msghdr           1110 ext/socket/ancdata.c     const struct msghdr *msg;
msghdr           1136 ext/socket/ancdata.c     struct msghdr mh;
msghdr           1325 ext/socket/ancdata.c     struct msghdr *msg;
msghdr           1453 ext/socket/ancdata.c     struct msghdr mh;
msghdr            180 ext/socket/unixsocket.c     struct msghdr msg;
msghdr            257 include/ruby/win32.h extern int    recvmsg(int, struct msghdr *, int);
msghdr            258 include/ruby/win32.h extern int    sendmsg(int, const struct msghdr *, int);