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-rw-r--r--include/id_table.h20
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diff --git a/include/id_table.h b/include/id_table.h
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+++ b/include/id_table.h
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+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#ifndef ID_TABLE_H
+#define ID_TABLE_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+typedef struct {
+ uint32_t *ids;
+ size_t num_ids;
+ size_t max_ids;
+} id_table_t;
+
+int id_table_init(id_table_t *tbl);
+
+void id_table_cleanup(id_table_t *tbl);
+
+int id_table_id_to_index(id_table_t *tbl, uint32_t id, uint16_t *out);
+
+#endif /* ID_TABLE_H */