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ref-manual: add overlayfs class variables

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The overlayfs class was added in the honister release.

(From yocto-docs rev: cff6b5a167d8f7d99a351c7989bc86af5e553552)

Signed-off-by: Paul Eggleton <paul.eggleton@microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2022-10-10 14:50:21 +13:00
committed by Richard Purdie
parent 9e56bf9d8e
commit 01372ac01c
1 changed files with 24 additions and 0 deletions
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documentation/ref-manual/variables.rst
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@@ -5231,6 +5231,30 @@ system and gives an overview of their function and contents.
information, see the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>`
class documentation. The default value is "1".
:term:`OVERLAYFS_MOUNT_POINT`
When inheriting the :ref:`overlayfs <ref-classes-overlayfs>` class,
specifies mount point(s) to be used. For example::
OVERLAYFS_MOUNT_POINT[data] = "/data"
The assumes you have a ``data.mount`` systemd unit defined elsewhere
in your BSP (e.g. in ``systemd-machine-units`` recipe) and it is
installed into the image. For more information see
:ref:`overlayfs <ref-classes-overlayfs>`.
.. note::
Although the :ref:`overlayfs <ref-classes-overlayfs>` class is
inherited by individual recipes, :term:`OVERLAYFS_MOUNT_POINT`
should be set in your machine configuration.
:term:`OVERLAYFS_WRITABLE_PATHS`
When inheriting the :ref:`overlayfs <ref-classes-overlayfs>` class,
specifies writable paths used at runtime for the recipe. For
example::
OVERLAYFS_WRITABLE_PATHS[data] = "/usr/share/my-custom-application"
:term:`OVERRIDES`
A colon-separated list of overrides that currently apply. Overrides
are a BitBake mechanism that allows variables to be selectively