abd_copy_from_buf_off
abd_copy_from_buf_off(abd, &this_lb, 0, asize);
abd_copy_from_buf_off(abd_data, buf, 0, size);
abd_copy_from_buf_off(abd_meta, buf, 0, size);
abd_copy_from_buf_off(abd, this_lb, 0, asize);
void abd_copy_from_buf_off(abd_t *, const void *, size_t, size_t);
abd_copy_from_buf_off(abd, buf, 0, size);
abd_copy_from_buf_off(abd, &zec_magic,
abd_copy_from_buf_off(abd, &eck.zec_cksum,
abd_copy_from_buf_off(abd, &cksum,
abd_copy_from_buf_off(abd, &verifier, eck_offset,
abd_copy_from_buf_off(abd, &expected_cksum, eck_offset,