Re: [libvirt] [PATCH 7/7] Re-label image file backing stores

Use virStorageFileProbeHeader() to find any backing stores for images and re-label them Without this, qemu cannot access qcow2 backing files, see: https://bugzilla.redhat.com/497131 * src/security/security_selinux.c: re-label backing store files in SELinuxSetSecurityImageLabel() --- src/security/security_selinux.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/src/security/security_selinux.c b/src/security/security_selinux.c index b84de8f..f415118 100644 --- a/src/security/security_selinux.c +++ b/src/security/security_selinux.c @@ -27,6 +27,7 @@ #include "logging.h" #include "pci.h" #include "hostusb.h" +#include "storage_file.h" #define VIR_FROM_THIS VIR_FROM_SECURITY @@ -403,10 +404,35 @@ SELinuxSetSecurityImageLabel(virConnectPtr conn, { const virSecurityLabelDefPtr secdef = &vm->def->seclabel; + const char *path; + char *backingStore = NULL; if (!disk->src) return 0; + path = disk->src; + do { + int ret; + + ret = virStorageFileProbeHeader(conn, path, NULL, &backingStore, + NULL, NULL, NULL, NULL); + + if (path != disk->src) + VIR_FREE(path); + path = NULL; + + if (ret < 0) + return -1; + + if (backingStore != NULL && + SELinuxSetFilecon(conn, backingStore, default_content_context) < 0) { + VIR_FREE(backingStore); + return -1; + } + + path = backingStore; + } while (path != NULL); + if (disk->shared) { return SELinuxSetFilecon(conn, disk->src, default_image_context); } else if (disk->readonly) {