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Diffstat (limited to 'lib/sqfshelper/write_export_table.c')
-rw-r--r--lib/sqfshelper/write_export_table.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/sqfshelper/write_export_table.c b/lib/sqfshelper/write_export_table.c
new file mode 100644
index 0000000..e42df15
--- /dev/null
+++ b/lib/sqfshelper/write_export_table.c
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * write_export_table.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "highlevel.h"
+#include "util.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int write_export_table(int outfd, fstree_t *fs, sqfs_super_t *super,
+ compressor_t *cmp)
+{
+ uint64_t *table, start;
+ size_t i, size;
+ int ret;
+
+ if (fs->inode_tbl_size < 1)
+ return 0;
+
+ table = alloc_array(sizeof(uint64_t), (fs->inode_tbl_size - 1));
+
+ if (table == NULL) {
+ perror("Allocating NFS export table");
+ return -1;
+ }
+
+ for (i = 1; i < fs->inode_tbl_size; ++i) {
+ if (fs->inode_table[i] == NULL) {
+ table[i - 1] = htole64(0xFFFFFFFFFFFFFFFF);
+ } else {
+ table[i - 1] = htole64(fs->inode_table[i]->inode_ref);
+ }
+ }
+
+ size = sizeof(uint64_t) * (fs->inode_tbl_size - 1);
+ ret = sqfs_write_table(outfd, super, cmp, table, size, &start);
+
+ super->export_table_start = start;
+ super->flags |= SQFS_FLAG_EXPORTABLE;
+ free(table);
+ return ret;
+}