0
Files
src/sandbox
Thiabaud Engelbrecht a66cf2e479 [discardable] Release Discardable Memory from Freelists
We now release memory going into the freelists of
`ClientDiscardableSharedMemoryManager`. This is done using
`madvise(MADV_REMOVE)` or similar.

We hide these changes being a feature which is disabled by default, so
this CL doesn't have any effect on current functionality.

Bug: 1142593
Change-Id: I302ddf8506480f656454a08fe6b016db66c68c8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2412833
Commit-Queue: Thiabaud Engelbrecht <thiabaud@google.com>
Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Benoit L <lizeb@chromium.org>
Reviewed-by: ssid <ssid@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#838087}
2020-12-17 15:56:58 +00:00
..
2020-12-08 18:56:44 +00:00
2020-12-14 19:06:26 +00:00
2020-10-08 22:35:31 +00:00

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.