Bug 238402

Summary: Don't create directories on iOS if we are only using ephemeral storages
Product: WebKit Reporter: Alex Christensen <achristensen>
Component: New BugsAssignee: Alex Christensen <achristensen>
Status: RESOLVED FIXED    
Severity: Normal CC: cdumez, ddkilzer, sihui_liu, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch
none
Patch cdumez: review+, ews-feeder: commit-queue-

Description Alex Christensen 2022-03-25 19:02:24 PDT
Don't create directories on iOS if we are only using ephemeral storages
Comment 1 Alex Christensen 2022-03-25 19:05:21 PDT
Created attachment 455813 [details]
Patch
Comment 2 Chris Dumez 2022-03-26 13:55:13 PDT
Looks like iOS failures may be real?
Comment 3 Alex Christensen 2022-03-28 10:39:18 PDT
Comment on attachment 455813 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=455813&action=review

> Source/WebKit/UIProcess/Cocoa/WebProcessPoolCocoa.mm:334
> +    if (!process.sessionID().isEphemeral()) {

This was asserting because when we initialize the web process we don't always have a session ID yet.  I'm moving this to WebProcess::setWebsiteDataStoreParameters
Comment 4 Alex Christensen 2022-03-28 10:52:28 PDT
Created attachment 455929 [details]
Patch
Comment 5 Chris Dumez 2022-03-28 13:32:48 PDT
Comment on attachment 455929 [details]
Patch

r=me assuming the bots are happy.
Comment 6 Sihui Liu 2022-03-28 14:58:51 PDT
Comment on attachment 455929 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=455929&action=review

> Source/WebKit/UIProcess/WebsiteData/WebsiteDataStore.cpp:290
> +        m_cookieStorageDirectory = resolveAndCreateReadWriteDirectoryForSandboxExtension(WebProcessPool::cookieStorageDirectory());

It's a bit weird that WebsiteDataStore asks WebProcessPool for directory. I
If we think the directory is per WebsiteDataStore, maybe we should move cookieStorageDirectory() to WebsiteDataStore? 
If we don't think it's per WebsiteDataStore, maybe we should not send it in WebsiteDataStoreParameters?

> Source/WebKit/UIProcess/WebsiteData/WebsiteDataStore.cpp:1905
> +        if (String cookieStorageDirectory = WebProcessPool::cookieStorageDirectory(); !cookieStorageDirectory.isEmpty())

If we already call resolveDirectoriesIfNecessary() above, shouldn't we just check if (!m_cookieStorageDirectory.isEmpty())?
Comment 7 Alex Christensen 2022-03-29 12:30:27 PDT
This is indeed weird code that is quite old so I'm trying to minimize functional changes.  It is taking another step in its transition from process pool to data store.
Comment 8 Alex Christensen 2022-03-29 13:57:13 PDT
r292068
Comment 9 Alex Christensen 2022-03-29 13:57:51 PDT
(by the way, I agree with Sihui's cleanup suggestions and think they should be done, but not right now)
Comment 10 Radar WebKit Bug Importer 2022-03-29 21:06:35 PDT
<rdar://problem/91022750>
Comment 11 David Kilzer (:ddkilzer) 2022-03-29 21:07:15 PDT
<rdar://problem/79639418>