Exemple #1
0
int zmq::ctx_t::get_vmci_socket_family ()
{
    zmq::scoped_lock_t locker(vmci_sync);

    if (vmci_fd == -1)  {
        vmci_family = VMCISock_GetAFValueFd (&vmci_fd);

        if (vmci_fd != -1) {
#ifdef FD_CLOEXEC
            int rc = fcntl (vmci_fd, F_SETFD, FD_CLOEXEC);
            errno_assert (rc != -1);
#endif
        }
    }

    return vmci_family;
}
Exemple #2
0
SOCKET
Socket_ConnectVMCI(unsigned int cid,                  // IN
                   unsigned int port,                 // IN
                   gboolean isPriv,                   // IN
                   SockConnError *outError)           // OUT
{
   struct sockaddr_vm addr;
   SOCKET fd;
   SockConnError error = SOCKERR_GENERIC;
   int sysErr;
   socklen_t addrLen = sizeof addr;
   int vsockDev = -1;
   int family = VMCISock_GetAFValueFd(&vsockDev);

   if (outError) {
      *outError = SOCKERR_SUCCESS;
   }

   if (!SocketStartup()) {
      goto error;
   }

   if (family == -1) {
      Warning(LGPFX "Couldn't get VMCI socket family info.");
      goto error;
   }

   memset((char *)&addr, 0, sizeof addr);
   addr.svm_family = family;
   addr.svm_cid = cid;
   addr.svm_port = port;

   Debug(LGPFX "creating new socket, connecting to %u:%u\n", cid, port);

   fd = socket(addr.svm_family, SOCK_STREAM, 0);
   if (fd == INVALID_SOCKET) {
      sysErr = SocketGetLastError();
      Warning(LGPFX "failed to create socket, error %d: %s\n",
              sysErr, Err_Errno2String(sysErr));
      goto error;
   }

   if (isPriv) {
      struct sockaddr_vm localAddr;
      gboolean bindOk = FALSE;
      int localPort;

      memset(&localAddr, 0, sizeof localAddr);
      localAddr.svm_family = addr.svm_family;
      localAddr.svm_cid = VMCISock_GetLocalCID();

      /* Try to bind to port 1~1023 for a privileged user. */
      for (localPort = PRIVILEGED_PORT_MAX;
           localPort >= PRIVILEGED_PORT_MIN; localPort--) {

         localAddr.svm_port = localPort;

         if (bind(fd, (struct sockaddr *)&localAddr, sizeof localAddr) != 0) {
            sysErr = SocketGetLastError();
            if (sysErr == SYSERR_EACCESS) {
               Warning(LGPFX "Couldn't bind to privileged port for "
                       "socket %d\n", fd);
               error = SOCKERR_EACCESS;
               Socket_Close(fd);
               goto error;
            }
            if (sysErr == SYSERR_EADDRINUSE) {
               continue;
            }
            Warning(LGPFX "could not bind socket, error %d: %s\n", sysErr,
                    Err_Errno2String(sysErr));
            Socket_Close(fd);
            error = SOCKERR_BIND;
            goto error;
         } else {
            bindOk = TRUE;
            break;
         }
      }

      if (!bindOk) {
         Warning(LGPFX "Failed to bind to privileged port for socket %d, "
                 "no port available\n", fd);
         error = SOCKERR_BIND;
         Socket_Close(fd);
         goto error;
      } else {
         Debug(LGPFX "Successfully bound to port %d for socket %d\n",
               localAddr.svm_port, fd);
      }
   }

   if (connect(fd, (struct sockaddr *)&addr, addrLen) != 0) {
      sysErr = SocketGetLastError();
      Warning(LGPFX "socket connect failed, error %d: %s\n",
              sysErr, Err_Errno2String(sysErr));
      Socket_Close(fd);
      error = SOCKERR_CONNECT;
      goto error;
   }

   VMCISock_ReleaseAFValueFd(vsockDev);
   Debug(LGPFX "socket %d connected\n", fd);
   return fd;

error:
   if (outError) {
      *outError = error;
   }
   VMCISock_ReleaseAFValueFd(vsockDev);

   return INVALID_SOCKET;
}