[Webkit-unassigned] [Bug 211131] New: paths should be canonicalized before calling bwrap

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=211131

            Bug ID: 211131
           Summary: paths should be canonicalized before calling bwrap
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jackhill at jackhill.us

Before setting up worker sandboxes with Bubblewrap, the paths should be canonicalized by calling realpath(). Bubblewrap does not handle paths with absolute symlinks <https://github.com/containers/bubblewrap/issues/195>, so this avoids that problem. The error message presented by bwrap in such a case is, "bwrap: Can't create file at /path/to/symbolic/link: No such file or directory". This problem was observed on GNU Guix with WebKitGTK 2.28.1 <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=40837>.

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