Allow xend configuration via Solaris SMF as well as the config file.

Signed-off-by: John Levon <john.levon@sun.com>

tools/python/xen/lowlevel/scf/scf.c

@@ -0,0 +1,156 @@
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <Python.h>
+
+#include <libscf.h>
+#include <stdio.h>
+
+#define	XEND_FMRI "svc:/system/xen/xend:default"
+#define	XEND_PG "config"
+
+static PyObject *scf_exc;
+
+static void *
+scf_exception(const char *err, const char *value)
+{
+	int scferr = scf_error();
+	const char *scfstrerr = scf_strerror(scferr);
+	PyObject *obj = Py_BuildValue("(isss)", scferr, err, scfstrerr, value);
+	PyErr_SetObject(scf_exc, obj);
+	return (NULL);
+}
+
+static PyObject *
+pyscf_get_bool(PyObject *o, PyObject *args, PyObject *kwargs)
+{
+	static char *kwlist[] = { "name", NULL };
+	scf_simple_prop_t *prop;
+	uint8_t *val;
+	char *name;
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", kwlist, &name))
+		return (NULL);
+
+	prop = scf_simple_prop_get(NULL, XEND_FMRI, XEND_PG, name);
+
+	if (prop == NULL)
+		return (scf_exception("scf_simple_prop_get() failed", name));
+
+	if ((val = scf_simple_prop_next_boolean(prop)) == NULL)
+		return (scf_exception("scf_simple_prop_next_boolean() failed",
+		    name));
+
+	if (*val) {
+		scf_simple_prop_free(prop);
+		Py_INCREF(Py_True);
+		return (Py_True);
+	}
+
+	scf_simple_prop_free(prop);
+	Py_INCREF(Py_False);
+	return (Py_False);
+}
+
+static PyObject *
+pyscf_get_int(PyObject *o, PyObject *args, PyObject *kwargs)
+{
+	static char *kwlist[] = { "name", NULL };
+	scf_simple_prop_t *prop;
+	PyObject *obj;
+	int64_t *val;
+	char *name;
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", kwlist, &name))
+		return (NULL);
+
+	prop = scf_simple_prop_get(NULL, XEND_FMRI, XEND_PG, name);
+
+	if (prop == NULL)
+		return (scf_exception("scf_simple_prop_get() failed", name));
+
+	if ((val = scf_simple_prop_next_integer(prop)) == NULL)
+		return (scf_exception("scf_simple_prop_next_integer() failed",
+		    name));
+
+	obj = PyInt_FromLong((long)*val);
+	scf_simple_prop_free(prop);
+	return (obj);
+}
+
+static PyObject *
+pyscf_get_string(PyObject *o, PyObject *args, PyObject *kwargs)
+{
+	static char *kwlist[] = { "name", NULL };
+	scf_simple_prop_t *prop;
+	PyObject *obj;
+	char *name;
+	char *str;
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", kwlist, &name))
+		return (NULL);
+
+	prop = scf_simple_prop_get(NULL, XEND_FMRI, XEND_PG, name);
+
+	if (prop == NULL)
+		return (scf_exception("scf_simple_prop_get() failed", name));
+
+	if ((str = scf_simple_prop_next_astring(prop)) == NULL) {
+		scf_simple_prop_free(prop);
+		return (scf_exception("scf_simple_prop_next_astring() failed",
+		    name));
+	}
+
+	obj = PyString_FromString(str);
+	scf_simple_prop_free(prop);
+	return (obj);
+}
+
+PyDoc_STRVAR(pyscf_get_bool__doc__,
+   "get_bool(name) - get the value of the named boolean property");
+PyDoc_STRVAR(pyscf_get_int__doc__,
+   "get_int(name) - get the value of the named integer property");
+PyDoc_STRVAR(pyscf_get_string__doc__,
+   "get_string(name) - get the value of the named string property");
+
+static struct PyMethodDef pyscf_module_methods[] = {
+	{ "get_bool", (PyCFunction) pyscf_get_bool,
+	  METH_VARARGS|METH_KEYWORDS, pyscf_get_bool__doc__ },
+	{ "get_int", (PyCFunction) pyscf_get_int,
+	  METH_VARARGS|METH_KEYWORDS, pyscf_get_int__doc__ },
+	{ "get_string", (PyCFunction) pyscf_get_string,
+	  METH_VARARGS|METH_KEYWORDS, pyscf_get_string__doc__ },
+	{ NULL, NULL, 0, NULL }	
+};
+
+PyMODINIT_FUNC
+initscf(void)
+{
+	PyObject *m;
+	m = Py_InitModule("scf", pyscf_module_methods);
+
+	scf_exc = PyErr_NewException("scf.error", NULL, NULL);
+	Py_INCREF(scf_exc);
+	PyModule_AddObject(m, "error", scf_exc);
+	PyModule_AddIntConstant(m, "SCF_ERROR_NOT_FOUND", SCF_ERROR_NOT_FOUND);
+}