[Webkit-unassigned] [Bug 78879] New: Capture File snapshot at its creation time for files from FileSystem API

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=78879

           Summary: Capture File snapshot at its creation time for files
                    from FileSystem API
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kinuko at chromium.org


Capture File snapshot at its creation time for files from FileSystem API.

We roughly consider File object as a 'snapshot' of the underlying file, though we do not strictly force the model in normal use cases (e.g. for non-sliced, non-concatenated single files).

We should probably tighten this concept for files from FileSystem API, since we want to get rid of the possibility of making synchronous file operations on unknown sandboxed filesystems (e.g. the filesystem could be a remote filesystem), and also have another non-snapshot type of file object in the API (i.e. FileEntry).  Also it'll be much safer to change (fix) the behavior for FileSystem files than regular files since the API is still new.

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