On Tue, Mar 16, 2021 at 9:43 PM Mickaël Salaün <mic@xxxxxxxxxxx> wrote: > A Landlock ruleset is mainly a red-black tree with Landlock rules as > nodes. This enables quick update and lookup to match a requested > access, e.g. to a file. A ruleset is usable through a dedicated file > descriptor (cf. following commit implementing syscalls) which enables a > process to create and populate a ruleset with new rules. > > A domain is a ruleset tied to a set of processes. This group of rules > defines the security policy enforced on these processes and their future > children. A domain can transition to a new domain which is the > intersection of all its constraints and those of a ruleset provided by > the current process. This modification only impact the current process. > This means that a process can only gain more constraints (i.e. lose > accesses) over time. > > Cc: James Morris <jmorris@xxxxxxxxx> > Cc: Jann Horn <jannh@xxxxxxxxxx> > Cc: Kees Cook <keescook@xxxxxxxxxxxx> > Signed-off-by: Mickaël Salaün <mic@xxxxxxxxxxxxxxxxxxx> > Acked-by: Serge Hallyn <serge@xxxxxxxxxx> > Link: https://lore.kernel.org/r/20210316204252.427806-3-mic@xxxxxxxxxxx Reviewed-by: Jann Horn <jannh@xxxxxxxxxx>
