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3e4230d270
libvirt/src/uml/uml_driver.c
Peter Krempa 3e4230d270 conf: Add interface to parse and format memory device information 
This patch adds code that parses and formats configuration for memory
devices.

A simple configuration would be:
<memory model='dimm'>
  <target>
    <size unit='KiB'>524287</size>
    <node>0</node>
  </target>
</memory>

A complete configuration of a memory device:
<memory model='dimm'>
  <source>
    <pagesize unit='KiB'>4096</pagesize>
    <nodemask>1-3</nodemask>
  </source>
  <target>
    <size unit='KiB'>524287</size>
    <node>1</node>
  </target>
</memory>

This patch preemptively forbids use of the <memory> device in individual
drivers so the users are warned right away that the device is not
supported.
2015-03-23 14:25:15 +01:00

3070 lines
84 KiB
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/*
* uml_driver.c: core driver methods for managing UML guests
*
* Copyright (C) 2006-2015 Red Hat, Inc.
* Copyright (C) 2006-2008 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/poll.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <paths.h>
#include <pwd.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <sys/inotify.h>
#include <sys/un.h>
#include "uml_driver.h"
#include "uml_conf.h"
#include "virbuffer.h"
#include "nodeinfo.h"
#include "virstats.h"
#include "capabilities.h"
#include "viralloc.h"
#include "viruuid.h"
#include "domain_conf.h"
#include "domain_audit.h"
#include "datatypes.h"
#include "virlog.h"
#include "domain_nwfilter.h"
#include "nwfilter_conf.h"
#include "virfile.h"
#include "fdstream.h"
#include "configmake.h"
#include "virnetdevtap.h"
#include "virnodesuspend.h"
#include "virprocess.h"
#include "viruri.h"
#include "virstring.h"
#include "viraccessapicheck.h"
#define VIR_FROM_THIS VIR_FROM_UML
VIR_LOG_INIT("uml.uml_driver");
/* For storing short-lived temporary files. */
#define TEMPDIR LOCALSTATEDIR "/cache/libvirt"
typedef struct _umlDomainObjPrivate umlDomainObjPrivate;
typedef umlDomainObjPrivate *umlDomainObjPrivatePtr;
struct _umlDomainObjPrivate {
int monitor;
int monitorWatch;
};
static int umlProcessAutoDestroyInit(struct uml_driver *driver);
static void umlProcessAutoDestroyRun(struct uml_driver *driver,
virConnectPtr conn);
static void umlProcessAutoDestroyShutdown(struct uml_driver *driver);
static int umlProcessAutoDestroyAdd(struct uml_driver *driver,
virDomainObjPtr vm,
virConnectPtr conn);
static int umlProcessAutoDestroyRemove(struct uml_driver *driver,
virDomainObjPtr vm);
static int umlStateCleanup(void);
static void *umlDomainObjPrivateAlloc(void)
{
umlDomainObjPrivatePtr priv;
if (VIR_ALLOC(priv) < 0)
return NULL;
priv->monitor = -1;
priv->monitorWatch = -1;
return priv;
}
static void umlDomainObjPrivateFree(void *data)
{
umlDomainObjPrivatePtr priv = data;
VIR_FREE(priv);
}
static void umlDriverLock(struct uml_driver *driver)
{
virMutexLock(&driver->lock);
}
static void umlDriverUnlock(struct uml_driver *driver)
{
virMutexUnlock(&driver->lock);
}
static int umlOpenMonitor(struct uml_driver *driver,
virDomainObjPtr vm);
static int umlReadPidFile(struct uml_driver *driver,
virDomainObjPtr vm);
static void umlDomainEventQueue(struct uml_driver *driver,
virObjectEventPtr event);
static int umlStartVMDaemon(virConnectPtr conn,
struct uml_driver *driver,
virDomainObjPtr vm,
bool autoDestroy);
static void umlShutdownVMDaemon(struct uml_driver *driver,
virDomainObjPtr vm,
virDomainShutoffReason reason);
static int umlMonitorCommand(const struct uml_driver *driver,
const virDomainObj *vm,
const char *cmd,
char **reply);
static struct uml_driver *uml_driver;
static int
umlVMFilterRebuild(virDomainObjListIterator iter, void *data)
{
return virDomainObjListForEach(uml_driver->domains, iter, data);
}
static void
umlVMDriverLock(void)
{
umlDriverLock(uml_driver);
}
static void
umlVMDriverUnlock(void)
{
umlDriverUnlock(uml_driver);
}
static virNWFilterCallbackDriver umlCallbackDriver = {
.name = "UML",
.vmFilterRebuild = umlVMFilterRebuild,
.vmDriverLock = umlVMDriverLock,
.vmDriverUnlock = umlVMDriverUnlock,
};
struct umlAutostartData {
struct uml_driver *driver;
virConnectPtr conn;
};
static int
umlAutostartDomain(virDomainObjPtr vm,
void *opaque)
{
const struct umlAutostartData *data = opaque;
int ret = 0;
virObjectLock(vm);
if (vm->autostart &&
!virDomainObjIsActive(vm)) {
virResetLastError();
ret = umlStartVMDaemon(data->conn, data->driver, vm, false);
virDomainAuditStart(vm, "booted", ret >= 0);
if (ret < 0) {
virErrorPtr err = virGetLastError();
VIR_ERROR(_("Failed to autostart VM '%s': %s"),
vm->def->name, err ? err->message : _("unknown error"));
} else {
virObjectEventPtr event =
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_BOOTED);
if (event)
umlDomainEventQueue(data->driver, event);
}
}
virObjectUnlock(vm);
return ret;
}
static void
umlAutostartConfigs(struct uml_driver *driver)
{
/* XXX: Figure out a better way todo this. The domain
* startup code needs a connection handle in order
* to lookup the bridge associated with a virtual
* network
*/
virConnectPtr conn = virConnectOpen(driver->privileged ?
"uml:///system" :
"uml:///session");
/* Ignoring NULL conn which is mostly harmless here */
struct umlAutostartData data = { driver, conn };
umlDriverLock(driver);
virDomainObjListForEach(driver->domains, umlAutostartDomain, &data);
umlDriverUnlock(driver);
virObjectUnref(conn);
}
static int
umlIdentifyOneChrPTY(struct uml_driver *driver,
virDomainObjPtr dom,
virDomainChrDefPtr def,
const char *dev)
{
char *cmd;
char *res = NULL;
int retries = 0;
if (virAsprintf(&cmd, "config %s%d", dev, def->target.port) < 0)
return -1;
requery:
if (umlMonitorCommand(driver, dom, cmd, &res) < 0)
return -1;
if (res && STRPREFIX(res, "pts:")) {
VIR_FREE(def->source.data.file.path);
if (VIR_STRDUP(def->source.data.file.path, res + 4) < 0) {
VIR_FREE(res);
VIR_FREE(cmd);
return -1;
}
} else if (!res || STRPREFIX(res, "pts")) {
/* It can take a while to startup, so retry for
up to 5 seconds */
/* XXX should do this in a better non-blocking
way somehow ...perhaps register a timer */
if (retries++ < 50) {
VIR_FREE(res);
usleep(1000*10);
goto requery;
}
}
VIR_FREE(cmd);
VIR_FREE(res);
return 0;
}
static int
umlIdentifyChrPTY(struct uml_driver *driver,
virDomainObjPtr dom)
{
size_t i;
for (i = 0; i < dom->def->nconsoles; i++)
if (dom->def->consoles[i]->source.type == VIR_DOMAIN_CHR_TYPE_PTY)
if (umlIdentifyOneChrPTY(driver, dom,
dom->def->consoles[i], "con") < 0)
return -1;
for (i = 0; i < dom->def->nserials; i++)
if (dom->def->serials[i]->source.type == VIR_DOMAIN_CHR_TYPE_PTY &&
umlIdentifyOneChrPTY(driver, dom,
dom->def->serials[i], "ssl") < 0)
return -1;
return 0;
}
static void
umlInotifyEvent(int watch,
int fd,
int events ATTRIBUTE_UNUSED,
void *data)
{
char buf[1024];
struct inotify_event e;
int got;
char *tmp, *name;
struct uml_driver *driver = data;
virDomainObjPtr dom;
virObjectEventPtr event = NULL;
umlDriverLock(driver);
if (watch != driver->inotifyWatch)
goto cleanup;
reread:
got = read(fd, buf, sizeof(buf));
if (got == -1) {
if (errno == EINTR)
goto reread;
goto cleanup;
}
tmp = buf;
while (got) {
if (got < sizeof(e))
goto cleanup; /* bad */
memcpy(&e, tmp, sizeof(e));
tmp += sizeof(e);
got -= sizeof(e);
if (got < e.len)
goto cleanup;
tmp += e.len;
got -= e.len;
name = (char *)&(e.name);
dom = virDomainObjListFindByName(driver->domains, name);
if (!dom)
continue;
if (e.mask & IN_DELETE) {
VIR_DEBUG("Got inotify domain shutdown '%s'", name);
if (!virDomainObjIsActive(dom)) {
virObjectUnlock(dom);
continue;
}
umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN);
virDomainAuditStop(dom, "shutdown");
event = virDomainEventLifecycleNewFromObj(dom,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN);
if (!dom->persistent) {
virDomainObjListRemove(driver->domains,
dom);
dom = NULL;
}
} else if (e.mask & (IN_CREATE | IN_MODIFY)) {
VIR_DEBUG("Got inotify domain startup '%s'", name);
if (virDomainObjIsActive(dom)) {
virObjectUnlock(dom);
continue;
}
if (umlReadPidFile(driver, dom) < 0) {
virObjectUnlock(dom);
continue;
}
dom->def->id = driver->nextvmid++;
if (!driver->nactive && driver->inhibitCallback)
driver->inhibitCallback(true, driver->inhibitOpaque);
driver->nactive++;
virDomainObjSetState(dom, VIR_DOMAIN_RUNNING,
VIR_DOMAIN_RUNNING_BOOTED);
if (umlOpenMonitor(driver, dom) < 0) {
VIR_WARN("Could not open monitor for new domain");
umlShutdownVMDaemon(driver, dom,
VIR_DOMAIN_SHUTOFF_FAILED);
virDomainAuditStop(dom, "failed");
event = virDomainEventLifecycleNewFromObj(dom,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_FAILED);
if (!dom->persistent) {
virDomainObjListRemove(driver->domains,
dom);
dom = NULL;
}
} else if (umlIdentifyChrPTY(driver, dom) < 0) {
VIR_WARN("Could not identify character devices for new domain");
umlShutdownVMDaemon(driver, dom,
VIR_DOMAIN_SHUTOFF_FAILED);
virDomainAuditStop(dom, "failed");
event = virDomainEventLifecycleNewFromObj(dom,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_FAILED);
if (!dom->persistent) {
virDomainObjListRemove(driver->domains,
dom);
dom = NULL;
}
}
}
if (dom)
virObjectUnlock(dom);
if (event) {
umlDomainEventQueue(driver, event);
event = NULL;
}
}
cleanup:
umlDriverUnlock(driver);
}
static int
umlDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
const virDomainDef *def ATTRIBUTE_UNUSED,
virCapsPtr caps ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
if (dev->type == VIR_DOMAIN_DEVICE_CHR &&
dev->data.chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE &&
dev->data.chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_NONE)
dev->data.chr->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_UML;
/* forbid capabilities mode hostdev in this kind of hypervisor */
if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV &&
dev->data.hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("hostdev mode 'capabilities' is not "
"supported in %s"),
virDomainVirtTypeToString(def->virtType));
return -1;
}
if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0)
return -1;
return 0;
}
static int
umlDomainDefPostParse(virDomainDefPtr def,
virCapsPtr caps ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
/* memory hotplug tunables are not supported by this driver */
if (virDomainDefCheckUnsupportedMemoryHotplug(def) < 0)
return -1;
return 0;
}
virDomainDefParserConfig umlDriverDomainDefParserConfig = {
.devicesPostParseCallback = umlDomainDeviceDefPostParse,
.domainPostParseCallback = umlDomainDefPostParse,
};
/**
* umlStartup:
*
* Initialization function for the Uml daemon
*/
static int
umlStateInitialize(bool privileged,
virStateInhibitCallback callback,
void *opaque)
{
char *base = NULL;
char *userdir = NULL;
virDomainXMLPrivateDataCallbacks privcb = {
.alloc = umlDomainObjPrivateAlloc,
.free = umlDomainObjPrivateFree,
};
if (VIR_ALLOC(uml_driver) < 0)
return -1;
uml_driver->privileged = privileged;
uml_driver->inhibitCallback = callback;
uml_driver->inhibitOpaque = opaque;
if (virMutexInit(&uml_driver->lock) < 0) {
VIR_FREE(uml_driver);
return -1;
}
umlDriverLock(uml_driver);
/* Don't have a dom0 so start from 1 */
uml_driver->nextvmid = 1;
uml_driver->inotifyWatch = -1;
if (!(uml_driver->domains = virDomainObjListNew()))
goto error;
uml_driver->domainEventState = virObjectEventStateNew();
if (!uml_driver->domainEventState)
goto error;
userdir = virGetUserDirectory();
if (!userdir)
goto error;
if (privileged) {
if (virAsprintf(&uml_driver->logDir,
"%s/log/libvirt/uml", LOCALSTATEDIR) == -1)
goto out_of_memory;
if (VIR_STRDUP(base, SYSCONFDIR "/libvirt") < 0)
goto error;
if (virAsprintf(&uml_driver->monitorDir,
"%s/run/libvirt/uml-guest", LOCALSTATEDIR) == -1)
goto out_of_memory;
} else {
base = virGetUserConfigDirectory();
if (!base)
goto error;
if (virAsprintf(&uml_driver->logDir,
"%s/uml/log", base) == -1)
goto out_of_memory;
if (virAsprintf(&uml_driver->monitorDir,
"%s/.uml", userdir) == -1)
goto out_of_memory;
}
/* Configuration paths are either $XDG_CONFIG_HOME/libvirt/uml/... (session) or
* /etc/libvirt/uml/... (system).
*/
if (virAsprintf(&uml_driver->configDir, "%s/uml", base) == -1)
goto out_of_memory;
if (virAsprintf(&uml_driver->autostartDir, "%s/uml/autostart", base) == -1)
goto out_of_memory;
VIR_FREE(base);
if ((uml_driver->caps = umlCapsInit()) == NULL)
goto out_of_memory;
if (!(uml_driver->xmlopt = virDomainXMLOptionNew(&umlDriverDomainDefParserConfig,
&privcb, NULL)))
goto error;
if ((uml_driver->inotifyFD = inotify_init()) < 0) {
VIR_ERROR(_("cannot initialize inotify"));
goto error;
}
if (virFileMakePath(uml_driver->monitorDir) < 0) {
char ebuf[1024];
VIR_ERROR(_("Failed to create monitor directory %s: %s"),
uml_driver->monitorDir,
virStrerror(errno, ebuf, sizeof(ebuf)));
goto error;
}
VIR_INFO("Adding inotify watch on %s", uml_driver->monitorDir);
if (inotify_add_watch(uml_driver->inotifyFD,
uml_driver->monitorDir,
IN_CREATE | IN_MODIFY | IN_DELETE) < 0) {
char ebuf[1024];
VIR_ERROR(_("Failed to create inotify watch on %s: %s"),
uml_driver->monitorDir,
virStrerror(errno, ebuf, sizeof(ebuf)));
goto error;
}
if ((uml_driver->inotifyWatch =
virEventAddHandle(uml_driver->inotifyFD, POLLIN,
umlInotifyEvent, uml_driver, NULL)) < 0)
goto error;
if (umlProcessAutoDestroyInit(uml_driver) < 0)
goto error;
if (virDomainObjListLoadAllConfigs(uml_driver->domains,
uml_driver->configDir,
uml_driver->autostartDir, 0,
uml_driver->caps,
uml_driver->xmlopt,
1 << VIR_DOMAIN_VIRT_UML,
NULL, NULL) < 0)
goto error;
umlDriverUnlock(uml_driver);
VIR_FREE(userdir);
virNWFilterRegisterCallbackDriver(&umlCallbackDriver);
return 0;
out_of_memory:
VIR_ERROR(_("umlStartup: out of memory"));
error:
VIR_FREE(userdir);
VIR_FREE(base);
umlDriverUnlock(uml_driver);
umlStateCleanup();
return -1;
}
/**
* umlStateAutoStart:
*
* Function to autostart the Uml daemons
*/
static void
umlStateAutoStart(void)
{
if (!uml_driver)
return;
umlAutostartConfigs(uml_driver);
}
static void umlNotifyLoadDomain(virDomainObjPtr vm, int newVM, void *opaque)
{
struct uml_driver *driver = opaque;
if (newVM) {
virObjectEventPtr event =
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
VIR_DOMAIN_EVENT_DEFINED_ADDED);
if (event)
umlDomainEventQueue(driver, event);
}
}
/**
* umlStateReload:
*
* Function to restart the Uml daemon, it will recheck the configuration
* files and update its state and the networking
*/
static int
umlStateReload(void)
{
if (!uml_driver)
return 0;
umlDriverLock(uml_driver);
virDomainObjListLoadAllConfigs(uml_driver->domains,
uml_driver->configDir,
uml_driver->autostartDir, 0,
uml_driver->caps,
uml_driver->xmlopt,
1 << VIR_DOMAIN_VIRT_UML,
umlNotifyLoadDomain, uml_driver);
umlDriverUnlock(uml_driver);
return 0;
}
static int
umlShutdownOneVM(virDomainObjPtr dom, void *opaque)
{
struct uml_driver *driver = opaque;
virObjectLock(dom);
if (virDomainObjIsActive(dom)) {
umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN);
virDomainAuditStop(dom, "shutdown");
}
virObjectUnlock(dom);
return 0;
}
/**
* umlStateCleanup:
*
* Shutdown the Uml daemon, it will stop all active domains and networks
*/
static int
umlStateCleanup(void)
{
if (!uml_driver)
return -1;
umlDriverLock(uml_driver);
virNWFilterRegisterCallbackDriver(&umlCallbackDriver);
if (uml_driver->inotifyWatch != -1)
virEventRemoveHandle(uml_driver->inotifyWatch);
VIR_FORCE_CLOSE(uml_driver->inotifyFD);
virObjectUnref(uml_driver->caps);
virObjectUnref(uml_driver->xmlopt);
/* shutdown active VMs
* XXX allow them to stay around & reconnect */
virDomainObjListForEach(uml_driver->domains, umlShutdownOneVM, uml_driver);
virObjectUnref(uml_driver->domains);
virObjectEventStateFree(uml_driver->domainEventState);
VIR_FREE(uml_driver->logDir);
VIR_FREE(uml_driver->configDir);
VIR_FREE(uml_driver->autostartDir);
VIR_FREE(uml_driver->monitorDir);
umlProcessAutoDestroyShutdown(uml_driver);
umlDriverUnlock(uml_driver);
virMutexDestroy(&uml_driver->lock);
VIR_FREE(uml_driver);
return 0;
}
static int umlProcessAutoDestroyInit(struct uml_driver *driver)
{
if (!(driver->autodestroy = virHashCreate(5, NULL)))
return -1;
return 0;
}
struct umlProcessAutoDestroyData {
struct uml_driver *driver;
virConnectPtr conn;
};
static void umlProcessAutoDestroyDom(void *payload,
const void *name,
void *opaque)
{
struct umlProcessAutoDestroyData *data = opaque;
virConnectPtr conn = payload;
const char *uuidstr = name;
unsigned char uuid[VIR_UUID_BUFLEN];
virDomainObjPtr dom;
virObjectEventPtr event = NULL;
VIR_DEBUG("conn=%p uuidstr=%s thisconn=%p", conn, uuidstr, data->conn);
if (data->conn != conn)
return;
if (virUUIDParse(uuidstr, uuid) < 0) {
VIR_WARN("Failed to parse %s", uuidstr);
return;
}
if (!(dom = virDomainObjListFindByUUID(data->driver->domains,
uuid))) {
VIR_DEBUG("No domain object to kill");
return;
}
VIR_DEBUG("Killing domain");
umlShutdownVMDaemon(data->driver, dom, VIR_DOMAIN_SHUTOFF_DESTROYED);
virDomainAuditStop(dom, "destroyed");
event = virDomainEventLifecycleNewFromObj(dom,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_DESTROYED);
if (dom && !dom->persistent)
virDomainObjListRemove(data->driver->domains, dom);
if (dom)
virObjectUnlock(dom);
if (event)
umlDomainEventQueue(data->driver, event);
virHashRemoveEntry(data->driver->autodestroy, uuidstr);
}
/*
* Precondition: driver is locked
*/
static void umlProcessAutoDestroyRun(struct uml_driver *driver, virConnectPtr conn)
{
struct umlProcessAutoDestroyData data = {
driver, conn
};
VIR_DEBUG("conn=%p", conn);
virHashForEach(driver->autodestroy, umlProcessAutoDestroyDom, &data);
}
static void umlProcessAutoDestroyShutdown(struct uml_driver *driver)
{
virHashFree(driver->autodestroy);
}
static int umlProcessAutoDestroyAdd(struct uml_driver *driver,
virDomainObjPtr vm,
virConnectPtr conn)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
VIR_DEBUG("vm=%s uuid=%s conn=%p", vm->def->name, uuidstr, conn);
if (virHashAddEntry(driver->autodestroy, uuidstr, conn) < 0)
return -1;
return 0;
}
static int umlProcessAutoDestroyRemove(struct uml_driver *driver,
virDomainObjPtr vm)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
VIR_DEBUG("vm=%s uuid=%s", vm->def->name, uuidstr);
if (virHashRemoveEntry(driver->autodestroy, uuidstr) < 0)
return -1;
return 0;
}
static int umlReadPidFile(struct uml_driver *driver,
virDomainObjPtr vm)
{
int rc = -1;
FILE *file;
char *pidfile = NULL;
int retries = 0;
vm->pid = -1;
if (virAsprintf(&pidfile, "%s/%s/pid",
driver->monitorDir, vm->def->name) < 0)
return -1;
reopen:
if (!(file = fopen(pidfile, "r"))) {
if (errno == ENOENT &&
retries++ < 50) {
usleep(1000 * 100);
goto reopen;
}
goto cleanup;
}
if (fscanf(file, "%d", &vm->pid) != 1) {
errno = EINVAL;
VIR_FORCE_FCLOSE(file);
goto cleanup;
}
if (VIR_FCLOSE(file) < 0)
goto cleanup;
rc = 0;
cleanup:
if (rc != 0)
virReportSystemError(errno,
_("failed to read pid: %s"),
pidfile);
VIR_FREE(pidfile);
return rc;
}
static int umlMonitorAddress(const struct uml_driver *driver,
const virDomainObj *vm,
struct sockaddr_un *addr)
{
char *sockname;
int retval = 0;
if (virAsprintf(&sockname, "%s/%s/mconsole",
driver->monitorDir, vm->def->name) < 0)
return -1;
memset(addr, 0, sizeof(*addr));
addr->sun_family = AF_UNIX;
if (virStrcpyStatic(addr->sun_path, sockname) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unix path %s too long for destination"), sockname);
retval = -1;
}
VIR_FREE(sockname);
return retval;
}
static int umlOpenMonitor(struct uml_driver *driver,
virDomainObjPtr vm)
{
struct sockaddr_un addr;
struct stat sb;
int retries = 0;
umlDomainObjPrivatePtr priv = vm->privateData;
if (umlMonitorAddress(driver, vm, &addr) < 0)
return -1;
VIR_DEBUG("Dest address for monitor is '%s'", addr.sun_path);
restat:
if (stat(addr.sun_path, &sb) < 0) {
if (errno == ENOENT &&
retries++ < 50) {
usleep(1000 * 100);
goto restat;
}
return -1;
}
if ((priv->monitor = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0) {
virReportSystemError(errno,
"%s", _("cannot open socket"));
return -1;
}
memset(addr.sun_path, 0, sizeof(addr.sun_path));
snprintf(addr.sun_path + 1, sizeof(addr.sun_path) - 1,
"libvirt-uml-%u", vm->pid);
VIR_DEBUG("Reply address for monitor is '%s'", addr.sun_path+1);
if (bind(priv->monitor, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
virReportSystemError(errno,
"%s", _("cannot bind socket"));
VIR_FORCE_CLOSE(priv->monitor);
return -1;
}
return 0;
}
#define MONITOR_MAGIC 0xcafebabe
#define MONITOR_BUFLEN 512
#define MONITOR_VERSION 2
struct monitor_request {
uint32_t magic;
uint32_t version;
uint32_t length;
char data[MONITOR_BUFLEN];
};
struct monitor_response {
uint32_t error;
uint32_t extra;
uint32_t length;
char data[MONITOR_BUFLEN];
};
static int umlMonitorCommand(const struct uml_driver *driver,
const virDomainObj *vm,
const char *cmd,
char **reply)
{
struct monitor_request req;
struct monitor_response res;
char *retdata = NULL;
int retlen = 0, ret = 0;
struct sockaddr_un addr;
unsigned int addrlen;
umlDomainObjPrivatePtr priv = vm->privateData;
VIR_DEBUG("Run command '%s'", cmd);
*reply = NULL;
if (umlMonitorAddress(driver, vm, &addr) < 0)
return -1;
memset(&req, 0, sizeof(req));
req.magic = MONITOR_MAGIC;
req.version = MONITOR_VERSION;
req.length = strlen(cmd);
if (req.length > (MONITOR_BUFLEN-1)) {
virReportSystemError(EINVAL,
_("cannot send too long command %s (%d bytes)"),
cmd, req.length);
return -1;
}
if (virStrcpyStatic(req.data, cmd) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Command %s too long for destination"), cmd);
return -1;
}
if (sendto(priv->monitor, &req, sizeof(req), 0,
(struct sockaddr *)&addr, sizeof(addr)) != sizeof(req)) {
virReportSystemError(errno,
_("cannot send command %s"),
cmd);
return -1;
}
do {
ssize_t nbytes;
addrlen = sizeof(addr);
nbytes = recvfrom(priv->monitor, &res, sizeof(res), 0,
(struct sockaddr *)&addr, &addrlen);
if (nbytes < 0) {
if (errno == EAGAIN || errno == EINTR)
continue;
virReportSystemError(errno, _("cannot read reply %s"), cmd);
goto error;
}
/* Ensure res.length is safe to read before validating its value. */
if (nbytes < offsetof(struct monitor_request, data) ||
nbytes < offsetof(struct monitor_request, data) + res.length) {
virReportSystemError(0, _("incomplete reply %s"), cmd);
goto error;
}
if (VIR_REALLOC_N(retdata, retlen + res.length) < 0)
goto error;
memcpy(retdata + retlen, res.data, res.length);
retlen += res.length - 1;
retdata[retlen] = '\0';
if (res.error)
ret = -1;
} while (res.extra);
VIR_DEBUG("Command reply is '%s'", NULLSTR(retdata));
if (ret < 0)
VIR_FREE(retdata);
else
*reply = retdata;
return ret;
error:
VIR_FREE(retdata);
return -1;
}
static void umlCleanupTapDevices(virDomainObjPtr vm)
{
size_t i;
for (i = 0; i < vm->def->nnets; i++) {
virDomainNetDefPtr def = vm->def->nets[i];
if (def->type != VIR_DOMAIN_NET_TYPE_BRIDGE &&
def->type != VIR_DOMAIN_NET_TYPE_NETWORK)
continue;
ignore_value(virNetDevTapDelete(def->ifname,
def->backend.tap));
}
}
static int umlStartVMDaemon(virConnectPtr conn,
struct uml_driver *driver,
virDomainObjPtr vm,
bool autoDestroy)
{
int ret = -1;
char *logfile;
int logfd = -1;
umlDomainObjPrivatePtr priv = vm->privateData;
virCommandPtr cmd = NULL;
size_t i;
if (virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("VM is already active"));
return -1;
}
if (!vm->def->os.kernel) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("no kernel specified"));
return -1;
}
/* Make sure the binary we are about to try exec'ing exists.
* Technically we could catch the exec() failure, but that's
* in a sub-process so its hard to feed back a useful error
*/
if (!virFileIsExecutable(vm->def->os.kernel)) {
virReportSystemError(errno,
_("Cannot find UML kernel %s"),
vm->def->os.kernel);
return -1;
}
if (virFileMakePath(driver->logDir) < 0) {
virReportSystemError(errno,
_("cannot create log directory %s"),
driver->logDir);
return -1;
}
if (virAsprintf(&logfile, "%s/%s.log",
driver->logDir, vm->def->name) < 0)
return -1;
if ((logfd = open(logfile, O_CREAT | O_TRUNC | O_WRONLY,
S_IRUSR | S_IWUSR)) < 0) {
virReportSystemError(errno,
_("failed to create logfile %s"),
logfile);
VIR_FREE(logfile);
return -1;
}
VIR_FREE(logfile);
if (virSetCloseExec(logfd) < 0) {
virReportSystemError(errno, "%s",
_("Unable to set VM logfile close-on-exec flag"));
VIR_FORCE_CLOSE(logfd);
return -1;
}
/* Do this upfront, so any part of the startup process can add
* runtime state to vm->def that won't be persisted. This let's us
* report implicit runtime defaults in the XML, like vnc listen/socket
*/
VIR_DEBUG("Setting current domain def as transient");
if (virDomainObjSetDefTransient(driver->caps, driver->xmlopt,
vm, true) < 0) {
VIR_FORCE_CLOSE(logfd);
return -1;
}
if (!(cmd = umlBuildCommandLine(conn, driver, vm)))
goto cleanup;
for (i = 0; i < vm->def->nconsoles; i++) {
VIR_FREE(vm->def->consoles[i]->info.alias);
if (virAsprintf(&vm->def->consoles[i]->info.alias, "console%zu", i) < 0)
goto cleanup;
}
virCommandWriteArgLog(cmd, logfd);
priv->monitor = -1;
virCommandClearCaps(cmd);
virCommandSetOutputFD(cmd, &logfd);
virCommandSetErrorFD(cmd, &logfd);
virCommandDaemonize(cmd);
ret = virCommandRun(cmd, NULL);
if (ret < 0)
goto cleanup;
if (autoDestroy &&
(ret = umlProcessAutoDestroyAdd(driver, vm, conn)) < 0)
goto cleanup;
ret = virDomainObjSetDefTransient(driver->caps, driver->xmlopt, vm, false);
cleanup:
VIR_FORCE_CLOSE(logfd);
virCommandFree(cmd);
if (ret < 0) {
virDomainConfVMNWFilterTeardown(vm);
umlCleanupTapDevices(vm);
if (vm->newDef) {
virDomainDefFree(vm->def);
vm->def = vm->newDef;
vm->def->id = -1;
vm->newDef = NULL;
}
}
/* NB we don't mark it running here - we do that async
with inotify */
/* XXX what if someone else tries to start it again
before we get the inotification ? Sounds like
trouble.... */
/* XXX this is bad for events too. must fix this better */
return ret;
}
static void umlShutdownVMDaemon(struct uml_driver *driver,
virDomainObjPtr vm,
virDomainShutoffReason reason)
{
int ret;
umlDomainObjPrivatePtr priv = vm->privateData;
if (!virDomainObjIsActive(vm))
return;
virProcessKill(vm->pid, SIGTERM);
VIR_FORCE_CLOSE(priv->monitor);
if ((ret = waitpid(vm->pid, NULL, 0)) != vm->pid) {
VIR_WARN("Got unexpected pid %d != %d",
ret, vm->pid);
}
vm->pid = -1;
vm->def->id = -1;
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, reason);
virDomainConfVMNWFilterTeardown(vm);
umlCleanupTapDevices(vm);
/* Stop autodestroy in case guest is restarted */
umlProcessAutoDestroyRemove(driver, vm);
if (vm->newDef) {
virDomainDefFree(vm->def);
vm->def = vm->newDef;
vm->def->id = -1;
vm->newDef = NULL;
}
driver->nactive--;
if (!driver->nactive && driver->inhibitCallback)
driver->inhibitCallback(false, driver->inhibitOpaque);
}
static virDrvOpenStatus umlConnectOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
unsigned int flags)
{
virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
if (conn->uri == NULL) {
if (uml_driver == NULL)
return VIR_DRV_OPEN_DECLINED;
if (!(conn->uri = virURIParse(uml_driver->privileged ?
"uml:///system" :
"uml:///session")))
return VIR_DRV_OPEN_ERROR;
} else {
if (conn->uri->scheme == NULL ||
STRNEQ(conn->uri->scheme, "uml"))
return VIR_DRV_OPEN_DECLINED;
/* Allow remote driver to deal with URIs with hostname server */
if (conn->uri->server != NULL)
return VIR_DRV_OPEN_DECLINED;
/* Check path and tell them correct path if they made a mistake */
if (uml_driver->privileged) {
if (STRNEQ(conn->uri->path, "/system") &&
STRNEQ(conn->uri->path, "/session")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected UML URI path '%s', try uml:///system"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
} else {
if (STRNEQ(conn->uri->path, "/session")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected UML URI path '%s', try uml:///session"),
conn->uri->path);
return VIR_DRV_OPEN_ERROR;
}
}
/* URI was good, but driver isn't active */
if (uml_driver == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("uml state driver is not active"));
return VIR_DRV_OPEN_ERROR;
}
}
if (virConnectOpenEnsureACL(conn) < 0)
return VIR_DRV_OPEN_ERROR;
conn->privateData = uml_driver;
return VIR_DRV_OPEN_SUCCESS;
}
static int umlConnectClose(virConnectPtr conn)
{
struct uml_driver *driver = conn->privateData;
umlDriverLock(driver);
umlProcessAutoDestroyRun(driver, conn);
umlDriverUnlock(driver);
conn->privateData = NULL;
return 0;
}
static const char *umlConnectGetType(virConnectPtr conn) {
if (virConnectGetTypeEnsureACL(conn) < 0)
return NULL;
return "UML";
}
static int umlConnectIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Trivially secure, since always inside the daemon */
return 1;
}
static int umlConnectIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Not encrypted, but remote driver takes care of that */
return 0;
}
static int umlConnectIsAlive(virConnectPtr conn ATTRIBUTE_UNUSED)
{
return 1;
}
static char *umlConnectGetCapabilities(virConnectPtr conn) {
struct uml_driver *driver = (struct uml_driver *)conn->privateData;
char *xml;
if (virConnectGetCapabilitiesEnsureACL(conn) < 0)
return NULL;
umlDriverLock(driver);
xml = virCapabilitiesFormatXML(driver->caps);
umlDriverUnlock(driver);
return xml;
}
static int umlGetProcessInfo(unsigned long long *cpuTime, pid_t pid)
{
char *proc;
FILE *pidinfo;
unsigned long long usertime, systime;
if (virAsprintf(&proc, "/proc/%lld/stat", (long long) pid) < 0)
return -1;
if (!(pidinfo = fopen(proc, "r"))) {
/* VM probably shut down, so fake 0 */
*cpuTime = 0;
VIR_FREE(proc);
return 0;
}
VIR_FREE(proc);
if (fscanf(pidinfo, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %llu %llu", &usertime, &systime) != 2) {
umlDebug("not enough arg");
VIR_FORCE_FCLOSE(pidinfo);
return -1;
}
/* We got jiffies
* We want nanoseconds
* _SC_CLK_TCK is jiffies per second
* So calculate thus....
*/
*cpuTime = 1000ull * 1000ull * 1000ull * (usertime + systime) / (unsigned long long)sysconf(_SC_CLK_TCK);
umlDebug("Got %llu %llu %llu", usertime, systime, *cpuTime);
VIR_FORCE_FCLOSE(pidinfo);
return 0;
}
static virDomainPtr umlDomainLookupByID(virConnectPtr conn,
int id)
{
struct uml_driver *driver = (struct uml_driver *)conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
umlDriverLock(driver);
vm = virDomainObjListFindByID(driver->domains, id);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainLookupByIDEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom) dom->id = vm->def->id;
cleanup:
if (vm)
virObjectUnlock(vm);
return dom;
}
static virDomainPtr umlDomainLookupByUUID(virConnectPtr conn,
const unsigned char *uuid)
{
struct uml_driver *driver = (struct uml_driver *)conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainLookupByUUIDEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom) dom->id = vm->def->id;
cleanup:
if (vm)
virObjectUnlock(vm);
return dom;
}
static virDomainPtr umlDomainLookupByName(virConnectPtr conn,
const char *name)
{
struct uml_driver *driver = (struct uml_driver *)conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
umlDriverLock(driver);
vm = virDomainObjListFindByName(driver->domains, name);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainLookupByNameEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom) dom->id = vm->def->id;
cleanup:
if (vm)
virObjectUnlock(vm);
return dom;
}
static int umlDomainIsActive(virDomainPtr dom)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr obj;
int ret = -1;
umlDriverLock(driver);
obj = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!obj) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainIsActiveEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = virDomainObjIsActive(obj);
cleanup:
if (obj)
virObjectUnlock(obj);
return ret;
}
static int umlDomainIsPersistent(virDomainPtr dom)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr obj;
int ret = -1;
umlDriverLock(driver);
obj = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!obj) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainIsPersistentEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = obj->persistent;
cleanup:
if (obj)
virObjectUnlock(obj);
return ret;
}
static int umlDomainIsUpdated(virDomainPtr dom)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr obj;
int ret = -1;
umlDriverLock(driver);
obj = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!obj) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainIsUpdatedEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = obj->updated;
cleanup:
if (obj)
virObjectUnlock(obj);
return ret;
}
static int umlConnectGetVersion(virConnectPtr conn, unsigned long *version)
{
struct uml_driver *driver = conn->privateData;
struct utsname ut;
int ret = -1;
if (virConnectGetVersionEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
if (driver->umlVersion == 0) {
uname(&ut);
if (virParseVersionString(ut.release, &driver->umlVersion, true) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot parse version %s"), ut.release);
goto cleanup;
}
}
*version = driver->umlVersion;
ret = 0;
cleanup:
umlDriverUnlock(driver);
return ret;
}
static char *umlConnectGetHostname(virConnectPtr conn)
{
if (virConnectGetHostnameEnsureACL(conn) < 0)
return NULL;
return virGetHostname();
}
static int umlConnectListDomains(virConnectPtr conn, int *ids, int nids)
{
struct uml_driver *driver = conn->privateData;
int n;
if (virConnectListDomainsEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
n = virDomainObjListGetActiveIDs(driver->domains, ids, nids,
virConnectListDomainsCheckACL, conn);
umlDriverUnlock(driver);
return n;
}
static int umlConnectNumOfDomains(virConnectPtr conn)
{
struct uml_driver *driver = conn->privateData;
int n;
if (virConnectNumOfDomainsEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
n = virDomainObjListNumOfDomains(driver->domains, true,
virConnectNumOfDomainsCheckACL, conn);
umlDriverUnlock(driver);
return n;
}
static virDomainPtr umlDomainCreateXML(virConnectPtr conn, const char *xml,
unsigned int flags)
{
struct uml_driver *driver = conn->privateData;
virDomainDefPtr def;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
virObjectEventPtr event = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE;
virCheckFlags(VIR_DOMAIN_START_AUTODESTROY |
VIR_DOMAIN_START_VALIDATE, NULL);
if (flags & VIR_DOMAIN_START_VALIDATE)
parse_flags |= VIR_DOMAIN_DEF_PARSE_VALIDATE;
virNWFilterReadLockFilterUpdates();
umlDriverLock(driver);
if (!(def = virDomainDefParseString(xml, driver->caps, driver->xmlopt,
1 << VIR_DOMAIN_VIRT_UML,
parse_flags)))
goto cleanup;
if (virDomainCreateXMLEnsureACL(conn, def) < 0)
goto cleanup;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_CHECK_LIVE,
NULL)))
goto cleanup;
def = NULL;
if (umlStartVMDaemon(conn, driver, vm,
(flags & VIR_DOMAIN_START_AUTODESTROY)) < 0) {
virDomainAuditStart(vm, "booted", false);
virDomainObjListRemove(driver->domains,
vm);
vm = NULL;
goto cleanup;
}
virDomainAuditStart(vm, "booted", true);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_BOOTED);
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom) dom->id = vm->def->id;
cleanup:
virDomainDefFree(def);
if (vm)
virObjectUnlock(vm);
if (event)
umlDomainEventQueue(driver, event);
umlDriverUnlock(driver);
virNWFilterUnlockFilterUpdates();
return dom;
}
static int umlDomainShutdownFlags(virDomainPtr dom,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *info = NULL;
int ret = -1;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByID(driver->domains, dom->id);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching id %d"), dom->id);
goto cleanup;
}
if (virDomainShutdownFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
#if 0
if (umlMonitorCommand(driver, vm, "system_powerdown", &info) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("shutdown operation failed"));
goto cleanup;
}
ret = 0;
#endif
cleanup:
VIR_FREE(info);
if (vm)
virObjectUnlock(vm);
return ret;
}
static int
umlDomainShutdown(virDomainPtr dom)
{
return umlDomainShutdownFlags(dom, 0);
}
static int
umlDomainDestroyFlags(virDomainPtr dom,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
virObjectEventPtr event = NULL;
int ret = -1;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByID(driver->domains, dom->id);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching id %d"), dom->id);
goto cleanup;
}
if (virDomainDestroyFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
umlShutdownVMDaemon(driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED);
virDomainAuditStop(vm, "destroyed");
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_DESTROYED);
if (!vm->persistent) {
virDomainObjListRemove(driver->domains,
vm);
vm = NULL;
}
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
if (event)
umlDomainEventQueue(driver, event);
umlDriverUnlock(driver);
return ret;
}
static int umlDomainDestroy(virDomainPtr dom)
{
return umlDomainDestroyFlags(dom, 0);
}
static char *umlDomainGetOSType(virDomainPtr dom) {
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *type = NULL;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainGetOSTypeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (VIR_STRDUP(type, vm->def->os.type) < 0)
goto cleanup;
cleanup:
if (vm)
virObjectUnlock(vm);
return type;
}
/* Returns max memory in kb, 0 if error */
static unsigned long long
umlDomainGetMaxMemory(virDomainPtr dom)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
unsigned long long ret = 0;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainGetMaxMemoryEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = virDomainDefGetMemoryActual(vm->def);
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static int umlDomainSetMaxMemory(virDomainPtr dom, unsigned long newmax)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainSetMaxMemoryEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (newmax < vm->def->mem.cur_balloon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("cannot set max memory lower than current memory"));
goto cleanup;
}
virDomainDefSetMemoryInitial(vm->def, newmax);
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static int umlDomainSetMemory(virDomainPtr dom, unsigned long newmem)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainSetMemoryEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot set memory of an active domain"));
goto cleanup;
}
if (newmem > virDomainDefGetMemoryActual(vm->def)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("cannot set memory higher than max memory"));
goto cleanup;
}
vm->def->mem.cur_balloon = newmem;
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static int umlDomainGetInfo(virDomainPtr dom,
virDomainInfoPtr info)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainGetInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
info->state = virDomainObjGetState(vm, NULL);
if (!virDomainObjIsActive(vm)) {
info->cpuTime = 0;
} else {
if (umlGetProcessInfo(&(info->cpuTime), vm->pid) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("cannot read cputime for domain"));
goto cleanup;
}
}
info->maxMem = virDomainDefGetMemoryActual(vm->def);
info->memory = vm->def->mem.cur_balloon;
info->nrVirtCpu = vm->def->vcpus;
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static int
umlDomainGetState(virDomainPtr dom,
int *state,
int *reason,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainGetStateEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
*state = virDomainObjGetState(vm, reason);
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static char *umlDomainGetXMLDesc(virDomainPtr dom,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *ret = NULL;
/* Flags checked by virDomainDefFormat */
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainGetXMLDescEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
ret = virDomainDefFormat((flags & VIR_DOMAIN_XML_INACTIVE) && vm->newDef ?
vm->newDef : vm->def,
virDomainDefFormatConvertXMLFlags(flags));
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static int umlConnectListDefinedDomains(virConnectPtr conn,
char **const names, int nnames) {
struct uml_driver *driver = conn->privateData;
int n;
if (virConnectListDefinedDomainsEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
n = virDomainObjListGetInactiveNames(driver->domains, names, nnames,
virConnectListDefinedDomainsCheckACL, conn);
umlDriverUnlock(driver);
return n;
}
static int umlConnectNumOfDefinedDomains(virConnectPtr conn)
{
struct uml_driver *driver = conn->privateData;
int n;
if (virConnectNumOfDefinedDomainsEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
n = virDomainObjListNumOfDomains(driver->domains, false,
virConnectNumOfDefinedDomainsCheckACL, conn);
umlDriverUnlock(driver);
return n;
}
static int umlDomainCreateWithFlags(virDomainPtr dom, unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
virObjectEventPtr event = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_START_AUTODESTROY, -1);
virNWFilterReadLockFilterUpdates();
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainCreateWithFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = umlStartVMDaemon(dom->conn, driver, vm,
(flags & VIR_DOMAIN_START_AUTODESTROY));
virDomainAuditStart(vm, "booted", ret >= 0);
if (ret == 0)
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_BOOTED);
cleanup:
if (vm)
virObjectUnlock(vm);
if (event)
umlDomainEventQueue(driver, event);
umlDriverUnlock(driver);
virNWFilterUnlockFilterUpdates();
return ret;
}
static int umlDomainCreate(virDomainPtr dom)
{
return umlDomainCreateWithFlags(dom, 0);
}
static virDomainPtr
umlDomainDefineXMLFlags(virConnectPtr conn, const char *xml, unsigned int flags)
{
struct uml_driver *driver = conn->privateData;
virDomainDefPtr def;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE;
virCheckFlags(VIR_DOMAIN_DEFINE_VALIDATE, NULL);
if (flags & VIR_DOMAIN_DEFINE_VALIDATE)
parse_flags |= VIR_DOMAIN_DEF_PARSE_VALIDATE;
umlDriverLock(driver);
if (!(def = virDomainDefParseString(xml, driver->caps, driver->xmlopt,
1 << VIR_DOMAIN_VIRT_UML,
parse_flags)))
goto cleanup;
if (virDomainDefineXMLFlagsEnsureACL(conn, def) < 0)
goto cleanup;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
0, NULL)))
goto cleanup;
def = NULL;
vm->persistent = 1;
if (virDomainSaveConfig(driver->configDir,
vm->newDef ? vm->newDef : vm->def) < 0) {
virDomainObjListRemove(driver->domains,
vm);
vm = NULL;
goto cleanup;
}
dom = virGetDomain(conn, vm->def->name, vm->def->uuid);
if (dom) dom->id = vm->def->id;
cleanup:
virDomainDefFree(def);
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return dom;
}
static virDomainPtr
umlDomainDefineXML(virConnectPtr conn, const char *xml)
{
return umlDomainDefineXMLFlags(conn, xml, 0);
}
static int umlDomainUndefineFlags(virDomainPtr dom,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainUndefineFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot undefine transient domain"));
goto cleanup;
}
if (virDomainDeleteConfig(driver->configDir, driver->autostartDir, vm) < 0)
goto cleanup;
if (virDomainObjIsActive(vm)) {
vm->persistent = 0;
} else {
virDomainObjListRemove(driver->domains, vm);
vm = NULL;
}
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int umlDomainUndefine(virDomainPtr dom)
{
return umlDomainUndefineFlags(dom, 0);
}
static int umlDomainAttachUmlDisk(struct uml_driver *driver,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
size_t i;
char *cmd = NULL;
char *reply = NULL;
for (i = 0; i < vm->def->ndisks; i++) {
if (STREQ(vm->def->disks[i]->dst, disk->dst)) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("target %s already exists"), disk->dst);
return -1;
}
}
if (!virDomainDiskGetSource(disk)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("disk source path is missing"));
goto error;
}
if (virAsprintf(&cmd, "config %s=%s", disk->dst,
virDomainDiskGetSource(disk)) < 0)
return -1;
if (umlMonitorCommand(driver, vm, cmd, &reply) < 0)
goto error;
if (VIR_REALLOC_N(vm->def->disks, vm->def->ndisks+1) < 0)
goto error;
virDomainDiskInsertPreAlloced(vm->def, disk);
VIR_FREE(reply);
VIR_FREE(cmd);
return 0;
error:
VIR_FREE(reply);
VIR_FREE(cmd);
return -1;
}
static int umlDomainAttachDevice(virDomainPtr dom, const char *xml)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDeviceDefPtr dev = NULL;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainAttachDeviceEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot attach device on inactive domain"));
goto cleanup;
}
dev = virDomainDeviceDefParse(xml, vm->def, driver->caps, driver->xmlopt,
VIR_DOMAIN_DEF_PARSE_INACTIVE);
if (dev == NULL)
goto cleanup;
if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
if (dev->data.disk->bus == VIR_DOMAIN_DISK_BUS_UML) {
ret = umlDomainAttachUmlDisk(driver, vm, dev->data.disk);
if (ret == 0)
dev->data.disk = NULL;
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("disk bus '%s' cannot be hotplugged."),
virDomainDiskBusTypeToString(dev->data.disk->bus));
}
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("device type '%s' cannot be attached"),
virDomainDeviceTypeToString(dev->type));
goto cleanup;
}
cleanup:
virDomainDeviceDefFree(dev);
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int
umlDomainAttachDeviceFlags(virDomainPtr dom,
const char *xml,
unsigned int flags)
{
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE | VIR_DOMAIN_AFFECT_CONFIG, -1);
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot modify the persistent configuration of a domain"));
return -1;
}
return umlDomainAttachDevice(dom, xml);
}
static int umlDomainDetachUmlDisk(struct uml_driver *driver,
virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
{
size_t i;
int ret = -1;
virDomainDiskDefPtr detach = NULL;
char *cmd;
char *reply;
for (i = 0; i < vm->def->ndisks; i++) {
if (STREQ(vm->def->disks[i]->dst, dev->data.disk->dst))
break;
}
if (i == vm->def->ndisks) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("disk %s not found"), dev->data.disk->dst);
return -1;
}
detach = vm->def->disks[i];
if (virAsprintf(&cmd, "remove %s", detach->dst) < 0)
return -1;
if (umlMonitorCommand(driver, vm, cmd, &reply) < 0)
goto cleanup;
virDomainDiskRemove(vm->def, i);
virDomainDiskDefFree(detach);
ret = 0;
VIR_FREE(reply);
cleanup:
VIR_FREE(cmd);
return ret;
}
static int umlDomainDetachDevice(virDomainPtr dom, const char *xml)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDeviceDefPtr dev = NULL;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainDetachDeviceEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot detach device on inactive domain"));
goto cleanup;
}
dev = virDomainDeviceDefParse(xml, vm->def, driver->caps, driver->xmlopt,
VIR_DOMAIN_DEF_PARSE_INACTIVE);
if (dev == NULL)
goto cleanup;
if (dev->type == VIR_DOMAIN_DEVICE_DISK &&
dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
if (dev->data.disk->bus == VIR_DOMAIN_DISK_BUS_UML)
ret = umlDomainDetachUmlDisk(driver, vm, dev);
else
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("This type of disk cannot be hot unplugged"));
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("This type of device cannot be hot unplugged"));
}
cleanup:
virDomainDeviceDefFree(dev);
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int
umlDomainDetachDeviceFlags(virDomainPtr dom,
const char *xml,
unsigned int flags)
{
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE | VIR_DOMAIN_AFFECT_CONFIG, -1);
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot modify the persistent configuration of a domain"));
return -1;
}
return umlDomainDetachDevice(dom, xml);
}
static int umlDomainGetAutostart(virDomainPtr dom,
int *autostart)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainGetAutostartEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
*autostart = vm->autostart;
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int umlDomainSetAutostart(virDomainPtr dom,
int autostart)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
char *configFile = NULL, *autostartLink = NULL;
int ret = -1;
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainSetAutostartEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot set autostart for transient domain"));
goto cleanup;
}
autostart = (autostart != 0);
if (vm->autostart != autostart) {
if ((configFile = virDomainConfigFile(driver->configDir, vm->def->name)) == NULL)
goto cleanup;
if ((autostartLink = virDomainConfigFile(driver->autostartDir, vm->def->name)) == NULL)
goto cleanup;
if (autostart) {
if (virFileMakePath(driver->autostartDir) < 0) {
virReportSystemError(errno,
_("cannot create autostart directory %s"),
driver->autostartDir);
goto cleanup;
}
if (symlink(configFile, autostartLink) < 0) {
virReportSystemError(errno,
_("Failed to create symlink '%s to '%s'"),
autostartLink, configFile);
goto cleanup;
}
} else {
if (unlink(autostartLink) < 0 && errno != ENOENT && errno != ENOTDIR) {
virReportSystemError(errno,
_("Failed to delete symlink '%s'"),
autostartLink);
goto cleanup;
}
}
vm->autostart = autostart;
}
ret = 0;
cleanup:
VIR_FREE(configFile);
VIR_FREE(autostartLink);
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int
umlDomainBlockPeek(virDomainPtr dom,
const char *path,
unsigned long long offset, size_t size,
void *buffer,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int fd = -1, ret = -1;
const char *actual;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, "%s",
_("no domain with matching uuid"));
goto cleanup;
}
if (virDomainBlockPeekEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!path || path[0] == '\0') {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("NULL or empty path"));
goto cleanup;
}
/* Check the path belongs to this domain. */
if (!(actual = virDomainDiskPathByName(vm->def, path))) {
virReportError(VIR_ERR_INVALID_ARG,
_("invalid path '%s'"), path);
goto cleanup;
}
path = actual;
/* The path is correct, now try to open it and get its size. */
fd = open(path, O_RDONLY);
if (fd == -1) {
virReportSystemError(errno,
_("cannot open %s"), path);
goto cleanup;
}
/* Seek and read. */
/* NB. Because we configure with AC_SYS_LARGEFILE, off_t should
* be 64 bits on all platforms.
*/
if (lseek(fd, offset, SEEK_SET) == (off_t) -1 ||
saferead(fd, buffer, size) == (ssize_t) -1) {
virReportSystemError(errno,
_("cannot read %s"), path);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
if (vm)
virObjectUnlock(vm);
return ret;
}
static int
umlDomainOpenConsole(virDomainPtr dom,
const char *dev_name,
virStreamPtr st,
unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
char uuidstr[VIR_UUID_STRING_BUFLEN];
int ret = -1;
virDomainChrDefPtr chr = NULL;
size_t i;
virCheckFlags(0, -1);
umlDriverLock(driver);
virUUIDFormat(dom->uuid, uuidstr);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainOpenConsoleEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto cleanup;
}
if (dev_name) {
for (i = 0; i < vm->def->nconsoles; i++) {
if (vm->def->consoles[i]->info.alias &&
STREQ(vm->def->consoles[i]->info.alias, dev_name)) {
chr = vm->def->consoles[i];
break;
}
}
} else {
if (vm->def->nconsoles)
chr = vm->def->consoles[0];
else if (vm->def->nserials)
chr = vm->def->serials[0];
}
if (!chr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find console device '%s'"),
dev_name ? dev_name : _("default"));
goto cleanup;
}
if (chr->source.type != VIR_DOMAIN_CHR_TYPE_PTY) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("character device %s is not using a PTY"), dev_name);
goto cleanup;
}
if (virFDStreamOpenFile(st, chr->source.data.file.path,
0, 0, O_RDWR) < 0)
goto cleanup;
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
umlDriverUnlock(driver);
return ret;
}
static int
umlConnectDomainEventRegister(virConnectPtr conn,
virConnectDomainEventCallback callback,
void *opaque,
virFreeCallback freecb)
{
struct uml_driver *driver = conn->privateData;
int ret = 0;
if (virConnectDomainEventRegisterEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
if (virDomainEventStateRegister(conn,
driver->domainEventState,
callback, opaque, freecb) < 0)
ret = -1;
umlDriverUnlock(driver);
return ret;
}
static int
umlConnectDomainEventDeregister(virConnectPtr conn,
virConnectDomainEventCallback callback)
{
struct uml_driver *driver = conn->privateData;
int ret = 0;
if (virConnectDomainEventDeregisterEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
if (virDomainEventStateDeregister(conn,
driver->domainEventState,
callback) < 0)
ret = -1;
umlDriverUnlock(driver);
return ret;
}
static int
umlConnectDomainEventRegisterAny(virConnectPtr conn,
virDomainPtr dom,
int eventID,
virConnectDomainEventGenericCallback callback,
void *opaque,
virFreeCallback freecb)
{
struct uml_driver *driver = conn->privateData;
int ret;
if (virConnectDomainEventRegisterAnyEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
if (virDomainEventStateRegisterID(conn,
driver->domainEventState,
dom, eventID,
callback, opaque, freecb, &ret) < 0)
ret = -1;
umlDriverUnlock(driver);
return ret;
}
static int
umlConnectDomainEventDeregisterAny(virConnectPtr conn,
int callbackID)
{
struct uml_driver *driver = conn->privateData;
int ret = 0;
if (virConnectDomainEventDeregisterAnyEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
if (virObjectEventStateDeregisterID(conn,
driver->domainEventState,
callbackID) < 0)
ret = -1;
umlDriverUnlock(driver);
return ret;
}
/* driver must be locked before calling */
static void umlDomainEventQueue(struct uml_driver *driver,
virObjectEventPtr event)
{
virObjectEventStateQueue(driver->domainEventState, event);
}
static int umlConnectListAllDomains(virConnectPtr conn,
virDomainPtr **domains,
unsigned int flags)
{
struct uml_driver *driver = conn->privateData;
int ret = -1;
virCheckFlags(VIR_CONNECT_LIST_DOMAINS_FILTERS_ALL, -1);
if (virConnectListAllDomainsEnsureACL(conn) < 0)
return -1;
umlDriverLock(driver);
ret = virDomainObjListExport(driver->domains, conn, domains,
virConnectListAllDomainsCheckACL, flags);
umlDriverUnlock(driver);
return ret;
}
static int
umlNodeGetInfo(virConnectPtr conn,
virNodeInfoPtr nodeinfo)
{
if (virNodeGetInfoEnsureACL(conn) < 0)
return -1;
return nodeGetInfo(nodeinfo);
}
static int
umlNodeGetCPUStats(virConnectPtr conn,
int cpuNum,
virNodeCPUStatsPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetCPUStatsEnsureACL(conn) < 0)
return -1;
return nodeGetCPUStats(cpuNum, params, nparams, flags);
}
static int
umlNodeGetMemoryStats(virConnectPtr conn,
int cellNum,
virNodeMemoryStatsPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetMemoryStatsEnsureACL(conn) < 0)
return -1;
return nodeGetMemoryStats(cellNum, params, nparams, flags);
}
static int
umlNodeGetCellsFreeMemory(virConnectPtr conn,
unsigned long long *freeMems,
int startCell,
int maxCells)
{
if (virNodeGetCellsFreeMemoryEnsureACL(conn) < 0)
return -1;
return nodeGetCellsFreeMemory(freeMems, startCell, maxCells);
}
static unsigned long long
umlNodeGetFreeMemory(virConnectPtr conn)
{
unsigned long long freeMem;
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
if (nodeGetMemory(NULL, &freeMem) < 0)
return 0;
return freeMem;
}
static int
umlNodeGetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetMemoryParametersEnsureACL(conn) < 0)
return -1;
return nodeGetMemoryParameters(params, nparams, flags);
}
static int
umlNodeSetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
if (virNodeSetMemoryParametersEnsureACL(conn) < 0)
return -1;
return nodeSetMemoryParameters(params, nparams, flags);
}
static int
umlNodeGetCPUMap(virConnectPtr conn,
unsigned char **cpumap,
unsigned int *online,
unsigned int flags)
{
if (virNodeGetCPUMapEnsureACL(conn) < 0)
return -1;
return nodeGetCPUMap(cpumap, online, flags);
}
static int
umlNodeSuspendForDuration(virConnectPtr conn,
unsigned int target,
unsigned long long duration,
unsigned int flags)
{
if (virNodeSuspendForDurationEnsureACL(conn) < 0)
return -1;
return nodeSuspendForDuration(target, duration, flags);
}
static int
umlNodeGetFreePages(virConnectPtr conn,
unsigned int npages,
unsigned int *pages,
int startCell,
unsigned int cellCount,
unsigned long long *counts,
unsigned int flags)
{
virCheckFlags(0, -1);
if (virNodeGetFreePagesEnsureACL(conn) < 0)
return -1;
return nodeGetFreePages(npages, pages, startCell, cellCount, counts);
}
static int
umlNodeAllocPages(virConnectPtr conn,
unsigned int npages,
unsigned int *pageSizes,
unsigned long long *pageCounts,
int startCell,
unsigned int cellCount,
unsigned int flags)
{
bool add = !(flags & VIR_NODE_ALLOC_PAGES_SET);
virCheckFlags(VIR_NODE_ALLOC_PAGES_SET, -1);
if (virNodeAllocPagesEnsureACL(conn) < 0)
return -1;
return nodeAllocPages(npages, pageSizes, pageCounts,
startCell, cellCount, add);
}
static int
umlDomainHasManagedSaveImage(virDomainPtr dom, unsigned int flags)
{
struct uml_driver *driver = dom->conn->privateData;
int ret = -1;
virDomainObjPtr vm;
virCheckFlags(0, -1);
umlDriverLock(driver);
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
umlDriverUnlock(driver);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN, NULL);
goto cleanup;
}
if (virDomainHasManagedSaveImageEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = 0;
cleanup:
if (vm)
virObjectUnlock(vm);
return ret;
}
static virHypervisorDriver umlHypervisorDriver = {
.name = "UML",
.connectOpen = umlConnectOpen, /* 0.5.0 */
.connectClose = umlConnectClose, /* 0.5.0 */
.connectGetType = umlConnectGetType, /* 0.5.0 */
.connectGetVersion = umlConnectGetVersion, /* 0.5.0 */
.connectGetHostname = umlConnectGetHostname, /* 0.5.0 */
.nodeGetInfo = umlNodeGetInfo, /* 0.5.0 */
.connectGetCapabilities = umlConnectGetCapabilities, /* 0.5.0 */
.connectListDomains = umlConnectListDomains, /* 0.5.0 */
.connectNumOfDomains = umlConnectNumOfDomains, /* 0.5.0 */
.connectListAllDomains = umlConnectListAllDomains, /* 0.9.13 */
.domainCreateXML = umlDomainCreateXML, /* 0.5.0 */
.domainLookupByID = umlDomainLookupByID, /* 0.5.0 */
.domainLookupByUUID = umlDomainLookupByUUID, /* 0.5.0 */
.domainLookupByName = umlDomainLookupByName, /* 0.5.0 */
.domainShutdown = umlDomainShutdown, /* 0.5.0 */
.domainShutdownFlags = umlDomainShutdownFlags, /* 0.9.10 */
.domainDestroy = umlDomainDestroy, /* 0.5.0 */
.domainDestroyFlags = umlDomainDestroyFlags, /* 0.9.4 */
.domainGetOSType = umlDomainGetOSType, /* 0.5.0 */
.domainGetMaxMemory = umlDomainGetMaxMemory, /* 0.5.0 */
.domainSetMaxMemory = umlDomainSetMaxMemory, /* 0.5.0 */
.domainSetMemory = umlDomainSetMemory, /* 0.5.0 */
.domainGetInfo = umlDomainGetInfo, /* 0.5.0 */
.domainGetState = umlDomainGetState, /* 0.9.2 */
.domainGetXMLDesc = umlDomainGetXMLDesc, /* 0.5.0 */
.connectListDefinedDomains = umlConnectListDefinedDomains, /* 0.5.0 */
.connectNumOfDefinedDomains = umlConnectNumOfDefinedDomains, /* 0.5.0 */
.domainCreate = umlDomainCreate, /* 0.5.0 */
.domainCreateWithFlags = umlDomainCreateWithFlags, /* 0.8.2 */
.domainDefineXML = umlDomainDefineXML, /* 0.5.0 */
.domainDefineXMLFlags = umlDomainDefineXMLFlags, /* 1.2.12 */
.domainUndefine = umlDomainUndefine, /* 0.5.0 */
.domainUndefineFlags = umlDomainUndefineFlags, /* 0.9.4 */
.domainAttachDevice = umlDomainAttachDevice, /* 0.8.4 */
.domainAttachDeviceFlags = umlDomainAttachDeviceFlags, /* 0.8.4 */
.domainDetachDevice = umlDomainDetachDevice, /* 0.8.4 */
.domainDetachDeviceFlags = umlDomainDetachDeviceFlags, /* 0.8.4 */
.domainGetAutostart = umlDomainGetAutostart, /* 0.5.0 */
.domainSetAutostart = umlDomainSetAutostart, /* 0.5.0 */
.domainBlockPeek = umlDomainBlockPeek, /* 0.5.0 */
.nodeGetCPUStats = umlNodeGetCPUStats, /* 0.9.3 */
.nodeGetMemoryStats = umlNodeGetMemoryStats, /* 0.9.3 */
.nodeGetCellsFreeMemory = umlNodeGetCellsFreeMemory, /* 0.5.0 */
.nodeGetFreeMemory = umlNodeGetFreeMemory, /* 0.5.0 */
.nodeGetCPUMap = umlNodeGetCPUMap, /* 1.0.0 */
.connectDomainEventRegister = umlConnectDomainEventRegister, /* 0.9.4 */
.connectDomainEventDeregister = umlConnectDomainEventDeregister, /* 0.9.4 */
.connectIsEncrypted = umlConnectIsEncrypted, /* 0.7.3 */
.connectIsSecure = umlConnectIsSecure, /* 0.7.3 */
.domainIsActive = umlDomainIsActive, /* 0.7.3 */
.domainIsPersistent = umlDomainIsPersistent, /* 0.7.3 */
.domainIsUpdated = umlDomainIsUpdated, /* 0.8.6 */
.connectDomainEventRegisterAny = umlConnectDomainEventRegisterAny, /* 0.9.4 */
.connectDomainEventDeregisterAny = umlConnectDomainEventDeregisterAny, /* 0.9.4 */
.domainOpenConsole = umlDomainOpenConsole, /* 0.8.6 */
.connectIsAlive = umlConnectIsAlive, /* 0.9.8 */
.nodeSuspendForDuration = umlNodeSuspendForDuration, /* 0.9.8 */
.nodeGetMemoryParameters = umlNodeGetMemoryParameters, /* 0.10.2 */
.nodeSetMemoryParameters = umlNodeSetMemoryParameters, /* 0.10.2 */
.nodeGetFreePages = umlNodeGetFreePages, /* 1.2.6 */
.nodeAllocPages = umlNodeAllocPages, /* 1.2.9 */
.domainHasManagedSaveImage = umlDomainHasManagedSaveImage, /* 1.2.13 */
};
static virConnectDriver umlConnectDriver = {
.hypervisorDriver = &umlHypervisorDriver,
};
static virStateDriver umlStateDriver = {
.name = "UML",
.stateInitialize = umlStateInitialize,
.stateAutoStart = umlStateAutoStart,
.stateCleanup = umlStateCleanup,
.stateReload = umlStateReload,
};
int umlRegister(void)
{
if (virRegisterConnectDriver(&umlConnectDriver,
true) < 0)
return -1;
if (virRegisterStateDriver(&umlStateDriver) < 0)
return -1;
return 0;
}
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