---
breadcrumbs:
- - /chromium-os/developer-library
  - Chromium OS > Developer Library
page_name: reference
title: Reference
---

> 🚧 The library is currently under construction. See
> [the CrOS Developer Library Proposal](/chromium-os/developer-library/proposal)
> for more information.

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## Build

* [CrOS user & group management](/chromium-os/developer-library/reference/build/account-management)
* [Bazel remote caching](/chromium-os/developer-library/reference/build/bazel-remote-caching)
* [GN in ChromeOS](/chromium-os/developer-library/reference/build/chromeos-gn)

## Device

* [Disk format](/chromium-os/developer-library/reference/device/disk-format)

## Kernel

* [Kernel scheduler in ChromeOS](/chromium-os/developer-library/reference/kernel/kernel-scheduler)

## Logging

* [Logging on ChromeOS](/chromium-os/developer-library/reference/logging/logging)

## Release

* [ChromeOS Releases](/chromium-os/developer-library/reference/release/releases)

## Style guides

* [Python Style Guidelines](/chromium-os/developer-library/reference/style-guides/python)
* [Shell Style Guidelines](/chromium-os/developer-library/reference/style-guides/shell)

## Tools

* [cros deploy](/chromium-os/developer-library/reference/tools/cros-deploy)
* [cros flash](/chromium-os/developer-library/reference/tools/cros-flash)
* [CrOS Tools](/chromium-os/developer-library/reference/tools/cros-tools)
* [gsutil](/chromium-os/developer-library/reference/tools/gsutil)
* [repo](/chromium-os/developer-library/reference/tools/repo-tool)
* [xBuddy for Devserver](/chromium-os/developer-library/reference/tools/xbuddy)

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## Bugs

* [Life of a ChromeOS Bug](/chromium-os/developer-library/reference/bugs/life-of-a-bug)

## Development

* [Life of a ChromeOS commit](/chromium-os/developer-library/reference/development/cros-commit-pipeline)
* [Directory metadata](/chromium-os/developer-library/reference/development/dir-metadata)
* [Local & Remote Source Tree Layouts](/chromium-os/developer-library/reference/development/source-layout)

## Infrastructure

* [Root CA Certificates on ChromiumOS](/chromium-os/developer-library/reference/infrastructure/ca-certs)
* [ChromiumOS Input Stack](/chromium-os/developer-library/reference/infrastructure/input-stack)
* [/etc/lsb-release File Format](/chromium-os/developer-library/reference/infrastructure/lsb-release)
* [ChromiumOS Configuration](/chromium-os/developer-library/reference/infrastructure/os-config)

## Linux constants

* [Linux Error Number Table (errno)](/chromium-os/developer-library/reference/linux-constants/errnos)
* [Linux Signal Table](/chromium-os/developer-library/reference/linux-constants/signals)
* [Linux System Call Table](/chromium-os/developer-library/reference/linux-constants/syscalls)

## Policies

* [End of Life (EOL) / Auto Update Expiration (AUE) Process](/chromium-os/developer-library/reference/policies/eol-aue-process)

## Security

* [Security guidelines for closed-source components](/chromium-os/developer-library/reference/security/closed-source)
* [Peripheral firmware security](/chromium-os/developer-library/reference/security/firmware-updating)
* [Handling bugs found by fuzzers](/chromium-os/developer-library/reference/security/fuzzer-bugs)
* [Prioritizing security hardening bugs](/chromium-os/developer-library/reference/security/hardening-proritizing-guidelines)
* [Just-In-Time compilation in ChromeOS](/chromium-os/developer-library/reference/security/jit)
* [Port forwarding and tunneling in ChromeOS](/chromium-os/developer-library/reference/security/port-forwarding)
* [The ChromeOS security review process](/chromium-os/developer-library/reference/security/review-process)
* [Security in ChromeOS](/chromium-os/developer-library/reference/security/security-whitepaper)
* [SELinux in ChromeOS](/chromium-os/developer-library/reference/security/selinux)
* [Security-sensitive ChromeOS packages](/chromium-os/developer-library/reference/security/sensitive-chromeos-packages)
* [USB4 security](/chromium-os/developer-library/reference/security/usb4)
* [Write protection](/chromium-os/developer-library/reference/security/write-protection)

## Third party

* [ChromiumOS Archive Mirrors](/chromium-os/developer-library/reference/third-party/archive-mirrors)

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