int server_open_native_socket(Server *s) {
static const union sockaddr_union sa = {
.un.sun_family = AF_UNIX,
.un.sun_path = "/run/systemd/journal/socket",
};
int r;
assert(s);
if (s->native_fd < 0) {
s->native_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
if (s->native_fd < 0)
return log_error_errno(errno, "socket() failed: %m");
(void) sockaddr_un_unlink(&sa.un);
r = bind(s->native_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
if (r < 0)
return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
(void) chmod(sa.un.sun_path, 0666);
} else
(void) fd_nonblock(s->native_fd, true);
r = setsockopt_int(s->native_fd, SOL_SOCKET, SO_PASSCRED, true);
if (r < 0)
return log_error_errno(r, "SO_PASSCRED failed: %m");
#if HAVE_SELINUX
if (mac_selinux_use()) {
r = setsockopt_int(s->native_fd, SOL_SOCKET, SO_PASSSEC, true);
if (r < 0)
log_warning_errno(r, "SO_PASSSEC failed: %m");
}
#endif
r = setsockopt_int(s->native_fd, SOL_SOCKET, SO_TIMESTAMP, true);
if (r < 0)
return log_error_errno(r, "SO_TIMESTAMP failed: %m");
r = sd_event_add_io(s->event, &s->native_event_source, s->native_fd, EPOLLIN, server_process_datagram, s);
if (r < 0)
return log_error_errno(r, "Failed to add native server fd to event loop: %m");
r = sd_event_source_set_priority(s->native_event_source, SD_EVENT_PRIORITY_NORMAL+5);
if (r < 0)
return log_error_errno(r, "Failed to adjust native event source priority: %m");
return 0;
}
int server_open_stdout_socket(Server *s) {
static const union sockaddr_union sa = {
.un.sun_family = AF_UNIX,
.un.sun_path = "/run/systemd/journal/stdout",
};
int r;
assert(s);
if (s->stdout_fd < 0) {
s->stdout_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
if (s->stdout_fd < 0)
return log_error_errno(errno, "socket() failed: %m");
(void) sockaddr_un_unlink(&sa.un);
r = bind(s->stdout_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
if (r < 0)
return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
(void) chmod(sa.un.sun_path, 0666);
if (listen(s->stdout_fd, SOMAXCONN) < 0)
return log_error_errno(errno, "listen(%s) failed: %m", sa.un.sun_path);
} else
(void) fd_nonblock(s->stdout_fd, true);
r = sd_event_add_io(s->event, &s->stdout_event_source, s->stdout_fd, EPOLLIN, stdout_stream_new, s);
if (r < 0)
return log_error_errno(r, "Failed to add stdout server fd to event source: %m");
r = sd_event_source_set_priority(s->stdout_event_source, SD_EVENT_PRIORITY_NORMAL+5);
if (r < 0)
return log_error_errno(r, "Failed to adjust priority of stdout server event source: %m");
return 0;
}
void stdout_stream_send_notify(StdoutStream *s) {
struct iovec iovec = {
.iov_base = (char*) "FDSTORE=1",
.iov_len = STRLEN("FDSTORE=1"),
};
struct msghdr msghdr = {
.msg_iov = &iovec,
.msg_iovlen = 1,
};
struct cmsghdr *cmsg;
ssize_t l;
assert(s);
assert(!s->fdstore);
assert(s->in_notify_queue);
assert(s->server);
assert(s->server->notify_fd >= 0);
/* Store the connection fd in PID 1, so that we get it passed
* in again on next start */
msghdr.msg_controllen = CMSG_SPACE(sizeof(int));
msghdr.msg_control = alloca0(msghdr.msg_controllen);
cmsg = CMSG_FIRSTHDR(&msghdr);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
memcpy(CMSG_DATA(cmsg), &s->fd, sizeof(int));
l = sendmsg(s->server->notify_fd, &msghdr, MSG_DONTWAIT|MSG_NOSIGNAL);
if (l < 0) {
if (errno == EAGAIN)
return;
log_error_errno(errno, "Failed to send stream file descriptor to service manager: %m");
} else {
log_debug("Successfully sent stream file descriptor to service manager.");
s->fdstore = 1;
}
LIST_REMOVE(stdout_stream_notify_queue, s->server->stdout_streams_notify_queue, s);
s->in_notify_queue = false;
}
