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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | COLOPHON |
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FLATPAK OVERRIDE(1) flatpak override FLATPAK OVERRIDE(1)
flatpak-override - Override application requirements
flatpak override [OPTION...] [APP]
Overrides the application specified runtime requirements. This
can be used to grant a sandboxed application more or less
resources than it requested.
By default the application gets access to the resources it
requested when it is started. But the user can override it on a
particular instance by specifying extra arguments to flatpak run,
or every time by using flatpak override.
The application overrides are saved in text files residing in
$XDG_DATA_HOME/flatpak/overrides in user mode.
If the application ID APP is not specified then the overrides
affect all applications, but the per-application overrides can
override the global overrides.
Unless overridden with the --user or --installation options, this
command changes the default system-wide installation.
The following options are understood:
-h, --help
Show help options and exit.
-u, --user
Update a per-user installation.
--system
Update the default system-wide installation.
--installation=NAME
Updates a system-wide installation specified by NAME among
those defined in /etc/flatpak/installations.d/. Using
--installation=default is equivalent to using --system.
--share=SUBSYSTEM
Share a subsystem with the host session. This overrides the
Context section from the application metadata. SUBSYSTEM
must be one of: network, ipc. This option can be used
multiple times.
--unshare=SUBSYSTEM
Don't share a subsystem with the host session. This overrides
the Context section from the application metadata. SUBSYSTEM
must be one of: network, ipc. This option can be used
multiple times.
--socket=SOCKET
Expose a well-known socket to the application. This overrides
to the Context section from the application metadata. SOCKET
must be one of: x11, wayland, fallback-x11, pulseaudio,
system-bus, session-bus, ssh-auth, pcsc, cups, gpg-agent.
This option can be used multiple times.
--nosocket=SOCKET
Don't expose a well-known socket to the application. This
overrides to the Context section from the application
metadata. SOCKET must be one of: x11, wayland, fallback-x11,
pulseaudio, system-bus, session-bus, ssh-auth, pcsc, cups,
gpg-agent. This option can be used multiple times.
--device=DEVICE
Expose a device to the application. This overrides to the
Context section from the application metadata. DEVICE must
be one of: dri, input, kvm, shm, all. This option can be used
multiple times.
--nodevice=DEVICE
Don't expose a device to the application. This overrides to
the Context section from the application metadata. DEVICE
must be one of: dri, input, kvm, shm, all. This option can be
used multiple times.
--allow=FEATURE
Allow access to a specific feature. This updates the
[Context] group in the metadata. FEATURE must be one of:
devel, multiarch, bluetooth, canbus, per-app-dev-shm. This
option can be used multiple times.
See flatpak-build-finish(1) for the meaning of the various
features.
--disallow=FEATURE
Disallow access to a specific feature. This updates the
[Context] group in the metadata. FEATURE must be one of:
devel, multiarch, bluetooth, canbus, per-app-dev-shm. This
option can be used multiple times.
--filesystem=FILESYSTEM
Allow the application access to a subset of the filesystem.
This overrides to the Context section from the application
metadata. FILESYSTEM can be one of: home, host, host-os,
host-etc, xdg-desktop, xdg-documents, xdg-download,
xdg-music, xdg-pictures, xdg-public-share, xdg-templates,
xdg-videos, xdg-run, xdg-config, xdg-cache, xdg-data, an
absolute path, or a homedir-relative path like ~/dir or paths
relative to the xdg dirs, like xdg-download/subdir. The
optional :ro suffix indicates that the location will be
read-only. The optional :create suffix indicates that the
location will be read-write and created if it doesn't exist.
This option can be used multiple times. See the "[Context]
filesystems" list in flatpak-metadata(5) for details of the
meanings of these filesystems.
--nofilesystem=FILESYSTEM
Undo the effect of a previous --filesystem=FILESYSTEM in the
app's manifest or a lower-precedence layer of overrides,
and/or remove a previous --filesystem=FILESYSTEM from this
layer of overrides. This overrides the Context section of the
application metadata. FILESYSTEM can take the same values as
for --filesystem, but the :ro and :create suffixes are not
used here. This option can be used multiple times.
This option does not prevent access to a more narrowly-scoped
--filesystem. For example, if an application has the
equivalent of --filesystem=xdg-config/MyApp in its manifest
or as a system-wide override, and flatpak override --user
--nofilesystem=home as a per-user override, then it will be
prevented from accessing most of the home directory, but it
will still be allowed to access $XDG_CONFIG_HOME/MyApp.
As a special case, --nofilesystem=host:reset will ignore all
--filesystem permissions inherited from the app manifest or a
lower-precedence layer of overrides, in addition to having
the behaviour of --nofilesystem=host.
--add-policy=SUBSYSTEM.KEY=VALUE
Add generic policy option. For example,
"--add-policy=subsystem.key=v1 --add-policy=subsystem.key=v2"
would map to this metadata:
[Policy subsystem]
key=v1;v2;
This option can be used multiple times.
--remove-policy=SUBSYSTEM.KEY=VALUE
Remove generic policy option. This option can be used
multiple times.
--env=VAR=VALUE
Set an environment variable in the application. This
overrides to the Context section from the application
metadata. This option can be used multiple times.
--unset-env=VAR
Unset an environment variable in the application. This
overrides the unset-environment entry in the [Context] group
of the metadata, and the [Environment] group. This option can
be used multiple times.
--env-fd=FD
Read environment variables from the file descriptor FD, and
set them as if via --env. This can be used to avoid
environment variables and their values becoming visible to
other users.
Each environment variable is in the form VAR=VALUE followed
by a zero byte. This is the same format used by env -0 and
/proc/*/environ.
--own-name=NAME
Allow the application to own the well-known name NAME on the
session bus. This overrides to the Context section from the
application metadata. This option can be used multiple times.
--talk-name=NAME
Allow the application to talk to the well-known name NAME on
the session bus. This overrides to the Context section from
the application metadata. This option can be used multiple
times.
--no-talk-name=NAME
Don't allow the application to talk to the well-known name
NAME on the session bus. This overrides to the Context
section from the application metadata. This option can be
used multiple times.
--system-own-name=NAME
Allow the application to own the well known name NAME on the
system bus. If NAME ends with .*, it allows the application
to own all matching names. This overrides to the Context
section from the application metadata. This option can be
used multiple times.
--system-talk-name=NAME
Allow the application to talk to the well known name NAME on
the system bus. If NAME ends with .*, it allows the
application to talk to all matching names. This overrides to
the Context section from the application metadata. This
option can be used multiple times.
--system-no-talk-name=NAME
Don't allow the application to talk to the well known name
NAME on the system bus. If NAME ends with .*, it allows the
application to talk to all matching names. This overrides to
the Context section from the application metadata. This
option can be used multiple times.
--persist=FILENAME
If the application doesn't have access to the real homedir,
make the (homedir-relative) path FILENAME a bind mount to the
corresponding path in the per-application directory, allowing
that location to be used for persistent data. This overrides
to the Context section from the application metadata. This
option can be used multiple times.
--reset
Remove overrides. If an APP is given, remove the overrides
for that application, otherwise remove the global overrides.
--show
Shows overrides. If an APP is given, shows the overrides for
that application, otherwise shows the global overrides.
-v, --verbose
Print debug information during command processing.
--ostree-verbose
Print OSTree debug information during command processing.
$ flatpak override --nosocket=wayland org.gnome.gedit
$ flatpak override --filesystem=home org.mozilla.Firefox
flatpak(1), flatpak-run(1)
This page is part of the flatpak (a tool for building and
distributing desktop applications on Linux) project. Information
about the project can be found at ⟨http://flatpak.org/⟩. It is
not known how to report bugs for this man page; if you know,
please send a mail to man-pages@man7.org. This page was obtained
from the project's upstream Git repository
⟨https://github.com/flatpak/flatpak⟩ on 2023-12-22. (At that
time, the date of the most recent commit that was found in the
repository was 2023-12-08.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
flatpak FLATPAK OVERRIDE(1)
Pages that refer to this page: flatpak(1), flatpak-config(1), flatpak-run(1), flatpak-metadata(5)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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