Update webpage "Documentation - hardened_malloc" from version 1.0.2+21 to 1.0.3
This commit is contained in:
parent
557e052b27
commit
366423c86a
SSH Key Fingerprint:
SHA256:FtEVfx1CmTKMy40VwZvF4k+3TC+QhCWy+EmPRg50Nnc
@ -1,26 +1,23 @@
|
||||
<!DOCTYPE html>
|
||||
|
||||
<!-- Inferencium - Website - Documentation - GrapheneOS hardened_malloc -->
|
||||
<!-- Version: 1.0.3 -->
|
||||
|
||||
<!-- Copyright 2023 Jake Winters -->
|
||||
<!-- SPDX-License-Identifier: BSD-3-Clause -->
|
||||
|
||||
<!-- Version: 1.0.2+21 -->
|
||||
|
||||
|
||||
<html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="utf-8"/>
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
||||
<link rel="stylesheet" href="../main.css"/>
|
||||
<title>Inferencium - Documentation - GrapheneOS hardened_malloc</title>
|
||||
<link rel="stylesheet" href=../main.css>
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
</head>
|
||||
<body>
|
||||
<!-- Navigation bar -->
|
||||
<div class="sidebar">
|
||||
<a href="../index.html"><img src="../asset/img/logo-inferencium-no_text.png" width="110px" height="110px"></a>
|
||||
<a href="../index.html" class="title">Inferencium</a><br>
|
||||
<br>
|
||||
<br>
|
||||
<nav class="nav-bar">
|
||||
<div><a href="../index.html"><img src="../asset/img/logo-inferencium-no_text.png" width="110px" height="110px"/></a></div>
|
||||
<div><a href="../index.html" class="title">Inferencium</a></div>
|
||||
<div><a href="../about.html">About</a></div>
|
||||
<div><a href="../contact.html">Contact</a></div>
|
||||
<div><a href="../blog.html">Blog</a></div>
|
||||
@ -28,7 +25,7 @@
|
||||
<div><a href="../source.html">Source</a></div>
|
||||
<div><a href="../key.html">Key</a></div>
|
||||
<div><a href="../changelog.html">Changelog</a></div>
|
||||
</div>
|
||||
</nav>
|
||||
<section id="introduction">
|
||||
<h1 id="introduction"><a href="#introduction">Documentation - GrapheneOS hardened_malloc</a></h1>
|
||||
<p>This documentation contains instructions to use
|
||||
@ -44,76 +41,65 @@
|
||||
<p>This documentation is also available in portable AsciiDoc format in my
|
||||
<a href="https://src.inferencium.net/Inferencium/doc/src/branch/stable/security/hardened_malloc.adoc">documentation source code repository</a>.
|
||||
</section>
|
||||
<!-- Table of contents -->
|
||||
<section id="toc">
|
||||
<h2 id="toc"><a href="#toc">Table of Contents<a/></h2>
|
||||
<ul>
|
||||
<li><a href="#memory_pages">Increase Permitted Amount of Memory Pages</a></li>
|
||||
<li><a href="#clone_source_code">Clone hardened_malloc Source Code</a></li>
|
||||
<li><a href="#enter_local_repository">Enter hardened_malloc Local Git Repository</a></li>
|
||||
<li><a href="#compile">Compile hardened_malloc</a></li>
|
||||
<li><a href="#copy_library">Copy Compiled hardened_malloc Library</a></li>
|
||||
<li><a href="#preload_on_boot">Set System to Preload hardened_malloc on Boot</a></li>
|
||||
</ul>
|
||||
</section>
|
||||
<section id="memory_pages">
|
||||
<h2 id="memory_pages"><a href="#memory_pages">Increase Permitted Amount of Memory Pages</a></h2>
|
||||
<p>Add <code>vm.max_map_count = 1048576</code> to
|
||||
<code>/etc/sysctl.conf</code> to accommodate hardened_malloc's large
|
||||
amount of guard pages.</p>
|
||||
</section>
|
||||
<section id="clone_source_code">
|
||||
<h2 id="clone_source_code"><a href="#clone_source_code">Clone hardened_malloc Source Code</a></h2>
|
||||
<p><code>$ git clone https://github.com/GrapheneOS/hardened_malloc.git</code></p>
|
||||
</section>
|
||||
<section id="enter_local_repository">
|
||||
<h2 id="enter_local_repository"><a href="#enter_local_repository">Enter hardened_malloc Local Git Repository</a></h2>
|
||||
<p><code>$ cd hardened_malloc/</code></p>
|
||||
</section>
|
||||
<section id="compile">
|
||||
<h2 id="compile"><a href="#compile">Compile hardened_malloc</a></h2>
|
||||
<p><p><code>$ make <var><arguments></var></code></p>
|
||||
<p><code>CONFIG_N_ARENA=<var>n</var></code> can be adjusted to increase
|
||||
parallel performance at the expense of memory usage, or decrease memory
|
||||
usage at the expense of parallel performance, where <var>n</var> is an
|
||||
integer. Higher values prefer parallel performance, lower values prefer
|
||||
lower memory usage. The number of arenas has no impact on the security
|
||||
properties of hardened_malloc.
|
||||
<ul>
|
||||
<li>Minimum number of arenas: 1</li>
|
||||
<li>Maximum number of arenas: 256</li>
|
||||
</ul>
|
||||
<p>For extra security, <code>CONFIG_SEAL_METADATA=true</code> can be
|
||||
used in order to control whether Memory Protection Keys are used to
|
||||
disable access to all writable allocator state outside of the memory
|
||||
allocator code. It's currently disabled by default due to a significant
|
||||
performance cost for this use case on current generation hardware.
|
||||
Whether or not this feature is enabled, the metadata is all contained
|
||||
within an isolated memory region with high entropy random guard regions
|
||||
around it.</p>
|
||||
<p>For low-memory systems, <code>VARIANT=light</code> can be used to
|
||||
compile the light variant of hardened_malloc, which sacrifices some
|
||||
security for much less memory usage.</p>
|
||||
<p>For all compile-time options, see the
|
||||
<a href="https://github.com/GrapheneOS/hardened_malloc#configuration">configuration section</a>
|
||||
of hardened_malloc's extensive official documentation.</p>
|
||||
</section>
|
||||
<section id="copy_library">
|
||||
<h2 id="copy_library"><a href="#copy_library">Copy Compiled hardened_malloc Library</a></h2>
|
||||
<p><code># cp out/libhardened_malloc.so <var><target path></var></code></p>
|
||||
</section>
|
||||
<section id="preload_on_boot">
|
||||
<h2 id="preload_on_boot"><a href="#preload_on_boot">Set System to Preload hardened_malloc on Boot</a></h2>
|
||||
<p>
|
||||
<ul>
|
||||
<li>musl-based systems: Add
|
||||
<code>export LD_PRELOAD="<var><hardened_malloc path></var>"</code>
|
||||
to <code>/etc/environment</code></li>
|
||||
<li>glibc-based systems:
|
||||
Add <code><var><hardened_malloc path></var></code> to
|
||||
<code>/etc/ld.so.preload</code></li>
|
||||
</ul>
|
||||
</p>
|
||||
</section>
|
||||
<nav id="toc">
|
||||
<h2 id="toc"><a href="#toc">Table of Contents<a/></h2>
|
||||
<ul>
|
||||
<li><a href="#memory_pages">Increase Permitted Amount of Memory Pages</a></li>
|
||||
<li><a href="#clone_source_code">Clone hardened_malloc Source Code</a></li>
|
||||
<li><a href="#enter_local_repository">Enter hardened_malloc Local Git Repository</a></li>
|
||||
<li><a href="#compile">Compile hardened_malloc</a></li>
|
||||
<li><a href="#copy_library">Copy Compiled hardened_malloc Library</a></li>
|
||||
<li><a href="#preload_on_boot">Set System to Preload hardened_malloc on Boot</a></li>
|
||||
</ul>
|
||||
</nav>
|
||||
<section id="memory_pages">
|
||||
<h2 id="memory_pages"><a href="#memory_pages">Increase Permitted Amount of Memory Pages</a></h2>
|
||||
<p>Add <code>vm.max_map_count = 1048576</code> to
|
||||
<code>/etc/sysctl.conf</code> to accommodate hardened_malloc's large amount of guard
|
||||
pages.</p>
|
||||
</section>
|
||||
<section id="clone_source_code">
|
||||
<h2 id="clone_source_code"><a href="#clone_source_code">Clone hardened_malloc Source Code</a></h2>
|
||||
<p><code>$ git clone https://github.com/GrapheneOS/hardened_malloc.git</code></p>
|
||||
</section>
|
||||
<section id="enter_local_repository">
|
||||
<h2 id="enter_local_repository"><a href="#enter_local_repository">Enter hardened_malloc Local Git Repository</a></h2>
|
||||
<p><code>$ cd hardened_malloc/</code></p>
|
||||
</section>
|
||||
<section id="compile">
|
||||
<h2 id="compile"><a href="#compile">Compile hardened_malloc</a></h2>
|
||||
<p><p><code>$ make <var><arguments></var></code></p>
|
||||
<p><code>CONFIG_N_ARENA=<var>n</var></code> can be adjusted to increase parallel
|
||||
performance at the expense of memory usage, or decrease memory usage at the expense of
|
||||
parallel performance, where <var>n</var> is an integer. Higher values prefer parallel
|
||||
performance, lower values prefer lower memory usage. The number of arenas has no impact
|
||||
on the security properties of hardened_malloc.<br>
|
||||
<b>Minimum number of arenas:</b> 1<br>
|
||||
<b>Maximum number of arenas:</b> 256</p>
|
||||
<p>For extra security, <code>CONFIG_SEAL_METADATA=true</code> can be used in order to
|
||||
control whether Memory Protection Keys are used to disable access to all writable
|
||||
allocator state outside of the memory allocator code. It's currently disabled by default
|
||||
due to a significant performance cost for this use case on current generation hardware.
|
||||
Whether or not this feature is enabled, the metadata is all contained within an isolated
|
||||
memory region with high entropy random guard regions around it.</p>
|
||||
<p>For low-memory systems, <code>VARIANT=light</code> can be used to compile the light
|
||||
variant of hardened_malloc, which sacrifices some security for much less memory
|
||||
usage.</p>
|
||||
<p>For all compile-time options, see the
|
||||
<a href="https://github.com/GrapheneOS/hardened_malloc#configuration">configuration section</a>
|
||||
of hardened_malloc's extensive official documentation.</p>
|
||||
</section>
|
||||
<section id="copy_library">
|
||||
<h2 id="copy_library"><a href="#copy_library">Copy Compiled hardened_malloc Library</a></h2>
|
||||
<p><code># cp out/libhardened_malloc.so <var><target path></var></code></p>
|
||||
</section>
|
||||
<section id="preload_on_boot">
|
||||
<h2 id="preload_on_boot"><a href="#preload_on_boot">Set System to Preload hardened_malloc on Boot</a></h2>
|
||||
<p><b>musl-based systems:</b> Add
|
||||
<code>export LD_PRELOAD="<var><hardened_malloc path></var>"</code> to
|
||||
<code>/etc/environment</code><br>
|
||||
<b>glibc-based systems:</b> Add <code><var><hardened_malloc path></var></code> to
|
||||
<code>/etc/ld.so.preload</code></p>
|
||||
</section>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user