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Luca Boccassi 579941899d ipe: return -ESTALE instead of -EINVAL on update when new policy has a lower version
When loading policies in userspace we want a recognizable error when an
update attempts to use an old policy, as that is an error that needs
to be treated differently from an invalid policy. Use -ESTALE as it is
clear enough for an update mechanism.

Signed-off-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Fan Wu <wufan@kernel.org>
History 2024-10-17 11:37:13 -07:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.