1.1 --- a/tools/python/xen/lowlevel/acm/acm.c	Tue Jan 02 13:04:01 2007 +0000
     1.2 +++ b/tools/python/xen/lowlevel/acm/acm.c	Tue Jan 02 13:32:35 2007 +0000
     1.3 @@ -35,6 +35,8 @@
     1.4  fprintf(stderr, "ERROR: " _m " (%d = %s)\n" , ## _a ,    \
     1.5      errno, strerror(errno))
     1.6  
     1.7 +static PyObject *acm_error_obj;
     1.8 +
     1.9  /* generic shared function */
    1.10  void * __getssid(int domid, uint32_t *buflen)
    1.11  {
    1.12 @@ -80,28 +82,26 @@ static PyObject *policy(PyObject * self,
    1.13  {
    1.14      /* out */
    1.15      char *policyreference;
    1.16 -    PyObject *ret = NULL;
    1.17 +    PyObject *ret;
    1.18      void *ssid_buffer;
    1.19      uint32_t buf_len;
    1.20  
    1.21      if (!PyArg_ParseTuple(args, "", NULL)) {
    1.22 -    goto out1;
    1.23 +        return NULL;
    1.24      }
    1.25      ssid_buffer =  __getssid(0, &buf_len);
    1.26 -    if (ssid_buffer == NULL) {
    1.27 -        goto out1;
    1.28 -    } else if (buf_len < sizeof(struct acm_ssid_buffer)) {
    1.29 -        goto out2;
    1.30 -    } else {
    1.31 +    if (ssid_buffer == NULL || buf_len < sizeof(struct acm_ssid_buffer)) {
    1.32 +        free(ssid_buffer);
    1.33 +        return PyErr_SetFromErrno(acm_error_obj);
    1.34 +    }
    1.35 +    else {
    1.36          struct acm_ssid_buffer *ssid = (struct acm_ssid_buffer *)ssid_buffer;
    1.37          policyreference = (char *)(ssid_buffer + ssid->policy_reference_offset
    1.38                         + sizeof (struct acm_policy_reference_buffer));
    1.39 +        ret = Py_BuildValue("s", policyreference);
    1.40 +        free(ssid_buffer);
    1.41 +        return ret;
    1.42      }
    1.43 -    ret = Py_BuildValue("s", policyreference);
    1.44 - out2:
    1.45 -    free(ssid_buffer);
    1.46 - out1:
    1.47 -    return ret;
    1.48  }
    1.49  
    1.50  
    1.51 @@ -213,5 +213,8 @@ static PyMethodDef acmMethods[] = {
    1.52  /* inits */
    1.53  PyMODINIT_FUNC initacm(void)
    1.54  {
    1.55 -    Py_InitModule("acm", acmMethods);
    1.56 +    PyObject *m = Py_InitModule("acm", acmMethods);
    1.57 +    acm_error_obj = PyErr_NewException("acm.Error", PyExc_RuntimeError, NULL);
    1.58 +    Py_INCREF(acm_error_obj);
    1.59 +    PyModule_AddObject(m, "Error", acm_error_obj);
    1.60  }