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Refactor the security drivers to simplify usage

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The current security driver usage requires horrible code like

    if (driver->securityDriver &&
        driver->securityDriver->domainSetSecurityHostdevLabel &&
        driver->securityDriver->domainSetSecurityHostdevLabel(driver->securityDriver,
                                                              vm, hostdev) < 0)

This pair of checks for NULL clutters up the code, making the driver
calls 2 lines longer than they really need to be. The goal of the
patchset is to change the calling convention to simply

  if (virSecurityManagerSetHostdevLabel(driver->securityDriver,
                                        vm, hostdev) < 0)

The first check for 'driver->securityDriver' being NULL is removed
by introducing a 'no op' security driver that will always be present
if no real driver is enabled. This guarentees driver->securityDriver
!= NULL.

The second check for 'driver->securityDriver->domainSetSecurityHostdevLabel'
being non-NULL is hidden in a new abstraction called virSecurityManager.
This separates the driver callbacks, from main internal API. The addition
of a virSecurityManager object, that is separate from the virSecurityDriver
struct also allows for security drivers to carry state / configuration
information directly. Thus the DAC/Stack drivers from src/qemu which
used to pull config from 'struct qemud_driver' can now be moved into
the 'src/security' directory and store their config directly.

* src/qemu/qemu_conf.h, src/qemu/qemu_driver.c: Update to
  use new virSecurityManager APIs
* src/qemu/qemu_security_dac.c,  src/qemu/qemu_security_dac.h
  src/qemu/qemu_security_stacked.c, src/qemu/qemu_security_stacked.h:
  Move into src/security directory
* src/security/security_stack.c, src/security/security_stack.h,
  src/security/security_dac.c, src/security/security_dac.h: Generic
  versions of previous QEMU specific drivers
* src/security/security_apparmor.c, src/security/security_apparmor.h,
  src/security/security_driver.c, src/security/security_driver.h,
  src/security/security_selinux.c, src/security/security_selinux.h:
  Update to take virSecurityManagerPtr object as the first param
  in all callbacks
* src/security/security_nop.c, src/security/security_nop.h: Stub
  implementation of all security driver APIs.
* src/security/security_manager.h, src/security/security_manager.c:
  New internal API for invoking security drivers
* src/libvirt.c: Add missing debug for security APIs
This commit is contained in:
Daniel P. Berrange 2010-11-17 20:26:30 +00:00
parent 92d6530106
commit d6623003c6
26 changed files with 2204 additions and 1472 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
po/POTFILES.in
View File

@ -61,10 +61,10 @@ src/qemu/qemu_hotplug.c
src/qemu/qemu_monitor.c
src/qemu/qemu_monitor_json.c
src/qemu/qemu_monitor_text.c
src/qemu/qemu_security_dac.c
src/remote/remote_driver.c
src/secret/secret_driver.c
src/security/security_apparmor.c
src/security/security_dac.c
src/security/security_driver.c
src/security/security_selinux.c
src/security/virt-aa-helper.c

12
src/Makefile.am
View File

@ -288,11 +288,7 @@ QEMU_DRIVER_SOURCES = \
qemu/qemu_monitor_json.h \
qemu/qemu_driver.c qemu/qemu_driver.h \
qemu/qemu_bridge_filter.c \
qemu/qemu_bridge_filter.h \
qemu/qemu_security_stacked.h \
qemu/qemu_security_stacked.c \
qemu/qemu_security_dac.h \
qemu/qemu_security_dac.c
qemu/qemu_bridge_filter.h
XENAPI_DRIVER_SOURCES = \
xenapi/xenapi_driver.c xenapi/xenapi_driver.h \
@ -390,7 +386,11 @@ NWFILTER_DRIVER_SOURCES = \
# Security framework and drivers for various models
SECURITY_DRIVER_SOURCES = \
security/security_driver.h security/security_driver.c
security/security_driver.h security/security_driver.c \
security/security_nop.h security/security_nop.c \
security/security_stack.h security/security_stack.c \
security/security_dac.h security/security_dac.c \
security/security_manager.h security/security_manager.c
SECURITY_DRIVER_SELINUX_SOURCES = \
security/security_selinux.h security/security_selinux.c

4
src/libvirt.c
View File

@ -5642,6 +5642,8 @@ virDomainGetSecurityLabel(virDomainPtr domain, virSecurityLabelPtr seclabel)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "seclabel=%p", seclabel);
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(NULL, VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
@ -5684,6 +5686,8 @@ error:
int
virNodeGetSecurityModel(virConnectPtr conn, virSecurityModelPtr secmodel)
{
DEBUG("conn=%p secmodel=%p", conn, secmodel);
if (!VIR_IS_CONNECT(conn)) {
virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__);
virDispatchError(NULL);

34
src/libvirt_private.syms
View File

@ -701,13 +701,33 @@ virSecretDefParseFile;
virSecretDefParseString;
# security.h
virSecurityDriverGetDOI;
virSecurityDriverGetModel;
virSecurityDriverInit;
virSecurityDriverSetDOI;
virSecurityDriverStartup;
virSecurityDriverVerify;
# security_driver.h
virSecurityDriverLookup;
# security_manager.h
virSecurityManagerClearSocketLabel;
virSecurityManagerFree;
virSecurityManagerGenLabel;
virSecurityManagerGetDOI;
virSecurityManagerGetModel;
virSecurityManagerGetProcessLabel;
virSecurityManagerNew;
virSecurityManagerNewStack;
virSecurityManagerNewDAC;
virSecurityManagerReleaseLabel;
virSecurityManagerReserveLabel;
virSecurityManagerRestoreImageLabel;
virSecurityManagerRestoreAllLabel;
virSecurityManagerRestoreHostdevLabel;
virSecurityManagerRestoreSavedStateLabel;
virSecurityManagerSetAllLabel;
virSecurityManagerSetImageLabel;
virSecurityManagerSetHostdevLabel;
virSecurityManagerSetProcessLabel;
virSecurityManagerSetSavedStateLabel;
virSecurityManagerSetSocketLabel;
virSecurityManagerVerify;
# storage_conf.h

6
src/qemu/qemu_conf.h
View File

@ -35,7 +35,7 @@
# include "domain_conf.h"
# include "domain_event.h"
# include "threads.h"
# include "security/security_driver.h"
# include "security/security_manager.h"
# include "cgroup.h"
# include "pci.h"
# include "cpu_conf.h"
@ -114,9 +114,7 @@ struct qemud_driver {
int domainEventDispatching;
char *securityDriverName;
virSecurityDriverPtr securityDriver;
virSecurityDriverPtr securityPrimaryDriver;
virSecurityDriverPtr securitySecondaryDriver;
virSecurityManagerPtr securityManager;
char *saveImageFormat;
char *dumpImageFormat;

171
src/qemu/qemu_driver.c
View File

@ -73,8 +73,6 @@
#include "pci.h"
#include "hostusb.h"
#include "processinfo.h"
#include "qemu_security_stacked.h"
#include "qemu_security_dac.h"
#include "libvirt_internal.h"
#include "xml.h"
#include "cpu/cpu.h"
@ -861,10 +859,7 @@ qemuConnectMonitor(struct qemud_driver *driver, virDomainObjPtr vm)
qemuDomainObjPrivatePtr priv = vm->privateData;
int ret = -1;
if (driver->securityDriver &&
driver->securityDriver->domainSetSecuritySocketLabel &&
driver->securityDriver->domainSetSecuritySocketLabel
(driver->securityDriver,vm) < 0) {
if (virSecurityManagerSetSocketLabel(driver->securityManager, vm) < 0) {
VIR_ERROR(_("Failed to set security context for monitor for %s"),
vm->def->name);
goto error;
@ -882,10 +877,7 @@ qemuConnectMonitor(struct qemud_driver *driver, virDomainObjPtr vm)
if (priv->mon == NULL)
virDomainObjUnref(vm);
if (driver->securityDriver &&
driver->securityDriver->domainClearSecuritySocketLabel &&
driver->securityDriver->domainClearSecuritySocketLabel
(driver->securityDriver,vm) < 0) {
if (virSecurityManagerClearSocketLabel(driver->securityManager, vm) < 0) {
VIR_ERROR(_("Failed to clear security context for monitor for %s"),
vm->def->name);
goto error;
@ -954,10 +946,7 @@ qemuReconnectDomain(void *payload, const char *name ATTRIBUTE_UNUSED, void *opaq
goto error;
}
if (driver->securityDriver &&
driver->securityDriver->domainReserveSecurityLabel &&
driver->securityDriver->domainReserveSecurityLabel(driver->securityDriver,
obj) < 0)
if (virSecurityManagerReserveLabel(driver->securityManager, obj) < 0)
goto error;
if (qemudVMFiltersInstantiate(conn, obj->def))
@ -995,35 +984,34 @@ qemuReconnectDomains(virConnectPtr conn, struct qemud_driver *driver)
static int
qemudSecurityInit(struct qemud_driver *qemud_drv)
qemuSecurityInit(struct qemud_driver *driver)
{
int ret;
virSecurityDriverPtr security_drv;
virSecurityManagerPtr mgr = virSecurityManagerNew(driver->securityDriverName,
driver->allowDiskFormatProbing);
if (!mgr)
goto error;
qemuSecurityStackedSetDriver(qemud_drv);
qemuSecurityDACSetDriver(qemud_drv);
if (driver->privileged) {
virSecurityManagerPtr dac = virSecurityManagerNewDAC(driver->user,
driver->group,
driver->allowDiskFormatProbing,
driver->dynamicOwnership);
if (!dac)
goto error;
ret = virSecurityDriverStartup(&security_drv,
qemud_drv->securityDriverName,
qemud_drv->allowDiskFormatProbing);
if (ret == -1) {
VIR_ERROR0(_("Failed to start security driver"));
return -1;
}
/* No primary security driver wanted to be enabled: just setup
* the DAC driver on its own */
if (ret == -2) {
qemud_drv->securityDriver = &qemuDACSecurityDriver;
VIR_INFO0(_("No security driver available"));
if (!(driver->securityManager = virSecurityManagerNewStack(mgr,
dac)))
goto error;
} else {
qemud_drv->securityPrimaryDriver = security_drv;
qemud_drv->securitySecondaryDriver = &qemuDACSecurityDriver;
qemud_drv->securityDriver = &qemuStackedSecurityDriver;
VIR_INFO("Initialized security driver %s", security_drv->name);
driver->securityManager = mgr;
}
return 0;
error:
VIR_ERROR0(_("Failed to initialize security drivers"));
virSecurityManagerFree(mgr);
return -1;
}
@ -1057,21 +1045,20 @@ qemuCreateCapabilities(virCapsPtr oldcaps,
}
/* Security driver data */
if (driver->securityPrimaryDriver) {
const char *doi, *model;
doi = virSecurityDriverGetDOI(driver->securityPrimaryDriver);
model = virSecurityDriverGetModel(driver->securityPrimaryDriver);
const char *doi, *model;
doi = virSecurityManagerGetDOI(driver->securityManager);
model = virSecurityManagerGetModel(driver->securityManager);
if (STRNEQ(model, "none")) {
if (!(caps->host.secModel.model = strdup(model)))
goto no_memory;
if (!(caps->host.secModel.doi = strdup(doi)))
goto no_memory;
VIR_DEBUG("Initialized caps for security driver \"%s\" with "
"DOI \"%s\"", model, doi);
}
VIR_DEBUG("Initialized caps for security driver \"%s\" with "
"DOI \"%s\"", model, doi);
return caps;
no_memory:
@ -1336,7 +1323,7 @@ qemudStartup(int privileged) {
}
VIR_FREE(driverConf);
if (qemudSecurityInit(qemu_driver) < 0)
if (qemuSecurityInit(qemu_driver) < 0)
goto error;
if ((qemu_driver->caps = qemuCreateCapabilities(NULL,
@ -1555,10 +1542,11 @@ qemudShutdown(void) {
VIR_FREE(qemu_driver->spicePassword);
VIR_FREE(qemu_driver->hugetlbfs_mount);
VIR_FREE(qemu_driver->hugepage_path);
VIR_FREE(qemu_driver->securityDriverName);
VIR_FREE(qemu_driver->saveImageFormat);
VIR_FREE(qemu_driver->dumpImageFormat);
virSecurityManagerFree(qemu_driver->securityManager);
ebtablesContextFree(qemu_driver->ebtables);
if (qemu_driver->cgroupDeviceACL) {
@ -2573,9 +2561,7 @@ static int qemudSecurityHook(void *data) {
if (qemudInitCpuAffinity(h->vm) < 0)
return -1;
if (h->driver->securityDriver &&
h->driver->securityDriver->domainSetSecurityProcessLabel &&
h->driver->securityDriver->domainSetSecurityProcessLabel(h->driver->securityDriver, h->vm) < 0)
if (virSecurityManagerSetProcessLabel(h->driver->securityManager, h->vm) < 0)
return -1;
return 0;
@ -2660,22 +2646,16 @@ static int qemudStartVMDaemon(virConnectPtr conn,
/* If you are using a SecurityDriver with dynamic labelling,
then generate a security label for isolation */
DEBUG0("Generating domain security label (if required)");
if (driver->securityDriver &&
driver->securityDriver->domainGenSecurityLabel) {
ret = driver->securityDriver->domainGenSecurityLabel(driver->securityDriver,
vm);
qemuDomainSecurityLabelAudit(vm, ret >= 0);
if (ret < 0)
goto cleanup;
}
DEBUG0("Generating setting domain security labels (if required)");
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityAllLabel &&
driver->securityDriver->domainSetSecurityAllLabel(driver->securityDriver,
vm, stdin_path) < 0) {
if (virSecurityManagerGenLabel(driver->securityManager, vm) < 0) {
qemuDomainSecurityLabelAudit(vm, false);
goto cleanup;
}
qemuDomainSecurityLabelAudit(vm, true);
DEBUG0("Generating setting domain security labels (if required)");
if (virSecurityManagerSetAllLabel(driver->securityManager,
vm, stdin_path) < 0)
goto cleanup;
/* Ensure no historical cgroup for this VM is lying around bogus
* settings */
@ -3057,14 +3037,9 @@ static void qemudShutdownVMDaemon(struct qemud_driver *driver,
}
/* Reset Security Labels */
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityAllLabel)
driver->securityDriver->domainRestoreSecurityAllLabel(driver->securityDriver,
vm, migrated);
if (driver->securityDriver &&
driver->securityDriver->domainReleaseSecurityLabel)
driver->securityDriver->domainReleaseSecurityLabel(driver->securityDriver,
vm);
virSecurityManagerRestoreAllLabel(driver->securityManager,
vm, migrated);
virSecurityManagerReleaseLabel(driver->securityManager, vm);
/* Clear out dynamically assigned labels */
if (vm->def->seclabel.type == VIR_DOMAIN_SECLABEL_DYNAMIC) {
@ -3568,7 +3543,7 @@ static virDomainPtr qemudDomainCreate(virConnectPtr conn, const char *xml,
VIR_DOMAIN_XML_INACTIVE)))
goto cleanup;
if (virSecurityDriverVerify(def) < 0)
if (virSecurityManagerVerify(driver->securityManager, def) < 0)
goto cleanup;
if (virDomainObjIsDuplicate(&driver->domains, def, 1) < 0)
@ -4471,10 +4446,8 @@ static int qemudDomainSaveFlag(struct qemud_driver *driver, virDomainPtr dom,
}
if ((!bypassSecurityDriver) &&
driver->securityDriver &&
driver->securityDriver->domainSetSavedStateLabel &&
driver->securityDriver->domainSetSavedStateLabel(driver->securityDriver,
vm, path) == -1)
virSecurityManagerSetSavedStateLabel(driver->securityManager,
vm, path) < 0)
goto endjob;
if (header.compressed == QEMUD_SAVE_FORMAT_RAW) {
@ -4507,10 +4480,8 @@ static int qemudDomainSaveFlag(struct qemud_driver *driver, virDomainPtr dom,
goto endjob;
if ((!bypassSecurityDriver) &&
driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
virSecurityManagerRestoreSavedStateLabel(driver->securityManager,
vm, path) < 0)
VIR_WARN("failed to restore save state label on %s", path);
if (cgroup != NULL) {
@ -4552,10 +4523,8 @@ endjob:
}
if ((!bypassSecurityDriver) &&
driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
virSecurityManagerRestoreSavedStateLabel(driver->securityManager,
vm, path) < 0)
VIR_WARN("failed to restore save state label on %s", path);
}
@ -4779,10 +4748,8 @@ static int doCoreDump(struct qemud_driver *driver,
goto cleanup;
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSavedStateLabel &&
driver->securityDriver->domainSetSavedStateLabel(driver->securityDriver,
vm, path) == -1)
if (virSecurityManagerSetSavedStateLabel(driver->securityManager,
vm, path) < 0)
goto cleanup;
qemuDomainObjEnterMonitorWithDriver(driver, vm);
@ -4814,10 +4781,8 @@ static int doCoreDump(struct qemud_driver *driver,
if (ret < 0)
goto cleanup;
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
if (virSecurityManagerRestoreSavedStateLabel(driver->securityManager,
vm, path) < 0)
goto cleanup;
cleanup:
@ -5434,10 +5399,8 @@ static int qemudDomainGetSecurityLabel(virDomainPtr dom, virSecurityLabelPtr sec
* QEMU monitor hasn't seen SIGHUP/ERR on poll().
*/
if (virDomainObjIsActive(vm)) {
if (driver->securityDriver &&
driver->securityDriver->domainGetSecurityProcessLabel &&
driver->securityDriver->domainGetSecurityProcessLabel(driver->securityDriver,
vm, seclabel) < 0) {
if (virSecurityManagerGetProcessLabel(driver->securityManager,
vm, seclabel) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Failed to get security label"));
goto cleanup;
@ -5461,10 +5424,12 @@ static int qemudNodeGetSecurityModel(virConnectPtr conn,
int ret = 0;
qemuDriverLock(driver);
if (!driver->securityPrimaryDriver) {
memset(secmodel, 0, sizeof (*secmodel));
memset(secmodel, 0, sizeof(*secmodel));
/* NULL indicates no driver, which we treat as
* success, but simply return no data in *secmodel */
if (driver->caps->host.secModel.model == NULL)
goto cleanup;
}
p = driver->caps->host.secModel.model;
if (strlen(p) >= VIR_SECURITY_MODEL_BUFLEN-1) {
@ -5840,10 +5805,8 @@ qemudDomainSaveImageStartVM(virConnectPtr conn,
ret = 0;
out:
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
if (virSecurityManagerRestoreSavedStateLabel(driver->securityManager,
vm, path) < 0)
VIR_WARN("failed to restore save state label on %s", path);
return ret;
@ -6372,7 +6335,7 @@ static virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) {
VIR_DOMAIN_XML_INACTIVE)))
goto cleanup;
if (virSecurityDriverVerify(def) < 0)
if (virSecurityManagerVerify(driver->securityManager, def) < 0)
goto cleanup;
if ((dupVM = virDomainObjIsDuplicate(&driver->domains, def, 0)) < 0)

84
src/qemu/qemu_hotplug.c
View File

@ -83,10 +83,8 @@ int qemuDomainChangeEjectableMedia(struct qemud_driver *driver,
return -1;
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityImageLabel &&
driver->securityDriver->domainSetSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerSetImageLabel(driver->securityManager,
vm, disk) < 0)
return -1;
if (!(driveAlias = qemuDeviceDriveHostAlias(origdisk, qemuCmdFlags)))
@ -115,10 +113,8 @@ int qemuDomainChangeEjectableMedia(struct qemud_driver *driver,
if (ret < 0)
goto error;
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, origdisk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, origdisk) < 0)
VIR_WARN("Unable to restore security label on ejected image %s", origdisk->src);
VIR_FREE(origdisk->src);
@ -134,10 +130,8 @@ int qemuDomainChangeEjectableMedia(struct qemud_driver *driver,
error:
VIR_FREE(driveAlias);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, disk) < 0)
VIR_WARN("Unable to restore security label on new media %s", disk->src);
return -1;
}
@ -162,10 +156,8 @@ int qemuDomainAttachPciDiskDevice(struct qemud_driver *driver,
}
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityImageLabel &&
driver->securityDriver->domainSetSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerSetImageLabel(driver->securityManager,
vm, disk) < 0)
return -1;
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
@ -232,10 +224,8 @@ error:
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &disk->info) < 0)
VIR_WARN("Unable to release PCI address on %s", disk->src);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, disk) < 0)
VIR_WARN("Unable to restore security label on %s", disk->src);
return -1;
@ -375,10 +365,8 @@ int qemuDomainAttachSCSIDisk(struct qemud_driver *driver,
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityImageLabel &&
driver->securityDriver->domainSetSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerSetImageLabel(driver->securityManager,
vm, disk) < 0)
return -1;
/* We should have an address already, so make sure */
@ -464,10 +452,8 @@ error:
VIR_FREE(devstr);
VIR_FREE(drivestr);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, disk) < 0)
VIR_WARN("Unable to restore security label on %s", disk->src);
return -1;
@ -492,10 +478,8 @@ int qemuDomainAttachUsbMassstorageDevice(struct qemud_driver *driver,
}
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityImageLabel &&
driver->securityDriver->domainSetSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerSetImageLabel(driver->securityManager,
vm, disk) < 0)
return -1;
if (!disk->src) {
@ -551,10 +535,8 @@ error:
VIR_FREE(devstr);
VIR_FREE(drivestr);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, disk) < 0)
VIR_WARN("Unable to restore security label on %s", disk->src);
return -1;
@ -979,10 +961,8 @@ int qemuDomainAttachHostDevice(struct qemud_driver *driver,
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityHostdevLabel &&
driver->securityDriver->domainSetSecurityHostdevLabel(driver->securityDriver,
vm, hostdev) < 0)
if (virSecurityManagerSetHostdevLabel(driver->securityManager,
vm, hostdev) < 0)
return -1;
switch (hostdev->source.subsys.type) {
@ -1008,10 +988,8 @@ int qemuDomainAttachHostDevice(struct qemud_driver *driver,
return 0;
error:
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityHostdevLabel &&
driver->securityDriver->domainRestoreSecurityHostdevLabel(driver->securityDriver,
vm, hostdev) < 0)
if (virSecurityManagerRestoreHostdevLabel(driver->securityManager,
vm, hostdev) < 0)
VIR_WARN0("Unable to restore host device labelling on hotplug fail");
return -1;
@ -1183,10 +1161,8 @@ int qemuDomainDetachPciDiskDevice(struct qemud_driver *driver,
virDomainDiskDefFree(detach);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, dev->data.disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, dev->data.disk) < 0)
VIR_WARN("Unable to restore security label on %s", dev->data.disk->src);
if (cgroup != NULL) {
@ -1263,10 +1239,8 @@ int qemuDomainDetachSCSIDiskDevice(struct qemud_driver *driver,
virDomainDiskDefFree(detach);
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityImageLabel &&
driver->securityDriver->domainRestoreSecurityImageLabel(driver->securityDriver,
vm, dev->data.disk) < 0)
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm, dev->data.disk) < 0)
VIR_WARN("Unable to restore security label on %s", dev->data.disk->src);
if (cgroup != NULL) {
@ -1699,10 +1673,8 @@ int qemuDomainDetachHostDevice(struct qemud_driver *driver,
return -1;
}
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSecurityHostdevLabel &&
driver->securityDriver->domainRestoreSecurityHostdevLabel(driver->securityDriver,
vm, dev->data.hostdev) < 0)
if (virSecurityManagerRestoreHostdevLabel(driver->securityManager,
vm, dev->data.hostdev) < 0)
VIR_WARN0("Failed to restore host device labelling");
return ret;

576
src/qemu/qemu_security_dac.c
View File

@ -1,576 +0,0 @@
/*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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.
*
* QEMU POSIX DAC security driver
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "qemu_security_dac.h"
#include "qemu_conf.h"
#include "datatypes.h"
#include "virterror_internal.h"
#include "util.h"
#include "memory.h"
#include "logging.h"
#include "pci.h"
#include "hostusb.h"
#include "storage_file.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
static struct qemud_driver *driver;
void qemuSecurityDACSetDriver(struct qemud_driver *newdriver)
{
driver = newdriver;
}
static int
qemuSecurityDACSetOwnership(const char *path, int uid, int gid)
{
VIR_INFO("Setting DAC user and group on '%s' to '%d:%d'", path, uid, gid);
if (chown(path, uid, gid) < 0) {
struct stat sb;
int chown_errno = errno;
if (stat(path, &sb) >= 0) {
if (sb.st_uid == uid &&
sb.st_gid == gid) {
/* It's alright, there's nothing to change anyway. */
return 0;
}
}
if (chown_errno == EOPNOTSUPP) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not supported by filesystem",
uid, gid, path);
} else if (chown_errno == EPERM) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not permitted",
uid, gid, path);
} else if (chown_errno == EROFS) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not possible on readonly filesystem",
uid, gid, path);
} else {
virReportSystemError(chown_errno,
_("unable to set user and group to '%d:%d' on '%s'"),
uid, gid, path);
return -1;
}
}
return 0;
}
static int
qemuSecurityDACRestoreSecurityFileLabel(const char *path)
{
struct stat buf;
int rc = -1;
char *newpath = NULL;
VIR_INFO("Restoring DAC user and group on '%s'", path);
if (virFileResolveLink(path, &newpath) < 0) {
virReportSystemError(errno,
_("cannot resolve symlink %s"), path);
goto err;
}
if (stat(newpath, &buf) != 0)
goto err;
/* XXX record previous ownership */
rc = qemuSecurityDACSetOwnership(newpath, 0, 0);
err:
VIR_FREE(newpath);
return rc;
}
static int
qemuSecurityDACSetSecurityFileLabel(virDomainDiskDefPtr disk ATTRIBUTE_UNUSED,
const char *path,
size_t depth ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
return qemuSecurityDACSetOwnership(path, driver->user, driver->group);
}
static int
qemuSecurityDACSetSecurityImageLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk)
{
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
return virDomainDiskDefForeachPath(disk,
driver->allowDiskFormatProbing,
false,
qemuSecurityDACSetSecurityFileLabel,
NULL);
}
static int
qemuSecurityDACRestoreSecurityImageLabelInt(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk,
int migrated)
{
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
/* Don't restore labels on readoly/shared disks, because
* other VMs may still be accessing these
* Alternatively we could iterate over all running
* domains and try to figure out if it is in use, but
* this would not work for clustered filesystems, since
* we can't see running VMs using the file on other nodes
* Safest bet is thus to skip the restore step.
*/
if (disk->readonly || disk->shared)
return 0;
if (!disk->src || disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)
return 0;
/* If we have a shared FS & doing migrated, we must not
* change ownership, because that kills access on the
* destination host which is sub-optimal for the guest
* VM's I/O attempts :-)
*/
if (migrated) {
int rc = virStorageFileIsSharedFS(disk->src);
if (rc < 0)
return -1;
if (rc == 1) {
VIR_DEBUG("Skipping image label restore on %s because FS is shared",
disk->src);
return 0;
}
}
return qemuSecurityDACRestoreSecurityFileLabel(disk->src);
}
static int
qemuSecurityDACRestoreSecurityImageLabel(virSecurityDriverPtr drv,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
return qemuSecurityDACRestoreSecurityImageLabelInt(drv, vm, disk, 0);
}
static int
qemuSecurityDACSetSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return qemuSecurityDACSetOwnership(file, driver->user, driver->group);
}
static int
qemuSecurityDACSetSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return qemuSecurityDACSetOwnership(file, driver->user, driver->group);
}
static int
qemuSecurityDACSetSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
int ret = -1;
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
if (dev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
return 0;
switch (dev->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: {
usbDevice *usb = usbGetDevice(dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device);
if (!usb)
goto done;
ret = usbDeviceFileIterate(usb, qemuSecurityDACSetSecurityUSBLabel, vm);
usbFreeDevice(usb);
break;
}
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: {
pciDevice *pci = pciGetDevice(dev->source.subsys.u.pci.domain,
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
if (!pci)
goto done;
ret = pciDeviceFileIterate(pci, qemuSecurityDACSetSecurityPCILabel, vm);
pciFreeDevice(pci);
break;
}
default:
ret = 0;
break;
}
done:
return ret;
}
static int
qemuSecurityDACRestoreSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return qemuSecurityDACRestoreSecurityFileLabel(file);
}
static int
qemuSecurityDACRestoreSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return qemuSecurityDACRestoreSecurityFileLabel(file);
}
static int
qemuSecurityDACRestoreSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr dev)
{
int ret = -1;
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
if (dev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
return 0;
switch (dev->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: {
usbDevice *usb = usbGetDevice(dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device);
if (!usb)
goto done;
ret = usbDeviceFileIterate(usb, qemuSecurityDACRestoreSecurityUSBLabel, NULL);
usbFreeDevice(usb);
break;
}
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: {
pciDevice *pci = pciGetDevice(dev->source.subsys.u.pci.domain,
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
if (!pci)
goto done;
ret = pciDeviceFileIterate(pci, qemuSecurityDACRestoreSecurityPCILabel, NULL);
pciFreeDevice(pci);
break;
}
default:
ret = 0;
break;
}
done:
return ret;
}
static int
qemuSecurityDACSetChardevLabel(virDomainObjPtr vm,
virDomainChrDefPtr dev)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
char *in = NULL, *out = NULL;
int ret = -1;
if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC)
return 0;
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
ret = qemuSecurityDACSetOwnership(dev->data.file.path, driver->user, driver->group);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
if ((virAsprintf(&in, "%s.in", dev->data.file.path) < 0) ||
(virAsprintf(&out, "%s.out", dev->data.file.path) < 0)) {
virReportOOMError();
goto done;
}
if ((qemuSecurityDACSetOwnership(in, driver->user, driver->group) < 0) ||
(qemuSecurityDACSetOwnership(out, driver->user, driver->group) < 0))
goto done;
ret = 0;
break;
default:
ret = 0;
break;
}
done:
VIR_FREE(in);
VIR_FREE(out);
return ret;
}
static int
qemuSecurityDACRestoreChardevLabel(virDomainObjPtr vm,
virDomainChrDefPtr dev)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
char *in = NULL, *out = NULL;
int ret = -1;
if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC)
return 0;
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
ret = qemuSecurityDACRestoreSecurityFileLabel(dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
if ((virAsprintf(&out, "%s.out", dev->data.file.path) < 0) ||
(virAsprintf(&in, "%s.in", dev->data.file.path) < 0)) {
virReportOOMError();
goto done;
}
if ((qemuSecurityDACRestoreSecurityFileLabel(out) < 0) ||
(qemuSecurityDACRestoreSecurityFileLabel(in) < 0))
goto done;
ret = 0;
break;
default:
ret = 0;
break;
}
done:
VIR_FREE(in);
VIR_FREE(out);
return ret;
}
static int
qemuSecurityDACRestoreChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainChrDefPtr dev,
void *opaque)
{
virDomainObjPtr vm = opaque;
return qemuSecurityDACRestoreChardevLabel(vm, dev);
}
static int
qemuSecurityDACRestoreSecurityAllLabel(virSecurityDriverPtr drv,
virDomainObjPtr vm,
int migrated)
{
int i;
int rc = 0;
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
VIR_DEBUG("Restoring security label on %s migrated=%d",
vm->def->name, migrated);
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (qemuSecurityDACRestoreSecurityHostdevLabel(drv,
vm,
vm->def->hostdevs[i]) < 0)
rc = -1;
}
for (i = 0 ; i < vm->def->ndisks ; i++) {
if (qemuSecurityDACRestoreSecurityImageLabelInt(drv,
vm,
vm->def->disks[i],
migrated) < 0)
rc = -1;
}
if (virDomainChrDefForeach(vm->def,
false,
qemuSecurityDACRestoreChardevCallback,
vm) < 0)
rc = -1;
if (vm->def->os.kernel &&
qemuSecurityDACRestoreSecurityFileLabel(vm->def->os.kernel) < 0)
rc = -1;
if (vm->def->os.initrd &&
qemuSecurityDACRestoreSecurityFileLabel(vm->def->os.initrd) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityDACSetChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainChrDefPtr dev,
void *opaque)
{
virDomainObjPtr vm = opaque;
return qemuSecurityDACSetChardevLabel(vm, dev);
}
static int
qemuSecurityDACSetSecurityAllLabel(virSecurityDriverPtr drv,
virDomainObjPtr vm,
const char *stdin_path ATTRIBUTE_UNUSED)
{
int i;
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
for (i = 0 ; i < vm->def->ndisks ; i++) {
/* XXX fixme - we need to recursively label the entriy tree :-( */
if (vm->def->disks[i]->type == VIR_DOMAIN_DISK_TYPE_DIR)
continue;
if (qemuSecurityDACSetSecurityImageLabel(drv,
vm,
vm->def->disks[i]) < 0)
return -1;
}
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (qemuSecurityDACSetSecurityHostdevLabel(drv,
vm,
vm->def->hostdevs[i]) < 0)
return -1;
}
if (virDomainChrDefForeach(vm->def,
true,
qemuSecurityDACSetChardevCallback,
vm) < 0)
return -1;
if (vm->def->os.kernel &&
qemuSecurityDACSetOwnership(vm->def->os.kernel,
driver->user,
driver->group) < 0)
return -1;
if (vm->def->os.initrd &&
qemuSecurityDACSetOwnership(vm->def->os.initrd,
driver->user,
driver->group) < 0)
return -1;
return 0;
}
static int
qemuSecurityDACSetSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile)
{
if (!driver->privileged)
return 0;
return qemuSecurityDACSetOwnership(savefile, driver->user, driver->group);
}
static int
qemuSecurityDACRestoreSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile)
{
if (!driver->privileged || !driver->dynamicOwnership)
return 0;
return qemuSecurityDACRestoreSecurityFileLabel(savefile);
}
static int
qemuSecurityDACSetProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
DEBUG("Dropping privileges of VM to %d:%d", driver->user, driver->group);
if (!driver->privileged)
return 0;
if (virSetUIDGID(driver->user, driver->group) < 0)
return -1;
return 0;
}
virSecurityDriver qemuDACSecurityDriver = {
.name = "qemuDAC",
.domainSetSecurityProcessLabel = qemuSecurityDACSetProcessLabel,
.domainSetSecurityImageLabel = qemuSecurityDACSetSecurityImageLabel,
.domainRestoreSecurityImageLabel = qemuSecurityDACRestoreSecurityImageLabel,
.domainSetSecurityAllLabel = qemuSecurityDACSetSecurityAllLabel,
.domainRestoreSecurityAllLabel = qemuSecurityDACRestoreSecurityAllLabel,
.domainSetSecurityHostdevLabel = qemuSecurityDACSetSecurityHostdevLabel,
.domainRestoreSecurityHostdevLabel = qemuSecurityDACRestoreSecurityHostdevLabel,
.domainSetSavedStateLabel = qemuSecurityDACSetSavedStateLabel,
.domainRestoreSavedStateLabel = qemuSecurityDACRestoreSavedStateLabel,
};

22
src/qemu/qemu_security_dac.h
View File

@ -1,22 +0,0 @@
/*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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.
*
* QEMU POSIX DAC security driver
*/
#include "security/security_driver.h"
#include "qemu_conf.h"
#ifndef __QEMU_SECURITY_DAC
# define __QEMU_SECURITY_DAC
extern virSecurityDriver qemuDACSecurityDriver;
void qemuSecurityDACSetDriver(struct qemud_driver *driver);
#endif /* __QEMU_SECURITY_DAC */

418
src/qemu/qemu_security_stacked.c
View File

@ -1,418 +0,0 @@
/*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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.
*
* QEMU stacked security driver
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "qemu_security_stacked.h"
#include "qemu_conf.h"
#include "datatypes.h"
#include "virterror_internal.h"
#include "util.h"
#include "memory.h"
#include "logging.h"
#include "pci.h"
#include "hostusb.h"
#include "storage_file.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
static struct qemud_driver *driver;
void qemuSecurityStackedSetDriver(struct qemud_driver *newdriver)
{
driver = newdriver;
}
static int
qemuSecurityStackedVerify(virDomainDefPtr def)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSecurityVerify &&
driver->securitySecondaryDriver->domainSecurityVerify(def) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSecurityVerify &&
driver->securityPrimaryDriver->domainSecurityVerify(def) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedGenLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainGenSecurityLabel &&
driver->securitySecondaryDriver->domainGenSecurityLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainGenSecurityLabel &&
driver->securityPrimaryDriver->domainGenSecurityLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedReleaseLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainReleaseSecurityLabel &&
driver->securitySecondaryDriver->domainReleaseSecurityLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainReleaseSecurityLabel &&
driver->securityPrimaryDriver->domainReleaseSecurityLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedReserveLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainReserveSecurityLabel &&
driver->securitySecondaryDriver->domainReserveSecurityLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainReserveSecurityLabel &&
driver->securityPrimaryDriver->domainReserveSecurityLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetSecurityImageLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSecurityImageLabel &&
driver->securitySecondaryDriver->domainSetSecurityImageLabel(driver->securitySecondaryDriver,
vm, disk) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSecurityImageLabel &&
driver->securityPrimaryDriver->domainSetSecurityImageLabel(driver->securityPrimaryDriver,
vm, disk) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedRestoreSecurityImageLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainRestoreSecurityImageLabel &&
driver->securitySecondaryDriver->domainRestoreSecurityImageLabel(driver->securitySecondaryDriver,
vm, disk) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainRestoreSecurityImageLabel &&
driver->securityPrimaryDriver->domainRestoreSecurityImageLabel(driver->securityPrimaryDriver,
vm, disk) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSecurityHostdevLabel &&
driver->securitySecondaryDriver->domainSetSecurityHostdevLabel(driver->securitySecondaryDriver,
vm, dev) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSecurityHostdevLabel &&
driver->securityPrimaryDriver->domainSetSecurityHostdevLabel(driver->securityPrimaryDriver,
vm, dev) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedRestoreSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainRestoreSecurityHostdevLabel &&
driver->securitySecondaryDriver->domainRestoreSecurityHostdevLabel(driver->securitySecondaryDriver,
vm, dev) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainRestoreSecurityHostdevLabel &&
driver->securityPrimaryDriver->domainRestoreSecurityHostdevLabel(driver->securityPrimaryDriver,
vm, dev) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char *stdin_path)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSecurityAllLabel &&
driver->securitySecondaryDriver->domainSetSecurityAllLabel(driver->securitySecondaryDriver,
vm, stdin_path) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSecurityAllLabel &&
driver->securityPrimaryDriver->domainSetSecurityAllLabel(driver->securityPrimaryDriver,
vm, stdin_path) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
int migrated)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainRestoreSecurityAllLabel &&
driver->securitySecondaryDriver->domainRestoreSecurityAllLabel(driver->securitySecondaryDriver,
vm, migrated) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainRestoreSecurityAllLabel &&
driver->securityPrimaryDriver->domainRestoreSecurityAllLabel(driver->securityPrimaryDriver,
vm, migrated) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char *savefile)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSavedStateLabel &&
driver->securitySecondaryDriver->domainSetSavedStateLabel(driver->securitySecondaryDriver,
vm, savefile) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSavedStateLabel &&
driver->securityPrimaryDriver->domainSetSavedStateLabel(driver->securityPrimaryDriver,
vm, savefile) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedRestoreSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char *savefile)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainRestoreSavedStateLabel &&
driver->securitySecondaryDriver->domainRestoreSavedStateLabel(driver->securitySecondaryDriver,
vm, savefile) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainRestoreSavedStateLabel &&
driver->securityPrimaryDriver->domainRestoreSavedStateLabel(driver->securityPrimaryDriver,
vm, savefile) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSecurityProcessLabel &&
driver->securitySecondaryDriver->domainSetSecurityProcessLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSecurityProcessLabel &&
driver->securityPrimaryDriver->domainSetSecurityProcessLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedGetProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virSecurityLabelPtr seclabel)
{
int rc = 0;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainGetSecurityProcessLabel &&
driver->securityPrimaryDriver->domainGetSecurityProcessLabel(driver->securityPrimaryDriver,
vm,
seclabel) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedSetSocketLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainSetSecuritySocketLabel &&
driver->securityPrimaryDriver->domainSetSecuritySocketLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainSetSecuritySocketLabel &&
driver->securitySecondaryDriver->domainSetSecuritySocketLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
return rc;
}
static int
qemuSecurityStackedClearSocketLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = 0;
if (driver->securitySecondaryDriver &&
driver->securitySecondaryDriver->domainClearSecuritySocketLabel &&
driver->securitySecondaryDriver->domainClearSecuritySocketLabel(driver->securitySecondaryDriver,
vm) < 0)
rc = -1;
if (driver->securityPrimaryDriver &&
driver->securityPrimaryDriver->domainClearSecuritySocketLabel &&
driver->securityPrimaryDriver->domainClearSecuritySocketLabel(driver->securityPrimaryDriver,
vm) < 0)
rc = -1;
return rc;
}
virSecurityDriver qemuStackedSecurityDriver = {
.name = "qemuStacked",
.domainSecurityVerify = qemuSecurityStackedVerify,
.domainGenSecurityLabel = qemuSecurityStackedGenLabel,
.domainReleaseSecurityLabel = qemuSecurityStackedReleaseLabel,
.domainReserveSecurityLabel = qemuSecurityStackedReserveLabel,
.domainGetSecurityProcessLabel = qemuSecurityStackedGetProcessLabel,
.domainSetSecurityProcessLabel = qemuSecurityStackedSetProcessLabel,
.domainSetSecurityImageLabel = qemuSecurityStackedSetSecurityImageLabel,
.domainRestoreSecurityImageLabel = qemuSecurityStackedRestoreSecurityImageLabel,
.domainSetSecurityAllLabel = qemuSecurityStackedSetSecurityAllLabel,
.domainRestoreSecurityAllLabel = qemuSecurityStackedRestoreSecurityAllLabel,
.domainSetSecurityHostdevLabel = qemuSecurityStackedSetSecurityHostdevLabel,
.domainRestoreSecurityHostdevLabel = qemuSecurityStackedRestoreSecurityHostdevLabel,
.domainSetSavedStateLabel = qemuSecurityStackedSetSavedStateLabel,
.domainRestoreSavedStateLabel = qemuSecurityStackedRestoreSavedStateLabel,
.domainClearSecuritySocketLabel = qemuSecurityStackedClearSocketLabel,
.domainSetSecuritySocketLabel = qemuSecurityStackedSetSocketLabel,
};

22
src/qemu/qemu_security_stacked.h
View File

@ -1,22 +0,0 @@
/*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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.
*
* QEMU stacked security driver
*/
#include "security/security_driver.h"
#include "qemu_conf.h"
#ifndef __QEMU_SECURITY_STACKED
# define __QEMU_SECURITY_STACKED
extern virSecurityDriver qemuStackedSecurityDriver;
void qemuSecurityStackedSetDriver(struct qemud_driver *driver);
#endif /* __QEMU_SECURITY_DAC */

152
src/security/security_apparmor.c
View File

@ -1,4 +1,3 @@
/*
* AppArmor security driver for libvirt
* Copyright (C) 2009-2010 Canonical Ltd.
@ -28,7 +27,6 @@
#include "internal.h"
#include "security_driver.h"
#include "security_apparmor.h"
#include "util.h"
#include "memory.h"
@ -47,7 +45,7 @@
/* Data structure to pass to *FileIterate so we have everything we need */
struct SDPDOP {
virSecurityDriverPtr drv;
virSecurityManagerPtr mgr;
virDomainObjPtr vm;
};
@ -158,7 +156,7 @@ profile_status_file(const char *str)
* load (add) a profile. Will create one if necessary
*/
static int
load_profile(virSecurityDriverPtr drv,
load_profile(virSecurityManagerPtr mgr,
const char *profile,
virDomainObjPtr vm,
const char *fn,
@ -169,7 +167,7 @@ load_profile(virSecurityDriverPtr drv,
char *xml = NULL;
int pipefd[2];
pid_t child;
const char *probe = virSecurityDriverGetAllowDiskFormatProbing(drv)
const char *probe = virSecurityManagerGetAllowDiskFormatProbing(mgr)
? "1" : "0";
if (pipe(pipefd) < -1) {
@ -300,7 +298,7 @@ cleanup:
* NULL.
*/
static int
reload_profile(virSecurityDriverPtr drv,
reload_profile(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *fn,
bool append)
@ -317,7 +315,7 @@ reload_profile(virSecurityDriverPtr drv,
/* Update the profile only if it is loaded */
if (profile_loaded(secdef->imagelabel) >= 0) {
if (load_profile(drv, secdef->imagelabel, vm, fn, append) < 0) {
if (load_profile(mgr, secdef->imagelabel, vm, fn, append) < 0) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot update AppArmor profile "
"\'%s\'"),
@ -340,7 +338,7 @@ AppArmorSetSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
struct SDPDOP *ptr = opaque;
virDomainObjPtr vm = ptr->vm;
if (reload_profile(ptr->drv, vm, file, true) < 0) {
if (reload_profile(ptr->mgr, vm, file, true) < 0) {
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot update AppArmor profile "
@ -358,7 +356,7 @@ AppArmorSetSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
struct SDPDOP *ptr = opaque;
virDomainObjPtr vm = ptr->vm;
if (reload_profile(ptr->drv, vm, file, true) < 0) {
if (reload_profile(ptr->mgr, vm, file, true) < 0) {
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot update AppArmor profile "
@ -371,7 +369,7 @@ AppArmorSetSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
/* Called on libvirtd startup to see if AppArmor is available */
static int
AppArmorSecurityDriverProbe(void)
AppArmorSecurityManagerProbe(void)
{
char *template = NULL;
int rc = SECURITY_DRIVER_DISABLE;
@ -403,21 +401,37 @@ AppArmorSecurityDriverProbe(void)
* currently not used.
*/
static int
AppArmorSecurityDriverOpen(virSecurityDriverPtr drv,
bool allowDiskFormatProbing)
AppArmorSecurityManagerOpen(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
virSecurityDriverSetDOI(drv, SECURITY_APPARMOR_VOID_DOI);
virSecurityDriverSetAllowDiskFormatProbing(drv, allowDiskFormatProbing);
return 0;
}
static int
AppArmorSecurityManagerClose(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static const char *
AppArmorSecurityManagerGetModel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return SECURITY_APPARMOR_NAME;
}
static const char *
AppArmorSecurityManagerGetDOI(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return SECURITY_APPARMOR_VOID_DOI;
}
/* Currently called in qemudStartVMDaemon to setup a 'label'. We look for and
* use a profile based on the UUID, otherwise create one based on a template.
* Keep in mind that this is called on 'start' with RestoreSecurityLabel being
* called on shutdown.
*/
static int
AppArmorGenSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
AppArmorGenSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = -1;
@ -472,7 +486,7 @@ AppArmorGenSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
}
static int
AppArmorSetSecurityAllLabel(virSecurityDriverPtr drv,
AppArmorSetSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm, const char *stdin_path)
{
if (vm->def->seclabel.type == VIR_DOMAIN_SECLABEL_STATIC)
@ -480,7 +494,7 @@ AppArmorSetSecurityAllLabel(virSecurityDriverPtr drv,
/* if the profile is not already loaded, then load one */
if (profile_loaded(vm->def->seclabel.label) < 0) {
if (load_profile(drv, vm->def->seclabel.label, vm, stdin_path,
if (load_profile(mgr, vm->def->seclabel.label, vm, stdin_path,
false) < 0) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot generate AppArmor profile "
@ -496,7 +510,7 @@ AppArmorSetSecurityAllLabel(virSecurityDriverPtr drv,
* running.
*/
static int
AppArmorGetSecurityProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
AppArmorGetSecurityProcessLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virSecurityLabelPtr sec)
{
@ -530,7 +544,7 @@ AppArmorGetSecurityProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
* more details. Currently called via qemudShutdownVMDaemon.
*/
static int
AppArmorReleaseSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
AppArmorReleaseSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
@ -544,7 +558,7 @@ AppArmorReleaseSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
static int
AppArmorRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
AppArmorRestoreSecurityAllLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
int migrated ATTRIBUTE_UNUSED)
{
@ -565,7 +579,7 @@ AppArmorRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
* LOCALSTATEDIR/log/libvirt/qemu/<vm name>.log
*/
static int
AppArmorSetSecurityProcessLabel(virSecurityDriverPtr drv, virDomainObjPtr vm)
AppArmorSetSecurityProcessLabel(virSecurityManagerPtr mgr, virDomainObjPtr vm)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
int rc = -1;
@ -574,12 +588,12 @@ AppArmorSetSecurityProcessLabel(virSecurityDriverPtr drv, virDomainObjPtr vm)
if ((profile_name = get_profile_name(vm)) == NULL)
return rc;
if (STRNEQ(drv->name, secdef->model)) {
if (STRNEQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"\'%s\' model configured for domain, but "
"hypervisor driver is \'%s\'."),
secdef->model, drv->name);
secdef->model, virSecurityManagerGetModel(mgr));
if (use_apparmor() > 0)
goto clean;
}
@ -597,19 +611,33 @@ AppArmorSetSecurityProcessLabel(virSecurityDriverPtr drv, virDomainObjPtr vm)
return rc;
}
static int
AppArmorSetSecuritySocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
AppArmorClearSecuritySocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
/* Called when hotplugging */
static int
AppArmorRestoreSecurityImageLabel(virSecurityDriverPtr drv,
AppArmorRestoreSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk ATTRIBUTE_UNUSED)
{
return reload_profile(drv, vm, NULL, false);
return reload_profile(mgr, vm, NULL, false);
}
/* Called when hotplugging */
static int
AppArmorSetSecurityImageLabel(virSecurityDriverPtr drv,
AppArmorSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm, virDomainDiskDefPtr disk)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
@ -635,7 +663,7 @@ AppArmorSetSecurityImageLabel(virSecurityDriverPtr drv,
/* update the profile only if it is loaded */
if (profile_loaded(secdef->imagelabel) >= 0) {
if (load_profile(drv, secdef->imagelabel, vm, disk->src,
if (load_profile(mgr, secdef->imagelabel, vm, disk->src,
false) < 0) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot update AppArmor profile "
@ -654,7 +682,8 @@ AppArmorSetSecurityImageLabel(virSecurityDriverPtr drv,
}
static int
AppArmorSecurityVerify(virDomainDefPtr def)
AppArmorSecurityVerify(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainDefPtr def)
{
const virSecurityLabelDefPtr secdef = &def->seclabel;
@ -670,7 +699,7 @@ AppArmorSecurityVerify(virDomainDefPtr def)
}
static int
AppArmorReserveSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
AppArmorReserveSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
/* NOOP. Nothing to reserve with AppArmor */
@ -678,7 +707,7 @@ AppArmorReserveSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
}
static int
AppArmorSetSecurityHostdevLabel(virSecurityDriverPtr drv,
AppArmorSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
@ -698,7 +727,7 @@ AppArmorSetSecurityHostdevLabel(virSecurityDriverPtr drv,
if (VIR_ALLOC(ptr) < 0)
return -1;
ptr->drv = drv;
ptr->mgr = mgr;
ptr->vm = vm;
switch (dev->source.subsys.type) {
@ -740,7 +769,7 @@ done:
static int
AppArmorRestoreSecurityHostdevLabel(virSecurityDriverPtr drv,
AppArmorRestoreSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev ATTRIBUTE_UNUSED)
@ -749,42 +778,57 @@ AppArmorRestoreSecurityHostdevLabel(virSecurityDriverPtr drv,
if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC)
return 0;
return reload_profile(drv, vm, NULL, false);
return reload_profile(mgr, vm, NULL, false);
}
static int
AppArmorSetSavedStateLabel(virSecurityDriverPtr drv,
AppArmorSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile)
{
return reload_profile(drv, vm, savefile, true);
return reload_profile(mgr, vm, savefile, true);
}
static int
AppArmorRestoreSavedStateLabel(virSecurityDriverPtr drv,
AppArmorRestoreSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile ATTRIBUTE_UNUSED)
{
return reload_profile(drv, vm, NULL, false);
return reload_profile(mgr, vm, NULL, false);
}
virSecurityDriver virAppArmorSecurityDriver = {
.name = SECURITY_APPARMOR_NAME,
.probe = AppArmorSecurityDriverProbe,
.open = AppArmorSecurityDriverOpen,
.domainSecurityVerify = AppArmorSecurityVerify,
.domainSetSecurityImageLabel = AppArmorSetSecurityImageLabel,
.domainRestoreSecurityImageLabel = AppArmorRestoreSecurityImageLabel,
.domainGenSecurityLabel = AppArmorGenSecurityLabel,
.domainReserveSecurityLabel = AppArmorReserveSecurityLabel,
.domainReleaseSecurityLabel = AppArmorReleaseSecurityLabel,
.domainGetSecurityProcessLabel = AppArmorGetSecurityProcessLabel,
.domainSetSecurityProcessLabel = AppArmorSetSecurityProcessLabel,
.domainRestoreSecurityAllLabel = AppArmorRestoreSecurityAllLabel,
.domainSetSecurityAllLabel = AppArmorSetSecurityAllLabel,
.domainSetSecurityHostdevLabel = AppArmorSetSecurityHostdevLabel,
.domainRestoreSecurityHostdevLabel = AppArmorRestoreSecurityHostdevLabel,
.domainSetSavedStateLabel = AppArmorSetSavedStateLabel,
.domainRestoreSavedStateLabel = AppArmorRestoreSavedStateLabel,
0,
SECURITY_APPARMOR_NAME,
AppArmorSecurityManagerProbe,
AppArmorSecurityManagerOpen,
AppArmorSecurityManagerClose,
AppArmorSecurityManagerGetModel,
AppArmorSecurityManagerGetDOI,
AppArmorSecurityVerify,
AppArmorSetSecurityImageLabel,
AppArmorRestoreSecurityImageLabel,
AppArmorSetSecuritySocketLabel,
AppArmorClearSecuritySocketLabel,
AppArmorGenSecurityLabel,
AppArmorReserveSecurityLabel,
AppArmorReleaseSecurityLabel,
AppArmorGetSecurityProcessLabel,
AppArmorSetSecurityProcessLabel,
AppArmorSetSecurityAllLabel,
AppArmorRestoreSecurityAllLabel,
AppArmorSetSecurityHostdevLabel,
AppArmorRestoreSecurityHostdevLabel,
AppArmorSetSavedStateLabel,
AppArmorRestoreSavedStateLabel,
};

2
src/security/security_apparmor.h
View File

@ -14,6 +14,8 @@
#ifndef __VIR_SECURITY_APPARMOR_H__
# define __VIR_SECURITY_APPARMOR_H__
# include "security_driver.h"
extern virSecurityDriver virAppArmorSecurityDriver;
# define AA_PREFIX "libvirt-"

713
src/security/security_dac.c Normal file
View File

@ -0,0 +1,713 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
* POSIX DAC security driver
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "security_dac.h"
#include "virterror_internal.h"
#include "util.h"
#include "memory.h"
#include "logging.h"
#include "pci.h"
#include "hostusb.h"
#include "storage_file.h"
#define VIR_FROM_THIS VIR_FROM_SECURITY
typedef struct _virSecurityDACData virSecurityDACData;
typedef virSecurityDACData *virSecurityDACDataPtr;
struct _virSecurityDACData {
uid_t user;
gid_t group;
bool dynamicOwnership;
};
void virSecurityDACSetUser(virSecurityManagerPtr mgr,
uid_t user)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
priv->user = user;
}
void virSecurityDACSetGroup(virSecurityManagerPtr mgr,
gid_t group)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
priv->group = group;
}
void virSecurityDACSetDynamicOwnership(virSecurityManagerPtr mgr,
bool dynamicOwnership)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
priv->dynamicOwnership = dynamicOwnership;
}
static virSecurityDriverStatus
virSecurityDACProbe(void)
{
return SECURITY_DRIVER_ENABLE;
}
static int
virSecurityDACOpen(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACClose(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static const char * virSecurityDACGetModel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return "dac";
}
static const char * virSecurityDACGetDOI(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return "0";
}
static int
virSecurityDACSetOwnership(const char *path, int uid, int gid)
{
VIR_INFO("Setting DAC user and group on '%s' to '%d:%d'", path, uid, gid);
if (chown(path, uid, gid) < 0) {
struct stat sb;
int chown_errno = errno;
if (stat(path, &sb) >= 0) {
if (sb.st_uid == uid &&
sb.st_gid == gid) {
/* It's alright, there's nothing to change anyway. */
return 0;
}
}
if (chown_errno == EOPNOTSUPP) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not supported by filesystem",
uid, gid, path);
} else if (chown_errno == EPERM) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not permitted",
uid, gid, path);
} else if (chown_errno == EROFS) {
VIR_INFO("Setting user and group to '%d:%d' on '%s' not possible on readonly filesystem",
uid, gid, path);
} else {
virReportSystemError(chown_errno,
_("unable to set user and group to '%d:%d' on '%s'"),
uid, gid, path);
return -1;
}
}
return 0;
}
static int
virSecurityDACRestoreSecurityFileLabel(const char *path)
{
struct stat buf;
int rc = -1;
char *newpath = NULL;
VIR_INFO("Restoring DAC user and group on '%s'", path);
if (virFileResolveLink(path, &newpath) < 0) {
virReportSystemError(errno,
_("cannot resolve symlink %s"), path);
goto err;
}
if (stat(newpath, &buf) != 0)
goto err;
/* XXX record previous ownership */
rc = virSecurityDACSetOwnership(newpath, 0, 0);
err:
VIR_FREE(newpath);
return rc;
}
static int
virSecurityDACSetSecurityFileLabel(virDomainDiskDefPtr disk ATTRIBUTE_UNUSED,
const char *path,
size_t depth ATTRIBUTE_UNUSED,
void *opaque)
{
virSecurityManagerPtr mgr = opaque;
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityDACSetOwnership(path, priv->user, priv->group);
}
static int
virSecurityDACSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
if (!priv->dynamicOwnership)
return 0;
return virDomainDiskDefForeachPath(disk,
virSecurityManagerGetAllowDiskFormatProbing(mgr),
false,
virSecurityDACSetSecurityFileLabel,
mgr);
}
static int
virSecurityDACRestoreSecurityImageLabelInt(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk,
int migrated)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
if (!priv->dynamicOwnership)
return 0;
/* Don't restore labels on readoly/shared disks, because
* other VMs may still be accessing these
* Alternatively we could iterate over all running
* domains and try to figure out if it is in use, but
* this would not work for clustered filesystems, since
* we can't see running VMs using the file on other nodes
* Safest bet is thus to skip the restore step.
*/
if (disk->readonly || disk->shared)
return 0;
if (!disk->src)
return 0;
/* If we have a shared FS & doing migrated, we must not
* change ownership, because that kills access on the
* destination host which is sub-optimal for the guest
* VM's I/O attempts :-)
*/
if (migrated) {
int rc = virStorageFileIsSharedFS(disk->src);
if (rc < 0)
return -1;
if (rc == 1) {
VIR_DEBUG("Skipping image label restore on %s because FS is shared",
disk->src);
return 0;
}
}
return virSecurityDACRestoreSecurityFileLabel(disk->src);
}
static int
virSecurityDACRestoreSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
return virSecurityDACRestoreSecurityImageLabelInt(mgr, vm, disk, 0);
}
static int
virSecurityDACSetSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque)
{
virSecurityManagerPtr mgr = opaque;
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityDACSetOwnership(file, priv->user, priv->group);
}
static int
virSecurityDACSetSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque)
{
virSecurityManagerPtr mgr = opaque;
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityDACSetOwnership(file, priv->user, priv->group);
}
static int
virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr dev)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int ret = -1;
if (!priv->dynamicOwnership)
return 0;
if (dev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
return 0;
switch (dev->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: {
usbDevice *usb = usbGetDevice(dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device);
if (!usb)
goto done;
ret = usbDeviceFileIterate(usb, virSecurityDACSetSecurityUSBLabel, mgr);
usbFreeDevice(usb);
break;
}
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: {
pciDevice *pci = pciGetDevice(dev->source.subsys.u.pci.domain,
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
if (!pci)
goto done;
ret = pciDeviceFileIterate(pci, virSecurityDACSetSecurityPCILabel, mgr);
pciFreeDevice(pci);
break;
}
default:
ret = 0;
break;
}
done:
return ret;
}
static int
virSecurityDACRestoreSecurityPCILabel(pciDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return virSecurityDACRestoreSecurityFileLabel(file);
}
static int
virSecurityDACRestoreSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
const char *file,
void *opaque ATTRIBUTE_UNUSED)
{
return virSecurityDACRestoreSecurityFileLabel(file);
}
static int
virSecurityDACRestoreSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr dev)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int ret = -1;
if (!priv->dynamicOwnership)
return 0;
if (dev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
return 0;
switch (dev->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: {
usbDevice *usb = usbGetDevice(dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device);
if (!usb)
goto done;
ret = usbDeviceFileIterate(usb, virSecurityDACRestoreSecurityUSBLabel, mgr);
usbFreeDevice(usb);
break;
}
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: {
pciDevice *pci = pciGetDevice(dev->source.subsys.u.pci.domain,
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
if (!pci)
goto done;
ret = pciDeviceFileIterate(pci, virSecurityDACRestoreSecurityPCILabel, mgr);
pciFreeDevice(pci);
break;
}
default:
ret = 0;
break;
}
done:
return ret;
}
static int
virSecurityDACSetChardevLabel(virSecurityManagerPtr mgr,
virDomainChrDefPtr dev)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
char *in = NULL, *out = NULL;
int ret = -1;
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
ret = virSecurityDACSetOwnership(dev->data.file.path, priv->user, priv->group);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
if ((virAsprintf(&in, "%s.in", dev->data.file.path) < 0) ||
(virAsprintf(&out, "%s.out", dev->data.file.path) < 0)) {
virReportOOMError();
goto done;
}
if ((virSecurityDACSetOwnership(in, priv->user, priv->group) < 0) ||
(virSecurityDACSetOwnership(out, priv->user, priv->group) < 0))
goto done;
ret = 0;
break;
default:
ret = 0;
break;
}
done:
VIR_FREE(in);
VIR_FREE(out);
return ret;
}
static int
virSecurityDACRestoreChardevLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainChrDefPtr dev)
{
char *in = NULL, *out = NULL;
int ret = -1;
switch (dev->type) {
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
ret = virSecurityDACRestoreSecurityFileLabel(dev->data.file.path);
break;
case VIR_DOMAIN_CHR_TYPE_PIPE:
if ((virAsprintf(&out, "%s.out", dev->data.file.path) < 0) ||
(virAsprintf(&in, "%s.in", dev->data.file.path) < 0)) {
virReportOOMError();
goto done;
}
if ((virSecurityDACRestoreSecurityFileLabel(out) < 0) ||
(virSecurityDACRestoreSecurityFileLabel(in) < 0))
goto done;
ret = 0;
break;
default:
ret = 0;
break;
}
done:
VIR_FREE(in);
VIR_FREE(out);
return ret;
}
static int
virSecurityDACRestoreChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainChrDefPtr dev,
void *opaque)
{
virSecurityManagerPtr mgr = opaque;
return virSecurityDACRestoreChardevLabel(mgr, dev);
}
static int
virSecurityDACRestoreSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
int migrated)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int i;
int rc = 0;
if (!priv->dynamicOwnership)
return 0;
VIR_DEBUG("Restoring security label on %s migrated=%d",
vm->def->name, migrated);
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (virSecurityDACRestoreSecurityHostdevLabel(mgr,
vm,
vm->def->hostdevs[i]) < 0)
rc = -1;
}
for (i = 0 ; i < vm->def->ndisks ; i++) {
if (virSecurityDACRestoreSecurityImageLabelInt(mgr,
vm,
vm->def->disks[i],
migrated) < 0)
rc = -1;
}
if (virDomainChrDefForeach(vm->def,
false,
virSecurityDACRestoreChardevCallback,
vm) < 0)
rc = -1;
if (vm->def->os.kernel &&
virSecurityDACRestoreSecurityFileLabel(vm->def->os.kernel) < 0)
rc = -1;
if (vm->def->os.initrd &&
virSecurityDACRestoreSecurityFileLabel(vm->def->os.initrd) < 0)
rc = -1;
return rc;
}
static int
virSecurityDACSetChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainChrDefPtr dev,
void *opaque)
{
virSecurityManagerPtr mgr = opaque;
return virSecurityDACSetChardevLabel(mgr, dev);
}
static int
virSecurityDACSetSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *stdin_path ATTRIBUTE_UNUSED)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int i;
if (!priv->dynamicOwnership)
return 0;
for (i = 0 ; i < vm->def->ndisks ; i++) {
/* XXX fixme - we need to recursively label the entire tree :-( */
if (vm->def->disks[i]->type == VIR_DOMAIN_DISK_TYPE_DIR)
continue;
if (virSecurityDACSetSecurityImageLabel(mgr,
vm,
vm->def->disks[i]) < 0)
return -1;
}
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (virSecurityDACSetSecurityHostdevLabel(mgr,
vm,
vm->def->hostdevs[i]) < 0)
return -1;
}
if (virDomainChrDefForeach(vm->def,
true,
virSecurityDACSetChardevCallback,
vm) < 0)
return -1;
if (vm->def->os.kernel &&
virSecurityDACSetOwnership(vm->def->os.kernel,
priv->user,
priv->group) < 0)
return -1;
if (vm->def->os.initrd &&
virSecurityDACSetOwnership(vm->def->os.initrd,
priv->user,
priv->group) < 0)
return -1;
return 0;
}
static int
virSecurityDACSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityDACSetOwnership(savefile, priv->user, priv->group);
}
static int
virSecurityDACRestoreSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
if (!priv->dynamicOwnership)
return 0;
return virSecurityDACRestoreSecurityFileLabel(savefile);
}
static int
virSecurityDACSetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
DEBUG("Dropping privileges of VM to %d:%d", priv->user, priv->group);
if (virSetUIDGID(priv->user, priv->group) < 0)
return -1;
return 0;
}
static int
virSecurityDACVerify(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainDefPtr def ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACGenLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACReleaseLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACReserveLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACGetProcessLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virSecurityLabelPtr seclabel ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACSetSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACClearSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
virSecurityDriver virSecurityDriverDAC = {
sizeof(virSecurityDACData),
"virDAC",
virSecurityDACProbe,
virSecurityDACOpen,
virSecurityDACClose,
virSecurityDACGetModel,
virSecurityDACGetDOI,
virSecurityDACVerify,
virSecurityDACSetSecurityImageLabel,
virSecurityDACRestoreSecurityImageLabel,
virSecurityDACSetSocketLabel,
virSecurityDACClearSocketLabel,
virSecurityDACGenLabel,
virSecurityDACReserveLabel,
virSecurityDACReleaseLabel,
virSecurityDACGetProcessLabel,
virSecurityDACSetProcessLabel,
virSecurityDACSetSecurityAllLabel,
virSecurityDACRestoreSecurityAllLabel,
virSecurityDACSetSecurityHostdevLabel,
virSecurityDACRestoreSecurityHostdevLabel,
virSecurityDACSetSavedStateLabel,
virSecurityDACRestoreSavedStateLabel,
};

36
src/security/security_dac.h Normal file
View File

@ -0,0 +1,36 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
* POSIX DAC security driver
*/
#include "security_driver.h"
#ifndef __VIR_SECURITY_DAC
# define __VIR_SECURITY_DAC
extern virSecurityDriver virSecurityDriverDAC;
void virSecurityDACSetUser(virSecurityManagerPtr mgr,
uid_t user);
void virSecurityDACSetGroup(virSecurityManagerPtr mgr,
gid_t group);
void virSecurityDACSetDynamicOwnership(virSecurityManagerPtr mgr,
bool dynamic);
#endif /* __VIR_SECURITY_DAC */

104
src/security/security_driver.c
View File

@ -14,6 +14,7 @@
#include <string.h>
#include "virterror_internal.h"
#include "logging.h"
#include "security_driver.h"
#ifdef WITH_SECDRIVER_SELINUX
@ -24,116 +25,53 @@
# include "security_apparmor.h"
#endif
#include "security_nop.h"
static virSecurityDriverPtr security_drivers[] = {
#ifdef WITH_SECDRIVER_SELINUX
&virSELinuxSecurityDriver,
&virSecurityDriverSELinux,
#endif
#ifdef WITH_SECDRIVER_APPARMOR
&virAppArmorSecurityDriver,
#endif
NULL
&virSecurityDriverNop, /* Must always be last, since it will always probe */
};
int
virSecurityDriverVerify(virDomainDefPtr def)
virSecurityDriverPtr virSecurityDriverLookup(const char *name)
{
unsigned int i;
const virSecurityLabelDefPtr secdef = &def->seclabel;
virSecurityDriverPtr drv = NULL;
int i;
if (!secdef->model ||
STREQ(secdef->model, "none"))
return 0;
VIR_DEBUG("name=%s", NULLSTR(name));
for (i = 0; security_drivers[i] != NULL ; i++) {
if (STREQ(security_drivers[i]->name, secdef->model)) {
return security_drivers[i]->domainSecurityVerify(def);
}
}
virSecurityReportError(VIR_ERR_XML_ERROR,
_("invalid security model '%s'"), secdef->model);
return -1;
}
int
virSecurityDriverStartup(virSecurityDriverPtr *drv,
const char *name,
bool allowDiskFormatProbing)
{
unsigned int i;
if (name && STREQ(name, "none"))
return -2;
for (i = 0; security_drivers[i] != NULL ; i++) {
for (i = 0; i < ARRAY_CARDINALITY(security_drivers) && !drv ; i++) {
virSecurityDriverPtr tmp = security_drivers[i];
if (name && STRNEQ(tmp->name, name))
if (name &&
STRNEQ(tmp->name, name))
continue;
switch (tmp->probe()) {
case SECURITY_DRIVER_ENABLE:
virSecurityDriverInit(tmp);
if (tmp->open(tmp, allowDiskFormatProbing) == -1) {
return -1;
} else {
*drv = tmp;
return 0;
}
VIR_DEBUG("Probed name=%s", tmp->name);
drv = tmp;
break;
case SECURITY_DRIVER_DISABLE:
VIR_DEBUG("Not enabled name=%s", tmp->name);
break;
default:
return -1;
return NULL;
}
}
return -2;
}
/*
* Helpers
*/
void
virSecurityDriverInit(virSecurityDriverPtr drv)
{
memset(&drv->_private, 0, sizeof drv->_private);
}
int
virSecurityDriverSetDOI(virSecurityDriverPtr drv,
const char *doi)
{
if (strlen(doi) >= VIR_SECURITY_DOI_BUFLEN) {
if (!drv) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("%s: DOI \'%s\' is "
"longer than the maximum allowed length of %d"),
__func__, doi, VIR_SECURITY_DOI_BUFLEN - 1);
return -1;
_("Security driver %s not found"),
NULLSTR(name));
return NULL;
}
strcpy(drv->_private.doi, doi);
return 0;
}
const char *
virSecurityDriverGetDOI(virSecurityDriverPtr drv)
{
return drv->_private.doi;
}
const char *
virSecurityDriverGetModel(virSecurityDriverPtr drv)
{
return drv->name;
}
void virSecurityDriverSetAllowDiskFormatProbing(virSecurityDriverPtr drv,
bool allowDiskFormatProbing)
{
drv->_private.allowDiskFormatProbing = allowDiskFormatProbing;
}
bool virSecurityDriverGetAllowDiskFormatProbing(virSecurityDriverPtr drv)
{
return drv->_private.allowDiskFormatProbing;
return drv;
}

95
src/security/security_driver.h
View File

@ -16,6 +16,8 @@
# include "internal.h"
# include "domain_conf.h"
# include "security_manager.h"
/*
* Return values for security driver probing: the driver will determine
* whether it should be enabled or disabled.
@ -29,104 +31,91 @@ typedef enum {
typedef struct _virSecurityDriver virSecurityDriver;
typedef virSecurityDriver *virSecurityDriverPtr;
typedef struct _virSecurityDriverState virSecurityDriverState;
typedef virSecurityDriverState *virSecurityDriverStatePtr;
typedef virSecurityDriverStatus (*virSecurityDriverProbe) (void);
typedef int (*virSecurityDriverOpen) (virSecurityDriverPtr drv,
bool allowDiskFormatProbing);
typedef int (*virSecurityDomainRestoreImageLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDriverOpen) (virSecurityManagerPtr mgr);
typedef int (*virSecurityDriverClose) (virSecurityManagerPtr mgr);
typedef const char *(*virSecurityDriverGetModel) (virSecurityManagerPtr mgr);
typedef const char *(*virSecurityDriverGetDOI) (virSecurityManagerPtr mgr);
typedef int (*virSecurityDomainRestoreImageLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk);
typedef int (*virSecurityDomainSetSocketLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetSocketLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainClearSocketLabel)(virSecurityDriverPtr drv,
typedef int (*virSecurityDomainClearSocketLabel)(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainSetImageLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetImageLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk);
typedef int (*virSecurityDomainRestoreHostdevLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainRestoreHostdevLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev);
typedef int (*virSecurityDomainSetHostdevLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetHostdevLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev);
typedef int (*virSecurityDomainSetSavedStateLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetSavedStateLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile);
typedef int (*virSecurityDomainRestoreSavedStateLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainRestoreSavedStateLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile);
typedef int (*virSecurityDomainGenLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainGenLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr sec);
typedef int (*virSecurityDomainReserveLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainReserveLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr sec);
typedef int (*virSecurityDomainReleaseLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainReleaseLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr sec);
typedef int (*virSecurityDomainSetAllLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetAllLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr sec,
const char *stdin_path);
typedef int (*virSecurityDomainRestoreAllLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainRestoreAllLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
int migrated);
typedef int (*virSecurityDomainGetProcessLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainGetProcessLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virSecurityLabelPtr sec);
typedef int (*virSecurityDomainSetProcessLabel) (virSecurityDriverPtr drv,
typedef int (*virSecurityDomainSetProcessLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainSecurityVerify) (virDomainDefPtr def);
typedef int (*virSecurityDomainSecurityVerify) (virSecurityManagerPtr mgr,
virDomainDefPtr def);
struct _virSecurityDriver {
size_t privateDataLen;
const char *name;
virSecurityDriverProbe probe;
virSecurityDriverOpen open;
virSecurityDriverClose close;
virSecurityDriverGetModel getModel;
virSecurityDriverGetDOI getDOI;
virSecurityDomainSecurityVerify domainSecurityVerify;
virSecurityDomainSetImageLabel domainSetSecurityImageLabel;
virSecurityDomainRestoreImageLabel domainRestoreSecurityImageLabel;
virSecurityDomainSetSocketLabel domainSetSecuritySocketLabel;
virSecurityDomainClearSocketLabel domainClearSecuritySocketLabel;
virSecurityDomainSetImageLabel domainSetSecurityImageLabel;
virSecurityDomainGenLabel domainGenSecurityLabel;
virSecurityDomainReserveLabel domainReserveSecurityLabel;
virSecurityDomainReleaseLabel domainReleaseSecurityLabel;
virSecurityDomainGetProcessLabel domainGetSecurityProcessLabel;
virSecurityDomainSetProcessLabel domainSetSecurityProcessLabel;
virSecurityDomainSetAllLabel domainSetSecurityAllLabel;
virSecurityDomainRestoreAllLabel domainRestoreSecurityAllLabel;
virSecurityDomainRestoreHostdevLabel domainRestoreSecurityHostdevLabel;
virSecurityDomainSetHostdevLabel domainSetSecurityHostdevLabel;
virSecurityDomainRestoreHostdevLabel domainRestoreSecurityHostdevLabel;
virSecurityDomainSetSavedStateLabel domainSetSavedStateLabel;
virSecurityDomainRestoreSavedStateLabel domainRestoreSavedStateLabel;
/*
* This is internally managed driver state and should only be accessed
* via helpers below.
*/
struct {
char doi[VIR_SECURITY_DOI_BUFLEN];
bool allowDiskFormatProbing;
} _private;
};
/* Global methods */
int virSecurityDriverStartup(virSecurityDriverPtr *drv,
const char *name,
bool allowDiskFormatProbing);
int
virSecurityDriverVerify(virDomainDefPtr def);
# define virSecurityReportError(code, ...) \
virReportErrorHelper(NULL, VIR_FROM_SECURITY, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
/* Helpers */
void virSecurityDriverInit(virSecurityDriverPtr drv);
int virSecurityDriverSetDOI(virSecurityDriverPtr drv,
const char *doi);
void virSecurityDriverSetAllowDiskFormatProbing(virSecurityDriverPtr drv,
bool allowDiskFormatProbing);
const char *virSecurityDriverGetDOI(virSecurityDriverPtr drv);
const char *virSecurityDriverGetModel(virSecurityDriverPtr drv);
bool virSecurityDriverGetAllowDiskFormatProbing(virSecurityDriverPtr drv);
virSecurityDriverPtr virSecurityDriverLookup(const char *name);
#endif /* __VIR_SECURITY_H__ */

317
src/security/security_manager.c Normal file
View File

@ -0,0 +1,317 @@
/*
* security_manager.c: Internal security manager API
*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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 <berrange@redhat.com>
*/
#include <config.h>
#include "security_driver.h"
#include "security_stack.h"
#include "security_dac.h"
#include "virterror_internal.h"
#include "memory.h"
#include "logging.h"
#define VIR_FROM_THIS VIR_FROM_SECURITY
struct _virSecurityManager {
virSecurityDriverPtr drv;
bool allowDiskFormatProbing;
};
static virSecurityManagerPtr virSecurityManagerNewDriver(virSecurityDriverPtr drv,
bool allowDiskFormatProbing)
{
virSecurityManagerPtr mgr;
if (VIR_ALLOC_VAR(mgr, char, drv->privateDataLen) < 0) {
virReportOOMError();
return NULL;
}
mgr->drv = drv;
mgr->allowDiskFormatProbing = allowDiskFormatProbing;
if (drv->open(mgr) < 0) {
virSecurityManagerFree(mgr);
return NULL;
}
return mgr;
}
virSecurityManagerPtr virSecurityManagerNewStack(virSecurityManagerPtr primary,
virSecurityManagerPtr secondary)
{
virSecurityManagerPtr mgr =
virSecurityManagerNewDriver(&virSecurityDriverStack,
virSecurityManagerGetAllowDiskFormatProbing(primary));
if (!mgr)
return NULL;
virSecurityStackSetPrimary(mgr, primary);
virSecurityStackSetSecondary(mgr, secondary);
return mgr;
}
virSecurityManagerPtr virSecurityManagerNewDAC(uid_t user,
gid_t group,
bool allowDiskFormatProbing,
bool dynamicOwnership)
{
virSecurityManagerPtr mgr =
virSecurityManagerNewDriver(&virSecurityDriverDAC,
allowDiskFormatProbing);
if (!mgr)
return NULL;
virSecurityDACSetUser(mgr, user);
virSecurityDACSetGroup(mgr, group);
virSecurityDACSetDynamicOwnership(mgr, dynamicOwnership);
return mgr;
}
virSecurityManagerPtr virSecurityManagerNew(const char *name,
bool allowDiskFormatProbing)
{
virSecurityDriverPtr drv = virSecurityDriverLookup(name);
if (!drv)
return NULL;
return virSecurityManagerNewDriver(drv, allowDiskFormatProbing);
}
void *virSecurityManagerGetPrivateData(virSecurityManagerPtr mgr)
{
return ((char*)mgr) + sizeof(mgr);
}
void virSecurityManagerFree(virSecurityManagerPtr mgr)
{
if (!mgr)
return;
if (mgr->drv->close)
mgr->drv->close(mgr);
VIR_FREE(mgr);
}
const char *
virSecurityManagerGetDOI(virSecurityManagerPtr mgr)
{
if (mgr->drv->getDOI)
return mgr->drv->getDOI(mgr);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return NULL;
}
const char *
virSecurityManagerGetModel(virSecurityManagerPtr mgr)
{
if (mgr->drv->getModel)
return mgr->drv->getModel(mgr);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return NULL;
}
bool virSecurityManagerGetAllowDiskFormatProbing(virSecurityManagerPtr mgr)
{
return mgr->allowDiskFormatProbing;
}
int virSecurityManagerRestoreImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
if (mgr->drv->domainRestoreSecurityImageLabel)
return mgr->drv->domainRestoreSecurityImageLabel(mgr, vm, disk);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainSetSecuritySocketLabel)
return mgr->drv->domainSetSecuritySocketLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainClearSecuritySocketLabel)
return mgr->drv->domainClearSecuritySocketLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
if (mgr->drv->domainSetSecurityImageLabel)
return mgr->drv->domainSetSecurityImageLabel(mgr, vm, disk);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerRestoreHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
if (mgr->drv->domainRestoreSecurityHostdevLabel)
return mgr->drv->domainRestoreSecurityHostdevLabel(mgr, vm, dev);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
if (mgr->drv->domainSetSecurityHostdevLabel)
return mgr->drv->domainSetSecurityHostdevLabel(mgr, vm, dev);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile)
{
if (mgr->drv->domainSetSavedStateLabel)
return mgr->drv->domainSetSavedStateLabel(mgr, vm, savefile);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerRestoreSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile)
{
if (mgr->drv->domainRestoreSavedStateLabel)
return mgr->drv->domainRestoreSavedStateLabel(mgr, vm, savefile);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerGenLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainGenSecurityLabel)
return mgr->drv->domainGenSecurityLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerReserveLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainReserveSecurityLabel)
return mgr->drv->domainReserveSecurityLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerReleaseLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainReleaseSecurityLabel)
return mgr->drv->domainReleaseSecurityLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *stdin_path)
{
if (mgr->drv->domainSetSecurityAllLabel)
return mgr->drv->domainSetSecurityAllLabel(mgr, vm, stdin_path);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerRestoreAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
int migrated)
{
if (mgr->drv->domainRestoreSecurityAllLabel)
return mgr->drv->domainRestoreSecurityAllLabel(mgr, vm, migrated);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerGetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virSecurityLabelPtr sec)
{
if (mgr->drv->domainGetSecurityProcessLabel)
return mgr->drv->domainGetSecurityProcessLabel(mgr, vm, sec);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerSetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainSetSecurityProcessLabel)
return mgr->drv->domainSetSecurityProcessLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerVerify(virSecurityManagerPtr mgr,
virDomainDefPtr def)
{
if (mgr->drv->domainSecurityVerify)
return mgr->drv->domainSecurityVerify(mgr, def);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}

95
src/security/security_manager.h Normal file
View File

@ -0,0 +1,95 @@
/*
* security_manager.h: Internal security manager API
*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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 <berrange@redhat.com>
*/
#ifndef VIR_SECURITY_MANAGER_H__
# define VIR_SECURITY_MANAGER_H__
# define virSecurityReportError(code, ...) \
virReportErrorHelper(NULL, VIR_FROM_SECURITY, code, __FILE__, \
__FUNCTION__, __LINE__, __VA_ARGS__)
typedef struct _virSecurityManager virSecurityManager;
typedef virSecurityManager *virSecurityManagerPtr;
virSecurityManagerPtr virSecurityManagerNew(const char *name,
bool allowDiskFormatProbing);
virSecurityManagerPtr virSecurityManagerNewStack(virSecurityManagerPtr primary,
virSecurityManagerPtr secondary);
virSecurityManagerPtr virSecurityManagerNewDAC(uid_t user,
gid_t group,
bool allowDiskFormatProbing,
bool dynamicOwnership);
void *virSecurityManagerGetPrivateData(virSecurityManagerPtr mgr);
void virSecurityManagerFree(virSecurityManagerPtr mgr);
const char *virSecurityManagerGetDOI(virSecurityManagerPtr mgr);
const char *virSecurityManagerGetModel(virSecurityManagerPtr mgr);
bool virSecurityManagerGetAllowDiskFormatProbing(virSecurityManagerPtr mgr);
int virSecurityManagerRestoreImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk);
int virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerSetImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk);
int virSecurityManagerRestoreHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev);
int virSecurityManagerSetHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev);
int virSecurityManagerSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile);
int virSecurityManagerRestoreSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile);
int virSecurityManagerGenLabel(virSecurityManagerPtr mgr,
virDomainObjPtr sec);
int virSecurityManagerReserveLabel(virSecurityManagerPtr mgr,
virDomainObjPtr sec);
int virSecurityManagerReleaseLabel(virSecurityManagerPtr mgr,
virDomainObjPtr sec);
int virSecurityManagerSetAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr sec,
const char *stdin_path);
int virSecurityManagerRestoreAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
int migrated);
int virSecurityManagerGetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virSecurityLabelPtr sec);
int virSecurityManagerSetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerVerify(virSecurityManagerPtr mgr,
virDomainDefPtr def);
#endif /* VIR_SECURITY_MANAGER_H__ */

185
src/security/security_nop.c Normal file
View File

@ -0,0 +1,185 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
*/
#include <config.h>
#include "security_nop.h"
static virSecurityDriverStatus virSecurityDriverProbeNop(void)
{
return SECURITY_DRIVER_ENABLE;
}
static int virSecurityDriverOpenNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDriverCloseNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static const char * virSecurityDriverGetModelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return "none";
}
static const char * virSecurityDriverGetDOINop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return "0";
}
static int virSecurityDomainRestoreImageLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetSocketLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainClearSocketLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetImageLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainDiskDefPtr disk ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainRestoreHostdevLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr dev ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetHostdevLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virDomainHostdevDefPtr dev ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetSavedStateLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainRestoreSavedStateLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
const char *savefile ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainGenLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr sec ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainReserveLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr sec ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainReleaseLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr sec ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetAllLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr sec ATTRIBUTE_UNUSED,
const char *stdin_path ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainRestoreAllLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
int migrated ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainGetProcessLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED,
virSecurityLabelPtr sec ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainSetProcessLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainVerifyNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainDefPtr def ATTRIBUTE_UNUSED)
{
return 0;
}
virSecurityDriver virSecurityDriverNop = {
0,
"none",
virSecurityDriverProbeNop,
virSecurityDriverOpenNop,
virSecurityDriverCloseNop,
virSecurityDriverGetModelNop,
virSecurityDriverGetDOINop,
virSecurityDomainVerifyNop,
virSecurityDomainSetImageLabelNop,
virSecurityDomainRestoreImageLabelNop,
virSecurityDomainSetSocketLabelNop,
virSecurityDomainClearSocketLabelNop,
virSecurityDomainGenLabelNop,
virSecurityDomainReserveLabelNop,
virSecurityDomainReleaseLabelNop,
virSecurityDomainGetProcessLabelNop,
virSecurityDomainSetProcessLabelNop,
virSecurityDomainSetAllLabelNop,
virSecurityDomainRestoreAllLabelNop,
virSecurityDomainSetHostdevLabelNop,
virSecurityDomainRestoreHostdevLabelNop,
virSecurityDomainSetSavedStateLabelNop,
virSecurityDomainRestoreSavedStateLabelNop,
};

27
src/security/security_nop.h Normal file
View File

@ -0,0 +1,27 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
*/
#ifndef __VIR_SECURITY_NOP_H__
# define __VIR_SECURITY_NOP_H__
# include "security_driver.h"
extern virSecurityDriver virSecurityDriverNop;
#endif /* __VIR_SECURITY_NOP_H__ */

145
src/security/security_selinux.c
View File

@ -160,7 +160,7 @@ SELinuxInitialize(void)
}
static int
SELinuxGenSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxGenSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
int rc = -1;
@ -225,7 +225,7 @@ done:
}
static int
SELinuxReserveSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxReserveSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
security_context_t pctx;
@ -270,20 +270,34 @@ SELinuxSecurityDriverProbe(void)
}
static int
SELinuxSecurityDriverOpen(virSecurityDriverPtr drv,
bool allowDiskFormatProbing)
SELinuxSecurityDriverOpen(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return SELinuxInitialize();
}
static int
SELinuxSecurityDriverClose(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static const char *SELinuxSecurityGetModel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return SECURITY_SELINUX_NAME;
}
static const char *SELinuxSecurityGetDOI(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
/*
* Where will the DOI come from? SELinux configuration, or qemu
* configuration? For the moment, we'll just set it to "0".
*/
virSecurityDriverSetDOI(drv, SECURITY_SELINUX_VOID_DOI);
virSecurityDriverSetAllowDiskFormatProbing(drv, allowDiskFormatProbing);
return SELinuxInitialize();
return SECURITY_SELINUX_VOID_DOI;
}
static int
SELinuxGetSecurityProcessLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxGetSecurityProcessLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virSecurityLabelPtr sec)
{
@ -415,7 +429,7 @@ err:
}
static int
SELinuxRestoreSecurityImageLabelInt(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxRestoreSecurityImageLabelInt(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainDiskDefPtr disk,
int migrated)
@ -460,11 +474,11 @@ SELinuxRestoreSecurityImageLabelInt(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
static int
SELinuxRestoreSecurityImageLabel(virSecurityDriverPtr drv,
SELinuxRestoreSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
return SELinuxRestoreSecurityImageLabelInt(drv, vm, disk, 0);
return SELinuxRestoreSecurityImageLabelInt(mgr, vm, disk, 0);
}
@ -498,13 +512,13 @@ SELinuxSetSecurityFileLabel(virDomainDiskDefPtr disk,
}
static int
SELinuxSetSecurityImageLabel(virSecurityDriverPtr drv,
SELinuxSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
bool allowDiskFormatProbing = virSecurityDriverGetAllowDiskFormatProbing(drv);
bool allowDiskFormatProbing = virSecurityManagerGetAllowDiskFormatProbing(mgr);
if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC)
return 0;
@ -538,7 +552,7 @@ SELinuxSetSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
}
static int
SELinuxSetSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxSetSecurityHostdevLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
@ -607,7 +621,7 @@ SELinuxRestoreSecurityUSBLabel(usbDevice *dev ATTRIBUTE_UNUSED,
}
static int
SELinuxRestoreSecurityHostdevLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxRestoreSecurityHostdevLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
@ -756,7 +770,7 @@ SELinuxRestoreSecurityChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
static int
SELinuxRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxRestoreSecurityAllLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
int migrated ATTRIBUTE_UNUSED)
{
@ -770,13 +784,13 @@ SELinuxRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
return 0;
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (SELinuxRestoreSecurityHostdevLabel(drv,
if (SELinuxRestoreSecurityHostdevLabel(mgr,
vm,
vm->def->hostdevs[i]) < 0)
rc = -1;
}
for (i = 0 ; i < vm->def->ndisks ; i++) {
if (SELinuxRestoreSecurityImageLabelInt(drv,
if (SELinuxRestoreSecurityImageLabelInt(mgr,
vm,
vm->def->disks[i],
migrated) < 0)
@ -801,7 +815,7 @@ SELinuxRestoreSecurityAllLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
}
static int
SELinuxReleaseSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxReleaseSecurityLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
@ -825,7 +839,7 @@ SELinuxReleaseSecurityLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
static int
SELinuxSetSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxSetSavedStateLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char *savefile)
{
@ -839,7 +853,7 @@ SELinuxSetSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
static int
SELinuxRestoreSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
SELinuxRestoreSavedStateLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char *savefile)
{
@ -853,9 +867,19 @@ SELinuxRestoreSavedStateLabel(virSecurityDriverPtr drv ATTRIBUTE_UNUSED,
static int
SELinuxSecurityVerify(virDomainDefPtr def)
SELinuxSecurityVerify(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainDefPtr def)
{
const virSecurityLabelDefPtr secdef = &def->seclabel;
if (!STREQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"'%s' model configured for domain, but "
"hypervisor driver is '%s'."),
secdef->model, virSecurityManagerGetModel(mgr));
return -1;
}
if (secdef->type == VIR_DOMAIN_SECLABEL_STATIC) {
if (security_check_context(secdef->label) != 0) {
virSecurityReportError(VIR_ERR_XML_ERROR,
@ -867,7 +891,7 @@ SELinuxSecurityVerify(virDomainDefPtr def)
}
static int
SELinuxSetSecurityProcessLabel(virSecurityDriverPtr drv,
SELinuxSetSecurityProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
/* TODO: verify DOI */
@ -876,12 +900,12 @@ SELinuxSetSecurityProcessLabel(virSecurityDriverPtr drv,
if (vm->def->seclabel.label == NULL)
return 0;
if (!STREQ(drv->name, secdef->model)) {
if (!STREQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"'%s' model configured for domain, but "
"hypervisor driver is '%s'."),
secdef->model, drv->name);
secdef->model, virSecurityManagerGetModel(mgr));
if (security_getenforce() == 1)
return -1;
}
@ -898,7 +922,7 @@ SELinuxSetSecurityProcessLabel(virSecurityDriverPtr drv,
}
static int
SELinuxSetSecuritySocketLabel(virSecurityDriverPtr drv,
SELinuxSetSecuritySocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
/* TODO: verify DOI */
@ -911,12 +935,12 @@ SELinuxSetSecuritySocketLabel(virSecurityDriverPtr drv,
if (vm->def->seclabel.label == NULL)
return 0;
if (!STREQ(drv->name, secdef->model)) {
if (!STREQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"'%s' model configured for domain, but "
"hypervisor driver is '%s'."),
secdef->model, drv->name);
secdef->model, virSecurityManagerGetModel(mgr));
goto done;
}
@ -969,7 +993,7 @@ done:
}
static int
SELinuxClearSecuritySocketLabel(virSecurityDriverPtr drv,
SELinuxClearSecuritySocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
/* TODO: verify DOI */
@ -978,12 +1002,12 @@ SELinuxClearSecuritySocketLabel(virSecurityDriverPtr drv,
if (vm->def->seclabel.label == NULL)
return 0;
if (!STREQ(drv->name, secdef->model)) {
if (!STREQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"'%s' model configured for domain, but "
"hypervisor driver is '%s'."),
secdef->model, drv->name);
secdef->model, virSecurityManagerGetModel(mgr));
if (security_getenforce() == 1)
return -1;
}
@ -1011,7 +1035,7 @@ SELinuxSetSecurityChardevCallback(virDomainDefPtr def ATTRIBUTE_UNUSED,
static int
SELinuxSetSecurityAllLabel(virSecurityDriverPtr drv,
SELinuxSetSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *stdin_path)
{
@ -1028,12 +1052,12 @@ SELinuxSetSecurityAllLabel(virSecurityDriverPtr drv,
vm->def->disks[i]->src, vm->def->disks[i]->dst);
continue;
}
if (SELinuxSetSecurityImageLabel(drv,
if (SELinuxSetSecurityImageLabel(mgr,
vm, vm->def->disks[i]) < 0)
return -1;
}
for (i = 0 ; i < vm->def->nhostdevs ; i++) {
if (SELinuxSetSecurityHostdevLabel(drv,
if (SELinuxSetSecurityHostdevLabel(mgr,
vm,
vm->def->hostdevs[i]) < 0)
return -1;
@ -1063,24 +1087,37 @@ SELinuxSetSecurityAllLabel(virSecurityDriverPtr drv,
return 0;
}
virSecurityDriver virSELinuxSecurityDriver = {
.name = SECURITY_SELINUX_NAME,
.probe = SELinuxSecurityDriverProbe,
.open = SELinuxSecurityDriverOpen,
.domainSecurityVerify = SELinuxSecurityVerify,
.domainSetSecurityImageLabel = SELinuxSetSecurityImageLabel,
.domainSetSecuritySocketLabel = SELinuxSetSecuritySocketLabel,
.domainClearSecuritySocketLabel = SELinuxClearSecuritySocketLabel,
.domainRestoreSecurityImageLabel = SELinuxRestoreSecurityImageLabel,
.domainGenSecurityLabel = SELinuxGenSecurityLabel,
.domainReserveSecurityLabel = SELinuxReserveSecurityLabel,
.domainReleaseSecurityLabel = SELinuxReleaseSecurityLabel,
.domainGetSecurityProcessLabel = SELinuxGetSecurityProcessLabel,
.domainSetSecurityProcessLabel = SELinuxSetSecurityProcessLabel,
.domainRestoreSecurityAllLabel = SELinuxRestoreSecurityAllLabel,
.domainSetSecurityAllLabel = SELinuxSetSecurityAllLabel,
.domainSetSecurityHostdevLabel = SELinuxSetSecurityHostdevLabel,
.domainRestoreSecurityHostdevLabel = SELinuxRestoreSecurityHostdevLabel,
.domainSetSavedStateLabel = SELinuxSetSavedStateLabel,
.domainRestoreSavedStateLabel = SELinuxRestoreSavedStateLabel,
virSecurityDriver virSecurityDriverSELinux = {
0,
SECURITY_SELINUX_NAME,
SELinuxSecurityDriverProbe,
SELinuxSecurityDriverOpen,
SELinuxSecurityDriverClose,
SELinuxSecurityGetModel,
SELinuxSecurityGetDOI,
SELinuxSecurityVerify,
SELinuxSetSecurityImageLabel,
SELinuxRestoreSecurityImageLabel,
SELinuxSetSecuritySocketLabel,
SELinuxClearSecuritySocketLabel,
SELinuxGenSecurityLabel,
SELinuxReserveSecurityLabel,
SELinuxReleaseSecurityLabel,
SELinuxGetSecurityProcessLabel,
SELinuxSetSecurityProcessLabel,
SELinuxSetSecurityAllLabel,
SELinuxRestoreSecurityAllLabel,
SELinuxSetSecurityHostdevLabel,
SELinuxRestoreSecurityHostdevLabel,
SELinuxSetSavedStateLabel,
SELinuxRestoreSavedStateLabel,
};

2
src/security/security_selinux.h
View File

@ -13,6 +13,6 @@
#ifndef __VIR_SECURITY_SELINUX_H__
# define __VIR_SECURITY_SELINUX_H__
extern virSecurityDriver virSELinuxSecurityDriver;
extern virSecurityDriver virSecurityDriverSELinux;
#endif /* __VIR_SECURITY_SELINUX_H__ */

401
src/security/security_stack.c Normal file
View File

@ -0,0 +1,401 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
* Stacked security driver
*/
#include <config.h>
#include "security_stack.h"
#include "virterror_internal.h"
#define VIR_FROM_THIS VIR_FROM_SECURITY
typedef struct _virSecurityStackData virSecurityStackData;
typedef virSecurityStackData *virSecurityStackDataPtr;
struct _virSecurityStackData {
virSecurityManagerPtr primary;
virSecurityManagerPtr secondary;
};
void virSecurityStackSetPrimary(virSecurityManagerPtr mgr,
virSecurityManagerPtr primary)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
priv->primary = primary;
}
void virSecurityStackSetSecondary(virSecurityManagerPtr mgr,
virSecurityManagerPtr secondary)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
priv->secondary = secondary;
}
static virSecurityDriverStatus
virSecurityStackProbe(void)
{
return SECURITY_DRIVER_ENABLE;
}
static int
virSecurityStackOpen(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityStackClose(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED)
{
return 0;
}
static const char *
virSecurityStackGetModel(virSecurityManagerPtr mgr)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityManagerGetModel(priv->primary);
}
static const char *
virSecurityStackGetDOI(virSecurityManagerPtr mgr)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
return virSecurityManagerGetDOI(priv->primary);
}
static int
virSecurityStackVerify(virSecurityManagerPtr mgr,
virDomainDefPtr def)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerVerify(priv->primary, def) < 0)
rc = -1;
if (virSecurityManagerVerify(priv->secondary, def) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackGenLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerGenLabel(priv->primary, vm) < 0)
rc = -1;
#if 0
/* We don't allow secondary drivers to generate labels.
* This may have to change in the future, but requires
* changes elsewhere in domain_conf.c and capabilities.c
* XML formats first, to allow recording of multiple
* labels
*/
if (virSecurityManagerGenLabel(priv->secondary, vm) < 0)
rc = -1;
#endif
return rc;
}
static int
virSecurityStackReleaseLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerReleaseLabel(priv->primary, vm) < 0)
rc = -1;
#if 0
/* XXX See note in GenLabel */
if (virSecurityManagerReleaseLabel(priv->secondary, vm) < 0)
rc = -1;
#endif
return rc;
}
static int
virSecurityStackReserveLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerReserveLabel(priv->primary, vm) < 0)
rc = -1;
#if 0
/* XXX See note in GenLabel */
if (virSecurityManagerReserveLabel(priv->secondary, vm) < 0)
rc = -1;
#endif
return rc;
}
static int
virSecurityStackSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetImageLabel(priv->secondary, vm, disk) < 0)
rc = -1;
if (virSecurityManagerSetImageLabel(priv->primary, vm, disk) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackRestoreSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainDiskDefPtr disk)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerRestoreImageLabel(priv->secondary, vm, disk) < 0)
rc = -1;
if (virSecurityManagerRestoreImageLabel(priv->primary, vm, disk) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetHostdevLabel(priv->secondary, vm, dev) < 0)
rc = -1;
if (virSecurityManagerSetHostdevLabel(priv->primary, vm, dev) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackRestoreSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virDomainHostdevDefPtr dev)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerRestoreHostdevLabel(priv->secondary, vm, dev) < 0)
rc = -1;
if (virSecurityManagerRestoreHostdevLabel(priv->primary, vm, dev) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackSetSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *stdin_path)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetAllLabel(priv->secondary, vm, stdin_path) < 0)
rc = -1;
if (virSecurityManagerSetAllLabel(priv->primary, vm, stdin_path) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackRestoreSecurityAllLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
int migrated)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerRestoreAllLabel(priv->secondary, vm, migrated) < 0)
rc = -1;
if (virSecurityManagerRestoreAllLabel(priv->primary, vm, migrated) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetSavedStateLabel(priv->secondary, vm, savefile) < 0)
rc = -1;
if (virSecurityManagerSetSavedStateLabel(priv->primary, vm, savefile) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackRestoreSavedStateLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
const char *savefile)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerRestoreSavedStateLabel(priv->secondary, vm, savefile) < 0)
rc = -1;
if (virSecurityManagerRestoreSavedStateLabel(priv->primary, vm, savefile) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackSetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetProcessLabel(priv->secondary, vm) < 0)
rc = -1;
if (virSecurityManagerSetProcessLabel(priv->primary, vm) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackGetProcessLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm,
virSecurityLabelPtr seclabel)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
#if 0
if (virSecurityManagerGetProcessLabel(priv->secondary, vm, seclabel) < 0)
rc = -1;
#endif
if (virSecurityManagerGetProcessLabel(priv->primary, vm, seclabel) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetSocketLabel(priv->secondary, vm) < 0)
rc = -1;
if (virSecurityManagerSetSocketLabel(priv->primary, vm) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerClearSocketLabel(priv->secondary, vm) < 0)
rc = -1;
if (virSecurityManagerClearSocketLabel(priv->primary, vm) < 0)
rc = -1;
return rc;
}
virSecurityDriver virSecurityDriverStack = {
sizeof(virSecurityStackData),
"stack",
virSecurityStackProbe,
virSecurityStackOpen,
virSecurityStackClose,
virSecurityStackGetModel,
virSecurityStackGetDOI,
virSecurityStackVerify,
virSecurityStackSetSecurityImageLabel,
virSecurityStackRestoreSecurityImageLabel,
virSecurityStackSetSocketLabel,
virSecurityStackClearSocketLabel,
virSecurityStackGenLabel,
virSecurityStackReserveLabel,
virSecurityStackReleaseLabel,
virSecurityStackGetProcessLabel,
virSecurityStackSetProcessLabel,
virSecurityStackSetSecurityAllLabel,
virSecurityStackRestoreSecurityAllLabel,
virSecurityStackSetSecurityHostdevLabel,
virSecurityStackRestoreSecurityHostdevLabel,
virSecurityStackSetSavedStateLabel,
virSecurityStackRestoreSavedStateLabel,
};

33
src/security/security_stack.h Normal file
View File

@ -0,0 +1,33 @@
/*
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* 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
*
* Stacked security driver
*/
#include "security_driver.h"
#ifndef __VIR_SECURITY_STACK
# define __VIR_SECURITY_STACK
extern virSecurityDriver virSecurityDriverStack;
void virSecurityStackSetPrimary(virSecurityManagerPtr mgr,
virSecurityManagerPtr primary);
void virSecurityStackSetSecondary(virSecurityManagerPtr mgr,
virSecurityManagerPtr secondary);
#endif /* __VIR_SECURITY_DAC */

18
tests/seclabeltest.c
View File

@ -10,22 +10,16 @@
int
main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
{
int ret;
virSecurityManagerPtr mgr;
const char *doi, *model;
virSecurityDriverPtr security_drv;
ret = virSecurityDriverStartup (&security_drv, "selinux", false);
if (ret == -1)
{
mgr = virSecurityManagerNew(NULL, false);
if (mgr == NULL) {
fprintf (stderr, "Failed to start security driver");
exit (-1);
}
/* No security driver wanted to be enabled: just return */
if (ret == -2)
return 0;
model = virSecurityDriverGetModel (security_drv);
model = virSecurityManagerGetModel(mgr);
if (!model)
{
fprintf (stderr, "Failed to copy secModel model: %s",
@ -33,7 +27,7 @@ main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
exit (-1);
}
doi = virSecurityDriverGetDOI (security_drv);
doi = virSecurityManagerGetDOI(mgr);
if (!doi)
{
fprintf (stderr, "Failed to copy secModel DOI: %s",
@ -41,5 +35,7 @@ main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
exit (-1);
}
virSecurityManagerFree(mgr);
return 0;
}