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35ca423992
Add tests for the hostfs filesystems to make sure it has a consistent inode management, which is required for Landlock's file hierarchy identification. This adds 5 new tests for layout3_fs with the hostfs variant. Add hostfs to the new (architecture-specific) config.um file. The hostfs filesystem, only available for an User-Mode Linux kernel, is special because we cannot explicitly mount it. The layout3_fs.hostfs variant tests are skipped if the current test directory is not backed by this filesystem. The layout3_fs.hostfs.tag_inode_dir_child and layout3_fs.hostfs.tag_inode_file tests pass thanks to a previous commit fixing hostfs inode management. Without this fix, the deny-by-default policy would apply and all access requests would be denied. Link: https://lore.kernel.org/r/20230612191430.339153-7-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net>
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 Restructured Text 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.