Fuse-3.11.0

Introduction to Fuse

FUSE (Filesystem in Userspace) is a simple interface for userspace programs to export a virtual filesystem to the Linux kernel. Fuse also aims to provide a secure method for non privileged users to create and mount their own filesystem implementations.

This package is known to build and work properly using an LFS-11.2 platform.

Package Information

Fuse Dependencies

Optional

Doxygen-1.9.4 (to rebuild the API documentation) and pytest (required for tests)

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/fuse

Kernel Configuration

Enable the following options in the kernel configuration and recompile the kernel if necessary:

File systems  --->
  <*/M> FUSE (Filesystem in Userspace) support [CONFIG_FUSE_FS]

Character devices in user space should be enabled too for running the tests:

File systems  --->
  <*/M> FUSE (Filesystem in Userspace) support  [CONFIG_FUSE_FS]
  <*/M>   Character device in Userspace support [CONFIG_CUSE]

Installation of Fuse

Install Fuse by running the following commands:

sed -i '/^udev/,$ s/^/#/' util/meson.build &&

mkdir build &&
cd    build &&

meson --prefix=/usr --buildtype=release .. &&
ninja

The API documentation is included in the package, but if you have Doxygen-1.9.4 installed and wish to rebuild it, issue:

pushd .. &&
  doxygen doc/Doxyfile &&
popd

To test the results, run (as the root user):

python3 -m pytest test/

The pytest Python module is required for the tests. One test named test_cuse will fail if the CONFIG_CUSE configuration item was not enabled when the kernel was built. One test named test_ctests.py will produce a warning because a deprecated Python module is used.

Now, as the root user:

ninja install                  &&
chmod u+s /usr/bin/fusermount3 &&

cd ..                          &&
install -v -m755 -d /usr/share/doc/fuse-3.11.0 &&
install -v -m644    doc/{README.NFS,kernel.txt} \
                    /usr/share/doc/fuse-3.11.0 &&
cp -Rv doc/html     /usr/share/doc/fuse-3.11.0

Command Explanations

sed ... util/meson.build: This command disables the installation of a boot script and udev rule that are not needed.

--buildtype=release: Specify a buildtype suitable for stable releases of the package, as the default may produce unoptimized binaries.

Configuring fuse

Config Files

Some options regarding mount policy can be set in the file /etc/fuse.conf. To install the file run the following command as the root user:

cat > /etc/fuse.conf << "EOF"
# Set the maximum number of FUSE mounts allowed to non-root users.
# The default is 1000.
#
#mount_max = 1000

# Allow non-root users to specify the 'allow_other' or 'allow_root'
# mount options.
#
#user_allow_other
EOF

Additional information about the meaning of the configuration options are found in the man page.

Contents

Installed Programs: fusermount3 and mount.fuse3
Installed Libraries: libfuse3.so
Installed Directory: /usr/include/fuse3 and /usr/share/doc/fuse-3.11.0

Short Descriptions

fusermount3

is a suid root program to mount and unmount Fuse filesystems

mount.fuse3

is the command mount calls to mount a Fuse filesystem

libfuse3.so

contains the FUSE API functions