netdev - [RFC v3 01/22] landlock: Add Kconfig

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Message-Id: <20160914072415.26021-2-mic@digikod.net>
Date:   Wed, 14 Sep 2016 09:23:54 +0200
From:   Mickaël Salaün <mic@...ikod.net>
To:     linux-kernel@...r.kernel.org
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Arnd Bergmann <arnd@...db.de>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Daniel Mack <daniel@...que.org>,
        David Drysdale <drysdale@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        Elena Reshetova <elena.reshetova@...el.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        James Morris <james.l.morris@...cle.com>,
        Kees Cook <keescook@...omium.org>,
        Paul Moore <pmoore@...hat.com>,
        Sargun Dhillon <sargun@...gun.me>,
        "Serge E . Hallyn" <serge@...lyn.com>, Tejun Heo <tj@...nel.org>,
        Will Drewry <wad@...omium.org>,
        kernel-hardening@...ts.openwall.com, linux-api@...r.kernel.org,
        linux-security-module@...r.kernel.org, netdev@...r.kernel.org,
        cgroups@...r.kernel.org
Subject: [RFC v3 01/22] landlock: Add Kconfig

Initial Landlock Kconfig needed to split the Landlock eBPF and seccomp
parts to ease the review.

Changes from v2:
* add seccomp filter or cgroups (with eBPF programs attached support)
  dependencies

Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Cc: James Morris <james.l.morris@...cle.com>
Cc: Kees Cook <keescook@...omium.org>
Cc: Serge E. Hallyn <serge@...lyn.com>
---
 security/Kconfig          |  1 +
 security/landlock/Kconfig | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 security/landlock/Kconfig

diff --git a/security/Kconfig b/security/Kconfig
index 118f4549404e..c63194c561c5 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -164,6 +164,7 @@ source security/tomoyo/Kconfig
 source security/apparmor/Kconfig
 source security/loadpin/Kconfig
 source security/yama/Kconfig
+source security/landlock/Kconfig
 
 source security/integrity/Kconfig
 
diff --git a/security/landlock/Kconfig b/security/landlock/Kconfig
new file mode 100644
index 000000000000..dec64270b06d
--- /dev/null
+++ b/security/landlock/Kconfig
@@ -0,0 +1,23 @@
+config SECURITY_LANDLOCK
+	bool "Landlock sandbox support"
+	depends on SECURITY
+	depends on BPF_SYSCALL
+	depends on SECCOMP_FILTER || CGROUP_BPF
+	default y
+	help
+	  Landlock is a stacked LSM which allows any user to load a security
+	  policy to restrict their processes (i.e. create a sandbox). The
+	  policy is a list of stacked eBPF programs for some LSM hooks. Each
+	  program can do some access comparison to check if an access request
+	  is legitimate.
+
+	  You need to enable seccomp filter and/or cgroups (with eBPF programs
+	  attached support) to apply a security policy to either a process
+	  hierarchy (e.g. application with built-in sandboxing) or a group of
+	  processes (e.g. container sandboxing). It is recommended to enable
+	  both seccomp filter and cgroups.
+
+	  Further information about eBPF can be found in
+	  Documentation/networking/filter.txt
+
+	  If you are unsure how to answer this question, answer Y.
-- 
2.9.3