/* * xm_internal.h: helper routines for dealing with inactive domains * * Copyright (C) 2006-2007, 2009-2011 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 #include #include #include #include #include #include #include #include #include #include "virterror_internal.h" #include "datatypes.h" #include "xm_internal.h" #include "xen_driver.h" #include "xend_internal.h" #include "hash.h" #include "buf.h" #include "uuid.h" #include "util.h" #include "memory.h" #include "logging.h" #include "count-one-bits.h" #define VIR_FROM_THIS VIR_FROM_XENXM #ifdef WITH_RHEL5_API # define XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU 0 # define XEND_CONFIG_MIN_VERS_PVFB_NEWCONF 2 #else # define XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU 3 # define XEND_CONFIG_MIN_VERS_PVFB_NEWCONF 3 #endif /* The true Xen limit varies but so far is always way less than 1024, which is the Linux kernel limit according to sched.h, so we'll match that for now */ #define XEN_MAX_PHYSICAL_CPU 1024 static int xenXMConfigSetString(virConfPtr conf, const char *setting, const char *str); char * xenXMAutoAssignMac(void); static int xenXMDomainAttachDeviceFlags(virDomainPtr domain, const char *xml, unsigned int flags); static int xenXMDomainDetachDeviceFlags(virDomainPtr domain, const char *xml, unsigned int flags); #define XM_REFRESH_INTERVAL 10 #define XM_CONFIG_DIR "/etc/xen" #define XM_EXAMPLE_PREFIX "xmexample" #define XEND_CONFIG_FILE "xend-config.sxp" #define XEND_PCI_CONFIG_PREFIX "xend-pci-" #define QEMU_IF_SCRIPT "qemu-ifup" #define XM_XML_ERROR "Invalid xml" struct xenUnifiedDriver xenXMDriver = { xenXMOpen, /* open */ xenXMClose, /* close */ NULL, /* version */ NULL, /* hostname */ NULL, /* nodeGetInfo */ NULL, /* getCapabilities */ NULL, /* listDomains */ NULL, /* numOfDomains */ NULL, /* domainCreateXML */ NULL, /* domainSuspend */ NULL, /* domainResume */ NULL, /* domainShutdown */ NULL, /* domainReboot */ NULL, /* domainDestroy */ NULL, /* domainGetOSType */ xenXMDomainGetMaxMemory, /* domainGetMaxMemory */ xenXMDomainSetMaxMemory, /* domainSetMaxMemory */ xenXMDomainSetMemory, /* domainMaxMemory */ xenXMDomainGetInfo, /* domainGetInfo */ NULL, /* domainSave */ NULL, /* domainRestore */ NULL, /* domainCoreDump */ xenXMDomainPinVcpu, /* domainPinVcpu */ NULL, /* domainGetVcpus */ xenXMListDefinedDomains, /* listDefinedDomains */ xenXMNumOfDefinedDomains, /* numOfDefinedDomains */ xenXMDomainCreate, /* domainCreate */ xenXMDomainDefineXML, /* domainDefineXML */ xenXMDomainUndefine, /* domainUndefine */ xenXMDomainAttachDeviceFlags, /* domainAttachDeviceFlags */ xenXMDomainDetachDeviceFlags, /* domainDetachDeviceFlags */ NULL, /* domainUpdateDeviceFlags */ NULL, /* domainGetAutostart */ NULL, /* domainSetAutostart */ NULL, /* domainGetSchedulerType */ NULL, /* domainGetSchedulerParameters */ NULL, /* domainSetSchedulerParameters */ }; #define xenXMError(code, ...) \ virReportErrorHelper(NULL, VIR_FROM_XENXM, code, __FILE__, \ __FUNCTION__, __LINE__, __VA_ARGS__) #ifndef WITH_XEN_INOTIFY static int xenInotifyActive(virConnectPtr conn ATTRIBUTE_UNUSED) { return 0; } #else static int xenInotifyActive(virConnectPtr conn) { xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData; return priv->inotifyWatch > 0; } #endif /* Convenience method to grab a int from the config file object */ static int xenXMConfigGetBool(virConfPtr conf, const char *name, int *value, int def) { virConfValuePtr val; *value = 0; if (!(val = virConfGetValue(conf, name))) { *value = def; return 0; } if (val->type == VIR_CONF_LONG) { *value = val->l ? 1 : 0; } else if (val->type == VIR_CONF_STRING) { *value = STREQ(val->str, "1") ? 1 : 0; } else { xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was malformed"), name); return -1; } return 0; } /* Convenience method to grab a int from the config file object */ static int xenXMConfigGetULong(virConfPtr conf, const char *name, unsigned long *value, int def) { virConfValuePtr val; *value = 0; if (!(val = virConfGetValue(conf, name))) { *value = def; return 0; } if (val->type == VIR_CONF_LONG) { *value = val->l; } else if (val->type == VIR_CONF_STRING) { char *ret; *value = strtol(val->str, &ret, 10); if (ret == val->str) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was malformed"), name); return -1; } } else { xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was malformed"), name); return -1; } return 0; } /* Convenience method to grab a string from the config file object */ static int xenXMConfigGetString(virConfPtr conf, const char *name, const char **value, const char *def) { virConfValuePtr val; *value = NULL; if (!(val = virConfGetValue(conf, name))) { *value = def; return 0; } if (val->type != VIR_CONF_STRING) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was malformed"), name); return -1; } if (!val->str) *value = def; else *value = val->str; return 0; } static int xenXMConfigCopyStringInternal(virConfPtr conf, const char *name, char **value, int allowMissing) { virConfValuePtr val; *value = NULL; if (!(val = virConfGetValue(conf, name))) { if (allowMissing) return 0; xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was missing"), name); return -1; } if (val->type != VIR_CONF_STRING) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was not a string"), name); return -1; } if (!val->str) { if (allowMissing) return 0; xenXMError(VIR_ERR_INTERNAL_ERROR, _("config value %s was missing"), name); return -1; } if (!(*value = strdup(val->str))) { virReportOOMError(); return -1; } return 0; } static int xenXMConfigCopyString(virConfPtr conf, const char *name, char **value) { return xenXMConfigCopyStringInternal(conf, name, value, 0); } static int xenXMConfigCopyStringOpt(virConfPtr conf, const char *name, char **value) { return xenXMConfigCopyStringInternal(conf, name, value, 1); } /* Convenience method to grab a string UUID from the config file object */ static int xenXMConfigGetUUID(virConfPtr conf, const char *name, unsigned char *uuid) { virConfValuePtr val; if (!uuid || !name || !conf) return (-1); if (!(val = virConfGetValue(conf, name))) { return (-1); } if (val->type != VIR_CONF_STRING) return (-1); if (!val->str) return (-1); if (virUUIDParse(val->str, uuid) < 0) return (-1); return (0); } /* Release memory associated with a cached config object */ static void xenXMConfigFree(void *payload, const char *key ATTRIBUTE_UNUSED) { xenXMConfCachePtr entry = (xenXMConfCachePtr)payload; virDomainDefFree(entry->def); VIR_FREE(entry); } struct xenXMConfigReaperData { xenUnifiedPrivatePtr priv; time_t now; }; /* Remove any configs which were not refreshed recently */ static int xenXMConfigReaper(const void *payload, const char *key ATTRIBUTE_UNUSED, const void *data) { const struct xenXMConfigReaperData *args = data; xenXMConfCachePtr entry = (xenXMConfCachePtr)payload; /* We're going to purge this config file, so check if it is currently mapped as owner of a named domain. */ if (entry->refreshedAt != args->now) { const char *olddomname = entry->def->name; char *nameowner = (char *)virHashLookup(args->priv->nameConfigMap, olddomname); if (nameowner && STREQ(nameowner, key)) { virHashRemoveEntry(args->priv->nameConfigMap, olddomname, NULL); } return (1); } return (0); } static virDomainDefPtr xenXMConfigReadFile(virConnectPtr conn, const char *filename) { virConfPtr conf; virDomainDefPtr def; if (!(conf = virConfReadFile(filename, 0))) return NULL; def = xenXMDomainConfigParse(conn, conf); virConfFree(conf); return def; } static int xenXMConfigSaveFile(virConnectPtr conn, const char *filename, virDomainDefPtr def) { virConfPtr conf; int ret; if (!(conf = xenXMDomainConfigFormat(conn, def))) return -1; ret = virConfWriteFile(filename, conf); virConfFree(conf); return ret; } /* * Caller must hold the lock on 'conn->privateData' before * calling this funtion */ int xenXMConfigCacheRemoveFile(virConnectPtr conn, const char *filename) { xenUnifiedPrivatePtr priv = conn->privateData; xenXMConfCachePtr entry; entry = virHashLookup(priv->configCache, filename); if (!entry) { DEBUG("No config entry for %s", filename); return 0; } virHashRemoveEntry(priv->nameConfigMap, entry->def->name, NULL); virHashRemoveEntry(priv->configCache, filename, xenXMConfigFree); DEBUG("Removed %s %s", entry->def->name, filename); return 0; } /* * Caller must hold the lock on 'conn->privateData' before * calling this funtion */ int xenXMConfigCacheAddFile(virConnectPtr conn, const char *filename) { xenUnifiedPrivatePtr priv = conn->privateData; xenXMConfCachePtr entry; struct stat st; int newborn = 0; time_t now = time(NULL); DEBUG("Adding file %s", filename); /* Get modified time */ if ((stat(filename, &st) < 0)) { virReportSystemError(errno, _("cannot stat: %s"), filename); return -1; } /* Ignore zero length files, because inotify fires before any content has actually been created */ if (st.st_size == 0) { DEBUG("Ignoring zero length file %s", filename); return -1; } /* If we already have a matching entry and it is not modified, then carry on to next one*/ if ((entry = virHashLookup(priv->configCache, filename))) { char *nameowner; if (entry->refreshedAt >= st.st_mtime) { entry->refreshedAt = now; /* return success if up-to-date */ return 0; } /* If we currently own the name, then release it and re-acquire it later - just in case it was renamed */ nameowner = (char *)virHashLookup(priv->nameConfigMap, entry->def->name); if (nameowner && STREQ(nameowner, filename)) { virHashRemoveEntry(priv->nameConfigMap, entry->def->name, NULL); } /* Clear existing config entry which needs refresh */ virDomainDefFree(entry->def); entry->def = NULL; } else { /* Completely new entry */ newborn = 1; if (VIR_ALLOC(entry) < 0) { virReportOOMError(); return -1; } memcpy(entry->filename, filename, PATH_MAX); } entry->refreshedAt = now; if (!(entry->def = xenXMConfigReadFile(conn, entry->filename))) { DEBUG("Failed to read %s", entry->filename); if (!newborn) virHashRemoveEntry(priv->configCache, filename, NULL); VIR_FREE(entry); return -1; } /* If its a completely new entry, it must be stuck into the cache (refresh'd entries are already registered) */ if (newborn) { if (virHashAddEntry(priv->configCache, entry->filename, entry) < 0) { virDomainDefFree(entry->def); VIR_FREE(entry); xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("xenXMConfigCacheRefresh: virHashAddEntry")); return -1; } } /* See if we need to map this config file in as the primary owner * of the domain in question */ if (!virHashLookup(priv->nameConfigMap, entry->def->name)) { if (virHashAddEntry(priv->nameConfigMap, entry->def->name, entry->filename) < 0) { virHashRemoveEntry(priv->configCache, filename, NULL); virDomainDefFree(entry->def); VIR_FREE(entry); } } DEBUG("Added config %s %s", entry->def->name, filename); return 0; } /* This method is called by various methods to scan /etc/xen * (or whatever directory was set by LIBVIRT_XM_CONFIG_DIR * environment variable) and process any domain configs. It * has rate-limited so never rescans more frequently than * once every X seconds * * Caller must hold the lock on 'conn->privateData' before * calling this funtion */ int xenXMConfigCacheRefresh (virConnectPtr conn) { xenUnifiedPrivatePtr priv = conn->privateData; DIR *dh; struct dirent *ent; time_t now = time(NULL); int ret = -1; struct xenXMConfigReaperData args; if (now == ((time_t)-1)) { virReportSystemError(errno, "%s", _("cannot get time of day")); return (-1); } /* Rate limit re-scans */ if ((now - priv->lastRefresh) < XM_REFRESH_INTERVAL) return (0); priv->lastRefresh = now; /* Process the files in the config dir */ if (!(dh = opendir(priv->configDir))) { virReportSystemError(errno, _("cannot read directory %s"), priv->configDir); return (-1); } while ((ent = readdir(dh))) { struct stat st; char path[PATH_MAX]; /* * Skip a bunch of crufty files that clearly aren't config files */ /* Like 'dot' files... */ if (STRPREFIX(ent->d_name, ".")) continue; /* ...and the XenD server config file */ if (STRPREFIX(ent->d_name, XEND_CONFIG_FILE)) continue; /* ...and random PCI config cruft */ if (STRPREFIX(ent->d_name, XEND_PCI_CONFIG_PREFIX)) continue; /* ...and the example domain configs */ if (STRPREFIX(ent->d_name, XM_EXAMPLE_PREFIX)) continue; /* ...and the QEMU networking script */ if (STRPREFIX(ent->d_name, QEMU_IF_SCRIPT)) continue; /* ...and editor backups */ if (ent->d_name[0] == '#') continue; if (ent->d_name[strlen(ent->d_name)-1] == '~') continue; /* Build the full file path */ if ((strlen(priv->configDir) + 1 + strlen(ent->d_name) + 1) > PATH_MAX) continue; strcpy(path, priv->configDir); strcat(path, "/"); strcat(path, ent->d_name); /* Skip anything which isn't a file (takes care of scripts/ subdir */ if ((stat(path, &st) < 0) || (!S_ISREG(st.st_mode))) { continue; } /* If we already have a matching entry and it is not modified, then carry on to next one*/ if (xenXMConfigCacheAddFile(conn, path) < 0) { /* Ignoring errors, since alot of stuff goes wrong in /etc/xen */ } } /* Reap all entries which were not changed, by comparing their refresh timestamp - the timestamp should match 'now' if they were refreshed. If timestamp doesn't match then the config is no longer on disk */ args.now = now; args.priv = priv; virHashRemoveSet(priv->configCache, xenXMConfigReaper, xenXMConfigFree, &args); ret = 0; closedir(dh); return (ret); } /* * The XM driver keeps a cache of config files as virDomainDefPtr * objects in the xenUnifiedPrivatePtr. Optionally inotify lets * us watch for changes (see separate driver), otherwise we poll * every few seconds */ virDrvOpenStatus xenXMOpen (virConnectPtr conn, virConnectAuthPtr auth ATTRIBUTE_UNUSED, int flags ATTRIBUTE_UNUSED) { xenUnifiedPrivatePtr priv = conn->privateData; priv->configDir = XM_CONFIG_DIR; priv->configCache = virHashCreate(50, xenXMConfigFree); if (!priv->configCache) return (-1); priv->nameConfigMap = virHashCreate(50, NULL); if (!priv->nameConfigMap) { virHashFree(priv->configCache); priv->configCache = NULL; return (-1); } /* Force the cache to be reloaded next time that * xenXMConfigCacheRefresh is called. */ priv->lastRefresh = 0; return (0); } /* * Free the cached config files associated with this * connection */ int xenXMClose(virConnectPtr conn) { xenUnifiedPrivatePtr priv = conn->privateData; virHashFree(priv->nameConfigMap); virHashFree(priv->configCache); return (0); } /* * Since these are all offline domains, we only return info about * VCPUs and memory. */ int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return(-1); } if (domain->id != -1) return (-1); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto error; if (!(entry = virHashLookup(priv->configCache, filename))) goto error; memset(info, 0, sizeof(virDomainInfo)); info->maxMem = entry->def->mem.max_balloon; info->memory = entry->def->mem.cur_balloon; info->nrVirtCpu = entry->def->vcpus; info->state = VIR_DOMAIN_SHUTOFF; info->cpuTime = 0; xenUnifiedUnlock(priv); return (0); error: xenUnifiedUnlock(priv); return -1; } #define MAX_VFB 1024 /* * Turn a config record into a lump of XML describing the * domain, suitable for later feeding for virDomainCreateXML */ virDomainDefPtr xenXMDomainConfigParse(virConnectPtr conn, virConfPtr conf) { const char *str; int hvm = 0; int val; virConfValuePtr list; xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData; virDomainDefPtr def = NULL; virDomainDiskDefPtr disk = NULL; virDomainNetDefPtr net = NULL; virDomainGraphicsDefPtr graphics = NULL; virDomainHostdevDefPtr hostdev = NULL; int i; const char *defaultArch, *defaultMachine; int vmlocaltime = 0; unsigned long count; if (VIR_ALLOC(def) < 0) { virReportOOMError(); return NULL; } def->virtType = VIR_DOMAIN_VIRT_XEN; def->id = -1; if (xenXMConfigCopyString(conf, "name", &def->name) < 0) goto cleanup; if (xenXMConfigGetUUID(conf, "uuid", def->uuid) < 0) goto cleanup; if ((xenXMConfigGetString(conf, "builder", &str, "linux") == 0) && STREQ(str, "hvm")) hvm = 1; if (!(def->os.type = strdup(hvm ? "hvm" : "xen"))) goto no_memory; defaultArch = virCapabilitiesDefaultGuestArch(priv->caps, def->os.type, virDomainVirtTypeToString(def->virtType)); if (defaultArch == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("no supported architecture for os type '%s'"), def->os.type); goto cleanup; } if (!(def->os.arch = strdup(defaultArch))) goto no_memory; defaultMachine = virCapabilitiesDefaultGuestMachine(priv->caps, def->os.type, def->os.arch, virDomainVirtTypeToString(def->virtType)); if (defaultMachine != NULL) { if (!(def->os.machine = strdup(defaultMachine))) goto no_memory; } if (hvm) { const char *boot; if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0) goto cleanup; if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0) goto cleanup; for (i = 0 ; i < VIR_DOMAIN_BOOT_LAST && boot[i] ; i++) { switch (*boot) { case 'a': def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY; break; case 'd': def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM; break; case 'n': def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET; break; case 'c': default: def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK; break; } def->os.nBootDevs++; } } else { if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "extra", &def->os.cmdline) < 0) goto cleanup; } if (xenXMConfigGetULong(conf, "memory", &def->mem.cur_balloon, MIN_XEN_GUEST_SIZE * 2) < 0) goto cleanup; if (xenXMConfigGetULong(conf, "maxmem", &def->mem.max_balloon, def->mem.cur_balloon) < 0) goto cleanup; def->mem.cur_balloon *= 1024; def->mem.max_balloon *= 1024; if (xenXMConfigGetULong(conf, "vcpus", &count, 1) < 0 || MAX_VIRT_CPUS < count) goto cleanup; def->maxvcpus = count; if (xenXMConfigGetULong(conf, "vcpu_avail", &count, -1) < 0) goto cleanup; def->vcpus = MIN(count_one_bits_l(count), def->maxvcpus); if (xenXMConfigGetString(conf, "cpus", &str, NULL) < 0) goto cleanup; if (str) { def->cpumasklen = 4096; if (VIR_ALLOC_N(def->cpumask, def->cpumasklen) < 0) goto no_memory; if (virDomainCpuSetParse(&str, 0, def->cpumask, def->cpumasklen) < 0) goto cleanup; } if (xenXMConfigGetString(conf, "on_poweroff", &str, "destroy") < 0) goto cleanup; if ((def->onPoweroff = virDomainLifecycleTypeFromString(str)) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected value %s for on_poweroff"), str); goto cleanup; } if (xenXMConfigGetString(conf, "on_reboot", &str, "restart") < 0) goto cleanup; if ((def->onReboot = virDomainLifecycleTypeFromString(str)) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected value %s for on_reboot"), str); goto cleanup; } if (xenXMConfigGetString(conf, "on_crash", &str, "restart") < 0) goto cleanup; if ((def->onCrash = virDomainLifecycleCrashTypeFromString(str)) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected value %s for on_crash"), str); goto cleanup; } if (hvm) { if (xenXMConfigGetBool(conf, "pae", &val, 0) < 0) goto cleanup; else if (val) def->features |= (1 << VIR_DOMAIN_FEATURE_PAE); if (xenXMConfigGetBool(conf, "acpi", &val, 0) < 0) goto cleanup; else if (val) def->features |= (1 << VIR_DOMAIN_FEATURE_ACPI); if (xenXMConfigGetBool(conf, "apic", &val, 0) < 0) goto cleanup; else if (val) def->features |= (1 << VIR_DOMAIN_FEATURE_APIC); if (xenXMConfigGetBool(conf, "hap", &val, 0) < 0) goto cleanup; else if (val) def->features |= (1 << VIR_DOMAIN_FEATURE_HAP); } if (xenXMConfigGetBool(conf, "localtime", &vmlocaltime, 0) < 0) goto cleanup; def->clock.offset = vmlocaltime ? VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME : VIR_DOMAIN_CLOCK_OFFSET_UTC; if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0) goto cleanup; list = virConfGetValue(conf, "disk"); if (list && list->type == VIR_CONF_LIST) { list = list->list; while (list) { char *head; char *offset; char *tmp; if ((list->type != VIR_CONF_STRING) || (list->str == NULL)) goto skipdisk; head = list->str; if (VIR_ALLOC(disk) < 0) goto no_memory; /* * Disks have 3 components, SOURCE,DEST-DEVICE,MODE * eg, phy:/dev/HostVG/XenGuest1,xvda,w * The SOURCE is usually prefixed with a driver type, * and optionally driver sub-type * The DEST-DEVICE is optionally post-fixed with disk type */ /* Extract the source file path*/ if (!(offset = strchr(head, ','))) goto skipdisk; if ((offset - head) >= (PATH_MAX-1)) goto skipdisk; if (offset == head) { disk->src = NULL; /* No source file given, eg CDROM with no media */ } else { if (VIR_ALLOC_N(disk->src, (offset - head) + 1) < 0) goto no_memory; if (virStrncpy(disk->src, head, offset - head, (offset - head) + 1) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Source file %s too big for destination"), head); goto cleanup; } } head = offset + 1; /* Remove legacy ioemu: junk */ if (STRPREFIX(head, "ioemu:")) head = head + 6; /* Extract the dest device name */ if (!(offset = strchr(head, ','))) goto skipdisk; if (VIR_ALLOC_N(disk->dst, (offset - head) + 1) < 0) goto no_memory; if (virStrncpy(disk->dst, head, offset - head, (offset - head) + 1) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Dest file %s too big for destination"), head); goto cleanup; } head = offset + 1; /* Extract source driver type */ if (disk->src) { /* The main type phy:, file:, tap: ... */ if ((tmp = strchr(disk->src, ':')) != NULL) { if (VIR_ALLOC_N(disk->driverName, (tmp - disk->src) + 1) < 0) goto no_memory; if (virStrncpy(disk->driverName, disk->src, (tmp - disk->src), (tmp - disk->src) + 1) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Driver name %s too big for destination"), disk->src); goto cleanup; } /* Strip the prefix we found off the source file name */ memmove(disk->src, disk->src+(tmp-disk->src)+1, strlen(disk->src)-(tmp-disk->src)); } /* And the sub-type for tap:XXX: type */ if (disk->driverName && STREQ(disk->driverName, "tap")) { if (!(tmp = strchr(disk->src, ':'))) goto skipdisk; if (VIR_ALLOC_N(disk->driverType, (tmp - disk->src) + 1) < 0) goto no_memory; if (virStrncpy(disk->driverType, disk->src, (tmp - disk->src), (tmp - disk->src) + 1) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Driver type %s too big for destination"), disk->src); goto cleanup; } /* Strip the prefix we found off the source file name */ memmove(disk->src, disk->src+(tmp-disk->src)+1, strlen(disk->src)-(tmp-disk->src)); } } /* No source, or driver name, so fix to phy: */ if (!disk->driverName && !(disk->driverName = strdup("phy"))) goto no_memory; /* phy: type indicates a block device */ disk->type = STREQ(disk->driverName, "phy") ? VIR_DOMAIN_DISK_TYPE_BLOCK : VIR_DOMAIN_DISK_TYPE_FILE; /* Check for a :cdrom/:disk postfix */ disk->device = VIR_DOMAIN_DISK_DEVICE_DISK; if ((tmp = strchr(disk->dst, ':')) != NULL) { if (STREQ(tmp, ":cdrom")) disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM; tmp[0] = '\0'; } if (STRPREFIX(disk->dst, "xvd") || !hvm) { disk->bus = VIR_DOMAIN_DISK_BUS_XEN; } else if (STRPREFIX(disk->dst, "sd")) { disk->bus = VIR_DOMAIN_DISK_BUS_SCSI; } else { disk->bus = VIR_DOMAIN_DISK_BUS_IDE; } if (STREQ(head, "r") || STREQ(head, "ro")) disk->readonly = 1; else if ((STREQ(head, "w!")) || (STREQ(head, "!"))) disk->shared = 1; /* Maintain list in sorted order according to target device name */ if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) goto no_memory; def->disks[def->ndisks++] = disk; disk = NULL; skipdisk: list = list->next; virDomainDiskDefFree(disk); } } if (hvm && priv->xendConfigVersion == 1) { if (xenXMConfigGetString(conf, "cdrom", &str, NULL) < 0) goto cleanup; if (str) { if (VIR_ALLOC(disk) < 0) goto no_memory; disk->type = VIR_DOMAIN_DISK_TYPE_FILE; disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM; if (!(disk->driverName = strdup("file"))) goto no_memory; if (!(disk->src = strdup(str))) goto no_memory; if (!(disk->dst = strdup("hdc"))) goto no_memory; disk->bus = VIR_DOMAIN_DISK_BUS_IDE; disk->readonly = 1; if (VIR_REALLOC_N(def->disks, def->ndisks+1) < 0) goto no_memory; def->disks[def->ndisks++] = disk; disk = NULL; } } list = virConfGetValue(conf, "vif"); if (list && list->type == VIR_CONF_LIST) { list = list->list; while (list) { char script[PATH_MAX]; char model[10]; char type[10]; char ip[16]; char mac[18]; char bridge[50]; char vifname[50]; char *key; bridge[0] = '\0'; mac[0] = '\0'; script[0] = '\0'; ip[0] = '\0'; model[0] = '\0'; type[0] = '\0'; vifname[0] = '\0'; if ((list->type != VIR_CONF_STRING) || (list->str == NULL)) goto skipnic; key = list->str; while (key) { char *data; char *nextkey = strchr(key, ','); if (!(data = strchr(key, '='))) goto skipnic; data++; if (STRPREFIX(key, "mac=")) { int len = nextkey ? (nextkey - data) : sizeof(mac) - 1; if (virStrncpy(mac, data, len, sizeof(mac)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("MAC address %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "bridge=")) { int len = nextkey ? (nextkey - data) : sizeof(bridge) - 1; if (virStrncpy(bridge, data, len, sizeof(bridge)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Bridge %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "script=")) { int len = nextkey ? (nextkey - data) : sizeof(script) - 1; if (virStrncpy(script, data, len, sizeof(script)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Script %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "model=")) { int len = nextkey ? (nextkey - data) : sizeof(model) - 1; if (virStrncpy(model, data, len, sizeof(model)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Model %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "type=")) { int len = nextkey ? (nextkey - data) : sizeof(type) - 1; if (virStrncpy(type, data, len, sizeof(type)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Type %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "vifname=")) { int len = nextkey ? (nextkey - data) : sizeof(vifname) - 1; if (virStrncpy(vifname, data, len, sizeof(vifname)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Vifname %s too big for destination"), data); goto skipnic; } } else if (STRPREFIX(key, "ip=")) { int len = nextkey ? (nextkey - data) : sizeof(ip) - 1; if (virStrncpy(ip, data, len, sizeof(ip)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("IP %s too big for destination"), data); goto skipnic; } } while (nextkey && (nextkey[0] == ',' || nextkey[0] == ' ' || nextkey[0] == '\t')) nextkey++; key = nextkey; } if (VIR_ALLOC(net) < 0) goto no_memory; if (mac[0]) { if (virParseMacAddr(mac, net->mac) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("malformed mac address '%s'"), mac); goto cleanup; } } if (bridge[0] || STREQ(script, "vif-bridge") || STREQ(script, "vif-vnic")) { net->type = VIR_DOMAIN_NET_TYPE_BRIDGE; } else { net->type = VIR_DOMAIN_NET_TYPE_ETHERNET; } if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) { if (bridge[0] && !(net->data.bridge.brname = strdup(bridge))) goto no_memory; if (script[0] && !(net->data.bridge.script = strdup(script))) goto no_memory; if (ip[0] && !(net->data.bridge.ipaddr = strdup(ip))) goto no_memory; } else { if (script[0] && !(net->data.ethernet.script = strdup(script))) goto no_memory; if (ip[0] && !(net->data.ethernet.ipaddr = strdup(ip))) goto no_memory; } if (model[0] && !(net->model = strdup(model))) goto no_memory; if (!model[0] && type[0] && STREQ(type, "netfront") && !(net->model = strdup("netfront"))) goto no_memory; if (vifname[0] && !(net->ifname = strdup(vifname))) goto no_memory; if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0) goto no_memory; def->nets[def->nnets++] = net; net = NULL; skipnic: list = list->next; virDomainNetDefFree(net); } } list = virConfGetValue(conf, "pci"); if (list && list->type == VIR_CONF_LIST) { list = list->list; while (list) { char domain[5]; char bus[3]; char slot[3]; char func[2]; char *key, *nextkey; int domainID; int busID; int slotID; int funcID; domain[0] = bus[0] = slot[0] = func[0] = '\0'; if ((list->type != VIR_CONF_STRING) || (list->str == NULL)) goto skippci; /* pci=['0000:00:1b.0','0000:00:13.0'] */ if (!(key = list->str)) goto skippci; if (!(nextkey = strchr(key, ':'))) goto skippci; if (virStrncpy(domain, key, (nextkey - key), sizeof(domain)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Domain %s too big for destination"), key); goto skippci; } key = nextkey + 1; if (!(nextkey = strchr(key, ':'))) goto skippci; if (virStrncpy(bus, key, (nextkey - key), sizeof(bus)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Bus %s too big for destination"), key); goto skippci; } key = nextkey + 1; if (!(nextkey = strchr(key, '.'))) goto skippci; if (virStrncpy(slot, key, (nextkey - key), sizeof(slot)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Slot %s too big for destination"), key); goto skippci; } key = nextkey + 1; if (strlen(key) != 1) goto skippci; if (virStrncpy(func, key, 1, sizeof(func)) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("Function %s too big for destination"), key); goto skippci; } if (virStrToLong_i(domain, NULL, 16, &domainID) < 0) goto skippci; if (virStrToLong_i(bus, NULL, 16, &busID) < 0) goto skippci; if (virStrToLong_i(slot, NULL, 16, &slotID) < 0) goto skippci; if (virStrToLong_i(func, NULL, 16, &funcID) < 0) goto skippci; if (VIR_ALLOC(hostdev) < 0) goto no_memory; hostdev->managed = 0; hostdev->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI; hostdev->source.subsys.u.pci.domain = domainID; hostdev->source.subsys.u.pci.bus = busID; hostdev->source.subsys.u.pci.slot = slotID; hostdev->source.subsys.u.pci.function = funcID; if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0) goto no_memory; def->hostdevs[def->nhostdevs++] = hostdev; hostdev = NULL; skippci: list = list->next; } } if (hvm) { if (xenXMConfigGetString(conf, "usbdevice", &str, NULL) < 0) goto cleanup; if (str && (STREQ(str, "tablet") || STREQ(str, "mouse"))) { virDomainInputDefPtr input; if (VIR_ALLOC(input) < 0) goto no_memory; input->bus = VIR_DOMAIN_INPUT_BUS_USB; input->type = STREQ(str, "tablet") ? VIR_DOMAIN_INPUT_TYPE_TABLET : VIR_DOMAIN_INPUT_TYPE_MOUSE; if (VIR_ALLOC_N(def->inputs, 1) < 0) { virDomainInputDefFree(input); goto no_memory; } def->inputs[0] = input; def->ninputs = 1; } } /* HVM guests, or old PV guests use this config format */ if (hvm || priv->xendConfigVersion < 3) { if (xenXMConfigGetBool(conf, "vnc", &val, 0) < 0) goto cleanup; if (val) { if (VIR_ALLOC(graphics) < 0) goto no_memory; graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_VNC; if (xenXMConfigGetBool(conf, "vncunused", &val, 1) < 0) goto cleanup; graphics->data.vnc.autoport = val ? 1 : 0; if (!graphics->data.vnc.autoport) { unsigned long vncdisplay; if (xenXMConfigGetULong(conf, "vncdisplay", &vncdisplay, 0) < 0) goto cleanup; graphics->data.vnc.port = (int)vncdisplay + 5900; } if (xenXMConfigCopyStringOpt(conf, "vnclisten", &graphics->data.vnc.listenAddr) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "vncpasswd", &graphics->data.vnc.auth.passwd) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "keymap", &graphics->data.vnc.keymap) < 0) goto cleanup; if (VIR_ALLOC_N(def->graphics, 1) < 0) goto no_memory; def->graphics[0] = graphics; def->ngraphics = 1; graphics = NULL; } else { if (xenXMConfigGetBool(conf, "sdl", &val, 0) < 0) goto cleanup; if (val) { if (VIR_ALLOC(graphics) < 0) goto no_memory; graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_SDL; if (xenXMConfigCopyStringOpt(conf, "display", &graphics->data.sdl.display) < 0) goto cleanup; if (xenXMConfigCopyStringOpt(conf, "xauthority", &graphics->data.sdl.xauth) < 0) goto cleanup; if (VIR_ALLOC_N(def->graphics, 1) < 0) goto no_memory; def->graphics[0] = graphics; def->ngraphics = 1; graphics = NULL; } } } if (!hvm && def->graphics == NULL) { /* New PV guests use this format */ list = virConfGetValue(conf, "vfb"); if (list && list->type == VIR_CONF_LIST && list->list && list->list->type == VIR_CONF_STRING && list->list->str) { char vfb[MAX_VFB]; char *key = vfb; if (virStrcpyStatic(vfb, list->list->str) == NULL) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("VFB %s too big for destination"), list->list->str); goto cleanup; } if (VIR_ALLOC(graphics) < 0) goto no_memory; if (strstr(key, "type=sdl")) graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_SDL; else graphics->type = VIR_DOMAIN_GRAPHICS_TYPE_VNC; while (key) { char *nextkey = strchr(key, ','); char *end = nextkey; if (nextkey) { *end = '\0'; nextkey++; } if (!strchr(key, '=')) break; if (graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) { if (STRPREFIX(key, "vncunused=")) { if (STREQ(key + 10, "1")) graphics->data.vnc.autoport = 1; } else if (STRPREFIX(key, "vnclisten=")) { if (!(graphics->data.vnc.listenAddr = strdup(key + 10))) goto no_memory; } else if (STRPREFIX(key, "vncpasswd=")) { if (!(graphics->data.vnc.auth.passwd = strdup(key + 10))) goto no_memory; } else if (STRPREFIX(key, "keymap=")) { if (!(graphics->data.vnc.keymap = strdup(key + 7))) goto no_memory; } else if (STRPREFIX(key, "vncdisplay=")) { graphics->data.vnc.port = strtol(key+11, NULL, 10) + 5900; } } else { if (STRPREFIX(key, "display=")) { if (!(graphics->data.sdl.display = strdup(key + 8))) goto no_memory; } else if (STRPREFIX(key, "xauthority=")) { if (!(graphics->data.sdl.xauth = strdup(key + 11))) goto no_memory; } } while (nextkey && (nextkey[0] == ',' || nextkey[0] == ' ' || nextkey[0] == '\t')) nextkey++; key = nextkey; } if (VIR_ALLOC_N(def->graphics, 1) < 0) goto no_memory; def->graphics[0] = graphics; def->ngraphics = 1; graphics = NULL; } } if (hvm) { virDomainChrDefPtr chr = NULL; if (xenXMConfigGetString(conf, "parallel", &str, NULL) < 0) goto cleanup; if (str && STRNEQ(str, "none") && !(chr = xenDaemonParseSxprChar(str, NULL))) goto cleanup; if (chr) { if (VIR_ALLOC_N(def->parallels, 1) < 0) { virDomainChrDefFree(chr); goto no_memory; } chr->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_PARALLEL; def->parallels[0] = chr; def->nparallels++; chr = NULL; } if (xenXMConfigGetString(conf, "serial", &str, NULL) < 0) goto cleanup; if (str && STRNEQ(str, "none") && !(chr = xenDaemonParseSxprChar(str, NULL))) goto cleanup; if (chr) { if (VIR_ALLOC_N(def->serials, 1) < 0) { virDomainChrDefFree(chr); goto no_memory; } chr->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL; def->serials[0] = chr; def->nserials++; } } else { if (!(def->console = xenDaemonParseSxprChar("pty", NULL))) goto cleanup; def->console->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE; def->console->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_XEN; } if (hvm) { if (xenXMConfigGetString(conf, "soundhw", &str, NULL) < 0) goto cleanup; if (str && xenDaemonParseSxprSound(def, str) < 0) goto cleanup; } return def; no_memory: virReportOOMError(); /* fallthrough */ cleanup: virDomainGraphicsDefFree(graphics); virDomainNetDefFree(net); virDomainDiskDefFree(disk); virDomainDefFree(def); return NULL; } /* * Turn a config record into a lump of XML describing the * domain, suitable for later feeding for virDomainCreateXML */ char *xenXMDomainDumpXML(virDomainPtr domain, int flags) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; char *ret = NULL; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return(NULL); } if (domain->id != -1) return (NULL); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; ret = virDomainDefFormat(entry->def, flags); cleanup: xenUnifiedUnlock(priv); return ret; } /* * Update amount of memory in the config file */ int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; int ret = -1; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (-1); } if (domain->conn->flags & VIR_CONNECT_RO) return (-1); if (domain->id != -1) return (-1); if (memory < 1024 * MIN_XEN_GUEST_SIZE) return (-1); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; entry->def->mem.cur_balloon = memory; if (entry->def->mem.cur_balloon > entry->def->mem.max_balloon) entry->def->mem.cur_balloon = entry->def->mem.max_balloon; /* If this fails, should we try to undo our changes to the * in-memory representation of the config file. I say not! */ if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: xenUnifiedUnlock(priv); return ret; } /* * Update maximum memory limit in config */ int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; int ret = -1; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (-1); } if (domain->conn->flags & VIR_CONNECT_RO) return (-1); if (domain->id != -1) return (-1); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; entry->def->mem.max_balloon = memory; if (entry->def->mem.cur_balloon > entry->def->mem.max_balloon) entry->def->mem.cur_balloon = entry->def->mem.max_balloon; /* If this fails, should we try to undo our changes to the * in-memory representation of the config file. I say not! */ if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: xenUnifiedUnlock(priv); return ret; } /* * Get max memory limit from config */ unsigned long xenXMDomainGetMaxMemory(virDomainPtr domain) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; unsigned long ret = 0; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (0); } if (domain->id != -1) return (0); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; ret = entry->def->mem.max_balloon; cleanup: xenUnifiedUnlock(priv); return ret; } /* * xenXMDomainSetVcpusFlags: * @domain: pointer to domain object * @nvcpus: number of vcpus * @flags: bitwise-ORd from virDomainVcpuFlags * * Change virtual CPUs allocation of domain according to flags. * * Returns 0 on success, -1 if an error message was issued, and -2 if * the unified driver should keep trying. */ int xenXMDomainSetVcpusFlags(virDomainPtr domain, unsigned int vcpus, unsigned int flags) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; int ret = -1; int max; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return -1; } if (domain->conn->flags & VIR_CONNECT_RO) { xenXMError(VIR_ERR_OPERATION_DENIED, __FUNCTION__); return -1; } if (domain->id != -1) return -2; if (flags & VIR_DOMAIN_VCPU_LIVE) { xenXMError(VIR_ERR_OPERATION_INVALID, "%s", _("domain is not running")); return -1; } priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; /* Hypervisor maximum. */ if ((max = xenUnifiedGetMaxVcpus(domain->conn, NULL)) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("could not determin max vcpus for the domain")); goto cleanup; } /* Can't specify a current larger than stored maximum; but * reducing maximum can silently reduce current. */ if (!(flags & VIR_DOMAIN_VCPU_MAXIMUM)) max = entry->def->maxvcpus; if (vcpus > max) { xenXMError(VIR_ERR_INVALID_ARG, _("requested vcpus is greater than max allowable" " vcpus for the domain: %d > %d"), vcpus, max); goto cleanup; } if (flags & VIR_DOMAIN_VCPU_MAXIMUM) { entry->def->maxvcpus = vcpus; if (entry->def->vcpus > vcpus) entry->def->vcpus = vcpus; } else { entry->def->vcpus = vcpus; } /* If this fails, should we try to undo our changes to the * in-memory representation of the config file. I say not! */ if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: xenUnifiedUnlock(priv); return ret; } /** * xenXMDomainGetVcpusFlags: * @domain: pointer to domain object * @flags: bitwise-ORd from virDomainVcpuFlags * * Extract information about virtual CPUs of domain according to flags. * * Returns the number of vcpus on success, -1 if an error message was * issued, and -2 if the unified driver should keep trying. */ int xenXMDomainGetVcpusFlags(virDomainPtr domain, unsigned int flags) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; int ret = -2; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return -1; } if (domain->id != -1) return -2; if (flags & VIR_DOMAIN_VCPU_LIVE) { xenXMError(VIR_ERR_OPERATION_FAILED, "%s", _("domain not active")); return -1; } priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; ret = ((flags & VIR_DOMAIN_VCPU_MAXIMUM) ? entry->def->maxvcpus : entry->def->vcpus); cleanup: xenUnifiedUnlock(priv); return ret; } /** * xenXMDomainPinVcpu: * @domain: pointer to domain object * @vcpu: virtual CPU number (reserved) * @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes) * @maplen: length of cpumap in bytes * * Set the vcpu affinity in config * * Returns 0 for success; -1 (with errno) on error */ int xenXMDomainPinVcpu(virDomainPtr domain, unsigned int vcpu ATTRIBUTE_UNUSED, unsigned char *cpumap, int maplen) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; virBuffer mapbuf = VIR_BUFFER_INITIALIZER; char *mapstr = NULL, *mapsave = NULL; int i, j, n, comma = 0; int ret = -1; char *cpuset = NULL; int maxcpu = XEN_MAX_PHYSICAL_CPU; if (domain == NULL || domain->conn == NULL || domain->name == NULL || cpumap == NULL || maplen < 1 || maplen > (int)sizeof(cpumap_t)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return -1; } if (domain->conn->flags & VIR_CONNECT_RO) { xenXMError(VIR_ERR_INVALID_ARG, "%s", _("read only connection")); return -1; } if (domain->id != -1) { xenXMError(VIR_ERR_INVALID_ARG, "%s", _("not inactive domain")); return -1; } priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("virHashLookup")); goto cleanup; } if (!(entry = virHashLookup(priv->configCache, filename))) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("can't retrieve config file for domain")); goto cleanup; } /* from bit map, build character string of mapped CPU numbers */ for (i = 0; i < maplen; i++) for (j = 0; j < 8; j++) if ((cpumap[i] & (1 << j))) { n = i*8 + j; if (comma) virBufferAddLit (&mapbuf, ","); comma = 1; virBufferVSprintf (&mapbuf, "%d", n); } if (virBufferError(&mapbuf)) { virBufferFreeAndReset(&mapbuf); virReportOOMError(); goto cleanup; } mapstr = virBufferContentAndReset(&mapbuf); mapsave = mapstr; if (VIR_ALLOC_N(cpuset, maxcpu) < 0) { virReportOOMError(); goto cleanup; } if (virDomainCpuSetParse((const char **)&mapstr, 0, cpuset, maxcpu) < 0) goto cleanup; VIR_FREE(entry->def->cpumask); entry->def->cpumask = cpuset; entry->def->cpumasklen = maxcpu; cpuset = NULL; if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: VIR_FREE(mapsave); VIR_FREE(cpuset); xenUnifiedUnlock(priv); return (ret); } /* * Find an inactive domain based on its name */ virDomainPtr xenXMDomainLookupByName(virConnectPtr conn, const char *domname) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; virDomainPtr ret = NULL; if (!VIR_IS_CONNECT(conn)) { xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__); return (NULL); } if (domname == NULL) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (NULL); } priv = conn->privateData; xenUnifiedLock(priv); if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) goto cleanup; if (!(filename = virHashLookup(priv->nameConfigMap, domname))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; if (!(ret = virGetDomain(conn, domname, entry->def->uuid))) goto cleanup; /* Ensure its marked inactive, because may be cached handle to a previously active domain */ ret->id = -1; cleanup: xenUnifiedUnlock(priv); return (ret); } /* * Hash table iterator to search for a domain based on UUID */ static int xenXMDomainSearchForUUID(const void *payload, const char *name ATTRIBUTE_UNUSED, const void *data) { const unsigned char *wantuuid = (const unsigned char *)data; const xenXMConfCachePtr entry = (const xenXMConfCachePtr)payload; if (!memcmp(entry->def->uuid, wantuuid, VIR_UUID_BUFLEN)) return (1); return (0); } /* * Find an inactive domain based on its UUID */ virDomainPtr xenXMDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid) { xenUnifiedPrivatePtr priv; xenXMConfCachePtr entry; virDomainPtr ret = NULL; if (!VIR_IS_CONNECT(conn)) { xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__); return (NULL); } if (uuid == NULL) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (NULL); } priv = conn->privateData; xenUnifiedLock(priv); if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) goto cleanup; if (!(entry = virHashSearch(priv->configCache, xenXMDomainSearchForUUID, (const void *)uuid))) goto cleanup; if (!(ret = virGetDomain(conn, entry->def->name, uuid))) goto cleanup; /* Ensure its marked inactive, because may be cached handle to a previously active domain */ ret->id = -1; cleanup: xenUnifiedUnlock(priv); return (ret); } /* * Start a domain from an existing defined config file */ int xenXMDomainCreate(virDomainPtr domain) { char *sexpr; int ret = -1; xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; priv = (xenUnifiedPrivatePtr) domain->conn->privateData; if (domain->id != -1) return (-1); xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto error; if (!(entry = virHashLookup(priv->configCache, filename))) goto error; if (!(sexpr = xenDaemonFormatSxpr(domain->conn, entry->def, priv->xendConfigVersion))) goto error; ret = xenDaemonDomainCreateXML(domain->conn, sexpr); VIR_FREE(sexpr); if (ret != 0) goto error; if ((ret = xenDaemonDomainLookupByName_ids(domain->conn, domain->name, entry->def->uuid)) < 0) goto error; domain->id = ret; if (xend_wait_for_devices(domain->conn, domain->name) < 0) goto error; if (xenDaemonDomainResume(domain) < 0) goto error; xenUnifiedUnlock(priv); return (0); error: if (domain->id != -1) { xenDaemonDomainDestroy(domain); domain->id = -1; } xenUnifiedUnlock(priv); return (-1); } static int xenXMConfigSetInt(virConfPtr conf, const char *setting, long l) { virConfValuePtr value = NULL; if (VIR_ALLOC(value) < 0) { virReportOOMError(); return -1; } value->type = VIR_CONF_LONG; value->next = NULL; value->l = l; return virConfSetValue(conf, setting, value); } static int xenXMConfigSetString(virConfPtr conf, const char *setting, const char *str) { virConfValuePtr value = NULL; if (VIR_ALLOC(value) < 0) { virReportOOMError(); return -1; } value->type = VIR_CONF_STRING; value->next = NULL; if (!(value->str = strdup(str))) { VIR_FREE(value); virReportOOMError(); return -1; } return virConfSetValue(conf, setting, value); } static int xenXMDomainConfigFormatDisk(virConfValuePtr list, virDomainDiskDefPtr disk, int hvm, int xendConfigVersion) { virBuffer buf = VIR_BUFFER_INITIALIZER; virConfValuePtr val, tmp; if(disk->src) { if (disk->driverName) { virBufferVSprintf(&buf, "%s:", disk->driverName); if (STREQ(disk->driverName, "tap")) virBufferVSprintf(&buf, "%s:", disk->driverType ? disk->driverType : "aio"); } else { switch (disk->type) { case VIR_DOMAIN_DISK_TYPE_FILE: virBufferAddLit(&buf, "file:"); break; case VIR_DOMAIN_DISK_TYPE_BLOCK: virBufferAddLit(&buf, "phy:"); break; default: xenXMError(VIR_ERR_INTERNAL_ERROR, _("unsupported disk type %s"), virDomainDiskTypeToString(disk->type)); goto cleanup; } } virBufferVSprintf(&buf, "%s", disk->src); } virBufferAddLit(&buf, ","); if (hvm && xendConfigVersion == 1) virBufferAddLit(&buf, "ioemu:"); virBufferVSprintf(&buf, "%s", disk->dst); if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) virBufferAddLit(&buf, ":cdrom"); if (disk->readonly) virBufferAddLit(&buf, ",r"); else if (disk->shared) virBufferAddLit(&buf, ",!"); else virBufferAddLit(&buf, ",w"); if (virBufferError(&buf)) { virReportOOMError(); goto cleanup; } if (VIR_ALLOC(val) < 0) { virReportOOMError(); goto cleanup; } val->type = VIR_CONF_STRING; val->str = virBufferContentAndReset(&buf); tmp = list->list; while (tmp && tmp->next) tmp = tmp->next; if (tmp) tmp->next = val; else list->list = val; return 0; cleanup: virBufferFreeAndReset(&buf); return -1; } static int xenXMDomainConfigFormatNet(virConnectPtr conn, virConfValuePtr list, virDomainNetDefPtr net, int hvm) { virBuffer buf = VIR_BUFFER_INITIALIZER; virConfValuePtr val, tmp; xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData; virBufferVSprintf(&buf, "mac=%02x:%02x:%02x:%02x:%02x:%02x", net->mac[0], net->mac[1], net->mac[2], net->mac[3], net->mac[4], net->mac[5]); switch (net->type) { case VIR_DOMAIN_NET_TYPE_BRIDGE: virBufferVSprintf(&buf, ",bridge=%s", net->data.bridge.brname); if (net->data.bridge.ipaddr) virBufferVSprintf(&buf, ",ip=%s", net->data.bridge.ipaddr); virBufferVSprintf(&buf, ",script=%s", DEFAULT_VIF_SCRIPT); break; case VIR_DOMAIN_NET_TYPE_ETHERNET: if (net->data.ethernet.script) virBufferVSprintf(&buf, ",script=%s", net->data.ethernet.script); if (net->data.ethernet.ipaddr) virBufferVSprintf(&buf, ",ip=%s", net->data.ethernet.ipaddr); break; case VIR_DOMAIN_NET_TYPE_NETWORK: { virNetworkPtr network = virNetworkLookupByName(conn, net->data.network.name); char *bridge; if (!network) { xenXMError(VIR_ERR_NO_NETWORK, "%s", net->data.network.name); return -1; } bridge = virNetworkGetBridgeName(network); virNetworkFree(network); if (!bridge) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("network %s is not active"), net->data.network.name); return -1; } virBufferVSprintf(&buf, ",bridge=%s", bridge); virBufferVSprintf(&buf, ",script=%s", DEFAULT_VIF_SCRIPT); } break; default: xenXMError(VIR_ERR_INTERNAL_ERROR, _("unsupported network type %d"), net->type); goto cleanup; } if (!hvm) { if (net->model != NULL) virBufferVSprintf(&buf, ",model=%s", net->model); } else if (net->model == NULL) { /* * apparently type ioemu breaks paravirt drivers on HVM so skip this * from XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU */ if (priv->xendConfigVersion <= XEND_CONFIG_MAX_VERS_NET_TYPE_IOEMU) virBufferAddLit(&buf, ",type=ioemu"); } else if (STREQ(net->model, "netfront")) { virBufferAddLit(&buf, ",type=netfront"); } else { virBufferVSprintf(&buf, ",model=%s", net->model); virBufferAddLit(&buf, ",type=ioemu"); } if (net->ifname) virBufferVSprintf(&buf, ",vifname=%s", net->ifname); if (virBufferError(&buf)) { virReportOOMError(); goto cleanup; } if (VIR_ALLOC(val) < 0) { virReportOOMError(); goto cleanup; } val->type = VIR_CONF_STRING; val->str = virBufferContentAndReset(&buf); tmp = list->list; while (tmp && tmp->next) tmp = tmp->next; if (tmp) tmp->next = val; else list->list = val; return 0; cleanup: virBufferFreeAndReset(&buf); return -1; } static int xenXMDomainConfigFormatPCI(virConfPtr conf, virDomainDefPtr def) { virConfValuePtr pciVal = NULL; int hasPCI = 0; int i; for (i = 0 ; i < def->nhostdevs ; i++) if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) hasPCI = 1; if (!hasPCI) return 0; if (VIR_ALLOC(pciVal) < 0) { virReportOOMError(); return -1; } pciVal->type = VIR_CONF_LIST; pciVal->list = NULL; for (i = 0 ; i < def->nhostdevs ; i++) { if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) { virConfValuePtr val, tmp; char *buf; if (virAsprintf(&buf, "%04x:%02x:%02x.%x", def->hostdevs[i]->source.subsys.u.pci.domain, def->hostdevs[i]->source.subsys.u.pci.bus, def->hostdevs[i]->source.subsys.u.pci.slot, def->hostdevs[i]->source.subsys.u.pci.function) < 0) { virReportOOMError(); goto error; } if (VIR_ALLOC(val) < 0) { VIR_FREE(buf); virReportOOMError(); goto error; } val->type = VIR_CONF_STRING; val->str = buf; tmp = pciVal->list; while (tmp && tmp->next) tmp = tmp->next; if (tmp) tmp->next = val; else pciVal->list = val; } } if (pciVal->list != NULL) { int ret = virConfSetValue(conf, "pci", pciVal); pciVal = NULL; if (ret < 0) return -1; } VIR_FREE(pciVal); return 0; error: virConfFreeValue(pciVal); return -1; } /* Computing the vcpu_avail bitmask works because MAX_VIRT_CPUS is either 32, or 64 on a platform where long is big enough. */ verify(MAX_VIRT_CPUS <= sizeof(1UL) * CHAR_BIT); virConfPtr xenXMDomainConfigFormat(virConnectPtr conn, virDomainDefPtr def) { virConfPtr conf = NULL; int hvm = 0, i; xenUnifiedPrivatePtr priv; char *cpus = NULL; const char *lifecycle; char uuid[VIR_UUID_STRING_BUFLEN]; virConfValuePtr diskVal = NULL; virConfValuePtr netVal = NULL; priv = (xenUnifiedPrivatePtr) conn->privateData; if (!(conf = virConfNew())) goto cleanup; if (xenXMConfigSetString(conf, "name", def->name) < 0) goto no_memory; virUUIDFormat(def->uuid, uuid); if (xenXMConfigSetString(conf, "uuid", uuid) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "maxmem", VIR_DIV_UP(def->mem.max_balloon, 1024)) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "memory", VIR_DIV_UP(def->mem.cur_balloon, 1024)) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "vcpus", def->maxvcpus) < 0) goto no_memory; /* Computing the vcpu_avail bitmask works because MAX_VIRT_CPUS is either 32, or 64 on a platform where long is big enough. */ if (def->vcpus < def->maxvcpus && xenXMConfigSetInt(conf, "vcpu_avail", (1UL << def->vcpus) - 1) < 0) goto no_memory; if ((def->cpumask != NULL) && ((cpus = virDomainCpuSetFormat(def->cpumask, def->cpumasklen)) == NULL)) goto cleanup; if (cpus && xenXMConfigSetString(conf, "cpus", cpus) < 0) goto no_memory; VIR_FREE(cpus); hvm = STREQ(def->os.type, "hvm") ? 1 : 0; if (hvm) { char boot[VIR_DOMAIN_BOOT_LAST+1]; if (xenXMConfigSetString(conf, "builder", "hvm") < 0) goto no_memory; if (def->os.loader && xenXMConfigSetString(conf, "kernel", def->os.loader) < 0) goto no_memory; for (i = 0 ; i < def->os.nBootDevs ; i++) { switch (def->os.bootDevs[i]) { case VIR_DOMAIN_BOOT_FLOPPY: boot[i] = 'a'; break; case VIR_DOMAIN_BOOT_CDROM: boot[i] = 'd'; break; case VIR_DOMAIN_BOOT_NET: boot[i] = 'n'; break; case VIR_DOMAIN_BOOT_DISK: default: boot[i] = 'c'; break; } } if (!def->os.nBootDevs) { boot[0] = 'c'; boot[1] = '\0'; } else { boot[def->os.nBootDevs] = '\0'; } if (xenXMConfigSetString(conf, "boot", boot) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "pae", (def->features & (1 << VIR_DOMAIN_FEATURE_PAE)) ? 1 : 0) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "acpi", (def->features & (1 << VIR_DOMAIN_FEATURE_ACPI)) ? 1 : 0) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "apic", (def->features & (1 << VIR_DOMAIN_FEATURE_APIC)) ? 1 : 0) < 0) goto no_memory; if (priv->xendConfigVersion >= 3) if (xenXMConfigSetInt(conf, "hap", (def->features & (1 << VIR_DOMAIN_FEATURE_HAP)) ? 1 : 0) < 0) goto no_memory; if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME) { if (def->clock.data.timezone) { xenXMError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", _("configurable timezones are not supported")); goto cleanup; } if (xenXMConfigSetInt(conf, "localtime", 1) < 0) goto no_memory; } else if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_UTC) { if (xenXMConfigSetInt(conf, "localtime", 0) < 0) goto no_memory; } else { /* XXX We could support Xen's rtc clock offset */ xenXMError(VIR_ERR_CONFIG_UNSUPPORTED, _("unsupported clock offset '%s'"), virDomainClockOffsetTypeToString(def->clock.offset)); goto cleanup; } if (priv->xendConfigVersion == 1) { for (i = 0 ; i < def->ndisks ; i++) { if (def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM && def->disks[i]->dst && STREQ(def->disks[i]->dst, "hdc") && def->disks[i]->src) { if (xenXMConfigSetString(conf, "cdrom", def->disks[i]->src) < 0) goto no_memory; break; } } } /* XXX floppy disks */ } else { if (def->os.bootloader && xenXMConfigSetString(conf, "bootloader", def->os.bootloader) < 0) goto no_memory; if (def->os.bootloaderArgs && xenXMConfigSetString(conf, "bootargs", def->os.bootloaderArgs) < 0) goto no_memory; if (def->os.kernel && xenXMConfigSetString(conf, "kernel", def->os.kernel) < 0) goto no_memory; if (def->os.initrd && xenXMConfigSetString(conf, "ramdisk", def->os.initrd) < 0) goto no_memory; if (def->os.cmdline && xenXMConfigSetString(conf, "extra", def->os.cmdline) < 0) goto no_memory; } if (!(lifecycle = virDomainLifecycleTypeToString(def->onPoweroff))) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected lifecycle action %d"), def->onPoweroff); goto cleanup; } if (xenXMConfigSetString(conf, "on_poweroff", lifecycle) < 0) goto no_memory; if (!(lifecycle = virDomainLifecycleTypeToString(def->onReboot))) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected lifecycle action %d"), def->onReboot); goto cleanup; } if (xenXMConfigSetString(conf, "on_reboot", lifecycle) < 0) goto no_memory; if (!(lifecycle = virDomainLifecycleCrashTypeToString(def->onCrash))) { xenXMError(VIR_ERR_INTERNAL_ERROR, _("unexpected lifecycle action %d"), def->onCrash); goto cleanup; } if (xenXMConfigSetString(conf, "on_crash", lifecycle) < 0) goto no_memory; if (hvm) { if (def->emulator && xenXMConfigSetString(conf, "device_model", def->emulator) < 0) goto no_memory; for (i = 0 ; i < def->ninputs ; i++) { if (def->inputs[i]->bus == VIR_DOMAIN_INPUT_BUS_USB) { if (xenXMConfigSetInt(conf, "usb", 1) < 0) goto no_memory; if (xenXMConfigSetString(conf, "usbdevice", def->inputs[i]->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ? "mouse" : "tablet") < 0) goto no_memory; break; } } } if (def->ngraphics == 1) { if (priv->xendConfigVersion < (hvm ? 4 : XEND_CONFIG_MIN_VERS_PVFB_NEWCONF)) { if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) { if (xenXMConfigSetInt(conf, "sdl", 1) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "vnc", 0) < 0) goto no_memory; if (def->graphics[0]->data.sdl.display && xenXMConfigSetString(conf, "display", def->graphics[0]->data.sdl.display) < 0) goto no_memory; if (def->graphics[0]->data.sdl.xauth && xenXMConfigSetString(conf, "xauthority", def->graphics[0]->data.sdl.xauth) < 0) goto no_memory; } else { if (xenXMConfigSetInt(conf, "sdl", 0) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "vnc", 1) < 0) goto no_memory; if (xenXMConfigSetInt(conf, "vncunused", def->graphics[0]->data.vnc.autoport ? 1 : 0) < 0) goto no_memory; if (!def->graphics[0]->data.vnc.autoport && xenXMConfigSetInt(conf, "vncdisplay", def->graphics[0]->data.vnc.port - 5900) < 0) goto no_memory; if (def->graphics[0]->data.vnc.listenAddr && xenXMConfigSetString(conf, "vnclisten", def->graphics[0]->data.vnc.listenAddr) < 0) goto no_memory; if (def->graphics[0]->data.vnc.auth.passwd && xenXMConfigSetString(conf, "vncpasswd", def->graphics[0]->data.vnc.auth.passwd) < 0) goto no_memory; if (def->graphics[0]->data.vnc.keymap && xenXMConfigSetString(conf, "keymap", def->graphics[0]->data.vnc.keymap) < 0) goto no_memory; } } else { virConfValuePtr vfb, disp; char *vfbstr = NULL; virBuffer buf = VIR_BUFFER_INITIALIZER; if (def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) { virBufferAddLit(&buf, "type=sdl"); if (def->graphics[0]->data.sdl.display) virBufferVSprintf(&buf, ",display=%s", def->graphics[0]->data.sdl.display); if (def->graphics[0]->data.sdl.xauth) virBufferVSprintf(&buf, ",xauthority=%s", def->graphics[0]->data.sdl.xauth); } else { virBufferAddLit(&buf, "type=vnc"); virBufferVSprintf(&buf, ",vncunused=%d", def->graphics[0]->data.vnc.autoport ? 1 : 0); if (!def->graphics[0]->data.vnc.autoport) virBufferVSprintf(&buf, ",vncdisplay=%d", def->graphics[0]->data.vnc.port - 5900); if (def->graphics[0]->data.vnc.listenAddr) virBufferVSprintf(&buf, ",vnclisten=%s", def->graphics[0]->data.vnc.listenAddr); if (def->graphics[0]->data.vnc.auth.passwd) virBufferVSprintf(&buf, ",vncpasswd=%s", def->graphics[0]->data.vnc.auth.passwd); if (def->graphics[0]->data.vnc.keymap) virBufferVSprintf(&buf, ",keymap=%s", def->graphics[0]->data.vnc.keymap); } if (virBufferError(&buf)) { virBufferFreeAndReset(&buf); goto no_memory; } vfbstr = virBufferContentAndReset(&buf); if (VIR_ALLOC(vfb) < 0) { VIR_FREE(vfbstr); goto no_memory; } if (VIR_ALLOC(disp) < 0) { VIR_FREE(vfb); VIR_FREE(vfbstr); goto no_memory; } vfb->type = VIR_CONF_LIST; vfb->list = disp; disp->type = VIR_CONF_STRING; disp->str = vfbstr; if (virConfSetValue(conf, "vfb", vfb) < 0) goto no_memory; } } /* analyze of the devices */ if (VIR_ALLOC(diskVal) < 0) goto no_memory; diskVal->type = VIR_CONF_LIST; diskVal->list = NULL; for (i = 0 ; i < def->ndisks ; i++) { if (priv->xendConfigVersion == 1 && def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_CDROM && def->disks[i]->dst && STREQ(def->disks[i]->dst, "hdc")) { continue; } if (def->disks[i]->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY) continue; if (xenXMDomainConfigFormatDisk(diskVal, def->disks[i], hvm, priv->xendConfigVersion) < 0) goto cleanup; } if (diskVal->list != NULL) { int ret = virConfSetValue(conf, "disk", diskVal); diskVal = NULL; if (ret < 0) goto no_memory; } VIR_FREE(diskVal); if (VIR_ALLOC(netVal) < 0) goto no_memory; netVal->type = VIR_CONF_LIST; netVal->list = NULL; for (i = 0 ; i < def->nnets ; i++) { if (xenXMDomainConfigFormatNet(conn, netVal, def->nets[i], hvm) < 0) goto cleanup; } if (netVal->list != NULL) { int ret = virConfSetValue(conf, "vif", netVal); netVal = NULL; if (ret < 0) goto no_memory; } VIR_FREE(netVal); if (xenXMDomainConfigFormatPCI(conf, def) < 0) goto cleanup; if (hvm) { if (def->nparallels) { virBuffer buf = VIR_BUFFER_INITIALIZER; char *str; int ret; ret = xenDaemonFormatSxprChr(def->parallels[0], &buf); str = virBufferContentAndReset(&buf); if (ret == 0) ret = xenXMConfigSetString(conf, "parallel", str); VIR_FREE(str); if (ret < 0) goto no_memory; } else { if (xenXMConfigSetString(conf, "parallel", "none") < 0) goto no_memory; } if (def->nserials) { virBuffer buf = VIR_BUFFER_INITIALIZER; char *str; int ret; ret = xenDaemonFormatSxprChr(def->serials[0], &buf); str = virBufferContentAndReset(&buf); if (ret == 0) ret = xenXMConfigSetString(conf, "serial", str); VIR_FREE(str); if (ret < 0) goto no_memory; } else { if (xenXMConfigSetString(conf, "serial", "none") < 0) goto no_memory; } if (def->sounds) { virBuffer buf = VIR_BUFFER_INITIALIZER; char *str = NULL; int ret = xenDaemonFormatSxprSound(def, &buf); str = virBufferContentAndReset(&buf); if (ret == 0) ret = xenXMConfigSetString(conf, "soundhw", str); VIR_FREE(str); if (ret < 0) goto no_memory; } } return conf; no_memory: virReportOOMError(); cleanup: virConfFreeValue(diskVal); virConfFreeValue(netVal); VIR_FREE(cpus); if (conf) virConfFree(conf); return (NULL); } /* * Create a config file for a domain, based on an XML * document describing its config */ virDomainPtr xenXMDomainDefineXML(virConnectPtr conn, const char *xml) { virDomainPtr ret; char filename[PATH_MAX]; const char * oldfilename; virDomainDefPtr def = NULL; xenXMConfCachePtr entry = NULL; xenUnifiedPrivatePtr priv = (xenUnifiedPrivatePtr) conn->privateData; if (!VIR_IS_CONNECT(conn)) { xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__); return (NULL); } if (xml == NULL) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (NULL); } if (conn->flags & VIR_CONNECT_RO) return (NULL); xenUnifiedLock(priv); if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) { xenUnifiedUnlock(priv); return (NULL); } if (!(def = virDomainDefParseString(priv->caps, xml, VIR_DOMAIN_XML_INACTIVE))) { xenUnifiedUnlock(priv); return (NULL); } /* * check that if there is another domain defined with the same uuid * it has the same name */ if ((entry = virHashSearch(priv->configCache, xenXMDomainSearchForUUID, (const void *)&(def->uuid))) != NULL) { if ((entry->def != NULL) && (entry->def->name != NULL) && (STRNEQ(def->name, entry->def->name))) { char uuidstr[VIR_UUID_STRING_BUFLEN]; virUUIDFormat(entry->def->uuid, uuidstr); xenXMError(VIR_ERR_OPERATION_FAILED, _("domain '%s' is already defined with uuid %s"), entry->def->name, uuidstr); entry = NULL; goto error; } entry = NULL; } if (virHashLookup(priv->nameConfigMap, def->name)) { /* domain exists, we will overwrite it */ if (!(oldfilename = (char *)virHashLookup(priv->nameConfigMap, def->name))) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("can't retrieve config filename for domain to overwrite")); goto error; } if (!(entry = virHashLookup(priv->configCache, oldfilename))) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("can't retrieve config entry for domain to overwrite")); goto error; } /* Remove the name -> filename mapping */ if (virHashRemoveEntry(priv->nameConfigMap, def->name, NULL) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("failed to remove old domain from config map")); goto error; } /* Remove the config record itself */ if (virHashRemoveEntry(priv->configCache, oldfilename, xenXMConfigFree) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("failed to remove old domain from config map")); goto error; } entry = NULL; } if ((strlen(priv->configDir) + 1 + strlen(def->name) + 1) > PATH_MAX) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("config file name is too long")); goto error; } strcpy(filename, priv->configDir); strcat(filename, "/"); strcat(filename, def->name); if (xenXMConfigSaveFile(conn, filename, def) < 0) goto error; if (VIR_ALLOC(entry) < 0) { virReportOOMError(); goto error; } if ((entry->refreshedAt = time(NULL)) == ((time_t)-1)) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("unable to get current time")); goto error; } memmove(entry->filename, filename, PATH_MAX); entry->def = def; if (virHashAddEntry(priv->configCache, filename, entry) < 0) { xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("unable to store config file handle")); goto error; } if (virHashAddEntry(priv->nameConfigMap, def->name, entry->filename) < 0) { virHashRemoveEntry(priv->configCache, filename, NULL); xenXMError(VIR_ERR_INTERNAL_ERROR, "%s", _("unable to store config file handle")); goto error; } ret = virGetDomain(conn, def->name, def->uuid); xenUnifiedUnlock(priv); return (ret); error: VIR_FREE(entry); virDomainDefFree(def); xenUnifiedUnlock(priv); return (NULL); } /* * Delete a domain from disk */ int xenXMDomainUndefine(virDomainPtr domain) { xenUnifiedPrivatePtr priv; const char *filename; xenXMConfCachePtr entry; int ret = -1; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return (-1); } if (domain->id != -1) return (-1); if (domain->conn->flags & VIR_CONNECT_RO) return (-1); priv = domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; if (unlink(entry->filename) < 0) goto cleanup; /* Remove the name -> filename mapping */ if (virHashRemoveEntry(priv->nameConfigMap, domain->name, NULL) < 0) goto cleanup; /* Remove the config record itself */ if (virHashRemoveEntry(priv->configCache, entry->filename, xenXMConfigFree) < 0) goto cleanup; ret = 0; cleanup: xenUnifiedUnlock(priv); return ret; } struct xenXMListIteratorContext { virConnectPtr conn; int oom; int max; int count; char ** names; }; static void xenXMListIterator(void *payload ATTRIBUTE_UNUSED, const char *name, void *data) { struct xenXMListIteratorContext *ctx = data; virDomainPtr dom = NULL; if (ctx->oom) return; if (ctx->count == ctx->max) return; dom = xenDaemonLookupByName(ctx->conn, name); if (!dom) { if (!(ctx->names[ctx->count] = strdup(name))) ctx->oom = 1; else ctx->count++; } else { virDomainFree(dom); } } /* * List all defined domains, filtered to remove any which * are currently running */ int xenXMListDefinedDomains(virConnectPtr conn, char **const names, int maxnames) { xenUnifiedPrivatePtr priv; struct xenXMListIteratorContext ctx; int i, ret = -1; if (!VIR_IS_CONNECT(conn)) { xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__); return (-1); } priv = conn->privateData; xenUnifiedLock(priv); if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) goto cleanup; if (maxnames > virHashSize(priv->configCache)) maxnames = virHashSize(priv->configCache); ctx.conn = conn; ctx.oom = 0; ctx.count = 0; ctx.max = maxnames; ctx.names = names; virHashForEach(priv->nameConfigMap, xenXMListIterator, &ctx); if (ctx.oom) { for (i = 0; i < ctx.count; i++) VIR_FREE(ctx.names[i]); virReportOOMError(); goto cleanup; } ret = ctx.count; cleanup: xenUnifiedUnlock(priv); return ret; } /* * Return the maximum number of defined domains - not filtered * based on number running */ int xenXMNumOfDefinedDomains(virConnectPtr conn) { xenUnifiedPrivatePtr priv; int ret = -1; if (!VIR_IS_CONNECT(conn)) { xenXMError(VIR_ERR_INVALID_CONN, __FUNCTION__); return (-1); } priv = conn->privateData; xenUnifiedLock(priv); if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh (conn) < 0) goto cleanup; ret = virHashSize(priv->nameConfigMap); cleanup: xenUnifiedUnlock(priv); return ret; } /** * xenXMDomainAttachDeviceFlags: * @domain: pointer to domain object * @xml: pointer to XML description of device * @flags: an OR'ed set of virDomainDeviceModifyFlags * * Create a virtual device attachment to backend. * XML description is translated into config file. * This driver only supports device allocation to * persisted config. * * Returns 0 in case of success, -1 in case of failure. */ static int xenXMDomainAttachDeviceFlags(virDomainPtr domain, const char *xml, unsigned int flags) { const char *filename = NULL; xenXMConfCachePtr entry = NULL; int ret = -1; virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def; xenUnifiedPrivatePtr priv; if ((!domain) || (!domain->conn) || (!domain->name) || (!xml)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return -1; } if (domain->conn->flags & VIR_CONNECT_RO) return -1; if ((flags & VIR_DOMAIN_DEVICE_MODIFY_LIVE) || (domain->id != -1 && (flags & VIR_DOMAIN_DEVICE_MODIFY_CURRENT))) { xenXMError(VIR_ERR_OPERATION_INVALID, "%s", _("Xm driver only supports modifying persistent config")); return -1; } priv = (xenUnifiedPrivatePtr) domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; def = entry->def; if (!(dev = virDomainDeviceDefParse(priv->caps, entry->def, xml, VIR_DOMAIN_XML_INACTIVE))) goto cleanup; switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: { if (virDomainDiskInsert(def, dev->data.disk) < 0) { virReportOOMError(); goto cleanup; } dev->data.disk = NULL; } break; case VIR_DOMAIN_DEVICE_NET: { if (VIR_REALLOC_N(def->nets, def->nnets+1) < 0) { virReportOOMError(); goto cleanup; } def->nets[def->nnets++] = dev->data.net; dev->data.net = NULL; break; } default: xenXMError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", _("Xm driver only supports adding disk or network devices")); goto cleanup; } /* If this fails, should we try to undo our changes to the * in-memory representation of the config file. I say not! */ if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: virDomainDeviceDefFree(dev); xenUnifiedUnlock(priv); return ret; } /** * xenXMDomainDetachDeviceFlags: * @domain: pointer to domain object * @xml: pointer to XML description of device * @flags: an OR'ed set of virDomainDeviceModifyFlags * * Destroy a virtual device attachment to backend. * This driver only supports device deallocation from * persisted config. * * Returns 0 in case of success, -1 in case of failure. */ static int xenXMDomainDetachDeviceFlags(virDomainPtr domain, const char *xml, unsigned int flags) { const char *filename = NULL; xenXMConfCachePtr entry = NULL; virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def; int ret = -1; int i; xenUnifiedPrivatePtr priv; if ((!domain) || (!domain->conn) || (!domain->name) || (!xml)) { xenXMError(VIR_ERR_INVALID_ARG, __FUNCTION__); return -1; } if (domain->conn->flags & VIR_CONNECT_RO) return -1; if ((flags & VIR_DOMAIN_DEVICE_MODIFY_LIVE) || (domain->id != -1 && (flags & VIR_DOMAIN_DEVICE_MODIFY_CURRENT))) { xenXMError(VIR_ERR_OPERATION_INVALID, "%s", _("Xm driver only supports modifying persistent config")); return -1; } priv = (xenUnifiedPrivatePtr) domain->conn->privateData; xenUnifiedLock(priv); if (!(filename = virHashLookup(priv->nameConfigMap, domain->name))) goto cleanup; if (!(entry = virHashLookup(priv->configCache, filename))) goto cleanup; def = entry->def; if (!(dev = virDomainDeviceDefParse(priv->caps, entry->def, xml, VIR_DOMAIN_XML_INACTIVE))) goto cleanup; switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: { for (i = 0 ; i < def->ndisks ; i++) { if (def->disks[i]->dst && dev->data.disk->dst && STREQ(def->disks[i]->dst, dev->data.disk->dst)) { virDomainDiskDefFree(def->disks[i]); if (i < (def->ndisks - 1)) memmove(def->disks + i, def->disks + i + 1, sizeof(*def->disks) * (def->ndisks - (i + 1))); def->ndisks--; break; } } break; } case VIR_DOMAIN_DEVICE_NET: { for (i = 0 ; i < def->nnets ; i++) { if (!memcmp(def->nets[i]->mac, dev->data.net->mac, sizeof(def->nets[i]->mac))) { virDomainNetDefFree(def->nets[i]); if (i < (def->nnets - 1)) memmove(def->nets + i, def->nets + i + 1, sizeof(*def->nets) * (def->nnets - (i + 1))); def->nnets--; break; } } break; } default: xenXMError(VIR_ERR_XML_ERROR, "%s", _("unknown device")); goto cleanup; } /* If this fails, should we try to undo our changes to the * in-memory representation of the config file. I say not! */ if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0) goto cleanup; ret = 0; cleanup: virDomainDeviceDefFree(dev); xenUnifiedUnlock(priv); return (ret); } int xenXMDomainBlockPeek (virDomainPtr dom ATTRIBUTE_UNUSED, const char *path ATTRIBUTE_UNUSED, unsigned long long offset ATTRIBUTE_UNUSED, size_t size ATTRIBUTE_UNUSED, void *buffer ATTRIBUTE_UNUSED) { xenXMError(VIR_ERR_NO_SUPPORT, __FUNCTION__); return -1; } static char *xenXMAutostartLinkName(virDomainPtr dom) { char *ret; if (virAsprintf(&ret, "/etc/xen/auto/%s", dom->name) < 0) return NULL; return ret; } static char *xenXMDomainConfigName(virDomainPtr dom) { char *ret; if (virAsprintf(&ret, "/etc/xen/%s", dom->name) < 0) return NULL; return ret; } int xenXMDomainGetAutostart(virDomainPtr dom, int *autostart) { char *linkname = xenXMAutostartLinkName(dom); char *config = xenXMDomainConfigName(dom); int ret = -1; if (!linkname || !config) { virReportOOMError(); goto cleanup; } *autostart = virFileLinkPointsTo(linkname, config); if (*autostart < 0) { virReportSystemError(errno, _("cannot check link %s points to config %s"), linkname, config); goto cleanup; } ret = 0; cleanup: VIR_FREE(linkname); VIR_FREE(config); return ret; } int xenXMDomainSetAutostart(virDomainPtr dom, int autostart) { char *linkname = xenXMAutostartLinkName(dom); char *config = xenXMDomainConfigName(dom); int ret = -1; if (!linkname || !config) { virReportOOMError(); goto cleanup; } if (autostart) { if (symlink(config, linkname) < 0 && errno != EEXIST) { virReportSystemError(errno, _("failed to create link %s to %s"), config, linkname); goto cleanup; } } else { if (unlink(linkname) < 0 && errno != ENOENT) { virReportSystemError(errno, _("failed to remove link %s"), linkname); goto cleanup; } } ret = 0; cleanup: VIR_FREE(linkname); VIR_FREE(config); return ret; }