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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* openvz_driver.c: core driver methods for managing OpenVZ VEs
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*
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* Copyright (C) 2012 Guido Günther
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include <unistd.h>
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#include "internal.h"
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#include "virerror.h"
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#include "vircommand.h"
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#include "datatypes.h"
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#include "viralloc.h"
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#include "openvz_conf.h"
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#include "openvz_util.h"
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#define VIR_FROM_THIS VIR_FROM_OPENVZ
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long
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openvzKBPerPages(void)
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{
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static long kb_per_pages = 0;
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if (kb_per_pages == 0) {
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kb_per_pages = sysconf(_SC_PAGESIZE);
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if (kb_per_pages > 0) {
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kb_per_pages /= 1024;
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} else {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("Can't determine page size"));
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kb_per_pages = 0;
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return -1;
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}
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}
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return kb_per_pages;
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}
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char*
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openvzVEGetStringParam(virDomainPtr domain, const char* param)
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{
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int len;
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char *output = NULL;
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virCommandPtr cmd = virCommandNewArgList(VZLIST,
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"-o",
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param,
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domain->name,
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"-H" , NULL);
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virCommandSetOutputBuffer(cmd, &output);
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if (virCommandRun(cmd, NULL) < 0) {
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VIR_FREE(output);
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/* virCommandRun sets the virError */
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goto cleanup;
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}
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/* delete trailing newline */
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len = strlen(output);
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if (len && output[len - 1] == '\n')
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output[len - 1] = '\0';
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cleanup:
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virCommandFree(cmd);
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return output;
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}
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