/* * driver.c: core driver methods for managing qemu guests * * Copyright (C) 2006, 2007 Red Hat, Inc. * Copyright (C) 2006 Daniel P. Berrange * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Author: Daniel P. Berrange */ #include #define _GNU_SOURCE /* for asprintf */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "event.h" #include "buf.h" #include "util.h" #include "qemu_driver.h" #include "qemu_conf.h" #include "nodeinfo.h" static int qemudShutdown(void); #define qemudLog(level, msg...) fprintf(stderr, msg) static int qemudSetCloseExec(int fd) { int flags; if ((flags = fcntl(fd, F_GETFD)) < 0) goto error; flags |= FD_CLOEXEC; if ((fcntl(fd, F_SETFD, flags)) < 0) goto error; return 0; error: qemudLog(QEMUD_ERR, "Failed to set close-on-exec file descriptor flag"); return -1; } static int qemudSetNonBlock(int fd) { int flags; if ((flags = fcntl(fd, F_GETFL)) < 0) goto error; flags |= O_NONBLOCK; if ((fcntl(fd, F_SETFL, flags)) < 0) goto error; return 0; error: qemudLog(QEMUD_ERR, "Failed to set non-blocking file descriptor flag"); return -1; } static void qemudDispatchVMEvent(int fd, int events, void *opaque); static int qemudStartVMDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm); static void qemudShutdownVMDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm); static int qemudStartNetworkDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_network *network); static int qemudShutdownNetworkDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_network *network); struct qemud_driver *qemu_driver = NULL; static void qemudAutostartConfigs(struct qemud_driver *driver) { struct qemud_network *network; struct qemud_vm *vm; network = driver->networks; while (network != NULL) { struct qemud_network *next = network->next; if (network->autostart && !qemudIsActiveNetwork(network) && qemudStartNetworkDaemon(NULL, driver, network) < 0) { virErrorPtr err = virGetLastError(); qemudLog(QEMUD_ERR, "Failed to autostart network '%s': %s", network->def->name, err->message); } network = next; } vm = driver->vms; while (vm != NULL) { struct qemud_vm *next = vm->next; if (vm->autostart && !qemudIsActiveVM(vm) && qemudStartVMDaemon(NULL, driver, vm) < 0) { virErrorPtr err = virGetLastError(); qemudLog(QEMUD_ERR, "Failed to autostart VM '%s': %s", vm->def->name, err->message); } vm = next; } } /** * qemudStartup: * * Initialization function for the QEmu daemon */ static int qemudStartup(void) { uid_t uid = geteuid(); struct passwd *pw; char *base = NULL; if (!(qemu_driver = calloc(1, sizeof(struct qemud_driver)))) { return -1; } /* Don't have a dom0 so start from 1 */ qemu_driver->nextvmid = 1; if (!uid) { if (snprintf(qemu_driver->logDir, PATH_MAX, "%s/log/libvirt/qemu", LOCAL_STATE_DIR) >= PATH_MAX) goto snprintf_error; if ((base = strdup (SYSCONF_DIR "/libvirt/qemu")) == NULL) goto out_of_memory; } else { if (!(pw = getpwuid(uid))) { qemudLog(QEMUD_ERR, "Failed to find user record for uid '%d': %s", uid, strerror(errno)); goto out_of_memory; } if (snprintf(qemu_driver->logDir, PATH_MAX, "%s/.libvirt/qemu/log", pw->pw_dir) >= PATH_MAX) goto snprintf_error; if (asprintf (&base, "%s/.libvirt/qemu", pw->pw_dir) == -1) { qemudLog (QEMUD_ERR, "out of memory in asprintf"); goto out_of_memory; } } /* Configuration paths are either ~/.libvirt/qemu/... (session) or * /etc/libvirt/qemu/... (system). */ if (asprintf (&qemu_driver->configDir, "%s", base) == -1) goto out_of_memory; if (asprintf (&qemu_driver->autostartDir, "%s/autostart", base) == -1) goto out_of_memory; if (asprintf (&qemu_driver->networkConfigDir, "%s/networks", base) == -1) goto out_of_memory; if (asprintf (&qemu_driver->networkAutostartDir, "%s/networks/autostart", base) == -1) goto out_of_memory; if (qemudScanConfigs(qemu_driver) < 0) qemudShutdown(); qemudAutostartConfigs(qemu_driver); free(base); return 0; snprintf_error: qemudLog(QEMUD_ERR, "Resulting path to long for buffer in qemudInitPaths()"); return -1; out_of_memory: qemudLog (QEMUD_ERR, "qemudStartup: out of memory"); if (base) free (base); free(qemu_driver); qemu_driver = NULL; return -1; } /** * qemudReload: * * Function to restart the QEmu daemon, it will recheck the configuration * files and update its state and the networking */ static int qemudReload(void) { qemudScanConfigs(qemu_driver); if (qemu_driver->iptables) { qemudLog(QEMUD_INFO, "Reloading iptables rules"); iptablesReloadRules(qemu_driver->iptables); } qemudAutostartConfigs(qemu_driver); return 0; } /** * qemudActive: * * Checks if the QEmu daemon is active, i.e. has an active domain or * an active network * * Returns 1 if active, 0 otherwise */ static int qemudActive(void) { /* If we've any active networks or guests, then we * mark this driver as active */ if (qemu_driver->nactivenetworks && qemu_driver->nactivevms) return 1; /* Otherwise we're happy to deal with a shutdown */ return 0; } /** * qemudShutdown: * * Shutdown the QEmu daemon, it will stop all active domains and networks */ static int qemudShutdown(void) { struct qemud_vm *vm; struct qemud_network *network; if (!qemu_driver) return -1; /* shutdown active VMs */ vm = qemu_driver->vms; while (vm) { struct qemud_vm *next = vm->next; if (qemudIsActiveVM(vm)) qemudShutdownVMDaemon(NULL, qemu_driver, vm); if (!vm->configFile[0]) qemudRemoveInactiveVM(qemu_driver, vm); vm = next; } /* free inactive VMs */ vm = qemu_driver->vms; while (vm) { struct qemud_vm *next = vm->next; qemudFreeVM(vm); vm = next; } qemu_driver->vms = NULL; qemu_driver->nactivevms = 0; qemu_driver->ninactivevms = 0; /* shutdown active networks */ network = qemu_driver->networks; while (network) { struct qemud_network *next = network->next; if (qemudIsActiveNetwork(network)) qemudShutdownNetworkDaemon(NULL, qemu_driver, network); network = next; } /* free inactive networks */ network = qemu_driver->networks; while (network) { struct qemud_network *next = network->next; qemudFreeNetwork(network); network = next; } qemu_driver->networks = NULL; qemu_driver->nactivenetworks = 0; qemu_driver->ninactivenetworks = 0; if (qemu_driver->configDir) free(qemu_driver->configDir); if (qemu_driver->autostartDir) free(qemu_driver->autostartDir); if (qemu_driver->networkConfigDir) free(qemu_driver->networkConfigDir); if (qemu_driver->networkAutostartDir) free(qemu_driver->networkAutostartDir); if (qemu_driver->brctl) brShutdown(qemu_driver->brctl); if (qemu_driver->iptables) iptablesContextFree(qemu_driver->iptables); free(qemu_driver); qemu_driver = NULL; return 0; } /* Return -1 for error, 1 to continue reading and 0 for success */ typedef int qemudHandlerMonitorOutput(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm, const char *output, int fd); static int qemudReadMonitorOutput(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm, int fd, char *buf, int buflen, qemudHandlerMonitorOutput func, const char *what) { #define MONITOR_TIMEOUT 3000 int got = 0; buf[0] = '\0'; /* Consume & discard the initial greeting */ while (got < (buflen-1)) { int ret; ret = read(fd, buf+got, buflen-got-1); if (ret == 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "QEMU quit during %s startup\n%s", what, buf); return -1; } if (ret < 0) { struct pollfd pfd = { .fd = fd, .events = POLLIN }; if (errno == EINTR) continue; if (errno != EAGAIN) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Failure while reading %s startup output: %s", what, strerror(errno)); return -1; } ret = poll(&pfd, 1, MONITOR_TIMEOUT); if (ret == 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Timed out while reading %s startup output", what); return -1; } else if (ret == -1) { if (errno != EINTR) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Failure while reading %s startup output: %s", what, strerror(errno)); return -1; } } else { /* Make sure we continue loop & read any further data available before dealing with EOF */ if (pfd.revents & (POLLIN | POLLHUP)) continue; qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Failure while reading %s startup output", what); return -1; } } else { got += ret; buf[got] = '\0'; if ((ret = func(conn, driver, vm, buf, fd)) != 1) return ret; } } qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Out of space while reading %s startup output", what); return -1; #undef MONITOR_TIMEOUT } static int qemudCheckMonitorPrompt(virConnectPtr conn ATTRIBUTE_UNUSED, struct qemud_driver *driver ATTRIBUTE_UNUSED, struct qemud_vm *vm, const char *output, int fd) { if (strstr(output, "(qemu) ") == NULL) return 1; /* keep reading */ vm->monitor = fd; return 0; } static int qemudOpenMonitor(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm, const char *monitor) { int monfd; char buf[1024]; int ret = -1; if (!(monfd = open(monitor, O_RDWR))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Unable to open monitor path %s", monitor); return -1; } if (qemudSetCloseExec(monfd) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Unable to set monitor close-on-exec flag"); goto error; } if (qemudSetNonBlock(monfd) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Unable to put monitor into non-blocking mode"); goto error; } ret = qemudReadMonitorOutput(conn, driver, vm, monfd, buf, sizeof(buf), qemudCheckMonitorPrompt, "monitor"); /* Keep monitor open upon success */ if (ret == 0) return ret; error: close(monfd); return ret; } static int qemudExtractMonitorPath(const char *haystack, char *path, int pathmax) { static const char needle[] = "char device redirected to"; char *tmp; if (!(tmp = strstr(haystack, needle))) return -1; strncpy(path, tmp+sizeof(needle), pathmax-1); path[pathmax-1] = '\0'; while (*path) { /* * The monitor path ends at first whitespace char * so lets search for it & NULL terminate it there */ if (isspace(*path)) { *path = '\0'; return 0; } path++; } /* * We found a path, but didn't find any whitespace, * so it must be still incomplete - we should at * least see a \n */ return -1; } static int qemudOpenMonitorPath(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm, const char *output, int fd ATTRIBUTE_UNUSED) { char monitor[PATH_MAX]; if (qemudExtractMonitorPath(output, monitor, sizeof(monitor)) < 0) return 1; /* keep reading */ return qemudOpenMonitor(conn, driver, vm, monitor); } static int qemudWaitForMonitor(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm) { char buf[1024]; /* Plenty of space to get startup greeting */ int ret = qemudReadMonitorOutput(conn, driver, vm, vm->stderr, buf, sizeof(buf), qemudOpenMonitorPath, "console"); buf[sizeof(buf)-1] = '\0'; retry: if (write(vm->logfile, buf, strlen(buf)) < 0) { /* Log, but ignore failures to write logfile for VM */ if (errno == EINTR) goto retry; qemudLog(QEMUD_WARN, "Unable to log VM console data: %s", strerror(errno)); } return ret; } static int qemudNextFreeVNCPort(struct qemud_driver *driver ATTRIBUTE_UNUSED) { int i; for (i = 5900 ; i < 6000 ; i++) { int fd; int reuse = 1; struct sockaddr_in addr; addr.sin_family = AF_INET; addr.sin_port = htons(i); addr.sin_addr.s_addr = htonl(INADDR_ANY); fd = socket(PF_INET, SOCK_STREAM, 0); if (fd < 0) return -1; if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*)&reuse, sizeof(reuse)) < 0) { close(fd); break; } if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) == 0) { /* Not in use, lets grab it */ close(fd); return i; } close(fd); if (errno == EADDRINUSE) { /* In use, try next */ continue; } /* Some other bad failure, get out.. */ break; } return -1; } static int qemudStartVMDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_vm *vm) { char **argv = NULL, **tmp; int i; char logfile[PATH_MAX]; if (qemudIsActiveVM(vm)) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "VM is already active"); return -1; } if (vm->def->vncPort < 0) { int port = qemudNextFreeVNCPort(driver); if (port < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Unable to find an unused VNC port"); return -1; } vm->def->vncActivePort = port; } else vm->def->vncActivePort = vm->def->vncPort; if ((strlen(driver->logDir) + /* path */ 1 + /* Separator */ strlen(vm->def->name) + /* basename */ 4 + /* suffix .log */ 1 /* NULL */) > PATH_MAX) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "config file path too long: %s/%s.log", driver->logDir, vm->def->name); return -1; } strcpy(logfile, driver->logDir); strcat(logfile, "/"); strcat(logfile, vm->def->name); strcat(logfile, ".log"); if (qemudEnsureDir(driver->logDir) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot create log directory %s: %s", driver->logDir, strerror(errno)); return -1; } if ((vm->logfile = open(logfile, O_CREAT | O_TRUNC | O_WRONLY, S_IRUSR | S_IWUSR)) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to create logfile %s: %s", logfile, strerror(errno)); return -1; } if (qemudSetCloseExec(vm->logfile) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "Unable to set VM logfile close-on-exec flag %s", strerror(errno)); close(vm->logfile); vm->logfile = -1; return -1; } if (qemudBuildCommandLine(conn, driver, vm, &argv) < 0) { close(vm->logfile); vm->logfile = -1; return -1; } tmp = argv; while (*tmp) { if (write(vm->logfile, *tmp, strlen(*tmp)) < 0) qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s", errno, strerror(errno)); if (write(vm->logfile, " ", 1) < 0) qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s", errno, strerror(errno)); tmp++; } if (write(vm->logfile, "\n", 1) < 0) qemudLog(QEMUD_WARN, "Unable to write argv to logfile %d: %s", errno, strerror(errno)); if (virExecNonBlock(conn, argv, &vm->pid, vm->stdin, &vm->stdout, &vm->stderr) == 0) { vm->id = driver->nextvmid++; vm->state = vm->migrateFrom[0] ? VIR_DOMAIN_PAUSED : VIR_DOMAIN_RUNNING; driver->ninactivevms--; driver->nactivevms++; } for (i = 0 ; argv[i] ; i++) free(argv[i]); free(argv); if (vm->tapfds) { for (i = 0; vm->tapfds[i] != -1; i++) { close(vm->tapfds[i]); vm->tapfds[i] = -1; } free(vm->tapfds); vm->tapfds = NULL; vm->ntapfds = 0; } if (virEventAddHandle(vm->stdout, POLLIN | POLLERR | POLLHUP, qemudDispatchVMEvent, driver) < 0) { qemudShutdownVMDaemon(conn, driver, vm); return -1; } if (virEventAddHandle(vm->stderr, POLLIN | POLLERR | POLLHUP, qemudDispatchVMEvent, driver) < 0) { qemudShutdownVMDaemon(conn, driver, vm); return -1; } if (qemudWaitForMonitor(conn, driver, vm) < 0) { qemudShutdownVMDaemon(conn, driver, vm); return -1; } return 0; } static int qemudVMData(struct qemud_driver *driver ATTRIBUTE_UNUSED, struct qemud_vm *vm, int fd) { char buf[4096]; if (vm->pid < 0) return 0; for (;;) { int ret = read(fd, buf, sizeof(buf)-1); if (ret < 0) { if (errno == EAGAIN) return 0; return -1; } if (ret == 0) { return 0; } buf[ret] = '\0'; retry: if (write(vm->logfile, buf, ret) < 0) { /* Log, but ignore failures to write logfile for VM */ if (errno == EINTR) goto retry; qemudLog(QEMUD_WARN, "Unable to log VM console data: %s", strerror(errno)); } } qemudAutostartConfigs(qemu_driver); } static void qemudShutdownVMDaemon(virConnectPtr conn ATTRIBUTE_UNUSED, struct qemud_driver *driver, struct qemud_vm *vm) { if (!qemudIsActiveVM(vm)) return; qemudLog(QEMUD_INFO, "Shutting down VM '%s'", vm->def->name); kill(vm->pid, SIGTERM); qemudVMData(driver, vm, vm->stdout); qemudVMData(driver, vm, vm->stderr); virEventRemoveHandle(vm->stdout); virEventRemoveHandle(vm->stderr); if (close(vm->logfile) < 0) qemudLog(QEMUD_WARN, "Unable to close logfile %d: %s", errno, strerror(errno)); close(vm->stdout); close(vm->stderr); if (vm->monitor != -1) close(vm->monitor); vm->logfile = -1; vm->stdout = -1; vm->stderr = -1; vm->monitor = -1; if (waitpid(vm->pid, NULL, WNOHANG) != vm->pid) { kill(vm->pid, SIGKILL); if (waitpid(vm->pid, NULL, 0) != vm->pid) { qemudLog(QEMUD_WARN, "Got unexpected pid, damn"); } } vm->pid = -1; vm->id = -1; vm->state = VIR_DOMAIN_SHUTOFF; if (vm->newDef) { qemudFreeVMDef(vm->def); vm->def = vm->newDef; vm->newDef = NULL; } driver->nactivevms--; driver->ninactivevms++; } static int qemudDispatchVMLog(struct qemud_driver *driver, struct qemud_vm *vm, int fd) { if (qemudVMData(driver, vm, fd) < 0) { qemudShutdownVMDaemon(NULL, driver, vm); if (!vm->configFile[0]) qemudRemoveInactiveVM(driver, vm); } return 0; } static int qemudDispatchVMFailure(struct qemud_driver *driver, struct qemud_vm *vm, int fd ATTRIBUTE_UNUSED) { qemudShutdownVMDaemon(NULL, driver, vm); if (!vm->configFile[0]) qemudRemoveInactiveVM(driver, vm); return 0; } static int qemudBuildDnsmasqArgv(virConnectPtr conn, struct qemud_network *network, char ***argv) { int i, len; char buf[PATH_MAX]; struct qemud_dhcp_range_def *range; len = 1 + /* dnsmasq */ 1 + /* --keep-in-foreground */ 1 + /* --strict-order */ 1 + /* --bind-interfaces */ 2 + /* --pid-file "" */ 2 + /* --conf-file "" */ /*2 + *//* --interface virbr0 */ 2 + /* --except-interface lo */ 2 + /* --listen-address 10.0.0.1 */ 1 + /* --dhcp-leasefile=path */ (2 * network->def->nranges) + /* --dhcp-range 10.0.0.2,10.0.0.254 */ 1; /* NULL */ if (!(*argv = calloc(len, sizeof(char *)))) goto no_memory; #define APPEND_ARG(v, n, s) do { \ if (!((v)[(n)] = strdup(s))) \ goto no_memory; \ } while (0) i = 0; APPEND_ARG(*argv, i++, "dnsmasq"); APPEND_ARG(*argv, i++, "--keep-in-foreground"); /* * Needed to ensure dnsmasq uses same algorithm for processing * multiple namedriver entries in /etc/resolv.conf as GLibC. */ APPEND_ARG(*argv, i++, "--strict-order"); APPEND_ARG(*argv, i++, "--bind-interfaces"); APPEND_ARG(*argv, i++, "--pid-file"); APPEND_ARG(*argv, i++, ""); APPEND_ARG(*argv, i++, "--conf-file"); APPEND_ARG(*argv, i++, ""); /* * XXX does not actually work, due to some kind of * race condition setting up ipv6 addresses on the * interface. A sleep(10) makes it work, but that's * clearly not practical * * APPEND_ARG(*argv, i++, "--interface"); * APPEND_ARG(*argv, i++, network->def->bridge); */ APPEND_ARG(*argv, i++, "--listen-address"); APPEND_ARG(*argv, i++, network->def->ipAddress); APPEND_ARG(*argv, i++, "--except-interface"); APPEND_ARG(*argv, i++, "lo"); /* * NB, dnsmasq command line arg bug means we need to * use a single arg '--dhcp-leasefile=path' rather than * two separate args in '--dhcp-leasefile path' style */ snprintf(buf, sizeof(buf), "--dhcp-leasefile=%s/lib/libvirt/dhcp-%s.leases", LOCAL_STATE_DIR, network->def->name); APPEND_ARG(*argv, i++, buf); range = network->def->ranges; while (range) { snprintf(buf, sizeof(buf), "%s,%s", range->start, range->end); APPEND_ARG(*argv, i++, "--dhcp-range"); APPEND_ARG(*argv, i++, buf); range = range->next; } #undef APPEND_ARG return 0; no_memory: if (argv) { for (i = 0; (*argv)[i]; i++) free((*argv)[i]); free(*argv); } qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "dnsmasq argv"); return -1; } static int dhcpStartDhcpDaemon(virConnectPtr conn, struct qemud_network *network) { char **argv; int ret, i; if (network->def->ipAddress[0] == '\0') { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot start dhcp daemon without IP address for server"); return -1; } argv = NULL; if (qemudBuildDnsmasqArgv(conn, network, &argv) < 0) return -1; ret = virExecNonBlock(conn, argv, &network->dnsmasqPid, -1, NULL, NULL); for (i = 0; argv[i]; i++) free(argv[i]); free(argv); return ret; } static int qemudAddIptablesRules(virConnectPtr conn, struct qemud_driver *driver, struct qemud_network *network) { int err; if (!driver->iptables && !(driver->iptables = iptablesContextNew())) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "iptables support"); return 1; } /* allow DHCP requests through to dnsmasq */ if ((err = iptablesAddTcpInput(driver->iptables, network->bridge, 67))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow DHCP requests from '%s' : %s\n", network->bridge, strerror(err)); goto err1; } if ((err = iptablesAddUdpInput(driver->iptables, network->bridge, 67))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow DHCP requests from '%s' : %s\n", network->bridge, strerror(err)); goto err2; } /* allow DNS requests through to dnsmasq */ if ((err = iptablesAddTcpInput(driver->iptables, network->bridge, 53))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow DNS requests from '%s' : %s\n", network->bridge, strerror(err)); goto err3; } if ((err = iptablesAddUdpInput(driver->iptables, network->bridge, 53))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow DNS requests from '%s' : %s\n", network->bridge, strerror(err)); goto err4; } /* Catch all rules to block forwarding to/from bridges */ if ((err = iptablesAddForwardRejectOut(driver->iptables, network->bridge))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to block outbound traffic from '%s' : %s\n", network->bridge, strerror(err)); goto err5; } if ((err = iptablesAddForwardRejectIn(driver->iptables, network->bridge))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to block inbound traffic to '%s' : %s\n", network->bridge, strerror(err)); goto err6; } /* Allow traffic between guests on the same bridge */ if ((err = iptablesAddForwardAllowCross(driver->iptables, network->bridge))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow cross bridge traffic on '%s' : %s\n", network->bridge, strerror(err)); goto err7; } /* The remaining rules are only needed for IP forwarding */ if (!network->def->forward) return 1; /* allow forwarding packets from the bridge interface */ if ((err = iptablesAddForwardAllowOut(driver->iptables, network->def->network, network->bridge, network->def->forwardDev))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow forwarding from '%s' : %s\n", network->bridge, strerror(err)); goto err8; } /* allow forwarding packets to the bridge interface if they are part of an existing connection */ if ((err = iptablesAddForwardAllowIn(driver->iptables, network->def->network, network->bridge, network->def->forwardDev))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to allow forwarding to '%s' : %s\n", network->bridge, strerror(err)); goto err9; } /* enable masquerading */ if ((err = iptablesAddForwardMasquerade(driver->iptables, network->def->network, network->def->forwardDev))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to add iptables rule to enable masquerading : %s\n", strerror(err)); goto err10; } return 1; err10: iptablesRemoveForwardAllowIn(driver->iptables, network->def->network, network->bridge, network->def->forwardDev); err9: iptablesRemoveForwardAllowOut(driver->iptables, network->def->network, network->bridge, network->def->forwardDev); err8: iptablesRemoveForwardAllowCross(driver->iptables, network->bridge); err7: iptablesRemoveForwardRejectIn(driver->iptables, network->bridge); err6: iptablesRemoveForwardRejectOut(driver->iptables, network->bridge); err5: iptablesRemoveUdpInput(driver->iptables, network->bridge, 53); err4: iptablesRemoveTcpInput(driver->iptables, network->bridge, 53); err3: iptablesRemoveUdpInput(driver->iptables, network->bridge, 67); err2: iptablesRemoveTcpInput(driver->iptables, network->bridge, 67); err1: return 0; } static void qemudRemoveIptablesRules(struct qemud_driver *driver, struct qemud_network *network) { if (network->def->forward) { iptablesRemoveForwardMasquerade(driver->iptables, network->def->network, network->def->forwardDev); iptablesRemoveForwardAllowIn(driver->iptables, network->def->network, network->bridge, network->def->forwardDev); iptablesRemoveForwardAllowOut(driver->iptables, network->def->network, network->bridge, network->def->forwardDev); } iptablesRemoveForwardAllowCross(driver->iptables, network->bridge); iptablesRemoveForwardRejectIn(driver->iptables, network->bridge); iptablesRemoveForwardRejectOut(driver->iptables, network->bridge); iptablesRemoveUdpInput(driver->iptables, network->bridge, 53); iptablesRemoveTcpInput(driver->iptables, network->bridge, 53); iptablesRemoveUdpInput(driver->iptables, network->bridge, 67); iptablesRemoveTcpInput(driver->iptables, network->bridge, 67); } static int qemudEnableIpForwarding(void) { #define PROC_IP_FORWARD "/proc/sys/net/ipv4/ip_forward" int fd, ret; if ((fd = open(PROC_IP_FORWARD, O_WRONLY|O_TRUNC)) == -1) return 0; if (write(fd, "1\n", 2) < 0) ret = 0; close (fd); return 1; #undef PROC_IP_FORWARD } static int qemudStartNetworkDaemon(virConnectPtr conn, struct qemud_driver *driver, struct qemud_network *network) { const char *name; int err; if (qemudIsActiveNetwork(network)) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "network is already active"); return -1; } if (!driver->brctl && (err = brInit(&driver->brctl))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot initialize bridge support: %s", strerror(err)); return -1; } if (network->def->bridge[0] == '\0' || strchr(network->def->bridge, '%')) { name = "vnet%d"; } else { name = network->def->bridge; } if ((err = brAddBridge(driver->brctl, name, network->bridge, sizeof(network->bridge)))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot create bridge '%s' : %s", name, strerror(err)); return -1; } if (network->def->forwardDelay && (err = brSetForwardDelay(driver->brctl, network->bridge, network->def->forwardDelay))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to set bridge forward delay to %d\n", network->def->forwardDelay); goto err_delbr; } if ((err = brSetForwardDelay(driver->brctl, network->bridge, network->def->disableSTP ? 0 : 1))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to set bridge STP to %s\n", network->def->disableSTP ? "off" : "on"); goto err_delbr; } if (network->def->ipAddress[0] && (err = brSetInetAddress(driver->brctl, network->bridge, network->def->ipAddress))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot set IP address on bridge '%s' to '%s' : %s\n", network->bridge, network->def->ipAddress, strerror(err)); goto err_delbr; } if (network->def->netmask[0] && (err = brSetInetNetmask(driver->brctl, network->bridge, network->def->netmask))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "cannot set netmask on bridge '%s' to '%s' : %s\n", network->bridge, network->def->netmask, strerror(err)); goto err_delbr; } if (network->def->ipAddress[0] && (err = brSetInterfaceUp(driver->brctl, network->bridge, 1))) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to bring the bridge '%s' up : %s\n", network->bridge, strerror(err)); goto err_delbr; } if (!qemudAddIptablesRules(conn, driver, network)) goto err_delbr1; if (network->def->forward && !qemudEnableIpForwarding()) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "failed to enable IP forwarding : %s\n", strerror(err)); goto err_delbr2; } if (network->def->ranges && dhcpStartDhcpDaemon(conn, network) < 0) goto err_delbr2; network->active = 1; driver->ninactivenetworks--; driver->nactivenetworks++; return 0; err_delbr2: qemudRemoveIptablesRules(driver, network); err_delbr1: if (network->def->ipAddress[0] && (err = brSetInterfaceUp(driver->brctl, network->bridge, 0))) { qemudLog(QEMUD_WARN, "Failed to bring down bridge '%s' : %s", network->bridge, strerror(err)); } err_delbr: if ((err = brDeleteBridge(driver->brctl, network->bridge))) { qemudLog(QEMUD_WARN, "Failed to delete bridge '%s' : %s\n", network->bridge, strerror(err)); } return -1; } static int qemudShutdownNetworkDaemon(virConnectPtr conn ATTRIBUTE_UNUSED, struct qemud_driver *driver, struct qemud_network *network) { int err; qemudLog(QEMUD_INFO, "Shutting down network '%s'", network->def->name); if (!qemudIsActiveNetwork(network)) return 0; if (network->dnsmasqPid > 0) kill(network->dnsmasqPid, SIGTERM); qemudRemoveIptablesRules(driver, network); if (network->def->ipAddress[0] && (err = brSetInterfaceUp(driver->brctl, network->bridge, 0))) { qemudLog(QEMUD_WARN, "Failed to bring down bridge '%s' : %s\n", network->bridge, strerror(err)); } if ((err = brDeleteBridge(driver->brctl, network->bridge))) { qemudLog(QEMUD_WARN, "Failed to delete bridge '%s' : %s\n", network->bridge, strerror(err)); } if (network->dnsmasqPid > 0 && waitpid(network->dnsmasqPid, NULL, WNOHANG) != network->dnsmasqPid) { kill(network->dnsmasqPid, SIGKILL); if (waitpid(network->dnsmasqPid, NULL, 0) != network->dnsmasqPid) qemudLog(QEMUD_WARN, "Got unexpected pid for dnsmasq\n"); } network->bridge[0] = '\0'; network->dnsmasqPid = -1; network->active = 0; if (network->newDef) { qemudFreeNetworkDef(network->def); network->def = network->newDef; network->newDef = NULL; } driver->nactivenetworks--; driver->ninactivenetworks++; if (!network->configFile[0]) qemudRemoveInactiveNetwork(driver, network); return 0; } static void qemudDispatchVMEvent(int fd, int events, void *opaque) { struct qemud_driver *driver = (struct qemud_driver *)opaque; struct qemud_vm *vm = driver->vms; while (vm) { if (qemudIsActiveVM(vm) && (vm->stdout == fd || vm->stderr == fd)) break; vm = vm->next; } if (!vm) return; if (events == POLLIN) qemudDispatchVMLog(driver, vm, fd); else qemudDispatchVMFailure(driver, vm, fd); } static int qemudMonitorCommand(struct qemud_driver *driver ATTRIBUTE_UNUSED, struct qemud_vm *vm, const char *cmd, char **reply) { int size = 0; char *buf = NULL; if (write(vm->monitor, cmd, strlen(cmd)) < 0) { return -1; } *reply = NULL; for (;;) { struct pollfd fd = { vm->monitor, POLLIN | POLLERR | POLLHUP, 0 }; char *tmp; /* Read all the data QEMU has sent thus far */ for (;;) { char data[1024]; int got = read(vm->monitor, data, sizeof(data)); char *b; if (got == 0) { if (buf) free(buf); return -1; } if (got < 0) { if (errno == EINTR) continue; if (errno == EAGAIN) break; if (buf) free(buf); return -1; } if (!(b = realloc(buf, size+got+1))) { free(buf); return -1; } buf = b; memmove(buf+size, data, got); buf[size+got] = '\0'; size += got; } if (buf) qemudDebug("Mon [%s]", buf); /* Look for QEMU prompt to indicate completion */ if (buf && ((tmp = strstr(buf, "\n(qemu) ")) != NULL)) { tmp[0] = '\0'; break; } pollagain: /* Need to wait for more data */ if (poll(&fd, 1, -1) < 0) { if (errno == EINTR) goto pollagain; free(buf); return -1; } } *reply = buf; return 0; } static virDrvOpenStatus qemudOpen(virConnectPtr conn, const char *name, int flags ATTRIBUTE_UNUSED) { uid_t uid = getuid(); if (qemu_driver == NULL) return VIR_DRV_OPEN_DECLINED; if (uid) { if (strcmp(name, "qemu:///session")) return VIR_DRV_OPEN_DECLINED; } else { if (strcmp(name, "qemu:///system") && strcmp(name, "qemu:///session")) return VIR_DRV_OPEN_DECLINED; } conn->privateData = qemu_driver; return VIR_DRV_OPEN_SUCCESS; } static int qemudClose(virConnectPtr conn) { /*struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;*/ conn->privateData = NULL; return 0; } static const char *qemudGetType(virConnectPtr conn ATTRIBUTE_UNUSED) { return "QEMU"; } static int qemudGetMaxVCPUs(virConnectPtr conn ATTRIBUTE_UNUSED, const char *type) { if (!type) return 16; if (!strcmp(type, "qemu")) return 16; /* XXX future KVM will support SMP. Need to probe kernel to figure out KVM module version i guess */ if (!strcmp(type, "kvm")) return 1; if (!strcmp(type, "kqemu")) return 1; return -1; } static int qemudGetNodeInfo(virConnectPtr conn, virNodeInfoPtr nodeinfo) { return virNodeInfoPopulate(conn, nodeinfo); } static int qemudGetFeatures(virBufferPtr xml, const struct qemu_feature_flags *flags) { int i, r; if (flags == NULL) return 0; r = virBufferAdd(xml, "\ \n", -1); if (r == -1) return r; for (i = 0; flags[i].name; ++i) { if (STREQ(flags[i].name, "pae")) { int pae = flags[i].default_on || flags[i].toggle; int nonpae = flags[i].toggle; if (pae) { r = virBufferAdd(xml, " \n", -1); if (r == -1) return r; } if (nonpae) { r = virBufferAdd(xml, " \n", -1); if (r == -1) return r; } } else { r = virBufferVSprintf(xml, " <%s default='%s' toggle='%s'/>\n", flags[i].name, flags[i].default_on ? "on" : "off", flags[i].toggle ? "yes" : "no"); if (r == -1) return r; } } r = virBufferAdd(xml, " \n", -1); return r; } static char *qemudGetCapabilities(virConnectPtr conn ATTRIBUTE_UNUSED) { struct utsname utsname; int i, j, r; int have_kqemu = 0; int have_kvm = 0; virBufferPtr xml; /* Really, this never fails - look at the man-page. */ uname (&utsname); have_kqemu = access ("/dev/kqemu", F_OK) == 0; have_kvm = access ("/dev/kvm", F_OK) == 0; /* Construct the XML. */ xml = virBufferNew (1024); if (!xml) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL); return NULL; } r = virBufferVSprintf (xml, "\ \n\ \n\ \n\ %s\n\ \n\ \n", utsname.machine); if (r == -1) { vir_buffer_failed: virBufferFree (xml); qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL); return NULL; } i = -1; if (strcmp (utsname.machine, "i686") == 0) i = 0; else if (strcmp (utsname.machine, "x86_64") == 0) i = 1; if (i >= 0) { /* For the default (PC-like) guest, qemudArchs[0] or [1]. */ r = virBufferVSprintf (xml, "\ \n\ \n\ hvm\n\ \n\ %d\n\ /usr/bin/%s\n\ \n", qemudArchs[i].arch, qemudArchs[i].wordsize, qemudArchs[i].binary); if (r == -1) goto vir_buffer_failed; for (j = 0; qemudArchs[i].machines[j]; ++j) { r = virBufferVSprintf (xml, "\ %s\n", qemudArchs[i].machines[j]); if (r == -1) goto vir_buffer_failed; } if (have_kqemu) { r = virBufferAdd (xml, "\ \n", -1); if (r == -1) goto vir_buffer_failed; } if (have_kvm) { r = virBufferAdd (xml, "\ \n\ /usr/bin/qemu-kvm\n\ \n", -1); if (r == -1) goto vir_buffer_failed; } r = virBufferAdd (xml, " \n", -1); if (r == -1) goto vir_buffer_failed; r = qemudGetFeatures(xml, qemudArchs[i].fflags); if (r == -1) goto vir_buffer_failed; r = virBufferAdd (xml, " \n", -1); if (r == -1) goto vir_buffer_failed; /* The "other" PC architecture needs emulation. */ i = i ^ 1; r = virBufferVSprintf (xml, "\ \n\ \n\ hvm\n\ \n\ %d\n\ /usr/bin/%s\n\ \n", qemudArchs[i].arch, qemudArchs[i].wordsize, qemudArchs[i].binary); if (r == -1) goto vir_buffer_failed; for (j = 0; qemudArchs[i].machines[j]; ++j) { r = virBufferVSprintf (xml, "\ %s\n", qemudArchs[i].machines[j]); if (r == -1) goto vir_buffer_failed; } r = virBufferAdd (xml, " \n \n", -1); if (r == -1) goto vir_buffer_failed; } /* The non-PC architectures, qemudArchs[>=2]. */ for (i = 2; qemudArchs[i].arch; ++i) { r = virBufferVSprintf (xml, "\ \n\ \n\ hvm\n\ \n\ %d\n\ /usr/bin/%s\n\ \n", qemudArchs[i].arch, qemudArchs[i].wordsize, qemudArchs[i].binary); if (r == -1) goto vir_buffer_failed; for (j = 0; qemudArchs[i].machines[j]; ++j) { r = virBufferVSprintf (xml, "\ %s\n", qemudArchs[i].machines[j]); if (r == -1) goto vir_buffer_failed; } r = virBufferAdd (xml, " \n", -1); if (r == -1) goto vir_buffer_failed; r = qemudGetFeatures(xml, qemudArchs[i].fflags); if (r == -1) goto vir_buffer_failed; r = virBufferAdd (xml, " \n", -1); if (r == -1) goto vir_buffer_failed; } /* Finish off. */ r = virBufferAdd (xml, "\ \n", -1); if (r == -1) goto vir_buffer_failed; return virBufferContentAndFree(xml); } static int qemudGetProcessInfo(unsigned long long *cpuTime, int pid) { char proc[PATH_MAX]; FILE *pidinfo; unsigned long long usertime, systime; if (snprintf(proc, sizeof(proc), "/proc/%d/stat", pid) >= (int)sizeof(proc)) { return -1; } if (!(pidinfo = fopen(proc, "r"))) { /*printf("cannnot read pid info");*/ /* VM probably shut down, so fake 0 */ *cpuTime = 0; return 0; } if (fscanf(pidinfo, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %llu %llu", &usertime, &systime) != 2) { qemudDebug("not enough arg"); return -1; } /* We got jiffies * We want nanoseconds * _SC_CLK_TCK is jiffies per second * So calulate thus.... */ *cpuTime = 1000ull * 1000ull * 1000ull * (usertime + systime) / (unsigned long long)sysconf(_SC_CLK_TCK); qemudDebug("Got %llu %llu %llu", usertime, systime, *cpuTime); fclose(pidinfo); return 0; } static virDomainPtr qemudDomainLookupByID(virConnectPtr conn, int id) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm *vm = qemudFindVMByID(driver, id); virDomainPtr dom; if (!vm) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); return NULL; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) dom->id = vm->id; return dom; } static virDomainPtr qemudDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, uuid); virDomainPtr dom; if (!vm) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); return NULL; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) dom->id = vm->id; return dom; } static virDomainPtr qemudDomainLookupByName(virConnectPtr conn, const char *name) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm *vm = qemudFindVMByName(driver, name); virDomainPtr dom; if (!vm) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); return NULL; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) dom->id = vm->id; return dom; } static int qemudGetVersion(virConnectPtr conn, unsigned long *version) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; if (qemudExtractVersion(conn, driver) < 0) return -1; *version = qemu_driver->qemuVersion; return 0; } static int qemudListDomains(virConnectPtr conn, int *ids, int nids) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm *vm = driver->vms; int got = 0; while (vm && got < nids) { if (qemudIsActiveVM(vm)) { ids[got] = vm->id; got++; } vm = vm->next; } return got; } static int qemudNumDomains(virConnectPtr conn) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; return driver->nactivevms; } static virDomainPtr qemudDomainCreate(virConnectPtr conn, const char *xml, unsigned int flags ATTRIBUTE_UNUSED) { struct qemud_vm_def *def; struct qemud_vm *vm; virDomainPtr dom; struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; if (!(def = qemudParseVMDef(conn, driver, xml, NULL))) return NULL; if (!(vm = qemudAssignVMDef(conn, driver, def))) { qemudFreeVMDef(def); return NULL; } if (qemudStartVMDaemon(conn, driver, vm) < 0) { qemudRemoveInactiveVM(driver, vm); return NULL; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) dom->id = vm->id; return dom; } static int qemudDomainSuspend(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; char *info; struct qemud_vm *vm = qemudFindVMByID(driver, dom->id); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); return -1; } if (!qemudIsActiveVM(vm)) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running"); return -1; } if (vm->state == VIR_DOMAIN_PAUSED) return 0; if (qemudMonitorCommand(driver, vm, "stop\r", &info) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "suspend operation failed"); return -1; } vm->state = VIR_DOMAIN_PAUSED; qemudDebug("Reply %s", info); free(info); return 0; } static int qemudDomainResume(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; char *info; struct qemud_vm *vm = qemudFindVMByID(driver, dom->id); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); return -1; } if (!qemudIsActiveVM(vm)) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running"); return -1; } if (vm->state == VIR_DOMAIN_RUNNING) return 0; if (qemudMonitorCommand(driver, vm, "cont\r", &info) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "resume operation failed"); return -1; } vm->state = VIR_DOMAIN_RUNNING; qemudDebug("Reply %s", info); free(info); return 0; } static int qemudDomainDestroy(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByID(driver, dom->id); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); return -1; } qemudShutdownVMDaemon(dom->conn, driver, vm); if (!vm->configFile[0]) qemudRemoveInactiveVM(driver, vm); virFreeDomain(dom->conn, dom); return 0; } static char *qemudDomainGetOSType(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); char *type; if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return NULL; } if (!(type = strdup(vm->def->os.type))) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_MEMORY, "ostype"); return NULL; } return type; } static int qemudDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return -1; } info->state = vm->state; if (!qemudIsActiveVM(vm)) { info->cpuTime = 0; } else { if (qemudGetProcessInfo(&(info->cpuTime), vm->pid) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "cannot read cputime for domain"); return -1; } } info->maxMem = vm->def->maxmem; info->memory = vm->def->memory; info->nrVirtCpu = vm->def->vcpus; return 0; } static char *qemudEscapeShellArg(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, \", \\ To pass through both QEMU + the shell, we need to escape the single character ' as the five characters '\\'' */ for (i = 0; in[i] != '\0'; i++) { switch(in[i]) { case '\r': case '\n': case '"': case '\\': len += 2; break; case '\'': len += 5; break; default: len += 1; break; } } if ((out = (char *)malloc(len + 1)) == NULL) 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; case '\'': out[j++] = '\''; out[j++] = '\\'; out[j++] = '\\'; out[j++] = '\''; out[j++] = '\''; break; default: out[j++] = in[i]; break; } } out[j] = '\0'; return out; } #define QEMUD_SAVE_MAGIC "LibvirtQemudSave" #define QEMUD_SAVE_VERSION 1 struct qemud_save_header { char magic[sizeof(QEMUD_SAVE_MAGIC)-1]; int version; int xml_len; int was_running; int unused[16]; }; static int qemudDomainSave(virDomainPtr dom, const char *path) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByID(driver, dom->id); char *command, *info; int fd; char *safe_path; char *xml; struct qemud_save_header header; memset(&header, 0, sizeof(header)); memcpy(header.magic, QEMUD_SAVE_MAGIC, sizeof(header.magic)); header.version = QEMUD_SAVE_VERSION; if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); return -1; } if (!qemudIsActiveVM(vm)) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "domain is not running"); return -1; } /* Pause */ if (vm->state == VIR_DOMAIN_RUNNING) { header.was_running = 1; if (qemudDomainSuspend(dom) != 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "failed to pause domain"); return -1; } } /* Get XML for the domain */ xml = qemudGenerateXML(dom->conn, driver, vm, vm->def, 0); if (!xml) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "failed to get domain xml"); return -1; } header.xml_len = strlen(xml) + 1; /* Write header to file, followed by XML */ if ((fd = open(path, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR)) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "failed to create '%s'", path); free(xml); return -1; } if (safewrite(fd, &header, sizeof(header)) != sizeof(header)) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "failed to write save header"); close(fd); free(xml); return -1; } if (safewrite(fd, xml, header.xml_len) != header.xml_len) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "failed to write xml"); close(fd); free(xml); return -1; } close(fd); free(xml); /* Migrate to file */ safe_path = qemudEscapeShellArg(path); if (!safe_path) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "out of memory"); return -1; } if (asprintf (&command, "migrate \"exec:" "dd of='%s' oflag=append conv=notrunc 2>/dev/null" "\"\r", safe_path) == -1) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "out of memory"); free(safe_path); return -1; } free(safe_path); if (qemudMonitorCommand(driver, vm, command, &info) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "migrate operation failed"); free(command); return -1; } free(info); free(command); /* Shut it down */ qemudShutdownVMDaemon(dom->conn, driver, vm); if (!vm->configFile[0]) qemudRemoveInactiveVM(driver, vm); return 0; } static int qemudDomainRestore(virConnectPtr conn, const char *path) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm_def *def; struct qemud_vm *vm; int fd; char *xml; struct qemud_save_header header; /* Verify the header and read the XML */ if ((fd = open(path, O_RDONLY)) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "cannot read domain image"); return -1; } if (saferead(fd, &header, sizeof(header)) != sizeof(header)) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to read qemu header"); close(fd); return -1; } if (memcmp(header.magic, QEMUD_SAVE_MAGIC, sizeof(header.magic)) != 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "image magic is incorrect"); close(fd); return -1; } if (header.version > QEMUD_SAVE_VERSION) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "image version is not supported (%d > %d)", header.version, QEMUD_SAVE_VERSION); close(fd); return -1; } if ((xml = (char *)malloc(header.xml_len)) == NULL) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "out of memory"); close(fd); return -1; } if (saferead(fd, xml, header.xml_len) != header.xml_len) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to read XML"); close(fd); free(xml); return -1; } /* Create a domain from this XML */ if (!(def = qemudParseVMDef(conn, driver, xml, NULL))) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to parse XML"); close(fd); free(xml); return -1; } free(xml); /* Ensure the name and UUID don't already exist in an active VM */ vm = qemudFindVMByUUID(driver, def->uuid); if (!vm) vm = qemudFindVMByName(driver, def->name); if (vm && qemudIsActiveVM(vm)) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "domain is already active as '%s'", vm->def->name); close(fd); return -1; } if (!(vm = qemudAssignVMDef(conn, driver, def))) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to assign new VM"); qemudFreeVMDef(def); close(fd); return -1; } /* Set the migration source and start it up. */ snprintf(vm->migrateFrom, sizeof(vm->migrateFrom), "stdio"); vm->stdin = fd; if (qemudStartVMDaemon(conn, driver, vm) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to start VM"); if (!vm->configFile[0]) qemudRemoveInactiveVM(driver, vm); close(fd); return -1; } close(fd); vm->migrateFrom[0] = '\0'; vm->stdin = -1; /* If it was running before, resume it now. */ if (header.was_running) { char *info; if (qemudMonitorCommand(driver, vm, "cont\r", &info) < 0) { qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED, "failed to resume domain"); return -1; } free(info); vm->state = VIR_DOMAIN_RUNNING; } return 0; } static char *qemudDomainDumpXML(virDomainPtr dom, int flags ATTRIBUTE_UNUSED) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return NULL; } return qemudGenerateXML(dom->conn, driver, vm, vm->def, 1); } static int qemudListDefinedDomains(virConnectPtr conn, char **const names, int nnames) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm *vm = driver->vms; int got = 0, i; while (vm && got < nnames) { if (!qemudIsActiveVM(vm)) { if (!(names[got] = strdup(vm->def->name))) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names"); goto cleanup; } got++; } vm = vm->next; } return got; cleanup: for (i = 0 ; i < got ; i++) free(names[i]); return -1; } static int qemudNumDefinedDomains(virConnectPtr conn) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; return driver->ninactivevms; } static int qemudDomainStart(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return -1; } return qemudStartVMDaemon(dom->conn, driver, vm); } static virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) { struct qemud_driver *driver = (struct qemud_driver *)conn->privateData; struct qemud_vm_def *def; struct qemud_vm *vm; virDomainPtr dom; if (!(def = qemudParseVMDef(conn, driver, xml, NULL))) return NULL; if (!(vm = qemudAssignVMDef(conn, driver, def))) { qemudFreeVMDef(def); return NULL; } if (qemudSaveVMDef(conn, driver, vm, def) < 0) { qemudRemoveInactiveVM(driver, vm); return NULL; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) dom->id = vm->id; return dom; } static int qemudDomainUndefine(virDomainPtr dom) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return -1; } if (qemudIsActiveVM(vm)) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "cannot delete active domain"); return -1; } if (qemudDeleteConfig(dom->conn, driver, vm->configFile, vm->def->name) < 0) return -1; if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s", vm->autostartLink, strerror(errno)); vm->configFile[0] = '\0'; vm->autostartLink[0] = '\0'; qemudRemoveInactiveVM(driver, vm); return 0; } static int qemudDomainGetAutostart(virDomainPtr dom, int *autostart) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return -1; } *autostart = vm->autostart; return 0; } static int qemudDomainSetAutostart(virDomainPtr dom, int autostart) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid); if (!vm) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); return -1; } autostart = (autostart != 0); if (vm->autostart == autostart) return 0; if (autostart) { int err; if ((err = qemudEnsureDir(driver->autostartDir))) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "cannot create autostart directory %s: %s", driver->autostartDir, strerror(err)); return -1; } if (symlink(vm->configFile, vm->autostartLink) < 0) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "Failed to create symlink '%s' to '%s': %s", vm->autostartLink, vm->configFile, strerror(errno)); return -1; } } else { if (unlink(vm->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "Failed to delete symlink '%s': %s", vm->autostartLink, strerror(errno)); return -1; } } vm->autostart = autostart; return 0; } static virNetworkPtr qemudNetworkLookupByUUID(virConnectPtr conn ATTRIBUTE_UNUSED, const unsigned char *uuid) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, uuid); virNetworkPtr net; if (!network) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_NETWORK, "no network with matching uuid"); return NULL; } net = virGetNetwork(conn, network->def->name, network->def->uuid); return net; } static virNetworkPtr qemudNetworkLookupByName(virConnectPtr conn ATTRIBUTE_UNUSED, const char *name) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByName(driver, name); virNetworkPtr net; if (!network) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_NETWORK, "no network with matching name"); return NULL; } net = virGetNetwork(conn, network->def->name, network->def->uuid); return net; } static virDrvOpenStatus qemudOpenNetwork(virConnectPtr conn, const char *name ATTRIBUTE_UNUSED, int flags ATTRIBUTE_UNUSED) { if (!qemu_driver) return VIR_DRV_OPEN_DECLINED; conn->networkPrivateData = qemu_driver; return VIR_DRV_OPEN_SUCCESS; } static int qemudCloseNetwork(virConnectPtr conn) { conn->networkPrivateData = NULL; return 0; } static int qemudNumNetworks(virConnectPtr conn) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; return driver->nactivenetworks; } static int qemudListNetworks(virConnectPtr conn, char **const names, int nnames) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network *network = driver->networks; int got = 0, i; while (network && got < nnames) { if (qemudIsActiveNetwork(network)) { if (!(names[got] = strdup(network->def->name))) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names"); goto cleanup; } got++; } network = network->next; } return got; cleanup: for (i = 0 ; i < got ; i++) free(names[i]); return -1; } static int qemudNumDefinedNetworks(virConnectPtr conn) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; return driver->ninactivenetworks; } static int qemudListDefinedNetworks(virConnectPtr conn, char **const names, int nnames) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network *network = driver->networks; int got = 0, i; while (network && got < nnames) { if (!qemudIsActiveNetwork(network)) { if (!(names[got] = strdup(network->def->name))) { qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, "names"); goto cleanup; } got++; } network = network->next; } return got; cleanup: for (i = 0 ; i < got ; i++) free(names[i]); return -1; } static virNetworkPtr qemudNetworkCreate(virConnectPtr conn, const char *xml) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network_def *def; struct qemud_network *network; virNetworkPtr net; if (!(def = qemudParseNetworkDef(conn, driver, xml, NULL))) return NULL; if (!(network = qemudAssignNetworkDef(conn, driver, def))) { qemudFreeNetworkDef(def); return NULL; } if (qemudStartNetworkDaemon(conn, driver, network) < 0) { qemudRemoveInactiveNetwork(driver, network); return NULL; } net = virGetNetwork(conn, network->def->name, network->def->uuid); return net; } static virNetworkPtr qemudNetworkDefine(virConnectPtr conn, const char *xml) { struct qemud_driver *driver = (struct qemud_driver *)conn->networkPrivateData; struct qemud_network_def *def; struct qemud_network *network; virNetworkPtr net; if (!(def = qemudParseNetworkDef(conn, driver, xml, NULL))) return NULL; if (!(network = qemudAssignNetworkDef(conn, driver, def))) { qemudFreeNetworkDef(def); return NULL; } if (qemudSaveNetworkDef(conn, driver, network, def) < 0) { qemudRemoveInactiveNetwork(driver, network); return NULL; } net = virGetNetwork(conn, network->def->name, network->def->uuid); return net; } static int qemudNetworkUndefine(virNetworkPtr net) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_DOMAIN, "no network with matching uuid"); return -1; } if (qemudDeleteConfig(net->conn, driver, network->configFile, network->def->name) < 0) return -1; if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) qemudLog(QEMUD_WARN, "Failed to delete autostart link '%s': %s", network->autostartLink, strerror(errno)); network->configFile[0] = '\0'; network->autostartLink[0] = '\0'; qemudRemoveInactiveNetwork(driver, network); return 0; } static int qemudNetworkStart(virNetworkPtr net) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid"); return -1; } return qemudStartNetworkDaemon(net->conn, driver, network); } static int qemudNetworkDestroy(virNetworkPtr net) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); int ret; if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid"); return -1; } ret = qemudShutdownNetworkDaemon(net->conn, driver, network); virFreeNetwork(net->conn, net); return ret; } static char *qemudNetworkDumpXML(virNetworkPtr net, int flags ATTRIBUTE_UNUSED) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid"); return NULL; } return qemudGenerateNetworkXML(net->conn, driver, network, network->def); } static char *qemudNetworkGetBridgeName(virNetworkPtr net) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); char *bridge; if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching id"); return NULL; } bridge = strdup(network->bridge); if (!bridge) { qemudReportError(net->conn, NULL, net, VIR_ERR_NO_MEMORY, "bridge"); return NULL; } return bridge; } static int qemudNetworkGetAutostart(virNetworkPtr net, int *autostart) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid"); return -1; } *autostart = network->autostart; return 0; } static int qemudNetworkSetAutostart(virNetworkPtr net, int autostart) { struct qemud_driver *driver = (struct qemud_driver *)net->conn->networkPrivateData; struct qemud_network *network = qemudFindNetworkByUUID(driver, net->uuid); if (!network) { qemudReportError(net->conn, NULL, net, VIR_ERR_INVALID_NETWORK, "no network with matching uuid"); return -1; } autostart = (autostart != 0); if (network->autostart == autostart) return 0; if (autostart) { int err; if ((err = qemudEnsureDir(driver->networkAutostartDir))) { qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR, "cannot create autostart directory %s: %s", driver->networkAutostartDir, strerror(err)); return -1; } if (symlink(network->configFile, network->autostartLink) < 0) { qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR, "Failed to create symlink '%s' to '%s': %s", network->autostartLink, network->configFile, strerror(errno)); return -1; } } else { if (unlink(network->autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) { qemudReportError(net->conn, NULL, net, VIR_ERR_INTERNAL_ERROR, "Failed to delete symlink '%s': %s", network->autostartLink, strerror(errno)); return -1; } } network->autostart = autostart; return 0; } static virDriver qemuDriver = { VIR_DRV_QEMU, "QEMU", LIBVIR_VERSION_NUMBER, qemudOpen, /* open */ qemudClose, /* close */ NULL, /* supports_feature */ qemudGetType, /* type */ qemudGetVersion, /* version */ NULL, /* hostname */ NULL, /* uri */ qemudGetMaxVCPUs, /* getMaxVcpus */ qemudGetNodeInfo, /* nodeGetInfo */ qemudGetCapabilities, /* getCapabilities */ qemudListDomains, /* listDomains */ qemudNumDomains, /* numOfDomains */ qemudDomainCreate, /* domainCreateLinux */ qemudDomainLookupByID, /* domainLookupByID */ qemudDomainLookupByUUID, /* domainLookupByUUID */ qemudDomainLookupByName, /* domainLookupByName */ qemudDomainSuspend, /* domainSuspend */ qemudDomainResume, /* domainResume */ qemudDomainDestroy, /* domainShutdown */ NULL, /* domainReboot */ qemudDomainDestroy, /* domainDestroy */ qemudDomainGetOSType, /* domainGetOSType */ NULL, /* domainGetMaxMemory */ NULL, /* domainSetMaxMemory */ NULL, /* domainSetMemory */ qemudDomainGetInfo, /* domainGetInfo */ qemudDomainSave, /* domainSave */ qemudDomainRestore, /* domainRestore */ NULL, /* domainCoreDump */ NULL, /* domainSetVcpus */ NULL, /* domainPinVcpu */ NULL, /* domainGetVcpus */ NULL, /* domainGetMaxVcpus */ qemudDomainDumpXML, /* domainDumpXML */ qemudListDefinedDomains, /* listDomains */ qemudNumDefinedDomains, /* numOfDomains */ qemudDomainStart, /* domainCreate */ qemudDomainDefine, /* domainDefineXML */ qemudDomainUndefine, /* domainUndefine */ NULL, /* domainAttachDevice */ NULL, /* domainDetachDevice */ qemudDomainGetAutostart, /* domainGetAutostart */ qemudDomainSetAutostart, /* domainSetAutostart */ NULL, /* domainGetSchedulerType */ NULL, /* domainGetSchedulerParameters */ NULL, /* domainSetSchedulerParameters */ NULL, /* domainMigratePrepare */ NULL, /* domainMigratePerform */ NULL, /* domainMigrateFinish */ NULL, /* domainBlockStats */ NULL, /* domainInterfaceStats */ }; static virNetworkDriver qemuNetworkDriver = { "QEMU", qemudOpenNetwork, /* open */ qemudCloseNetwork, /* close */ qemudNumNetworks, /* numOfNetworks */ qemudListNetworks, /* listNetworks */ qemudNumDefinedNetworks, /* numOfDefinedNetworks */ qemudListDefinedNetworks, /* listDefinedNetworks */ qemudNetworkLookupByUUID, /* networkLookupByUUID */ qemudNetworkLookupByName, /* networkLookupByName */ qemudNetworkCreate, /* networkCreateXML */ qemudNetworkDefine, /* networkDefineXML */ qemudNetworkUndefine, /* networkUndefine */ qemudNetworkStart, /* networkCreate */ qemudNetworkDestroy, /* networkDestroy */ qemudNetworkDumpXML, /* networkDumpXML */ qemudNetworkGetBridgeName, /* networkGetBridgeName */ qemudNetworkGetAutostart, /* networkGetAutostart */ qemudNetworkSetAutostart, /* networkSetAutostart */ }; static virStateDriver qemuStateDriver = { qemudStartup, qemudShutdown, qemudReload, qemudActive, }; int qemudRegister(void) { virRegisterDriver(&qemuDriver); virRegisterNetworkDriver(&qemuNetworkDriver); virRegisterStateDriver(&qemuStateDriver); return 0; } /* * Local variables: * indent-tabs-mode: nil * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 * End: */