1 files changed, 49 insertions, 0 deletions
diff --git a/lib/fstree/gen_inode_numbers.c b/lib/fstree/gen_inode_numbers.c
new file mode 100644
index 0000000..35dbc7a
--- /dev/null
+++ b/lib/fstree/gen_inode_numbers.c
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * gen_inode_numbers.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "fstree.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+static void map_child_nodes(fstree_t *fs, tree_node_t *root, size_t *counter)
+{
+	bool has_subdirs = false;
+	tree_node_t *it;
+
+	for (it = root->data.dir.children; it != NULL; it = it->next) {
+		if (S_ISDIR(it->mode)) {
+			has_subdirs = true;
+			break;
+		}
+	}
+
+	if (has_subdirs) {
+		for (it = root->data.dir.children; it != NULL; it = it->next) {
+			if (S_ISDIR(it->mode))
+				map_child_nodes(fs, it, counter);
+		}
+	}
+
+	for (it = root->data.dir.children; it != NULL; it = it->next) {
+		fs->unique_inode_count += 1;
+
+		it->inode_num = *counter;
+		*counter += 1;
+	}
+}
+
+void fstree_gen_inode_numbers(fstree_t *fs)
+{
+	size_t inum = 1;
+
+	fs->unique_inode_count = 0;
+	map_child_nodes(fs, fs->root, &inum);
+	fs->root->inode_num = inum;
+	fs->unique_inode_count += 1;
+}