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ae2483a260
This cosmetic change is needed for audit support, specifically to be able to filter according to cross-execution boundaries. Add landlock_get_applicable_subject(), mainly a copy of landlock_get_applicable_domain(), which will fully replace it in a following commit. Optimize current_check_access_path() to only handle the access request. Partially replace get_current_fs_domain() with explicit calls to landlock_get_applicable_subject(). The remaining ones will follow with more changes. Remove explicit domain->num_layers check which is now part of the landlock_get_applicable_subject() call. Cc: Günther Noack <gnoack@google.com> Link: https://lore.kernel.org/r/20250320190717.2287696-5-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net>