• Gleb Smirnoff's avatar
    sockets: use positive flag for file descriptor socket reference · bc760564
    Gleb Smirnoff authored
    Rename SS_NOFDREF to SS_FDREF and flip all bitwise operations.
    Mark sockets created by socreate() with SS_FDREF.
    
    This change is mostly illustrative. With it we see that SS_FDREF
    is a debugging flag, since:
    * socreate() takes a reference with soref().
    * on accept path solisten_dequeue() takes a reference
      with soref() and then soaccept() sets SS_FDREF.
    * soclose() checks SS_FDREF, removes it and does sorele().
    
    Reviewed by:		tuexen
    Differential revision:	https://reviews.freebsd.org/D35678
    bc760564