void start_uevent_polling()
{
struct sockaddr_nl nls;
struct pollfd pfd;
char uevent_msg[1024];
// Open hotplug event netlink socket
//ALOGI("Starting dongled For UsbModeSwitch Management - Settings:modeswitch.d:%s length:%u debug:%u",hotplug_info.modeswitch_d,hotplug_info.modeswitch_length,hotplug_info.debug);
memset(&nls,0,sizeof(struct sockaddr_nl));
nls.nl_family = AF_NETLINK;
nls.nl_pid = getpid();
nls.nl_groups = -1;
pfd.events = POLLIN;
pfd.fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
if (pfd.fd==-1)
ALOGE("dongled cannot create socket, are you root?\n");
// Listen to netlink socket
if (bind(pfd.fd, (void *)&nls, sizeof(struct sockaddr_nl)))
die("bind failed\n");
ALOGD("Give us a go on your UEVENT");
while (-1!=poll(&pfd, 1, -1)) {
int uevent_buffer_length = recv(pfd.fd, uevent_msg, sizeof(uevent_msg), MSG_DONTWAIT);
if (uevent_buffer_length == -1)
die("receive error\n");
struct uevent uevent;
parse_uevent(uevent_msg, &uevent);
handle_uevent(&uevent);
}
die("poll error\n");
return;
}
int handle_uevent(event_t *event)
{
char msg[UEVENT_MSG_LEN + 2];
int n, ret = 0;
while (true) {
struct uevent uevent;
n = uevent_kernel_multicast_recv(event->uevent_fd, msg, UEVENT_MSG_LEN);
if (n <= 0)
break;
if (n >= UEVENT_MSG_LEN)
continue;
msg[n] = '\0';
msg[n+1] = '\0';
parse_uevent(msg, &uevent);
ret = process_uevent(event, &uevent);
}
return ret;
}
