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75056f61f1
Normally when a child process is started by libvirt, the SELinux label of that process is set to virtd_t (plus an MCS range). In at least one case (passt) we need for the SELinux label of a child process label to match the label that the binary would have transitioned to automatically if it had been run standalone (in the case of passt, that label is passt_t). This patch modifies virSecuritySELinuxSetChildProcessLabel() (and all the functions above it in the call chain) so that the toplevel function can set a new argument "useBinarySpecificLabel" to true. If it is true, then virSecuritySELinuxSetChildProcessLabel() will call the new function virSecuritySELinuxContextSetFromFile(), which uses the selinux library function security_compute_create() to determine what would be the label of the new process if it had been run standalone (rather than being run by libvirt) - the MCS range from the normally-used label is added to this newly derived label, and that is what is used for the new process rather than whatever is in the domain's security label (which will usually be virtd_t). In order to easily verify that nothing was broken by these changes to the call chain, all callers currently set useBinarySpecificPath = false, so all behavior should be completely unchanged. (The next patch will set it to true only for the case of running passt.) https://bugzilla.redhat.com/2172267 Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
243 lines
13 KiB
C
243 lines
13 KiB
C
/*
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* Copyright (C) 2008, 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 "internal.h"
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#include "domain_conf.h"
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#include "security_manager.h"
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/*
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* Return values for security driver probing: the driver will determine
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* whether it should be enabled or disabled.
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*/
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typedef enum {
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SECURITY_DRIVER_ENABLE = 0,
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SECURITY_DRIVER_ERROR = -1,
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SECURITY_DRIVER_DISABLE = -2,
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} virSecurityDriverStatus;
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typedef struct _virSecurityDriver virSecurityDriver;
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typedef virSecurityDriverStatus (*virSecurityDriverProbe) (const char *virtDriver);
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typedef int (*virSecurityDriverOpen) (virSecurityManager *mgr);
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typedef int (*virSecurityDriverClose) (virSecurityManager *mgr);
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typedef const char *(*virSecurityDriverGetModel) (virSecurityManager *mgr);
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typedef const char *(*virSecurityDriverGetDOI) (virSecurityManager *mgr);
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typedef const char *(*virSecurityDriverGetBaseLabel) (virSecurityManager *mgr,
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int virtType);
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typedef int (*virSecurityDriverPreFork) (virSecurityManager *mgr);
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typedef int (*virSecurityDriverTransactionStart) (virSecurityManager *mgr);
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typedef int (*virSecurityDriverTransactionCommit) (virSecurityManager *mgr,
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pid_t pid,
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bool lock);
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typedef void (*virSecurityDriverTransactionAbort) (virSecurityManager *mgr);
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typedef int (*virSecurityDomainSetDaemonSocketLabel)(virSecurityManager *mgr,
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virDomainDef *vm);
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typedef int (*virSecurityDomainSetSocketLabel) (virSecurityManager *mgr,
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virDomainDef *def);
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typedef int (*virSecurityDomainClearSocketLabel)(virSecurityManager *mgr,
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virDomainDef *def);
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typedef int (*virSecurityDomainRestoreHostdevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainHostdevDef *dev,
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const char *vroot);
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typedef int (*virSecurityDomainSetHostdevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainHostdevDef *dev,
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const char *vroot);
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typedef int (*virSecurityDomainSetSavedStateLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *savefile);
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typedef int (*virSecurityDomainRestoreSavedStateLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *savefile);
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typedef int (*virSecurityDomainGenLabel) (virSecurityManager *mgr,
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virDomainDef *sec);
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typedef int (*virSecurityDomainReserveLabel) (virSecurityManager *mgr,
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virDomainDef *sec,
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pid_t pid);
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typedef int (*virSecurityDomainReleaseLabel) (virSecurityManager *mgr,
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virDomainDef *sec);
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typedef int (*virSecurityDomainSetAllLabel) (virSecurityManager *mgr,
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virDomainDef *sec,
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const char *incomingPath,
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bool chardevStdioLogd,
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bool migrated);
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typedef int (*virSecurityDomainRestoreAllLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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bool migrated,
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bool chardevStdioLogd);
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typedef int (*virSecurityDomainGetProcessLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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pid_t pid,
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virSecurityLabelPtr sec);
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typedef int (*virSecurityDomainSetProcessLabel) (virSecurityManager *mgr,
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virDomainDef *def);
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typedef int (*virSecurityDomainSetChildProcessLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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bool useBinarySpecificLabel,
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virCommand *cmd);
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typedef int (*virSecurityDomainSecurityVerify) (virSecurityManager *mgr,
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virDomainDef *def);
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typedef int (*virSecurityDomainSetImageFDLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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int fd);
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typedef int (*virSecurityDomainSetTapFDLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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int fd);
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typedef char *(*virSecurityDomainGetMountOptions) (virSecurityManager *mgr,
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virDomainDef *def);
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typedef int (*virSecurityDomainSetHugepages) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *path);
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typedef int (*virSecurityDomainSetImageLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virStorageSource *src,
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virSecurityDomainImageLabelFlags flags);
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typedef int (*virSecurityDomainRestoreImageLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virStorageSource *src,
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virSecurityDomainImageLabelFlags flags);
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typedef int (*virSecurityDomainMoveImageMetadata) (virSecurityManager *mgr,
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pid_t pid,
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virStorageSource *src,
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virStorageSource *dst);
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typedef int (*virSecurityDomainSetMemoryLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainMemoryDef *mem);
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typedef int (*virSecurityDomainRestoreMemoryLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainMemoryDef *mem);
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typedef int (*virSecurityDomainSetInputLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainInputDef *input);
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typedef int (*virSecurityDomainRestoreInputLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainInputDef *input);
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typedef int (*virSecurityDomainSetPathLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *path,
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bool allowSubtree);
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typedef int (*virSecurityDomainSetPathLabelRO) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *path);
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typedef int (*virSecurityDomainRestorePathLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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const char *path);
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typedef int (*virSecurityDomainSetChardevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainChrSourceDef *dev_source,
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bool chardevStdioLogd);
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typedef int (*virSecurityDomainRestoreChardevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainChrSourceDef *dev_source,
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bool chardevStdioLogd);
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typedef int (*virSecurityDomainSetTPMLabels) (virSecurityManager *mgr,
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virDomainDef *def,
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bool setTPMStateLabel);
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typedef int (*virSecurityDomainRestoreTPMLabels) (virSecurityManager *mgr,
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virDomainDef *def,
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bool restoreTPMStateLabel);
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typedef int (*virSecurityDomainSetNetdevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainNetDef *net);
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typedef int (*virSecurityDomainRestoreNetdevLabel) (virSecurityManager *mgr,
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virDomainDef *def,
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virDomainNetDef *net);
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struct _virSecurityDriver {
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size_t privateDataLen;
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const char *name;
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virSecurityDriverProbe probe;
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virSecurityDriverOpen open;
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virSecurityDriverClose close;
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virSecurityDriverGetModel getModel;
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virSecurityDriverGetDOI getDOI;
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virSecurityDriverPreFork preFork;
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virSecurityDriverTransactionStart transactionStart;
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virSecurityDriverTransactionCommit transactionCommit;
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virSecurityDriverTransactionAbort transactionAbort;
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virSecurityDomainSecurityVerify domainSecurityVerify;
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virSecurityDomainSetImageLabel domainSetSecurityImageLabel;
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virSecurityDomainRestoreImageLabel domainRestoreSecurityImageLabel;
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virSecurityDomainMoveImageMetadata domainMoveImageMetadata;
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virSecurityDomainSetMemoryLabel domainSetSecurityMemoryLabel;
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virSecurityDomainRestoreMemoryLabel domainRestoreSecurityMemoryLabel;
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virSecurityDomainSetInputLabel domainSetSecurityInputLabel;
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virSecurityDomainRestoreInputLabel domainRestoreSecurityInputLabel;
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virSecurityDomainSetDaemonSocketLabel domainSetSecurityDaemonSocketLabel;
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virSecurityDomainSetSocketLabel domainSetSecuritySocketLabel;
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virSecurityDomainClearSocketLabel domainClearSecuritySocketLabel;
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virSecurityDomainGenLabel domainGenSecurityLabel;
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virSecurityDomainReserveLabel domainReserveSecurityLabel;
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virSecurityDomainReleaseLabel domainReleaseSecurityLabel;
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virSecurityDomainGetProcessLabel domainGetSecurityProcessLabel;
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virSecurityDomainSetProcessLabel domainSetSecurityProcessLabel;
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virSecurityDomainSetChildProcessLabel domainSetSecurityChildProcessLabel;
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virSecurityDomainSetAllLabel domainSetSecurityAllLabel;
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virSecurityDomainRestoreAllLabel domainRestoreSecurityAllLabel;
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virSecurityDomainSetHostdevLabel domainSetSecurityHostdevLabel;
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virSecurityDomainRestoreHostdevLabel domainRestoreSecurityHostdevLabel;
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virSecurityDomainSetSavedStateLabel domainSetSavedStateLabel;
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virSecurityDomainRestoreSavedStateLabel domainRestoreSavedStateLabel;
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virSecurityDomainSetImageFDLabel domainSetSecurityImageFDLabel;
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virSecurityDomainSetTapFDLabel domainSetSecurityTapFDLabel;
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virSecurityDomainGetMountOptions domainGetSecurityMountOptions;
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virSecurityDriverGetBaseLabel getBaseLabel;
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virSecurityDomainSetPathLabel domainSetPathLabel;
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virSecurityDomainSetPathLabelRO domainSetPathLabelRO;
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virSecurityDomainRestorePathLabel domainRestorePathLabel;
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virSecurityDomainSetChardevLabel domainSetSecurityChardevLabel;
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virSecurityDomainRestoreChardevLabel domainRestoreSecurityChardevLabel;
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virSecurityDomainSetTPMLabels domainSetSecurityTPMLabels;
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virSecurityDomainRestoreTPMLabels domainRestoreSecurityTPMLabels;
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virSecurityDomainSetNetdevLabel domainSetSecurityNetdevLabel;
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virSecurityDomainRestoreNetdevLabel domainRestoreSecurityNetdevLabel;
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};
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virSecurityDriver *virSecurityDriverLookup(const char *name,
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const char *virtDriver);
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