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| author | Simon McVittie <smcv@collabora.com> | 2021-02-16 18:51:23 +0000 |
|---|---|---|
| committer | Alexander Larsson <alexander.larsson@gmail.com> | 2021-04-16 08:57:20 +0200 |
| commit | cb47d83b7221de7f08a487dd47e69eec57f458e5 (patch) | |
| tree | 6e9eb082a683eb052edd2d1997d01f99a7ed23a1 /doc/flatpak-metadata.xml | |
| parent | 70a3e44fb59acd9067ca8148931eb3e23acb15b1 (diff) | |
| download | flatpak-cb47d83b7221de7f08a487dd47e69eec57f458e5.tar.gz | |
run: Add option to share /dev/shm between instances of an app-ID
Similar to /tmp, applications might well use /dev/shm as an IPC
rendezvous between instances, which wouldn't have worked without
--device=shm until now.
Because /dev/shm has specific characteristics (in particular it's
meant to always be a tmpfs), we offload the actual storage into a
subdirectory of the real /dev/shm. Because /dev/shm is a shared
directory between all uids, we have to be extra-careful how we
do this, which is why the test coverage here is important.
This is done on an opt-in basis because of its extra complexity.
Signed-off-by: Simon McVittie <smcv@collabora.com>
Diffstat (limited to 'doc/flatpak-metadata.xml')
| -rw-r--r-- | doc/flatpak-metadata.xml | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/flatpak-metadata.xml b/doc/flatpak-metadata.xml index f4cd84ce..2d853ade 100644 --- a/doc/flatpak-metadata.xml +++ b/doc/flatpak-metadata.xml @@ -478,6 +478,19 @@ Available since 1.0.3. </para></listitem></varlistentry> + <varlistentry><term><option>per-app-dev-shm</option></term> + <listitem><para> + Share a single instance of + <filename>/dev/shm</filename> between all + instances of this application run by the same + user ID, including sub-sandboxes. + If the application has the + <option>shm</option> device permission in its + <option>devices</option> list, then this + feature flag is ignored. + Available since 1.12.0. + </para></listitem></varlistentry> + </variablelist> A feature can be prefixed with <option>!</option> to indicate the absence of that feature, for example |