1 files changed, 43 insertions, 0 deletions
diff --git a/lib/common/write_export_table.c b/lib/common/write_export_table.c
new file mode 100644
index 0000000..c797577
--- /dev/null
+++ b/lib/common/write_export_table.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * write_export_table.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "common.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int write_export_table(const char *filename, sqfs_file_t *file,
+		       fstree_t *fs, sqfs_super_t *super,
+		       sqfs_compressor_t *cmp)
+{
+	sqfs_u64 *table, start;
+	size_t i, size;
+	int ret;
+
+	if (fs->inode_tbl_size < 1)
+		return 0;
+
+	table = alloc_array(sizeof(sqfs_u64), fs->inode_tbl_size);
+
+	if (table == NULL) {
+		perror("Allocating NFS export table");
+		return -1;
+	}
+
+	for (i = 0; i < fs->inode_tbl_size; ++i) {
+		table[i] = htole64(fs->inode_table[i]->inode_ref);
+	}
+
+	size = sizeof(sqfs_u64) * fs->inode_tbl_size;
+	ret = sqfs_write_table(file, cmp, table, size, &start);
+	if (ret)
+		sqfs_perror(filename, "writing NFS export table", ret);
+
+	super->export_table_start = start;
+	super->flags |= SQFS_FLAG_EXPORTABLE;
+	free(table);
+	return ret;
+}