X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb%2Ftdb_private.h;h=ef85385c81ae8836b1ab94b4949e7db562959be9;hp=4836472864006d3cab1f5726553399d7bf4054f3;hb=165727526f785b05f67f3d88f9518a0a840acbbf;hpb=ac0e87d7ecf790c187ce3c5d837b971fdd016b57

diff --git a/ccan/tdb/tdb_private.h b/ccan/tdb/tdb_private.h
index 48364728..ef85385c 100644
--- a/ccan/tdb/tdb_private.h
+++ b/ccan/tdb/tdb_private.h
@@ -34,6 +34,7 @@
 #include "system/wait.h"
 #else
 #define _XOPEN_SOURCE 500
+#define _FILE_OFFSET_BITS 64
 #include <stdint.h>
 #include <stdbool.h>
 #include <stdlib.h>
@@ -90,6 +91,7 @@ typedef uint32_t tdb_off_t;
 
 #ifdef TDB_TRACE
 void tdb_trace(struct tdb_context *tdb, const char *op);
+void tdb_trace_seqnum(struct tdb_context *tdb, uint32_t seqnum, const char *op);
 void tdb_trace_open(struct tdb_context *tdb, const char *op,
 		    unsigned hash_size, unsigned tdb_flags, unsigned open_flags);
 void tdb_trace_ret(struct tdb_context *tdb, const char *op, int ret);
@@ -107,6 +109,7 @@ void tdb_trace_2rec_retrec(struct tdb_context *tdb, const char *op,
 			   TDB_DATA rec1, TDB_DATA rec2, TDB_DATA ret);
 #else
 #define tdb_trace(tdb, op)
+#define tdb_trace_seqnum(tdb, seqnum, op)
 #define tdb_trace_open(tdb, op, hash_size, tdb_flags, open_flags)
 #define tdb_trace_ret(tdb, op, ret)
 #define tdb_trace_retrec(tdb, op, ret)
@@ -179,6 +182,15 @@ struct tdb_traverse_lock {
 	int lock_rw;
 };
 
+enum tdb_lock_flags {
+	/* WAIT == F_SETLKW, NOWAIT == F_SETLK */
+	TDB_LOCK_NOWAIT = 0,
+	TDB_LOCK_WAIT = 1,
+	/* If set, don't log an error on failure. */
+	TDB_LOCK_PROBE = 2,
+	/* If set, don't actually lock at all. */
+	TDB_LOCK_MARK_ONLY = 4,
+};
 
 struct tdb_methods {
 	int (*tdb_read)(struct tdb_context *, tdb_off_t , void *, tdb_len_t , int );
@@ -186,7 +198,8 @@ struct tdb_methods {
 	void (*next_hash_chain)(struct tdb_context *, uint32_t *);
 	int (*tdb_oob)(struct tdb_context *, tdb_off_t , int );
 	int (*tdb_expand_file)(struct tdb_context *, tdb_off_t , tdb_off_t );
-	int (*tdb_brlock)(struct tdb_context *, tdb_off_t , int, int, int, size_t);
+	int (*brlock)(struct tdb_context *, int, tdb_off_t, size_t, enum tdb_lock_flags);
+	int (*brunlock)(struct tdb_context *, int, tdb_off_t, size_t);
 };
 
 struct tdb_context {
@@ -215,8 +228,11 @@ struct tdb_context {
 	struct tdb_transaction *transaction;
 	int page_size;
 	int max_dead_records;
-	int have_transaction_lock;
+	int transaction_lock_count;
+#ifdef TDB_TRACE
 	int tracefd;
+	uint32_t transaction_prepare_seqnum;
+#endif
 	volatile sig_atomic_t *interrupt_sig_ptr;
 };
 
@@ -229,9 +245,13 @@ void tdb_mmap(struct tdb_context *tdb);
 int tdb_lock(struct tdb_context *tdb, int list, int ltype);
 int tdb_lock_nonblock(struct tdb_context *tdb, int list, int ltype);
 int tdb_unlock(struct tdb_context *tdb, int list, int ltype);
-int tdb_brlock(struct tdb_context *tdb, tdb_off_t offset, int rw_type, int lck_type, int probe, size_t len);
+int tdb_brlock(struct tdb_context *tdb,
+	       int rw_type, tdb_off_t offset, size_t len,
+	       enum tdb_lock_flags flags);
+int tdb_brunlock(struct tdb_context *tdb,
+		 int rw_type, tdb_off_t offset, size_t len);
 int tdb_transaction_lock(struct tdb_context *tdb, int ltype);
-int tdb_transaction_unlock(struct tdb_context *tdb);
+int tdb_transaction_unlock(struct tdb_context *tdb, int ltype);
 int tdb_brlock_upgrade(struct tdb_context *tdb, tdb_off_t offset, size_t len);
 int tdb_write_lock_record(struct tdb_context *tdb, tdb_off_t off);
 int tdb_write_unlock_record(struct tdb_context *tdb, tdb_off_t off);
@@ -244,7 +264,7 @@ int tdb_ofs_read(struct tdb_context *tdb, tdb_off_t offset, tdb_off_t *d);
 int tdb_ofs_write(struct tdb_context *tdb, tdb_off_t offset, tdb_off_t *d);
 int tdb_lock_record(struct tdb_context *tdb, tdb_off_t off);
 int tdb_unlock_record(struct tdb_context *tdb, tdb_off_t off);
-int tdb_transaction_cancel_internal(struct tdb_context *tdb);
+int _tdb_transaction_cancel(struct tdb_context *tdb, int ltype);
 int tdb_rec_read(struct tdb_context *tdb, tdb_off_t offset, struct list_struct *rec);
 int tdb_rec_write(struct tdb_context *tdb, tdb_off_t offset, struct list_struct *rec);
 int tdb_do_delete(struct tdb_context *tdb, tdb_off_t rec_ptr, struct list_struct *rec);