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66643931e7
/dev/userfaultfd device is preferred over userfaultfd syscall for post-copy migrations. Unless qemu driver is configured to disable mount namespace or to forbid access to /dev/userfaultfd in cgroup_device_acl, we will copy it to the limited /dev filesystem QEMU will have access to and label it appropriately. So in the default configuration post-copy migration will be allowed even without enabling vm.unprivileged_userfaultfd sysctl. Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
154 lines
6.6 KiB
C
154 lines
6.6 KiB
C
/*
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* qemu_security.h: QEMU security management
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*
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* Copyright (C) 2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "qemu_conf.h"
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int qemuSecuritySetAllLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *incomingPath,
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bool migrated);
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void qemuSecurityRestoreAllLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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bool migrated);
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int qemuSecuritySetImageLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virStorageSource *src,
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bool backingChain,
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bool chainTop);
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int qemuSecurityRestoreImageLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virStorageSource *src,
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bool backingChain);
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int qemuSecurityMoveImageMetadata(virQEMUDriver *driver,
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virDomainObj *vm,
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virStorageSource *src,
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virStorageSource *dst);
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int qemuSecuritySetHostdevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainHostdevDef *hostdev);
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int qemuSecurityRestoreHostdevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainHostdevDef *hostdev);
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int qemuSecuritySetMemoryLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainMemoryDef *mem);
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int qemuSecurityRestoreMemoryLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainMemoryDef *mem);
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int qemuSecuritySetInputLabel(virDomainObj *vm,
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virDomainInputDef *input);
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int qemuSecurityRestoreInputLabel(virDomainObj *vm,
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virDomainInputDef *input);
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int qemuSecuritySetChardevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainChrDef *chr);
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int qemuSecurityRestoreChardevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainChrDef *chr);
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int qemuSecuritySetNetdevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainNetDef *net);
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int qemuSecurityRestoreNetdevLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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virDomainNetDef *net);
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int qemuSecuritySetTPMLabels(virQEMUDriver *driver,
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virDomainObj *vm,
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bool setTPMStateLabel);
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int qemuSecurityRestoreTPMLabels(virQEMUDriver *driver,
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virDomainObj *vm,
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bool restoreTPMStateLabel);
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int qemuSecuritySetSavedStateLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *savefile);
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int qemuSecurityRestoreSavedStateLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *savefile);
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int qemuSecurityDomainSetPathLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *path,
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bool allowSubtree);
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int qemuSecurityDomainRestorePathLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *path);
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int
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qemuSecurityDomainSetMountNSPathLabel(virQEMUDriver *driver,
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virDomainObj *vm,
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const char *path);
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int qemuSecurityCommandRun(virQEMUDriver *driver,
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virDomainObj *vm,
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virCommand *cmd,
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uid_t uid,
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gid_t gid,
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bool useBinarySpecificLabel,
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int *exitstatus);
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/* Please note that for these APIs there is no wrapper yet. Do NOT blindly add
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* new APIs here. If an API can touch a file add a proper wrapper instead.
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*/
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#define qemuSecurityCheckAllLabel virSecurityManagerCheckAllLabel
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#define qemuSecurityClearSocketLabel virSecurityManagerClearSocketLabel
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#define qemuSecurityGenLabel virSecurityManagerGenLabel
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#define qemuSecurityGetBaseLabel virSecurityManagerGetBaseLabel
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#define qemuSecurityGetDOI virSecurityManagerGetDOI
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#define qemuSecurityGetModel virSecurityManagerGetModel
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#define qemuSecurityGetMountOptions virSecurityManagerGetMountOptions
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#define qemuSecurityGetNested virSecurityManagerGetNested
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#define qemuSecurityGetProcessLabel virSecurityManagerGetProcessLabel
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#define qemuSecurityNew virSecurityManagerNew
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#define qemuSecurityNewDAC virSecurityManagerNewDAC
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#define qemuSecurityNewStack virSecurityManagerNewStack
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#define qemuSecurityPostFork virSecurityManagerPostFork
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#define qemuSecurityPreFork virSecurityManagerPreFork
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#define qemuSecurityReleaseLabel virSecurityManagerReleaseLabel
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#define qemuSecurityReserveLabel virSecurityManagerReserveLabel
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#define qemuSecurityRestoreSavedStateLabel virSecurityManagerRestoreSavedStateLabel
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#define qemuSecuritySetChildProcessLabel virSecurityManagerSetChildProcessLabel
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#define qemuSecuritySetDaemonSocketLabel virSecurityManagerSetDaemonSocketLabel
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#define qemuSecuritySetImageFDLabel virSecurityManagerSetImageFDLabel
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#define qemuSecuritySetSavedStateLabel virSecurityManagerSetSavedStateLabel
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#define qemuSecuritySetSocketLabel virSecurityManagerSetSocketLabel
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#define qemuSecuritySetTapFDLabel virSecurityManagerSetTapFDLabel
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#define qemuSecurityStackAddNested virSecurityManagerStackAddNested
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#define qemuSecurityVerify virSecurityManagerVerify
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