[libvirt] [PATCH 2/8] storage: Add witness for checking storage volume use in security driver
With my intended use of storage driver assist to chown files on remote
storage we will need a witness that will tell us whether the given
storage volume supports operations needed by the storage driver.
---
src/storage/storage_driver.c | 30 ++++++++++++++++++++++++++++++
src/storage/storage_driver.h | 2 ++
2 files changed, 32 insertions(+)
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 928fadf..fc05a08 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -2567,6 +2567,36 @@ virStorageFileSupportsBackingChainTraversal(virStorageSourcePtr
src)
backend->storageFileAccess;
}
+
+/**
+ * virStorageFileSupportsSecurityDriver:
+ *
+ * @src: a storage file structure
+ *
+ * Check if a storage file supports operations needed by the security
+ * driver to perform labelling */
+bool
+virStorageFileSupportsSecurityDriver(virStorageSourcePtr src)
+{
+ int actualType = virStorageSourceGetActualType(src);
+ virStorageFileBackendPtr backend;
+
+ if (!src)
+ return false;
+
+ if (src->drv) {
+ backend = src->drv->backend;
+ } else {
+ if (!(backend = virStorageFileBackendForTypeInternal(actualType,
+ src->protocol,
+ false)))
+ return false;
+ }
+
+ return !!backend->storageFileChown;
+}
+
+
void
virStorageFileDeinit(virStorageSourcePtr src)
{
diff --git a/src/storage/storage_driver.h b/src/storage/storage_driver.h
index eefd766..9592dd8 100644
--- a/src/storage/storage_driver.h
+++ b/src/storage/storage_driver.h
@@ -45,6 +45,8 @@ const char *virStorageFileGetUniqueIdentifier(virStorageSourcePtr src);
int virStorageFileAccess(virStorageSourcePtr src, int mode);
int virStorageFileChown(virStorageSourcePtr src, uid_t uid, gid_t gid);
+bool virStorageFileSupportsSecurityDriver(virStorageSourcePtr src);
+
int virStorageFileGetMetadata(virStorageSourcePtr src,
uid_t uid, gid_t gid,
bool allow_probe)
--
2.0.0