Win: Move parts of the AppContainerBase up into the AppContainer
Interface definition

This will hopefully prevent some PGO
SBOX_ERROR_CANNOT_WRITE_VARIABLE_VALUE crashes we've been seeing in
the wild and create better code cleanliness.

Bug: 1177001
Change-Id: I71259a2579742a3b783262ab16c1980011827cb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3378485
Reviewed-by: James Forshaw <forshaw@chromium.org>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Commit-Queue: Emily Andrews <emiled@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#957697}
NOKEYCHECK=True
GitOrigin-RevId: b5562e7049b33e5e169908124d52ce75737059b9
7 files changed
tree: f8cbf2a34e1a9f9e195636df0f1a2ecf1fc1e612
  1. linux/
  2. mac/
  3. policy/
  4. win/
  5. BUILD.gn
  6. COMMON_METADATA
  7. constants.h
  8. DEPS
  9. DIR_METADATA
  10. features.gni
  11. ipc.dict
  12. OWNERS
  13. README.md
  14. sandbox_export.h
README.md

Sandbox Library

This directory contains platform-specific sandboxing libraries. Sandboxing is a technique that can improve the security of an application by separating untrustworthy code (or code that handles untrustworthy data) and restricting its privileges and capabilities.

Each platform relies on the operating system's process primitive to isolate code into distinct security principals, and platform-specific technologies are used to implement the privilege reduction. At a high-level:

  • mac/ uses the Seatbelt sandbox. See the detailed design for more.
  • linux/ uses namespaces and Seccomp-BPF. See the detailed design for more.
  • win/ uses a combination of restricted tokens, distinct job objects, alternate desktops, and integrity levels. See the detailed design for more.

Built on top of the low-level sandboxing library is the //sandbox/policy component, which provides concrete policies and helper utilities for sandboxing specific Chromium processes and services. The core sandbox library cannot depend on the policy component.