fs,security: Add sb_delete hook
The sb_delete security hook is called when shutting down a superblock, which may be useful to release kernel objects tied to the superblock's lifetime (e.g. inodes). This new hook is needed by Landlock to release (ephemerally) tagged struct inodes. This comes from the unprivileged nature of Landlock described in the next commit. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: James Morris <jmorris@namei.org> Signed-off-by:Mickaël Salaün <mic@linux.microsoft.com> Reviewed-by:
Jann Horn <jannh@google.com> Acked-by:
Serge Hallyn <serge@hallyn.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210422154123.13086-7-mic@digikod.net Signed-off-by:
James Morris <jamorris@linux.microsoft.com>
parent
cb2c7d1a
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