Add a generic copying mechanism to sqfs_object_t

This patch adds a deep-copy callback to sqfs_object_t and removes the
copying mechanism from sqfs_compressor_t. This is also interesting for
other types.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/sqfs/comp/zstd.c b/lib/sqfs/comp/zstd.c
index e01f87d..12ddfdb 100644
--- a/lib/sqfs/comp/zstd.c
+++ b/lib/sqfs/comp/zstd.c
@@ -107,7 +107,7 @@ static void zstd_get_configuration(const sqfs_compressor_t *base,
 		cfg->flags |= SQFS_COMP_FLAG_UNCOMPRESS;
 }
 
-static sqfs_compressor_t *zstd_create_copy(sqfs_compressor_t *cmp)
+static sqfs_object_t *zstd_create_copy(const sqfs_object_t *cmp)
 {
 	zstd_compressor_t *zstd = malloc(sizeof(*zstd));
 
@@ -123,7 +123,7 @@ static sqfs_compressor_t *zstd_create_copy(sqfs_compressor_t *cmp)
 		return NULL;
 	}
 
-	return (sqfs_compressor_t *)zstd;
+	return (sqfs_object_t *)zstd;
 }
 
 static void zstd_destroy(sqfs_object_t *base)
@@ -164,7 +164,7 @@ sqfs_compressor_t *zstd_compressor_create(const sqfs_compressor_config_t *cfg)
 		zstd_uncomp_block : zstd_comp_block;
 	base->write_options = zstd_write_options;
 	base->read_options = zstd_read_options;
-	base->create_copy = zstd_create_copy;
+	((sqfs_object_t *)base)->copy = zstd_create_copy;
 	((sqfs_object_t *)base)->destroy = zstd_destroy;
 	return base;
 }