Filesystem in Userspace

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Filesystem in Userspace (FUSE) provides a way for users to mount file systems without needing special permissions (mounting in Linux is generally reserved to those with administrative privileges).



KERNEL Enable support for FUSE
File systems  --->
    <*> FUSE (Filesystem in Userspace) support

USE flags

USE flags for sys-fs/fuse An interface for filesystems implemented in userspace


As with most file systems, after building support for the file system into the kernel be sure to install the user space tools:

root #emerge --ask sys-fs/fuse



The following configuration files are available for FUSE:

  • /etc/fuse.conf

There are two configuration variables available in the fuse.conf file:

  • mount_max - Sets the maximum number of FUSE mounts allowed to non-root users (defaults to 1000 if unset).
  • user_allow_other - Allows non-root users to specify the allow_other or allow_root mount options. This is disabled for security reasons.



user $fusermount -h
fusermount: [options] mountpoint
 -h                 print help
 -V                 print version
 -o opt[,opt...]   mount options
 -u                 unmount
 -q                 quiet
 -z                 lazy unmount

Mounting filesystems

Use the fusermount command:

user $fusermount /path/to/mountpoint

Unmounting filesystems

Filesystems can be unmounted using either the umount or the fusermount command:

user $fusermount -u /path/to/mountpoint


root #emerge --ask --depclean --verbose sys-fs/fuse

See also

  • Filesystem — a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve, and update data as well as manage the available space on the device(s) which contain it.

External resources