From eb4fa52a451f9ad12a6064979f4bddfa996e1f39 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Sun, 4 Jun 2006 23:02:20 +0000
Subject: [PATCH] Changes to help SQLite cope with virus scanners and other
 programs that open journal files for reading and thus prevent SQLite from
 deleting them in order to commit a transaction. (CVS 3200)

FossilOrigin-Name: f32dbe47ffd1e7e5695f02bf4263d80bea177ffb
---
 manifest      | 12 +++++------
 manifest.uuid |  2 +-
 src/os_win.c  | 58 ++++++++++++++++++++++++++++++++-------------------
 3 files changed, 44 insertions(+), 28 deletions(-)

diff --git a/manifest b/manifest
index 17ff3540f1..1330283107 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Remove\sunused\svariables\sfrom\svdbe.c.\s(CVS\s3199)
-D 2006-06-03T18:04:17
+C Changes\sto\shelp\sSQLite\scope\swith\svirus\sscanners\sand\sother\sprograms\sthat\nopen\sjournal\sfiles\sfor\sreading\sand\sthus\sprevent\sSQLite\sfrom\sdeleting\nthem\sin\sorder\sto\scommit\sa\stransaction.\s(CVS\s3200)
+D 2006-06-04T23:02:20
 F Makefile.in 87b6d483513ab8a4e763775bc5b434d6b5c34963
 F Makefile.linux-gcc 74ba0eadf88748a9ce3fd03d2a3ede2e6715baec
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -59,7 +59,7 @@ F src/os_test.c 49833426101f99aee4bb5f6a44b7c4b2029fda1c
 F src/os_test.h 903c93554c23d88f34f667f1979e4a1cee792af3
 F src/os_unix.c 17d91581a0ab478a06cb6f257b707a4c4a93e5a7
 F src/os_unix.h 5768d56d28240d3fe4537fac08cc85e4fb52279e
-F src/os_win.c f48550e191c7e37cd8e802b6a84433e9a3b84d3a
+F src/os_win.c e64e6bdfc42d867fff05f4d7a64ea110d675bcee
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
 F src/pager.c ddd05666bb89808a516baef2c186d6a75887ae90
 F src/pager.h 43f32f3847421f7502cfbb66f4eb2302b8033818
@@ -358,7 +358,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 373246c2d1edaec1ce248ff875db48ce51d896f9
-R b48d479098e93e880ab65de32baab4b2
+P d54750aefba0accd66f928e55ae52fe074f2b8da
+R 9cbcd05930c9ecc6055d180c4440ce81
 U drh
-Z 7efde1f713a350fe61db31962972de9c
+Z 76393d3c5b3afb3e710409c428223801
diff --git a/manifest.uuid b/manifest.uuid
index f0cb34ee60..d2b43a894f 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-d54750aefba0accd66f928e55ae52fe074f2b8da
\ No newline at end of file
+f32dbe47ffd1e7e5695f02bf4263d80bea177ffb
\ No newline at end of file
diff --git a/src/os_win.c b/src/os_win.c
index b1f318fcd2..9ce80ff5cc 100644
--- a/src/os_win.c
+++ b/src/os_win.c
@@ -480,18 +480,24 @@ static BOOL winceLockFileEx(
 */
 int sqlite3WinDelete(const char *zFilename){
   WCHAR *zWide = utf8ToUnicode(zFilename);
+  int cnt = 0;
+  int rc;
   if( zWide ){
-    DeleteFileW(zWide);
+    do{
+      rc = DeleteFileW(zWide);
+    }while( rc==0 && cnt++ < 3 && (Sleep(100), 1) );
     sqliteFree(zWide);
   }else{
 #if OS_WINCE
     return SQLITE_NOMEM;
 #else
-    DeleteFileA(zFilename);
+    do{
+      rc = DeleteFileA(zFilename);
+    }while( rc==0 && cnt++ < 3 && (Sleep(100), 1) );
 #endif
   }
   TRACE2("DELETE \"%s\"\n", zFilename);
-  return SQLITE_OK;
+  return rc==0 ? SQLITE_OK : SQLITE_IOERR;
 }
 
 /*
@@ -638,27 +644,33 @@ int sqlite3WinOpenExclusive(const char *zFilename, OsFile **pId, int delFlag){
   }
 #endif
   if( zWide ){
-    h = CreateFileW(zWide,
-       GENERIC_READ | GENERIC_WRITE,
-       0,
-       NULL,
-       CREATE_ALWAYS,
-       fileflags,
-       NULL
-    );
+    int cnt = 0;
+    do{
+      h = CreateFileW(zWide,
+         GENERIC_READ | GENERIC_WRITE,
+         0,
+         NULL,
+         CREATE_ALWAYS,
+         fileflags,
+         NULL
+      );
+    }while( h==INVALID_HANDLE_VALUE && cnt++ < 2 && (Sleep(100), 1) );
     sqliteFree(zWide);
   }else{
 #if OS_WINCE
     return SQLITE_NOMEM;
 #else
-    h = CreateFileA(zFilename,
-       GENERIC_READ | GENERIC_WRITE,
-       0,
-       NULL,
-       CREATE_ALWAYS,
-       fileflags,
-       NULL
-    );
+    int cnt = 0;
+    do{
+      h = CreateFileA(zFilename,
+        GENERIC_READ | GENERIC_WRITE,
+        0,
+        NULL,
+        CREATE_ALWAYS,
+        fileflags,
+        NULL
+      );
+    }while( h==INVALID_HANDLE_VALUE && cnt++ < 2 && (Sleep(100), 1) );
 #endif /* OS_WINCE */
   }
   if( h==INVALID_HANDLE_VALUE ){
@@ -799,9 +811,13 @@ int sqlite3WinTempFileName(char *zBuf){
 */
 static int winClose(OsFile **pId){
   winFile *pFile;
+  int rc = 1;
   if( pId && (pFile = (winFile*)*pId)!=0 ){
+    int rc, cnt = 0;
     TRACE2("CLOSE %d\n", pFile->h);
-    CloseHandle(pFile->h);
+    do{
+      rc = CloseHandle(pFile->h);
+    }while( rc==0 && cnt++ < 3 && (Sleep(100), 1) );
 #if OS_WINCE
     winceDestroyLock(pFile);
     if( pFile->zDeleteOnClose ){
@@ -813,7 +829,7 @@ static int winClose(OsFile **pId){
     sqliteFree(pFile);
     *pId = 0;
   }
-  return SQLITE_OK;
+  return rc ? SQLITE_OK : SQLITE_IOERR;
 }
 
 /*