D6829: Add ability to use the new kauth helper in file ioslave

[Chinmoy Ranjan Pradhan]

chinmoyr added a comment.


  Actually, I like this construct quite a bit.
  
    if (!dir.rmdir(itemPath)) {
        if (auto ret = execWithElevatedPrivilege(RMDIR, itemPath)) {
            if (!ret.wasCanceled()) {
                error(KIO::ERR_CANNOT_DELETE, itemPath);
            }
            return false;
        }
    }
  
  But for this to work the class should be something like this
  
    class ExecWithElevatedPrivilegeReturnValue
    {
    public:
        static ExecWithElevatedPrivilegeReturnValue success() { return ExecWithElevatedPrivilegeReturnValue{false, false}; }
        static ExecWithElevatedPrivilegeReturnValue failure() { return ExecWithElevatedPrivilegeReturnValue{true, false}; }
        static ExecWithElevatedPrivilegeReturnValue canceled() { return ExecWithElevatedPrivilegeReturnValue{true, true}; }
        operator bool() const { return m_failed; }
        bool wasCanceled() const { return m_canceled; }
    private:
        ExecWithElevatedPrivilegeReturnValue(bool failed, bool canceled) : m_failed(failed), m_canceled(canceled) {}
        const bool m_failed;
        const bool m_canceled;
    };
  
  am I correct?

REVISION DETAIL
  https://phabricator.kde.org/D6829

To: chinmoyr, dfaure, #frameworks
Cc: #frameworks
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