From ea7b4dcc538689efcec5e1135b8ce0e9dc201b41 Mon Sep 17 00:00:00 2001
From: Hongze Cheng <hzcheng@taosdata.com>
Date: Wed, 9 Mar 2022 09:05:03 +0000
Subject: [PATCH] more TDB

---
 source/libs/tdb/src/db/tdbPage.c  |  2 +-
 source/libs/tdb/src/inc/tdbPage.h | 27 +++++++++++++++++----------
 2 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/source/libs/tdb/src/db/tdbPage.c b/source/libs/tdb/src/db/tdbPage.c
index 8d283e5ed2..ffa94b14a4 100644
--- a/source/libs/tdb/src/db/tdbPage.c
+++ b/source/libs/tdb/src/db/tdbPage.c
@@ -15,7 +15,7 @@
 
 #include "tdbInt.h"
 
-int tdbPageInsertCell(SPage *pPage, int idx, u8 *pCell, int szCell) {
+int tdbPageInsertCell(SPage *pPage, int idx, SCell *pCell, int szCell) {
   // TODO
   return 0;
 }
diff --git a/source/libs/tdb/src/inc/tdbPage.h b/source/libs/tdb/src/inc/tdbPage.h
index 74145ba860..2e6a80acbc 100644
--- a/source/libs/tdb/src/inc/tdbPage.h
+++ b/source/libs/tdb/src/inc/tdbPage.h
@@ -20,6 +20,12 @@
 extern "C" {
 #endif
 
+typedef u8 SCell;
+
+typedef struct __attribute__((__packed__)) {
+  u8 cksm[4];
+} SPageFooter;
+
 typedef struct __attribute__((__packed__)) {
   u16   flags;
   u16   nCells;
@@ -38,15 +44,16 @@ struct SPage {
   TDB_PCACHE_PAGE
 
   // Fields below used by pager and am
-  SPageHdr *pPageHdr;
-  u16      *aCellIdx;
-  int       kLen;
-  int       vLen;
-  int       maxLocal;
-  int       minLocal;
-  int       nOverflow;
-  void     *apOvfl[4];
-  int       aiOvfl[4];
+  SPageHdr    *pPageHdr;
+  SPageFooter *pPageFooter;
+  u16         *aCellIdx;
+  int          kLen;
+  int          vLen;
+  int          maxLocal;
+  int          minLocal;
+  int          nOverflow;
+  void        *apOvfl[4];
+  int          aiOvfl[4];
 };
 
 // Macros
@@ -88,7 +95,7 @@ struct SPage {
 #endif
 
 // APIs
-int tdbPageInsertCell(SPage *pPage, int idx, u8 *pCell, int szCell);
+int tdbPageInsertCell(SPage *pPage, int idx, SCell *pCell, int szCell);
 int tdbPageDropCell(SPage *pPage, int idx);
 
 #ifdef __cplusplus