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https://github.com/flatpak/flatpak.git
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7070dbf96c
I don't think it makes sense to have to enable this for everything. It should be safe in the sense that you can't ever do more than the user can do anyway, and there is no way to use this to communicate with the rest of the system because you can't read from it. The worst this could ever cause is to overload the system, but the sandbox doesn't protect against that in any other way anyway.
256 lines
9.6 KiB
XML
256 lines
9.6 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<refentry id="flatpak-override">
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<refentryinfo>
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<title>flatpak override</title>
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<productname>flatpak</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Alexander</firstname>
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<surname>Larsson</surname>
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<email>alexl@redhat.com</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>flatpak override</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>flatpak-override</refname>
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<refpurpose>Override application requirements</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>flatpak override</command>
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<arg choice="opt" rep="repeat">OPTION</arg>
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<arg choice="plain">APP</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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Overrides the application specified runtime requirements. This can be used
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to grant a sandboxed application more or less resources than it requested.
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</para>
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<para>
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By default the application gets access to the resources it
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requested when it is started. But the user can override it
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on a particular instance by specifying extra arguments to
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flatpak run, or every time by using flatpak override.
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</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>-h</option></term>
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<term><option>--help</option></term>
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<listitem><para>
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Show help options and exit.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--share=SUBSYSTEM</option></term>
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<listitem><para>
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Share a subsystem with the host session. This overrides
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the Context section from the application metadata.
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SUBSYSTEM must be one of: network, ipc.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--unshare=SUBSYSTEM</option></term>
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<listitem><para>
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Don't share a subsystem with the host session. This overrides
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the Context section from the application metadata.
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SUBSYSTEM must be one of: network, ipc.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--socket=SOCKET</option></term>
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<listitem><para>
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Expose a well-known socket to the application. This overrides to
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the Context section from the application metadata.
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SOCKET must be one of: x11, wayland, pulseaudio, system-bus, session-bus.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--nosocket=SOCKET</option></term>
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<listitem><para>
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Don't expose a well-known socket to the application. This overrides to
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the Context section from the application metadata.
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SOCKET must be one of: x11, wayland, pulseaudio, system-bus, session-bus.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--device=DEVICE</option></term>
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<listitem><para>
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Expose a device to the application. This overrides to
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the Context section from the application metadata.
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DEVICE must be one of: dri, all.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--nodevice=DEVICE</option></term>
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<listitem><para>
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Don't expose a device to the application. This overrides to
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the Context section from the application metadata.
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DEVICE must be one of: dri, all.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--filesystem=FS</option></term>
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<listitem><para>
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Allow the application access to a subset of the filesystem.
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This overrides to the Context section from the application metadata.
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FS can be one of: home, host, xdg-desktop, xdg-documents, xdg-download
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xdg-music, xdg-pictures, xdg-public-share, xdg-templates, xdg-videos, xdg-run,
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an absolute path, or a homedir-relative path like ~/dir or paths
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relative to the xdg dirs, like xdg-download/subdir.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--env=VAR=VALUE</option></term>
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<listitem><para>
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Set an environment variable in the application.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--own-name=NAME</option></term>
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<listitem><para>
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Allow the application to own the well-known name NAME on the session bus.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--talk-name=NAME</option></term>
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<listitem><para>
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Allow the application to talk to the well-known name NAME on the session bus.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--system-own-name=NAME</option></term>
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<listitem><para>
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Allow the application to own the well known name NAME on the system bus.
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If NAME ends with .*, it allows the application to own all matching names.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--system-talk-name=NAME</option></term>
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<listitem><para>
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Allow the application to talk to the well known name NAME on the system bus.
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If NAME ends with .*, it allows the application to talk to all matching names.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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`
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<varlistentry>
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<term><option>--persist=FILENAME</option></term>
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<listitem><para>
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If the application doesn't have access to the real homedir, make the (homedir-relative) path
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FILENAME a bind mount to the corresponding path in the per-application directory,
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allowing that location to be used for persistent data.
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This overrides to the Context section from the application metadata.
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This option can be used multiple times.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-v</option></term>
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<term><option>--verbose</option></term>
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<listitem><para>
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Print debug information during command processing.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--version</option></term>
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<listitem><para>
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Print version information and exit.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>
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<command>$ flatpak override --nosocket=wayland org.gnome.GEdit</command>
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</para>
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<para>
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<command>$ flatpak override --filesystem=home org.mozilla.Firefox</command>
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</para>
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</refsect1>
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<refsect1>
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<title>See also</title>
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<para>
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<citerefentry><refentrytitle>flatpak</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>flatpak-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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