1FLATPAK OVERRIDE(1) flatpak override FLATPAK OVERRIDE(1)
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6 flatpak-override - Override application requirements
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9 flatpak override [OPTION...] [APP]
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12 Overrides the application specified runtime requirements. This can be
13 used to grant a sandboxed application more or less resources than it
14 requested.
15 By default the application gets access to the resources it requested
17 when it is started. But the user can override it on a particular
18 instance by specifying extra arguments to flatpak run, or every time by
19 using flatpak override.
20 If the application id is not specified then the overrides affect all
22 applications, but the per-application overrides can override the global
23 overrides.
24 Unless overridden with the --user or --installation options, this
26 command changes the default system-wide installation.
27
29 The following options are understood:
30 -h, --help
32 Show help options and exit.
33 --user
35 Update a per-user installation.
36 --system
38 Update the default system-wide installation.
39 --installation=NAME
41 Updates a system-wide installation specified by NAME among those
42 defined in /etc/flatpak/installations.d/. Using
43 --installation=default is equivalent to using --system.
44 --share=SUBSYSTEM
46 Share a subsystem with the host session. This overrides the Context
47 section from the application metadata. SUBSYSTEM must be one of:
48 network, ipc. This option can be used multiple times.
49 --unshare=SUBSYSTEM
51 Don't share a subsystem with the host session. This overrides the
52 Context section from the application metadata. SUBSYSTEM must be
53 one of: network, ipc. This option can be used multiple times.
54 --socket=SOCKET
56 Expose a well-known socket to the application. This overrides to
57 the Context section from the application metadata. SOCKET must be
58 one of: x11, wayland, fallback-x11, pulseaudio, system-bus,
59 session-bus, ssh-auth, pcsc, cups. This option can be used multiple
60 times.
61 --nosocket=SOCKET
63 Don't expose a well-known socket to the application. This overrides
64 to the Context section from the application metadata. SOCKET must
65 be one of: x11, wayland, fallback-x11, pulseaudio, system-bus,
66 session-bus, ssh-auth, pcsc, cups. This option can be used multiple
67 times.
68 --device=DEVICE
70 Expose a device to the application. This overrides to the Context
71 section from the application metadata. DEVICE must be one of: dri,
72 kvm, shm, all. This option can be used multiple times.
73 --nodevice=DEVICE
75 Don't expose a device to the application. This overrides to the
76 Context section from the application metadata. DEVICE must be one
77 of: dri, kvm, shm, all. This option can be used multiple times.
78 --allow=FEATURE
80 Allow access to a specific feature. This updates the [Context]
81 group in the metadata. FEATURE must be one of: devel, multiarch,
82 bluetooth, canbus, per-app-dev-shm. This option can be used
83 multiple times.
84 See flatpak-build-finish(1) for the meaning of the various
86 features.
87 --disallow=FEATURE
89 Disallow access to a specific feature. This updates the [Context]
90 group in the metadata. FEATURE must be one of: devel, multiarch,
91 bluetooth, canbus, per-app-dev-shm. This option can be used
92 multiple times.
93 --filesystem=FILESYSTEM
95 Allow the application access to a subset of the filesystem. This
96 overrides to the Context section from the application metadata.
97 FILESYSTEM can be one of: home, host, host-os, host-etc,
98 xdg-desktop, xdg-documents, xdg-download, xdg-music, xdg-pictures,
99 xdg-public-share, xdg-templates, xdg-videos, xdg-run, xdg-config,
100 xdg-cache, xdg-data, an absolute path, or a homedir-relative path
101 like ~/dir or paths relative to the xdg dirs, like
102 xdg-download/subdir. The optional :ro suffix indicates that the
103 location will be read-only. The optional :create suffix indicates
104 that the location will be read-write and created if it doesn't
105 exist. This option can be used multiple times. See the "[Context]
106 filesystems" list in flatpak-metadata(5) for details of the
107 meanings of these filesystems.
108 --nofilesystem=FILESYSTEM
110 Remove access to the specified subset of the filesystem from the
111 application. This overrides to the Context section from the
112 application metadata. FILESYSTEM can be one of: home, host,
113 host-os, host-etc, xdg-desktop, xdg-documents, xdg-download,
114 xdg-music, xdg-pictures, xdg-public-share, xdg-templates,
115 xdg-videos, an absolute path, or a homedir-relative path like
116 ~/dir. This option can be used multiple times.
117 --add-policy=SUBSYSTEM.KEY=VALUE
119 Add generic policy option. For example,
120 "--add-policy=subsystem.key=v1 --add-policy=subsystem.key=v2" would
121 map to this metadata:
122 [Policy subsystem]
124 key=v1;v2;
125 This option can be used multiple times.
128 --remove-policy=SUBSYSTEM.KEY=VALUE
130 Remove generic policy option. This option can be used multiple
131 times.
132 --env=VAR=VALUE
134 Set an environment variable in the application. This overrides to
135 the Context section from the application metadata. This option can
136 be used multiple times.
137 --unset-env=VAR
139 Unset an environment variable in the application. This overrides
140 the unset-environment entry in the [Context] group of the metadata,
141 and the [Environment] group. This option can be used multiple
142 times.
143 --env-fd=FD
145 Read environment variables from the file descriptor FD, and set
146 them as if via --env. This can be used to avoid environment
147 variables and their values becoming visible to other users.
148 Each environment variable is in the form VAR=VALUE followed by a
150 zero byte. This is the same format used by env -0 and
151 /proc/*/environ.
152 --own-name=NAME
154 Allow the application to own the well-known name NAME on the
155 session bus. This overrides to the Context section from the
156 application metadata. This option can be used multiple times.
157 --talk-name=NAME
159 Allow the application to talk to the well-known name NAME on the
160 session bus. This overrides to the Context section from the
161 application metadata. This option can be used multiple times.
162 --no-talk-name=NAME
164 Don't allow the application to talk to the well-known name NAME on
165 the session bus. This overrides to the Context section from the
166 application metadata. This option can be used multiple times.
167 --system-own-name=NAME
169 Allow the application to own the well known name NAME on the system
170 bus. If NAME ends with .*, it allows the application to own all
171 matching names. This overrides to the Context section from the
172 application metadata. This option can be used multiple times.
173 --system-talk-name=NAME
175 Allow the application to talk to the well known name NAME on the
176 system bus. If NAME ends with .*, it allows the application to talk
177 to all matching names. This overrides to the Context section from
178 the application metadata. This option can be used multiple times.
179 --system-no-talk-name=NAME
181 Don't allow the application to talk to the well known name NAME on
182 the system bus. If NAME ends with .*, it allows the application to
183 talk to all matching names. This overrides to the Context section
184 from the application metadata. This option can be used multiple
185 times.
186 --persist=FILENAME
188 If the application doesn't have access to the real homedir, make
189 the (homedir-relative) path FILENAME a bind mount to the
190 corresponding path in the per-application directory, allowing that
191 location to be used for persistent data. This overrides to the
192 Context section from the application metadata. This option can be
193 used multiple times.
194 --reset
196 Remove overrides. If an APP is given, remove the overrides for that
197 application, otherwise remove the global overrides.
198 --show
200 Shows overrides. If an APP is given, shows the overrides for that
201 application, otherwise shows the global overrides.
202 -v, --verbose
204 Print debug information during command processing.
205 --ostree-verbose
207 Print OSTree debug information during command processing.
208
210 $ flatpak override --nosocket=wayland org.gnome.gedit
211 $ flatpak override --filesystem=home org.mozilla.Firefox
213
215 flatpak(1), flatpak-run(1)
216flatpak FLATPAK OVERRIDE(1)