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snapshot: helper to get access snapshot_state path

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/metadata/ota/snapshot_state is a temporary file that keeps track of
snapshot merge operations across reboots.

Bug: 138817833
Test: m
Change-Id: I9785db3f73e1575b8ac8a522d938d09f8948e1b0
Signed-off-by: Alessio Balsini <balsini@google.com>
This commit is contained in:
Alessio Balsini 2020-01-21 18:47:21 +00:00
parent e6f2b7d884
commit be0e44d0f1
2 changed files with 8 additions and 0 deletions
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4
fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
View file

@ -395,6 +395,10 @@ class SnapshotManager final {
bool WriteSnapshotUpdateStatus(LockedFile* file, const SnapshotUpdateStatus& status);
std::string GetStateFilePath() const;
// Interact with /metadata/ota/merge_state.
// This file contains information related to the snapshot merge process.
std::string GetMergeStateFilePath() const;
// Helpers for merging.
bool SwitchSnapshotToMerge(LockedFile* lock, const std::string& name);
bool RewriteSnapshotDeviceTable(const std::string& dm_name);

4
fs_mgr/libsnapshot/snapshot.cpp
View file

@ -1739,6 +1739,10 @@ std::string SnapshotManager::GetStateFilePath() const {
return metadata_dir_ + "/state"s;
}
std::string SnapshotManager::GetMergeStateFilePath() const {
return metadata_dir_ + "/merge_state"s;
}
std::string SnapshotManager::GetLockPath() const {
return metadata_dir_;
}