1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 23ef7784eSAlexey Dobriyanconfig FUSE_FS 33ef7784eSAlexey Dobriyan tristate "FUSE (Filesystem in Userspace) support" 460bcc88aSSeth Forshee select FS_POSIX_ACL 53ef7784eSAlexey Dobriyan help 63ef7784eSAlexey Dobriyan With FUSE it is possible to implement a fully functional filesystem 73ef7784eSAlexey Dobriyan in a userspace program. 83ef7784eSAlexey Dobriyan 9807185ebSRobert P. J. Day There's also a companion library: libfuse2. This library is available 10807185ebSRobert P. J. Day from the FUSE homepage: 11c1b0c627SAndré Almeida <https://github.com/libfuse/> 12807185ebSRobert P. J. Day although chances are your distribution already has that library 13807185ebSRobert P. J. Day installed if you've installed the "fuse" package itself. 143ef7784eSAlexey Dobriyan 1572ef5e52SMauro Carvalho Chehab See <file:Documentation/filesystems/fuse.rst> for more information. 163ef7784eSAlexey Dobriyan See <file:Documentation/Changes> for needed library/utility version. 173ef7784eSAlexey Dobriyan 183ef7784eSAlexey Dobriyan If you want to develop a userspace FS, or if you want to use 193ef7784eSAlexey Dobriyan a filesystem based on FUSE, answer Y or M. 20807185ebSRobert P. J. Day 21807185ebSRobert P. J. Dayconfig CUSE 22807185ebSRobert P. J. Day tristate "Character device in Userspace support" 23807185ebSRobert P. J. Day depends on FUSE_FS 24807185ebSRobert P. J. Day help 25807185ebSRobert P. J. Day This FUSE extension allows character devices to be 26807185ebSRobert P. J. Day implemented in userspace. 27807185ebSRobert P. J. Day 28807185ebSRobert P. J. Day If you want to develop or use a userspace character device 29807185ebSRobert P. J. Day based on CUSE, answer Y or M. 30a62a8ef9SStefan Hajnoczi 31a62a8ef9SStefan Hajnocziconfig VIRTIO_FS 32a62a8ef9SStefan Hajnoczi tristate "Virtio Filesystem" 33a62a8ef9SStefan Hajnoczi depends on FUSE_FS 34a62a8ef9SStefan Hajnoczi select VIRTIO 35a62a8ef9SStefan Hajnoczi help 36a62a8ef9SStefan Hajnoczi The Virtio Filesystem allows guests to mount file systems from the 37a62a8ef9SStefan Hajnoczi host. 38a62a8ef9SStefan Hajnoczi 39a62a8ef9SStefan Hajnoczi If you want to share files between guests or with the host, answer Y 40a62a8ef9SStefan Hajnoczi or M. 41*1dd53957SVivek Goyal 42*1dd53957SVivek Goyalconfig FUSE_DAX 43*1dd53957SVivek Goyal bool "Virtio Filesystem Direct Host Memory Access support" 44*1dd53957SVivek Goyal default y 45*1dd53957SVivek Goyal depends on VIRTIO_FS 46*1dd53957SVivek Goyal depends on FS_DAX 47*1dd53957SVivek Goyal depends on DAX_DRIVER 48*1dd53957SVivek Goyal help 49*1dd53957SVivek Goyal This allows bypassing guest page cache and allows mapping host page 50*1dd53957SVivek Goyal cache directly in guest address space. 51*1dd53957SVivek Goyal 52*1dd53957SVivek Goyal If you want to allow mounting a Virtio Filesystem with the "dax" 53*1dd53957SVivek Goyal option, answer Y. 54