From patchwork Fri Apr 19 00:45:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Casey Schaufler X-Patchwork-Id: 10908355 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 DAB6517E0 for ; Fri, 19 Apr 2019 00:47:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BD5CA28B1F for ; Fri, 19 Apr 2019 00:47:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B191728B9D; Fri, 19 Apr 2019 00:47:20 +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=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,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 2982C28B91 for ; Fri, 19 Apr 2019 00:47:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726814AbfDSArT (ORCPT ); Thu, 18 Apr 2019 20:47:19 -0400 Received: from sonic317-33.consmr.mail.bf2.yahoo.com ([74.6.129.88]:39870 "EHLO sonic317-33.consmr.mail.bf2.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726810AbfDSArT (ORCPT ); Thu, 18 Apr 2019 20:47:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1555634838; bh=V6rKCyElicKZF/0fKwJbU08oHRiI1KUrOSjj+nGJXW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject; b=EAMx1pZIpJhKJ/L9D9fHZcIksCMY2HcZ/u2U3c1/3ft0VAeW4Ltrj3f80EwJSyrUMxdIMCWkOLxu1JQflJ7SpYw0Sl95pp9B7P0/hiwqs6S09teSxXL1ZZ6KK0N/RNIpVP6nP+ds96ChXqM/W7kCgHFrc8tSj67Ea/+giQJMNrLErI3Q5PmNW91D1NtgYR5OcoEYgxeoLcWnlvMYxZ047B+SAeAHJokELS1E9vjE/d1d6EOKb9S/7ohxG9XWIcdIFouWrVE+GitvkKclDAAGeUo+8J1L1KifHj+3Hu7VVewp35C7H9zNxDWyvR6M2Ew2Nl7DO+ka1+ppveNhV5aZEg== X-YMail-OSG: TDBFR7UVM1nqilPpYCa_dqZHln4.beY4xmDY2TNp2N8U.lj5VpmEg3rzvgnx7RU 6IfCh5VXFN2hWANwLm9u2BNLB2gA2Xoq_.JZwpXWzUfyu5vp5mgbwv4gXyuuq_eaw.gdLlbDbux2 fFVboRIxNAoKtUZXxrM2935z_Y6VRNV9UI2aDLBk3hry0Adwqw2msiYJ2ZY4dN8mdcllxet_g7EG xZIVmVZMW5iOiLCRmC5QImQfRuC0RqFi1oxh6rhB4SEftBt1p985dvnOO.WtnMeSju5oHn6CHcHw XLwukqo7UEtjZ9aXWCJFc0tekZa8cb74JYO91CF1xUv4ZjbiYxujZSWxjeyxpCki973g_RcdagOC hFv6pJJX15gaz2cbrTe4p6AT1unQ3I2vKNA0IYOupGLKnD6kkdUsv2Qml7puFV0LISanHfmGcnCr z3cB6KUpIaR9IhOHPzGP6_iOou97GA1FA3LhoGN2r1ooUhJyd0bVkIvFhWorRCwBSh3RaE9Z0BrV IHzLfr3XJb2ZuLqGVTLbJFwKmv0WuEcWgAUJmRcMZMf29BwMqLEbBn4Az6NEz_iVbeWSBen.tWeO iJUUC53FD4StldN5FtgGeFWELjGN5TkYeYGH05_muQi3gXhV8l.WZzbG28frcGQQjNnWblHnBp.0 Qi1ml94ogzmnlZjOLxGZ92Jizbw5D0zCVBuYXuSdy072HnZVg65Mw6J4hMZ9FXQi1GPAsenqi25Z nGmYq_kf1J9_sYhMjLxfn6GRbWquXFQN4Y3.ctZPqR4IN2fewwMGZIZ0mn9wF1xHRodvUeUI1tZq jUlG_bqZcrNRLxp4Mfa_KGMqW1rBCC10R6.IOKcvVNhA3LIaT4Jz6KrMounrKyVA3PKi_vsztuLS Uwtv7H4q0JDfc6mEPeBZP.1orCeEJcx0e0Q0wDPPKPs3GH8C4GOLl0zsotGwT2TmRYKzHjKclcn8 j2NkTl7nXqYR0z8VPbk9k450MiQxzejRkbNDHJEAYWJPsrJEgOuqvc5SXyBPY_ArxtaecKzZrXnf pWPwJ2LfFoDCvb5VTuAqANxlh.5RbPI56uKQo8M1eUStRxQJxpRgAEpqTKzfusO7lW0.JMOBMnRs 2WUi9nYFxh7d4GZDTdU0btVpzFkBzYxxm8lr3FbZqs.9AaIERm3TF58J3YXvgzPp.35JTbUsU0hO vm0peOWonNigD0Q-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic317.consmr.mail.bf2.yahoo.com with HTTP; Fri, 19 Apr 2019 00:47:18 +0000 Received: from c-67-169-65-224.hsd1.ca.comcast.net (EHLO localhost.localdomain) ([67.169.65.224]) by smtp404.mail.bf1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 2b98cff5dd7fb51e7c7719cd11eecc1a; Fri, 19 Apr 2019 00:47:14 +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 24/90] Audit: Convert target_sid to an lsm_export structure Date: Thu, 18 Apr 2019 17:45:11 -0700 Message-Id: <20190419004617.64627-25-casey@schaufler-ca.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20190419004617.64627-1-casey@schaufler-ca.com> References: <20190419004617.64627-1-casey@schaufler-ca.com> Sender: selinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Convert target_sid to be an lsm_export structure instead of a u32 secid. Clean out the associated scaffolding. Change the name to target_lsm to be descriptive. Signed-off-by: Casey Schaufler --- kernel/audit.h | 3 ++- kernel/auditsc.c | 30 ++++++++++++------------------ 2 files changed, 14 insertions(+), 19 deletions(-) diff --git a/kernel/audit.h b/kernel/audit.h index 64498850c52b..e2e6fa911f9c 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -147,7 +148,7 @@ struct audit_context { kuid_t target_auid; kuid_t target_uid; unsigned int target_sessionid; - u32 target_sid; + struct lsm_export target_lsm; char target_comm[TASK_COMM_LEN]; struct audit_tree_refs *trees, *first_trees; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 41f540037a93..75d181029d40 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -112,7 +112,7 @@ struct audit_aux_data_pids { kuid_t target_auid[AUDIT_AUX_PIDS]; kuid_t target_uid[AUDIT_AUX_PIDS]; unsigned int target_sessionid[AUDIT_AUX_PIDS]; - u32 target_sid[AUDIT_AUX_PIDS]; + struct lsm_export target_lsm[AUDIT_AUX_PIDS]; char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN]; int pid_count; }; @@ -937,14 +937,14 @@ static inline void audit_free_context(struct audit_context *context) } static int audit_log_pid_context(struct audit_context *context, pid_t pid, - kuid_t auid, kuid_t uid, unsigned int sessionid, - u32 sid, char *comm) + kuid_t auid, kuid_t uid, + unsigned int sessionid, + struct lsm_export *l, char *comm) { struct audit_buffer *ab; char *ctx = NULL; u32 len; int rc = 0; - struct lsm_export le; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) @@ -953,9 +953,8 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid, audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), sessionid); - if (sid) { - lsm_export_to_all(&le, sid); - if (security_secid_to_secctx(&le, &ctx, &len)) { + if (lsm_export_any(l)) { + if (security_secid_to_secctx(l, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; } else { @@ -1525,7 +1524,7 @@ static void audit_log_exit(void) axs->target_auid[i], axs->target_uid[i], axs->target_sessionid[i], - axs->target_sid[i], + &axs->target_lsm[i], axs->target_comm[i])) call_panic = 1; } @@ -1534,7 +1533,7 @@ static void audit_log_exit(void) audit_log_pid_context(context, context->target_pid, context->target_auid, context->target_uid, context->target_sessionid, - context->target_sid, context->target_comm)) + &context->target_lsm, context->target_comm)) call_panic = 1; if (context->pwd.dentry && context->pwd.mnt) { @@ -1711,7 +1710,7 @@ void __audit_syscall_exit(int success, long return_code) context->aux = NULL; context->aux_pids = NULL; context->target_pid = 0; - context->target_sid = 0; + lsm_export_init(&context->target_lsm); context->sockaddr_len = 0; context->type = 0; context->fds[0] = -1; @@ -2363,14 +2362,12 @@ int __audit_sockaddr(int len, void *a) void __audit_ptrace(struct task_struct *t) { struct audit_context *context = audit_context(); - struct lsm_export le; context->target_pid = task_tgid_nr(t); context->target_auid = audit_get_loginuid(t); context->target_uid = task_uid(t); context->target_sessionid = audit_get_sessionid(t); - security_task_getsecid(t, &le); - lsm_export_secid(&le, &context->target_sid); + security_task_getsecid(t, &context->target_lsm); memcpy(context->target_comm, t->comm, TASK_COMM_LEN); } @@ -2387,7 +2384,6 @@ int audit_signal_info(int sig, struct task_struct *t) struct audit_aux_data_pids *axp; struct audit_context *ctx = audit_context(); kuid_t uid = current_uid(), auid, t_uid = task_uid(t); - struct lsm_export le; if (auditd_test_task(t) && (sig == SIGTERM || sig == SIGHUP || @@ -2411,8 +2407,7 @@ int audit_signal_info(int sig, struct task_struct *t) ctx->target_auid = audit_get_loginuid(t); ctx->target_uid = t_uid; ctx->target_sessionid = audit_get_sessionid(t); - security_task_getsecid(t, &le); - lsm_export_secid(&le, &ctx->target_sid); + security_task_getsecid(t, &ctx->target_lsm); memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); return 0; } @@ -2433,8 +2428,7 @@ int audit_signal_info(int sig, struct task_struct *t) axp->target_auid[axp->pid_count] = audit_get_loginuid(t); axp->target_uid[axp->pid_count] = t_uid; axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); - security_task_getsecid(t, &le); - lsm_export_secid(&le, &axp->target_sid[axp->pid_count]); + security_task_getsecid(t, &axp->target_lsm[axp->pid_count]); memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); axp->pid_count++;