From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 11 Nov 2025 11:49:30 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vIlwI-0007X2-1z for lore@lore.pengutronix.de; Tue, 11 Nov 2025 11:49:30 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vIlwI-0004L1-0p for lore@pengutronix.de; Tue, 11 Nov 2025 11:49:30 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:References:To:From:Subject:MIME-Version:Date: Message-ID:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=w8WQdZGnpV/j5KaNMi9tnaEAIvnsFj/L2BStcwxXXqQ=; b=byzhNt7vTxm6Q42pNfALzFbw1f /17o+52qXfOKwkv3KTS/qncVPr8//WlSMp8mn7hqVCflwBJzbx04oLodgkZl+3VOxLHFeEoljAaeB BNazK6pjzFepGBaIhwgtFeStb5FMnlbXO2os0AdoUjS+3a9nbzugpSP7loDyLRehtJdRzXhtvMd9Q BE1OWoEFSyz5cYnCvKG8I7If67EjYzuqOhy/TJtG6vVw3FOHMVujge1tBqubp7GLffgAJNbGAlabq m41VqyGFEMnuHpQux6+XG1pDQFTt6yUG1LQIvtxiXwPjdDURNS4kiUgVOsBYlLUm6hpzMqdO6R6yw mmrg43qw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIlvk-00000006zbL-0t2T; Tue, 11 Nov 2025 10:48:56 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIlvh-00000006zaY-21JV for barebox@lists.infradead.org; Tue, 11 Nov 2025 10:48:54 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=[127.0.0.1]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1vIlvf-0004Ct-SA; Tue, 11 Nov 2025 11:48:51 +0100 Message-ID: <34937029-c9f6-4343-b335-d1fc69f4e0a8@pengutronix.de> Date: Tue, 11 Nov 2025 11:48:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Ahmad Fatoum To: Fabian Pflug , barebox@lists.infradead.org References: <20251110214648.2738052-1-f.pflug@pengutronix.de> <98968c9c-4edf-46d3-a317-01fb79b925f4@pengutronix.de> Content-Language: en-US, de-DE, de-BE In-Reply-To: <98968c9c-4edf-46d3-a317-01fb79b925f4@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251111_024853_525588_CD22093C X-CRM114-Status: GOOD ( 22.78 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] security: policy: allow querying the active policy X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Hi, On 11/11/25 9:59 AM, Ahmad Fatoum wrote: > Hello Fabian, > > On 11/10/25 10:46 PM, Fabian Pflug wrote: >> Sometimes it is needed from board code to not to check what is allowed, >> but what is the currently activated security policy to do some stuff. > > As you know, security policies were a recent addition in the last > month's release and we are still gathering experience with how to best > use it. > > May I ask what you are using the name for? I envisioned the name to be > just a descriptive string and that boards would define their own > SCONFIG_ symbols if they need to control something. I talked with Fabian off-list about this. I prefer not to add an API as not to encourage comparisons against the name of the security policy for security-related decisions. If the name is needed (in this case to avoid some security unrelated setup when in lockdown), ${security.policy} or the active_policy variable can be used instead. Cheers, Ahmad > > > Thanks, > Ahmad > >> >> Signed-off-by: Fabian Pflug >> --- >> include/security/policy.h | 1 + >> security/policy.c | 8 ++++++++ >> 2 files changed, 9 insertions(+) >> >> diff --git a/include/security/policy.h b/include/security/policy.h >> index c41220ef3b..3eedf6e5ac 100644 >> --- a/include/security/policy.h >> +++ b/include/security/policy.h >> @@ -32,6 +32,7 @@ const struct security_policy *security_policy_get(const char *name); >> int security_policy_activate(const struct security_policy *policy); >> int security_policy_select(const char *name); >> void security_policy_list(void); >> +bool security_policy_is_active(const char *name); >> >> #ifdef CONFIG_SECURITY_POLICY >> int __security_policy_register(const struct security_policy policy[]); >> diff --git a/security/policy.c b/security/policy.c >> index 85333d9e6f..abb956014d 100644 >> --- a/security/policy.c >> +++ b/security/policy.c >> @@ -225,6 +225,14 @@ static int security_policy_get_name(struct param_d *param, void *priv) >> return 0; >> } >> >> +bool security_policy_is_active(const char *name) >> +{ >> + if (!active_policy) >> + return false; >> + >> + return !strcmp(name, active_policy->name); >> +} >> + >> static int security_init(void) >> { >> register_device(&security_device); > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |