[Bug 245314] /usr/bin/logger: cannot write to unix socket or network socket to log since r358919

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245314

--- Comment #5 from Conrad Meyer <cem at freebsd.org> ---
It seems like that check in sendit() is bogus.  In kern_sendit(), we permit
msg_name == NULL if CAP_CONNECT is present:

   730 int
   731 kern_sendit(struct thread *td, int s, struct msghdr *mp, int flags,
   732     struct mbuf *control, enum uio_seg segflg)
   733 {
   734         struct file *fp;
   735         struct uio auio;
   736         struct iovec *iov;
   737         struct socket *so;
   738         cap_rights_t *rights;
   739 #ifdef KTRACE
   740         struct uio *ktruio = NULL;
   741 #endif
   742         ssize_t len;
   743         int i, error;
   744
   745         AUDIT_ARG_FD(s);
   746         rights = &cap_send_rights;
   747         if (mp->msg_name != NULL) {
   748                 AUDIT_ARG_SOCKADDR(td, AT_FDCWD, mp->msg_name);
   749                 rights = &cap_send_connect_rights;
   750         }
   751         error = getsock_cap(td, s, rights, &fp, NULL, NULL);


And sendit() is just a shim around kern_sendit().

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