aa_unpack_str
int aa_unpack_str(struct aa_ext *e, const char **string, const char *name);
if (!aa_unpack_str(e, &name, NULL))
(void) aa_unpack_str(e, &profile->rename, "rename");
(void) aa_unpack_str(e, &profile->attach.xmatch_str, "attach");
if (aa_unpack_str(e, &name, "namespace")) {
EXPORT_SYMBOL_IF_KUNIT(aa_unpack_str);
int res = aa_unpack_str(e, &tmp, name);
size = aa_unpack_str(puf->e, &string, NULL);
size = aa_unpack_str(puf->e, &string, TEST_STRING_NAME);
size = aa_unpack_str(puf->e, &string, TEST_STRING_NAME);