[libvirt] [PATCH] qemu_security: Introduce ImageLabel APIs

Just like we need wrappers over other virSecurityManager APIs, we need one for virSecurityManagerSetImageLabel and virSecurityManagerRestoreImageLabel. Otherwise we might end up relabelling device in wrong namespace. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_domain.c | 7 +++--- src/qemu/qemu_security.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_security.h | 8 +++++++ 3 files changed, 67 insertions(+), 4 deletions(-) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index d3f765605..7c696963e 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -31,6 +31,7 @@ #include "qemu_parse_command.h" #include "qemu_capabilities.h" #include "qemu_migration.h" +#include "qemu_security.h" #include "viralloc.h" #include "virlog.h" #include "virerror.h" @@ -5094,8 +5095,7 @@ qemuDomainDiskChainElementRevoke(virQEMUDriverPtr driver, VIR_WARN("Failed to teardown cgroup for disk path %s", NULLSTR(elem->path)); - if (virSecurityManagerRestoreImageLabel(driver->securityManager, - vm->def, elem) < 0) + if (qemuSecurityRestoreImageLabel(driver, vm, elem) < 0) VIR_WARN("Unable to restore security label on %s", NULLSTR(elem->path)); if (qemuDomainNamespaceTeardownDisk(driver, vm, elem) < 0) @@ -5135,8 +5135,7 @@ qemuDomainDiskChainElementPrepare(virQEMUDriverPtr driver, if (qemuSetupImageCgroup(vm, elem) < 0) goto cleanup; - if (virSecurityManagerSetImageLabel(driver->securityManager, vm->def, - elem) < 0) + if (qemuSecuritySetImageLabel(driver, vm, elem) < 0) goto cleanup; ret = 0; diff --git a/src/qemu/qemu_security.c b/src/qemu/qemu_security.c index ceac5bf56..f2931976b 100644 --- a/src/qemu/qemu_security.c +++ b/src/qemu/qemu_security.c @@ -133,6 +133,62 @@ qemuSecurityRestoreDiskLabel(virQEMUDriverPtr driver, } +int +qemuSecuritySetImageLabel(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virStorageSourcePtr src) +{ + int ret = -1; + + if (qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT) && + virSecurityManagerTransactionStart(driver->securityManager) < 0) + goto cleanup; + + if (virSecurityManagerSetImageLabel(driver->securityManager, + vm->def, + src) < 0) + goto cleanup; + + if (qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT) && + virSecurityManagerTransactionCommit(driver->securityManager, + vm->pid) < 0) + goto cleanup; + + ret = 0; + cleanup: + virSecurityManagerTransactionAbort(driver->securityManager); + return ret; +} + + +int +qemuSecurityRestoreImageLabel(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virStorageSourcePtr src) +{ + int ret = -1; + + if (qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT) && + virSecurityManagerTransactionStart(driver->securityManager) < 0) + goto cleanup; + + if (virSecurityManagerRestoreImageLabel(driver->securityManager, + vm->def, + src) < 0) + goto cleanup; + + if (qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT) && + virSecurityManagerTransactionCommit(driver->securityManager, + vm->pid) < 0) + goto cleanup; + + ret = 0; + cleanup: + virSecurityManagerTransactionAbort(driver->securityManager); + return ret; +} + + int qemuSecuritySetHostdevLabel(virQEMUDriverPtr driver, virDomainObjPtr vm, diff --git a/src/qemu/qemu_security.h b/src/qemu/qemu_security.h index cc373b3e1..54638908d 100644 --- a/src/qemu/qemu_security.h +++ b/src/qemu/qemu_security.h @@ -45,6 +45,14 @@ int qemuSecurityRestoreDiskLabel(virQEMUDriverPtr driver, virDomainObjPtr vm, virDomainDiskDefPtr disk); +int qemuSecuritySetImageLabel(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virStorageSourcePtr src); + +int qemuSecurityRestoreImageLabel(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virStorageSourcePtr src); + int qemuSecuritySetHostdevLabel(virQEMUDriverPtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev); -- 2.11.0