roots: Fix an issue with volume_for_path().
The earlier commit in 2dfc1a38982c4052bb32bc7fc06edeadf3908fb9
unintentionally changed the behavior. It gives a different result when
looking up non-existent mount points (e.g. /cache on marlin).
The logic behind volume_for_path("/xyz") is unclear:
- It's fine to return non-null value if it's called by
ensure_path_mounted() before accessing that file "/xyz". (Just based
on the function name, we're not actually having this case.)
- It should return nullptr if the caller is interested in the existence
of that particular mount point "/xyz".
This CL renames the function to volume_for_mount_point(), which does an
exact match by querying the given mount point from libfs_mgr. The former
volume_for_path() has been moved down to function scope for serving
ensure_path_mounted() only.
Test: Build and boot into recovery on bullhead and marlin respectively.
'View recovery logs'.
Test: 'Mount /system'
Test: 'Apply update from ADB'
Change-Id: I1a16390f57540cae08a2b8f3d439d17886975217
diff --git a/install.cpp b/install.cpp
index 507161c..74d1a68 100644
--- a/install.cpp
+++ b/install.cpp
@@ -653,7 +653,7 @@
std::chrono::duration<double> duration = std::chrono::system_clock::now() - start;
int time_total = static_cast<int>(duration.count());
- bool has_cache = volume_for_path("/cache") != nullptr;
+ bool has_cache = volume_for_mount_point("/cache") != nullptr;
// Skip logging the uncrypt_status on devices without /cache.
if (has_cache) {
static constexpr const char* UNCRYPT_STATUS = "/cache/recovery/uncrypt_status";