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libvirt/src/qemu/qemu_monitor.c
Pavel Hrdina c1b8d87bab qemu_monitor: rephrase error message if qemu closes monitor 
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-08 13:50:31 +02:00

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/*
* qemu_monitor.c: interaction with QEMU monitor console
*
* Copyright (C) 2006-2015 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, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <poll.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <fcntl.h>
#include "qemu_monitor.h"
#include "qemu_monitor_text.h"
#include "qemu_monitor_json.h"
#include "qemu_domain.h"
#include "qemu_process.h"
#include "virerror.h"
#include "viralloc.h"
#include "virlog.h"
#include "virfile.h"
#include "virprocess.h"
#include "virobject.h"
#include "virprobe.h"
#include "virstring.h"
#include "virtime.h"
#ifdef WITH_DTRACE_PROBES
# include "libvirt_qemu_probes.h"
#endif
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_LOG_INIT("qemu.qemu_monitor");
#define DEBUG_IO 0
#define DEBUG_RAW_IO 0
struct _qemuMonitor {
virObjectLockable parent;
virCond notify;
int fd;
int watch;
int hasSendFD;
virDomainObjPtr vm;
qemuMonitorCallbacksPtr cb;
void *callbackOpaque;
/* If there's a command being processed this will be
* non-NULL */
qemuMonitorMessagePtr msg;
/* Buffer incoming data ready for Text/QMP monitor
* code to process & find message boundaries */
size_t bufferOffset;
size_t bufferLength;
char *buffer;
/* If anything went wrong, this will be fed back
* the next monitor msg */
virError lastError;
int nextSerial;
bool json;
bool waitGreeting;
/* cache of query-command-line-options results */
virJSONValuePtr options;
/* If found, path to the virtio memballoon driver */
char *balloonpath;
bool ballooninit;
/* Log file context of the qemu process to dig for usable info */
qemuMonitorReportDomainLogError logFunc;
void *logOpaque;
virFreeCallback logDestroy;
};
/**
* QEMU_CHECK_MONITOR_FULL:
* @mon: monitor pointer variable to check, evaluated multiple times, no parentheses
* @force_json: force JSON monitor, true or false
* @exit: statement that is used to exit the function
*
* This macro checks that the monitor is valid for given operation and exits
* the function if not. The macro also adds a debug statement regarding the
* monitor.
*/
#define QEMU_CHECK_MONITOR_FULL(mon, force_json, exit) \
if (!mon) { \
virReportError(VIR_ERR_INVALID_ARG, "%s", \
_("monitor must not be NULL")); \
exit; \
} \
VIR_DEBUG("mon:%p vm:%p json:%d fd:%d", mon, mon->vm, mon->json, mon->fd); \
if (force_json && !mon->json) { \
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", \
_("JSON monitor is required")); \
exit; \
}
/* Check monitor and return NULL on error */
#define QEMU_CHECK_MONITOR_NULL(mon) \
QEMU_CHECK_MONITOR_FULL(mon, false, return NULL)
#define QEMU_CHECK_MONITOR_JSON_NULL(mon) \
QEMU_CHECK_MONITOR_FULL(mon, true, return NULL)
/* Check monitor and return -1 on error */
#define QEMU_CHECK_MONITOR(mon) \
QEMU_CHECK_MONITOR_FULL(mon, false, return -1)
#define QEMU_CHECK_MONITOR_JSON(mon) \
QEMU_CHECK_MONITOR_FULL(mon, true, return -1)
/* Check monitor and jump to the provided label */
#define QEMU_CHECK_MONITOR_GOTO(mon, label) \
QEMU_CHECK_MONITOR_FULL(mon, false, goto label)
#define QEMU_CHECK_MONITOR_JSON_GOTO(mon, label) \
QEMU_CHECK_MONITOR_FULL(mon, true, goto label)
static virClassPtr qemuMonitorClass;
static void qemuMonitorDispose(void *obj);
static int qemuMonitorOnceInit(void)
{
if (!(qemuMonitorClass = virClassNew(virClassForObjectLockable(),
"qemuMonitor",
sizeof(qemuMonitor),
qemuMonitorDispose)))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(qemuMonitor)
VIR_ENUM_IMPL(qemuMonitorMigrationStatus,
QEMU_MONITOR_MIGRATION_STATUS_LAST,
"inactive", "setup",
"active", "postcopy-active",
"completed", "failed",
"cancelling", "cancelled")
VIR_ENUM_IMPL(qemuMonitorMigrationCaps,
QEMU_MONITOR_MIGRATION_CAPS_LAST,
"xbzrle", "auto-converge", "rdma-pin-all", "events",
"postcopy-ram", "compress")
VIR_ENUM_IMPL(qemuMonitorVMStatus,
QEMU_MONITOR_VM_STATUS_LAST,
"debug", "inmigrate", "internal-error", "io-error", "paused",
"postmigrate", "prelaunch", "finish-migrate", "restore-vm",
"running", "save-vm", "shutdown", "watchdog", "guest-panicked")
typedef enum {
QEMU_MONITOR_BLOCK_IO_STATUS_OK,
QEMU_MONITOR_BLOCK_IO_STATUS_FAILED,
QEMU_MONITOR_BLOCK_IO_STATUS_NOSPACE,
QEMU_MONITOR_BLOCK_IO_STATUS_LAST
} qemuMonitorBlockIOStatus;
VIR_ENUM_DECL(qemuMonitorBlockIOStatus)
VIR_ENUM_IMPL(qemuMonitorBlockIOStatus,
QEMU_MONITOR_BLOCK_IO_STATUS_LAST,
"ok", "failed", "nospace")
char *
qemuMonitorEscapeArg(const char *in)
{
int len = 0;
size_t i, j;
char *out;
/* To pass through the QEMU monitor, we need to use escape
sequences: \r, \n, \", \\
*/
for (i = 0; in[i] != '\0'; i++) {
switch (in[i]) {
case '\r':
case '\n':
case '"':
case '\\':
len += 2;
break;
default:
len += 1;
break;
}
}
if (VIR_ALLOC_N(out, len + 1) < 0)
return NULL;
for (i = j = 0; in[i] != '\0'; i++) {
switch (in[i]) {
case '\r':
out[j++] = '\\';
out[j++] = 'r';
break;
case '\n':
out[j++] = '\\';
out[j++] = 'n';
break;
case '"':
case '\\':
out[j++] = '\\';
out[j++] = in[i];
break;
default:
out[j++] = in[i];
break;
}
}
out[j] = '\0';
return out;
}
char *
qemuMonitorUnescapeArg(const char *in)
{
size_t i, j;
char *out;
int len = strlen(in);
char next;
if (VIR_ALLOC_N(out, len + 1) < 0)
return NULL;
for (i = j = 0; i < len; ++i) {
next = in[i];
if (in[i] == '\\') {
++i;
switch (in[i]) {
case 'r':
next = '\r';
break;
case 'n':
next = '\n';
break;
case '"':
case '\\':
next = in[i];
break;
default:
/* invalid input (including trailing '\' at end of in) */
VIR_FREE(out);
return NULL;
}
}
out[j++] = next;
}
out[j] = '\0';
return out;
}
#if DEBUG_RAW_IO
# include <c-ctype.h>
static char *
qemuMonitorEscapeNonPrintable(const char *text)
{
size_t i;
virBuffer buf = VIR_BUFFER_INITIALIZER;
for (i = 0; text[i] != '\0'; i++) {
if (c_isprint(text[i]) ||
text[i] == '\n' ||
(text[i] == '\r' && text[i + 1] == '\n'))
virBufferAddChar(&buf, text[i]);
else
virBufferAsprintf(&buf, "0x%02x", text[i]);
}
return virBufferContentAndReset(&buf);
}
#endif
static void
qemuMonitorDispose(void *obj)
{
qemuMonitorPtr mon = obj;
VIR_DEBUG("mon=%p", mon);
if (mon->cb && mon->cb->destroy)
(mon->cb->destroy)(mon, mon->vm, mon->callbackOpaque);
virObjectUnref(mon->vm);
virResetError(&mon->lastError);
virCondDestroy(&mon->notify);
VIR_FREE(mon->buffer);
virJSONValueFree(mon->options);
VIR_FREE(mon->balloonpath);
}
static int
qemuMonitorOpenUnix(const char *monitor, pid_t cpid)
{
struct sockaddr_un addr;
int monfd;
virTimeBackOffVar timeout;
int ret = -1;
if ((monfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
virReportSystemError(errno,
"%s", _("failed to create socket"));
return -1;
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
if (virStrcpyStatic(addr.sun_path, monitor) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Monitor path %s too big for destination"), monitor);
goto error;
}
if (virTimeBackOffStart(&timeout, 1, 30*1000 /* ms */) < 0)
goto error;
while (virTimeBackOffWait(&timeout)) {
ret = connect(monfd, (struct sockaddr *) &addr, sizeof(addr));
if (ret == 0)
break;
if ((errno == ENOENT || errno == ECONNREFUSED) &&
(!cpid || virProcessKill(cpid, 0) == 0)) {
/* ENOENT : Socket may not have shown up yet
* ECONNREFUSED : Leftover socket hasn't been removed yet */
continue;
}
virReportSystemError(errno, "%s",
_("failed to connect to monitor socket"));
goto error;
}
if (ret != 0) {
virReportSystemError(errno, "%s",
_("monitor socket did not show up"));
goto error;
}
return monfd;
error:
VIR_FORCE_CLOSE(monfd);
return -1;
}
static int
qemuMonitorOpenPty(const char *monitor)
{
int monfd;
if ((monfd = open(monitor, O_RDWR)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to open monitor path %s"), monitor);
return -1;
}
return monfd;
}
/* This method processes data that has been received
* from the monitor. Looking for async events and
* replies/errors.
*/
static int
qemuMonitorIOProcess(qemuMonitorPtr mon)
{
int len;
qemuMonitorMessagePtr msg = NULL;
/* See if there's a message & whether its ready for its reply
* ie whether its completed writing all its data */
if (mon->msg && mon->msg->txOffset == mon->msg->txLength)
msg = mon->msg;
#if DEBUG_IO
# if DEBUG_RAW_IO
char *str1 = qemuMonitorEscapeNonPrintable(msg ? msg->txBuffer : "");
char *str2 = qemuMonitorEscapeNonPrintable(mon->buffer);
VIR_ERROR(_("Process %d %p %p [[[[%s]]][[[%s]]]"), (int)mon->bufferOffset, mon->msg, msg, str1, str2);
VIR_FREE(str1);
VIR_FREE(str2);
# else
VIR_DEBUG("Process %d", (int)mon->bufferOffset);
# endif
#endif
PROBE(QEMU_MONITOR_IO_PROCESS,
"mon=%p buf=%s len=%zu", mon, mon->buffer, mon->bufferOffset);
if (mon->json)
len = qemuMonitorJSONIOProcess(mon,
mon->buffer, mon->bufferOffset,
msg);
else
len = qemuMonitorTextIOProcess(mon,
mon->buffer, mon->bufferOffset,
msg);
if (len < 0)
return -1;
if (len && mon->waitGreeting)
mon->waitGreeting = false;
if (len < mon->bufferOffset) {
memmove(mon->buffer, mon->buffer + len, mon->bufferOffset - len);
mon->bufferOffset -= len;
} else {
VIR_FREE(mon->buffer);
mon->bufferOffset = mon->bufferLength = 0;
}
#if DEBUG_IO
VIR_DEBUG("Process done %d used %d", (int)mon->bufferOffset, len);
#endif
if (msg && msg->finished)
virCondBroadcast(&mon->notify);
return len;
}
/* Call this function while holding the monitor lock. */
static int
qemuMonitorIOWriteWithFD(qemuMonitorPtr mon,
const char *data,
size_t len,
int fd)
{
struct msghdr msg;
struct iovec iov[1];
int ret;
char control[CMSG_SPACE(sizeof(int))];
struct cmsghdr *cmsg;
memset(&msg, 0, sizeof(msg));
memset(control, 0, sizeof(control));
iov[0].iov_base = (void *)data;
iov[0].iov_len = len;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
msg.msg_control = control;
msg.msg_controllen = sizeof(control);
cmsg = CMSG_FIRSTHDR(&msg);
/* Some static analyzers, like clang 2.6-0.6.pre2, fail to see
that our use of CMSG_FIRSTHDR will not return NULL. */
sa_assert(cmsg);
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
do {
ret = sendmsg(mon->fd, &msg, 0);
} while (ret < 0 && errno == EINTR);
return ret;
}
/*
* Called when the monitor is able to write data
* Call this function while holding the monitor lock.
*/
static int
qemuMonitorIOWrite(qemuMonitorPtr mon)
{
int done;
char *buf;
size_t len;
/* If no active message, or fully transmitted, the no-op */
if (!mon->msg || mon->msg->txOffset == mon->msg->txLength)
return 0;
if (mon->msg->txFD != -1 && !mon->hasSendFD) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Monitor does not support sending of file descriptors"));
return -1;
}
buf = mon->msg->txBuffer + mon->msg->txOffset;
len = mon->msg->txLength - mon->msg->txOffset;
if (mon->msg->txFD == -1)
done = write(mon->fd, buf, len);
else
done = qemuMonitorIOWriteWithFD(mon, buf, len, mon->msg->txFD);
PROBE(QEMU_MONITOR_IO_WRITE,
"mon=%p buf=%s len=%zu ret=%d errno=%d",
mon, buf, len, done, errno);
if (mon->msg->txFD != -1) {
PROBE(QEMU_MONITOR_IO_SEND_FD,
"mon=%p fd=%d ret=%d errno=%d",
mon, mon->msg->txFD, done, errno);
}
if (done < 0) {
if (errno == EAGAIN)
return 0;
virReportSystemError(errno, "%s",
_("Unable to write to monitor"));
return -1;
}
mon->msg->txOffset += done;
return done;
}
/*
* Called when the monitor has incoming data to read
* Call this function while holding the monitor lock.
*
* Returns -1 on error, or number of bytes read
*/
static int
qemuMonitorIORead(qemuMonitorPtr mon)
{
size_t avail = mon->bufferLength - mon->bufferOffset;
int ret = 0;
if (avail < 1024) {
if (VIR_REALLOC_N(mon->buffer,
mon->bufferLength + 1024) < 0)
return -1;
mon->bufferLength += 1024;
avail += 1024;
}
/* Read as much as we can get into our buffer,
until we block on EAGAIN, or hit EOF */
while (avail > 1) {
int got;
got = read(mon->fd,
mon->buffer + mon->bufferOffset,
avail - 1);
if (got < 0) {
if (errno == EAGAIN)
break;
virReportSystemError(errno, "%s",
_("Unable to read from monitor"));
ret = -1;
break;
}
if (got == 0)
break;
ret += got;
avail -= got;
mon->bufferOffset += got;
mon->buffer[mon->bufferOffset] = '\0';
}
#if DEBUG_IO
VIR_DEBUG("Now read %d bytes of data", (int)mon->bufferOffset);
#endif
return ret;
}
static void
qemuMonitorUpdateWatch(qemuMonitorPtr mon)
{
int events =
VIR_EVENT_HANDLE_HANGUP |
VIR_EVENT_HANDLE_ERROR;
if (!mon->watch)
return;
if (mon->lastError.code == VIR_ERR_OK) {
events |= VIR_EVENT_HANDLE_READABLE;
if ((mon->msg && mon->msg->txOffset < mon->msg->txLength) &&
!mon->waitGreeting)
events |= VIR_EVENT_HANDLE_WRITABLE;
}
virEventUpdateHandle(mon->watch, events);
}
static void
qemuMonitorIO(int watch, int fd, int events, void *opaque)
{
qemuMonitorPtr mon = opaque;
bool error = false;
bool eof = false;
bool hangup = false;
virObjectRef(mon);
/* lock access to the monitor and protect fd */
virObjectLock(mon);
#if DEBUG_IO
VIR_DEBUG("Monitor %p I/O on watch %d fd %d events %d", mon, watch, fd, events);
#endif
if (mon->fd == -1 || mon->watch == 0) {
virObjectUnlock(mon);
virObjectUnref(mon);
return;
}
if (mon->fd != fd || mon->watch != watch) {
if (events & (VIR_EVENT_HANDLE_HANGUP | VIR_EVENT_HANDLE_ERROR))
eof = true;
virReportError(VIR_ERR_INTERNAL_ERROR,
_("event from unexpected fd %d!=%d / watch %d!=%d"),
mon->fd, fd, mon->watch, watch);
error = true;
} else if (mon->lastError.code != VIR_ERR_OK) {
if (events & (VIR_EVENT_HANDLE_HANGUP | VIR_EVENT_HANDLE_ERROR))
eof = true;
error = true;
} else {
if (events & VIR_EVENT_HANDLE_WRITABLE) {
if (qemuMonitorIOWrite(mon) < 0) {
error = true;
if (errno == ECONNRESET)
hangup = true;
}
events &= ~VIR_EVENT_HANDLE_WRITABLE;
}
if (!error &&
events & VIR_EVENT_HANDLE_READABLE) {
int got = qemuMonitorIORead(mon);
events &= ~VIR_EVENT_HANDLE_READABLE;
if (got < 0) {
error = true;
if (errno == ECONNRESET)
hangup = true;
} else if (got == 0) {
eof = true;
} else {
/* Ignore hangup/error events if we read some data, to
* give time for that data to be consumed */
events = 0;
if (qemuMonitorIOProcess(mon) < 0)
error = true;
}
}
if (events & VIR_EVENT_HANDLE_HANGUP) {
hangup = true;
if (!error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("End of file from monitor"));
eof = true;
events &= ~VIR_EVENT_HANDLE_HANGUP;
}
}
if (!error && !eof &&
events & VIR_EVENT_HANDLE_ERROR) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Invalid file descriptor while waiting for monitor"));
eof = true;
events &= ~VIR_EVENT_HANDLE_ERROR;
}
if (!error && events) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unhandled event %d for monitor fd %d"),
events, mon->fd);
error = true;
}
}
if (error || eof) {
if (hangup && mon->logFunc != NULL) {
/* Check if an error message from qemu is available and if so, use
* it to overwrite the actual message. It's done only in early
* startup phases or during incoming migration when the message
* from qemu is certainly more interesting than a
* "connection reset by peer" message.
*/
mon->logFunc(mon,
_("qemu unexpectedly closed the monitor"),
mon->logOpaque);
virCopyLastError(&mon->lastError);
virResetLastError();
}
if (mon->lastError.code != VIR_ERR_OK) {
/* Already have an error, so clear any new error */
virResetLastError();
} else {
virErrorPtr err = virGetLastError();
if (!err)
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Error while processing monitor IO"));
virCopyLastError(&mon->lastError);
virResetLastError();
}
VIR_DEBUG("Error on monitor %s", NULLSTR(mon->lastError.message));
/* If IO process resulted in an error & we have a message,
* then wakeup that waiter */
if (mon->msg && !mon->msg->finished) {
mon->msg->finished = 1;
virCondSignal(&mon->notify);
}
}
qemuMonitorUpdateWatch(mon);
/* We have to unlock to avoid deadlock against command thread,
* but is this safe ? I think it is, because the callback
* will try to acquire the virDomainObjPtr mutex next */
if (eof) {
qemuMonitorEofNotifyCallback eofNotify = mon->cb->eofNotify;
virDomainObjPtr vm = mon->vm;
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
virObjectUnlock(mon);
VIR_DEBUG("Triggering EOF callback");
(eofNotify)(mon, vm, mon->callbackOpaque);
virObjectUnref(mon);
} else if (error) {
qemuMonitorErrorNotifyCallback errorNotify = mon->cb->errorNotify;
virDomainObjPtr vm = mon->vm;
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
virObjectUnlock(mon);
VIR_DEBUG("Triggering error callback");
(errorNotify)(mon, vm, mon->callbackOpaque);
virObjectUnref(mon);
} else {
virObjectUnlock(mon);
virObjectUnref(mon);
}
}
static qemuMonitorPtr
qemuMonitorOpenInternal(virDomainObjPtr vm,
int fd,
bool hasSendFD,
bool json,
qemuMonitorCallbacksPtr cb,
void *opaque)
{
qemuMonitorPtr mon;
if (!cb->eofNotify) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("EOF notify callback must be supplied"));
return NULL;
}
if (!cb->errorNotify) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Error notify callback must be supplied"));
return NULL;
}
if (qemuMonitorInitialize() < 0)
return NULL;
if (!(mon = virObjectLockableNew(qemuMonitorClass)))
return NULL;
if (virCondInit(&mon->notify) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot initialize monitor condition"));
goto cleanup;
}
mon->fd = fd;
mon->hasSendFD = hasSendFD;
mon->vm = virObjectRef(vm);
mon->json = json;
if (json)
mon->waitGreeting = true;
mon->cb = cb;
mon->callbackOpaque = opaque;
if (virSetCloseExec(mon->fd) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Unable to set monitor close-on-exec flag"));
goto cleanup;
}
if (virSetNonBlock(mon->fd) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Unable to put monitor into non-blocking mode"));
goto cleanup;
}
virObjectLock(mon);
virObjectRef(mon);
if ((mon->watch = virEventAddHandle(mon->fd,
VIR_EVENT_HANDLE_HANGUP |
VIR_EVENT_HANDLE_ERROR |
VIR_EVENT_HANDLE_READABLE,
qemuMonitorIO,
mon,
virObjectFreeCallback)) < 0) {
virObjectUnref(mon);
virObjectUnlock(mon);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to register monitor events"));
goto cleanup;
}
PROBE(QEMU_MONITOR_NEW,
"mon=%p refs=%d fd=%d",
mon, mon->parent.parent.u.s.refs, mon->fd);
virObjectUnlock(mon);
return mon;
cleanup:
/* We don't want the 'destroy' callback invoked during
* cleanup from construction failure, because that can
* give a double-unref on virDomainObjPtr in the caller,
* so kill the callbacks now.
*/
mon->cb = NULL;
/* The caller owns 'fd' on failure */
mon->fd = -1;
qemuMonitorClose(mon);
return NULL;
}
qemuMonitorPtr
qemuMonitorOpen(virDomainObjPtr vm,
virDomainChrSourceDefPtr config,
bool json,
qemuMonitorCallbacksPtr cb,
void *opaque)
{
int fd;
bool hasSendFD = false;
qemuMonitorPtr ret;
switch (config->type) {
case VIR_DOMAIN_CHR_TYPE_UNIX:
hasSendFD = true;
if ((fd = qemuMonitorOpenUnix(config->data.nix.path, vm ? vm->pid : 0)) < 0)
return NULL;
break;
case VIR_DOMAIN_CHR_TYPE_PTY:
if ((fd = qemuMonitorOpenPty(config->data.file.path)) < 0)
return NULL;
break;
default:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to handle monitor type: %s"),
virDomainChrTypeToString(config->type));
return NULL;
}
ret = qemuMonitorOpenInternal(vm, fd, hasSendFD, json, cb, opaque);
if (!ret)
VIR_FORCE_CLOSE(fd);
return ret;
}
qemuMonitorPtr
qemuMonitorOpenFD(virDomainObjPtr vm,
int sockfd,
bool json,
qemuMonitorCallbacksPtr cb,
void *opaque)
{
return qemuMonitorOpenInternal(vm, sockfd, true, json, cb, opaque);
}
void
qemuMonitorUnregister(qemuMonitorPtr mon)
{
if (mon->watch) {
virEventRemoveHandle(mon->watch);
mon->watch = 0;
}
}
void
qemuMonitorClose(qemuMonitorPtr mon)
{
if (!mon)
return;
virObjectLock(mon);
PROBE(QEMU_MONITOR_CLOSE,
"mon=%p refs=%d", mon, mon->parent.parent.u.s.refs);
qemuMonitorSetDomainLog(mon, NULL, NULL, NULL);
if (mon->fd >= 0) {
qemuMonitorUnregister(mon);
VIR_FORCE_CLOSE(mon->fd);
}
/* In case another thread is waiting for its monitor command to be
* processed, we need to wake it up with appropriate error set.
*/
if (mon->msg) {
if (mon->lastError.code == VIR_ERR_OK) {
virErrorPtr err = virSaveLastError();
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Qemu monitor was closed"));
virCopyLastError(&mon->lastError);
if (err) {
virSetError(err);
virFreeError(err);
} else {
virResetLastError();
}
}
mon->msg->finished = 1;
virCondSignal(&mon->notify);
}
/* Propagate existing monitor error in case the current thread has no
* error set.
*/
if (mon->lastError.code != VIR_ERR_OK && !virGetLastError())
virSetError(&mon->lastError);
virObjectUnlock(mon);
virObjectUnref(mon);
}
char *
qemuMonitorNextCommandID(qemuMonitorPtr mon)
{
char *id;
ignore_value(virAsprintf(&id, "libvirt-%d", ++mon->nextSerial));
return id;
}
int
qemuMonitorSend(qemuMonitorPtr mon,
qemuMonitorMessagePtr msg)
{
int ret = -1;
/* Check whether qemu quit unexpectedly */
if (mon->lastError.code != VIR_ERR_OK) {
VIR_DEBUG("Attempt to send command while error is set %s",
NULLSTR(mon->lastError.message));
virSetError(&mon->lastError);
return -1;
}
mon->msg = msg;
qemuMonitorUpdateWatch(mon);
PROBE(QEMU_MONITOR_SEND_MSG,
"mon=%p msg=%s fd=%d",
mon, mon->msg->txBuffer, mon->msg->txFD);
while (!mon->msg->finished) {
if (virCondWait(&mon->notify, &mon->parent.lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to wait on monitor condition"));
goto cleanup;
}
}
if (mon->lastError.code != VIR_ERR_OK) {
VIR_DEBUG("Send command resulted in error %s",
NULLSTR(mon->lastError.message));
virSetError(&mon->lastError);
goto cleanup;
}
ret = 0;
cleanup:
mon->msg = NULL;
qemuMonitorUpdateWatch(mon);
return ret;
}
/**
* This function returns a new virError object; the caller is responsible
* for freeing it.
*/
virErrorPtr
qemuMonitorLastError(qemuMonitorPtr mon)
{
if (mon->lastError.code == VIR_ERR_OK)
return NULL;
return virErrorCopyNew(&mon->lastError);
}
virJSONValuePtr
qemuMonitorGetOptions(qemuMonitorPtr mon)
{
return mon->options;
}
void
qemuMonitorSetOptions(qemuMonitorPtr mon, virJSONValuePtr options)
{
mon->options = options;
}
/**
* Search the qom objects for the balloon driver object by its known names
* of "virtio-balloon-pci" or "virtio-balloon-ccw". The entry for the driver
* will be found by using function "qemuMonitorJSONFindLinkPath".
*
* Once found, check the entry to ensure it has the correct property listed.
* If it does not, then obtaining statistics from QEMU will not be possible.
* This feature was added to QEMU 1.5.
*/
static void
qemuMonitorInitBalloonObjectPath(qemuMonitorPtr mon)
{
ssize_t i, nprops = 0;
int flp_ret = 0;
char *path = NULL;
qemuMonitorJSONListPathPtr *bprops = NULL;
if (mon->balloonpath) {
return;
} else if (mon->ballooninit) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot determine balloon device path"));
return;
}
mon->ballooninit = true;
flp_ret = qemuMonitorJSONFindLinkPath(mon, "virtio-balloon-pci", &path);
if (flp_ret == -2) {
/* pci object was not found retry search for ccw object */
if (qemuMonitorJSONFindLinkPath(mon, "virtio-balloon-ccw", &path) < 0)
return;
} else if (flp_ret < 0) {
return;
}
nprops = qemuMonitorJSONGetObjectListPaths(mon, path, &bprops);
if (nprops < 0)
goto cleanup;
for (i = 0; i < nprops; i++) {
if (STREQ(bprops[i]->name, "guest-stats-polling-interval")) {
VIR_DEBUG("Found Balloon Object Path %s", path);
mon->balloonpath = path;
path = NULL;
goto cleanup;
}
}
/* If we get here, we found the path, but not the property */
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Property 'guest-stats-polling-interval' "
"not found on memory balloon driver."));
cleanup:
for (i = 0; i < nprops; i++)
qemuMonitorJSONListPathFree(bprops[i]);
VIR_FREE(bprops);
VIR_FREE(path);
return;
}
/**
* To update video memory size in status XML we need to load correct values from
* QEMU. This is supported only with JSON monitor.
*
* Returns 0 on success, -1 on failure and sets proper error message.
*/
int
qemuMonitorUpdateVideoMemorySize(qemuMonitorPtr mon,
virDomainVideoDefPtr video,
const char *videoName)
{
int ret = -1;
char *path = NULL;
QEMU_CHECK_MONITOR(mon);
if (mon->json) {
ret = qemuMonitorJSONFindLinkPath(mon, videoName, &path);
if (ret < 0) {
if (ret == -2)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to find QOM Object path for "
"device '%s'"), videoName);
return -1;
}
ret = qemuMonitorJSONUpdateVideoMemorySize(mon, video, path);
VIR_FREE(path);
return ret;
}
return 0;
}
/**
* To update video vram64 size in status XML we need to load correct value from
* QEMU. This is supported only with JSON monitor.
*
* Returns 0 on success, -1 on failure and sets proper error message.
*/
int
qemuMonitorUpdateVideoVram64Size(qemuMonitorPtr mon,
virDomainVideoDefPtr video,
const char *videoName)
{
int ret = -1;
char *path = NULL;
QEMU_CHECK_MONITOR(mon);
if (mon->json) {
ret = qemuMonitorJSONFindLinkPath(mon, videoName, &path);
if (ret < 0) {
if (ret == -2)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to find QOM Object path for "
"device '%s'"), videoName);
return -1;
}
ret = qemuMonitorJSONUpdateVideoVram64Size(mon, video, path);
VIR_FREE(path);
return ret;
}
return 0;
}
int
qemuMonitorHMPCommandWithFd(qemuMonitorPtr mon,
const char *cmd,
int scm_fd,
char **reply)
{
char *json_cmd = NULL;
int ret = -1;
QEMU_CHECK_MONITOR(mon);
if (mon->json) {
/* hack to avoid complicating each call to text monitor functions */
json_cmd = qemuMonitorUnescapeArg(cmd);
if (!json_cmd) {
VIR_DEBUG("Could not unescape command: %s", cmd);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to unescape command"));
goto cleanup;
}
ret = qemuMonitorJSONHumanCommandWithFd(mon, json_cmd, scm_fd, reply);
} else {
ret = qemuMonitorTextCommandWithFd(mon, cmd, scm_fd, reply);
}
cleanup:
VIR_FREE(json_cmd);
return ret;
}
/* Ensure proper locking around callbacks. */
#define QEMU_MONITOR_CALLBACK(mon, ret, callback, ...) \
do { \
virObjectRef(mon); \
virObjectUnlock(mon); \
if ((mon)->cb && (mon)->cb->callback) \
(ret) = (mon)->cb->callback(mon, __VA_ARGS__, \
(mon)->callbackOpaque); \
virObjectLock(mon); \
virObjectUnref(mon); \
} while (0)
int
qemuMonitorGetDiskSecret(qemuMonitorPtr mon,
virConnectPtr conn,
const char *path,
char **secret,
size_t *secretLen)
{
int ret = -1;
*secret = NULL;
*secretLen = 0;
QEMU_MONITOR_CALLBACK(mon, ret, diskSecretLookup, conn, mon->vm,
path, secret, secretLen);
return ret;
}
int
qemuMonitorEmitEvent(qemuMonitorPtr mon, const char *event,
long long seconds, unsigned int micros,
const char *details)
{
int ret = -1;
VIR_DEBUG("mon=%p event=%s", mon, event);
QEMU_MONITOR_CALLBACK(mon, ret, domainEvent, mon->vm, event, seconds,
micros, details);
return ret;
}
int
qemuMonitorEmitShutdown(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainShutdown, mon->vm);
return ret;
}
int
qemuMonitorEmitReset(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainReset, mon->vm);
return ret;
}
int
qemuMonitorEmitPowerdown(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainPowerdown, mon->vm);
return ret;
}
int
qemuMonitorEmitStop(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainStop, mon->vm);
return ret;
}
int
qemuMonitorEmitResume(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainResume, mon->vm);
return ret;
}
int
qemuMonitorEmitGuestPanic(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainGuestPanic, mon->vm);
return ret;
}
int
qemuMonitorEmitRTCChange(qemuMonitorPtr mon, long long offset)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainRTCChange, mon->vm, offset);
return ret;
}
int
qemuMonitorEmitWatchdog(qemuMonitorPtr mon, int action)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainWatchdog, mon->vm, action);
return ret;
}
int
qemuMonitorEmitIOError(qemuMonitorPtr mon,
const char *diskAlias,
int action,
const char *reason)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainIOError, mon->vm,
diskAlias, action, reason);
return ret;
}
int
qemuMonitorEmitGraphics(qemuMonitorPtr mon,
int phase,
int localFamily,
const char *localNode,
const char *localService,
int remoteFamily,
const char *remoteNode,
const char *remoteService,
const char *authScheme,
const char *x509dname,
const char *saslUsername)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainGraphics, mon->vm, phase,
localFamily, localNode, localService,
remoteFamily, remoteNode, remoteService,
authScheme, x509dname, saslUsername);
return ret;
}
int
qemuMonitorEmitTrayChange(qemuMonitorPtr mon,
const char *devAlias,
int reason)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainTrayChange, mon->vm,
devAlias, reason);
return ret;
}
int
qemuMonitorEmitPMWakeup(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainPMWakeup, mon->vm);
return ret;
}
int
qemuMonitorEmitPMSuspend(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainPMSuspend, mon->vm);
return ret;
}
int
qemuMonitorEmitPMSuspendDisk(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainPMSuspendDisk, mon->vm);
return ret;
}
int
qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
const char *diskAlias,
int type,
int status)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainBlockJob, mon->vm,
diskAlias, type, status);
return ret;
}
int
qemuMonitorEmitBalloonChange(qemuMonitorPtr mon,
unsigned long long actual)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainBalloonChange, mon->vm, actual);
return ret;
}
int
qemuMonitorEmitDeviceDeleted(qemuMonitorPtr mon,
const char *devAlias)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainDeviceDeleted, mon->vm, devAlias);
return ret;
}
int
qemuMonitorEmitNicRxFilterChanged(qemuMonitorPtr mon,
const char *devAlias)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainNicRxFilterChanged, mon->vm, devAlias);
return ret;
}
int
qemuMonitorEmitSerialChange(qemuMonitorPtr mon,
const char *devAlias,
bool connected)
{
int ret = -1;
VIR_DEBUG("mon=%p, devAlias='%s', connected=%d", mon, devAlias, connected);
QEMU_MONITOR_CALLBACK(mon, ret, domainSerialChange, mon->vm, devAlias, connected);
return ret;
}
int
qemuMonitorEmitSpiceMigrated(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainSpiceMigrated, mon->vm);
return ret;
}
int
qemuMonitorEmitMigrationStatus(qemuMonitorPtr mon,
int status)
{
int ret = -1;
VIR_DEBUG("mon=%p, status=%s",
mon, NULLSTR(qemuMonitorMigrationStatusTypeToString(status)));
QEMU_MONITOR_CALLBACK(mon, ret, domainMigrationStatus, mon->vm, status);
return ret;
}
int
qemuMonitorEmitMigrationPass(qemuMonitorPtr mon,
int pass)
{
int ret = -1;
VIR_DEBUG("mon=%p, pass=%d", mon, pass);
QEMU_MONITOR_CALLBACK(mon, ret, domainMigrationPass, mon->vm, pass);
return ret;
}
int
qemuMonitorEmitAcpiOstInfo(qemuMonitorPtr mon,
const char *alias,
const char *slotType,
const char *slot,
unsigned int source,
unsigned int status)
{
int ret = -1;
VIR_DEBUG("mon=%p, alias='%s', slotType='%s', slot='%s', source='%u' status=%u",
mon, NULLSTR(alias), slotType, slot, source, status);
QEMU_MONITOR_CALLBACK(mon, ret, domainAcpiOstInfo, mon->vm,
alias, slotType, slot, source, status);
return ret;
}
int
qemuMonitorSetCapabilities(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (!mon->json)
return 0;
return qemuMonitorJSONSetCapabilities(mon);
}
int
qemuMonitorStartCPUs(qemuMonitorPtr mon,
virConnectPtr conn)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONStartCPUs(mon, conn);
else
return qemuMonitorTextStartCPUs(mon, conn);
}
int
qemuMonitorStopCPUs(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONStopCPUs(mon);
else
return qemuMonitorTextStopCPUs(mon);
}
int
qemuMonitorGetStatus(qemuMonitorPtr mon,
bool *running,
virDomainPausedReason *reason)
{
VIR_DEBUG("running=%p, reason=%p", running, reason);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetStatus(mon, running, reason);
else
return qemuMonitorTextGetStatus(mon, running, reason);
}
int
qemuMonitorSystemPowerdown(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSystemPowerdown(mon);
else
return qemuMonitorTextSystemPowerdown(mon);
}
int
qemuMonitorSystemReset(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSystemReset(mon);
else
return qemuMonitorTextSystemReset(mon);
}
/**
* qemuMonitorGetCPUInfo:
* @mon: monitor
* @pids: returned array of thread ids corresponding to the vCPUs
*
* Detects the vCPU thread ids. Returns count of detected vCPUs on success,
* 0 if qemu didn't report thread ids (does not report libvirt error),
* -1 on error (reports libvirt error).
*/
int
qemuMonitorGetCPUInfo(qemuMonitorPtr mon,
int **pids)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetCPUInfo(mon, pids);
else
return qemuMonitorTextGetCPUInfo(mon, pids);
}
int
qemuMonitorSetLink(qemuMonitorPtr mon,
const char *name,
virDomainNetInterfaceLinkState state)
{
VIR_DEBUG("name=%s, state=%u", name, state);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetLink(mon, name, state);
else
return qemuMonitorTextSetLink(mon, name, state);
}
int
qemuMonitorGetVirtType(qemuMonitorPtr mon,
virDomainVirtType *virtType)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetVirtType(mon, virtType);
else
return qemuMonitorTextGetVirtType(mon, virtType);
}
/**
* Returns: 0 if balloon not supported, +1 if balloon query worked
* or -1 on failure
*/
int
qemuMonitorGetBalloonInfo(qemuMonitorPtr mon,
unsigned long long *currmem)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetBalloonInfo(mon, currmem);
else
return qemuMonitorTextGetBalloonInfo(mon, currmem);
}
int
qemuMonitorGetMemoryStats(qemuMonitorPtr mon,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
VIR_DEBUG("stats=%p nstats=%u", stats, nr_stats);
QEMU_CHECK_MONITOR(mon);
if (mon->json) {
qemuMonitorInitBalloonObjectPath(mon);
return qemuMonitorJSONGetMemoryStats(mon, mon->balloonpath,
stats, nr_stats);
} else {
return qemuMonitorTextGetMemoryStats(mon, stats, nr_stats);
}
}
/**
* qemuMonitorSetMemoryStatsPeriod:
*
* This function sets balloon stats update period.
*
* Returns 0 on success and -1 on error, but does *not* set an error.
*/
int
qemuMonitorSetMemoryStatsPeriod(qemuMonitorPtr mon,
int period)
{
int ret = -1;
VIR_DEBUG("mon=%p period=%d", mon, period);
if (!mon)
return -1;
if (!mon->json)
return -1;
if (period < 0)
return -1;
qemuMonitorInitBalloonObjectPath(mon);
if (mon->balloonpath) {
ret = qemuMonitorJSONSetMemoryStatsPeriod(mon, mon->balloonpath,
period);
/*
* Most of the calls to this function are supposed to be
* non-fatal and the only one that should be fatal wants its
* own error message. More details for debugging will be in
* the log file.
*/
if (ret < 0)
virResetLastError();
}
return ret;
}
int
qemuMonitorBlockIOStatusToError(const char *status)
{
int st = qemuMonitorBlockIOStatusTypeFromString(status);
if (st < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown block IO status: %s"), status);
return -1;
}
switch ((qemuMonitorBlockIOStatus) st) {
case QEMU_MONITOR_BLOCK_IO_STATUS_OK:
return VIR_DOMAIN_DISK_ERROR_NONE;
case QEMU_MONITOR_BLOCK_IO_STATUS_FAILED:
return VIR_DOMAIN_DISK_ERROR_UNSPEC;
case QEMU_MONITOR_BLOCK_IO_STATUS_NOSPACE:
return VIR_DOMAIN_DISK_ERROR_NO_SPACE;
/* unreachable */
case QEMU_MONITOR_BLOCK_IO_STATUS_LAST:
break;
}
return -1;
}
virHashTablePtr
qemuMonitorGetBlockInfo(qemuMonitorPtr mon)
{
int ret;
virHashTablePtr table;
QEMU_CHECK_MONITOR_NULL(mon);
if (!(table = virHashCreate(32, virHashValueFree)))
return NULL;
if (mon->json)
ret = qemuMonitorJSONGetBlockInfo(mon, table);
else
ret = qemuMonitorTextGetBlockInfo(mon, table);
if (ret < 0) {
virHashFree(table);
return NULL;
}
return table;
}
/**
* qemuMonitorGetAllBlockStatsInfo:
* @mon: monitor object
* @ret_stats: pointer that is filled with a hash table containing the stats
* @backingChain: recurse into the backing chain of devices
*
* Creates a hash table in @ret_stats with block stats of all devices. In case
* @backingChain is true @ret_stats will additionally contain stats for
* backing chain members of block devices.
*
* Returns < 0 on error, count of supported block stats fields on success.
*/
int
qemuMonitorGetAllBlockStatsInfo(qemuMonitorPtr mon,
virHashTablePtr *ret_stats,
bool backingChain)
{
int ret = -1;
VIR_DEBUG("ret_stats=%p, backing=%d", ret_stats, backingChain);
QEMU_CHECK_MONITOR(mon);
if (!(*ret_stats = virHashCreate(10, virHashValueFree)))
goto error;
if (mon->json) {
ret = qemuMonitorJSONGetAllBlockStatsInfo(mon, *ret_stats,
backingChain);
} else {
if (backingChain) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("text monitor doesn't support block stats for "
"backing chain members"));
goto error;
}
ret = qemuMonitorTextGetAllBlockStatsInfo(mon, *ret_stats);
}
if (ret < 0)
goto error;
return ret;
error:
virHashFree(*ret_stats);
*ret_stats = NULL;
return -1;
}
/* Updates "stats" to fill virtual and physical size of the image */
int
qemuMonitorBlockStatsUpdateCapacity(qemuMonitorPtr mon,
virHashTablePtr stats,
bool backingChain)
{
VIR_DEBUG("stats=%p, backing=%d", stats, backingChain);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONBlockStatsUpdateCapacity(mon, stats, backingChain);
}
int
qemuMonitorBlockResize(qemuMonitorPtr mon,
const char *device,
unsigned long long size)
{
VIR_DEBUG("device=%s size=%llu", device, size);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONBlockResize(mon, device, size);
else
return qemuMonitorTextBlockResize(mon, device, size);
}
int
qemuMonitorSetVNCPassword(qemuMonitorPtr mon,
const char *password)
{
VIR_DEBUG("password=%p", password);
QEMU_CHECK_MONITOR(mon);
if (!password)
password = "";
if (mon->json)
return qemuMonitorJSONSetVNCPassword(mon, password);
else
return qemuMonitorTextSetVNCPassword(mon, password);
}
static const char *
qemuMonitorTypeToProtocol(int type)
{
switch (type) {
case VIR_DOMAIN_GRAPHICS_TYPE_VNC:
return "vnc";
case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
return "spice";
default:
virReportError(VIR_ERR_INVALID_ARG,
_("unsupported protocol type %s"),
virDomainGraphicsTypeToString(type));
return NULL;
}
}
/* Returns -2 if not supported with this monitor connection */
int
qemuMonitorSetPassword(qemuMonitorPtr mon,
int type,
const char *password,
const char *action_if_connected)
{
const char *protocol = qemuMonitorTypeToProtocol(type);
if (!protocol)
return -1;
VIR_DEBUG("protocol=%s, password=%p, action_if_connected=%s",
protocol, password, action_if_connected);
QEMU_CHECK_MONITOR(mon);
if (!password)
password = "";
if (!action_if_connected)
action_if_connected = "keep";
if (mon->json)
return qemuMonitorJSONSetPassword(mon, protocol, password, action_if_connected);
else
return qemuMonitorTextSetPassword(mon, protocol, password, action_if_connected);
}
int
qemuMonitorExpirePassword(qemuMonitorPtr mon,
int type,
const char *expire_time)
{
const char *protocol = qemuMonitorTypeToProtocol(type);
if (!protocol)
return -1;
VIR_DEBUG("protocol=%s, expire_time=%s", protocol, expire_time);
QEMU_CHECK_MONITOR(mon);
if (!expire_time)
expire_time = "now";
if (mon->json)
return qemuMonitorJSONExpirePassword(mon, protocol, expire_time);
else
return qemuMonitorTextExpirePassword(mon, protocol, expire_time);
}
/*
* Returns: 0 if balloon not supported, +1 if balloon adjust worked
* or -1 on failure
*/
int
qemuMonitorSetBalloon(qemuMonitorPtr mon,
unsigned long long newmem)
{
VIR_DEBUG("newmem=%llu", newmem);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetBalloon(mon, newmem);
else
return qemuMonitorTextSetBalloon(mon, newmem);
}
/*
* Returns: 0 if CPU modification was successful or -1 on failure
*/
int
qemuMonitorSetCPU(qemuMonitorPtr mon, int cpu, bool online)
{
VIR_DEBUG("cpu=%d online=%d", cpu, online);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetCPU(mon, cpu, online);
else
return qemuMonitorTextSetCPU(mon, cpu, online);
}
int
qemuMonitorEjectMedia(qemuMonitorPtr mon,
const char *dev_name,
bool force)
{
VIR_DEBUG("dev_name=%s force=%d", dev_name, force);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONEjectMedia(mon, dev_name, force);
else
return qemuMonitorTextEjectMedia(mon, dev_name, force);
}
int
qemuMonitorChangeMedia(qemuMonitorPtr mon,
const char *dev_name,
const char *newmedia,
const char *format)
{
VIR_DEBUG("dev_name=%s newmedia=%s format=%s", dev_name, newmedia, format);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONChangeMedia(mon, dev_name, newmedia, format);
else
return qemuMonitorTextChangeMedia(mon, dev_name, newmedia, format);
}
int
qemuMonitorSaveVirtualMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
VIR_DEBUG("offset=%llu length=%zu path=%s", offset, length, path);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSaveVirtualMemory(mon, offset, length, path);
else
return qemuMonitorTextSaveVirtualMemory(mon, offset, length, path);
}
int
qemuMonitorSavePhysicalMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
VIR_DEBUG("offset=%llu length=%zu path=%s", offset, length, path);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSavePhysicalMemory(mon, offset, length, path);
else
return qemuMonitorTextSavePhysicalMemory(mon, offset, length, path);
}
int
qemuMonitorSetMigrationSpeed(qemuMonitorPtr mon,
unsigned long bandwidth)
{
VIR_DEBUG("bandwidth=%lu", bandwidth);
QEMU_CHECK_MONITOR(mon);
if (bandwidth > QEMU_DOMAIN_MIG_BANDWIDTH_MAX) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
QEMU_DOMAIN_MIG_BANDWIDTH_MAX + 1ULL);
return -1;
}
if (mon->json)
return qemuMonitorJSONSetMigrationSpeed(mon, bandwidth);
else
return qemuMonitorTextSetMigrationSpeed(mon, bandwidth);
}
int
qemuMonitorSetMigrationDowntime(qemuMonitorPtr mon,
unsigned long long downtime)
{
VIR_DEBUG("downtime=%llu", downtime);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetMigrationDowntime(mon, downtime);
else
return qemuMonitorTextSetMigrationDowntime(mon, downtime);
}
int
qemuMonitorGetMigrationCacheSize(qemuMonitorPtr mon,
unsigned long long *cacheSize)
{
VIR_DEBUG("cacheSize=%p", cacheSize);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetMigrationCacheSize(mon, cacheSize);
}
int
qemuMonitorSetMigrationCacheSize(qemuMonitorPtr mon,
unsigned long long cacheSize)
{
VIR_DEBUG("cacheSize=%llu", cacheSize);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONSetMigrationCacheSize(mon, cacheSize);
}
int
qemuMonitorGetMigrationCompression(qemuMonitorPtr mon,
qemuMonitorMigrationCompressionPtr compress)
{
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetMigrationCompression(mon, compress);
}
int
qemuMonitorSetMigrationCompression(qemuMonitorPtr mon,
qemuMonitorMigrationCompressionPtr compress)
{
VIR_DEBUG("level=%d threads=%d dthreads=%d",
compress->level, compress->threads, compress->dthreads);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONSetMigrationCompression(mon, compress);
}
int
qemuMonitorGetMigrationStats(qemuMonitorPtr mon,
qemuMonitorMigrationStatsPtr stats)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetMigrationStats(mon, stats);
else
return qemuMonitorTextGetMigrationStats(mon, stats);
}
int
qemuMonitorMigrateToFd(qemuMonitorPtr mon,
unsigned int flags,
int fd)
{
int ret;
VIR_DEBUG("fd=%d flags=%x", fd, flags);
QEMU_CHECK_MONITOR(mon);
if (qemuMonitorSendFileHandle(mon, "migrate", fd) < 0)
return -1;
if (mon->json)
ret = qemuMonitorJSONMigrate(mon, flags, "fd:migrate");
else
ret = qemuMonitorTextMigrate(mon, flags, "fd:migrate");
if (ret < 0) {
if (qemuMonitorCloseFileHandle(mon, "migrate") < 0)
VIR_WARN("failed to close migration handle");
}
return ret;
}
int
qemuMonitorMigrateToHost(qemuMonitorPtr mon,
unsigned int flags,
const char *protocol,
const char *hostname,
int port)
{
int ret;
char *uri = NULL;
VIR_DEBUG("hostname=%s port=%d flags=%x", hostname, port, flags);
QEMU_CHECK_MONITOR(mon);
if (virAsprintf(&uri, "%s:%s:%d", protocol, hostname, port) < 0)
return -1;
if (mon->json)
ret = qemuMonitorJSONMigrate(mon, flags, uri);
else
ret = qemuMonitorTextMigrate(mon, flags, uri);
VIR_FREE(uri);
return ret;
}
int
qemuMonitorMigrateToCommand(qemuMonitorPtr mon,
unsigned int flags,
const char * const *argv)
{
char *argstr;
char *dest = NULL;
int ret = -1;
VIR_DEBUG("argv=%p flags=%x", argv, flags);
QEMU_CHECK_MONITOR(mon);
argstr = virArgvToString(argv);
if (!argstr)
goto cleanup;
if (virAsprintf(&dest, "exec:%s", argstr) < 0)
goto cleanup;
if (mon->json)
ret = qemuMonitorJSONMigrate(mon, flags, dest);
else
ret = qemuMonitorTextMigrate(mon, flags, dest);
cleanup:
VIR_FREE(argstr);
VIR_FREE(dest);
return ret;
}
int
qemuMonitorMigrateToUnix(qemuMonitorPtr mon,
unsigned int flags,
const char *unixfile)
{
char *dest = NULL;
int ret = -1;
VIR_DEBUG("unixfile=%s flags=%x", unixfile, flags);
QEMU_CHECK_MONITOR(mon);
if (virAsprintf(&dest, "unix:%s", unixfile) < 0)
return -1;
if (mon->json)
ret = qemuMonitorJSONMigrate(mon, flags, dest);
else
ret = qemuMonitorTextMigrate(mon, flags, dest);
VIR_FREE(dest);
return ret;
}
int
qemuMonitorMigrateCancel(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONMigrateCancel(mon);
else
return qemuMonitorTextMigrateCancel(mon);
}
/**
* Returns 1 if @capability is supported, 0 if it's not, or -1 on error.
*/
int
qemuMonitorGetDumpGuestMemoryCapability(qemuMonitorPtr mon,
const char *capability)
{
VIR_DEBUG("capability=%s", capability);
QEMU_CHECK_MONITOR(mon);
/* No capability is supported without JSON monitor */
if (!mon->json)
return 0;
return qemuMonitorJSONGetDumpGuestMemoryCapability(mon, capability);
}
int
qemuMonitorDumpToFd(qemuMonitorPtr mon, int fd, const char *dumpformat)
{
int ret;
VIR_DEBUG("fd=%d dumpformat=%s", fd, dumpformat);
QEMU_CHECK_MONITOR_JSON(mon);
if (qemuMonitorSendFileHandle(mon, "dump", fd) < 0)
return -1;
ret = qemuMonitorJSONDump(mon, "fd:dump", dumpformat);
if (ret < 0) {
if (qemuMonitorCloseFileHandle(mon, "dump") < 0)
VIR_WARN("failed to close dumping handle");
}
return ret;
}
int
qemuMonitorGraphicsRelocate(qemuMonitorPtr mon,
int type,
const char *hostname,
int port,
int tlsPort,
const char *tlsSubject)
{
VIR_DEBUG("type=%d hostname=%s port=%d tlsPort=%d tlsSubject=%s",
type, hostname, port, tlsPort, NULLSTR(tlsSubject));
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGraphicsRelocate(mon,
type,
hostname,
port,
tlsPort,
tlsSubject);
else
return qemuMonitorTextGraphicsRelocate(mon,
type,
hostname,
port,
tlsPort,
tlsSubject);
}
int
qemuMonitorSendFileHandle(qemuMonitorPtr mon,
const char *fdname,
int fd)
{
VIR_DEBUG("fdname=%s fd=%d", fdname, fd);
QEMU_CHECK_MONITOR(mon);
if (fd < 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("fd must be valid"));
return -1;
}
if (!mon->hasSendFD) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("qemu is not using a unix socket monitor, "
"cannot send fd %s"), fdname);
return -1;
}
if (mon->json)
return qemuMonitorJSONSendFileHandle(mon, fdname, fd);
else
return qemuMonitorTextSendFileHandle(mon, fdname, fd);
}
int
qemuMonitorCloseFileHandle(qemuMonitorPtr mon,
const char *fdname)
{
int ret = -1;
virErrorPtr error;
VIR_DEBUG("fdname=%s", fdname);
error = virSaveLastError();
QEMU_CHECK_MONITOR_GOTO(mon, cleanup);
if (mon->json)
ret = qemuMonitorJSONCloseFileHandle(mon, fdname);
else
ret = qemuMonitorTextCloseFileHandle(mon, fdname);
cleanup:
if (error) {
virSetError(error);
virFreeError(error);
}
return ret;
}
/* Add the open file descriptor FD into the non-negative set FDSET.
* If NAME is present, it will be passed along for logging purposes.
* Returns the counterpart fd that qemu received, or -1 on error. */
int
qemuMonitorAddFd(qemuMonitorPtr mon, int fdset, int fd, const char *name)
{
VIR_DEBUG("fdset=%d, fd=%d, name=%s", fdset, fd, NULLSTR(name));
QEMU_CHECK_MONITOR_JSON(mon);
if (fd < 0 || fdset < 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("fd and fdset must be valid"));
return -1;
}
if (!mon->hasSendFD) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("qemu is not using a unix socket monitor, "
"cannot send fd %s"), NULLSTR(name));
return -1;
}
return qemuMonitorJSONAddFd(mon, fdset, fd, name);
}
/* Remove one of qemu's fds from the given FDSET, or if FD is
* negative, remove the entire set. Preserve any previous error on
* entry. Returns 0 on success, -1 on error. */
int
qemuMonitorRemoveFd(qemuMonitorPtr mon, int fdset, int fd)
{
int ret = -1;
virErrorPtr error;
VIR_DEBUG("fdset=%d, fd=%d", fdset, fd);
error = virSaveLastError();
QEMU_CHECK_MONITOR_JSON_GOTO(mon, cleanup);
ret = qemuMonitorJSONRemoveFd(mon, fdset, fd);
cleanup:
if (error) {
virSetError(error);
virFreeError(error);
}
return ret;
}
int
qemuMonitorAddHostNetwork(qemuMonitorPtr mon,
const char *netstr,
int *tapfd, char **tapfdName, int tapfdSize,
int *vhostfd, char **vhostfdName, int vhostfdSize)
{
int ret = -1;
size_t i = 0, j = 0;
VIR_DEBUG("netstr=%s tapfd=%p tapfdName=%p tapfdSize=%d "
"vhostfd=%p vhostfdName=%p vhostfdSize=%d",
netstr, tapfd, tapfdName, tapfdSize,
vhostfd, vhostfdName, vhostfdSize);
QEMU_CHECK_MONITOR(mon);
for (i = 0; i < tapfdSize; i++) {
if (qemuMonitorSendFileHandle(mon, tapfdName[i], tapfd[i]) < 0)
goto cleanup;
}
for (j = 0; j < vhostfdSize; j++) {
if (qemuMonitorSendFileHandle(mon, vhostfdName[j], vhostfd[j]) < 0)
goto cleanup;
}
if (mon->json)
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor should be using AddNetdev"));
else
ret = qemuMonitorTextAddHostNetwork(mon, netstr);
cleanup:
if (ret < 0) {
while (i--) {
if (qemuMonitorCloseFileHandle(mon, tapfdName[i]) < 0)
VIR_WARN("failed to close device handle '%s'", tapfdName[i]);
}
while (j--) {
if (qemuMonitorCloseFileHandle(mon, vhostfdName[j]) < 0)
VIR_WARN("failed to close device handle '%s'", vhostfdName[j]);
}
}
return ret;
}
int
qemuMonitorRemoveHostNetwork(qemuMonitorPtr mon,
int vlan,
const char *netname)
{
VIR_DEBUG("netname=%s", netname);
QEMU_CHECK_MONITOR(mon);
if (mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor should be using RemoveNetdev"));
return -1;
}
return qemuMonitorTextRemoveHostNetwork(mon, vlan, netname);
}
int
qemuMonitorAddNetdev(qemuMonitorPtr mon,
const char *netdevstr,
int *tapfd, char **tapfdName, int tapfdSize,
int *vhostfd, char **vhostfdName, int vhostfdSize)
{
int ret = -1;
size_t i = 0, j = 0;
VIR_DEBUG("netdevstr=%s tapfd=%p tapfdName=%p tapfdSize=%d"
"vhostfd=%p vhostfdName=%p vhostfdSize=%d",
netdevstr, tapfd, tapfdName, tapfdSize,
vhostfd, vhostfdName, vhostfdSize);
QEMU_CHECK_MONITOR(mon);
for (i = 0; i < tapfdSize; i++) {
if (qemuMonitorSendFileHandle(mon, tapfdName[i], tapfd[i]) < 0)
goto cleanup;
}
for (j = 0; j < vhostfdSize; j++) {
if (qemuMonitorSendFileHandle(mon, vhostfdName[j], vhostfd[j]) < 0)
goto cleanup;
}
if (mon->json)
ret = qemuMonitorJSONAddNetdev(mon, netdevstr);
else
ret = qemuMonitorTextAddNetdev(mon, netdevstr);
cleanup:
if (ret < 0) {
while (i--) {
if (qemuMonitorCloseFileHandle(mon, tapfdName[i]) < 0)
VIR_WARN("failed to close device handle '%s'", tapfdName[i]);
}
while (j--) {
if (qemuMonitorCloseFileHandle(mon, vhostfdName[j]) < 0)
VIR_WARN("failed to close device handle '%s'", vhostfdName[j]);
}
}
return ret;
}
int
qemuMonitorRemoveNetdev(qemuMonitorPtr mon,
const char *alias)
{
VIR_DEBUG("alias=%s", alias);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONRemoveNetdev(mon, alias);
else
return qemuMonitorTextRemoveNetdev(mon, alias);
}
int
qemuMonitorQueryRxFilter(qemuMonitorPtr mon, const char *alias,
virNetDevRxFilterPtr *filter)
{
VIR_DEBUG("alias=%s filter=%p", alias, filter);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONQueryRxFilter(mon, alias, filter);
}
void
qemuMonitorChardevInfoFree(void *data,
const void *name ATTRIBUTE_UNUSED)
{
qemuMonitorChardevInfoPtr info = data;
VIR_FREE(info->ptyPath);
VIR_FREE(info);
}
int
qemuMonitorGetChardevInfo(qemuMonitorPtr mon,
virHashTablePtr *retinfo)
{
int ret;
virHashTablePtr info = NULL;
VIR_DEBUG("retinfo=%p", retinfo);
QEMU_CHECK_MONITOR_GOTO(mon, error);
if (!(info = virHashCreate(10, qemuMonitorChardevInfoFree)))
goto error;
if (mon->json)
ret = qemuMonitorJSONGetChardevInfo(mon, info);
else
ret = qemuMonitorTextGetChardevInfo(mon, info);
if (ret < 0)
goto error;
*retinfo = info;
return 0;
error:
virHashFree(info);
*retinfo = NULL;
return -1;
}
/**
* qemuMonitorDriveDel:
* @mon: monitor object
* @drivestr: identifier of drive to delete.
*
* Attempts to remove a host drive.
* Returns 1 if unsupported, 0 if ok, and -1 on other failure */
int
qemuMonitorDriveDel(qemuMonitorPtr mon,
const char *drivestr)
{
VIR_DEBUG("drivestr=%s", drivestr);
QEMU_CHECK_MONITOR(mon);
/* there won't be a direct replacement for drive_del in QMP */
return qemuMonitorTextDriveDel(mon, drivestr);
}
int
qemuMonitorDelDevice(qemuMonitorPtr mon,
const char *devalias)
{
VIR_DEBUG("devalias=%s", devalias);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONDelDevice(mon, devalias);
else
return qemuMonitorTextDelDevice(mon, devalias);
}
int
qemuMonitorAddDeviceWithFd(qemuMonitorPtr mon,
const char *devicestr,
int fd,
const char *fdname)
{
VIR_DEBUG("device=%s fd=%d fdname=%s", devicestr, fd, NULLSTR(fdname));
int ret;
QEMU_CHECK_MONITOR(mon);
if (fd >= 0 && qemuMonitorSendFileHandle(mon, fdname, fd) < 0)
return -1;
if (mon->json)
ret = qemuMonitorJSONAddDevice(mon, devicestr);
else
ret = qemuMonitorTextAddDevice(mon, devicestr);
if (ret < 0 && fd >= 0) {
if (qemuMonitorCloseFileHandle(mon, fdname) < 0)
VIR_WARN("failed to close device handle '%s'", fdname);
}
return ret;
}
int
qemuMonitorAddDevice(qemuMonitorPtr mon,
const char *devicestr)
{
return qemuMonitorAddDeviceWithFd(mon, devicestr, -1, NULL);
}
/**
* qemuMonitorAddObject:
* @mon: Pointer to monitor object
* @type: Type name of object to add
* @objalias: Alias of the new object
* @props: Optional arguments for the given type. The object is consumed and
* should not be referenced by the caller after this function returns.
*
* Returns 0 on success -1 on error.
*/
int
qemuMonitorAddObject(qemuMonitorPtr mon,
const char *type,
const char *objalias,
virJSONValuePtr props)
{
VIR_DEBUG("type=%s objalias=%s props=%p", type, objalias, props);
QEMU_CHECK_MONITOR_JSON_GOTO(mon, error);
return qemuMonitorJSONAddObject(mon, type, objalias, props);
error:
virJSONValueFree(props);
return -1;
}
int
qemuMonitorDelObject(qemuMonitorPtr mon,
const char *objalias)
{
VIR_DEBUG("objalias=%s", objalias);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONDelObject(mon, objalias);
}
int
qemuMonitorAddDrive(qemuMonitorPtr mon,
const char *drivestr)
{
VIR_DEBUG("drive=%s", drivestr);
QEMU_CHECK_MONITOR(mon);
/* there won't ever be a direct QMP replacement for this function */
return qemuMonitorTextAddDrive(mon, drivestr);
}
int
qemuMonitorSetDrivePassphrase(qemuMonitorPtr mon,
const char *alias,
const char *passphrase)
{
VIR_DEBUG("alias=%s passphrase=%p(value hidden)", alias, passphrase);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetDrivePassphrase(mon, alias, passphrase);
else
return qemuMonitorTextSetDrivePassphrase(mon, alias, passphrase);
}
int
qemuMonitorCreateSnapshot(qemuMonitorPtr mon, const char *name)
{
VIR_DEBUG("name=%s", name);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONCreateSnapshot(mon, name);
else
return qemuMonitorTextCreateSnapshot(mon, name);
}
int
qemuMonitorLoadSnapshot(qemuMonitorPtr mon, const char *name)
{
VIR_DEBUG("name=%s", name);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONLoadSnapshot(mon, name);
else
return qemuMonitorTextLoadSnapshot(mon, name);
}
int
qemuMonitorDeleteSnapshot(qemuMonitorPtr mon, const char *name)
{
VIR_DEBUG("name=%s", name);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONDeleteSnapshot(mon, name);
else
return qemuMonitorTextDeleteSnapshot(mon, name);
}
/* Use the snapshot_blkdev command to convert the existing file for
* device into a read-only backing file of a new qcow2 image located
* at file. */
int
qemuMonitorDiskSnapshot(qemuMonitorPtr mon, virJSONValuePtr actions,
const char *device, const char *file,
const char *format, bool reuse)
{
VIR_DEBUG("actions=%p, device=%s, file=%s, format=%s, reuse=%d",
actions, device, file, format, reuse);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONDiskSnapshot(mon, actions, device, file, format, reuse);
}
/* Start a drive-mirror block job. bandwidth is in bytes/sec. */
int
qemuMonitorDriveMirror(qemuMonitorPtr mon,
const char *device, const char *file,
const char *format, unsigned long long bandwidth,
unsigned int granularity, unsigned long long buf_size,
unsigned int flags)
{
VIR_DEBUG("device=%s, file=%s, format=%s, bandwidth=%lld, "
"granularity=%#x, buf_size=%lld, flags=%x",
device, file, NULLSTR(format), bandwidth, granularity,
buf_size, flags);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONDriveMirror(mon, device, file, format, bandwidth,
granularity, buf_size, flags);
}
/* Use the transaction QMP command to run atomic snapshot commands. */
int
qemuMonitorTransaction(qemuMonitorPtr mon, virJSONValuePtr actions)
{
VIR_DEBUG("actions=%p", actions);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONTransaction(mon, actions);
}
/* Start a block-commit block job. bandwidth is in bytes/sec. */
int
qemuMonitorBlockCommit(qemuMonitorPtr mon, const char *device,
const char *top, const char *base,
const char *backingName,
unsigned long long bandwidth)
{
VIR_DEBUG("device=%s, top=%s, base=%s, backingName=%s, bandwidth=%llu",
device, top, base, NULLSTR(backingName), bandwidth);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONBlockCommit(mon, device, top, base,
backingName, bandwidth);
}
/* Probe whether active commits are supported by a given qemu binary. */
bool
qemuMonitorSupportsActiveCommit(qemuMonitorPtr mon)
{
if (!mon || !mon->json)
return false;
return qemuMonitorJSONBlockCommit(mon, "bogus", NULL, NULL, NULL, 0) == -2;
}
/* Determine the name that qemu is using for tracking the backing
* element TARGET within the chain starting at TOP. */
char *
qemuMonitorDiskNameLookup(qemuMonitorPtr mon,
const char *device,
virStorageSourcePtr top,
virStorageSourcePtr target)
{
QEMU_CHECK_MONITOR_JSON_NULL(mon);
return qemuMonitorJSONDiskNameLookup(mon, device, top, target);
}
/* Use the block-job-complete monitor command to pivot a block copy job. */
int
qemuMonitorDrivePivot(qemuMonitorPtr mon,
const char *device)
{
VIR_DEBUG("device=%s", device);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONDrivePivot(mon, device);
}
int
qemuMonitorArbitraryCommand(qemuMonitorPtr mon,
const char *cmd,
char **reply,
bool hmp)
{
VIR_DEBUG("cmd=%s, reply=%p, hmp=%d", cmd, reply, hmp);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONArbitraryCommand(mon, cmd, reply, hmp);
else
return qemuMonitorTextArbitraryCommand(mon, cmd, reply);
}
int
qemuMonitorInjectNMI(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONInjectNMI(mon);
else
return qemuMonitorTextInjectNMI(mon);
}
int
qemuMonitorSendKey(qemuMonitorPtr mon,
unsigned int holdtime,
unsigned int *keycodes,
unsigned int nkeycodes)
{
VIR_DEBUG("holdtime=%u, nkeycodes=%u", holdtime, nkeycodes);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSendKey(mon, holdtime, keycodes, nkeycodes);
else
return qemuMonitorTextSendKey(mon, holdtime, keycodes, nkeycodes);
}
int
qemuMonitorScreendump(qemuMonitorPtr mon,
const char *file)
{
VIR_DEBUG("file=%s", file);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONScreendump(mon, file);
else
return qemuMonitorTextScreendump(mon, file);
}
/* bandwidth is in bytes/sec */
int
qemuMonitorBlockStream(qemuMonitorPtr mon,
const char *device,
const char *base,
const char *backingName,
unsigned long long bandwidth,
bool modern)
{
VIR_DEBUG("device=%s, base=%s, backingName=%s, bandwidth=%lluB, modern=%d",
device, NULLSTR(base), NULLSTR(backingName), bandwidth, modern);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONBlockStream(mon, device, base, backingName,
bandwidth, modern);
}
int
qemuMonitorBlockJobCancel(qemuMonitorPtr mon,
const char *device,
bool modern)
{
VIR_DEBUG("device=%s, modern=%d", device, modern);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONBlockJobCancel(mon, device, modern);
}
int
qemuMonitorBlockJobSetSpeed(qemuMonitorPtr mon,
const char *device,
unsigned long long bandwidth,
bool modern)
{
VIR_DEBUG("device=%s, bandwidth=%lluB, modern=%d", device, bandwidth, modern);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONBlockJobSetSpeed(mon, device, bandwidth, modern);
}
virHashTablePtr
qemuMonitorGetAllBlockJobInfo(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR_JSON_NULL(mon);
return qemuMonitorJSONGetAllBlockJobInfo(mon);
}
/**
* qemuMonitorGetBlockJobInfo:
* Parse Block Job information, and populate info for the named device.
* Return 1 if info available, 0 if device has no block job, and -1 on error.
*/
int
qemuMonitorGetBlockJobInfo(qemuMonitorPtr mon,
const char *alias,
qemuMonitorBlockJobInfoPtr info)
{
virHashTablePtr all;
qemuMonitorBlockJobInfoPtr data;
int ret = 0;
VIR_DEBUG("alias=%s, info=%p", alias, info);
if (!(all = qemuMonitorGetAllBlockJobInfo(mon)))
return -1;
if ((data = virHashLookup(all, alias))) {
*info = *data;
ret = 1;
}
virHashFree(all);
return ret;
}
int
qemuMonitorSetBlockIoThrottle(qemuMonitorPtr mon,
const char *device,
virDomainBlockIoTuneInfoPtr info,
bool supportMaxOptions)
{
VIR_DEBUG("device=%p, info=%p", device, info);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONSetBlockIoThrottle(mon, device, info, supportMaxOptions);
else
return qemuMonitorTextSetBlockIoThrottle(mon, device, info);
}
int
qemuMonitorGetBlockIoThrottle(qemuMonitorPtr mon,
const char *device,
virDomainBlockIoTuneInfoPtr reply)
{
VIR_DEBUG("device=%p, reply=%p", device, reply);
QEMU_CHECK_MONITOR(mon);
if (mon->json)
return qemuMonitorJSONGetBlockIoThrottle(mon, device, reply);
else
return qemuMonitorTextGetBlockIoThrottle(mon, device, reply);
}
int
qemuMonitorVMStatusToPausedReason(const char *status)
{
int st;
if (!status)
return VIR_DOMAIN_PAUSED_UNKNOWN;
if ((st = qemuMonitorVMStatusTypeFromString(status)) < 0) {
VIR_WARN("Qemu reported unknown VM status: '%s'", status);
return VIR_DOMAIN_PAUSED_UNKNOWN;
}
switch ((qemuMonitorVMStatus) st) {
case QEMU_MONITOR_VM_STATUS_DEBUG:
case QEMU_MONITOR_VM_STATUS_INTERNAL_ERROR:
case QEMU_MONITOR_VM_STATUS_RESTORE_VM:
return VIR_DOMAIN_PAUSED_UNKNOWN;
case QEMU_MONITOR_VM_STATUS_INMIGRATE:
case QEMU_MONITOR_VM_STATUS_POSTMIGRATE:
case QEMU_MONITOR_VM_STATUS_FINISH_MIGRATE:
return VIR_DOMAIN_PAUSED_MIGRATION;
case QEMU_MONITOR_VM_STATUS_IO_ERROR:
return VIR_DOMAIN_PAUSED_IOERROR;
case QEMU_MONITOR_VM_STATUS_PAUSED:
case QEMU_MONITOR_VM_STATUS_PRELAUNCH:
return VIR_DOMAIN_PAUSED_USER;
case QEMU_MONITOR_VM_STATUS_RUNNING:
VIR_WARN("Qemu reports the guest is paused but status is 'running'");
return VIR_DOMAIN_PAUSED_UNKNOWN;
case QEMU_MONITOR_VM_STATUS_SAVE_VM:
return VIR_DOMAIN_PAUSED_SAVE;
case QEMU_MONITOR_VM_STATUS_SHUTDOWN:
return VIR_DOMAIN_PAUSED_SHUTTING_DOWN;
case QEMU_MONITOR_VM_STATUS_WATCHDOG:
return VIR_DOMAIN_PAUSED_WATCHDOG;
case QEMU_MONITOR_VM_STATUS_GUEST_PANICKED:
return VIR_DOMAIN_PAUSED_CRASHED;
/* unreachable from this point on */
case QEMU_MONITOR_VM_STATUS_LAST:
;
}
return VIR_DOMAIN_PAUSED_UNKNOWN;
}
int
qemuMonitorOpenGraphics(qemuMonitorPtr mon,
const char *protocol,
int fd,
const char *fdname,
bool skipauth)
{
VIR_DEBUG("protocol=%s fd=%d fdname=%s skipauth=%d",
protocol, fd, NULLSTR(fdname), skipauth);
int ret;
QEMU_CHECK_MONITOR(mon);
if (qemuMonitorSendFileHandle(mon, fdname, fd) < 0)
return -1;
if (mon->json)
ret = qemuMonitorJSONOpenGraphics(mon, protocol, fdname, skipauth);
else
ret = qemuMonitorTextOpenGraphics(mon, protocol, fdname, skipauth);
if (ret < 0) {
if (qemuMonitorCloseFileHandle(mon, fdname) < 0)
VIR_WARN("failed to close device handle '%s'", fdname);
}
return ret;
}
int
qemuMonitorSystemWakeup(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONSystemWakeup(mon);
}
int
qemuMonitorGetVersion(qemuMonitorPtr mon,
int *major,
int *minor,
int *micro,
char **package)
{
VIR_DEBUG("major=%p minor=%p micro=%p package=%p",
major, minor, micro, package);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetVersion(mon, major, minor, micro, package);
}
int
qemuMonitorGetMachines(qemuMonitorPtr mon,
qemuMonitorMachineInfoPtr **machines)
{
VIR_DEBUG("machines=%p", machines);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetMachines(mon, machines);
}
void
qemuMonitorMachineInfoFree(qemuMonitorMachineInfoPtr machine)
{
if (!machine)
return;
VIR_FREE(machine->name);
VIR_FREE(machine->alias);
VIR_FREE(machine);
}
int
qemuMonitorGetCPUDefinitions(qemuMonitorPtr mon,
char ***cpus)
{
VIR_DEBUG("cpus=%p", cpus);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetCPUDefinitions(mon, cpus);
}
int
qemuMonitorGetCommands(qemuMonitorPtr mon,
char ***commands)
{
VIR_DEBUG("commands=%p", commands);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetCommands(mon, commands);
}
int
qemuMonitorGetEvents(qemuMonitorPtr mon,
char ***events)
{
VIR_DEBUG("events=%p", events);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetEvents(mon, events);
}
/* Collect the parameters associated with a given command line option.
* Return count of known parameters or -1 on error. */
int
qemuMonitorGetCommandLineOptionParameters(qemuMonitorPtr mon,
const char *option,
char ***params,
bool *found)
{
VIR_DEBUG("option=%s params=%p", option, params);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetCommandLineOptionParameters(mon, option,
params, found);
}
int
qemuMonitorGetKVMState(qemuMonitorPtr mon,
bool *enabled,
bool *present)
{
VIR_DEBUG("enabled=%p present=%p", enabled, present);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetKVMState(mon, enabled, present);
}
int
qemuMonitorGetObjectTypes(qemuMonitorPtr mon,
char ***types)
{
VIR_DEBUG("types=%p", types);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetObjectTypes(mon, types);
}
int
qemuMonitorGetObjectProps(qemuMonitorPtr mon,
const char *type,
char ***props)
{
VIR_DEBUG("type=%s props=%p", type, props);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetObjectProps(mon, type, props);
}
char *
qemuMonitorGetTargetArch(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR_JSON_NULL(mon);
return qemuMonitorJSONGetTargetArch(mon);
}
int
qemuMonitorGetMigrationCapabilities(qemuMonitorPtr mon,
char ***capabilities)
{
QEMU_CHECK_MONITOR(mon);
/* No capability is supported without JSON monitor */
if (!mon->json)
return 0;
return qemuMonitorJSONGetMigrationCapabilities(mon, capabilities);
}
/**
* Returns 1 if @capability is supported, 0 if it's not, or -1 on error.
*/
int
qemuMonitorGetMigrationCapability(qemuMonitorPtr mon,
qemuMonitorMigrationCaps capability)
{
VIR_DEBUG("capability=%d", capability);
QEMU_CHECK_MONITOR(mon);
/* No capability is supported without JSON monitor */
if (!mon->json)
return 0;
return qemuMonitorJSONGetMigrationCapability(mon, capability);
}
int
qemuMonitorSetMigrationCapability(qemuMonitorPtr mon,
qemuMonitorMigrationCaps capability,
bool state)
{
VIR_DEBUG("capability=%d", capability);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONSetMigrationCapability(mon, capability, state);
}
/**
* qemuMonitorGetGICCapabilities:
* @mon: QEMU monitor
* @capabilities: where to store the GIC capabilities
*
* See qemuMonitorJSONGetGICCapabilities().
*/
int
qemuMonitorGetGICCapabilities(qemuMonitorPtr mon,
virGICCapability **capabilities)
{
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetGICCapabilities(mon, capabilities);
}
int
qemuMonitorNBDServerStart(qemuMonitorPtr mon,
const char *host,
unsigned int port)
{
VIR_DEBUG("host=%s port=%u", host, port);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONNBDServerStart(mon, host, port);
}
int
qemuMonitorNBDServerAdd(qemuMonitorPtr mon,
const char *deviceID,
bool writable)
{
VIR_DEBUG("deviceID=%s", deviceID);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONNBDServerAdd(mon, deviceID, writable);
}
int
qemuMonitorNBDServerStop(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONNBDServerStop(mon);
}
int
qemuMonitorGetTPMModels(qemuMonitorPtr mon,
char ***tpmmodels)
{
VIR_DEBUG("tpmmodels=%p", tpmmodels);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetTPMModels(mon, tpmmodels);
}
int
qemuMonitorGetTPMTypes(qemuMonitorPtr mon,
char ***tpmtypes)
{
VIR_DEBUG("tpmtypes=%p", tpmtypes);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetTPMTypes(mon, tpmtypes);
}
int
qemuMonitorAttachCharDev(qemuMonitorPtr mon,
const char *chrID,
virDomainChrSourceDefPtr chr)
{
VIR_DEBUG("chrID=%s chr=%p", chrID, chr);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONAttachCharDev(mon, chrID, chr);
}
int
qemuMonitorDetachCharDev(qemuMonitorPtr mon,
const char *chrID)
{
VIR_DEBUG("chrID=%s", chrID);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONDetachCharDev(mon, chrID);
}
int
qemuMonitorGetDeviceAliases(qemuMonitorPtr mon,
char ***aliases)
{
VIR_DEBUG("aliases=%p", aliases);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetDeviceAliases(mon, aliases);
}
/**
* qemuMonitorSetDomainLog:
* Set the file descriptor of the open VM log file to report potential
* early startup errors of qemu.
*
* @mon: Monitor object to set the log file reading on
* @func: the callback to report errors
* @opaque: data to pass to @func
* @destroy: optional callback to free @opaque
*/
void
qemuMonitorSetDomainLog(qemuMonitorPtr mon,
qemuMonitorReportDomainLogError func,
void *opaque,
virFreeCallback destroy)
{
if (mon->logDestroy && mon->logOpaque)
mon->logDestroy(mon->logOpaque);
mon->logFunc = func;
mon->logOpaque = opaque;
mon->logDestroy = destroy;
}
/**
* qemuMonitorJSONGetGuestCPU:
* @mon: Pointer to the monitor
* @arch: arch of the guest
* @data: returns the cpu data
*
* Retrieve the definition of the guest CPU from a running qemu instance.
*
* Returns 0 on success, -2 if the operation is not supported by the guest,
* -1 on other errors.
*/
int
qemuMonitorGetGuestCPU(qemuMonitorPtr mon,
virArch arch,
virCPUDataPtr *data)
{
VIR_DEBUG("arch='%s' data='%p'", virArchToString(arch), data);
QEMU_CHECK_MONITOR_JSON(mon);
*data = NULL;
return qemuMonitorJSONGetGuestCPU(mon, arch, data);
}
/**
* qemuMonitorRTCResetReinjection:
* @mon: Pointer to the monitor
*
* Issue rtc-reset-reinjection command.
* This should be used in cases where guest time is restored via
* guest agent, so RTC injection is not needed (in fact it would
* confuse guest's RTC).
*
* Returns 0 on success
* -1 on error.
*/
int
qemuMonitorRTCResetReinjection(qemuMonitorPtr mon)
{
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONRTCResetReinjection(mon);
}
/**
* qemuMonitorGetIOThreads:
* @mon: Pointer to the monitor
* @iothreads: Location to return array of IOThreadInfo data
*
* Issue query-iothreads command.
* Retrieve the list of iothreads defined/running for the machine
*
* Returns count of IOThreadInfo structures on success
* -1 on error.
*/
int
qemuMonitorGetIOThreads(qemuMonitorPtr mon,
qemuMonitorIOThreadInfoPtr **iothreads)
{
VIR_DEBUG("iothreads=%p", iothreads);
QEMU_CHECK_MONITOR(mon);
/* Requires JSON to make the query */
if (!mon->json) {
*iothreads = NULL;
return 0;
}
return qemuMonitorJSONGetIOThreads(mon, iothreads);
}
/**
* qemuMonitorGetMemoryDeviceInfo:
* @mon: pointer to the monitor
* @info: Location to return the hash of qemuMonitorMemoryDeviceInfo
*
* Retrieve state and addresses of frontend memory devices present in
* the guest.
*
* Returns 0 on success and fills @info with a newly allocated struct; if the
* data can't be retrieved due to lack of support in qemu, returns -2. On
* other errors returns -1.
*/
int
qemuMonitorGetMemoryDeviceInfo(qemuMonitorPtr mon,
virHashTablePtr *info)
{
VIR_DEBUG("info=%p", info);
int ret;
*info = NULL;
QEMU_CHECK_MONITOR(mon);
if (!mon->json)
return -2;
if (!(*info = virHashCreate(10, virHashValueFree)))
return -1;
if ((ret = qemuMonitorJSONGetMemoryDeviceInfo(mon, *info)) < 0) {
virHashFree(*info);
*info = NULL;
}
return ret;
}
int
qemuMonitorMigrateIncoming(qemuMonitorPtr mon,
const char *uri)
{
VIR_DEBUG("uri=%s", uri);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONMigrateIncoming(mon, uri);
}
int
qemuMonitorMigrateStartPostCopy(qemuMonitorPtr mon)
{
VIR_DEBUG("mon=%p", mon);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONMigrateStartPostCopy(mon);
}
int
qemuMonitorGetRTCTime(qemuMonitorPtr mon,
struct tm *tm)
{
VIR_DEBUG("mon=%p", mon);
QEMU_CHECK_MONITOR_JSON(mon);
return qemuMonitorJSONGetRTCTime(mon, tm);
}
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