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Diffstat (limited to 'lib/fstree/gen_inode_numbers.c')
-rw-r--r--lib/fstree/gen_inode_numbers.c49
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;
+}