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f877fed36f
libvirt/src/qemu/qemu_monitor_json.c
Daniel P. Berrange f877fed36f Wire up QEMU implementation for virDomainOpenGraphics 
The QEMU monitor command 'add_client' can be used to connect to
a VNC or SPICE graphics display. This allows for implementation
of the virDomainOpenGraphics API

* src/qemu/qemu_driver.c: Implement virDomainOpenGraphics
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
  src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
  Add binding for 'add_client' command
2011-10-28 10:23:53 +01:00

3279 lines
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/*
* qemu_monitor_json.c: interaction with QEMU monitor console
*
* Copyright (C) 2006-2011 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <poll.h>
#include <unistd.h>
#include <string.h>
#include <sys/time.h>
#include "qemu_monitor_text.h"
#include "qemu_monitor_json.h"
#include "qemu_command.h"
#include "memory.h"
#include "logging.h"
#include "driver.h"
#include "datatypes.h"
#include "virterror_internal.h"
#include "json.h"
#include "ignore-value.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
#define LINE_ENDING "\r\n"
static void qemuMonitorJSONHandleShutdown(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleReset(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandlePowerdown(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleStop(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleRTCChange(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleWatchdog(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleIOError(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleVNCConnect(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleVNCInitialize(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleVNCDisconnect(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleBlockJob(qemuMonitorPtr mon, virJSONValuePtr data);
struct {
const char *type;
void (*handler)(qemuMonitorPtr mon, virJSONValuePtr data);
} eventHandlers[] = {
{ "SHUTDOWN", qemuMonitorJSONHandleShutdown, },
{ "RESET", qemuMonitorJSONHandleReset, },
{ "POWERDOWN", qemuMonitorJSONHandlePowerdown, },
{ "STOP", qemuMonitorJSONHandleStop, },
{ "RTC_CHANGE", qemuMonitorJSONHandleRTCChange, },
{ "WATCHDOG", qemuMonitorJSONHandleWatchdog, },
{ "BLOCK_IO_ERROR", qemuMonitorJSONHandleIOError, },
{ "VNC_CONNECTED", qemuMonitorJSONHandleVNCConnect, },
{ "VNC_INITIALIZED", qemuMonitorJSONHandleVNCInitialize, },
{ "VNC_DISCONNECTED", qemuMonitorJSONHandleVNCDisconnect, },
{ "BLOCK_JOB_COMPLETED", qemuMonitorJSONHandleBlockJob, },
};
static int
qemuMonitorJSONIOProcessEvent(qemuMonitorPtr mon,
virJSONValuePtr obj)
{
const char *type;
int i;
VIR_DEBUG("mon=%p obj=%p", mon, obj);
type = virJSONValueObjectGetString(obj, "event");
if (!type) {
VIR_WARN("missing event type in message");
errno = EINVAL;
return -1;
}
for (i = 0 ; i < ARRAY_CARDINALITY(eventHandlers) ; i++) {
if (STREQ(eventHandlers[i].type, type)) {
virJSONValuePtr data = virJSONValueObjectGet(obj, "data");
VIR_DEBUG("handle %s handler=%p data=%p", type,
eventHandlers[i].handler, data);
(eventHandlers[i].handler)(mon, data);
break;
}
}
return 0;
}
static int
qemuMonitorJSONIOProcessLine(qemuMonitorPtr mon,
const char *line,
qemuMonitorMessagePtr msg)
{
virJSONValuePtr obj = NULL;
int ret = -1;
VIR_DEBUG("Line [%s]", line);
if (!(obj = virJSONValueFromString(line)))
goto cleanup;
if (obj->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Parsed JSON reply '%s' isn't an object"), line);
goto cleanup;
}
if (virJSONValueObjectHasKey(obj, "QMP") == 1) {
ret = 0;
} else if (virJSONValueObjectHasKey(obj, "event") == 1) {
PROBE(QEMU_MONITOR_RECV_EVENT,
"mon=%p event=%s", mon, line);
ret = qemuMonitorJSONIOProcessEvent(mon, obj);
} else if (virJSONValueObjectHasKey(obj, "error") == 1 ||
virJSONValueObjectHasKey(obj, "return") == 1) {
PROBE(QEMU_MONITOR_RECV_REPLY,
"mon=%p reply=%s", mon, line);
if (msg) {
msg->rxObject = obj;
msg->finished = 1;
obj = NULL;
ret = 0;
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected JSON reply '%s'"), line);
}
} else {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Unknown JSON reply '%s'"), line);
}
cleanup:
virJSONValueFree(obj);
return ret;
}
int qemuMonitorJSONIOProcess(qemuMonitorPtr mon,
const char *data,
size_t len,
qemuMonitorMessagePtr msg)
{
int used = 0;
/*VIR_DEBUG("Data %d bytes [%s]", len, data);*/
while (used < len) {
char *nl = strstr(data + used, LINE_ENDING);
if (nl) {
int got = nl - (data + used);
char *line = strndup(data + used, got);
if (!line) {
virReportOOMError();
return -1;
}
used += got + strlen(LINE_ENDING);
line[got] = '\0'; /* kill \n */
if (qemuMonitorJSONIOProcessLine(mon, line, msg) < 0) {
VIR_FREE(line);
return -1;
}
VIR_FREE(line);
} else {
break;
}
}
VIR_DEBUG("Total used %d bytes out of %zd available in buffer", used, len);
return used;
}
static int
qemuMonitorJSONCommandWithFd(qemuMonitorPtr mon,
virJSONValuePtr cmd,
int scm_fd,
virJSONValuePtr *reply)
{
int ret = -1;
qemuMonitorMessage msg;
char *cmdstr = NULL;
char *id = NULL;
virJSONValuePtr exe;
*reply = NULL;
memset(&msg, 0, sizeof msg);
exe = virJSONValueObjectGet(cmd, "execute");
if (exe) {
if (!(id = qemuMonitorNextCommandID(mon)))
goto cleanup;
if (virJSONValueObjectAppendString(cmd, "id", id) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to append command 'id' string"));
goto cleanup;
}
}
if (!(cmdstr = virJSONValueToString(cmd))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&msg.txBuffer, "%s\r\n", cmdstr) < 0) {
virReportOOMError();
goto cleanup;
}
msg.txLength = strlen(msg.txBuffer);
msg.txFD = scm_fd;
VIR_DEBUG("Send command '%s' for write with FD %d", cmdstr, scm_fd);
ret = qemuMonitorSend(mon, &msg);
VIR_DEBUG("Receive command reply ret=%d rxObject=%p",
ret, msg.rxObject);
if (ret == 0) {
if (!msg.rxObject) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Missing monitor reply object"));
ret = -1;
} else {
*reply = msg.rxObject;
}
}
cleanup:
VIR_FREE(id);
VIR_FREE(cmdstr);
VIR_FREE(msg.txBuffer);
return ret;
}
static int
qemuMonitorJSONCommand(qemuMonitorPtr mon,
virJSONValuePtr cmd,
virJSONValuePtr *reply) {
return qemuMonitorJSONCommandWithFd(mon, cmd, -1, reply);
}
/* Ignoring OOM in this method, since we're already reporting
* a more important error
*
* XXX see qerror.h for different klasses & fill out useful params
*/
static const char *
qemuMonitorJSONStringifyError(virJSONValuePtr error)
{
const char *klass = virJSONValueObjectGetString(error, "class");
const char *detail = NULL;
/* The QMP 'desc' field is usually sufficient for our generic
* error reporting needs.
*/
if (klass)
detail = virJSONValueObjectGetString(error, "desc");
if (!detail)
detail = "unknown QEMU command error";
return detail;
}
static const char *
qemuMonitorJSONCommandName(virJSONValuePtr cmd)
{
const char *name = virJSONValueObjectGetString(cmd, "execute");
if (name)
return name;
else
return "<unknown>";
}
static int
qemuMonitorJSONCheckError(virJSONValuePtr cmd,
virJSONValuePtr reply)
{
if (virJSONValueObjectHasKey(reply, "error")) {
virJSONValuePtr error = virJSONValueObjectGet(reply, "error");
char *cmdstr = virJSONValueToString(cmd);
char *replystr = virJSONValueToString(reply);
/* Log the full JSON formatted command & error */
VIR_DEBUG("unable to execute QEMU command %s: %s",
cmdstr, replystr);
/* Only send the user the command name + friendly error */
if (!error)
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to execute QEMU command '%s'"),
qemuMonitorJSONCommandName(cmd));
else
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to execute QEMU command '%s': %s"),
qemuMonitorJSONCommandName(cmd),
qemuMonitorJSONStringifyError(error));
VIR_FREE(cmdstr);
VIR_FREE(replystr);
return -1;
} else if (!virJSONValueObjectHasKey(reply, "return")) {
char *cmdstr = virJSONValueToString(cmd);
char *replystr = virJSONValueToString(reply);
VIR_DEBUG("Neither 'return' nor 'error' is set in the JSON reply %s: %s",
cmdstr, replystr);
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to execute QEMU command '%s'"),
qemuMonitorJSONCommandName(cmd));
VIR_FREE(cmdstr);
VIR_FREE(replystr);
return -1;
}
return 0;
}
static int
qemuMonitorJSONHasError(virJSONValuePtr reply,
const char *klass)
{
virJSONValuePtr error;
const char *thisklass;
if (!virJSONValueObjectHasKey(reply, "error"))
return 0;
error = virJSONValueObjectGet(reply, "error");
if (!error)
return 0;
if (!virJSONValueObjectHasKey(error, "class"))
return 0;
thisklass = virJSONValueObjectGetString(error, "class");
if (!thisklass)
return 0;
return STREQ(klass, thisklass);
}
static virJSONValuePtr ATTRIBUTE_SENTINEL
qemuMonitorJSONMakeCommand(const char *cmdname,
...)
{
virJSONValuePtr obj;
virJSONValuePtr jargs = NULL;
va_list args;
char *key;
va_start(args, cmdname);
if (!(obj = virJSONValueNewObject()))
goto no_memory;
if (virJSONValueObjectAppendString(obj, "execute", cmdname) < 0)
goto no_memory;
while ((key = va_arg(args, char *)) != NULL) {
int ret;
char type;
if (strlen(key) < 3) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("argument key '%s' is too short, missing type prefix"),
key);
goto error;
}
/* Keys look like s:name the first letter is a type code */
type = key[0];
key += 2;
if (!jargs &&
!(jargs = virJSONValueNewObject()))
goto no_memory;
/* This doesn't supports maps/arrays. This hasn't
* proved to be a problem..... yet :-) */
switch (type) {
case 's': {
char *val = va_arg(args, char *);
ret = virJSONValueObjectAppendString(jargs, key, val);
} break;
case 'i': {
int val = va_arg(args, int);
ret = virJSONValueObjectAppendNumberInt(jargs, key, val);
} break;
case 'u': {
unsigned int val = va_arg(args, unsigned int);
ret = virJSONValueObjectAppendNumberUint(jargs, key, val);
} break;
case 'I': {
long long val = va_arg(args, long long);
ret = virJSONValueObjectAppendNumberLong(jargs, key, val);
} break;
case 'U': {
/* qemu silently truncates numbers larger than LLONG_MAX,
* so passing the full range of unsigned 64 bit integers
* is not safe here. Pass them as signed 64 bit integers
* instead.
*/
long long val = va_arg(args, long long);
ret = virJSONValueObjectAppendNumberLong(jargs, key, val);
} break;
case 'd': {
double val = va_arg(args, double);
ret = virJSONValueObjectAppendNumberDouble(jargs, key, val);
} break;
case 'b': {
int val = va_arg(args, int);
ret = virJSONValueObjectAppendBoolean(jargs, key, val);
} break;
case 'n': {
ret = virJSONValueObjectAppendNull(jargs, key);
} break;
default:
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported data type '%c' for arg '%s'"), type, key - 2);
goto error;
}
if (ret < 0)
goto no_memory;
}
if (jargs &&
virJSONValueObjectAppend(obj, "arguments", jargs) < 0)
goto no_memory;
va_end(args);
return obj;
no_memory:
virReportOOMError();
error:
virJSONValueFree(obj);
virJSONValueFree(jargs);
va_end(args);
return NULL;
}
static void
qemuFreeKeywords(int nkeywords, char **keywords, char **values)
{
int i;
for (i = 0 ; i < nkeywords ; i++) {
VIR_FREE(keywords[i]);
VIR_FREE(values[i]);
}
VIR_FREE(keywords);
VIR_FREE(values);
}
static virJSONValuePtr
qemuMonitorJSONKeywordStringToJSON(const char *str, const char *firstkeyword)
{
virJSONValuePtr ret = NULL;
char **keywords = NULL;
char **values = NULL;
int nkeywords = 0;
int i;
if (!(ret = virJSONValueNewObject()))
goto no_memory;
nkeywords = qemuParseKeywords(str, &keywords, &values, 1);
if (nkeywords < 0)
goto error;
for (i = 0 ; i < nkeywords ; i++) {
if (values[i] == NULL) {
if (i != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected empty keyword in %s"), str);
goto error;
} else {
/* This 3rd arg isn't a typo - the way the parser works is
* that the value ended up in the keyword field */
if (virJSONValueObjectAppendString(ret, firstkeyword, keywords[i]) < 0)
goto no_memory;
}
} else {
if (virJSONValueObjectAppendString(ret, keywords[i], values[i]) < 0)
goto no_memory;
}
}
qemuFreeKeywords(nkeywords, keywords, values);
return ret;
no_memory:
virReportOOMError();
error:
qemuFreeKeywords(nkeywords, keywords, values);
virJSONValueFree(ret);
return NULL;
}
static void qemuMonitorJSONHandleShutdown(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
{
qemuMonitorEmitShutdown(mon);
}
static void qemuMonitorJSONHandleReset(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
{
qemuMonitorEmitReset(mon);
}
static void qemuMonitorJSONHandlePowerdown(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
{
qemuMonitorEmitPowerdown(mon);
}
static void qemuMonitorJSONHandleStop(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
{
qemuMonitorEmitStop(mon);
}
static void qemuMonitorJSONHandleRTCChange(qemuMonitorPtr mon, virJSONValuePtr data)
{
long long offset = 0;
if (virJSONValueObjectGetNumberLong(data, "offset", &offset) < 0) {
VIR_WARN("missing offset in RTC change event");
offset = 0;
}
qemuMonitorEmitRTCChange(mon, offset);
}
VIR_ENUM_DECL(qemuMonitorWatchdogAction)
VIR_ENUM_IMPL(qemuMonitorWatchdogAction, VIR_DOMAIN_EVENT_WATCHDOG_DEBUG + 1,
"none", "pause", "reset", "poweroff", "shutdown", "debug");
static void qemuMonitorJSONHandleWatchdog(qemuMonitorPtr mon, virJSONValuePtr data)
{
const char *action;
int actionID;
if (!(action = virJSONValueObjectGetString(data, "action"))) {
VIR_WARN("missing action in watchdog event");
}
if (action) {
if ((actionID = qemuMonitorWatchdogActionTypeFromString(action)) < 0) {
VIR_WARN("unknown action %s in watchdog event", action);
actionID = VIR_DOMAIN_EVENT_WATCHDOG_NONE;
}
} else {
actionID = VIR_DOMAIN_EVENT_WATCHDOG_NONE;
}
qemuMonitorEmitWatchdog(mon, actionID);
}
VIR_ENUM_DECL(qemuMonitorIOErrorAction)
VIR_ENUM_IMPL(qemuMonitorIOErrorAction, VIR_DOMAIN_EVENT_IO_ERROR_REPORT + 1,
"ignore", "stop", "report");
static void qemuMonitorJSONHandleIOError(qemuMonitorPtr mon, virJSONValuePtr data)
{
const char *device;
const char *action;
const char *reason;
int actionID;
/* Throughout here we try our best to carry on upon errors,
since it's imporatant to get as much info as possible out
to the application */
if ((action = virJSONValueObjectGetString(data, "action")) == NULL) {
VIR_WARN("Missing action in disk io error event");
action = "ignore";
}
if ((device = virJSONValueObjectGetString(data, "device")) == NULL) {
VIR_WARN("missing device in disk io error event");
}
#if 0
if ((reason = virJSONValueObjectGetString(data, "reason")) == NULL) {
VIR_WARN("missing reason in disk io error event");
reason = "";
}
#else
reason = "";
#endif
if ((actionID = qemuMonitorIOErrorActionTypeFromString(action)) < 0) {
VIR_WARN("unknown disk io error action '%s'", action);
actionID = VIR_DOMAIN_EVENT_IO_ERROR_NONE;
}
qemuMonitorEmitIOError(mon, device, actionID, reason);
}
VIR_ENUM_DECL(qemuMonitorGraphicsAddressFamily)
VIR_ENUM_IMPL(qemuMonitorGraphicsAddressFamily, VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_UNIX + 1,
"ipv4", "ipv6", "unix");
static void qemuMonitorJSONHandleVNC(qemuMonitorPtr mon, virJSONValuePtr data, int phase)
{
const char *localNode, *localService, *localFamily;
const char *remoteNode, *remoteService, *remoteFamily;
const char *authScheme, *saslUsername, *x509dname;
int localFamilyID, remoteFamilyID;
virJSONValuePtr client;
virJSONValuePtr server;
if (!(client = virJSONValueObjectGet(data, "client"))) {
VIR_WARN("missing client info in VNC event");
return;
}
if (!(server = virJSONValueObjectGet(data, "server"))) {
VIR_WARN("missing server info in VNC event");
return;
}
authScheme = virJSONValueObjectGetString(server, "auth");
localFamily = virJSONValueObjectGetString(server, "family");
localNode = virJSONValueObjectGetString(server, "host");
localService = virJSONValueObjectGetString(server, "service");
remoteFamily = virJSONValueObjectGetString(client, "family");
remoteNode = virJSONValueObjectGetString(client, "host");
remoteService = virJSONValueObjectGetString(client, "service");
saslUsername = virJSONValueObjectGetString(client, "sasl_username");
x509dname = virJSONValueObjectGetString(client, "x509_dname");
if ((localFamilyID = qemuMonitorGraphicsAddressFamilyTypeFromString(localFamily)) < 0) {
VIR_WARN("unknown address family '%s'", localFamily);
localFamilyID = VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV4;
}
if ((remoteFamilyID = qemuMonitorGraphicsAddressFamilyTypeFromString(remoteFamily)) < 0) {
VIR_WARN("unknown address family '%s'", remoteFamily);
remoteFamilyID = VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV4;
}
qemuMonitorEmitGraphics(mon, phase,
localFamilyID, localNode, localService,
remoteFamilyID, remoteNode, remoteService,
authScheme, x509dname, saslUsername);
}
static void qemuMonitorJSONHandleVNCConnect(qemuMonitorPtr mon, virJSONValuePtr data)
{
qemuMonitorJSONHandleVNC(mon, data, VIR_DOMAIN_EVENT_GRAPHICS_CONNECT);
}
static void qemuMonitorJSONHandleVNCInitialize(qemuMonitorPtr mon, virJSONValuePtr data)
{
qemuMonitorJSONHandleVNC(mon, data, VIR_DOMAIN_EVENT_GRAPHICS_INITIALIZE);
}
static void qemuMonitorJSONHandleVNCDisconnect(qemuMonitorPtr mon, virJSONValuePtr data)
{
qemuMonitorJSONHandleVNC(mon, data, VIR_DOMAIN_EVENT_GRAPHICS_DISCONNECT);
}
static void qemuMonitorJSONHandleBlockJob(qemuMonitorPtr mon, virJSONValuePtr data)
{
const char *device;
const char *type_str;
int type = VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN;
unsigned long long offset, len;
int status = VIR_DOMAIN_BLOCK_JOB_FAILED;
if ((device = virJSONValueObjectGetString(data, "device")) == NULL) {
VIR_WARN("missing device in block job event");
goto out;
}
if (virJSONValueObjectGetNumberUlong(data, "offset", &offset) < 0) {
VIR_WARN("missing offset in block job event");
goto out;
}
if (virJSONValueObjectGetNumberUlong(data, "len", &len) < 0) {
VIR_WARN("missing len in block job event");
goto out;
}
if ((type_str = virJSONValueObjectGetString(data, "type")) == NULL) {
VIR_WARN("missing type in block job event");
goto out;
}
if (STREQ(type_str, "stream"))
type = VIR_DOMAIN_BLOCK_JOB_TYPE_PULL;
if (offset != 0 && offset == len)
status = VIR_DOMAIN_BLOCK_JOB_COMPLETED;
out:
qemuMonitorEmitBlockJob(mon, device, type, status);
}
int
qemuMonitorJSONHumanCommandWithFd(qemuMonitorPtr mon,
const char *cmd_str,
int scm_fd,
char **reply_str)
{
virJSONValuePtr cmd = NULL;
virJSONValuePtr reply = NULL;
virJSONValuePtr obj;
int ret = -1;
cmd = qemuMonitorJSONMakeCommand("human-monitor-command",
"s:command-line", cmd_str,
NULL);
if (!cmd || qemuMonitorJSONCommandWithFd(mon, cmd, scm_fd, &reply) < 0)
goto cleanup;
if (qemuMonitorJSONCheckError(cmd, reply))
goto cleanup;
if (!(obj = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("human monitor command was missing return data"));
goto cleanup;
}
if (reply_str) {
const char *data;
if ((data = virJSONValueGetString(obj)))
*reply_str = strdup(data);
else
*reply_str = strdup("");
if (!*reply_str) {
virReportOOMError();
goto cleanup;
}
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int
qemuMonitorJSONSetCapabilities(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("qmp_capabilities", NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* Returns: 0 if human-monitor-command is not supported, +1 if
* human-monitor-command worked or -1 on failure
*/
int
qemuMonitorJSONCheckHMP(qemuMonitorPtr mon)
{
int ret = -1;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-commands", NULL);
virJSONValuePtr reply = NULL;
virJSONValuePtr data;
int i, n;
if (!cmd)
return ret;
if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0 ||
qemuMonitorJSONCheckError(cmd, reply) < 0)
goto cleanup;
if (!(data = virJSONValueObjectGet(reply, "return")) ||
data->type != VIR_JSON_TYPE_ARRAY ||
(n = virJSONValueArraySize(data)) <= 0)
goto cleanup;
for (i = 0; i < n; i++) {
virJSONValuePtr entry;
const char *name;
if (!(entry = virJSONValueArrayGet(data, i)) ||
!(name = virJSONValueObjectGetString(entry, "name")))
goto cleanup;
if (STREQ(name, "human-monitor-command")) {
ret = 1;
goto cleanup;
}
}
/* human-monitor-command is not supported */
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int
qemuMonitorJSONStartCPUs(qemuMonitorPtr mon,
virConnectPtr conn ATTRIBUTE_UNUSED)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("cont", NULL);
virJSONValuePtr reply = NULL;
int i = 0, timeout = 3;
if (!cmd)
return -1;
do {
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret != 0)
break;
/* If no error, we're done */
if ((ret = qemuMonitorJSONCheckError(cmd, reply)) == 0)
break;
/* If error class is not MigrationExpected, we're done.
* Otherwise try 'cont' cmd again */
if (!qemuMonitorJSONHasError(reply, "MigrationExpected"))
break;
virJSONValueFree(reply);
reply = NULL;
usleep(250000);
} while (++i <= timeout);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int
qemuMonitorJSONStopCPUs(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("stop", NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int
qemuMonitorJSONGetStatus(qemuMonitorPtr mon,
bool *running,
virDomainPausedReason *reason)
{
int ret;
const char *status;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
virJSONValuePtr data;
if (reason)
*reason = VIR_DOMAIN_PAUSED_UNKNOWN;
if (!(cmd = qemuMonitorJSONMakeCommand("query-status", NULL)))
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret < 0)
goto cleanup;
ret = -1;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-status reply was missing return data"));
goto cleanup;
}
if (virJSONValueObjectGetBoolean(data, "running", running) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-status reply was missing running state"));
goto cleanup;
}
if ((status = virJSONValueObjectGetString(data, "status"))) {
if (!*running && reason)
*reason = qemuMonitorVMStatusToPausedReason(status);
} else if (!*running) {
VIR_DEBUG("query-status reply was missing status details");
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSystemPowerdown(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("system_powerdown", NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSetLink(qemuMonitorPtr mon,
const char *name,
enum virDomainNetInterfaceLinkState state)
{
int ret;
virJSONValuePtr reply = NULL;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("set_link",
"s:name", name,
"b:up", state != VIR_DOMAIN_NET_INTERFACE_LINK_STATE_DOWN,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSystemReset(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("system_reset", NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* [ { "CPU": 0, "current": true, "halted": false, "pc": 3227107138 },
* { "CPU": 1, "current": false, "halted": true, "pc": 7108165 } ]
*/
static int
qemuMonitorJSONExtractCPUInfo(virJSONValuePtr reply,
int **pids)
{
virJSONValuePtr data;
int ret = -1;
int i;
int *threads = NULL;
int ncpus;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cpu reply was missing return data"));
goto cleanup;
}
if (data->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cpu information was not an array"));
goto cleanup;
}
if ((ncpus = virJSONValueArraySize(data)) <= 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cpu information was empty"));
goto cleanup;
}
if (VIR_REALLOC_N(threads, ncpus) < 0) {
virReportOOMError();
goto cleanup;
}
for (i = 0 ; i < ncpus ; i++) {
virJSONValuePtr entry = virJSONValueArrayGet(data, i);
int cpu;
int thread;
if (!entry) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device information was missing array element"));
goto cleanup;
}
if (virJSONValueObjectGetNumberInt(entry, "CPU", &cpu) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cpu information was missing cpu number"));
goto cleanup;
}
if (virJSONValueObjectGetNumberInt(entry, "thread_id", &thread) < 0) {
/* Only qemu-kvm tree includs thread_id, so treat this as
non-fatal, simply returning no data */
ret = 0;
goto cleanup;
}
if (cpu != i) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected cpu index %d expecting %d"),
i, cpu);
goto cleanup;
}
threads[i] = thread;
}
*pids = threads;
threads = NULL;
ret = ncpus;
cleanup:
VIR_FREE(threads);
return ret;
}
int qemuMonitorJSONGetCPUInfo(qemuMonitorPtr mon,
int **pids)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-cpus",
NULL);
virJSONValuePtr reply = NULL;
*pids = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret == 0)
ret = qemuMonitorJSONExtractCPUInfo(reply, pids);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetVirtType(qemuMonitorPtr mon,
int *virtType)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-kvm",
NULL);
virJSONValuePtr reply = NULL;
*virtType = VIR_DOMAIN_VIRT_QEMU;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret == 0) {
virJSONValuePtr data;
bool val = false;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info kvm reply was missing return data"));
ret = -1;
goto cleanup;
}
if (virJSONValueObjectGetBoolean(data, "enabled", &val) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info kvm reply missing 'running' field"));
ret = -1;
goto cleanup;
}
if (val)
*virtType = VIR_DOMAIN_VIRT_KVM;
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* Returns: 0 if balloon not supported, +1 if balloon query worked
* or -1 on failure
*/
int qemuMonitorJSONGetBalloonInfo(qemuMonitorPtr mon,
unsigned long *currmem)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-balloon",
NULL);
virJSONValuePtr reply = NULL;
*currmem = 0;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) {
/* See if balloon soft-failed */
if (qemuMonitorJSONHasError(reply, "DeviceNotActive") ||
qemuMonitorJSONHasError(reply, "KVMMissingCap"))
goto cleanup;
/* See if any other fatal error occurred */
ret = qemuMonitorJSONCheckError(cmd, reply);
/* Success */
if (ret == 0) {
virJSONValuePtr data;
unsigned long long mem;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing return data"));
ret = -1;
goto cleanup;
}
if (virJSONValueObjectGetNumberUlong(data, "actual", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon data"));
ret = -1;
goto cleanup;
}
*currmem = (mem/1024);
ret = 1;
}
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetMemoryStats(qemuMonitorPtr mon,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
int ret;
int got = 0;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-balloon",
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) {
/* See if balloon soft-failed */
if (qemuMonitorJSONHasError(reply, "DeviceNotActive") ||
qemuMonitorJSONHasError(reply, "KVMMissingCap"))
goto cleanup;
/* See if any other fatal error occurred */
ret = qemuMonitorJSONCheckError(cmd, reply);
/* Success */
if (ret == 0) {
virJSONValuePtr data;
unsigned long long mem;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing return data"));
ret = -1;
goto cleanup;
}
if (virJSONValueObjectHasKey(data, "actual") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "actual", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon actual"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON;
stats[got].val = (mem/1024);
got++;
}
if (virJSONValueObjectHasKey(data, "mem_swapped_in") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "mem_swapped_in", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon mem_swapped_in"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_SWAP_IN;
stats[got].val = (mem/1024);
got++;
}
if (virJSONValueObjectHasKey(data, "mem_swapped_out") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "mem_swapped_out", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon mem_swapped_out"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_SWAP_OUT;
stats[got].val = (mem/1024);
got++;
}
if (virJSONValueObjectHasKey(data, "major_page_faults") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "major_page_faults", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon major_page_faults"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT;
stats[got].val = mem;
got++;
}
if (virJSONValueObjectHasKey(data, "minor_page_faults") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "minor_page_faults", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon minor_page_faults"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT;
stats[got].val = mem;
got++;
}
if (virJSONValueObjectHasKey(data, "free_mem") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "free_mem", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon free_mem"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_UNUSED;
stats[got].val = (mem/1024);
got++;
}
if (virJSONValueObjectHasKey(data, "total_mem") && (got < nr_stats)) {
if (virJSONValueObjectGetNumberUlong(data, "total_mem", &mem) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info balloon reply was missing balloon total_mem"));
ret = -1;
goto cleanup;
}
stats[got].tag = VIR_DOMAIN_MEMORY_STAT_AVAILABLE;
stats[got].val = (mem/1024);
got++;
}
}
}
if (got > 0)
ret = got;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetBlockInfo(qemuMonitorPtr mon,
const char *devname,
struct qemuDomainDiskInfo *info)
{
int ret = 0;
bool found = false;
int i;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-block",
NULL);
virJSONValuePtr reply = NULL;
virJSONValuePtr devices;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret < 0)
goto cleanup;
ret = -1;
devices = virJSONValueObjectGet(reply, "return");
if (!devices || devices->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("block info reply was missing device list"));
goto cleanup;
}
for (i = 0; i < virJSONValueArraySize(devices); i++) {
virJSONValuePtr dev = virJSONValueArrayGet(devices, i);
const char *thisdev;
if (!dev || dev->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("block info device entry was not in expected format"));
goto cleanup;
}
if ((thisdev = virJSONValueObjectGetString(dev, "device")) == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("block info device entry was not in expected format"));
goto cleanup;
}
if (STRPREFIX(thisdev, QEMU_DRIVE_HOST_PREFIX))
thisdev += strlen(QEMU_DRIVE_HOST_PREFIX);
if (STRNEQ(thisdev, devname))
continue;
found = true;
if (virJSONValueObjectGetBoolean(dev, "removable", &info->removable) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s value"),
"removable");
goto cleanup;
}
if (virJSONValueObjectGetBoolean(dev, "locked", &info->locked) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s value"),
"locked");
goto cleanup;
}
/* Don't check for success here, because 'tray-open' is presented iff
* medium is ejected.
*/
ignore_value(virJSONValueObjectGetBoolean(dev, "tray-open",
&info->tray_open));
break;
}
if (!found) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find info for device '%s'"),
devname);
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon,
const char *dev_name,
long long *rd_req,
long long *rd_bytes,
long long *rd_total_times,
long long *wr_req,
long long *wr_bytes,
long long *wr_total_times,
long long *flush_req,
long long *flush_total_times,
long long *errs)
{
int ret;
int i;
int found = 0;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-blockstats",
NULL);
virJSONValuePtr reply = NULL;
virJSONValuePtr devices;
*rd_req = *rd_bytes = -1;
*wr_req = *wr_bytes = *errs = -1;
if (rd_total_times)
*rd_total_times = -1;
if (wr_total_times)
*wr_total_times = -1;
if (flush_req)
*flush_req = -1;
if (flush_total_times)
*flush_total_times = -1;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret < 0)
goto cleanup;
ret = -1;
devices = virJSONValueObjectGet(reply, "return");
if (!devices || devices->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats reply was missing device list"));
goto cleanup;
}
for (i = 0 ; i < virJSONValueArraySize(devices) ; i++) {
virJSONValuePtr dev = virJSONValueArrayGet(devices, i);
virJSONValuePtr stats;
const char *thisdev;
if (!dev || dev->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats device entry was not in expected format"));
goto cleanup;
}
if ((thisdev = virJSONValueObjectGetString(dev, "device")) == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats device entry was not in expected format"));
goto cleanup;
}
/* New QEMU has separate names for host & guest side of the disk
* and libvirt gives the host side a 'drive-' prefix. The passed
* in dev_name is the guest side though
*/
if (STRPREFIX(thisdev, QEMU_DRIVE_HOST_PREFIX))
thisdev += strlen(QEMU_DRIVE_HOST_PREFIX);
if (STRNEQ(thisdev, dev_name))
continue;
found = 1;
if ((stats = virJSONValueObjectGet(dev, "stats")) == NULL ||
stats->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats stats entry was not in expected format"));
goto cleanup;
}
if (virJSONValueObjectGetNumberLong(stats, "rd_bytes", rd_bytes) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"rd_bytes");
goto cleanup;
}
if (virJSONValueObjectGetNumberLong(stats, "rd_operations", rd_req) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"rd_operations");
goto cleanup;
}
if (rd_total_times &&
virJSONValueObjectHasKey(stats, "rd_total_times_ns") &&
(virJSONValueObjectGetNumberLong(stats, "rd_total_times_ns",
rd_total_times) < 0)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"rd_total_times_ns");
goto cleanup;
}
if (virJSONValueObjectGetNumberLong(stats, "wr_bytes", wr_bytes) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"wr_bytes");
goto cleanup;
}
if (virJSONValueObjectGetNumberLong(stats, "wr_operations", wr_req) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"wr_operations");
goto cleanup;
}
if (wr_total_times &&
virJSONValueObjectHasKey(stats, "wr_total_times_ns") &&
(virJSONValueObjectGetNumberLong(stats, "wr_total_times_ns",
wr_total_times) < 0)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"wr_total_times_ns");
goto cleanup;
}
if (flush_req &&
virJSONValueObjectHasKey(stats, "flush_operations") &&
(virJSONValueObjectGetNumberLong(stats, "flush_operations",
flush_req) < 0)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"flush_operations");
goto cleanup;
}
if (flush_total_times &&
virJSONValueObjectHasKey(stats, "flush_total_times_ns") &&
(virJSONValueObjectGetNumberLong(stats, "flush_total_times_ns",
flush_total_times) < 0)) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"flush_total_times_ns");
goto cleanup;
}
}
if (!found) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find statistics for device '%s'"), dev_name);
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetBlockStatsParamsNumber(qemuMonitorPtr mon,
int *nparams)
{
int ret, i, num = 0;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-blockstats",
NULL);
virJSONValuePtr reply = NULL;
virJSONValuePtr devices = NULL;
virJSONValuePtr dev = NULL;
virJSONValuePtr stats = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret < 0)
goto cleanup;
ret = -1;
devices = virJSONValueObjectGet(reply, "return");
if (!devices || devices->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats reply was missing device list"));
goto cleanup;
}
dev = virJSONValueArrayGet(devices, 0);
if (!dev || dev->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats device entry was not in expected format"));
goto cleanup;
}
if ((stats = virJSONValueObjectGet(dev, "stats")) == NULL ||
stats->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats stats entry was not in expected format"));
goto cleanup;
}
for (i = 0 ; i < stats->data.object.npairs; i++) {
const char *key = stats->data.object.pairs[i].key;
if (STREQ(key, "rd_bytes") ||
STREQ(key, "rd_operations") ||
STREQ(key, "rd_total_times_ns") ||
STREQ(key, "wr_bytes") ||
STREQ(key, "wr_operations") ||
STREQ(key, "wr_total_times_ns") ||
STREQ(key, "flush_operations") ||
STREQ(key, "flush_total_times_ns")) {
num++;
} else {
/* wr_highest_offset is parsed by qemuMonitorJSONGetBlockExtent. */
if (STRNEQ(key, "wr_highest_offset"))
VIR_DEBUG("Missed block stat: %s", key);
}
}
*nparams = num;
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetBlockExtent(qemuMonitorPtr mon,
const char *dev_name,
unsigned long long *extent)
{
int ret = -1;
int i;
int found = 0;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-blockstats",
NULL);
virJSONValuePtr reply = NULL;
virJSONValuePtr devices;
*extent = 0;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret < 0)
goto cleanup;
ret = -1;
devices = virJSONValueObjectGet(reply, "return");
if (!devices || devices->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats reply was missing device list"));
goto cleanup;
}
for (i = 0 ; i < virJSONValueArraySize(devices) ; i++) {
virJSONValuePtr dev = virJSONValueArrayGet(devices, i);
virJSONValuePtr stats;
virJSONValuePtr parent;
const char *thisdev;
if (!dev || dev->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats device entry was not in expected format"));
goto cleanup;
}
if ((thisdev = virJSONValueObjectGetString(dev, "device")) == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats device entry was not in expected format"));
goto cleanup;
}
/* New QEMU has separate names for host & guest side of the disk
* and libvirt gives the host side a 'drive-' prefix. The passed
* in dev_name is the guest side though
*/
if (STRPREFIX(thisdev, QEMU_DRIVE_HOST_PREFIX))
thisdev += strlen(QEMU_DRIVE_HOST_PREFIX);
if (STRNEQ(thisdev, dev_name))
continue;
found = 1;
if ((parent = virJSONValueObjectGet(dev, "parent")) == NULL ||
parent->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats parent entry was not in expected format"));
goto cleanup;
}
if ((stats = virJSONValueObjectGet(parent, "stats")) == NULL ||
stats->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("blockstats stats entry was not in expected format"));
goto cleanup;
}
if (virJSONValueObjectGetNumberUlong(stats, "wr_highest_offset", extent) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot read %s statistic"),
"wr_highest_offset");
goto cleanup;
}
}
if (!found) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find statistics for device '%s'"), dev_name);
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSetVNCPassword(qemuMonitorPtr mon,
const char *password)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("change",
"s:device", "vnc",
"s:target", "password",
"s:arg", password,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/* Returns -1 on error, -2 if not supported */
int qemuMonitorJSONSetPassword(qemuMonitorPtr mon,
const char *protocol,
const char *password,
const char *action_if_connected)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("set_password",
"s:protocol", protocol,
"s:password", password,
"s:connected", action_if_connected,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) {
if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
ret = -2;
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/* Returns -1 on error, -2 if not supported */
int qemuMonitorJSONExpirePassword(qemuMonitorPtr mon,
const char *protocol,
const char *expire_time)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("expire_password",
"s:protocol", protocol,
"s:time", expire_time,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) {
if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
ret = -2;
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* Returns: 0 if balloon not supported, +1 if balloon adjust worked
* or -1 on failure
*/
int qemuMonitorJSONSetBalloon(qemuMonitorPtr mon,
unsigned long newmem)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("balloon",
"U:value", ((unsigned long long)newmem)*1024,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) {
/* See if balloon soft-failed */
if (qemuMonitorJSONHasError(reply, "DeviceNotActive") ||
qemuMonitorJSONHasError(reply, "KVMMissingCap"))
goto cleanup;
/* See if any other fatal error occurred */
ret = qemuMonitorJSONCheckError(cmd, reply);
/* Real success */
if (ret == 0)
ret = 1;
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* Returns: 0 if CPU hotplug not supported, +1 if CPU hotplug worked
* or -1 on failure
*/
int qemuMonitorJSONSetCPU(qemuMonitorPtr mon,
int cpu, int online)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("cpu_set",
"U:cpu", (unsigned long long)cpu,
"s:state", online ? "online" : "offline",
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "cpu_set")) {
VIR_DEBUG("cpu_set command not found, trying HMP");
ret = qemuMonitorTextSetCPU(mon, cpu, online);
goto cleanup;
}
if (ret == 0) {
/* XXX See if CPU soft-failed due to lack of ACPI */
#if 0
if (qemuMonitorJSONHasError(reply, "DeviceNotActive") ||
qemuMonitorJSONHasError(reply, "KVMMissingCap"))
goto cleanup;
#endif
/* See if any other fatal error occurred */
ret = qemuMonitorJSONCheckError(cmd, reply);
/* Real success */
if (ret == 0)
ret = 1;
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon,
const char *dev_name,
bool force)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("eject",
"s:device", dev_name,
"b:force", force ? 1 : 0,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONChangeMedia(qemuMonitorPtr mon,
const char *dev_name,
const char *newmedia,
const char *format)
{
int ret;
virJSONValuePtr cmd;
if (format)
cmd = qemuMonitorJSONMakeCommand("change",
"s:device", dev_name,
"s:target", newmedia,
"s:arg", format,
NULL);
else
cmd = qemuMonitorJSONMakeCommand("change",
"s:device", dev_name,
"s:target", newmedia,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
static int qemuMonitorJSONSaveMemory(qemuMonitorPtr mon,
const char *cmdtype,
unsigned long long offset,
size_t length,
const char *path)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand(cmdtype,
"U:val", offset,
"u:size", length,
"s:filename", path,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSaveVirtualMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
return qemuMonitorJSONSaveMemory(mon, "memsave", offset, length, path);
}
int qemuMonitorJSONSavePhysicalMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
return qemuMonitorJSONSaveMemory(mon, "pmemsave", offset, length, path);
}
int qemuMonitorJSONSetMigrationSpeed(qemuMonitorPtr mon,
unsigned long bandwidth)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("migrate_set_speed",
"U:value", bandwidth * 1024ULL * 1024ULL,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSetMigrationDowntime(qemuMonitorPtr mon,
unsigned long long downtime)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("migrate_set_downtime",
"d:value", downtime / 1000.0,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
static int
qemuMonitorJSONGetMigrationStatusReply(virJSONValuePtr reply,
int *status,
unsigned long long *transferred,
unsigned long long *remaining,
unsigned long long *total)
{
virJSONValuePtr ret;
const char *statusstr;
unsigned long long t;
if (!(ret = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info migration reply was missing return data"));
return -1;
}
if (!(statusstr = virJSONValueObjectGetString(ret, "status"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("info migration reply was missing return status"));
return -1;
}
if ((*status = qemuMonitorMigrationStatusTypeFromString(statusstr)) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected migration status in %s"), statusstr);
return -1;
}
if (*status == QEMU_MONITOR_MIGRATION_STATUS_ACTIVE) {
virJSONValuePtr ram = virJSONValueObjectGet(ret, "ram");
if (!ram) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("migration was active, but no RAM info was set"));
return -1;
}
if (virJSONValueObjectGetNumberUlong(ram, "transferred",
transferred) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("migration was active, but RAM 'transferred' "
"data was missing"));
return -1;
}
if (virJSONValueObjectGetNumberUlong(ram, "remaining", remaining) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("migration was active, but RAM 'remaining' "
"data was missing"));
return -1;
}
if (virJSONValueObjectGetNumberUlong(ram, "total", total) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("migration was active, but RAM 'total' "
"data was missing"));
return -1;
}
virJSONValuePtr disk = virJSONValueObjectGet(ret, "disk");
if (!disk) {
return 0;
}
if (virJSONValueObjectGetNumberUlong(disk, "transferred", &t) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("disk migration was active, but 'transferred' "
"data was missing"));
return -1;
}
*transferred += t;
if (virJSONValueObjectGetNumberUlong(disk, "remaining", &t) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("disk migration was active, but 'remaining' "
"data was missing"));
return -1;
}
*remaining += t;
if (virJSONValueObjectGetNumberUlong(disk, "total", &t) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("disk migration was active, but 'total' "
"data was missing"));
return -1;
}
*total += t;
}
return 0;
}
int qemuMonitorJSONGetMigrationStatus(qemuMonitorPtr mon,
int *status,
unsigned long long *transferred,
unsigned long long *remaining,
unsigned long long *total)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-migrate",
NULL);
virJSONValuePtr reply = NULL;
*status = 0;
*transferred = *remaining = *total = 0;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret == 0 &&
qemuMonitorJSONGetMigrationStatusReply(reply,
status,
transferred,
remaining,
total) < 0)
ret = -1;
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONMigrate(qemuMonitorPtr mon,
unsigned int flags,
const char *uri)
{
int ret;
virJSONValuePtr cmd =
qemuMonitorJSONMakeCommand("migrate",
"b:detach", flags & QEMU_MONITOR_MIGRATE_BACKGROUND ? 1 : 0,
"b:blk", flags & QEMU_MONITOR_MIGRATE_NON_SHARED_DISK ? 1 : 0,
"b:inc", flags & QEMU_MONITOR_MIGRATE_NON_SHARED_INC ? 1 : 0,
"s:uri", uri,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONMigrateCancel(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("migrate_cancel", NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGraphicsRelocate(qemuMonitorPtr mon,
int type,
const char *hostname,
int port,
int tlsPort,
const char *tlsSubject)
{
int ret = -1;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("client_migrate_info",
"s:protocol",
(type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE ? "spice" : "vnc"),
"s:hostname", hostname,
"i:port", port,
"i:tls-port", tlsPort,
(tlsSubject ? "s:cert-subject" : NULL),
(tlsSubject ? tlsSubject : NULL),
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddUSBDisk(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *path ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("usb_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONAddUSBDeviceExact(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
int bus ATTRIBUTE_UNUSED,
int dev ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("usb_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONAddUSBDeviceMatch(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
int vendor ATTRIBUTE_UNUSED,
int product ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("usb_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONAddPCIHostDevice(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *hostAddr ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *guestAddr ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("pci_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONAddPCIDisk(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *path ATTRIBUTE_UNUSED,
const char *bus ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *guestAddr ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("pci_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONAddPCINetwork(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *nicstr ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *guestAddr ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("pci_add not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONRemovePCIDevice(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *guestAddr ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("pci_del not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONSendFileHandle(qemuMonitorPtr mon,
const char *fdname,
int fd)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("getfd",
"s:fdname", fdname,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommandWithFd(mon, cmd, fd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONCloseFileHandle(qemuMonitorPtr mon,
const char *fdname)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("closefd",
"s:fdname", fdname,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddHostNetwork(qemuMonitorPtr mon,
const char *netstr)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("host_net_add",
"s:device", netstr,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONRemoveHostNetwork(qemuMonitorPtr mon,
int vlan,
const char *netname)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("host_net_remove",
"i:vlan", vlan,
"s:device", netname,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddNetdev(qemuMonitorPtr mon,
const char *netdevstr)
{
int ret = -1;
virJSONValuePtr cmd = NULL;
virJSONValuePtr reply = NULL;
virJSONValuePtr args = NULL;
cmd = qemuMonitorJSONMakeCommand("netdev_add", NULL);
if (!cmd)
return -1;
args = qemuMonitorJSONKeywordStringToJSON(netdevstr, "type");
if (!args)
goto cleanup;
if (virJSONValueObjectAppend(cmd, "arguments", args) < 0) {
virReportOOMError();
goto cleanup;
}
args = NULL; /* obj owns reference to args now */
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(args);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONRemoveNetdev(qemuMonitorPtr mon,
const char *alias)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("netdev_del",
"s:id", alias,
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
/*
* Example return data
*
* {"return": [
* {"filename": "stdio", "label": "monitor"},
* {"filename": "pty:/dev/pts/6", "label": "serial0"},
* {"filename": "pty:/dev/pts/7", "label": "parallel0"}
* ]}
*
*/
static int qemuMonitorJSONExtractPtyPaths(virJSONValuePtr reply,
virHashTablePtr paths)
{
virJSONValuePtr data;
int ret = -1;
int i;
if (!(data = virJSONValueObjectGet(reply, "return"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device reply was missing return data"));
goto cleanup;
}
if (data->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device information was not an array"));
goto cleanup;
}
for (i = 0 ; i < virJSONValueArraySize(data) ; i++) {
virJSONValuePtr entry = virJSONValueArrayGet(data, i);
const char *type;
const char *id;
if (!entry) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device information was missing array element"));
goto cleanup;
}
if (!(type = virJSONValueObjectGetString(entry, "filename"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device information was missing filename"));
goto cleanup;
}
if (!(id = virJSONValueObjectGetString(entry, "label"))) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("character device information was missing filename"));
goto cleanup;
}
if (STRPREFIX(type, "pty:")) {
char *path = strdup(type + strlen("pty:"));
if (!path) {
virReportOOMError();
goto cleanup;
}
if (virHashAddEntry(paths, id, path) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to save chardev path '%s'"), path);
VIR_FREE(path);
goto cleanup;
}
}
}
ret = 0;
cleanup:
return ret;
}
int qemuMonitorJSONGetPtyPaths(qemuMonitorPtr mon,
virHashTablePtr paths)
{
int ret;
virJSONValuePtr cmd = qemuMonitorJSONMakeCommand("query-chardev",
NULL);
virJSONValuePtr reply = NULL;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret == 0)
ret = qemuMonitorJSONExtractPtyPaths(reply, paths);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAttachPCIDiskController(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *bus ATTRIBUTE_UNUSED,
virDomainDevicePCIAddress *guestAddr ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("pci_add not suppported in JSON mode"));
return -1;
}
static int
qemuMonitorJSONGetGuestDriveAddress(virJSONValuePtr reply,
virDomainDeviceDriveAddress *driveAddr)
{
virJSONValuePtr addr;
addr = virJSONValueObjectGet(reply, "return");
if (!addr || addr->type != VIR_JSON_TYPE_OBJECT) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("drive_add reply was missing device address"));
return -1;
}
if (virJSONValueObjectGetNumberUint(addr, "bus", &driveAddr->bus) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("drive_add reply was missing device bus number"));
return -1;
}
if (virJSONValueObjectGetNumberUint(addr, "unit", &driveAddr->unit) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("drive_add reply was missing device unit number"));
return -1;
}
return 0;
}
int qemuMonitorJSONAttachDrive(qemuMonitorPtr mon,
const char *drivestr,
virDomainDevicePCIAddress* controllerAddr,
virDomainDeviceDriveAddress* driveAddr)
{
int ret;
virJSONValuePtr cmd = NULL;
virJSONValuePtr reply = NULL;
char *dev;
if (virAsprintf(&dev, "%.2x:%.2x.%.1x",
controllerAddr->bus, controllerAddr->slot, controllerAddr->function) < 0) {
virReportOOMError();
return -1;
}
cmd = qemuMonitorJSONMakeCommand("drive_add",
"s:pci_addr", dev,
"s:opts", drivestr,
NULL);
VIR_FREE(dev);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
if (ret == 0 &&
qemuMonitorJSONGetGuestDriveAddress(reply, driveAddr) < 0)
ret = -1;
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONGetAllPCIAddresses(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
qemuMonitorPCIAddress **addrs ATTRIBUTE_UNUSED)
{
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-pci not suppported in JSON mode"));
return -1;
}
int qemuMonitorJSONDelDevice(qemuMonitorPtr mon,
const char *devalias)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("device_del",
"s:id", devalias,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddDevice(qemuMonitorPtr mon,
const char *devicestr)
{
int ret = -1;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
virJSONValuePtr args;
cmd = qemuMonitorJSONMakeCommand("device_add", NULL);
if (!cmd)
return -1;
args = qemuMonitorJSONKeywordStringToJSON(devicestr, "driver");
if (!args)
goto cleanup;
if (virJSONValueObjectAppend(cmd, "arguments", args) < 0) {
virReportOOMError();
goto cleanup;
}
args = NULL; /* obj owns reference to args now */
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(args);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddDrive(qemuMonitorPtr mon,
const char *drivestr)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("drive_add",
"s:pci_addr", "dummy",
"s:opts", drivestr,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply) < 0))
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "drive_add")) {
VIR_DEBUG("drive_add command not found, trying HMP");
ret = qemuMonitorTextAddDrive(mon, drivestr);
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONDriveDel(qemuMonitorPtr mon,
const char *drivestr)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
VIR_DEBUG("JSONDriveDel drivestr=%s", drivestr);
cmd = qemuMonitorJSONMakeCommand("drive_del",
"s:id", drivestr,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
if (qemuMonitorCheckHMP(mon, "drive_del")) {
VIR_DEBUG("drive_del command not found, trying HMP");
ret = qemuMonitorTextDriveDel(mon, drivestr);
} else {
VIR_ERROR(_("deleting disk is not supported. "
"This may leak data if disk is reassigned"));
ret = 1;
}
} else if (qemuMonitorJSONHasError(reply, "DeviceNotFound")) {
/* NB: device not found errors mean the drive was
* auto-deleted and we ignore the error */
ret = 0;
} else {
ret = qemuMonitorJSONCheckError(cmd, reply);
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSetDrivePassphrase(qemuMonitorPtr mon,
const char *alias,
const char *passphrase)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
char *drive;
if (virAsprintf(&drive, "%s%s", QEMU_DRIVE_HOST_PREFIX, alias) < 0) {
virReportOOMError();
return -1;
}
cmd = qemuMonitorJSONMakeCommand("block_passwd",
"s:device", drive,
"s:password", passphrase,
NULL);
VIR_FREE(drive);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONCreateSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("savevm",
"s:name", name,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "savevm")) {
VIR_DEBUG("savevm command not found, trying HMP");
ret = qemuMonitorTextCreateSnapshot(mon, name);
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONLoadSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("loadvm",
"s:name", name,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "loadvm")) {
VIR_DEBUG("loadvm command not found, trying HMP");
ret = qemuMonitorTextLoadSnapshot(mon, name);
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONDeleteSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("delvm",
"s:name", name,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "delvm")) {
VIR_DEBUG("delvm command not found, trying HMP");
ret = qemuMonitorTextDeleteSnapshot(mon, name);
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int
qemuMonitorJSONDiskSnapshot(qemuMonitorPtr mon, const char *device,
const char *file)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("blockdev-snapshot-sync",
"s:device", device,
"s:snapshot-file", file,
NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "snapshot_blkdev")) {
VIR_DEBUG("blockdev-snapshot-sync command not found, trying HMP");
ret = qemuMonitorTextDiskSnapshot(mon, device, file);
goto cleanup;
}
ret = qemuMonitorJSONCheckError(cmd, reply);
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONArbitraryCommand(qemuMonitorPtr mon,
const char *cmd_str,
char **reply_str,
bool hmp)
{
virJSONValuePtr cmd = NULL;
virJSONValuePtr reply = NULL;
int ret = -1;
if (hmp) {
if (!qemuMonitorCheckHMP(mon, NULL)) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("HMP passthrough is not supported by qemu"
" process; only QMP commands can be used"));
return -1;
}
return qemuMonitorJSONHumanCommandWithFd(mon, cmd_str, -1, reply_str);
} else {
if (!(cmd = virJSONValueFromString(cmd_str)))
goto cleanup;
if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
goto cleanup;
if (!(*reply_str = virJSONValueToString(reply)))
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONInjectNMI(qemuMonitorPtr mon)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("inject-nmi", NULL);
if (!cmd)
return -1;
if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0)
goto cleanup;
if (qemuMonitorJSONHasError(reply, "CommandNotFound") &&
qemuMonitorCheckHMP(mon, "inject-nmi")) {
VIR_DEBUG("inject-nmi command not found, trying HMP");
ret = qemuMonitorTextInjectNMI(mon);
} else {
ret = qemuMonitorJSONCheckError(cmd, reply);
}
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONSendKey(qemuMonitorPtr mon,
unsigned int holdtime,
unsigned int *keycodes,
unsigned int nkeycodes)
{
/*
* FIXME: qmp sendkey has not been implemented yet,
* and qmp API of it cannot be anticipated, so we use hmp temporary.
*/
if (qemuMonitorCheckHMP(mon, "sendkey")) {
return qemuMonitorTextSendKey(mon, holdtime, keycodes, nkeycodes);
} else
return -1;
}
int qemuMonitorJSONScreendump(qemuMonitorPtr mon,
const char *file)
{
int ret;
virJSONValuePtr cmd, reply = NULL;
cmd = qemuMonitorJSONMakeCommand("screendump",
"s:filename", file,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
static int qemuMonitorJSONGetBlockJobInfoOne(virJSONValuePtr entry,
const char *device,
virDomainBlockJobInfoPtr info)
{
const char *this_dev;
const char *type;
unsigned long long speed_bytes;
if ((this_dev = virJSONValueObjectGetString(entry, "device")) == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("entry was missing 'device'"));
return -1;
}
if (!STREQ(this_dev, device))
return -1;
type = virJSONValueObjectGetString(entry, "type");
if (!type) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("entry was missing 'type'"));
return -1;
}
if (STREQ(type, "stream"))
info->type = VIR_DOMAIN_BLOCK_JOB_TYPE_PULL;
else
info->type = VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN;
if (virJSONValueObjectGetNumberUlong(entry, "speed", &speed_bytes) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("entry was missing 'speed'"));
return -1;
}
info->bandwidth = speed_bytes / 1024ULL / 1024ULL;
if (virJSONValueObjectGetNumberUlong(entry, "offset", &info->cur) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("entry was missing 'offset'"));
return -1;
}
if (virJSONValueObjectGetNumberUlong(entry, "len", &info->end) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("entry was missing 'len'"));
return -1;
}
return 0;
}
/** qemuMonitorJSONGetBlockJobInfo:
* Parse Block Job information.
* The reply is a JSON array of objects, one per active job.
*/
static int qemuMonitorJSONGetBlockJobInfo(virJSONValuePtr reply,
const char *device,
virDomainBlockJobInfoPtr info)
{
virJSONValuePtr data;
int nr_results, i;
if (!info)
return -1;
if ((data = virJSONValueObjectGet(reply, "return")) == NULL) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("reply was missing return data"));
return -1;
}
if (data->type != VIR_JSON_TYPE_ARRAY) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("urecognized format of block job information"));
return -1;
}
if ((nr_results = virJSONValueArraySize(data)) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to determine array size"));
return -1;
}
for (i = 0; i < nr_results; i++) {
virJSONValuePtr entry = virJSONValueArrayGet(data, i);
if (!entry) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing array element"));
return -1;
}
if (qemuMonitorJSONGetBlockJobInfoOne(entry, device, info) == 0)
return 1;
}
return 0;
}
int qemuMonitorJSONBlockJob(qemuMonitorPtr mon,
const char *device,
unsigned long bandwidth,
virDomainBlockJobInfoPtr info,
int mode)
{
int ret = -1;
virJSONValuePtr cmd = NULL;
virJSONValuePtr reply = NULL;
const char *cmd_name = NULL;
if (mode == BLOCK_JOB_ABORT) {
cmd_name = "block_job_cancel";
cmd = qemuMonitorJSONMakeCommand(cmd_name, "s:device", device, NULL);
} else if (mode == BLOCK_JOB_INFO) {
cmd_name = "query-block-jobs";
cmd = qemuMonitorJSONMakeCommand(cmd_name, NULL);
} else if (mode == BLOCK_JOB_SPEED) {
cmd_name = "block_job_set_speed";
cmd = qemuMonitorJSONMakeCommand(cmd_name, "s:device",
device, "U:value",
bandwidth * 1024ULL * 1024ULL,
NULL);
} else if (mode == BLOCK_JOB_PULL) {
cmd_name = "block_stream";
cmd = qemuMonitorJSONMakeCommand(cmd_name, "s:device",
device, NULL);
}
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0 && virJSONValueObjectHasKey(reply, "error")) {
if (qemuMonitorJSONHasError(reply, "DeviceNotActive"))
qemuReportError(VIR_ERR_OPERATION_INVALID,
_("No active operation on device: %s"), device);
else if (qemuMonitorJSONHasError(reply, "DeviceInUse"))
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("Device %s in use"), device);
else if (qemuMonitorJSONHasError(reply, "NotSupported"))
qemuReportError(VIR_ERR_OPERATION_INVALID,
_("Operation is not supported for device: %s"), device);
else if (qemuMonitorJSONHasError(reply, "CommandNotFound"))
qemuReportError(VIR_ERR_OPERATION_INVALID,
_("Command '%s' is not found"), cmd_name);
else
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unexpected error"));
ret = -1;
}
if (ret == 0 && mode == BLOCK_JOB_INFO)
ret = qemuMonitorJSONGetBlockJobInfo(reply, device, info);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONOpenGraphics(qemuMonitorPtr mon,
const char *protocol,
const char *fdname,
bool skipauth)
{
int ret;
virJSONValuePtr cmd, reply = NULL;
cmd = qemuMonitorJSONMakeCommand("add_client",
"s:protocol", protocol,
"s:fdname", fdname,
"b:skipauth", skipauth,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
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