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libvirt/tools/virsh-completer-host.c

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/*
* virsh-completer-host.c: virsh completer callbacks related to host
*
* Copyright (C) 2019 Red Hat, Inc.
*
* 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 "virsh-completer-host.h"
#include "viralloc.h"
#include "virsh.h"
#include "virstring.h"
#include "virxml.h"
#include "virutil.h"
static char *
virshPagesizeNodeToString(xmlNodePtr node)
{
g_autofree char *pagesize = NULL;
g_autofree char *unit = NULL;
unsigned long long byteval = 0;
const char *suffix = NULL;
double size = 0;
char *ret;
pagesize = virXMLPropString(node, "size");
unit = virXMLPropString(node, "unit");
if (virStrToLong_ull(pagesize, NULL, 10, &byteval) < 0)
return NULL;
if (virScaleInteger(&byteval, unit, 1024, UINT_MAX) < 0)
return NULL;
size = vshPrettyCapacity(byteval, &suffix);
ret = g_strdup_printf("%.0f%s", size, suffix);
return ret;
}
char **
virshAllocpagesPagesizeCompleter(vshControl *ctl,
const vshCmd *cmd G_GNUC_UNUSED,
unsigned int flags)
{
g_autoptr(xmlXPathContext) ctxt = NULL;
virshControlPtr priv = ctl->privData;
unsigned int npages = 0;
g_autofree xmlNodePtr *pages = NULL;
g_autoptr(xmlDoc) doc = NULL;
size_t i = 0;
const char *cellnum = NULL;
bool cellno = vshCommandOptBool(cmd, "cellno");
g_autofree char *path = NULL;
g_autofree char *cap_xml = NULL;
VIR_AUTOSTRINGLIST tmp = NULL;
virCheckFlags(0, NULL);
if (!priv->conn || virConnectIsAlive(priv->conn) <= 0)
return NULL;
if (!(cap_xml = virConnectGetCapabilities(priv->conn)))
return NULL;
if (!(doc = virXMLParseStringCtxt(cap_xml, _("capabilities"), &ctxt)))
return NULL;
if (cellno && vshCommandOptStringQuiet(ctl, cmd, "cellno", &cellnum) > 0) {
path = g_strdup_printf("/capabilities/host/topology/cells/cell[@id=\"%s\"]/pages",
cellnum);
} else {
path = g_strdup("/capabilities/host/cpu/pages");
}
npages = virXPathNodeSet(path, ctxt, &pages);
if (npages <= 0)
return NULL;
if (VIR_ALLOC_N(tmp, npages + 1) < 0)
return NULL;
for (i = 0; i < npages; i++) {
if (!(tmp[i] = virshPagesizeNodeToString(pages[i])))
return NULL;
}
return g_steal_pointer(&tmp);
}
char **
virshCellnoCompleter(vshControl *ctl,
const vshCmd *cmd G_GNUC_UNUSED,
unsigned int flags)
{
g_autoptr(xmlXPathContext) ctxt = NULL;
virshControlPtr priv = ctl->privData;
unsigned int ncells = 0;
g_autofree xmlNodePtr *cells = NULL;
g_autoptr(xmlDoc) doc = NULL;
size_t i = 0;
g_autofree char *cap_xml = NULL;
VIR_AUTOSTRINGLIST tmp = NULL;
virCheckFlags(0, NULL);
if (!priv->conn || virConnectIsAlive(priv->conn) <= 0)
return NULL;
if (!(cap_xml = virConnectGetCapabilities(priv->conn)))
return NULL;
if (!(doc = virXMLParseStringCtxt(cap_xml, _("capabilities"), &ctxt)))
return NULL;
ncells = virXPathNodeSet("/capabilities/host/topology/cells/cell", ctxt, &cells);
if (ncells <= 0)
return NULL;
if (VIR_ALLOC_N(tmp, ncells + 1))
return NULL;
for (i = 0; i < ncells; i++) {
if (!(tmp[i] = virXMLPropString(cells[i], "id")))
return NULL;
}
return g_steal_pointer(&tmp);
}