From patchwork Tue Apr 9 21:39:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Casey Schaufler X-Patchwork-Id: 10892607 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EA9A013B5 for ; Tue, 9 Apr 2019 21:41:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DD33A285C6 for ; Tue, 9 Apr 2019 21:41:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D1A2028862; Tue, 9 Apr 2019 21:41:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FA582886B for ; Tue, 9 Apr 2019 21:41:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726813AbfDIVlR (ORCPT ); Tue, 9 Apr 2019 17:41:17 -0400 Received: from sonic317-39.consmr.mail.ne1.yahoo.com ([66.163.184.50]:33459 "EHLO sonic317-39.consmr.mail.ne1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726962AbfDIVlQ (ORCPT ); Tue, 9 Apr 2019 17:41:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1554846074; bh=0HvNAEM5ldRD+uctL0wTIJl/wIYr3ZZyu0EQxH10SGs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject; b=RazMJFvAFzgp59t15OZLvw54cOfj/nN0G5I/B4iqGf77kEWOYfTI828S32wzMRSuEPHi4F7MlQzxopDXHuFnnE2d+wxJhGpjQ02QVYQHaHvbZPX5508m7qis4pMfBkQ+B7bNT+rSq1A5ldvJMD1d0FdSTCqILeHSAGjnlJZlXNPr+U7FXALouOanCBmXbe7J2CkGXDukdkKdhzxRQJVHz2VvSCtB5RnCyQPoSkmTWBAnro4Q6V6qqa9SMNyuUYTsjVEKpS1K1xfjXzFYAhesFlpgnacHXdFY5x9dEh0SqT7psXv8BAVgO1TslKMTy9sBS/nd8SDPpUIS/LG7lEdFIQ== X-YMail-OSG: TLBxVA0VM1ky8EeBddCh0AnGIEg_EPU0sHYiQY41DaFZXrHxYyDPzJ6BNPgZZY2 2e7UUGxLUK7dFqDOzUvalL2M.Hslnk3rRmrtlRj_Ed1aUzavIvnZtfR0aROFH3IgAfvKSu1A.yiE GrXnay7Y8QGBOzjvoEU01rTlBYbtximMt2k_4k8RYfRr0pEFXtz0F0c47I2QiasvqcH3yTWsMkGd dHp5NAIAe6K3XuJAl307K8X1u5Hdggaf4uUagHs5HvFYjRMk3zt3DNHmBFC6MPU68L3mOoyhan1D m0Lh65KM_DnlkU35SRhiNLBurfuCjdKoYNXx51duMw.gjl1m7vqH0N5Xs7VK7gDSKjXuD3Og.Jkk tXfQpo8YKKI4YVHQKuPS9VDDQT35AWk7H5K7AJgjvaTqujNvrGPBjBiTINr.KUh.cczWsQpoqx4a wQZGHpM3T14tblZd35N0IMJVoiFXhoyPcsarPnUICuiJ6vn6YSYR6D.GFvR8DrWLgZCV0KHRbFao PJffQFIAf7jBqJtIkjF.pBIg_JQduDIbDtP9RnGrdTOuCI29lBCFdT_eJJ8dzoVKheGcIBh.os_M ry9yMBznGe4cb9CR0qKMZabcZUFyLEXiQePg95BAxDIcEd8nEDQKhrYiPd9w8EoF1DPpQJbMI.C5 h.RFytQLzd8XDoKIPc6QtB58eWYVYFbHhSrI6BoGBCs6N2Vw70m4SuJzfRLQRnNqFXM28t2x2ATR XCbIyuRIdHViooBgjkdRtuSbeZfNvlThdNqJlzlKUqstqa35dZdCFJHD4SpGIDcKtUdoxN9wRA6U 1TnrbR8U3bwVU8L_b7aIT1S5IbYDDlaSv7F5dw6KcYDzXHpI9SxAeBgQQ9SfpQhTvfF85CIESsCL qkT2vtrJoLjkd3zWWQSNFa0H_udjKPqyGwQoAsXp1WrJG3jw.n08LdnMhEA3Anv2bAXWyx1ctZxt 2JTkSF05BvtEkpWnNInCtpmTsEbmgsZ0DNnVSFReCTqmi0tnFoqzmReL_6jeTxbAGlj0LohF6B21 kwDbOLtnPiyX2dATAxe9sdHfyVn_LjiCFavLCzBy769tpd9ibQgaxy.bouBcse.TjRhgRhR.sJiJ Aizg120mpI1DdxwXvIRcB7_g.sBvIpKbj5tnFVMfYivm.Vag2N6TUJt0hoSTezw-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic317.consmr.mail.ne1.yahoo.com with HTTP; Tue, 9 Apr 2019 21:41:14 +0000 Received: from c-67-169-65-224.hsd1.ca.comcast.net (EHLO localhost.localdomain) ([67.169.65.224]) by smtp427.mail.ne1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 909a163ce0f03793fff6be9a79785446; Tue, 09 Apr 2019 21:41:10 +0000 (UTC) From: Casey Schaufler To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: casey@schaufler-ca.com Subject: [PATCH 47/59] LSM: Use lsm_context in release_secctx hooks Date: Tue, 9 Apr 2019 14:39:34 -0700 Message-Id: <20190409213946.1667-48-casey@schaufler-ca.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20190409213946.1667-1-casey@schaufler-ca.com> References: <20190409213946.1667-1-casey@schaufler-ca.com> Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP Convert SELinux, Smack and AppAror to use the lsm_context structure instead of a context/secid pair. There is some scaffolding involved that will be removed when the related data is updated. Signed-off-by: Casey Schaufler --- include/linux/lsm_hooks.h | 3 +-- security/apparmor/include/secid.h | 2 +- security/apparmor/secid.c | 4 ++-- security/security.c | 7 +++++-- security/selinux/hooks.c | 4 ++-- security/smack/smack_lsm.c | 4 ++-- 6 files changed, 13 insertions(+), 11 deletions(-) diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index f60ec98596c8..11bfa0a4f188 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -1332,7 +1332,6 @@ * @release_secctx: * Release the security context. * @secdata contains the security context. - * @seclen contains the length of the security context. * * Security hooks for Audit * @@ -1671,7 +1670,7 @@ union security_list_options { int (*secid_to_secctx)(struct lsm_export *l, struct lsm_context *cp); int (*secctx_to_secid)(const struct lsm_context *cp, struct lsm_export *l); - void (*release_secctx)(char *secdata, u32 seclen); + void (*release_secctx)(struct lsm_context *cp); void (*inode_invalidate_secctx)(struct inode *inode); int (*inode_notifysecctx)(struct inode *inode, struct lsm_context *cp); diff --git a/security/apparmor/include/secid.h b/security/apparmor/include/secid.h index acfcf99bff0e..a780e56d4f5b 100644 --- a/security/apparmor/include/secid.h +++ b/security/apparmor/include/secid.h @@ -29,7 +29,7 @@ struct aa_label *aa_secid_to_label(struct lsm_export *l); int apparmor_secid_to_secctx(struct lsm_export *l, struct lsm_context *cp); int apparmor_secctx_to_secid(const struct lsm_context *cp, struct lsm_export *l); -void apparmor_release_secctx(char *secdata, u32 seclen); +void apparmor_release_secctx(struct lsm_context *cp); int aa_alloc_secid(struct aa_label *label, gfp_t gfp); diff --git a/security/apparmor/secid.c b/security/apparmor/secid.c index 35df38592b6e..46c8b9a67ac7 100644 --- a/security/apparmor/secid.c +++ b/security/apparmor/secid.c @@ -123,9 +123,9 @@ int apparmor_secctx_to_secid(const struct lsm_context *cp, struct lsm_export *l) return 0; } -void apparmor_release_secctx(char *secdata, u32 seclen) +void apparmor_release_secctx(struct lsm_context *cp) { - kfree(secdata); + kfree(cp->context); } /** diff --git a/security/security.c b/security/security.c index f51ea4a134ae..149cceb5e366 100644 --- a/security/security.c +++ b/security/security.c @@ -2004,7 +2004,6 @@ EXPORT_SYMBOL(security_secid_to_secctx); int security_secctx_to_secid(struct lsm_context *cp, struct lsm_export *l) { - lsm_export_init(l); return call_one_int_hook(secctx_to_secid, 0, cp, l); } @@ -2012,7 +2011,11 @@ EXPORT_SYMBOL(security_secctx_to_secid); void security_release_secctx(char *secdata, u32 seclen) { - call_one_void_hook(release_secctx, secdata, seclen); + struct lsm_context lc; + + lc.context = secdata; + lc.len = seclen; + call_one_void_hook(release_secctx, &lc); } EXPORT_SYMBOL(security_release_secctx); diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index fe09905d013c..332296f69f76 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -6322,9 +6322,9 @@ static int selinux_secctx_to_secid(const struct lsm_context *cp, return rc; } -static void selinux_release_secctx(char *secdata, u32 seclen) +static void selinux_release_secctx(struct lsm_context *cp) { - kfree(secdata); + kfree(cp->context); } static void selinux_inode_invalidate_secctx(struct inode *inode) diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 3d24503029e5..cf27905ccaa5 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -4468,9 +4468,9 @@ static int smack_secctx_to_secid(const struct lsm_context *cp, } /* - * There smack_release_secctx hook does nothing + * The smack_release_secctx hook does nothing */ -static void smack_release_secctx(char *secdata, u32 seclen) +static void smack_release_secctx(struct lsm_context *cp) { }