From patchwork Wed Jul 1 06:49:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Reber X-Patchwork-Id: 11635413 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7AF4292A for ; Wed, 1 Jul 2020 06:49:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 637432074D for ; Wed, 1 Jul 2020 06:49:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VEVIKlDx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727945AbgGAGtj (ORCPT ); Wed, 1 Jul 2020 02:49:39 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:34873 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727932AbgGAGtj (ORCPT ); Wed, 1 Jul 2020 02:49:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593586178; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=hToiU5LeJAAlC9l0X3eoMf5GmV669rRbGsOZZ5vcImA=; b=VEVIKlDxys8SCCyFjan3k4mJ0EUszUZgFz4Y9BvQPOtQucULbyeG9gWUQVXxQ/1mvfHyqr L/5FcHB1hemESjY7tY0fs3+w+ohRk+E851WBb3LW+DAHUsAS53ATOjIMFvKZH+ey0HYnGq /frIo3z4RKZNlrHrbYREc5tjD4mdGrU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-67-E6P5FSFWO06ES6NUoi0Giw-1; Wed, 01 Jul 2020 02:49:34 -0400 X-MC-Unique: E6P5FSFWO06ES6NUoi0Giw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4ADFD80183C; Wed, 1 Jul 2020 06:49:31 +0000 (UTC) Received: from dcbz.redhat.com (ovpn-113-12.ams2.redhat.com [10.36.113.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1DB982B4AD; Wed, 1 Jul 2020 06:49:20 +0000 (UTC) From: Adrian Reber To: Christian Brauner , Eric Biederman , Pavel Emelyanov , Oleg Nesterov , Dmitry Safonov <0x7f454c46@gmail.com>, Andrei Vagin , Nicolas Viennot , =?utf-8?b?TWljaGHFgiBDxYJh?= =?utf-8?b?cGnFhHNraQ==?= , Kamil Yurtsever , Dirk Petersen , Christine Flood , Casey Schaufler Cc: Mike Rapoport , Radostin Stoyanov , Adrian Reber , Cyrill Gorcunov , Serge Hallyn , Stephen Smalley , Sargun Dhillon , Arnd Bergmann , linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, selinux@vger.kernel.org, Eric Paris , Jann Horn , linux-fsdevel@vger.kernel.org Subject: [PATCH v4 0/3] capabilities: Introduce CAP_CHECKPOINT_RESTORE Date: Wed, 1 Jul 2020 08:49:03 +0200 Message-Id: <20200701064906.323185-1-areber@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: This is v4 of the 'Introduce CAP_CHECKPOINT_RESTORE' patchset. There is only one change from v3 to address Jann's comment on patch 3/3 (That is not necessarily true in the presence of LSMs like SELinux: You'd have to be able to FILE__EXECUTE_NO_TRANS the target executable according to the system's security policy.) Nicolas updated the last patch (3/3). The first two patches are unchanged from v3. Adrian Reber (2): capabilities: Introduce CAP_CHECKPOINT_RESTORE selftests: add clone3() CAP_CHECKPOINT_RESTORE test Nicolas Viennot (1): prctl: Allow ptrace capable processes to change /proc/self/exe fs/proc/base.c | 8 +- include/linux/capability.h | 6 + include/linux/lsm_hook_defs.h | 1 + include/linux/security.h | 6 + include/uapi/linux/capability.h | 9 +- kernel/pid.c | 2 +- kernel/pid_namespace.c | 2 +- kernel/sys.c | 12 +- security/commoncap.c | 26 +++ security/security.c | 5 + security/selinux/hooks.c | 14 ++ security/selinux/include/classmap.h | 5 +- tools/testing/selftests/clone3/Makefile | 4 +- .../clone3/clone3_cap_checkpoint_restore.c | 203 ++++++++++++++++++ 14 files changed, 285 insertions(+), 18 deletions(-) create mode 100644 tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c base-commit: f2b92b14533e646e434523abdbafddb727c23898