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Continue converting the proto-layer getsockopt callbacks to the sockopt_t interface, splitting pep_getsockopt() into a do_pep_getsockopt() helper that takes a sockopt_t. The thin pep_getsockopt() wrapper keeps its __user signature for now: it builds a user-backed sockopt_t with sockopt_init_user(), calls the helper, and writes the returned length back to optlen. The helper uses copy_to_iter() instead of copy_to_user(). No functional change. Acked-by: Rémi Denis-Courmont <[email protected]> Reviewed-by: Joe Damato <[email protected]> Acked-by: Stanislav Fomichev <[email protected]> Signed-off-by: Breno Leitao <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>