Remove code_cache info from parent's inode when code_cache is removed
Symptom:
After FOTA, shared_prefs directory of app is cleared.
Root cause:
PackageManager clears code_cache directory of all apps during first
boot after FOTA.
PackageManager saves inode number of code_cache directory to xattr of
app data directory in advance and accesses to code_cache directory by
saved inode number because app data stored in CE directory are encrypted
during boot for FBE.
However before FOTA, code_cache directory was deleted and shared_prefs
directory which has the same inode number as deleted code_cache
directory was created.
As a result PackageManager clears shared_prefs directory which has
inode number of code_cache directory.
Solution:
Remove inode number from xattr of app data directory when clear app
data.
Bug: 67140392
Change-Id: Ic7a6268a417aa41e2712499f397e6ec217b7cb3e
diff --git a/cmds/installd/utils.h b/cmds/installd/utils.h
index 070da84..ac6a488 100644
--- a/cmds/installd/utils.h
+++ b/cmds/installd/utils.h
@@ -120,6 +120,7 @@
int write_path_inode(const std::string& parent, const char* name, const char* inode_xattr);
std::string read_path_inode(const std::string& parent, const char* name, const char* inode_xattr);
+void remove_path_xattr(const std::string& path, const char* inode_xattr);
int validate_system_app_path(const char* path);
bool validate_secondary_dex_path(const std::string& pkgname, const std::string& dex_path,