---
title: vfs_setextendedsecurity
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1523360-vfs_setextendedsecurity
---

# vfs_setextendedsecurity

Mark a filesystem as supporting security controls beyond POSIX permissions.

## Declaration

```occ
void vfs_setextendedsecurity(mount_t mp);
```

## Parameters

- `mp`: Mount to test.

## Return Value

Return Value void.

## Discussion

Discussion Specific controls include ACLs, file owner UUIDs, and group UUIDs.