gistfile1.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>

int main(int argc, char **argv)
{
	inquiry_info *ii = NULL;
	int max_rsp, num_rsp;
	int dev_id, sock, len, flags;
	int i;
	char addr[19] = { 0 };
	char name[248] = { 0 };

	dev_id = hci_get_route(NULL);
	sock = hci_open_dev( dev_id );
	if (dev_id < 0 || sock < 0) {
		perror("opening socket");
		exit(1);
	}

	len = 8;
	max_rsp = 255;
	flags = IREQ_CACHE_FLUSH;
	ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));

	num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
	if ( num_rsp < 0 ) perror("hci_inquiry");

	for ( i = 0; i < num_rsp; i++) {
		ba2str(&(ii+i)->bdaddr, addr);
		memset(name, 0, sizeof(name));
		if ( hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name),
			name, 0) < 0)
		strcpy(name, "[unknown]");
		printf("%s %s\n", addr, name);
	}

	free( ii );
	close( sock );
	return 0;
}