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f33fac310c
This means use x11 if no alternative is present, and should be used for applications that support both X11 and wayland, but want to be sandboxed when running under a wayland compositor (but still want to run under an X server). Closes: #1416 Approved by: alexlarsson
363 lines
14 KiB
XML
363 lines
14 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="opt">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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<para>
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If the application id is not specified then the overrides affect all applications,
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but the per-application overrides can override the global overrides.
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</para>
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<para>
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Unless overridden with the --user or --installation options, this command
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changes the default system-wide installation.
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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>--user</option></term>
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<listitem><para>
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Update a per-user installation.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--system</option></term>
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<listitem><para>
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Update the default system-wide installation.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--installation=NAME</option></term>
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<listitem><para>
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Updates a system-wide installation specified by <arg choice="plain">NAME</arg>
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among those defined in <filename>/etc/flatpak/installations.d/</filename>.
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Using <arg choice="plain">--installation=default</arg> is equivalent to using
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<arg choice="plain">--system</arg>.
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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, fallback-x11, 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, fallback-x11, 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, kvm, 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, kvm, 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>--allow=FEATURE</option></term>
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<listitem><para>
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Allow access to a specific feature. This updates
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the [Context] group in the metadata.
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FEATURE must be one of: devel, multiarch.
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This option can be used multiple times.
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</para><para>
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The <code>devel</code> feature allows the application to
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access certain syscalls such as <code>ptrace()</code>, and
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<code>perf_event_open()</code>.
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</para><para>
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The <code>multiarch</code> feature allows the application to
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execute programs compiled for an ABI other than the one supported
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natively by the system. For example, for the <code>x86_64</code>
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architecture, 32-bit <code>x86</code> binaries will be allowed as
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well.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--disallow=FEATURE</option></term>
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<listitem><para>
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Disallow access to a specific feature. This updates
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the [Context] group in the metadata.
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FEATURE must be one of: devel, multiarch.
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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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xdg-config, xdg-cache, xdg-data,
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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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The optional :ro suffix indicates that the location will be read-only.
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The optional :create suffix indicates that the location will be read-write and created if it doesn't exist.
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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>--nofilesystem=FILESYSTEM</option></term>
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<listitem><para>
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Remove access to the specified subset of the filesystem from
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the application. This overrides to the Context section from the
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application metadata.
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FILESYSTEM 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,
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an absolute path, or a homedir-relative path like ~/dir.
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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>--add-policy=SUBSYSTEM.KEY=VALUE</option></term>
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<listitem><para>
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Add generic policy option. For example, "--add-policy=subsystem.key=v1 --add-policy=subsystem.key=v2" would map to this metadata:
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<programlisting>
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[Policy subsystem]
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key=v1;v2;
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</programlisting>
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</para></listitem>
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<listitem><para>
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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>--remove-policy=SUBSYSTEM.KEY=VALUE</option></term>
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<listitem><para>
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Remove generic policy option. 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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<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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