Assert Lockdown Mode flag has been set before queried

[pvollan]

3357b1f

Assert Lockdown Mode flag has been set before queried
https://bugs.webkit.org/show_bug.cgi?id=278128
rdar://133884110

Reviewed by Chris Dumez.

Assert that Lockdown Mode flag has been set before queried in the WebContent process. This patch also
initializes the Lockdown Mode flag in WebProcess earlier by using the value from the XPC initialization
message, which is sent in the XPC extra initialization data. This patch also asserts that JSC options
are set before JSC::initialize() is called. Setting JSC options after this call can lead to crashes.

* Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceEntryPoint.h:
(WebKit::XPCServiceInitializer):
* Source/WebKit/Shared/EntryPointUtilities/Cocoa/XPCService/XPCServiceEntryPoint.mm:
(WebKit::XPCServiceInitializerDelegate::getExtraInitializationData):
(WebKit::setJSCOptions):
* Source/WebKit/Shared/WebProcessCreationParameters.h:
* Source/WebKit/Shared/WebProcessCreationParameters.serialization.in:
* Source/WebKit/UIProcess/Launcher/cocoa/ProcessLauncherCocoa.mm:
(WebKit::ProcessLauncher::finishLaunchingProcess):
* Source/WebKit/UIProcess/WebProcessPool.cpp:
(WebKit::WebProcessPool::initializeNewWebProcess):
* Source/WebKit/UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::getLaunchOptions):
* Source/WebKit/WebProcess/WebProcess.cpp:
(WebKit::WebProcess::initializeProcess):
(WebKit::WebProcess::initializeWebProcess):
* Source/WebKit/WebProcess/WebProcess.h:
(WebKit::WebProcess::isLockdownModeEnabled const):

Canonical link: https://commits.webkit.org/282562@main

47ecfdd

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 wincairo-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt		✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash 47ecfdd)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 wincairo-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt		✅ 🛠 wpe-cairo
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[pvollan]

Thanks for reviewing!

[webkit-commit-queue]

Committed 282562@main (3357b1f): https://commits.webkit.org/282562@main

Reviewed commits have been landed. Closing PR #32441 and removing active labels.