/*
* Embed rtnetlink socket into ni_socket_t and set ifevent handler
*/
int
ni_server_listen_interface_events(void (*ifevent_handler)(ni_netdev_t *, ni_event_t))
{
ni_rtevent_handle_t *handle;
unsigned int family;
if (__ni_rtevent_sock || ni_global.interface_event) {
ni_error("Interface event handler is already set");
return -1;
}
if (!(__ni_rtevent_sock = __ni_rtevent_sock_open()))
return -1;
family = ni_netconfig_get_family_filter(ni_global_state_handle(0));
handle = __ni_rtevent_sock->user_data;
/* TODO: Move IPv6 info to separate function, dhcp4 does not need it */
if (!__ni_rtevent_join_group(handle, RTNLGRP_LINK) ||
(family != AF_INET &&
!__ni_rtevent_join_group(handle, RTNLGRP_IPV6_IFINFO))) {
ni_socket_release(__ni_rtevent_sock);
__ni_rtevent_sock = NULL;
return -1;
}
ni_global.interface_event = ifevent_handler;
ni_socket_activate(__ni_rtevent_sock);
return 0;
}
/*
* Run a subprocess.
*/
int
ni_process_run(ni_process_t *pi)
{
int pfd[2], rv;
/* Our code in socket.c is only able to deal with sockets for now; */
if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) < 0) {
ni_error("%s: unable to create pipe: %m", __func__);
return -1;
}
rv = __ni_process_run(pi, pfd);
if (rv >= 0) {
/* Set up a socket to receive the redirected output of the
* subprocess. */
pi->socket = __ni_process_get_output(pi, pfd[0]);
ni_socket_activate(pi->socket);
close(pfd[1]);
} else {
if (pfd[0] >= 0)
close(pfd[0]);
if (pfd[1] >= 0)
close(pfd[1]);
}
return rv;
}
static ni_bool_t
__ni_rtevent_restart(ni_socket_t *sock)
{
ni_rtevent_handle_t *handle = sock->user_data;
if (handle) {
if ((__ni_rtevent_sock = __ni_rtevent_sock_open())) {
const ni_uint_array_t *groups = &handle->groups;
unsigned int i;
handle = __ni_rtevent_sock->user_data;
for (i = 0; i < groups->count; ++i) {
__ni_rtevent_join_group(handle, groups->data[i]);
}
ni_socket_activate(__ni_rtevent_sock);
return TRUE;
}
ni_socket_release(sock);
}
return FALSE;
}
