Documentation/filesystems/fscrypt.rst

510   `FS_IOC_ADD_ENCRYPTION_KEY`_.  Then, the ``key_spec.u.identifier``
685             struct fscrypt_key_specifier key_spec;
715   ``key_spec.type`` must contain FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR, and
716   ``key_spec.u.descriptor`` must contain the descriptor of the key
723   policies, then ``key_spec.type`` must contain
724   FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER, and ``key_spec.u.identifier`` is
739   the raw key and whose ``type`` field matches ``key_spec.type``.
865             struct fscrypt_key_specifier key_spec;
874 - The key to remove is specified by ``key_spec``:
877       ``key_spec.type`` to FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR and fill
878       in ``key_spec.u.descriptor``.  To remove this type of key, the
883       ``key_spec.type`` to FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER and fill
884       in ``key_spec.u.identifier``.
962             struct fscrypt_key_specifier key_spec;
976 The caller must zero all input fields, then fill in ``key_spec``:
979       ``key_spec.type`` to FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR and fill
980       in ``key_spec.u.descriptor``.
983       ``key_spec.type`` to FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER and fill
984       in ``key_spec.u.identifier``.