Add flags to functions that might logically be expanded in the future

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

6 files changed, 34 insertions, 13 deletions

diff --git a/lib/common/writer.c b/lib/common/writer.c
index a446c41..9032a99 100644
--- a/lib/common/writer.c
+++ b/lib/common/writer.c
@@ -155,7 +155,7 @@ int sqfs_writer_init(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *wrcfg)
 	}
 
 	if (!wrcfg->no_xattr) {
-		sqfs->xwr = sqfs_xattr_writer_create();
+		sqfs->xwr = sqfs_xattr_writer_create(0);
 
 		if (sqfs->xwr == NULL) {
 			sqfs_perror(wrcfg->filename, "creating xattr writer",
diff --git a/lib/sqfs/data_reader.c b/lib/sqfs/data_reader.c
index cd9ad68..7148a53 100644
--- a/lib/sqfs/data_reader.c
+++ b/lib/sqfs/data_reader.c
@@ -184,10 +184,15 @@ fail_ftbl:
 
 sqfs_data_reader_t *sqfs_data_reader_create(sqfs_file_t *file,
 					    size_t block_size,
-					    sqfs_compressor_t *cmp)
+					    sqfs_compressor_t *cmp,
+					    sqfs_u32 flags)
 {
-	sqfs_data_reader_t *data = alloc_flex(sizeof(*data), 1, block_size);
+	sqfs_data_reader_t *data;
 
+	if (flags != 0)
+		return NULL;
+
+	data = alloc_flex(sizeof(*data), 1, block_size);
 	if (data == NULL)
 		return NULL;
 
diff --git a/lib/sqfs/dir_reader.c b/lib/sqfs/dir_reader.c
index 8e23ddb..49d1188 100644
--- a/lib/sqfs/dir_reader.c
+++ b/lib/sqfs/dir_reader.c
@@ -73,11 +73,16 @@ fail_mino:
 
 sqfs_dir_reader_t *sqfs_dir_reader_create(const sqfs_super_t *super,
 					  sqfs_compressor_t *cmp,
-					  sqfs_file_t *file)
+					  sqfs_file_t *file,
+					  sqfs_u32 flags)
 {
-	sqfs_dir_reader_t *rd = calloc(1, sizeof(*rd));
+	sqfs_dir_reader_t *rd;
 	sqfs_u64 start, limit;
 
+	if (flags != 0)
+		return NULL;
+
+	rd = calloc(1, sizeof(*rd));
 	if (rd == NULL)
 		return NULL;
 
@@ -115,11 +120,15 @@ sqfs_dir_reader_t *sqfs_dir_reader_create(const sqfs_super_t *super,
 }
 
 int sqfs_dir_reader_open_dir(sqfs_dir_reader_t *rd,
-			     const sqfs_inode_generic_t *inode)
+			     const sqfs_inode_generic_t *inode,
+			     sqfs_u32 flags)
 {
 	sqfs_u64 block_start;
 	size_t size, offset;
 
+	if (flags != 0)
+		return SQFS_ERROR_UNSUPPORTED;
+
 	if (inode->base.type == SQFS_INODE_DIR) {
 		size = inode->data.dir.size;
 		offset = inode->data.dir.offset;
@@ -274,7 +283,7 @@ int sqfs_dir_reader_find_by_path(sqfs_dir_reader_t *rd,
 			continue;
 		}
 
-		ret = sqfs_dir_reader_open_dir(rd, inode);
+		ret = sqfs_dir_reader_open_dir(rd, inode, 0);
 		free(inode);
 		if (ret)
 			return ret;
diff --git a/lib/sqfs/read_tree.c b/lib/sqfs/read_tree.c
index 5464595..b668ef4 100644
--- a/lib/sqfs/read_tree.c
+++ b/lib/sqfs/read_tree.c
@@ -124,7 +124,7 @@ static int fill_dir(sqfs_dir_reader_t *dr, sqfs_tree_node_t *root,
 		if (n->inode->base.type == SQFS_INODE_DIR ||
 		    n->inode->base.type == SQFS_INODE_EXT_DIR) {
 			if (!(flags & SQFS_TREE_NO_RECURSE)) {
-				err = sqfs_dir_reader_open_dir(dr, n->inode);
+				err = sqfs_dir_reader_open_dir(dr, n->inode, 0);
 				if (err)
 					return err;
 
@@ -220,7 +220,7 @@ int sqfs_dir_reader_get_full_hierarchy(sqfs_dir_reader_t *rd,
 			continue;
 		}
 
-		ret = sqfs_dir_reader_open_dir(rd, tail->inode);
+		ret = sqfs_dir_reader_open_dir(rd, tail->inode, 0);
 		if (ret)
 			goto fail;
 
@@ -280,7 +280,7 @@ int sqfs_dir_reader_get_full_hierarchy(sqfs_dir_reader_t *rd,
 
 	if (tail->inode->base.type == SQFS_INODE_DIR ||
 	    tail->inode->base.type == SQFS_INODE_EXT_DIR) {
-		ret = sqfs_dir_reader_open_dir(rd, tail->inode);
+		ret = sqfs_dir_reader_open_dir(rd, tail->inode, 0);
 		if (ret)
 			goto fail;
 
diff --git a/lib/sqfs/xattr/xattr_writer.c b/lib/sqfs/xattr/xattr_writer.c
index 9de3823..c33d366 100644
--- a/lib/sqfs/xattr/xattr_writer.c
+++ b/lib/sqfs/xattr/xattr_writer.c
@@ -81,10 +81,14 @@ static void xattr_writer_destroy(sqfs_object_t *obj)
 	free(xwr);
 }
 
-sqfs_xattr_writer_t *sqfs_xattr_writer_create(void)
+sqfs_xattr_writer_t *sqfs_xattr_writer_create(sqfs_u32 flags)
 {
-	sqfs_xattr_writer_t *xwr = calloc(1, sizeof(*xwr));
+	sqfs_xattr_writer_t *xwr;
 
+	if (flags != 0)
+		return NULL;
+
+	xwr = calloc(1, sizeof(*xwr));
 	if (str_table_init(&xwr->keys, XATTR_KEY_BUCKETS))
 		goto fail_keys;
 
diff --git a/lib/sqfs/xattr/xattr_writer_record.c b/lib/sqfs/xattr/xattr_writer_record.c
index 7cc55b6..aa87246 100644
--- a/lib/sqfs/xattr/xattr_writer_record.c
+++ b/lib/sqfs/xattr/xattr_writer_record.c
@@ -37,8 +37,11 @@ static int compare_u64(const void *a, const void *b)
 	return (lhs < rhs ? -1 : (lhs > rhs ? 1 : 0));
 }
 
-int sqfs_xattr_writer_begin(sqfs_xattr_writer_t *xwr)
+int sqfs_xattr_writer_begin(sqfs_xattr_writer_t *xwr, sqfs_u32 flags)
 {
+	if (flags != 0)
+		return SQFS_ERROR_UNSUPPORTED;
+
 	xwr->kv_start = xwr->num_pairs;
 	return 0;
 }