Fix a bug in the legacy journal format writing logic. (CVS 862)

FossilOrigin-Name: 6c927dd36c19ebb8bb8222b4d18ed67f4fe733e8

manifest

@@ -1,5 +1,5 @@
-C Modify\sthe\sjournal\sformat\sto\sbe\smore\srobust\sagainst\sgarbage\sthat\smight\sappear\nin\sthe\sfile\safter\sa\spower\sfailure.\s\sThe\schanges\sare\smostly\sworking\sbut\smore\ntesting\sis\sstill\srequired.\s\sThis\scheck-in\sis\sto\scheckpoint\sthe\schanges\sso\sfar.\s(CVS\s861)
-D 2003-02-11T14:55:41
+C Fix\sa\sbug\sin\sthe\slegacy\sjournal\sformat\swriting\slogic.\s(CVS\s862)
+D 2003-02-12T02:10:15
 F Makefile.in 6606854b1512f185b8e8c779b8d7fc2750463d64
 F Makefile.linux-gcc b86a99c493a5bfb402d1d9178dcdc4bd4b32f906
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -33,7 +33,7 @@ F src/main.c 764a72e6a4f021ae1d3db7e82dab625075f4fedb
 F src/md5.c fe4f9c9c6f71dfc26af8da63e4d04489b1430565
 F src/os.c ed27e178e0c4b71f2807da81b8851f0fadc50778
 F src/os.h afa3e096213bad86845f8bdca81a9e917505e401
-F src/pager.c 4adf3cc6d031504e2941791f5838138d4fad2803
+F src/pager.c 1748a01ed18d7507c4c4dd54985c4aa613583a52
 F src/pager.h ce264d558c8ec289f5a9c50ca4ad499e3522a67e
 F src/parse.y cdaed5009423d851708848bd279147c268e6022e
 F src/printf.c f8fd911a8738f9b2eb07aca2870473d34707055d
@@ -155,7 +155,7 @@ F www/speed.tcl 4d463e2aea41f688ed320a937f93ff885be918c3
 F www/sqlite.tcl ae3dcfb077e53833b59d4fcc94d8a12c50a44098
 F www/tclsqlite.tcl 1db15abeb446aad0caf0b95b8b9579720e4ea331
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P e21afb82b53eade9ee267a97c58db0606f0c0a41
-R 4995a0d231005397acc1e0444b8f7298
+P 8ec5632536eea31197a3b1fd6abc57881a0cf1d7
+R b30735c88387ed3f8675a36136884368
 U drh
-Z 334d201676289fffaf14b926d96d12b8
+Z b9a60900a465cbc97d661e720b92ed2b

manifest.uuid

@@ -1 +1 @@
-8ec5632536eea31197a3b1fd6abc57881a0cf1d7
+6c927dd36c19ebb8bb8222b4d18ed67f4fe733e8

src/pager.c

@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.73 2003/02/11 14:55:41 drh Exp $
+** @(#) $Id: pager.c,v 1.74 2003/02/12 02:10:15 drh Exp $
 */
 #include "os.h"         /* Must be first to enable large file support */
 #include "sqliteInt.h"
@@ -612,12 +612,14 @@ static int pager_playback(Pager *pPager){
       nRec = (szJ - JOURNAL_HDR_SZ(3))/JOURNAL_PG_SZ(3);
     }
   }else{
-    nRec = (szJ - (sizeof(aMagic)+sizeof(Pgno))) / sizeof(PageRecord);
+    nRec = (szJ - JOURNAL_HDR_SZ(2))/JOURNAL_PG_SZ(2);
+    assert( nRec*JOURNAL_PG_SZ(2)+JOURNAL_HDR_SZ(2)==szJ );
   }
   rc = read32bits(format, &pPager->jfd, &mxPg);
   if( rc!=SQLITE_OK ){
     goto end_playback;
   }
+  assert( pPager->origDbSize==0 || pPager->origDbSize==mxPg );
   rc = sqliteOsTruncate(&pPager->fd, SQLITE_PAGE_SIZE*(off_t)mxPg);
   if( rc!=SQLITE_OK ){
     goto end_playback;
@@ -630,7 +632,6 @@ static int pager_playback(Pager *pPager){
     rc = pager_playback_one_page(pPager, &pPager->jfd, format);
     if( rc!=SQLITE_OK ){
       if( rc==SQLITE_DONE ){
-fprintf(stderr,"Playback complete after %d of %d records\n", i, nRec);
         rc = SQLITE_OK;
       }
       break;
@@ -1026,7 +1027,6 @@ static int syncAllPages(Pager *pPager){
   */
   if( pPager->needSync ){
     if( !pPager->tempFile ){
-      off_t szJ;
       assert( pPager->journalOpen );
       assert( !pPager->noSync );
 #ifndef NDEBUG
@@ -1039,6 +1039,8 @@ static int syncAllPages(Pager *pPager){
         assert( pPager->nRec*pgSz+hdrSz==pPager->syncJSize );
       }
 #endif
+      if( journal_format>=3 ){
+        off_t szJ;
         if( pPager->fullSync ){
           TRACE1("SYNC\n");
           rc = sqliteOsSync(&pPager->jfd);
@@ -1049,6 +1051,7 @@ static int syncAllPages(Pager *pPager){
         szJ = JOURNAL_HDR_SZ(journal_format) +
                  pPager->nRec*JOURNAL_PG_SZ(journal_format);
         sqliteOsSeek(&pPager->jfd, szJ);
+      }
       TRACE1("SYNC\n");
       rc = sqliteOsSync(&pPager->jfd);
       if( rc!=0 ) return rc;