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From: Jann Horn <jannh@google.com>
To: "Mickaël Salaün" <mic@digikod.net>
Cc: "James Morris" <jmorris@namei.org>,
	"Serge E . Hallyn" <serge@hallyn.com>,
	"Al Viro" <viro@zeniv.linux.org.uk>,
	"Andy Lutomirski" <luto@amacapital.net>,
	"Anton Ivanov" <anton.ivanov@cambridgegreys.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Casey Schaufler" <casey@schaufler-ca.com>,
	"Jeff Dike" <jdike@addtoit.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Kees Cook" <keescook@chromium.org>,
	"Michael Kerrisk" <mtk.manpages@gmail.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Shuah Khan" <shuah@kernel.org>,
	"Vincent Dagonneau" <vincent.dagonneau@ssi.gouv.fr>,
	"Kernel Hardening" <kernel-hardening@lists.openwall.com>,
	"Linux API" <linux-api@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	"kernel list" <linux-kernel@vger.kernel.org>,
	"open list:KERNEL SELFTEST FRAMEWORK"
	<linux-kselftest@vger.kernel.org>,
	linux-security-module <linux-security-module@vger.kernel.org>,
	"the arch/x86 maintainers" <x86@kernel.org>,
	"Mickaël Salaün" <mic@linux.microsoft.com>
Subject: Re: [PATCH v26 02/12] landlock: Add ruleset and domain management
Date: Thu, 14 Jan 2021 04:21:44 +0100
Message-ID: <CAG48ez3Kf-jR2jhoyU29oad3-1R-BdO73hpfPeXwaaPzPK8Y0A@mail.gmail.com> (raw)
In-Reply-To: <20201209192839.1396820-3-mic@digikod.net>

On Wed, Dec 9, 2020 at 8:28 PM Mickaël Salaün <mic@digikod.net> 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@namei.org>
> Cc: Jann Horn <jannh@google.com>
> Cc: Kees Cook <keescook@chromium.org>
> Cc: Serge E. Hallyn <serge@hallyn.com>
> Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>

Yeah, the layer stack stuff in this version looks good to me. :)

Reviewed-by: Jann Horn <jannh@google.com>

  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 19:28 [PATCH v26 00/12] Landlock LSM Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 01/12] landlock: Add object management Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 02/12] landlock: Add ruleset and domain management Mickaël Salaün
2021-01-14  3:21   ` Jann Horn [this message]
2020-12-09 19:28 ` [PATCH v26 03/12] landlock: Set up the security framework and manage credentials Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 04/12] landlock: Add ptrace restrictions Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 05/12] LSM: Infrastructure management of the superblock Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 06/12] fs,security: Add sb_delete hook Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 07/12] landlock: Support filesystem access-control Mickaël Salaün
2021-01-14  3:22   ` Jann Horn
2021-01-14 18:54     ` Mickaël Salaün
2021-01-14 22:43       ` Jann Horn
2021-01-15  9:10         ` Mickaël Salaün
2021-01-15 18:31           ` Jann Horn
2021-01-16 17:16             ` Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 08/12] landlock: Add syscall implementations Mickaël Salaün
2020-12-10 10:38   ` Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 09/12] arch: Wire up Landlock syscalls Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 10/12] selftests/landlock: Add user space tests Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 11/12] samples/landlock: Add a sandbox manager example Mickaël Salaün
2021-01-14  3:21   ` Jann Horn
2021-01-14 18:59     ` Mickaël Salaün
2020-12-09 19:28 ` [PATCH v26 12/12] landlock: Add user and kernel documentation Mickaël Salaün
2021-01-14  3:22 ` [PATCH v26 00/12] Landlock LSM Jann Horn
2021-01-14 19:03   ` Mickaël Salaün

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