1 files changed, 42 insertions, 0 deletions
diff --git a/lib/ext2fs/hashmap.h b/lib/ext2fs/hashmap.h
new file mode 100644
index 0000000..0c09d2b
--- /dev/null
+++ b/lib/ext2fs/hashmap.h
@@ -0,0 +1,42 @@
+#ifndef HASHMAP_H
+# define HASHMAP_H
+
+# include <stdlib.h>
+# include <stdint.h>
+
+#ifndef __GNUC_PREREQ
+#if defined(__GNUC__) && defined(__GNUC_MINOR__)
+#define __GNUC_PREREQ(maj, min) \
+	((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+#define __GNUC_PREREQ(maj, min) 0
+#endif
+#endif
+
+struct ext2fs_hashmap;
+
+struct ext2fs_hashmap_entry {
+	void *data;
+	const void *key;
+	size_t key_len;
+	struct ext2fs_hashmap_entry *next;
+	struct ext2fs_hashmap_entry *list_next;
+	struct ext2fs_hashmap_entry *list_prev;
+};
+
+struct ext2fs_hashmap *ext2fs_hashmap_create(
+				uint32_t(*hash_fct)(const void*, size_t),
+				void(*free_fct)(void*), size_t size);
+int ext2fs_hashmap_add(struct ext2fs_hashmap *h,
+		       void *data, const void *key,size_t key_len);
+void *ext2fs_hashmap_lookup(struct ext2fs_hashmap *h, const void *key,
+			    size_t key_len);
+void *ext2fs_hashmap_iter_in_order(struct ext2fs_hashmap *h,
+				   struct ext2fs_hashmap_entry **it);
+void ext2fs_hashmap_del(struct ext2fs_hashmap *h,
+			struct ext2fs_hashmap_entry *e);
+void ext2fs_hashmap_free(struct ext2fs_hashmap *h);
+
+uint32_t ext2fs_djb2_hash(const void *str, size_t size);
+
+#endif /* !HASHMAP_H */