---
title: vfs_fsadd
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1523490-vfs_fsadd
---

# vfs_fsadd

Register a filesystem with VFS.

## Declaration

```occ
int vfs_fsadd(struct vfs_fsentry *vfe, vfstable_t *handle);
```

## Parameters

- `vfe`: Filesystem information: table of vfs operations, list of vnode operation tables, filesystem type number (can be omitted with VFS_TBLNOTYPENUM flag), name, flags.
- `handle`: Opaque handle which will be passed to vfs_fsremove.

## Return Value

Return Value 0 for success, else an error code.

## Discussion

Discussion Typically called by a filesystem Kernel Extension when it is loaded.