8cbefdbb89
pass socket address in our or out. This makes Linux programs using IPv6 working under emulation. This addresses kern/13279 by Jun-ichiro itojun Hagino. Change sendmsg()/recvmsg() to expect the control information to be passed the standard way (not 4.3BSD one, imlied by compat_43 code or MSG_COMPAT). Linux uses different (arguably broken) CMSG_ALIGN() on some architectures unfortunately, that would need to be handled eventually. Also provide some other trivial stubs (like linux_sys_send()) to avoid unneeded dependance on uipc_syscalls_43.c.