/**
* qemuAgentGuestSync:
* @mon: Monitor
*
* Send guest-sync with unique ID
* and wait for reply. If we get one, check if
* received ID is equal to given.
*
* Returns: 0 on success,
* -1 otherwise
*/
static int
qemuAgentGuestSync(qemuAgentPtr mon)
{
int ret = -1;
int send_ret;
unsigned long long id, id_ret;
qemuAgentMessage sync_msg;
memset(&sync_msg, 0, sizeof(sync_msg));
if (virTimeMillisNow(&id) < 0)
return -1;
if (virAsprintf(&sync_msg.txBuffer,
"{\"execute\":\"guest-sync\", "
"\"arguments\":{\"id\":%llu}}", id) < 0) {
virReportOOMError();
return -1;
}
sync_msg.txLength = strlen(sync_msg.txBuffer);
VIR_DEBUG("Sending guest-sync command with ID: %llu", id);
send_ret = qemuAgentSend(mon, &sync_msg, true);
VIR_DEBUG("qemuAgentSend returned: %d", send_ret);
if (send_ret < 0) {
/* error reported */
goto cleanup;
}
if (!sync_msg.rxObject) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Missing monitor reply object"));
goto cleanup;
}
if (virJSONValueObjectGetNumberUlong(sync_msg.rxObject,
"return", &id_ret) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Malformed return value"));
goto cleanup;
}
VIR_DEBUG("Guest returned ID: %llu", id_ret);
if (id_ret != id) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("Guest agent returned ID: %llu instead of %llu"),
id_ret, id);
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(sync_msg.rxObject);
VIR_FREE(sync_msg.txBuffer);
return ret;
}
static int
qemuAgentCommand(qemuAgentPtr mon,
virJSONValuePtr cmd,
virJSONValuePtr *reply,
int seconds)
{
int ret = -1;
qemuAgentMessage msg;
char *cmdstr = NULL;
int await_event = mon->await_event;
*reply = NULL;
if (qemuAgentGuestSync(mon) < 0) {
/* helper reported the error */
return -1;
}
memset(&msg, 0, sizeof(msg));
if (!(cmdstr = virJSONValueToString(cmd, false))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&msg.txBuffer, "%s" LINE_ENDING, cmdstr) < 0) {
virReportOOMError();
goto cleanup;
}
msg.txLength = strlen(msg.txBuffer);
VIR_DEBUG("Send command '%s' for write, seconds = %d", cmdstr, seconds);
ret = qemuAgentSend(mon, &msg, seconds);
VIR_DEBUG("Receive command reply ret=%d rxObject=%p",
ret, msg.rxObject);
if (ret == 0) {
/* If we haven't obtained any reply but we wait for an
* event, then don't report this as error */
if (!msg.rxObject) {
if (await_event) {
VIR_DEBUG("Woken up by event %d", await_event);
} else {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Missing monitor reply object"));
ret = -1;
}
} else {
*reply = msg.rxObject;
}
}
cleanup:
VIR_FREE(cmdstr);
VIR_FREE(msg.txBuffer);
return ret;
}
static int
qemuAgentCommand(qemuAgentPtr mon,
virJSONValuePtr cmd,
virJSONValuePtr *reply)
{
int ret = -1;
qemuAgentMessage msg;
char *cmdstr = NULL;
*reply = NULL;
if (qemuAgentGuestSync(mon) < 0) {
/* helper reported the error */
return -1;
}
memset(&msg, 0, sizeof(msg));
if (!(cmdstr = virJSONValueToString(cmd))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&msg.txBuffer, "%s" LINE_ENDING, cmdstr) < 0) {
virReportOOMError();
goto cleanup;
}
msg.txLength = strlen(msg.txBuffer);
VIR_DEBUG("Send command '%s' for write", cmdstr);
ret = qemuAgentSend(mon, &msg, false);
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(cmdstr);
VIR_FREE(msg.txBuffer);
return ret;
}
