#ifdef WITH_NTFS_3G
/* The blob's data is available as the contents of an NTFS attribute
- * accessible through libntfs-3g. The attribute is identified by
- * volume, path to an inode, attribute name, and attribute type.
- * @ntfs_loc points to a structure containing this information. */
+ * accessible through libntfs-3g. @ntfs_loc points to a structure which
+ * identifies the attribute. */
BLOB_IN_NTFS_VOLUME,
#endif
/* List node for a hash bucket of the blob table */
struct hlist_node hash_list;
- /* Uncompressed size of this blob */
+ /*
+ * Uncompressed size of this blob.
+ *
+ * In most cases we are now enforcing that this is nonzero; i.e. an
+ * empty stream will have "no blob" rather than "an empty blob". The
+ * exceptions are:
+ *
+ * - blob descriptors with 'blob_location == BLOB_NONEXISTENT',
+ * e.g. placeholder entries for new metadata resources or for
+ * blobs required for pipable WIM extraction. In these cases the
+ * size is not meaningful information anyway.
+ * - blob descriptors with 'blob_location == BLOB_IN_STAGING_FILE'
+ * can vary their size over time, including to 0.
+ */
u64 size;
union {
struct {
tchar *file_on_disk;
struct wim_inode *file_inode;
+ #ifdef __WIN32__
+ u64 sort_key;
+ #endif
};
/* BLOB_IN_ATTACHED_BUFFER */