FUSEFS [FreeBSD WIKI]

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===== FUSEFS =====

FUSE (Filesystem in USErspace) implements a file system that is serviced by a userspace program.

===== History =====

The FUSE module has been worked on by several people:

  * CsabaHenk, for Google Summer of Code 2007 ("fuse4bsd") - start of the port, unstable code
  * IlyaPutsikau, for Google Summer of Code 2011 - continued the port by rebasing from macfuse, unfinished project ([[SOC2011IlyaPutsikau]])
  * AttilioRao and GeorgeNevilleNeil finished Ilya's %%GSoC%% project and imported it into the base system in 2012.
  * AlanSomers overhauled the driver and added a test suite in 2019, sponsored by the %%FreeBSD%% Foundation.

===== Status =====

As of 31-July-2019, the module implements version 7.23 of the FUSE protocol, with a few unimplemented features:
  * FUSE_IOCTL
  * BATCH_FORGET
  * flock(2) (implemented in-kernel, so it doesn't work for networked file systems)
  * posix_fallocate(2)
  * FUSE_AUTO_INVAL_DATA
  * FUSE_READDIRPLUS
  * poll(2) (works for pipes and sockets, but not for regular files)
  * FUSE_ASYNC_DIO
  * FUSE_NO_OPEN_SUPPORT

===== Links =====

  * [[https://github.com/libfuse/libfuse|libfuse GitHub repository]] --Library used by many, but not all, FUSE file systems

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