From patchwork Thu Dec 19 06:30:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yuehui Zhao X-Patchwork-Id: 13914525 Received: from mail-m49247.qiye.163.com (mail-m49247.qiye.163.com [45.254.49.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53EB22163A9; Thu, 19 Dec 2024 06:30:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.247 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734589860; cv=none; b=TBreNqYDXQ9dXV+lQMs6gWXw/cReX4ErBJuAVg9/H5lUEXBy2/NeqVrvbWloPk22hoI8h9hOWjqmTAL7+spCDLV/29Bv2YduI/d4PpXjyRsUmyy7kmlDHIXrEglLB2Rw7cPNhUBP+/ObeZ+sJdnRX0J7u7qvikCdLT0455xcsTw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734589860; c=relaxed/simple; bh=FoSQg45insJJ80NfiIjr9+I1G07P7jS/gPwyzDj+91c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BknR4JWH3NuUcjSFBV3eyP+rBUoOKn2XjvInl80iOwwJ21dA6v1+I4LSkjNU3R+FRtSrRu6aaTFepGULrapBbSTTkr85zljpdUjSC3AD0lnGYiIKn2GZomzDC0fQ6zXXeXre9u2xOxjL6EwaPUE7MARr8ryTp1kiFuJSsa/5BrU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=cqsoftware.com.cn; spf=pass smtp.mailfrom=cqsoftware.com.cn; dkim=pass (1024-bit key) header.d=cqsoftware.com.cn header.i=@cqsoftware.com.cn header.b=F/T6idG0; arc=none smtp.client-ip=45.254.49.247 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=cqsoftware.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=cqsoftware.com.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=cqsoftware.com.cn header.i=@cqsoftware.com.cn header.b="F/T6idG0" Received: from localhost.localdomain (unknown [123.149.2.140]) by smtp.qiye.163.com (Hmail) with ESMTP id 6305454e; Thu, 19 Dec 2024 14:30:46 +0800 (GMT+08:00) From: Yuehui Zhao To: alexs@kernel.org, si.yanteng@linux.dev, corbet@lwn.net Cc: dzm91@hust.edu.cn, mic@digikod.net, gnoack@google.com, linux-doc@vger.kernel.org, linux-security-module@vger.kernel.org, Yuehui Zhao Subject: [PATCH v2 1/2] docs/zh_CN: Add security index Chinese translation Date: Thu, 19 Dec 2024 14:30:34 +0800 Message-ID: <89ad67b4b4e12a52581cfa0f87f194e1aee3e526.1734575890.git.zhaoyuehui@cqsoftware.com.cn> X-Mailer: git-send-email 2.43.5 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlCTU4aVkJCQx5LT0IfH09PSFYVFAkWGhdVEwETFh oSFyQUDg9ZV1kYEgtZQVlKSUhVSk9CVUlVSk9LWVdZFhoPEhUdFFlBWU9LSFVKS0hKTkxOVUpLS1 VKQktLWQY+ X-HM-Tid: 0a93dd9c92bf03a3kunm6305454e X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NTo6Vhw*LzIVLhUfEQsCLh4x GRAKCxhVSlVKTEhPTkNCQ09MSk9MVTMWGhIXVQETGhQCDh4TDhI7GAoIFB0PDBoJHlUYFBZVGBVF WVdZEgtZQVlKSUhVSk9CVUlVSk9LWVdZCAFZQUpMTUw3Bg++ DKIM-Signature: a=rsa-sha256; b=F/T6idG09itd12R6DBgvgCC3TLbzBYSgx00uRJdxJg5+yTW8CdxbuDe3Spd2m/y3T0lAFG0FyBwuyajJce3tjJ2kh7Fj+AZ+pfkP9lKgOkIWI5P4pl444THs++m59Argzop39gem0PWVc8rAYc3r47pRDmuR/CyZwq27yo+9fK4=; c=relaxed/relaxed; s=default; d=cqsoftware.com.cn; v=1; bh=5x2Kf2btonTG0p7Xy9NQjHTxoSsp/MdEk/Kq2bv8xTE=; h=date:mime-version:subject:message-id:from; Translate .../security/index.rst into Chinese. Reviewed-by: Yanteng Si Signed-off-by: Yuehui Zhao --- .../translations/zh_CN/security/index.rst | 33 +++++++++++++++++++ .../translations/zh_CN/subsystem-apis.rst | 2 +- 2 files changed, 34 insertions(+), 1 deletion(-) create mode 100644 Documentation/translations/zh_CN/security/index.rst diff --git a/Documentation/translations/zh_CN/security/index.rst b/Documentation/translations/zh_CN/security/index.rst new file mode 100644 index 000000000000..6b56b4f87315 --- /dev/null +++ b/Documentation/translations/zh_CN/security/index.rst @@ -0,0 +1,33 @@ +.. SPDX-License-Identifier: GPL-2.0 + +.. include:: ../disclaimer-zh_CN.rst + +:Original: Documentation/security/index.rst + +:翻译: + + 赵岳辉 Yuehui Zhao + +======== +安全文档 +======== + +.. toctree:: + :maxdepth: 1 + +TODOLIST: +* credentials +* snp-tdx-threat-model +* IMA-templates +* keys/index +* lsm +* lsm-development +* sak +* SCTP +* self-protection +* siphash +* tpm/index +* digsig +* landlock +* secrets/index +* ipe diff --git a/Documentation/translations/zh_CN/subsystem-apis.rst b/Documentation/translations/zh_CN/subsystem-apis.rst index 47780bb0772f..8b646c1010be 100644 --- a/Documentation/translations/zh_CN/subsystem-apis.rst +++ b/Documentation/translations/zh_CN/subsystem-apis.rst @@ -88,6 +88,7 @@ TODOList: cpu-freq/index iio/index virt/index + security/index PCI/index peci/index @@ -102,7 +103,6 @@ TODOList: * watchdog/index * hwmon/index * accel/index -* security/index * crypto/index * bpf/index * usb/index From patchwork Thu Dec 19 06:30:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yuehui Zhao X-Patchwork-Id: 13914540 Received: from mail-m12783.qiye.163.com (mail-m12783.qiye.163.com [115.236.127.83]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 159AA7082A; Thu, 19 Dec 2024 06:36:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.236.127.83 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734590169; cv=none; b=fwKQvVkk2BG43TVuge9LOmHZX2fHRbUPrU5aJzkiiwzFhcelTq4uEQG53RkDQ7sQJi6p6oa03vofkZ6TFgFZpeMWg3//oAJq4fzyZZWI2mBvY/vkC+ddx1BPZFEWVKH23zSJ58X46j1kOt52pLKWA0sp8ZIZvFs6XArfwxRoDvs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734590169; c=relaxed/simple; bh=xFj2C0TeVO4NtNI6E9ROrfYkVTX/2GvRVZuqyOPGF7g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tJvXi2ERvuJHyiOTQNWADSc+z1wnxdwJ25mQY9pyh1i2fdxM93aWqewh2+iE5NpFalu9/C1Y0P0wGMoIrEYTGd9+cXggCngYMsDvnJM5lgQx1rfgYgLW0ghh5syD/QV4ekG7vy1R5AsmCKI7IIvaT3exoaLbT+IsHaJlzvzHjJE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=cqsoftware.com.cn; spf=pass smtp.mailfrom=cqsoftware.com.cn; dkim=pass (1024-bit key) header.d=cqsoftware.com.cn header.i=@cqsoftware.com.cn header.b=Eod0uYXb; arc=none smtp.client-ip=115.236.127.83 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=cqsoftware.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=cqsoftware.com.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=cqsoftware.com.cn header.i=@cqsoftware.com.cn header.b="Eod0uYXb" Received: from localhost.localdomain (unknown [123.149.2.140]) by smtp.qiye.163.com (Hmail) with ESMTP id 63054557; Thu, 19 Dec 2024 14:30:47 +0800 (GMT+08:00) From: Yuehui Zhao To: alexs@kernel.org, si.yanteng@linux.dev, corbet@lwn.net Cc: dzm91@hust.edu.cn, mic@digikod.net, gnoack@google.com, linux-doc@vger.kernel.org, linux-security-module@vger.kernel.org, Yuehui Zhao Subject: [PATCH v2 2/2] docs/zh_CN: Add security lsm Chinese translation Date: Thu, 19 Dec 2024 14:30:35 +0800 Message-ID: X-Mailer: git-send-email 2.43.5 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVkZHUlNVk9OHUgfGU4dH01MSVYVFAkWGhdVEwETFh oSFyQUDg9ZV1kYEgtZQVlKSUhVSk9CVUlVSk9LWVdZFhoPEhUdFFlBWU9LSFVKS0hKTENKVUpLS1 VKQktLWQY+ X-HM-Tid: 0a93dd9c96b503a3kunm63054557 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PC46CRw4FDIRPhUzPxQRLh8x AggKCyNVSlVKTEhPTkNCQ09DSUxIVTMWGhIXVQETGhQCDh4TDhI7GAoIFB0PDBoJHlUYFBZVGBVF WVdZEgtZQVlKSUhVSk9CVUlVSk9LWVdZCAFZQU1DT083Bg++ DKIM-Signature: a=rsa-sha256; b=Eod0uYXbWlnYKjoJVVb16a0ZAVmJuKLRkKAAvYe9eFvQ3Mz6H8AUCCKWBfNJK9joR/Jyx2uNuIZAWhdjyByhcY7Gc58dP9kotZrjL0E5IP+Yiz7yAI+hFUsZ8Py8BkWUb0b8i2K/DcJxhxhiITscEAYmTmgUCrzZGOWOWkHXyns=; c=relaxed/relaxed; s=default; d=cqsoftware.com.cn; v=1; bh=VaLt2rPSfqtlGWCHK8+MuC/3m2hpM2fDzcZr9Qd51kk=; h=date:mime-version:subject:message-id:from; Translate .../security/lsm.rst into Chinese. Update the translation through commit 6d2ed653185b ("lsm: move hook comments docs to security/security.c") Signed-off-by: Yuehui Zhao Reviewed-by: Yanteng Si --- .../translations/zh_CN/security/index.rst | 3 +- .../translations/zh_CN/security/lsm.rst | 95 +++++++++++++++++++ 2 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 Documentation/translations/zh_CN/security/lsm.rst diff --git a/Documentation/translations/zh_CN/security/index.rst b/Documentation/translations/zh_CN/security/index.rst index 6b56b4f87315..92e2d8a7dec8 100644 --- a/Documentation/translations/zh_CN/security/index.rst +++ b/Documentation/translations/zh_CN/security/index.rst @@ -15,12 +15,13 @@ .. toctree:: :maxdepth: 1 + lsm + TODOLIST: * credentials * snp-tdx-threat-model * IMA-templates * keys/index -* lsm * lsm-development * sak * SCTP diff --git a/Documentation/translations/zh_CN/security/lsm.rst b/Documentation/translations/zh_CN/security/lsm.rst new file mode 100644 index 000000000000..941f94fb2acc --- /dev/null +++ b/Documentation/translations/zh_CN/security/lsm.rst @@ -0,0 +1,95 @@ +.. SPDX-License-Identifier: GPL-2.0 +.. include:: ../disclaimer-zh_CN.rst + +:Original: Documentation/security/lsm.rst + +:翻译: + + 赵岳辉 Yuehui Zhao + +================================ +Linux安全模块:Linux通用安全钩子 +================================ + +:作者: Stephen Smalley +:作者: Timothy Fraser +:作者: Chris Vance + +.. note:: + + 本文中描述的api已经过时了。 + +介绍 +==== + +在2001年3月,美国国家安全局(NSA)在2.5 Linux内核峰会上做了一个关于安全 +增强Linux(SELinux)的报告。SELinux是Linux内核中一种实现灵活且细粒度的非 +自主访问控制,最初作为自己特定的内核补丁实现。其他一些安全项目(例如RSBAC、 +Medusa)也为Linux内核开发了灵活的访问控制架构,并且多个项目为Linux开发了 +特定的访问控制模型(例如LIDS、DTE、SubDomain)。每个项目都开发并维护了自 +己的内核补丁,以支持其安全需求。 + +针对美国国家安全局的报告,Linus Torvalds发表了一系列言论,描述了一个他愿 +意考虑纳入主流Linux内核的安全框架。他描述了一个通用的框架,该框架将提供 +一组安全钩子来控制对内核对象的操作,同时在内核数据结构中提供一组不透明的 +安全域来维护安全属性。这个框架可以被可加载的内核模块用来实现任何所需的安 +全模型。Linus还提出了将Linux权能代码迁移到这样一个模块中的可能性。 + +Linux安全模块(LSM)项目是由WireX发起开发的这样一个框架。LSM是几个安全 +项目共同开发的成果,包括immununix、SELinux、SGI和Janus,以及包括 +Greg Kroah-Hartman和James Morris在内的几个人,来开发一个实现这一框架的 +Linux内核补丁。这项工作在2003年12月被纳入主流内核。此技术报告概述了该框 +架和权能安全模块的内容。 + +LSM框架 +======= + +LSM框架提供了一个通用的内核框架来支持安全模块。特别地,LSM框架主要关注 +支持访问控制模块,尽管未来的开发可能会解决其他安全需求,比如沙箱。就其 +本身而言,框架不提供任何额外的安全;它仅提供了支持安全模块的基础架构。 +LSM框架是可选的,要求开启 `CONFIG_SECURITY` 配置。权能逻辑作为一个安全 +模块被实现。该权能模块将在 `LSM权能模块`_ 一节中进一步讨论。 + +LSM框架在内核数据结构中包含安全域,并在内核代码的关键点调用钩子函数来 +管理这些安全域并执行访问控制。它还增加了注册安全模块的函数。接口 +/sys/kernel/security/lsm记录了一个以逗号分隔的安全模块列表,这些模块在 +系统中是激活的。 + +LSM安全域只是 ``void*`` 指针。数据被称为blob,这些数据可以由框架或使用 +它的各个安全模块进行管理。多个安全模块共同使用的安全blob通常由框架管理。 +对于进程和程序执行的安全信息,安全域包含在 :c:type: +`struct task_struct ` 和 :c:type: `struct cred ` 中。 +对于文件系统的安全信息,安全域包含在 :c:type: +`struct super_block ` 中。对于管道、文件和套接字的安全信息, +安全域包含在 :c:type: `struct inode ` 和 :c:type: `struct file ` +中。对于System V IPC的安全信息,安全域被添加到 :c:type: +`struct kern_ipc_perm ` 和 :c:type: `struct msg_msg ` +中;另外,:c:type: `struct msg_msg ` 、struct msg_queue和 +struct shmid_kernel的定义被移动到头文件中( ``include/linux/msg.h`` 和 +``include/linux/shm.h`` 视情况而定),以允许安全模块使用这些定义。 + +对于数据包和网络设备的安全信息,安全域被添加到 :c:type: +`struct sk_buff ` 和 :c:type: `struct scm_cookie ` 中。 +与其他安全模块数据不同,这里使用的数据是一个32位整数。安全模块需要将这些值 +进行映射或关联到真正的安全属性。 + +LSM钩子被维护在链表中。每个钩子函数都维护一个链表,这些钩子按照CONFIG_LSM中 +指定的顺序被调用。每个钩子的详细文档都包含在 `security/security.c` 源文件中。 + +LSM框架提供了一种近似通用的安全模块堆栈。它定义了security_add_hooks(),每个安 +全模块向它传递一个 :c:type: `struct security_hooks_list ` +,该结构会被添加到链表中。LSM框架没有提供移除已注册钩子的机制。SELinux安全 +模块已经实现了一种移除自身的方法,然而该特性已被弃用。 + +这些钩子可以分为两大类:用于管理安全域的钩子和用于执行访问控制的钩子。 +第一类钩子的示例包括security_inode_alloc()和security_inode_free(),这些 +钩子用于为inode对象分配和释放安全结构。第二类钩子的示例是 +security_inode_permission()钩子,该钩子在访问inode时检查权限。 + +LSM权能模块 +=========== + +POSIX.1e 权能逻辑作为一个安全模块维护,存储在文件 ``security/commoncap.c`` +中。权能模块使用 :c:type: `lsm_info` 描述中的order域来标识它为第一个注册 +的安全模块。与其他模块不同,权能安全模块不使用通用的安全blob。其原因是历史 +性的,主要基于开销、复杂性和性能的考虑。