Implement a more explicit object system

Make every dynamically allocated, opaque data structure inherit from
a common sqfs_object_t structure with common entry points (e.g. destroy).

This removes tons of public API functions and replaces them with a
simple sqfs_destroy instead. If semantics of the (until now implicit)
object system need to be extended, it can be much more conveniantely
done this way.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 2 insertions, 9 deletions

diff --git a/include/sqfs/xattr_reader.h b/include/sqfs/xattr_reader.h
index 6544a21..7912de4 100644
--- a/include/sqfs/xattr_reader.h
+++ b/include/sqfs/xattr_reader.h
@@ -31,6 +31,8 @@
 /**
  * @struct sqfs_xattr_reader_t
  *
+ * @implements sqfs_object_t
+ *
  * @brief Abstracts read access to extended attributes in a SquashFS filesystem
  *
  * SquashFS stores extended attributes using multiple levels of indirection.
@@ -95,15 +97,6 @@ SQFS_API sqfs_xattr_reader_t *sqfs_xattr_reader_create(sqfs_file_t *file,
 						       sqfs_compressor_t *cmp);
 
 /**
- * @brief Destroy an xattr reader and free all memory used by it
- *
- * @memberof sqfs_xattr_reader_t
- *
- * @param xr A pointer to an xattr reader instance
- */
-SQFS_API void sqfs_xattr_reader_destroy(sqfs_xattr_reader_t *xr);
-
-/**
  * @brief Load the locations of the xattr meta data blocks into memory
  *
  * @memberof sqfs_xattr_reader_t