1 files changed, 36 insertions, 0 deletions
diff --git a/lib/di-set.h b/lib/di-set.h
new file mode 100644
index 0000000..b31a7f2
--- /dev/null
+++ b/lib/di-set.h
@@ -0,0 +1,36 @@
+/* Manipulate sets of device-inode pairs efficiently.
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering, 2010.  */
+
+#ifndef _GL_DI_SET_H
+# define _GL_DI_SET_H
+
+# include <sys/types.h>
+
+struct di_set;
+
+void di_set_free (struct di_set *) _GL_ATTRIBUTE_NONNULL ((1));
+
+struct di_set *di_set_alloc (void)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (di_set_free, 1);
+
+int di_set_insert (struct di_set *, dev_t, ino_t) _GL_ATTRIBUTE_NONNULL ((1));
+
+int di_set_lookup (struct di_set *dis, dev_t dev, ino_t ino)
+  _GL_ATTRIBUTE_NONNULL ((1));
+
+#endif