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62f3d8adbc
Our decision whether to remember seclabel for a disk image depends on a few factors. If the image is readonly or shared or not the chain top the remembering is suppressed for the image. However, the virSecurityManagerSetImageLabel() is too low level to determine whether passed @src is chain top or not. Even though the function has the @parent argument it does not necessarily reflect the chain top - it only points to the top level image in the chain we want to relabel and not to the topmost image of the whole chain. And this can't be derived from the passed domain definition reliably neither - in some cases (like snapshots or block copy) the @src is added to the definition only after the operation succeeded. Therefore, introduce a flag which callers can use to help us with the decision. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
225 lines
11 KiB
C
225 lines
11 KiB
C
/*
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* security_manager.h: Internal security manager API
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*
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* Copyright (C) 2010-2013 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 "domain_conf.h"
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#include "vircommand.h"
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#include "virstoragefile.h"
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typedef struct _virSecurityManager virSecurityManager;
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typedef virSecurityManager *virSecurityManagerPtr;
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typedef enum {
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VIR_SECURITY_MANAGER_DEFAULT_CONFINED = 1 << 1,
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VIR_SECURITY_MANAGER_REQUIRE_CONFINED = 1 << 2,
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VIR_SECURITY_MANAGER_PRIVILEGED = 1 << 3,
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VIR_SECURITY_MANAGER_DYNAMIC_OWNERSHIP = 1 << 4,
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VIR_SECURITY_MANAGER_MOUNT_NAMESPACE = 1 << 5,
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} virSecurityManagerNewFlags;
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#define VIR_SECURITY_MANAGER_NEW_MASK \
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(VIR_SECURITY_MANAGER_DEFAULT_CONFINED | \
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VIR_SECURITY_MANAGER_REQUIRE_CONFINED | \
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VIR_SECURITY_MANAGER_PRIVILEGED)
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virSecurityManagerPtr virSecurityManagerNew(const char *name,
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const char *virtDriver,
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unsigned int flags);
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virSecurityManagerPtr virSecurityManagerNewStack(virSecurityManagerPtr primary);
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int virSecurityManagerStackAddNested(virSecurityManagerPtr stack,
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virSecurityManagerPtr nested);
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/**
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* virSecurityManagerDACChownCallback:
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* @src: Storage file to chown
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* @uid: target uid
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* @gid: target gid
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*
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* A function callback to chown image files described by the disk source struct
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* @src. The callback shall return 0 on success, -1 on error and errno set (no
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* libvirt error reported) OR -2 and a libvirt error reported. */
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typedef int
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(*virSecurityManagerDACChownCallback)(const virStorageSource *src,
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uid_t uid,
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gid_t gid);
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virSecurityManagerPtr virSecurityManagerNewDAC(const char *virtDriver,
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uid_t user,
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gid_t group,
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unsigned int flags,
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virSecurityManagerDACChownCallback chownCallback);
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int virSecurityManagerPreFork(virSecurityManagerPtr mgr);
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void virSecurityManagerPostFork(virSecurityManagerPtr mgr);
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int virSecurityManagerTransactionStart(virSecurityManagerPtr mgr);
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int virSecurityManagerTransactionCommit(virSecurityManagerPtr mgr,
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pid_t pid,
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bool lock);
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void virSecurityManagerTransactionAbort(virSecurityManagerPtr mgr);
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void *virSecurityManagerGetPrivateData(virSecurityManagerPtr mgr);
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const char *virSecurityManagerGetDriver(virSecurityManagerPtr mgr);
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const char *virSecurityManagerGetVirtDriver(virSecurityManagerPtr mgr);
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const char *virSecurityManagerGetDOI(virSecurityManagerPtr mgr);
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const char *virSecurityManagerGetModel(virSecurityManagerPtr mgr);
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const char *virSecurityManagerGetBaseLabel(virSecurityManagerPtr mgr, int virtType);
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bool virSecurityManagerGetDefaultConfined(virSecurityManagerPtr mgr);
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bool virSecurityManagerGetRequireConfined(virSecurityManagerPtr mgr);
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bool virSecurityManagerGetPrivileged(virSecurityManagerPtr mgr);
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int virSecurityManagerSetDaemonSocketLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm);
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int virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def);
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int virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def);
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int virSecurityManagerRestoreHostdevLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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virDomainHostdevDefPtr dev,
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const char *vroot);
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int virSecurityManagerSetHostdevLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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virDomainHostdevDefPtr dev,
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const char *vroot);
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int virSecurityManagerSetSavedStateLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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const char *savefile);
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int virSecurityManagerRestoreSavedStateLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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const char *savefile);
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int virSecurityManagerGenLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr sec);
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int virSecurityManagerReserveLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr sec,
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pid_t pid);
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int virSecurityManagerReleaseLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr sec);
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int virSecurityManagerCheckAllLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr sec);
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int virSecurityManagerSetAllLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr sec,
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const char *stdin_path,
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bool chardevStdioLogd,
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bool migrated);
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int virSecurityManagerRestoreAllLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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bool migrated,
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bool chardevStdioLogd);
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int virSecurityManagerGetProcessLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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pid_t pid,
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virSecurityLabelPtr sec);
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int virSecurityManagerSetProcessLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def);
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int virSecurityManagerSetChildProcessLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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virCommandPtr cmd);
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int virSecurityManagerVerify(virSecurityManagerPtr mgr,
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virDomainDefPtr def);
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int virSecurityManagerSetImageFDLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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int fd);
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int virSecurityManagerSetTapFDLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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int fd);
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char *virSecurityManagerGetMountOptions(virSecurityManagerPtr mgr,
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virDomainDefPtr vm);
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virSecurityManagerPtr* virSecurityManagerGetNested(virSecurityManagerPtr mgr);
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typedef enum {
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VIR_SECURITY_DOMAIN_IMAGE_LABEL_BACKING_CHAIN = 1 << 0,
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/* The VIR_SECURITY_DOMAIN_IMAGE_PARENT_CHAIN_TOP should be set if the
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* image passed to virSecurityManagerSetImageLabel() is the top parent of
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* the whole backing chain. */
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VIR_SECURITY_DOMAIN_IMAGE_PARENT_CHAIN_TOP = 1 << 1,
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} virSecurityDomainImageLabelFlags;
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int virSecurityManagerSetImageLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virStorageSourcePtr src,
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virSecurityDomainImageLabelFlags flags);
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int virSecurityManagerRestoreImageLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virStorageSourcePtr src,
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virSecurityDomainImageLabelFlags flags);
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int virSecurityManagerMoveImageMetadata(virSecurityManagerPtr mgr,
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pid_t pid,
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virStorageSourcePtr src,
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virStorageSourcePtr dst);
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int virSecurityManagerSetMemoryLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virDomainMemoryDefPtr mem);
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int virSecurityManagerRestoreMemoryLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virDomainMemoryDefPtr mem);
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int virSecurityManagerSetInputLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virDomainInputDefPtr input);
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int virSecurityManagerRestoreInputLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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virDomainInputDefPtr input);
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int virSecurityManagerDomainSetPathLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr vm,
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const char *path,
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bool allowSubtree);
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int virSecurityManagerSetChardevLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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virDomainChrSourceDefPtr dev_source,
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bool chardevStdioLogd);
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int virSecurityManagerRestoreChardevLabel(virSecurityManagerPtr mgr,
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virDomainDefPtr def,
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virDomainChrSourceDefPtr dev_source,
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bool chardevStdioLogd);
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int virSecurityManagerSetTPMLabels(virSecurityManagerPtr mgr,
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virDomainDefPtr vm);
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int virSecurityManagerRestoreTPMLabels(virSecurityManagerPtr mgr,
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virDomainDefPtr vm);
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typedef struct _virSecurityManagerMetadataLockState virSecurityManagerMetadataLockState;
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typedef virSecurityManagerMetadataLockState *virSecurityManagerMetadataLockStatePtr;
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struct _virSecurityManagerMetadataLockState {
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size_t nfds; /* Captures size of both @fds and @paths */
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int *fds;
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const char **paths;
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};
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virSecurityManagerMetadataLockStatePtr
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virSecurityManagerMetadataLock(virSecurityManagerPtr mgr,
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const char **paths,
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size_t npaths);
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void
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virSecurityManagerMetadataUnlock(virSecurityManagerPtr mgr,
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virSecurityManagerMetadataLockStatePtr *state);
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