760783 - sqlite3_quota_ftruncate() likely broken

Status: RESOLVED WONTFIX

(Core :: Storage: IndexedDB, defect, P5)

Description

[Jan Varga [:janv]]

I changed GetSize() in Mozilla1/src/dom/indexedDB/FileStream.cpp to call sqlite3_quota_file_truesize() instead of sqlite3_quota_file_size()
test_truncate.html now passes w/o any problems.
So it seems sqlite3_quota_ftruncate() is buggy (the file is correctly truncated, but it corrupts internal quota structures somehow), now when I look at its body, the code doesn't make sense to me.
However, I still wonder why it fails only on android.

Comment 1

[Jan Varga [:janv]]

Ben, so it seems that we hit the same bug here ...
If the limit is set to 0, then the quota group disappears at some point and sqlite_quota_file_size() returns -1

So we can call sqlite_quota_file_size() first and then call sqlite_quota_file_truesize() only if the former returned -1

Comment 4

[Jan Varga [:janv]]

SQLite's quota extension has been abandoned long time ago.