container_of: don't put member_ptr in container_off.

[ccan] / ccan / tdb / tdb_private.h

diff --git a/ccan/tdb/tdb_private.h b/ccan/tdb/tdb_private.h
index 228e8dcf9b09eaedf64fd166b8a683deb50070a0..4faf898986fb2cd324aeb90b4b25472a911ab8ba 100644 (file)
--- a/ccan/tdb/tdb_private.h
+++ b/ccan/tdb/tdb_private.h
@@ -33,7 +33,7 @@
 #include "system/select.h"
 #include "system/wait.h"
 #else
-#define _XOPEN_SOURCE 500
+#include "config.h"
 #define _FILE_OFFSET_BITS 64
 #include <stdint.h>
 #include <stdbool.h>
@@ -46,7 +46,6 @@
 #include <errno.h>
 #include <stdio.h>
 #include <utime.h>
-#include "config.h"
 #endif
 #include "tdb.h"
 
@@ -72,7 +71,7 @@ typedef uint32_t tdb_len_t;
 typedef uint32_t tdb_off_t;
 
 #ifndef offsetof
-#define offsetof(t,f) ((unsigned int)&((t *)0)->f)
+#define offsetof(t,f) ((size_t)&((t *)0)->f)
 #endif
 
 #define TDB_MAGIC_FOOD "TDB file\n"
@@ -82,6 +81,7 @@ typedef uint32_t tdb_off_t;
 #define TDB_DEAD_MAGIC (0xFEE1DEAD)
 #define TDB_RECOVERY_MAGIC (0xf53bc0e7U)
 #define TDB_RECOVERY_INVALID_MAGIC (0x0)
+#define TDB_HASH_RWLOCK_MAGIC (0xbad1a51U)
 #define TDB_ALIGNMENT 4
 #define DEFAULT_HASH_SIZE 131
 #define FREELIST_TOP (sizeof(struct tdb_header))
@@ -179,7 +179,9 @@ struct tdb_header {
        tdb_off_t rwlocks; /* obsolete - kept to detect old formats */
        tdb_off_t recovery_start; /* offset of transaction recovery region */
        tdb_off_t sequence_number; /* used when TDB_SEQNUM is set */
-       tdb_off_t reserved[29];
+       uint32_t magic1_hash; /* hash of TDB_MAGIC_FOOD. */
+       uint32_t magic2_hash; /* hash of TDB_MAGIC. */
+       tdb_off_t reserved[27];
 };
 
 struct tdb_lock_type {
@@ -298,6 +300,8 @@ void tdb_io_init(struct tdb_context *tdb);
 int tdb_expand(struct tdb_context *tdb, tdb_off_t size);
 int tdb_rec_free_read(struct tdb_context *tdb, tdb_off_t off,
                      struct tdb_record *rec);
-
-
+void tdb_header_hash(struct tdb_context *tdb,
+                    uint32_t *magic1_hash, uint32_t *magic2_hash);
+unsigned int tdb_old_hash(TDB_DATA *key);
+size_t tdb_dead_space(struct tdb_context *tdb, tdb_off_t off);
 #endif