UUIDs

1 files changed, 29 insertions, 0 deletions

diff --git a/bcache.h b/bcache.h
new file mode 100644
index 0000000..448b6a5
--- /dev/null
+++ b/bcache.h
@@ -0,0 +1,29 @@
+#ifndef _BCACHE_H
+#define _BCACHE_H
+
+static const char bcache_magic[] = {
+	0xc6, 0x85, 0x73, 0xf6, 0x4e, 0x1a, 0x45, 0xca,
+	0x82, 0x65, 0xf5, 0x7f, 0x48, 0xba, 0x6d, 0x81 };
+
+struct cache_sb {
+	uint8_t		magic[16];
+#define CACHE_CLEAN	1
+#define CACHE_SYNC	2
+	uint32_t	version;
+	uint16_t	block_size;	/* sectors */
+	uint16_t	bucket_size;	/* sectors */
+	uint32_t	journal_start;	/* buckets */
+	uint32_t	first_bucket;	/* start of data */
+	uint64_t	nbuckets;	/* device size */
+	uint64_t	btree_root;
+	uint16_t	btree_level;
+	uint16_t	_pad[3];
+	uint8_t		uuid[16];
+};
+
+struct bucket_disk {
+	uint16_t	priority;
+	uint8_t		generation;
+} __attribute((packed));
+
+#endif