CMSG_SPACE         57 maint/gnulib/lib/passfd.c   char buf[CMSG_SPACE (sizeof fd)];
CMSG_SPACE        117 maint/gnulib/lib/passfd.c   char buf[CMSG_SPACE (sizeof fd)];
CMSG_SPACE        145 maint/gnulib/lib/passfd.c   msg.msg_controllen = CMSG_SPACE (sizeof fd);
CMSG_SPACE        145 maint/gnulib/lib/sys_socket.in.h #  ifndef CMSG_SPACE