From 8162054b4409e34898a186b69ce16c40c0bf851a Mon Sep 17 00:00:00 2001
From: danielk1977 <danielk1977@noemail.net>
Date: Sat, 7 Jun 2008 05:19:37 +0000
Subject: [PATCH] Do not call xSync() from zeroJournalHdr() if the Pager.noSync
 flag is set (i.e. for temp files). (CVS 5194)

FossilOrigin-Name: 9f5cbe29226151113e4565fcf8170317afe1b8c6
---
 manifest        | 14 +++++++-------
 manifest.uuid   |  2 +-
 src/pager.c     |  9 ++++++---
 test/tester.tcl | 13 ++++++++++---
 4 files changed, 24 insertions(+), 14 deletions(-)

diff --git a/manifest b/manifest
index 03cf2c5320..558f58409a 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Avoid\sattempting\sto\sdelete\sthe\sjournal\sfile\sof\sa\stemporary\spager\swhen\sclosing\sthe\spager.\sIt\swill\sbe\sdeleted\sautomatically\sby\sthe\sOS\slayer.\s(CVS\s5193)
-D 2008-06-06T16:14:02
+C Do\snot\scall\sxSync()\sfrom\szeroJournalHdr()\sif\sthe\sPager.noSync\sflag\sis\sset\s(i.e.\sfor\stemp\sfiles).\s(CVS\s5194)
+D 2008-06-07T05:19:38
 F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
 F Makefile.in ce92ea8dc7adfb743757794f51c10d1b0d9c55e4
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -133,7 +133,7 @@ F src/os_common.h 24525d8b7bce66c374dfc1810a6c9043f3359b60
 F src/os_os2.c 1578149e21c4eac42c7f230a6f40500846f8e781
 F src/os_unix.c 47936aee8265e482faa626141d97d896aa981ef4
 F src/os_win.c 0d975b131b2b104d6d69d9f16bdf3c8cec28e81d
-F src/pager.c 1f3e20af0d027fefe6a09c4d00249abe7800d929
+F src/pager.c 7ce0a4abcc7e096adbd79277bb7c048ae24190f1
 F src/pager.h 7b1de4bf2cf2d9b7b312e6ed5bc7fcc9ba9aa2a4
 F src/parse.y 8c2c3145eebe1964eb279cb3c4e502eae28bb0fa
 F src/pragma.c 70e7c865dce85fdf9df81848af2169009a56ed08
@@ -472,7 +472,7 @@ F test/tableapi.test 791f7e3891d9b70bdb43b311694bf5e9befcbc34
 F test/tclsqlite.test 3dfb48f46de4353376fad835390b493ba066b4dc
 F test/tempdb.test b88ac8a19823cf771d742bf61eef93ef337c06b1
 F test/temptable.test 19b851b9e3e64d91e9867619b2a3f5fffee6e125
-F test/tester.tcl 2930673dd346a8ca69b577a0fc23cebbe3ddb5f4
+F test/tester.tcl afb901226b414b60ea136765d0fbf9ffcdf617a1
 F test/thread001.test 8fbd9559da0bbdc273e00318c7fd66c162020af7
 F test/thread002.test 2c4ad2c386f60f6fe268cd91c769ee35b3c1fd0b
 F test/thread1.test 776c9e459b75ba905193b351926ac4019b049f35
@@ -591,7 +591,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
 F tool/speedtest8inst1.c c65494ca99d1e09c246dfe37a7ca7a354af9990f
-P b8f1da52c303de20d40aa20a7a031728d5d69af5
-R 70316fa31416819576dd64c07a69ff7b
+P de8b87d65a85c4dabe53281092d9a23555a8e2d6
+R 4108c9364e1aef5c2e5946df2ebf6495
 U danielk1977
-Z 20131427c7a2cab6d1318e6133e00790
+Z ce75257a59bcc2211b7d68c3ccc3199f
diff --git a/manifest.uuid b/manifest.uuid
index 4e4b43d355..a668c75bb1 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-de8b87d65a85c4dabe53281092d9a23555a8e2d6
\ No newline at end of file
+9f5cbe29226151113e4565fcf8170317afe1b8c6
\ No newline at end of file
diff --git a/src/pager.c b/src/pager.c
index 9ee380a0ab..de95f5b9e9 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.454 2008/06/06 16:14:02 danielk1977 Exp $
+** @(#) $Id: pager.c,v 1.455 2008/06/07 05:19:38 danielk1977 Exp $
 */
 #ifndef SQLITE_OMIT_DISKIO
 #include "sqliteInt.h"
@@ -982,7 +982,7 @@ static int zeroJournalHdr(Pager *pPager, int doTruncate){
     }else{
       rc = sqlite3OsWrite(pPager->jfd, zeroHdr, sizeof(zeroHdr), 0);
     }
-    if( rc==SQLITE_OK ){
+    if( rc==SQLITE_OK && !pPager->noSync ){
       rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_DATAONLY|pPager->sync_flags);
     }
 
@@ -3148,9 +3148,12 @@ static int hasHotJournal(Pager *pPager){
     }
 
     if( rc==SQLITE_OK && exists && !locked ){
-      if( sqlite3PagerPagecount(pPager)==0 ){
+      int nPage = sqlite3PagerPagecount(pPager);
+      if( nPage==0 ){
         sqlite3OsDelete(pVfs, pPager->zJournal, 0);
         exists = 0;
+      }else if( nPage<0 ){
+        rc = SQLITE_IOERR;
       }
     }
 
diff --git a/test/tester.tcl b/test/tester.tcl
index 52784c9f8a..a3dd224a81 100644
--- a/test/tester.tcl
+++ b/test/tester.tcl
@@ -11,7 +11,7 @@
 # This file implements some common TCL routines used for regression
 # testing the SQLite library
 #
-# $Id: tester.tcl,v 1.125 2008/06/05 11:39:12 danielk1977 Exp $
+# $Id: tester.tcl,v 1.126 2008/06/07 05:19:38 danielk1977 Exp $
 
 #
 # What for user input before continuing.  This gives an opportunity
@@ -717,14 +717,21 @@ proc do_ioerr_test {testname args} {
     # a single reference if there is still an active transaction, 
     # or zero otherwise.
     #
+    # UPDATE: If the IO error occurs after a 'BEGIN' but before any
+    # locks are established on database files (i.e. if the error 
+    # occurs while attempting to detect a hot-journal file), then
+    # there may 0 page references and an active transaction according
+    # to [sqlite3_get_autocommit].
+    #
     if {$::go && $::sqlite_io_error_hardhit && $::ioerropts(-ckrefcount)} {
       do_test $testname.$n.4 {
         set bt [btree_from_db db]
         db_enter db
         array set stats [btree_pager_stats $bt]
         db_leave db
-        set stats(ref)
-      } [expr {[sqlite3_get_autocommit db]?0:1}]
+        set nRef $stats(ref)
+        expr {$nRef == 0 || ([sqlite3_get_autocommit db]==0 && $nRef == 1)}
+      } {1}
     }
 
     # If there is an open database handle and no open transaction,