/* * 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 * . * * Author: Daniel P. Berrange */ #include #include #include #include #include #include #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 "virstring.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; 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 fd of the qemu process to dig for usable info */ int logfd; }; 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", "guest-panic") 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 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')) 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, mon->callbackOpaque); virObjectUnref(mon->vm); virResetError(&mon->lastError); virCondDestroy(&mon->notify); VIR_FREE(mon->buffer); virJSONValueFree(mon->options); VIR_FREE(mon->balloonpath); VIR_FORCE_CLOSE(mon->logfd); } static int qemuMonitorOpenUnix(const char *monitor, pid_t cpid) { struct sockaddr_un addr; int monfd; int timeout = 3; /* In seconds */ int ret; size_t 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; } /* Get a possible error from qemu's log. This function closes the * corresponding log fd */ static char * qemuMonitorGetErrorFromLog(qemuMonitorPtr mon) { int len; char *logbuf = NULL; int orig_errno = errno; if (mon->logfd < 0) return NULL; if (VIR_ALLOC_N_QUIET(logbuf, 4096) < 0) goto error; if ((len = qemuProcessReadLog(mon->logfd, logbuf, 4096 - 1, 0, true)) <= 0) goto error; cleanup: errno = orig_errno; VIR_FORCE_CLOSE(mon->logfd); return logbuf; error: VIR_FREE(logbuf); goto cleanup; } /* 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; /* 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) 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; 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 (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) { /* 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 where the message from qemu is certainly more * interesting than a "connection reset by peer" message. */ char *qemuMessage; if ((qemuMessage = qemuMonitorGetErrorFromLog(mon))) { virReportError(VIR_ERR_INTERNAL_ERROR, _("early end of file from monitor: " "possible problem:\n%s"), qemuMessage); virCopyLastError(&mon->lastError); virResetLastError(); } VIR_FREE(qemuMessage); } 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); virObjectUnref(mon); VIR_DEBUG("Triggering EOF callback"); (eofNotify)(mon, vm, mon->callbackOpaque); } else if (error) { qemuMonitorErrorNotifyCallback errorNotify = 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, mon->callbackOpaque); } 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; mon->fd = -1; mon->logfd = -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 = 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.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 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; ignore_value(virAsprintf(&id, "libvirt-%d", ++mon->nextSerial)); 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; } 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 it's known name * of "virtio-balloon-pci". The entry for the driver will be found in the * returned 'type' field using the syntax "child". * * 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. * * This procedure will be call recursively until found or the qom-list is * exhausted. * * Returns: * * 1 - Found * 0 - Not found still looking * -1 - Error bail out * * NOTE: This assumes we have already called qemuDomainObjEnterMonitor() */ static int qemuMonitorFindBalloonObjectPath(qemuMonitorPtr mon, virDomainObjPtr vm, const char *curpath) { size_t i, j, npaths = 0, nprops = 0; int ret = 0; char *nextpath = NULL; qemuMonitorJSONListPathPtr *paths = NULL; qemuMonitorJSONListPathPtr *bprops = NULL; if (mon->balloonpath) { return 1; } else if (mon->ballooninit) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Cannot determine balloon device path")); return -1; } /* Not supported */ if (!vm->def->memballoon || vm->def->memballoon->model != VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Memory balloon model must be virtio to " "get memballoon path")); return -1; } VIR_DEBUG("Searching for Balloon Object Path starting at %s", curpath); npaths = qemuMonitorJSONGetObjectListPaths(mon, curpath, &paths); for (i = 0; i < npaths && ret == 0; i++) { if (STREQ_NULLABLE(paths[i]->type, "link")) { VIR_DEBUG("Path to is '%s/%s'", curpath, paths[i]->name); if (virAsprintf(&nextpath, "%s/%s", curpath, paths[i]->name) < 0) { ret = -1; goto cleanup; } /* Now look at the each of the property entries to determine * whether "guest-stats-polling-interval" exists. If not, * then this version of qemu/kvm does not support the feature. */ nprops = qemuMonitorJSONGetObjectListPaths(mon, nextpath, &bprops); for (j = 0; j < nprops; j++) { if (STREQ(bprops[j]->name, "guest-stats-polling-interval")) { VIR_DEBUG("Found Balloon Object Path %s", nextpath); mon->balloonpath = nextpath; nextpath = NULL; ret = 1; 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.")); ret = -1; goto cleanup; } /* Type entries that begin with "child<" are a branch that can be * traversed looking for more entries */ if (paths[i]->type && STRPREFIX(paths[i]->type, "child<")) { if (virAsprintf(&nextpath, "%s/%s", curpath, paths[i]->name) < 0) { ret = -1; goto cleanup; } ret = qemuMonitorFindBalloonObjectPath(mon, vm, nextpath); } } cleanup: for (i = 0; i < npaths; i++) qemuMonitorJSONListPathFree(paths[i]); VIR_FREE(paths); for (j = 0; j < nprops; j++) qemuMonitorJSONListPathFree(bprops[j]); VIR_FREE(bprops); VIR_FREE(nextpath); 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__, \ (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 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 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) { ignore_value(qemuMonitorFindBalloonObjectPath(mon, mon->vm, "/")); mon->ballooninit = true; ret = qemuMonitorJSONGetMemoryStats(mon, mon->balloonpath, stats, nr_stats); } else { ret = qemuMonitorTextGetMemoryStats(mon, stats, nr_stats); } return ret; } int qemuMonitorSetMemoryStatsPeriod(qemuMonitorPtr mon, int period) { int ret = -1; VIR_DEBUG("mon=%p period=%d", mon, period); 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; } if (qemuMonitorFindBalloonObjectPath(mon, mon->vm, "/") == 1) { ret = qemuMonitorJSONSetMemoryStatsPeriod(mon, mon->balloonpath, period); } mon->ballooninit = true; 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, bool 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) 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) 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 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) 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) 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) 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_OPERATION_UNSUPPORTED, "%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, char **tapfdName, int tapfdSize, int *vhostfd, char **vhostfdName, int vhostfdSize) { int ret = -1; size_t i = 0, j = 0; VIR_DEBUG("mon=%p netstr=%s tapfd=%p tapfdName=%p tapfdSize=%d " "vhostfd=%p vhostfdName=%p vhostfdSize=%d", mon, netstr, tapfd, tapfdName, tapfdSize, vhostfd, vhostfdName, vhostfdSize); if (!mon) { virReportError(VIR_ERR_INVALID_ARG, "%s", _("monitor must not be NULL")); return -1; } 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) { 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, char **tapfdName, int tapfdSize, int *vhostfd, char **vhostfdName, int vhostfdSize) { int ret = -1; size_t i = 0, j = 0; VIR_DEBUG("mon=%p netdevstr=%s tapfd=%p tapfdName=%p tapfdSize=%d" "vhostfd=%p vhostfdName=%p vhostfdSize=%d", mon, netdevstr, tapfd, tapfdName, tapfdSize, vhostfd, vhostfdName, tapfdSize); if (!mon) { virReportError(VIR_ERR_INVALID_ARG, "%s", _("monitor must not be NULL")); return -1; } 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) { 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 - unfortunately the JSON QMP protocol is * limited to LLONG_MAX also for unsigned values */ speed = bandwidth; if (speed > LLONG_MAX >> 20) { virReportError(VIR_ERR_OVERFLOW, _("bandwidth must be less than %llu"), LLONG_MAX >> 20); 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 - unfortunately the JSON QMP protocol is * limited to LLONG_MAX also for unsigned values */ speed = bandwidth; if (speed > LLONG_MAX >> 20) { virReportError(VIR_ERR_OVERFLOW, _("bandwidth must be less than %llu"), LLONG_MAX >> 20); 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 - unfortunately the JSON QMP protocol is * limited to LLONG_MAX also for unsigned values */ speed = bandwidth; if (speed > LLONG_MAX >> 20) { virReportError(VIR_ERR_OVERFLOW, _("bandwidth must be less than %llu"), LLONG_MAX >> 20); 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; 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("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); } /* 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) { VIR_DEBUG("mon=%p option=%s params=%p", mon, option, params); 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 qemuMonitorJSONGetCommandLineOptionParameters(mon, option, params); } 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); } int qemuMonitorGetTPMModels(qemuMonitorPtr mon, char ***tpmmodels) { VIR_DEBUG("mon=%p tpmmodels=%p", mon, tpmmodels); 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 qemuMonitorJSONGetTPMModels(mon, tpmmodels); } int qemuMonitorGetTPMTypes(qemuMonitorPtr mon, char ***tpmtypes) { VIR_DEBUG("mon=%p tpmtypes=%p", mon, tpmtypes); 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 qemuMonitorJSONGetTPMTypes(mon, tpmtypes); } int qemuMonitorAttachCharDev(qemuMonitorPtr mon, const char *chrID, virDomainChrSourceDefPtr chr) { VIR_DEBUG("mon=%p chrID=%s chr=%p", mon, chrID, chr); 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 qemuMonitorJSONAttachCharDev(mon, chrID, chr); } int qemuMonitorDetachCharDev(qemuMonitorPtr mon, const char *chrID) { VIR_DEBUG("mon=%p chrID=%s", mon, chrID); 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 qemuMonitorJSONDetachCharDev(mon, chrID); } int qemuMonitorGetDeviceAliases(qemuMonitorPtr mon, char ***aliases) { VIR_DEBUG("mon=%p, aliases=%p", mon, aliases); 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 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 * @logfd: File descriptor of the already open log file */ int qemuMonitorSetDomainLog(qemuMonitorPtr mon, int logfd) { VIR_FORCE_CLOSE(mon->logfd); if (logfd >= 0 && (mon->logfd = dup(logfd)) < 0) { virReportSystemError(errno, "%s", _("failed to duplicate log fd")); return -1; } return 0; }