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The libvirt coding standard is to use 'function(...args...)' instead of 'function (...args...)'. A non-trivial number of places did not follow this rule and are fixed in this patch. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
630 lines
17 KiB
C
630 lines
17 KiB
C
/*
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* virsh-nodedev.c: Commands in node device group
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*
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* Copyright (C) 2005, 2007-2012 Red Hat, Inc.
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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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* Daniel Veillard <veillard@redhat.com>
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* Karel Zak <kzak@redhat.com>
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* Daniel P. Berrange <berrange@redhat.com>
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*
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*/
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#include <config.h>
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#include "virsh-nodedev.h"
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include <libxml/xpath.h>
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#include <libxml/xmlsave.h>
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#include "internal.h"
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#include "buf.h"
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#include "memory.h"
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#include "util.h"
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#include "xml.h"
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#include "conf/node_device_conf.h"
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/*
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* "nodedev-create" command
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*/
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static const vshCmdInfo info_node_device_create[] = {
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{"help", N_("create a device defined "
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"by an XML file on the node")},
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{"desc", N_("Create a device on the node. Note that this "
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"command creates devices on the physical host "
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"that can then be assigned to a virtual machine.")},
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_node_device_create[] = {
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{"file", VSH_OT_DATA, VSH_OFLAG_REQ,
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N_("file containing an XML description of the device")},
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{NULL, 0, 0, NULL}
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};
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static bool
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cmdNodeDeviceCreate(vshControl *ctl, const vshCmd *cmd)
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{
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virNodeDevicePtr dev = NULL;
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const char *from = NULL;
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bool ret = true;
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char *buffer;
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if (vshCommandOptString(cmd, "file", &from) <= 0)
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return false;
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if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0)
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return false;
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dev = virNodeDeviceCreateXML(ctl->conn, buffer, 0);
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VIR_FREE(buffer);
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if (dev != NULL) {
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vshPrint(ctl, _("Node device %s created from %s\n"),
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virNodeDeviceGetName(dev), from);
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virNodeDeviceFree(dev);
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} else {
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vshError(ctl, _("Failed to create node device from %s"), from);
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ret = false;
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}
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return ret;
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}
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/*
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* "nodedev-destroy" command
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*/
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static const vshCmdInfo info_node_device_destroy[] = {
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{"help", N_("destroy (stop) a device on the node")},
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{"desc", N_("Destroy a device on the node. Note that this "
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"command destroys devices on the physical host")},
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_node_device_destroy[] = {
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{"name", VSH_OT_DATA, VSH_OFLAG_REQ,
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N_("name of the device to be destroyed")},
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{NULL, 0, 0, NULL}
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};
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static bool
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cmdNodeDeviceDestroy(vshControl *ctl, const vshCmd *cmd)
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{
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virNodeDevicePtr dev = NULL;
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bool ret = true;
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const char *name = NULL;
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if (vshCommandOptString(cmd, "name", &name) <= 0)
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return false;
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dev = virNodeDeviceLookupByName(ctl->conn, name);
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if (virNodeDeviceDestroy(dev) == 0) {
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vshPrint(ctl, _("Destroyed node device '%s'\n"), name);
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} else {
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vshError(ctl, _("Failed to destroy node device '%s'"), name);
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ret = false;
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}
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virNodeDeviceFree(dev);
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return ret;
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}
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struct vshNodeList {
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char **names;
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char **parents;
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};
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static const char *
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vshNodeListLookup(int devid, bool parent, void *opaque)
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{
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struct vshNodeList *arrays = opaque;
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if (parent)
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return arrays->parents[devid];
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return arrays->names[devid];
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}
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static int
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vshNodeDeviceSorter(const void *a, const void *b)
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{
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virNodeDevicePtr *na = (virNodeDevicePtr *) a;
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virNodeDevicePtr *nb = (virNodeDevicePtr *) b;
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if (*na && !*nb)
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return -1;
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if (!*na)
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return *nb != NULL;
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return vshStrcasecmp(virNodeDeviceGetName(*na),
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virNodeDeviceGetName(*nb));
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}
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struct vshNodeDeviceList {
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virNodeDevicePtr *devices;
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size_t ndevices;
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};
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typedef struct vshNodeDeviceList *vshNodeDeviceListPtr;
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static void
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vshNodeDeviceListFree(vshNodeDeviceListPtr list)
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{
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int i;
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if (list && list->ndevices) {
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for (i = 0; i < list->ndevices; i++) {
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if (list->devices[i])
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virNodeDeviceFree(list->devices[i]);
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}
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VIR_FREE(list->devices);
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}
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VIR_FREE(list);
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}
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static vshNodeDeviceListPtr
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vshNodeDeviceListCollect(vshControl *ctl,
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char **capnames,
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int ncapnames,
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unsigned int flags)
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{
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vshNodeDeviceListPtr list = vshMalloc(ctl, sizeof(*list));
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int i;
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int ret;
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virNodeDevicePtr device;
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bool success = false;
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size_t deleted = 0;
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int ndevices = 0;
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char **names = NULL;
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/* try the list with flags support (0.10.2 and later) */
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if ((ret = virConnectListAllNodeDevices(ctl->conn,
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&list->devices,
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flags)) >= 0) {
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list->ndevices = ret;
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goto finished;
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}
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/* check if the command is actually supported */
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if (last_error && last_error->code == VIR_ERR_NO_SUPPORT)
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goto fallback;
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/* there was an error during the call */
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vshError(ctl, "%s", _("Failed to list node devices"));
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goto cleanup;
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fallback:
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/* fall back to old method (0.10.1 and older) */
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vshResetLibvirtError();
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ndevices = virNodeNumOfDevices(ctl->conn, NULL, 0);
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if (ndevices < 0) {
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vshError(ctl, "%s", _("Failed to count node devices"));
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goto cleanup;
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}
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if (ndevices == 0)
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return list;
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names = vshMalloc(ctl, sizeof(char *) * ndevices);
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ndevices = virNodeListDevices(ctl->conn, NULL, names, ndevices, 0);
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if (ndevices < 0) {
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vshError(ctl, "%s", _("Failed to list node devices"));
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goto cleanup;
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}
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list->devices = vshMalloc(ctl, sizeof(virNodeDevicePtr) * (ndevices));
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list->ndevices = 0;
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/* get the node devices */
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for (i = 0; i < ndevices ; i++) {
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if (!(device = virNodeDeviceLookupByName(ctl->conn, names[i])))
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continue;
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list->devices[list->ndevices++] = device;
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}
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/* truncate domains that weren't found */
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deleted = ndevices - list->ndevices;
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if (!capnames)
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goto finished;
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/* filter the list if the list was acquired by fallback means */
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for (i = 0; i < list->ndevices; i++) {
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char **caps = NULL;
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int ncaps = 0;
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bool match = false;
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device = list->devices[i];
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if ((ncaps = virNodeDeviceNumOfCaps(device)) < 0) {
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vshError(ctl, "%s", _("Failed to get capability numbers "
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"of the device"));
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goto cleanup;
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}
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caps = vshMalloc(ctl, sizeof(char *) * ncaps);
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if ((ncaps = virNodeDeviceListCaps(device, caps, ncaps)) < 0) {
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vshError(ctl, "%s", _("Failed to get capability names of the device"));
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VIR_FREE(caps);
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goto cleanup;
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}
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/* Check if the device's capability matches with provied
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* capabilities.
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*/
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int j, k;
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for (j = 0; j < ncaps; j++) {
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for (k = 0; k < ncapnames; k++) {
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if (STREQ(caps[j], capnames[k])) {
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match = true;
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break;
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}
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}
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}
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VIR_FREE(caps);
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if (!match)
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goto remove_entry;
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/* the device matched all filters, it may stay */
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continue;
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remove_entry:
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/* the device has to be removed as it failed one of the filters */
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virNodeDeviceFree(list->devices[i]);
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list->devices[i] = NULL;
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deleted++;
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}
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finished:
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/* sort the list */
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if (list->devices && list->ndevices)
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qsort(list->devices, list->ndevices,
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sizeof(*list->devices), vshNodeDeviceSorter);
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/* truncate the list if filter simulation deleted entries */
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if (deleted)
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VIR_SHRINK_N(list->devices, list->ndevices, deleted);
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success = true;
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cleanup:
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for (i = 0; i < ndevices; i++)
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VIR_FREE(names[i]);
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VIR_FREE(names);
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if (!success) {
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vshNodeDeviceListFree(list);
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list = NULL;
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}
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return list;
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}
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/*
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* "nodedev-list" command
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*/
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static const vshCmdInfo info_node_list_devices[] = {
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{"help", N_("enumerate devices on this host")},
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{"desc", ""},
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_node_list_devices[] = {
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{"tree", VSH_OT_BOOL, 0, N_("list devices in a tree")},
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{"cap", VSH_OT_STRING, VSH_OFLAG_NONE, N_("capability names, separated by comma")},
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{NULL, 0, 0, NULL}
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};
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static bool
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cmdNodeListDevices(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
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{
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const char *cap_str = NULL;
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int i;
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bool tree = vshCommandOptBool(cmd, "tree");
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bool ret = true;
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unsigned int flags = 0;
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char **caps = NULL;
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int ncaps = 0;
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vshNodeDeviceListPtr list = NULL;
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int cap_type = -1;
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ignore_value(vshCommandOptString(cmd, "cap", &cap_str));
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if (cap_str) {
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if (tree) {
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vshError(ctl, "%s", _("Options --tree and --cap are incompatible"));
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return false;
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}
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ncaps = vshStringToArray(cap_str, &caps);
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}
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for (i = 0; i < ncaps; i++) {
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if ((cap_type = virNodeDevCapTypeFromString(caps[i])) < 0) {
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vshError(ctl, "%s", _("Invalid capability type"));
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VIR_FREE(caps);
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return false;
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}
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switch (cap_type) {
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case VIR_NODE_DEV_CAP_SYSTEM:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM;
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break;
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case VIR_NODE_DEV_CAP_PCI_DEV:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV;
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break;
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case VIR_NODE_DEV_CAP_USB_DEV:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV;
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break;
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case VIR_NODE_DEV_CAP_USB_INTERFACE:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE;
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break;
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case VIR_NODE_DEV_CAP_NET:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET;
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break;
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case VIR_NODE_DEV_CAP_SCSI_HOST:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST;
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break;
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case VIR_NODE_DEV_CAP_SCSI_TARGET:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET;
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break;
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case VIR_NODE_DEV_CAP_SCSI:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI;
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break;
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case VIR_NODE_DEV_CAP_STORAGE:
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flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE;
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break;
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default:
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break;
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}
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}
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if (!(list = vshNodeDeviceListCollect(ctl, caps, ncaps, flags))) {
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ret = false;
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goto cleanup;
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}
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if (tree) {
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char **parents = vshMalloc(ctl, sizeof(char *) * list->ndevices);
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char **names = vshMalloc(ctl, sizeof(char *) * list->ndevices);
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struct vshNodeList arrays = { names, parents };
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for (i = 0; i < list->ndevices; i++)
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names[i] = vshStrdup(ctl, virNodeDeviceGetName(list->devices[i]));
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for (i = 0; i < list->ndevices; i++) {
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virNodeDevicePtr dev = list->devices[i];
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if (STRNEQ(names[i], "computer")) {
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const char *parent = virNodeDeviceGetParent(dev);
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parents[i] = parent ? vshStrdup(ctl, parent) : NULL;
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} else {
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parents[i] = NULL;
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}
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}
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for (i = 0 ; i < list->ndevices; i++) {
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if (parents[i] == NULL &&
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vshTreePrint(ctl, vshNodeListLookup, &arrays,
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list->ndevices, i) < 0)
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ret = false;
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}
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for (i = 0 ; i < list->ndevices; i++)
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VIR_FREE(parents[i]);
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VIR_FREE(parents);
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for (i = 0; i < list->ndevices; i++)
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VIR_FREE(names[i]);
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VIR_FREE(names);
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} else {
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for (i = 0; i < list->ndevices; i++)
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vshPrint(ctl, "%s\n", virNodeDeviceGetName(list->devices[i]));
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}
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cleanup:
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if (caps) {
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VIR_FREE(*caps);
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VIR_FREE(caps);
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}
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vshNodeDeviceListFree(list);
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return ret;
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}
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/*
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* "nodedev-dumpxml" command
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*/
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static const vshCmdInfo info_node_device_dumpxml[] = {
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{"help", N_("node device details in XML")},
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{"desc", N_("Output the node device details as an XML dump to stdout.")},
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_node_device_dumpxml[] = {
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{"device", VSH_OT_DATA, VSH_OFLAG_REQ, N_("device key")},
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{NULL, 0, 0, NULL}
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};
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static bool
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cmdNodeDeviceDumpXML(vshControl *ctl, const vshCmd *cmd)
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{
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const char *name = NULL;
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virNodeDevicePtr device;
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char *xml;
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if (vshCommandOptString(cmd, "device", &name) <= 0)
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return false;
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if (!(device = virNodeDeviceLookupByName(ctl->conn, name))) {
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vshError(ctl, "%s '%s'", _("Could not find matching device"), name);
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return false;
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}
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xml = virNodeDeviceGetXMLDesc(device, 0);
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if (!xml) {
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virNodeDeviceFree(device);
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return false;
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}
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vshPrint(ctl, "%s\n", xml);
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VIR_FREE(xml);
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virNodeDeviceFree(device);
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return true;
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}
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/*
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* "nodedev-detach" command
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*/
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static const vshCmdInfo info_node_device_detach[] = {
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{"help", N_("detach node device from its device driver")},
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{"desc", N_("Detach node device from its device driver before assigning to a domain.")},
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_node_device_detach[] = {
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{"device", VSH_OT_DATA, VSH_OFLAG_REQ, N_("device key")},
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{NULL, 0, 0, NULL}
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};
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static bool
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cmdNodeDeviceDetach(vshControl *ctl, const vshCmd *cmd)
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{
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const char *name = NULL;
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virNodeDevicePtr device;
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bool ret = true;
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if (vshCommandOptString(cmd, "device", &name) <= 0)
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return false;
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if (!(device = virNodeDeviceLookupByName(ctl->conn, name))) {
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vshError(ctl, "%s '%s'", _("Could not find matching device"), name);
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return false;
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}
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/* Yes, our public API is misspelled. At least virsh can accept
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* either spelling. */
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if (virNodeDeviceDettach(device) == 0) {
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vshPrint(ctl, _("Device %s detached\n"), name);
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} else {
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vshError(ctl, _("Failed to detach device %s"), name);
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ret = false;
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}
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virNodeDeviceFree(device);
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return ret;
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}
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/*
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* "nodedev-reattach" command
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*/
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static const vshCmdInfo info_node_device_reattach[] = {
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{"help", N_("reattach node device to its device driver")},
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|
{"desc", N_("Reattach node device to its device driver once released by the domain.")},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
|
|
static const vshCmdOptDef opts_node_device_reattach[] = {
|
|
{"device", VSH_OT_DATA, VSH_OFLAG_REQ, N_("device key")},
|
|
{NULL, 0, 0, NULL}
|
|
};
|
|
|
|
static bool
|
|
cmdNodeDeviceReAttach(vshControl *ctl, const vshCmd *cmd)
|
|
{
|
|
const char *name = NULL;
|
|
virNodeDevicePtr device;
|
|
bool ret = true;
|
|
|
|
if (vshCommandOptString(cmd, "device", &name) <= 0)
|
|
return false;
|
|
if (!(device = virNodeDeviceLookupByName(ctl->conn, name))) {
|
|
vshError(ctl, "%s '%s'", _("Could not find matching device"), name);
|
|
return false;
|
|
}
|
|
|
|
if (virNodeDeviceReAttach(device) == 0) {
|
|
vshPrint(ctl, _("Device %s re-attached\n"), name);
|
|
} else {
|
|
vshError(ctl, _("Failed to re-attach device %s"), name);
|
|
ret = false;
|
|
}
|
|
virNodeDeviceFree(device);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* "nodedev-reset" command
|
|
*/
|
|
static const vshCmdInfo info_node_device_reset[] = {
|
|
{"help", N_("reset node device")},
|
|
{"desc", N_("Reset node device before or after assigning to a domain.")},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
|
|
static const vshCmdOptDef opts_node_device_reset[] = {
|
|
{"device", VSH_OT_DATA, VSH_OFLAG_REQ, N_("device key")},
|
|
{NULL, 0, 0, NULL}
|
|
};
|
|
|
|
static bool
|
|
cmdNodeDeviceReset(vshControl *ctl, const vshCmd *cmd)
|
|
{
|
|
const char *name = NULL;
|
|
virNodeDevicePtr device;
|
|
bool ret = true;
|
|
|
|
if (vshCommandOptString(cmd, "device", &name) <= 0)
|
|
return false;
|
|
if (!(device = virNodeDeviceLookupByName(ctl->conn, name))) {
|
|
vshError(ctl, "%s '%s'", _("Could not find matching device"), name);
|
|
return false;
|
|
}
|
|
|
|
if (virNodeDeviceReset(device) == 0) {
|
|
vshPrint(ctl, _("Device %s reset\n"), name);
|
|
} else {
|
|
vshError(ctl, _("Failed to reset device %s"), name);
|
|
ret = false;
|
|
}
|
|
virNodeDeviceFree(device);
|
|
return ret;
|
|
}
|
|
|
|
const vshCmdDef nodedevCmds[] = {
|
|
{"nodedev-create", cmdNodeDeviceCreate, opts_node_device_create,
|
|
info_node_device_create, 0},
|
|
{"nodedev-destroy", cmdNodeDeviceDestroy, opts_node_device_destroy,
|
|
info_node_device_destroy, 0},
|
|
{"nodedev-detach", cmdNodeDeviceDetach, opts_node_device_detach,
|
|
info_node_device_detach, 0},
|
|
{"nodedev-dettach", cmdNodeDeviceDetach, opts_node_device_detach,
|
|
info_node_device_detach, VSH_CMD_FLAG_ALIAS},
|
|
{"nodedev-dumpxml", cmdNodeDeviceDumpXML, opts_node_device_dumpxml,
|
|
info_node_device_dumpxml, 0},
|
|
{"nodedev-list", cmdNodeListDevices, opts_node_list_devices,
|
|
info_node_list_devices, 0},
|
|
{"nodedev-reattach", cmdNodeDeviceReAttach, opts_node_device_reattach,
|
|
info_node_device_reattach, 0},
|
|
{"nodedev-reset", cmdNodeDeviceReset, opts_node_device_reset,
|
|
info_node_device_reset, 0},
|
|
{NULL, NULL, NULL, NULL, 0}
|
|
};
|