android: Possibly block at runtime sched_setaffinity and sched_getaffinity

These are only used by ongoing experiments, and they should be blocked
if not in the experiment group.

Bug: 1271302
Change-Id: Ic8a23bb691857de51a5683dfafd4f802627a2e15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3290227
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Eric Seckler <eseckler@chromium.org>
Reviewed-by: Matthew Denton <mpdenton@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/main@{#943394}
NOKEYCHECK=True
GitOrigin-RevId: 1a0498917c56c7155010a309629304dc0bfc3676
3 files changed
tree: eca4b4fa11f5d1a2cf5f487e7939a7a6d5287a76
  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.