/* libxenstat: statistics-collection library for Xen * Copyright (C) International Business Machines Corp., 2005 * Authors: Josh Triplett <josht@us.ibm.com> *          Judy Fischbach <jfisch@us.ibm.com> *          David Hendricks <dhendrix@us.ibm.com> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. *//* * Copyright 2007 Sun Microsystems, Inc.  All rights reserved. * Use is subject to license terms. */#include <fcntl.h>#include <dirent.h>#include <sys/types.h>#include <sys/stat.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include "xenstat_priv.h"#define SYSFS_VBD_PATH "/sys/devices/xen-backend/"struct priv_data {	FILE *procnetdev;	DIR *sysfsvbd;};static struct priv_data *get_priv_data(xenstat_handle *handle){	if (handle->priv != NULL)		return handle->priv;	handle->priv = malloc(sizeof(struct priv_data));	if (handle->priv == NULL)		return (NULL);	((struct priv_data *)handle->priv)->procnetdev = NULL;	((struct priv_data *)handle->priv)->sysfsvbd = NULL;	return handle->priv;}/* Expected format of /proc/net/dev */static const char PROCNETDEV_HEADER[] =    "Inter-|   Receive                                                |"    "  Transmit\n"    " face |bytes    packets errs drop fifo frame compressed multicast|"    "bytes    packets errs drop fifo colls carrier compressed\n";/* Collect information about networks */int xenstat_collect_networks(xenstat_node * node){	/* XXX fixme: implement code to get stats from libkvm ! */	return 1;}/* Free network information in handle */void xenstat_uninit_networks(xenstat_handle * handle){	struct priv_data *priv = get_priv_data(handle);	if (priv != NULL && priv->procnetdev != NULL)		fclose(priv->procnetdev);}static int read_attributes_vbd(const char *vbd_directory, const char *what, char *ret, int cap){	/* XXX implement */	return 0;}/* Collect information about VBDs */int xenstat_collect_vbds(xenstat_node * node){	return 1;	}/* Free VBD information in handle */void xenstat_uninit_vbds(xenstat_handle * handle){	struct priv_data *priv = get_priv_data(handle);	if (priv != NULL && priv->sysfsvbd != NULL)		closedir(priv->sysfsvbd);}