/postinstall/* does not search for a lib in /vendor or /odm
There has been no section in the linker config file for the binaries
under /postinstall. As a result, the binaries were run with the legacy
default config where /vendor/lib and /odm/lib are added to the search
paths. This is causing selinux denials as the binaries for OTA are not
allowed to access /vendor/lib or /odm/lib, but the dynamic linker calls
realpath(3) on the paths to canonicalize them.
Fixing the issue by letting /postinstall/* binaries to run with a
dedicated linker namespace config, where /vendor/lib and /odm/lib are
not added to the search paths. Not having the paths is okay because
he OTA binaries should not have dependency to the libs there.
Test: do the OTA, selinux denials on postinstall_file is not shown
Test: above test should pass on wahoo, marlin and pre-treble devices
3 files changed