---
title: vfs_ioctl
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.12+]
path: kernel/vfsops/1646282-vfs_ioctl
---

# vfs_ioctl

## Declaration

```occ
int (*vfs_ioctl)(struct mount *mp, u_long command, caddr_t data, int flags, vfs_context_t context);
```