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/* 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);
}
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