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Classes for representing and manipulating interfaces.
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ValueErrorR(Rtname((s9/usr/lib64/python2.7/site-packages/sepolgen/interfaces.pytset_name,scCs|jS(N(R(R((s9/usr/lib64/python2.7/site-packages/sepolgen/interfaces.pytget_name1stfgetcCst|jd�S(Ni(tintR(R((s9/usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt<lambda>6scCs*d|jtj|jdj|j�fS(Ns0<sepolgen.policygen.Param instance [%s, %s, %s]>t (RRtfield_to_strR	tjoinR(R((s9/usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt__repr__8s(
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R	RRtTGT_TYPEt	obj_classt	itertoolstchainRRtimplicitly_typed_objectsRRtadd(RR	tavtparamstrettptavobjstobj((s9/usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt__param_insert>s0
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cCsd}t}tj|j�rKt|jtj||�dkrKd}qKntj|j�r�t|jtj||�dkr�d}q�ntj|j	�r�t|j	tj
||�dkr�d}q�nxA|jD]6}tj|�r�t|t�dkr	d}q	q�q�W|S(sjExtract the paramaters from an access vector.

    Extract the paramaters (in the form $N) from an access
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    Some attempt is made at resolving conflicts with other
    entries in the dict, but if an unresolvable conflict is
    found it is reported to the caller.

    The goal here is to figure out how interface paramaters are
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    a SRC_TYPE. In general an interface will look like this:

    interface(`foo', `
       allow $1 foo : file read;
    ')

    This is simple to figure out - $1 is a SRC_TYPE. A few interfaces
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    interface(`foo_trans',`
       domain_auto_trans($1,fingerd_exec_t,fingerd_t)

       allow $1 fingerd_t:fd use;
       allow fingerd_t $1:fd use;
       allow fingerd_t $1:fifo_file rw_file_perms;
       allow fingerd_t $1:process sigchld;
    ')

    Here the usage seems ambigious, but it is not. $1 is still domain
    and therefore should be returned as a SRC_TYPE.

    Returns:
      0  - success
      1  - conflict found
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