return;
PRInt32 osfd = fd->secret->md.osfd; PRInt32 err; PRUint32  one = 1;  if (osfd <= 2) {  return; }  err = ioctl( osfd, FIONBIO, (char *) &one, sizeof(one)); if ( err != 0 ) { err = sock_errno(); _PR_MD_MAP_SOCKET_ERROR(err); }
_MD_MakeNonblock(PRFileDesc *f){    return; /* do nothing! */ }