[webkit-changes] [WebKit/WebKit] b22810: Block Mach service in sandbox with probability

[Per Arne Vollan]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: b228106f192b62d26cd92fe70ef22a1bca52c275
      https://github.com/WebKit/WebKit/commit/b228106f192b62d26cd92fe70ef22a1bca52c275
  Author: Per Arne Vollan <pvollan at apple.com>
  Date:   2023-02-21 (Tue, 21 Feb 2023)

  Changed paths:
    M Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml
    M Source/WebKit/WebProcess/WebPage/WebPage.cpp

  Log Message:
  -----------
  Block Mach service in sandbox with probability
https://bugs.webkit.org/show_bug.cgi?id=252644
rdar://105708662

Reviewed by Geoffrey Garen.

Block the launchd Mach service in the WebContent process sandbox with probability. This service is blocked
by not creating a generic Mach bootstrap sandbox extension. This patch also adds a setting to disable the
probabilistic sandbox feature.

* Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml:
* Source/WebKit/WebProcess/WebPage/WebPage.cpp:
(WebKit::m_appHighlightsVisible):

Canonical link: https://commits.webkit.org/260634@main