Bug 315416 – [regression] Storage::traverse(const String& type, const String& partition, ...) is broken

• Component: Website Storage
• Status: NEW

[Frédéric Wang Nélar]

Created attachment 479784 [details]
Patch

I was playing with some patches for bug 295249 and noticed this function is not working as expected.

This seems to be a regression from bug 203215 (probably Clear-Site-Data: "cache" is now broken too but I haven't checked).

Basically, https://github.com/WebKit/WebKit/pull/9665 introduced a traverseWithinRootPath() that takes a rootPath, which can be either a the root directory for Records, or a subfolder corresponding to a cache partition.

However, it calls recordsPathIsolatedCopy() traverseRecordsFiles which still assumes rootPath is the root directory for Records and browses the list of partition subfolders:  https://searchfox.org/wubkat/rev/d221d71a6a560cb45bb3e9b23e526b6bcfa9e4b3/Source/WebKit/NetworkProcess/cache/NetworkCacheStorage.cpp#355

Note that traverseWithinRootPath() is the only caller passing a rootPath that can be different from  root directory for Records: https://searchfox.org/wubkat/search?q=symbol:_ZN6WebKit12NetworkCacheL20traverseRecordsFilesERKN3WTF6StringES4_RKNS1_8FunctionIFvS4_S4_S4_bS4_EEE&redirect=false

Attached is a quick patch I made that seems to work, but I haven't tested extensively.