Better detection and reporting of errors when initializing from the

sqlite_master table. (CVS 688)

FossilOrigin-Name: c8a7b725b7cec792d2148455a4cecbce9dfebe80

manifest

@@ -1,5 +1,5 @@
-C Version\s2.6.0\sRelease\s2\s(CVS\s687)
+C Better\sdetection\sand\sreporting\sof\serrors\swhen\sinitializing\sfrom\sthe\nsqlite_master\stable.\s(CVS\s688)
-D 2002-07-18T11:10:30
+D 2002-07-19T17:46:39
 F Makefile.in 6291a33b87d2a395aafd7646ee1ed562c6f2c28c
 F Makefile.template 4e11752e0b5c7a043ca50af4296ec562857ba495
 F README a4c0ba11354ef6ba0776b400d057c59da47a4cc0
@@ -28,7 +28,7 @@ F src/func.c e45cd908b9b723d9b91473d09e12c23f786b3fc2
 F src/hash.c 6a6236b89c8c060c65dabd300a1c8ce7c10edb72
 F src/hash.h cd0433998bc1a3759d244e1637fe5a3c13b53bf8
 F src/insert.c 9bc794863ea2988a7b8667ef010b3c46b26dba38
-F src/main.c e22729b9780f2f3a2c69715f53d67666072a63d5
+F src/main.c ac96008489c086295c2e252f70e725eefd02131c
 F src/md5.c 0ae1f3e2cac92d06fc6246d1b4b8f61a2fe66d3b
 F src/os.c edb22daad525f49681f41c76683a16c1d39755c7
 F src/os.h 5b9a69875c880d1665ae040cbca1f7b9c82198ab
@@ -41,7 +41,7 @@ F src/select.c a43eabfc2e3e4d67660027f016889935f706deab
 F src/shell.c 37a8405aec5740726c4ee18826c1ff5fd2c29b96
 F src/shell.tcl 27ecbd63dd88396ad16d81ab44f73e6c0ea9d20e
 F src/sqlite.h.in 75c5bbb066d0faf34424b7d1babf8b44d5b31af2
-F src/sqliteInt.h 0d0b7b7b2b6829eb5c2f63489b11c44ba966fc75
+F src/sqliteInt.h a7a088cd9e69e9dbefe0fdfe411bb6387b50f384
 F src/table.c eed2098c9b577aa17f8abe89313a9c4413f57d63
 F src/tclsqlite.c c502819c209011659e1bbb428cbac5670cce7f79
 F src/test1.c 456cb080db85056be723e770435d9509afc3a83a
@@ -107,7 +107,7 @@ F test/trigger3.test 7dfe798d7e72c13720394685fe353112e3f31adf
 F test/unique.test 572aa791327c1e8d797932263e9d67f176cfdb44
 F test/update.test 7ffb062d580a972e7870d0f51d5af3ab9bfeae08
 F test/vacuum.test 059871b312eb910bbe49dafde1d01490cc2c6bbe
-F test/version.test 7b3084bb0b225304d4f5eb8215973e6daf439bcb
+F test/version.test 3a4d507ad9a7d4f7e2ce829b7896e399c8372ef1
 F test/view.test 3afca084dab44c7a5772d3c6a326adf93ad52050
 F test/where.test 1f87bec674bf85d74ac1cc5b2cd3d89be1e87b1d
 F tool/diffdb.c 7524b1b5df217c20cd0431f6789851a4e0cb191b
@@ -142,7 +142,7 @@ F www/speed.tcl da8afcc1d3ccc5696cfb388a68982bc3d9f7f00f
 F www/sqlite.tcl ae3dcfb077e53833b59d4fcc94d8a12c50a44098
 F www/tclsqlite.tcl 1db15abeb446aad0caf0b95b8b9579720e4ea331
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P ee8c2758a222251fed0197d2a364346d05728240
+P cc4f824b155138326f1a62066a99c65d0f32fb8b
-R 76ddeede69cbf2bb4e711ae5b4e30b2a
+R c16b27894d2d4cede767f11c98c478c7
 U drh
-Z 599b54bc5f40ea342f28053ffae009fb
+Z c2aea7accc0c02c595db5c858e306720

manifest.uuid

@@ -1 +1 @@
-cc4f824b155138326f1a62066a99c65d0f32fb8b
+c8a7b725b7cec792d2148455a4cecbce9dfebe80

src/main.c

@@ -14,12 +14,22 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.88 2002/07/18 01:27:18 drh Exp $
+** $Id: main.c,v 1.89 2002/07/19 17:46:39 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
 #include <ctype.h>
 
+/*
+** A pointer to this structure is used to communicate information
+** from sqliteInit into the sqliteInitCallback.
+*/
+typedef struct {
+  sqlite *db;         /* The database being initialized */
+  char **pzErrMsg;    /* Error message stored here */
+} InitData;
+
+
 /*
 ** This is the callback routine for the code that initializes the
 ** database.  See sqliteInit() below for additional information.
@@ -33,8 +43,9 @@
 **     argv[4] = "1" for temporary files, "0" for main database
 **
 */
-int sqliteInitCallback(void *pDb, int argc, char **argv, char **azColName){
+static
-  sqlite *db = (sqlite*)pDb;
+int sqliteInitCallback(void *pInit, int argc, char **argv, char **azColName){
+  InitData *pData = (InitData*)pInit;
   Parse sParse;
   int nErr = 0;
 
@@ -54,11 +65,11 @@ int sqliteInitCallback(void *pDb, int argc, char **argv, char **azColName){
         ** structures that describe the table, index, or view.
         */
         memset(&sParse, 0, sizeof(sParse));
-        sParse.db = db;
+        sParse.db = pData->db;
         sParse.initFlag = 1;
         sParse.isTemp = argv[4][0] - '0';
         sParse.newTnum = atoi(argv[2]);
-        sqliteRunParser(&sParse, argv[3], 0);
+        sqliteRunParser(&sParse, argv[3], pData->pzErrMsg);
       }else{
         /* If the SQL column is blank it means this is an index that
         ** was created to be the PRIMARY KEY or to fulfill a UNIQUE
@@ -66,7 +77,7 @@ int sqliteInitCallback(void *pDb, int argc, char **argv, char **azColName){
         ** been created when we processed the CREATE TABLE.  All we have
         ** to do here is record the root page number for that index.
         */
-        Index *pIndex = sqliteFindIndex(db, argv[1]);
+        Index *pIndex = sqliteFindIndex(pData->db, argv[1]);
         if( pIndex==0 || pIndex->tnum!=0 ){
           /* This can occur if there exists an index on a TEMP table which
           ** has the same name as another index on a permanent index.  Since
@@ -98,24 +109,29 @@ int sqliteInitCallback(void *pDb, int argc, char **argv, char **azColName){
 ** this routine relys on the fact that no indices are used when
 ** copying a table out to a temporary file.
 */
-static int 
+static
-upgrade_3_callback(void *pDb, int argc, char **argv, char **NotUsed){
+int upgrade_3_callback(void *pInit, int argc, char **argv, char **NotUsed){
-  sqlite *db = (sqlite*)pDb;
+  InitData *pData = (InitData*)pInit;
   int rc;
   Table *pTab;
   Trigger *pTrig;
+  char *zErr;
 
-  pTab = sqliteFindTable(db, argv[0]);
+  pTab = sqliteFindTable(pData->db, argv[0]);
   if( pTab ){
     pTrig = pTab->pTrigger;
     pTab->pTrigger = 0;  /* Disable all triggers before rebuilding the table */
   }
-  rc = sqlite_exec_printf(db,
+  rc = sqlite_exec_printf(pData->db,
     "CREATE TEMP TABLE sqlite_x AS SELECT * FROM '%q'; "
     "DELETE FROM '%q'; "
     "INSERT INTO '%q' SELECT * FROM sqlite_x; "
     "DROP TABLE sqlite_x;",
-    0, 0, 0, argv[0], argv[0], argv[0]);
+    0, 0, &zErr, argv[0], argv[0], argv[0]);
+  if( zErr ){
+    sqliteSetString(pData->pzErrMsg, zErr, 0);
+    sqlite_freemem(zErr);
+  }
   if( pTab ) pTab->pTrigger = pTrig;  /* Re-enable triggers */
   return rc!=SQLITE_OK;
 }
@@ -142,6 +158,7 @@ int sqliteInit(sqlite *db, char **pzErrMsg){
   char *azArg[6];
   int meta[SQLITE_N_BTREE_META];
   Parse sParse;
+  InitData initData;
 
   /*
   ** The master database table has a structure like this
@@ -201,7 +218,9 @@ int sqliteInit(sqlite *db, char **pzErrMsg){
   azArg[3] = master_schema;
   azArg[4] = "0";
   azArg[5] = 0;
-  sqliteInitCallback(db, 5, azArg, 0);
+  initData.db = db;
+  initData.pzErrMsg = pzErrMsg;
+  sqliteInitCallback(&initData, 5, azArg, 0);
   pTab = sqliteFindTable(db, MASTER_NAME);
   if( pTab ){
     pTab->readOnly = 1;
@@ -209,7 +228,7 @@ int sqliteInit(sqlite *db, char **pzErrMsg){
   azArg[1] = TEMP_MASTER_NAME;
   azArg[3] = temp_master_schema;
   azArg[4] = "1";
-  sqliteInitCallback(db, 5, azArg, 0);
+  sqliteInitCallback(&initData, 5, azArg, 0);
   pTab = sqliteFindTable(db, TEMP_MASTER_NAME);
   if( pTab ){
     pTab->readOnly = 1;
@@ -258,7 +277,7 @@ int sqliteInit(sqlite *db, char **pzErrMsg){
   sParse.db = db;
   sParse.pBe = db->pBe;
   sParse.xCallback = sqliteInitCallback;
-  sParse.pArg = (void*)db;
+  sParse.pArg = (void*)&initData;
   sParse.initFlag = 1;
   sqliteRunParser(&sParse,
       db->file_format>=2 ? init_script : older_init_script,
@@ -355,14 +374,17 @@ sqlite *sqlite_open(const char *zFilename, int mode, char **pzErrMsg){
   ** is read only, interrupt receive, etc.) then refuse to open.
   */
   if( db->file_format<3 ){
-    char *zErr;
+    char *zErr = 0;
+    InitData initData;
     int meta[SQLITE_N_BTREE_META];
 
+    initData.db = db;
+    initData.pzErrMsg = &zErr;
     db->file_format = 3;
     rc = sqlite_exec(db,
       "BEGIN; SELECT name FROM sqlite_master WHERE type='table';",
       upgrade_3_callback,
-      db,
+      &initData,
       &zErr);
     if( rc==SQLITE_OK ){
       sqliteBtreeGetMeta(db->pBe, meta);
@@ -374,11 +396,12 @@ sqlite *sqlite_open(const char *zFilename, int mode, char **pzErrMsg){
       sqliteSetString(pzErrMsg, 
         "unable to upgrade database to the version 2.6 format",
         zErr ? ": " : 0, zErr, 0);
-      sqliteFree(zErr);
+      sqlite_freemem(zErr);
       sqliteStrRealloc(pzErrMsg);
       sqlite_close(db);
       return 0;
     }
+    sqlite_freemem(zErr);
   }
 
   /* Return a pointer to the newly opened database structure */

src/sqliteInt.h

@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.139 2002/07/18 00:34:12 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.140 2002/07/19 17:46:39 drh Exp $
 */
 #include "sqlite.h"
 #include "hash.h"
@@ -949,4 +949,3 @@ TriggerStep *sqliteTriggerUpdateStep(Token*, ExprList*, Expr*, int);
 TriggerStep *sqliteTriggerDeleteStep(Token*, Expr*);
 void sqliteDeleteTrigger(Trigger*);
 int sqliteJoinType(Parse*, Token*, Token*, Token*);
-int sqliteInitCallback(void*,int,char**,char**);

test/version.test

@@ -12,7 +12,7 @@
 # focus of this file is testing the ability of the library to detect
 # past or future file format version numbers and respond appropriately.
 #
-# $Id: version.test,v 1.2 2002/07/18 02:07:08 drh Exp $
+# $Id: version.test,v 1.3 2002/07/19 17:46:41 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -177,6 +177,6 @@ do_test version-2.1 {
   catch {file attributes test.db -readonly 1}
   set rc [catch {sqlite db test.db} msg]
   lappend rc $msg
-} {1 {unable to upgrade database to the version 2.6 format}}
+} {1 {unable to upgrade database to the version 2.6 format: attempt to write a readonly database}}
 
 finish_test