---
title: user64_sf_hdtr
framework: Kernel
role: symbol
platforms: [macOS 10.6+]
path: kernel/user64_sf_hdtr
---

# user64_sf_hdtr

## Declaration

```occ
struct user64_sf_hdtr {
    ...
};
```

## Topics

### Instance Properties

- [hdr_cnt](kernel/user64_sf_hdtr/1499154-hdr_cnt.md)
- [headers](kernel/user64_sf_hdtr/1499435-headers.md)
- [trailers](kernel/user64_sf_hdtr/1499124-trailers.md)
- [trl_cnt](kernel/user64_sf_hdtr/1499387-trl_cnt.md)