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libvirt/src/qemu/qemu_monitor.c
Eric Blake 6abd5ea124 qemu: minor monitor lock cleanups 
If virCondInit fails (okay, so that's unlikely), then we end up
attempting a virObjectUnlock() on the cleanup path, even though
we don't hold a lock.  This is not guaranteed to be safe.  While
at it, I noticed a couple places where we were referencing mon->fd
outside locks.

* src/qemu/qemu_monitor.c (qemuMonitorOpenInternal): Minimize lock
duration.  mon->watch doesn't need clean up on error.
(qemuMonitorGetBlockExtent, qemuMonitorBlockResize): Don't
dereference fd outside of lock.
2013-02-25 17:36:51 -07:00

3525 lines
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/*
* qemu_monitor.c: interaction with QEMU monitor console
*
* Copyright (C) 2006-2013 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/un.h>
#include <unistd.h>
#include <fcntl.h>
#include "qemu_monitor.h"
#include "qemu_monitor_text.h"
#include "qemu_monitor_json.h"
#include "virerror.h"
#include "viralloc.h"
#include "virlog.h"
#include "virfile.h"
#include "virprocess.h"
#include "virobject.h"
#ifdef WITH_DTRACE_PROBES
# include "libvirt_qemu_probes.h"
#endif
#define VIR_FROM_THIS VIR_FROM_QEMU
#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;
/* 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;
unsigned json: 1;
unsigned wait_greeting: 1;
};
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", "active", "completed", "failed", "cancelled")
VIR_ENUM_IMPL(qemuMonitorMigrationCaps,
QEMU_MONITOR_MIGRATION_CAPS_LAST,
"xbzrle")
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")
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;
int 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)
{
int 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)
{
int 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'))
virBufferAsprintf(&buf,"%c", 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);
virCondDestroy(&mon->notify);
VIR_FREE(mon->buffer);
}
static int
qemuMonitorOpenUnix(const char *monitor, pid_t cpid)
{
struct sockaddr_un addr;
int monfd;
int timeout = 3; /* In seconds */
int ret, i = 0;
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;
}
do {
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;
} while ((++i <= timeout*5) && (usleep(.2 * 1000000) <= 0));
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->wait_greeting)
mon->wait_greeting = 0;
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;
/* 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;
}
if (mon->msg->txFD == -1)
done = write(mon->fd,
mon->msg->txBuffer + mon->msg->txOffset,
mon->msg->txLength - mon->msg->txOffset);
else
done = qemuMonitorIOWriteWithFD(mon,
mon->msg->txBuffer + mon->msg->txOffset,
mon->msg->txLength - mon->msg->txOffset,
mon->msg->txFD);
PROBE(QEMU_MONITOR_IO_WRITE,
"mon=%p buf=%s len=%d ret=%d errno=%d",
mon,
mon->msg->txBuffer + mon->msg->txOffset,
mon->msg->txLength - mon->msg->txOffset,
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) {
virReportOOMError();
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->wait_greeting)
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;
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;
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;
} 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 (!error &&
events & VIR_EVENT_HANDLE_HANGUP) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("End of file from monitor"));
eof = 1;
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 = 1;
events &= ~VIR_EVENT_HANDLE_ERROR;
}
if (!error && events) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unhandled event %d for monitor fd %d"),
events, mon->fd);
error = 1;
}
}
if (error || eof) {
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) {
void (*eofNotify)(qemuMonitorPtr, virDomainObjPtr)
= mon->cb->eofNotify;
virDomainObjPtr vm = mon->vm;
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
virObjectUnlock(mon);
virObjectUnref(mon);
VIR_DEBUG("Triggering EOF callback");
(eofNotify)(mon, vm);
} else if (error) {
void (*errorNotify)(qemuMonitorPtr, virDomainObjPtr)
= mon->cb->errorNotify;
virDomainObjPtr vm = mon->vm;
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
virObjectUnlock(mon);
virObjectUnref(mon);
VIR_DEBUG("Triggering error callback");
(errorNotify)(mon, vm);
} else {
virObjectUnlock(mon);
virObjectUnref(mon);
}
}
static qemuMonitorPtr
qemuMonitorOpenInternal(virDomainObjPtr vm,
int fd,
bool hasSendFD,
int json,
qemuMonitorCallbacksPtr cb)
{
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;
mon->fd = -1;
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 = vm;
mon->json = json;
if (json)
mon->wait_greeting = 1;
mon->cb = cb;
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.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,
int json,
qemuMonitorCallbacksPtr cb)
{
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);
if (!ret)
VIR_FORCE_CLOSE(fd);
return ret;
}
qemuMonitorPtr qemuMonitorOpenFD(virDomainObjPtr vm,
int sockfd,
int json,
qemuMonitorCallbacksPtr cb)
{
return qemuMonitorOpenInternal(vm, sockfd, true, json, cb);
}
void qemuMonitorClose(qemuMonitorPtr mon)
{
if (!mon)
return;
virObjectLock(mon);
PROBE(QEMU_MONITOR_CLOSE,
"mon=%p refs=%d", mon, mon->parent.parent.refs);
if (mon->fd >= 0) {
if (mon->watch) {
virEventRemoveHandle(mon->watch);
mon->watch = 0;
}
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);
}
virObjectUnlock(mon);
virObjectUnref(mon);
}
char *qemuMonitorNextCommandID(qemuMonitorPtr mon)
{
char *id;
if (virAsprintf(&id, "libvirt-%d", ++mon->nextSerial) < 0) {
virReportOOMError();
return NULL;
}
return id;
}
int qemuMonitorSend(qemuMonitorPtr mon,
qemuMonitorMessagePtr msg)
{
int ret = -1;
/* Check whether qemu quited 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;
}
int qemuMonitorHMPCommandWithFd(qemuMonitorPtr mon,
const char *cmd,
int scm_fd,
char **reply)
{
char *json_cmd = NULL;
int ret = -1;
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__); \
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 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 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 qemuMonitorSetCapabilities(qemuMonitorPtr mon)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json) {
ret = qemuMonitorJSONSetCapabilities(mon);
if (ret < 0)
goto cleanup;
} else {
ret = 0;
}
cleanup:
return ret;
}
int
qemuMonitorStartCPUs(qemuMonitorPtr mon,
virConnectPtr conn)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONStartCPUs(mon, conn);
else
ret = qemuMonitorTextStartCPUs(mon, conn);
return ret;
}
int
qemuMonitorStopCPUs(qemuMonitorPtr mon)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONStopCPUs(mon);
else
ret = qemuMonitorTextStopCPUs(mon);
return ret;
}
int
qemuMonitorGetStatus(qemuMonitorPtr mon,
bool *running,
virDomainPausedReason *reason)
{
int ret;
VIR_DEBUG("mon=%p, running=%p, reason=%p", mon, running, reason);
if (!mon || !running) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("both monitor and running must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetStatus(mon, running, reason);
else
ret = qemuMonitorTextGetStatus(mon, running, reason);
return ret;
}
int qemuMonitorSystemPowerdown(qemuMonitorPtr mon)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSystemPowerdown(mon);
else
ret = qemuMonitorTextSystemPowerdown(mon);
return ret;
}
int qemuMonitorSystemReset(qemuMonitorPtr mon)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSystemReset(mon);
else
ret = qemuMonitorTextSystemReset(mon);
return ret;
}
int qemuMonitorGetCPUInfo(qemuMonitorPtr mon,
int **pids)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetCPUInfo(mon, pids);
else
ret = qemuMonitorTextGetCPUInfo(mon, pids);
return ret;
}
int qemuMonitorSetLink(qemuMonitorPtr mon,
const char *name,
enum virDomainNetInterfaceLinkState state)
{
int ret;
VIR_DEBUG("mon=%p, name=%p:%s, state=%u", mon, name, name, state);
if (!mon || !name) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor || name must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetLink(mon, name, state);
else
ret = qemuMonitorTextSetLink(mon, name, state);
return ret;
}
int qemuMonitorGetVirtType(qemuMonitorPtr mon,
int *virtType)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetVirtType(mon, virtType);
else
ret = qemuMonitorTextGetVirtType(mon, virtType);
return ret;
}
int qemuMonitorGetBalloonInfo(qemuMonitorPtr mon,
unsigned long long *currmem)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetBalloonInfo(mon, currmem);
else
ret = qemuMonitorTextGetBalloonInfo(mon, currmem);
return ret;
}
int qemuMonitorGetMemoryStats(qemuMonitorPtr mon,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
int ret;
VIR_DEBUG("mon=%p stats=%p nstats=%u", mon, stats, nr_stats);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetMemoryStats(mon, stats, nr_stats);
else
ret = qemuMonitorTextGetMemoryStats(mon, stats, nr_stats);
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;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return NULL;
}
if (!(table = virHashCreate(32, (virHashDataFree) free)))
return NULL;
if (mon->json)
ret = qemuMonitorJSONGetBlockInfo(mon, table);
else
ret = qemuMonitorTextGetBlockInfo(mon, table);
if (ret < 0) {
virHashFree(table);
return NULL;
}
return table;
}
struct qemuDomainDiskInfo *
qemuMonitorBlockInfoLookup(virHashTablePtr blockInfo,
const char *dev)
{
struct qemuDomainDiskInfo *info;
VIR_DEBUG("blockInfo=%p dev=%s", blockInfo, NULLSTR(dev));
if (!(info = virHashLookup(blockInfo, dev))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find info for device '%s'"),
NULLSTR(dev));
}
return info;
}
int qemuMonitorGetBlockStatsInfo(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;
VIR_DEBUG("mon=%p dev=%s", mon, dev_name);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetBlockStatsInfo(mon, dev_name,
rd_req, rd_bytes,
rd_total_times,
wr_req, wr_bytes,
wr_total_times,
flush_req,
flush_total_times,
errs);
else
ret = qemuMonitorTextGetBlockStatsInfo(mon, dev_name,
rd_req, rd_bytes,
rd_total_times,
wr_req, wr_bytes,
wr_total_times,
flush_req,
flush_total_times,
errs);
return ret;
}
/* Return 0 and update @nparams with the number of block stats
* QEMU supports if success. Return -1 if failure.
*/
int qemuMonitorGetBlockStatsParamsNumber(qemuMonitorPtr mon,
int *nparams)
{
int ret;
VIR_DEBUG("mon=%p nparams=%p", mon, nparams);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetBlockStatsParamsNumber(mon, nparams);
else
ret = qemuMonitorTextGetBlockStatsParamsNumber(mon, nparams);
return ret;
}
int qemuMonitorGetBlockExtent(qemuMonitorPtr mon,
const char *dev_name,
unsigned long long *extent)
{
int ret;
VIR_DEBUG("mon=%p, dev_name=%p", mon, dev_name);
if (mon->json)
ret = qemuMonitorJSONGetBlockExtent(mon, dev_name, extent);
else
ret = qemuMonitorTextGetBlockExtent(mon, dev_name, extent);
return ret;
}
int qemuMonitorBlockResize(qemuMonitorPtr mon,
const char *device,
unsigned long long size)
{
int ret;
VIR_DEBUG("mon=%p, devname=%p size=%llu", mon, device, size);
if (mon->json)
ret = qemuMonitorJSONBlockResize(mon, device, size);
else
ret = qemuMonitorTextBlockResize(mon, device, size);
return ret;
}
int qemuMonitorSetVNCPassword(qemuMonitorPtr mon,
const char *password)
{
int ret;
VIR_DEBUG("mon=%p, password=%p",
mon, password);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!password)
password = "";
if (mon->json)
ret = qemuMonitorJSONSetVNCPassword(mon, password);
else
ret = qemuMonitorTextSetVNCPassword(mon, password);
return ret;
}
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);
int ret;
if (!protocol)
return -1;
VIR_DEBUG("mon=%p, protocol=%s, password=%p, action_if_connected=%s",
mon, protocol, password, action_if_connected);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!password)
password = "";
if (!action_if_connected)
action_if_connected = "keep";
if (mon->json)
ret = qemuMonitorJSONSetPassword(mon, protocol, password, action_if_connected);
else
ret = qemuMonitorTextSetPassword(mon, protocol, password, action_if_connected);
return ret;
}
int qemuMonitorExpirePassword(qemuMonitorPtr mon,
int type,
const char *expire_time)
{
const char *protocol = qemuMonitorTypeToProtocol(type);
int ret;
if (!protocol)
return -1;
VIR_DEBUG("mon=%p, protocol=%s, expire_time=%s",
mon, protocol, expire_time);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!expire_time)
expire_time = "now";
if (mon->json)
ret = qemuMonitorJSONExpirePassword(mon, protocol, expire_time);
else
ret = qemuMonitorTextExpirePassword(mon, protocol, expire_time);
return ret;
}
int qemuMonitorSetBalloon(qemuMonitorPtr mon,
unsigned long newmem)
{
int ret;
VIR_DEBUG("mon=%p newmem=%lu", mon, newmem);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetBalloon(mon, newmem);
else
ret = qemuMonitorTextSetBalloon(mon, newmem);
return ret;
}
int qemuMonitorSetCPU(qemuMonitorPtr mon, int cpu, int online)
{
int ret;
VIR_DEBUG("mon=%p cpu=%d online=%d", mon, cpu, online);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetCPU(mon, cpu, online);
else
ret = qemuMonitorTextSetCPU(mon, cpu, online);
return ret;
}
int qemuMonitorEjectMedia(qemuMonitorPtr mon,
const char *dev_name,
bool force)
{
int ret;
VIR_DEBUG("mon=%p dev_name=%s force=%d", mon, dev_name, force);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONEjectMedia(mon, dev_name, force);
else
ret = qemuMonitorTextEjectMedia(mon, dev_name, force);
return ret;
}
int qemuMonitorChangeMedia(qemuMonitorPtr mon,
const char *dev_name,
const char *newmedia,
const char *format)
{
int ret;
VIR_DEBUG("mon=%p dev_name=%s newmedia=%s format=%s",
mon, dev_name, newmedia, format);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONChangeMedia(mon, dev_name, newmedia, format);
else
ret = qemuMonitorTextChangeMedia(mon, dev_name, newmedia, format);
return ret;
}
int qemuMonitorSaveVirtualMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
int ret;
VIR_DEBUG("mon=%p offset=%llu length=%zu path=%s",
mon, offset, length, path);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSaveVirtualMemory(mon, offset, length, path);
else
ret = qemuMonitorTextSaveVirtualMemory(mon, offset, length, path);
return ret;
}
int qemuMonitorSavePhysicalMemory(qemuMonitorPtr mon,
unsigned long long offset,
size_t length,
const char *path)
{
int ret;
VIR_DEBUG("mon=%p offset=%llu length=%zu path=%s",
mon, offset, length, path);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSavePhysicalMemory(mon, offset, length, path);
else
ret = qemuMonitorTextSavePhysicalMemory(mon, offset, length, path);
return ret;
}
int qemuMonitorSetMigrationSpeed(qemuMonitorPtr mon,
unsigned long bandwidth)
{
int ret;
VIR_DEBUG("mon=%p bandwidth=%lu", mon, bandwidth);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetMigrationSpeed(mon, bandwidth);
else
ret = qemuMonitorTextSetMigrationSpeed(mon, bandwidth);
return ret;
}
int qemuMonitorSetMigrationDowntime(qemuMonitorPtr mon,
unsigned long long downtime)
{
int ret;
VIR_DEBUG("mon=%p downtime=%llu", mon, downtime);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetMigrationDowntime(mon, downtime);
else
ret = qemuMonitorTextSetMigrationDowntime(mon, downtime);
return ret;
}
int
qemuMonitorGetMigrationCacheSize(qemuMonitorPtr mon,
unsigned long long *cacheSize)
{
VIR_DEBUG("mon=%p cacheSize=%p", mon, cacheSize);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetMigrationCacheSize(mon, cacheSize);
}
int
qemuMonitorSetMigrationCacheSize(qemuMonitorPtr mon,
unsigned long long cacheSize)
{
VIR_DEBUG("mon=%p cacheSize=%llu", mon, cacheSize);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONSetMigrationCacheSize(mon, cacheSize);
}
int qemuMonitorGetMigrationStatus(qemuMonitorPtr mon,
qemuMonitorMigrationStatusPtr status)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetMigrationStatus(mon, status);
else
ret = qemuMonitorTextGetMigrationStatus(mon, status);
return ret;
}
int qemuMonitorGetSpiceMigrationStatus(qemuMonitorPtr mon,
bool *spice_migrated)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json) {
ret = qemuMonitorJSONGetSpiceMigrationStatus(mon, spice_migrated);
} else {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return ret;
}
int qemuMonitorMigrateToFd(qemuMonitorPtr mon,
unsigned int flags,
int fd)
{
int ret;
VIR_DEBUG("mon=%p fd=%d flags=%x",
mon, fd, flags);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
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 *hostname,
int port)
{
int ret;
char *uri = NULL;
VIR_DEBUG("mon=%p hostname=%s port=%d flags=%x",
mon, hostname, port, flags);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (virAsprintf(&uri, "tcp:%s:%d", hostname, port) < 0) {
virReportOOMError();
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("mon=%p argv=%p flags=%x",
mon, argv, flags);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
argstr = virArgvToString(argv);
if (!argstr) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&dest, "exec:%s", argstr) < 0) {
virReportOOMError();
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 qemuMonitorMigrateToFile(qemuMonitorPtr mon,
unsigned int flags,
const char * const *argv,
const char *target,
unsigned long long offset)
{
char *argstr;
char *dest = NULL;
int ret = -1;
char *safe_target = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
VIR_DEBUG("mon=%p argv=%p target=%s offset=%llu flags=%x",
mon, argv, target, offset, flags);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (offset % QEMU_MONITOR_MIGRATE_TO_FILE_BS) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("file offset must be a multiple of %llu"),
QEMU_MONITOR_MIGRATE_TO_FILE_BS);
return -1;
}
argstr = virArgvToString(argv);
if (!argstr) {
virReportOOMError();
goto cleanup;
}
/* Migrate to file */
virBufferEscapeShell(&buf, target);
if (virBufferError(&buf)) {
virReportOOMError();
virBufferFreeAndReset(&buf);
goto cleanup;
}
safe_target = virBufferContentAndReset(&buf);
/* Two dd processes, sharing the same stdout, are necessary to
* allow starting at an alignment of 512, but without wasting
* padding to get to the larger alignment useful for speed. Use
* <> redirection to avoid truncating a regular file. */
if (virAsprintf(&dest, "exec:" VIR_WRAPPER_SHELL_PREFIX "%s | "
"{ dd bs=%llu seek=%llu if=/dev/null && "
"dd ibs=%llu obs=%llu; } 1<>%s" VIR_WRAPPER_SHELL_SUFFIX,
argstr, QEMU_MONITOR_MIGRATE_TO_FILE_BS,
offset / QEMU_MONITOR_MIGRATE_TO_FILE_BS,
QEMU_MONITOR_MIGRATE_TO_FILE_TRANSFER_SIZE,
QEMU_MONITOR_MIGRATE_TO_FILE_TRANSFER_SIZE,
safe_target) < 0) {
virReportOOMError();
goto cleanup;
}
if (mon->json)
ret = qemuMonitorJSONMigrate(mon, flags, dest);
else
ret = qemuMonitorTextMigrate(mon, flags, dest);
cleanup:
VIR_FREE(safe_target);
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("mon=%p, unixfile=%s flags=%x",
mon, unixfile, flags);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (virAsprintf(&dest, "unix:%s", unixfile) < 0) {
virReportOOMError();
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)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONMigrateCancel(mon);
else
ret = qemuMonitorTextMigrateCancel(mon);
return ret;
}
int
qemuMonitorDumpToFd(qemuMonitorPtr mon, int fd)
{
int ret;
VIR_DEBUG("mon=%p fd=%d", mon, fd);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
/* We don't have qemuMonitorTextDump(), so we should check mon->json
* here.
*/
virReportError(VIR_ERR_NO_SUPPORT, "%s",
_("dump-guest-memory is not supported in text mode"));
return -1;
}
if (qemuMonitorSendFileHandle(mon, "dump", fd) < 0)
return -1;
ret = qemuMonitorJSONDump(mon, "fd:dump");
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)
{
int ret;
VIR_DEBUG("mon=%p type=%d hostname=%s port=%d tlsPort=%d tlsSubject=%s",
mon, type, hostname, port, tlsPort, NULLSTR(tlsSubject));
if (mon->json)
ret = qemuMonitorJSONGraphicsRelocate(mon,
type,
hostname,
port,
tlsPort,
tlsSubject);
else
ret = qemuMonitorTextGraphicsRelocate(mon,
type,
hostname,
port,
tlsPort,
tlsSubject);
return ret;
}
int qemuMonitorAddUSBDisk(qemuMonitorPtr mon,
const char *path)
{
int ret;
VIR_DEBUG("mon=%p path=%s", mon, path);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddUSBDisk(mon, path);
else
ret = qemuMonitorTextAddUSBDisk(mon, path);
return ret;
}
int qemuMonitorAddUSBDeviceExact(qemuMonitorPtr mon,
int bus,
int dev)
{
int ret;
VIR_DEBUG("mon=%p bus=%d dev=%d", mon, bus, dev);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddUSBDeviceExact(mon, bus, dev);
else
ret = qemuMonitorTextAddUSBDeviceExact(mon, bus, dev);
return ret;
}
int qemuMonitorAddUSBDeviceMatch(qemuMonitorPtr mon,
int vendor,
int product)
{
int ret;
VIR_DEBUG("mon=%p vendor=%d product=%d",
mon, vendor, product);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddUSBDeviceMatch(mon, vendor, product);
else
ret = qemuMonitorTextAddUSBDeviceMatch(mon, vendor, product);
return ret;
}
int qemuMonitorAddPCIHostDevice(qemuMonitorPtr mon,
virDevicePCIAddress *hostAddr,
virDevicePCIAddress *guestAddr)
{
int ret;
VIR_DEBUG("mon=%p domain=%d bus=%d slot=%d function=%d",
mon,
hostAddr->domain, hostAddr->bus, hostAddr->slot, hostAddr->function);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddPCIHostDevice(mon, hostAddr, guestAddr);
else
ret = qemuMonitorTextAddPCIHostDevice(mon, hostAddr, guestAddr);
return ret;
}
int qemuMonitorAddPCIDisk(qemuMonitorPtr mon,
const char *path,
const char *bus,
virDevicePCIAddress *guestAddr)
{
int ret;
VIR_DEBUG("mon=%p path=%s bus=%s",
mon, path, bus);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddPCIDisk(mon, path, bus, guestAddr);
else
ret = qemuMonitorTextAddPCIDisk(mon, path, bus, guestAddr);
return ret;
}
int qemuMonitorAddPCINetwork(qemuMonitorPtr mon,
const char *nicstr,
virDevicePCIAddress *guestAddr)
{
int ret;
VIR_DEBUG("mon=%p nicstr=%s", mon, nicstr);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddPCINetwork(mon, nicstr, guestAddr);
else
ret = qemuMonitorTextAddPCINetwork(mon, nicstr, guestAddr);
return ret;
}
int qemuMonitorRemovePCIDevice(qemuMonitorPtr mon,
virDevicePCIAddress *guestAddr)
{
int ret;
VIR_DEBUG("mon=%p domain=%d bus=%d slot=%d function=%d",
mon, guestAddr->domain, guestAddr->bus,
guestAddr->slot, guestAddr->function);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONRemovePCIDevice(mon, guestAddr);
else
ret = qemuMonitorTextRemovePCIDevice(mon, guestAddr);
return ret;
}
int qemuMonitorSendFileHandle(qemuMonitorPtr mon,
const char *fdname,
int fd)
{
int ret;
VIR_DEBUG("mon=%p, fdname=%s fd=%d",
mon, fdname, fd);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
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)
ret = qemuMonitorJSONSendFileHandle(mon, fdname, fd);
else
ret = qemuMonitorTextSendFileHandle(mon, fdname, fd);
return ret;
}
int qemuMonitorCloseFileHandle(qemuMonitorPtr mon,
const char *fdname)
{
int ret = -1;
virErrorPtr error;
VIR_DEBUG("mon=%p fdname=%s",
mon, fdname);
error = virSaveLastError();
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
goto 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)
{
int ret = -1;
VIR_DEBUG("mon=%p, fdset=%d, fd=%d, name=%s",
mon, fdset, fd, NULLSTR(name));
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
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;
}
if (mon->json)
ret = qemuMonitorJSONAddFd(mon, fdset, fd, name);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("add fd requires JSON monitor"));
return ret;
}
/* 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("mon=%p, fdset=%d, fd=%d", mon, fdset, fd);
error = virSaveLastError();
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
goto cleanup;
}
if (mon->json)
ret = qemuMonitorJSONRemoveFd(mon, fdset, fd);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("remove fd requires JSON monitor"));
cleanup:
if (error) {
virSetError(error);
virFreeError(error);
}
return ret;
}
int qemuMonitorAddHostNetwork(qemuMonitorPtr mon,
const char *netstr,
int tapfd, const char *tapfd_name,
int vhostfd, const char *vhostfd_name)
{
int ret = -1;
VIR_DEBUG("mon=%p netstr=%s tapfd=%d tapfd_name=%s "
"vhostfd=%d vhostfd_name=%s",
mon, netstr, tapfd, NULLSTR(tapfd_name),
vhostfd, NULLSTR(vhostfd_name));
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (tapfd >= 0 && qemuMonitorSendFileHandle(mon, tapfd_name, tapfd) < 0)
return -1;
if (vhostfd >= 0 &&
qemuMonitorSendFileHandle(mon, vhostfd_name, vhostfd) < 0) {
vhostfd = -1;
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) {
if (tapfd >= 0 && qemuMonitorCloseFileHandle(mon, tapfd_name) < 0)
VIR_WARN("failed to close device handle '%s'", tapfd_name);
if (vhostfd >= 0 && qemuMonitorCloseFileHandle(mon, vhostfd_name) < 0)
VIR_WARN("failed to close device handle '%s'", vhostfd_name);
}
return ret;
}
int qemuMonitorRemoveHostNetwork(qemuMonitorPtr mon,
int vlan,
const char *netname)
{
int ret = -1;
VIR_DEBUG("mon=%p netname=%s",
mon, netname);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor should be using RemoveNetdev"));
else
ret = qemuMonitorTextRemoveHostNetwork(mon, vlan, netname);
return ret;
}
int qemuMonitorAddNetdev(qemuMonitorPtr mon,
const char *netdevstr,
int tapfd, const char *tapfd_name,
int vhostfd, const char *vhostfd_name)
{
int ret = -1;
VIR_DEBUG("mon=%p netdevstr=%s tapfd=%d tapfd_name=%s "
"vhostfd=%d vhostfd_name=%s",
mon, netdevstr, tapfd, NULLSTR(tapfd_name),
vhostfd, NULLSTR(vhostfd_name));
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (tapfd >= 0 && qemuMonitorSendFileHandle(mon, tapfd_name, tapfd) < 0)
return -1;
if (vhostfd >= 0 &&
qemuMonitorSendFileHandle(mon, vhostfd_name, vhostfd) < 0) {
vhostfd = -1;
goto cleanup;
}
if (mon->json)
ret = qemuMonitorJSONAddNetdev(mon, netdevstr);
else
ret = qemuMonitorTextAddNetdev(mon, netdevstr);
cleanup:
if (ret < 0) {
if (tapfd >= 0 && qemuMonitorCloseFileHandle(mon, tapfd_name) < 0)
VIR_WARN("failed to close device handle '%s'", tapfd_name);
if (vhostfd >= 0 && qemuMonitorCloseFileHandle(mon, vhostfd_name) < 0)
VIR_WARN("failed to close device handle '%s'", vhostfd_name);
}
return ret;
}
int qemuMonitorRemoveNetdev(qemuMonitorPtr mon,
const char *alias)
{
int ret;
VIR_DEBUG("mon=%p alias=%s",
mon, alias);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONRemoveNetdev(mon, alias);
else
ret = qemuMonitorTextRemoveNetdev(mon, alias);
return ret;
}
int qemuMonitorGetPtyPaths(qemuMonitorPtr mon,
virHashTablePtr paths)
{
int ret;
VIR_DEBUG("mon=%p",
mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetPtyPaths(mon, paths);
else
ret = qemuMonitorTextGetPtyPaths(mon, paths);
return ret;
}
int qemuMonitorAttachPCIDiskController(qemuMonitorPtr mon,
const char *bus,
virDevicePCIAddress *guestAddr)
{
VIR_DEBUG("mon=%p type=%s", mon, bus);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAttachPCIDiskController(mon, bus, guestAddr);
else
ret = qemuMonitorTextAttachPCIDiskController(mon, bus, guestAddr);
return ret;
}
int qemuMonitorAttachDrive(qemuMonitorPtr mon,
const char *drivestr,
virDevicePCIAddress *controllerAddr,
virDomainDeviceDriveAddress *driveAddr)
{
VIR_DEBUG("mon=%p drivestr=%s domain=%d bus=%d slot=%d function=%d",
mon, drivestr,
controllerAddr->domain, controllerAddr->bus,
controllerAddr->slot, controllerAddr->function);
int ret = 1;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor should be using AddDrive"));
else
ret = qemuMonitorTextAttachDrive(mon, drivestr, controllerAddr, driveAddr);
return ret;
}
int qemuMonitorGetAllPCIAddresses(qemuMonitorPtr mon,
qemuMonitorPCIAddress **addrs)
{
VIR_DEBUG("mon=%p addrs=%p", mon, addrs);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONGetAllPCIAddresses(mon, addrs);
else
ret = qemuMonitorTextGetAllPCIAddresses(mon, addrs);
return ret;
}
int qemuMonitorDriveDel(qemuMonitorPtr mon,
const char *drivestr)
{
VIR_DEBUG("mon=%p drivestr=%s", mon, drivestr);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONDriveDel(mon, drivestr);
else
ret = qemuMonitorTextDriveDel(mon, drivestr);
return ret;
}
int qemuMonitorDelDevice(qemuMonitorPtr mon,
const char *devalias)
{
VIR_DEBUG("mon=%p devalias=%s", mon, devalias);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONDelDevice(mon, devalias);
else
ret = qemuMonitorTextDelDevice(mon, devalias);
return ret;
}
int qemuMonitorAddDeviceWithFd(qemuMonitorPtr mon,
const char *devicestr,
int fd,
const char *fdname)
{
VIR_DEBUG("mon=%p device=%s fd=%d fdname=%s", mon, devicestr, fd,
NULLSTR(fdname));
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
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);
}
int qemuMonitorAddDrive(qemuMonitorPtr mon,
const char *drivestr)
{
VIR_DEBUG("mon=%p drive=%s", mon, drivestr);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONAddDrive(mon, drivestr);
else
ret = qemuMonitorTextAddDrive(mon, drivestr);
return ret;
}
int qemuMonitorSetDrivePassphrase(qemuMonitorPtr mon,
const char *alias,
const char *passphrase)
{
VIR_DEBUG("mon=%p alias=%s passphrase=%p(value hidden)", mon, alias, passphrase);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONSetDrivePassphrase(mon, alias, passphrase);
else
ret = qemuMonitorTextSetDrivePassphrase(mon, alias, passphrase);
return ret;
}
int qemuMonitorCreateSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
VIR_DEBUG("mon=%p, name=%s",mon,name);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONCreateSnapshot(mon, name);
else
ret = qemuMonitorTextCreateSnapshot(mon, name);
return ret;
}
int qemuMonitorLoadSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
VIR_DEBUG("mon=%p, name=%s",mon,name);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONLoadSnapshot(mon, name);
else
ret = qemuMonitorTextLoadSnapshot(mon, name);
return ret;
}
int qemuMonitorDeleteSnapshot(qemuMonitorPtr mon, const char *name)
{
int ret;
VIR_DEBUG("mon=%p, name=%s",mon,name);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONDeleteSnapshot(mon, name);
else
ret = qemuMonitorTextDeleteSnapshot(mon, name);
return ret;
}
/* 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)
{
int ret = -1;
VIR_DEBUG("mon=%p, actions=%p, device=%s, file=%s, format=%s, reuse=%d",
mon, actions, device, file, format, reuse);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONDiskSnapshot(mon, actions, device, file, format,
reuse);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("disk snapshot requires JSON monitor"));
return ret;
}
/* Start a drive-mirror block job. bandwidth is in MiB/sec. */
int
qemuMonitorDriveMirror(qemuMonitorPtr mon,
const char *device, const char *file,
const char *format, unsigned long bandwidth,
unsigned int flags)
{
int ret = -1;
unsigned long long speed;
VIR_DEBUG("mon=%p, device=%s, file=%s, format=%s, bandwidth=%ld, "
"flags=%x",
mon, device, file, NULLSTR(format), bandwidth, flags);
/* Convert bandwidth MiB to bytes */
speed = bandwidth;
if (speed > ULLONG_MAX / 1024 / 1024) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
ULLONG_MAX / 1024 / 1024);
return -1;
}
speed <<= 20;
if (mon->json)
ret = qemuMonitorJSONDriveMirror(mon, device, file, format, speed,
flags);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("drive-mirror requires JSON monitor"));
return ret;
}
/* Use the transaction QMP command to run atomic snapshot commands. */
int
qemuMonitorTransaction(qemuMonitorPtr mon, virJSONValuePtr actions)
{
int ret = -1;
VIR_DEBUG("mon=%p, actions=%p", mon, actions);
if (mon->json)
ret = qemuMonitorJSONTransaction(mon, actions);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("transaction requires JSON monitor"));
return ret;
}
/* Start a block-commit block job. bandwidth is in MiB/sec. */
int
qemuMonitorBlockCommit(qemuMonitorPtr mon, const char *device,
const char *top, const char *base,
unsigned long bandwidth)
{
int ret = -1;
unsigned long long speed;
VIR_DEBUG("mon=%p, device=%s, top=%s, base=%s, bandwidth=%ld",
mon, device, NULLSTR(top), NULLSTR(base), bandwidth);
/* Convert bandwidth MiB to bytes */
speed = bandwidth;
if (speed > ULLONG_MAX / 1024 / 1024) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
ULLONG_MAX / 1024 / 1024);
return -1;
}
speed <<= 20;
if (mon->json)
ret = qemuMonitorJSONBlockCommit(mon, device, top, base, speed);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("block-commit requires JSON monitor"));
return ret;
}
/* Use the block-job-complete monitor command to pivot a block copy
* job. */
int
qemuMonitorDrivePivot(qemuMonitorPtr mon, const char *device,
const char *file, const char *format)
{
int ret = -1;
VIR_DEBUG("mon=%p, device=%s, file=%s, format=%s",
mon, device, file, NULLSTR(format));
if (mon->json)
ret = qemuMonitorJSONDrivePivot(mon, device, file, format);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("drive pivot requires JSON monitor"));
return ret;
}
int qemuMonitorArbitraryCommand(qemuMonitorPtr mon,
const char *cmd,
char **reply,
bool hmp)
{
int ret;
VIR_DEBUG("mon=%p, cmd=%s, reply=%p, hmp=%d", mon, cmd, reply, hmp);
if (mon->json)
ret = qemuMonitorJSONArbitraryCommand(mon, cmd, reply, hmp);
else
ret = qemuMonitorTextArbitraryCommand(mon, cmd, reply);
return ret;
}
int qemuMonitorInjectNMI(qemuMonitorPtr mon)
{
int ret;
VIR_DEBUG("mon=%p", mon);
if (mon->json)
ret = qemuMonitorJSONInjectNMI(mon);
else
ret = qemuMonitorTextInjectNMI(mon);
return ret;
}
int qemuMonitorSendKey(qemuMonitorPtr mon,
unsigned int holdtime,
unsigned int *keycodes,
unsigned int nkeycodes)
{
int ret;
VIR_DEBUG("mon=%p, holdtime=%u, nkeycodes=%u",
mon, holdtime, nkeycodes);
if (mon->json)
ret = qemuMonitorJSONSendKey(mon, holdtime, keycodes, nkeycodes);
else
ret = qemuMonitorTextSendKey(mon, holdtime, keycodes, nkeycodes);
return ret;
}
int qemuMonitorScreendump(qemuMonitorPtr mon,
const char *file)
{
int ret;
VIR_DEBUG("mon=%p, file=%s", mon, file);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG,"%s",
_("monitor must not be NULL"));
return -1;
}
if (mon->json)
ret = qemuMonitorJSONScreendump(mon, file);
else
ret = qemuMonitorTextScreendump(mon, file);
return ret;
}
/* bandwidth is in MiB/sec */
int qemuMonitorBlockJob(qemuMonitorPtr mon,
const char *device,
const char *base,
unsigned long bandwidth,
virDomainBlockJobInfoPtr info,
qemuMonitorBlockJobCmd mode,
bool modern)
{
int ret = -1;
unsigned long long speed;
VIR_DEBUG("mon=%p, device=%s, base=%s, bandwidth=%luM, info=%p, mode=%o, "
"modern=%d", mon, device, NULLSTR(base), bandwidth, info, mode,
modern);
/* Convert bandwidth MiB to bytes */
speed = bandwidth;
if (speed > ULLONG_MAX / 1024 / 1024) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
ULLONG_MAX / 1024 / 1024);
return -1;
}
speed <<= 20;
if (mon->json)
ret = qemuMonitorJSONBlockJob(mon, device, base, speed, info, mode,
modern);
else
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("block jobs require JSON monitor"));
return ret;
}
int qemuMonitorSetBlockIoThrottle(qemuMonitorPtr mon,
const char *device,
virDomainBlockIoTuneInfoPtr info)
{
int ret;
VIR_DEBUG("mon=%p, device=%p, info=%p", mon, device, info);
if (mon->json) {
ret = qemuMonitorJSONSetBlockIoThrottle(mon, device, info);
} else {
ret = qemuMonitorTextSetBlockIoThrottle(mon, device, info);
}
return ret;
}
int qemuMonitorGetBlockIoThrottle(qemuMonitorPtr mon,
const char *device,
virDomainBlockIoTuneInfoPtr reply)
{
int ret;
VIR_DEBUG("mon=%p, device=%p, reply=%p", mon, device, reply);
if (mon->json) {
ret = qemuMonitorJSONGetBlockIoThrottle(mon, device, reply);
} else {
ret = qemuMonitorTextGetBlockIoThrottle(mon, device, reply);
}
return ret;
}
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;
/* 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("mon=%p protocol=%s fd=%d fdname=%s skipauth=%d",
mon, protocol, fd, NULLSTR(fdname), skipauth);
int ret;
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
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)
{
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONSystemWakeup(mon);
}
int qemuMonitorGetVersion(qemuMonitorPtr mon,
int *major,
int *minor,
int *micro,
char **package)
{
VIR_DEBUG("mon=%p major=%p minor=%p micro=%p package=%p",
mon, major, minor, micro, package);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetVersion(mon, major, minor, micro, package);
}
int qemuMonitorGetMachines(qemuMonitorPtr mon,
qemuMonitorMachineInfoPtr **machines)
{
VIR_DEBUG("mon=%p machines=%p",
mon, machines);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
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("mon=%p cpus=%p",
mon, cpus);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetCPUDefinitions(mon, cpus);
}
int qemuMonitorGetCommands(qemuMonitorPtr mon,
char ***commands)
{
VIR_DEBUG("mon=%p commands=%p",
mon, commands);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetCommands(mon, commands);
}
int qemuMonitorGetEvents(qemuMonitorPtr mon,
char ***events)
{
VIR_DEBUG("mon=%p events=%p",
mon, events);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetEvents(mon, events);
}
int qemuMonitorGetKVMState(qemuMonitorPtr mon,
bool *enabled,
bool *present)
{
VIR_DEBUG("mon=%p enabled=%p present=%p",
mon, enabled, present);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetKVMState(mon, enabled, present);
}
int qemuMonitorGetObjectTypes(qemuMonitorPtr mon,
char ***types)
{
VIR_DEBUG("mon=%p types=%p",
mon, types);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetObjectTypes(mon, types);
}
int qemuMonitorGetObjectProps(qemuMonitorPtr mon,
const char *type,
char ***props)
{
VIR_DEBUG("mon=%p type=%s props=%p",
mon, type, props);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONGetObjectProps(mon, type, props);
}
char *qemuMonitorGetTargetArch(qemuMonitorPtr mon)
{
VIR_DEBUG("mon=%p",
mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return NULL;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return NULL;
}
return qemuMonitorJSONGetTargetArch(mon);
}
/**
* Returns 1 if @capability is supported, 0 if it's not, or -1 on error.
*/
int qemuMonitorGetMigrationCapability(qemuMonitorPtr mon,
qemuMonitorMigrationCaps capability)
{
VIR_DEBUG("mon=%p capability=%d", mon, capability);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
/* No capability is supported without JSON monitor */
if (!mon->json)
return 0;
return qemuMonitorJSONGetMigrationCapability(mon, capability);
}
int qemuMonitorSetMigrationCapability(qemuMonitorPtr mon,
qemuMonitorMigrationCaps capability)
{
VIR_DEBUG("mon=%p capability=%d", mon, capability);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONSetMigrationCapability(mon, capability);
}
int qemuMonitorNBDServerStart(qemuMonitorPtr mon,
const char *host,
unsigned int port)
{
VIR_DEBUG("mon=%p host=%s port=%u",
mon, host, port);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONNBDServerStart(mon, host, port);
}
int qemuMonitorNBDServerAdd(qemuMonitorPtr mon,
const char *deviceID,
bool writable)
{
VIR_DEBUG("mon=%p deviceID=%s",
mon, deviceID);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONNBDServerAdd(mon, deviceID, writable);
}
int qemuMonitorNBDServerStop(qemuMonitorPtr mon)
{
VIR_DEBUG("mon=%p", mon);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("monitor must not be NULL"));
return -1;
}
if (!mon->json) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("JSON monitor is required"));
return -1;
}
return qemuMonitorJSONNBDServerStop(mon);
}
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