
+ "CE_RESTORE_CONTENT", rollback_ce_dir_out_2 + "/com.foo/file1",
+ 0700, 10000, 20000, false /* follow_symlinks */));
+
+ ASSERT_TRUE(service->destroyCeSnapshotsNotSpecified(
+ std::make_optional<std::string>("TEST"), 0, { 1543, 77 }).isOk());
+
+ // Check only snapshots not specified are deleted.
+ struct stat sb;
+ ASSERT_EQ(0, stat((rollback_ce_dir_in_1 + "/com.foo").c_str(), &sb));
+ ASSERT_EQ(0, stat((rollback_ce_dir_in_2 + "/com.foo").c_str(), &sb));
+ ASSERT_EQ(-1, stat((rollback_ce_dir_out_1 + "/com.foo").c_str(), &sb));
+ ASSERT_EQ(ENOENT, errno);
+ ASSERT_EQ(-1, stat((rollback_ce_dir_out_2 + "/com.foo").c_str(), &sb));
+ ASSERT_EQ(ENOENT, errno);
+}
+
TEST_F(AppDataSnapshotTest, RestoreAppDataSnapshot_WrongVolumeUuid) {
// Setup rollback data to make sure that fails due to wrong volumeUuid being
// passed, not because of some other reason.