int rpc_join(const char * sockname)
{
if(!load_symbols_rpc())
return -1;
struct sockaddr_un addr;
int conn_err = -1, attempts = 0;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, sockname, sizeof(addr.sun_path)-1);
int sock;
if((sock = realsocket(AF_UNIX, SOCK_STREAM, 0)) < 0){
fprintf(stderr, "Error while creating RPC socket\n");
return -1;
}
while((conn_err != 0) && (attempts < SERVICE_CONNECT_ATTEMPTS)){
if((conn_err = realconnect(sock, (struct sockaddr*)&addr, sizeof(addr))) != 0) {
fprintf(stderr, "Error while connecting to RPC socket. Re-attempting...\n");
sleep(1);
}
else
return sock;
attempts++;
}
return -1;
}
int socket(int domain,
int type,
int protocol)
{
init_syms();
if (getenv("LIBVIRT_TEST_IPV4ONLY") && domain == AF_INET6) {
errno = EAFNOSUPPORT;
return -1;
}
return realsocket(domain, type, protocol);
}
/**
* @brief socket - create an endpoint for communication
*
* This function intercepts the real libc() socket() function and
* checks if for the current executable a firewall mark needs to be
* set on the socket.
*
*/
int socket(int domain, int type, int protocol)
{
int s;
if (!realsocket) {
errno = ENFILE;
return -1;
}
s= realsocket(domain, type, protocol);
if (s != -1 && (domain == AF_INET || domain == AF_INET6) && hook)
if (setsockopt(s, SOL_SOCKET, SO_MARK, val, sizeof(*val)) < 0)
perror("setsockopt");
return s;
}
static void init_syms(void)
{
int fd;
if (realsocket)
return;
realsocket = dlsym(RTLD_NEXT, "socket");
if (!realsocket) {
VIR_TEST_DEBUG("Unable to find 'socket' symbol\n");
abort();
}
fd = realsocket(AF_INET6, SOCK_STREAM, 0);
if (fd < 0)
return;
host_has_ipv6 = true;
VIR_FORCE_CLOSE(fd);
}
