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libvirt/tools/virsh-nodedev.c
Jonathon Jongsma 53aec799fa Include vdpa devices in node device list 
The current udev node device driver ignores all events related to vdpa
devices. Since libvirt now supports vDPA network devices, include these
devices in the device list.

Example output:

virsh # nodedev-list
[...ommitted long list of nodedevs...]
vdpa_vdpa0

virsh # nodedev-dumpxml vdpa_vdpa0
<device>
  <name>vdpa_vdpa0</name>
  <path>/sys/devices/vdpa0</path>
  <parent>computer</parent>
  <driver>
    <name>vhost_vdpa</name>
  </driver>
  <capability type='vdpa'>
    <chardev>/dev/vhost-vdpa-0</chardev>
  </capability>
</device>

NOTE: normally the 'parent' would be a PCI device instead of 'computer',
but this example output is from the vdpa_sim kernel module, so it
doesn't have a normal parent device.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2020-10-26 02:39:29 -04:00

1039 lines
28 KiB
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/*
* virsh-nodedev.c: Commands in node device group
*
* Copyright (C) 2005, 2007-2016 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-nodedev.h"
#include "internal.h"
#include "viralloc.h"
#include "virfile.h"
#include "virstring.h"
#include "virtime.h"
#include "conf/node_device_conf.h"
#include "virenum.h"
#include "virutil.h"
/*
* "nodedev-create" command
*/
static const vshCmdInfo info_node_device_create[] = {
{.name = "help",
.data = N_("create a device defined "
"by an XML file on the node")
},
{.name = "desc",
.data = N_("Create a device on the node. Note that this "
"command creates devices on the physical host "
"that can then be assigned to a virtual machine.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_create[] = {
VIRSH_COMMON_OPT_FILE(N_("file containing an XML description "
"of the device")),
{.name = NULL}
};
static bool
cmdNodeDeviceCreate(vshControl *ctl, const vshCmd *cmd)
{
virNodeDevicePtr dev = NULL;
const char *from = NULL;
bool ret = true;
char *buffer;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
return false;
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0)
return false;
dev = virNodeDeviceCreateXML(priv->conn, buffer, 0);
VIR_FREE(buffer);
if (dev != NULL) {
vshPrintExtra(ctl, _("Node device %s created from %s\n"),
virNodeDeviceGetName(dev), from);
virNodeDeviceFree(dev);
} else {
vshError(ctl, _("Failed to create node device from %s"), from);
ret = false;
}
return ret;
}
/*
* "nodedev-destroy" command
*/
static const vshCmdInfo info_node_device_destroy[] = {
{.name = "help",
.data = N_("destroy (stop) a device on the node")
},
{.name = "desc",
.data = N_("Destroy a device on the node. Note that this "
"command destroys devices on the physical host")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_destroy[] = {
{.name = "name",
.type = VSH_OT_ALIAS,
.help = "device"
},
{.name = "device",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("device name or wwn pair in 'wwnn,wwpn' format"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = NULL}
};
static bool
cmdNodeDeviceDestroy(vshControl *ctl, const vshCmd *cmd)
{
virNodeDevicePtr dev = NULL;
bool ret = false;
const char *device_value = NULL;
char **arr = NULL;
int narr;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "device", &device_value) < 0)
return false;
if (strchr(device_value, ',')) {
narr = vshStringToArray(device_value, &arr);
if (narr != 2) {
vshError(ctl, _("Malformed device value '%s'"), device_value);
goto cleanup;
}
if (!virValidateWWN(arr[0]) || !virValidateWWN(arr[1]))
goto cleanup;
dev = virNodeDeviceLookupSCSIHostByWWN(priv->conn, arr[0], arr[1], 0);
} else {
dev = virNodeDeviceLookupByName(priv->conn, device_value);
}
if (!dev) {
vshError(ctl, "%s '%s'", _("Could not find matching device"), device_value);
goto cleanup;
}
if (virNodeDeviceDestroy(dev) == 0) {
vshPrintExtra(ctl, _("Destroyed node device '%s'\n"), device_value);
} else {
vshError(ctl, _("Failed to destroy node device '%s'"), device_value);
goto cleanup;
}
ret = true;
cleanup:
g_strfreev(arr);
if (dev)
virNodeDeviceFree(dev);
return ret;
}
struct virshNodeList {
char **names;
char **parents;
};
static const char *
virshNodeListLookup(int devid, bool parent, void *opaque)
{
struct virshNodeList *arrays = opaque;
if (parent)
return arrays->parents[devid];
return arrays->names[devid];
}
static int
virshNodeDeviceSorter(const void *a, const void *b)
{
virNodeDevicePtr *na = (virNodeDevicePtr *) a;
virNodeDevicePtr *nb = (virNodeDevicePtr *) b;
if (*na && !*nb)
return -1;
if (!*na)
return *nb != NULL;
return vshStrcasecmp(virNodeDeviceGetName(*na),
virNodeDeviceGetName(*nb));
}
struct virshNodeDeviceList {
virNodeDevicePtr *devices;
size_t ndevices;
};
typedef struct virshNodeDeviceList *virshNodeDeviceListPtr;
static void
virshNodeDeviceListFree(virshNodeDeviceListPtr list)
{
size_t i;
if (list && list->devices) {
for (i = 0; i < list->ndevices; i++) {
if (list->devices[i])
virNodeDeviceFree(list->devices[i]);
}
VIR_FREE(list->devices);
}
VIR_FREE(list);
}
static virshNodeDeviceListPtr
virshNodeDeviceListCollect(vshControl *ctl,
char **capnames,
int ncapnames,
unsigned int flags)
{
virshNodeDeviceListPtr list = g_new0(struct virshNodeDeviceList, 1);
size_t i;
int ret;
virNodeDevicePtr device;
bool success = false;
size_t deleted = 0;
int ndevices = 0;
char **names = NULL;
virshControlPtr priv = ctl->privData;
/* try the list with flags support (0.10.2 and later) */
if ((ret = virConnectListAllNodeDevices(priv->conn,
&list->devices,
flags)) >= 0) {
list->ndevices = ret;
goto finished;
}
/* check if the command is actually supported */
if (last_error && last_error->code == VIR_ERR_NO_SUPPORT)
goto fallback;
/* there was an error during the call */
vshError(ctl, "%s", _("Failed to list node devices"));
goto cleanup;
fallback:
/* fall back to old method (0.10.1 and older) */
vshResetLibvirtError();
ndevices = virNodeNumOfDevices(priv->conn, NULL, 0);
if (ndevices < 0) {
vshError(ctl, "%s", _("Failed to count node devices"));
goto cleanup;
}
if (ndevices == 0)
return list;
names = g_new0(char *, ndevices);
ndevices = virNodeListDevices(priv->conn, NULL, names, ndevices, 0);
if (ndevices < 0) {
vshError(ctl, "%s", _("Failed to list node devices"));
goto cleanup;
}
list->devices = g_new0(virNodeDevicePtr, ndevices);
list->ndevices = 0;
/* get the node devices */
for (i = 0; i < ndevices; i++) {
if (!(device = virNodeDeviceLookupByName(priv->conn, names[i])))
continue;
list->devices[list->ndevices++] = device;
}
/* truncate domains that weren't found */
deleted = ndevices - list->ndevices;
if (!capnames)
goto finished;
/* filter the list if the list was acquired by fallback means */
for (i = 0; i < list->ndevices; i++) {
char **caps = NULL;
int ncaps = 0;
bool match = false;
size_t j, k;
device = list->devices[i];
if ((ncaps = virNodeDeviceNumOfCaps(device)) < 0) {
vshError(ctl, "%s", _("Failed to get capability numbers "
"of the device"));
goto cleanup;
}
caps = g_new0(char *, ncaps);
if ((ncaps = virNodeDeviceListCaps(device, caps, ncaps)) < 0) {
vshError(ctl, "%s", _("Failed to get capability names of the device"));
VIR_FREE(caps);
goto cleanup;
}
/* Check if the device's capability matches with provided
* capabilities.
*/
for (j = 0; j < ncaps; j++) {
for (k = 0; k < ncapnames; k++) {
if (STREQ(caps[j], capnames[k])) {
match = true;
break;
}
}
}
VIR_FREE(caps);
if (!match)
goto remove_entry;
/* the device matched all filters, it may stay */
continue;
remove_entry:
/* the device has to be removed as it failed one of the filters */
virNodeDeviceFree(list->devices[i]);
list->devices[i] = NULL;
deleted++;
}
finished:
/* sort the list */
if (list->devices && list->ndevices)
qsort(list->devices, list->ndevices,
sizeof(*list->devices), virshNodeDeviceSorter);
/* truncate the list if filter simulation deleted entries */
if (deleted)
VIR_SHRINK_N(list->devices, list->ndevices, deleted);
success = true;
cleanup:
for (i = 0; ndevices != -1 && i < ndevices; i++)
VIR_FREE(names[i]);
VIR_FREE(names);
if (!success) {
virshNodeDeviceListFree(list);
list = NULL;
}
return list;
}
/*
* "nodedev-list" command
*/
static const vshCmdInfo info_node_list_devices[] = {
{.name = "help",
.data = N_("enumerate devices on this host")
},
{.name = "desc",
.data = ""
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_list_devices[] = {
{.name = "tree",
.type = VSH_OT_BOOL,
.help = N_("list devices in a tree")
},
{.name = "cap",
.type = VSH_OT_STRING,
.completer = virshNodeDeviceCapabilityNameCompleter,
.help = N_("capability names, separated by comma")
},
{.name = NULL}
};
static bool
cmdNodeListDevices(vshControl *ctl, const vshCmd *cmd G_GNUC_UNUSED)
{
const char *cap_str = NULL;
size_t i;
bool tree = vshCommandOptBool(cmd, "tree");
bool ret = true;
unsigned int flags = 0;
char **caps = NULL;
int ncaps = 0;
virshNodeDeviceListPtr list = NULL;
int cap_type = -1;
ignore_value(vshCommandOptStringQuiet(ctl, cmd, "cap", &cap_str));
if (cap_str) {
if (tree) {
vshError(ctl, "%s", _("Options --tree and --cap are incompatible"));
return false;
}
if ((ncaps = vshStringToArray(cap_str, &caps)) < 0)
return false;
}
for (i = 0; i < ncaps; i++) {
if ((cap_type = virNodeDevCapTypeFromString(caps[i])) < 0) {
vshError(ctl, "%s", _("Invalid capability type"));
ret = false;
goto cleanup;
}
switch ((virNodeDevCapType) cap_type) {
case VIR_NODE_DEV_CAP_SYSTEM:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM;
break;
case VIR_NODE_DEV_CAP_PCI_DEV:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV;
break;
case VIR_NODE_DEV_CAP_USB_DEV:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV;
break;
case VIR_NODE_DEV_CAP_USB_INTERFACE:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE;
break;
case VIR_NODE_DEV_CAP_NET:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET;
break;
case VIR_NODE_DEV_CAP_SCSI_HOST:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST;
break;
case VIR_NODE_DEV_CAP_SCSI_TARGET:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET;
break;
case VIR_NODE_DEV_CAP_SCSI:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI;
break;
case VIR_NODE_DEV_CAP_STORAGE:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE;
break;
case VIR_NODE_DEV_CAP_FC_HOST:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_FC_HOST;
break;
case VIR_NODE_DEV_CAP_VPORTS:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_VPORTS;
break;
case VIR_NODE_DEV_CAP_SCSI_GENERIC:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_GENERIC;
break;
case VIR_NODE_DEV_CAP_DRM:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_DRM;
break;
case VIR_NODE_DEV_CAP_MDEV_TYPES:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_MDEV_TYPES;
break;
case VIR_NODE_DEV_CAP_MDEV:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_MDEV;
break;
case VIR_NODE_DEV_CAP_CCW_DEV:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_CCW_DEV;
break;
case VIR_NODE_DEV_CAP_CSS_DEV:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_CSS_DEV;
break;
case VIR_NODE_DEV_CAP_VDPA:
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_VDPA;
break;
case VIR_NODE_DEV_CAP_LAST:
break;
}
}
if (!(list = virshNodeDeviceListCollect(ctl, caps, ncaps, flags))) {
ret = false;
goto cleanup;
}
if (tree) {
char **parents = g_new0(char *, list->ndevices);
char **names = g_new0(char *, list->ndevices);
struct virshNodeList arrays = { names, parents };
for (i = 0; i < list->ndevices; i++)
names[i] = g_strdup(virNodeDeviceGetName(list->devices[i]));
for (i = 0; i < list->ndevices; i++) {
virNodeDevicePtr dev = list->devices[i];
if (STRNEQ(names[i], "computer")) {
parents[i] = g_strdup(virNodeDeviceGetParent(dev));
} else {
parents[i] = NULL;
}
}
for (i = 0; i < list->ndevices; i++) {
if (parents[i] == NULL &&
vshTreePrint(ctl, virshNodeListLookup, &arrays,
list->ndevices, i) < 0)
ret = false;
}
for (i = 0; i < list->ndevices; i++)
VIR_FREE(parents[i]);
VIR_FREE(parents);
for (i = 0; i < list->ndevices; i++)
VIR_FREE(names[i]);
VIR_FREE(names);
} else {
for (i = 0; i < list->ndevices; i++)
vshPrint(ctl, "%s\n", virNodeDeviceGetName(list->devices[i]));
}
cleanup:
g_strfreev(caps);
virshNodeDeviceListFree(list);
return ret;
}
/*
* "nodedev-dumpxml" command
*/
static const vshCmdInfo info_node_device_dumpxml[] = {
{.name = "help",
.data = N_("node device details in XML")
},
{.name = "desc",
.data = N_("Output the node device details as an XML dump to stdout.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_dumpxml[] = {
{.name = "device",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("device name or wwn pair in 'wwnn,wwpn' format"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = NULL}
};
static bool
cmdNodeDeviceDumpXML(vshControl *ctl, const vshCmd *cmd)
{
virNodeDevicePtr device = NULL;
char *xml = NULL;
const char *device_value = NULL;
char **arr = NULL;
int narr;
bool ret = false;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "device", &device_value) < 0)
return false;
if (strchr(device_value, ',')) {
narr = vshStringToArray(device_value, &arr);
if (narr != 2) {
vshError(ctl, _("Malformed device value '%s'"), device_value);
goto cleanup;
}
if (!virValidateWWN(arr[0]) || !virValidateWWN(arr[1]))
goto cleanup;
device = virNodeDeviceLookupSCSIHostByWWN(priv->conn, arr[0], arr[1], 0);
} else {
device = virNodeDeviceLookupByName(priv->conn, device_value);
}
if (!device) {
vshError(ctl, "%s '%s'", _("Could not find matching device"), device_value);
goto cleanup;
}
if (!(xml = virNodeDeviceGetXMLDesc(device, 0)))
goto cleanup;
vshPrint(ctl, "%s\n", xml);
ret = true;
cleanup:
g_strfreev(arr);
VIR_FREE(xml);
if (device)
virNodeDeviceFree(device);
return ret;
}
/*
* "nodedev-detach" command
*/
static const vshCmdInfo info_node_device_detach[] = {
{.name = "help",
.data = N_("detach node device from its device driver")
},
{.name = "desc",
.data = N_("Detach node device from its device driver before assigning to a domain.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_detach[] = {
{.name = "device",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("device key"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = "driver",
.type = VSH_OT_STRING,
.help = N_("pci device assignment backend driver (e.g. 'vfio' or 'kvm')")
},
{.name = NULL}
};
static bool
cmdNodeDeviceDetach(vshControl *ctl, const vshCmd *cmd)
{
const char *name = NULL;
const char *driverName = NULL;
virNodeDevicePtr device;
bool ret = true;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "device", &name) < 0)
return false;
ignore_value(vshCommandOptStringQuiet(ctl, cmd, "driver", &driverName));
if (!(device = virNodeDeviceLookupByName(priv->conn, name))) {
vshError(ctl, _("Could not find matching device '%s'"), name);
return false;
}
if (driverName) {
/* we must use the newer API that accepts a driverName */
if (virNodeDeviceDetachFlags(device, driverName, 0) < 0)
ret = false;
} else {
/* Yes, our (old) public API is misspelled. At least virsh
* can accept either spelling. */
if (virNodeDeviceDettach(device) < 0)
ret = false;
}
if (ret)
vshPrintExtra(ctl, _("Device %s detached\n"), name);
else
vshError(ctl, _("Failed to detach device %s"), name);
virNodeDeviceFree(device);
return ret;
}
/*
* "nodedev-reattach" command
*/
static const vshCmdInfo info_node_device_reattach[] = {
{.name = "help",
.data = N_("reattach node device to its device driver")
},
{.name = "desc",
.data = N_("Reattach node device to its device driver once released by the domain.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_reattach[] = {
{.name = "device",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("device key"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = NULL}
};
static bool
cmdNodeDeviceReAttach(vshControl *ctl, const vshCmd *cmd)
{
const char *name = NULL;
virNodeDevicePtr device;
bool ret = true;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "device", &name) < 0)
return false;
if (!(device = virNodeDeviceLookupByName(priv->conn, name))) {
vshError(ctl, _("Could not find matching device '%s'"), name);
return false;
}
if (virNodeDeviceReAttach(device) == 0) {
vshPrintExtra(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[] = {
{.name = "help",
.data = N_("reset node device")
},
{.name = "desc",
.data = N_("Reset node device before or after assigning to a domain.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_reset[] = {
{.name = "device",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("device key"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = NULL}
};
static bool
cmdNodeDeviceReset(vshControl *ctl, const vshCmd *cmd)
{
const char *name = NULL;
virNodeDevicePtr device;
bool ret = true;
virshControlPtr priv = ctl->privData;
if (vshCommandOptStringReq(ctl, cmd, "device", &name) < 0)
return false;
if (!(device = virNodeDeviceLookupByName(priv->conn, name))) {
vshError(ctl, _("Could not find matching device '%s'"), name);
return false;
}
if (virNodeDeviceReset(device) == 0) {
vshPrintExtra(ctl, _("Device %s reset\n"), name);
} else {
vshError(ctl, _("Failed to reset device %s"), name);
ret = false;
}
virNodeDeviceFree(device);
return ret;
}
/*
* "nodedev-event" command
*/
VIR_ENUM_DECL(virshNodeDeviceEvent);
VIR_ENUM_IMPL(virshNodeDeviceEvent,
VIR_NODE_DEVICE_EVENT_LAST,
N_("Created"),
N_("Deleted"));
static const char *
virshNodeDeviceEventToString(int event)
{
const char *str = virshNodeDeviceEventTypeToString(event);
return str ? _(str) : _("unknown");
}
struct virshNodeDeviceEventData {
vshControl *ctl;
bool loop;
bool timestamp;
int count;
virshNodeDeviceEventCallback *cb;
};
typedef struct virshNodeDeviceEventData virshNodeDeviceEventData;
static void
vshEventLifecyclePrint(virConnectPtr conn G_GNUC_UNUSED,
virNodeDevicePtr dev,
int event,
int detail G_GNUC_UNUSED,
void *opaque)
{
virshNodeDeviceEventData *data = opaque;
if (!data->loop && data->count)
return;
if (data->timestamp) {
char timestamp[VIR_TIME_STRING_BUFLEN];
if (virTimeStringNowRaw(timestamp) < 0)
timestamp[0] = '\0';
vshPrint(data->ctl, _("%s: event 'lifecycle' for node device %s: %s\n"),
timestamp,
virNodeDeviceGetName(dev), virshNodeDeviceEventToString(event));
} else {
vshPrint(data->ctl, _("event 'lifecycle' for node device %s: %s\n"),
virNodeDeviceGetName(dev), virshNodeDeviceEventToString(event));
}
data->count++;
if (!data->loop)
vshEventDone(data->ctl);
}
static void
vshEventGenericPrint(virConnectPtr conn G_GNUC_UNUSED,
virNodeDevicePtr dev,
void *opaque)
{
virshNodeDeviceEventData *data = opaque;
if (!data->loop && data->count)
return;
if (data->timestamp) {
char timestamp[VIR_TIME_STRING_BUFLEN];
if (virTimeStringNowRaw(timestamp) < 0)
timestamp[0] = '\0';
vshPrint(data->ctl, _("%s: event '%s' for node device %s\n"),
timestamp,
data->cb->name,
virNodeDeviceGetName(dev));
} else {
vshPrint(data->ctl, _("event '%s' for node device %s\n"),
data->cb->name,
virNodeDeviceGetName(dev));
}
data->count++;
if (!data->loop)
vshEventDone(data->ctl);
}
virshNodeDeviceEventCallback virshNodeDeviceEventCallbacks[] = {
{ "lifecycle",
VIR_NODE_DEVICE_EVENT_CALLBACK(vshEventLifecyclePrint), },
{ "update", vshEventGenericPrint, }
};
G_STATIC_ASSERT(VIR_NODE_DEVICE_EVENT_ID_LAST == G_N_ELEMENTS(virshNodeDeviceEventCallbacks));
static const vshCmdInfo info_node_device_event[] = {
{.name = "help",
.data = N_("Node Device Events")
},
{.name = "desc",
.data = N_("List event types, or wait for node device events to occur")
},
{.name = NULL}
};
static const vshCmdOptDef opts_node_device_event[] = {
{.name = "device",
.type = VSH_OT_STRING,
.help = N_("filter by node device name"),
.completer = virshNodeDeviceNameCompleter,
},
{.name = "event",
.type = VSH_OT_STRING,
.completer = virshNodeDeviceEventNameCompleter,
.help = N_("which event type to wait for")
},
{.name = "loop",
.type = VSH_OT_BOOL,
.help = N_("loop until timeout or interrupt, rather than one-shot")
},
{.name = "timeout",
.type = VSH_OT_INT,
.help = N_("timeout seconds")
},
{.name = "list",
.type = VSH_OT_BOOL,
.help = N_("list valid event types")
},
{.name = "timestamp",
.type = VSH_OT_BOOL,
.help = N_("show timestamp for each printed event")
},
{.name = NULL}
};
static bool
cmdNodeDeviceEvent(vshControl *ctl, const vshCmd *cmd)
{
virNodeDevicePtr dev = NULL;
bool ret = false;
int eventId = -1;
int timeout = 0;
virshNodeDeviceEventData data;
const char *eventName = NULL;
const char *device_value = NULL;
int event;
virshControlPtr priv = ctl->privData;
if (vshCommandOptBool(cmd, "list")) {
size_t i;
for (i = 0; i < VIR_NODE_DEVICE_EVENT_ID_LAST; i++)
vshPrint(ctl, "%s\n", virshNodeDeviceEventCallbacks[i].name);
return true;
}
if (vshCommandOptStringReq(ctl, cmd, "event", &eventName) < 0)
return false;
if (!eventName) {
vshError(ctl, "%s", _("either --list or --event <type> is required"));
return false;
}
for (event = 0; event < VIR_NODE_DEVICE_EVENT_ID_LAST; event++)
if (STREQ(eventName, virshNodeDeviceEventCallbacks[event].name))
break;
if (event == VIR_NODE_DEVICE_EVENT_ID_LAST) {
vshError(ctl, _("unknown event type %s"), eventName);
return false;
}
data.ctl = ctl;
data.loop = vshCommandOptBool(cmd, "loop");
data.timestamp = vshCommandOptBool(cmd, "timestamp");
data.count = 0;
data.cb = &virshNodeDeviceEventCallbacks[event];
if (vshCommandOptTimeoutToMs(ctl, cmd, &timeout) < 0)
return false;
if (vshCommandOptStringReq(ctl, cmd, "device", &device_value) < 0)
return false;
if (device_value) {
if (!(dev = virNodeDeviceLookupByName(priv->conn, device_value))) {
vshError(ctl, "%s '%s'",
_("Could not find matching device"), device_value);
goto cleanup;
}
}
if (vshEventStart(ctl, timeout) < 0)
goto cleanup;
if ((eventId = virConnectNodeDeviceEventRegisterAny(priv->conn, dev, event,
data.cb->cb,
&data, NULL)) < 0)
goto cleanup;
switch (vshEventWait(ctl)) {
case VSH_EVENT_INTERRUPT:
vshPrint(ctl, "%s", _("event loop interrupted\n"));
break;
case VSH_EVENT_TIMEOUT:
vshPrint(ctl, "%s", _("event loop timed out\n"));
break;
case VSH_EVENT_DONE:
break;
default:
goto cleanup;
}
vshPrint(ctl, _("events received: %d\n"), data.count);
if (data.count)
ret = true;
cleanup:
vshEventCleanup(ctl);
if (eventId >= 0 &&
virConnectNodeDeviceEventDeregisterAny(priv->conn, eventId) < 0)
ret = false;
if (dev)
virNodeDeviceFree(dev);
return ret;
}
const vshCmdDef nodedevCmds[] = {
{.name = "nodedev-create",
.handler = cmdNodeDeviceCreate,
.opts = opts_node_device_create,
.info = info_node_device_create,
.flags = 0
},
{.name = "nodedev-destroy",
.handler = cmdNodeDeviceDestroy,
.opts = opts_node_device_destroy,
.info = info_node_device_destroy,
.flags = 0
},
{.name = "nodedev-detach",
.handler = cmdNodeDeviceDetach,
.opts = opts_node_device_detach,
.info = info_node_device_detach,
.flags = 0
},
{.name = "nodedev-dettach",
.flags = VSH_CMD_FLAG_ALIAS,
.alias = "nodedev-detach"
},
{.name = "nodedev-dumpxml",
.handler = cmdNodeDeviceDumpXML,
.opts = opts_node_device_dumpxml,
.info = info_node_device_dumpxml,
.flags = 0
},
{.name = "nodedev-list",
.handler = cmdNodeListDevices,
.opts = opts_node_list_devices,
.info = info_node_list_devices,
.flags = 0
},
{.name = "nodedev-reattach",
.handler = cmdNodeDeviceReAttach,
.opts = opts_node_device_reattach,
.info = info_node_device_reattach,
.flags = 0
},
{.name = "nodedev-reset",
.handler = cmdNodeDeviceReset,
.opts = opts_node_device_reset,
.info = info_node_device_reset,
.flags = 0
},
{.name = "nodedev-event",
.handler = cmdNodeDeviceEvent,
.opts = opts_node_device_event,
.info = info_node_device_event,
.flags = 0
},
{.name = NULL}
};
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