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/*
* openvz_util.c: core driver methods for managing OpenVZ VEs
*
* Copyright (C) 2013-2014 Red Hat, Inc.
* Copyright (C) 2012 Guido Günther
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <config.h>
#include <unistd.h>
#include "internal.h"
#include "virerror.h"
#include "vircommand.h"
#include "datatypes.h"
#include "openvz_conf.h"
#include "openvz_util.h"
#include "virutil.h"
#define VIR_FROM_THIS VIR_FROM_OPENVZ
long
openvzKBPerPages(void)
{
static long kb_per_pages;
if (kb_per_pages == 0) {
if ((kb_per_pages = virGetSystemPageSizeKB()) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Can't determine page size"));
kb_per_pages = 0;
return -1;
}
}
return kb_per_pages;
}
char*
openvzVEGetStringParam(virDomainPtr domain, const char* param)
{
int len;
g_autofree char *output = NULL;
g_autoptr(virCommand) cmd = virCommandNewArgList(VZLIST,
"-o",
param,
domain->name,
"-H", NULL);
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
return NULL;
/* delete trailing newline */
len = strlen(output);
if (len && output[len - 1] == '\n')
output[len - 1] = '\0';
return g_steal_pointer(&output);
}
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