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33e619fc1c
expressions. Change Expr.zToken to Expr.u.zToken and added Expr.u.iValue. Remove an unnecessary ExprDup from CHECK constraint processing. And so forth. (CVS 6682) FossilOrigin-Name: 4ac2bdfbb4230b6ceaae87e738fa61036bbe03cb
1429 lines
50 KiB
C
1429 lines
50 KiB
C
/*
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** 2003 April 6
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** This file contains code used to implement the PRAGMA command.
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**
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** $Id: pragma.c,v 1.211 2009/05/28 01:00:55 drh Exp $
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*/
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#include "sqliteInt.h"
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/* Ignore this whole file if pragmas are disabled
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*/
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#if !defined(SQLITE_OMIT_PRAGMA) && !defined(SQLITE_OMIT_PARSER)
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/*
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** Interpret the given string as a safety level. Return 0 for OFF,
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** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or
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** unrecognized string argument.
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**
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** Note that the values returned are one less that the values that
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** should be passed into sqlite3BtreeSetSafetyLevel(). The is done
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** to support legacy SQL code. The safety level used to be boolean
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** and older scripts may have used numbers 0 for OFF and 1 for ON.
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*/
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static u8 getSafetyLevel(const char *z){
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/* 123456789 123456789 */
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static const char zText[] = "onoffalseyestruefull";
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static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 16};
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static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 4};
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static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 2};
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int i, n;
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if( sqlite3Isdigit(*z) ){
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return (u8)atoi(z);
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}
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n = sqlite3Strlen30(z);
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for(i=0; i<ArraySize(iLength); i++){
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if( iLength[i]==n && sqlite3StrNICmp(&zText[iOffset[i]],z,n)==0 ){
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return iValue[i];
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}
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}
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return 1;
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}
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/*
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** Interpret the given string as a boolean value.
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*/
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static u8 getBoolean(const char *z){
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return getSafetyLevel(z)&1;
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}
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/*
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** Interpret the given string as a locking mode value.
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*/
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static int getLockingMode(const char *z){
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if( z ){
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if( 0==sqlite3StrICmp(z, "exclusive") ) return PAGER_LOCKINGMODE_EXCLUSIVE;
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if( 0==sqlite3StrICmp(z, "normal") ) return PAGER_LOCKINGMODE_NORMAL;
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}
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return PAGER_LOCKINGMODE_QUERY;
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}
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#ifndef SQLITE_OMIT_AUTOVACUUM
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/*
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** Interpret the given string as an auto-vacuum mode value.
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**
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** The following strings, "none", "full" and "incremental" are
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** acceptable, as are their numeric equivalents: 0, 1 and 2 respectively.
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*/
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static int getAutoVacuum(const char *z){
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int i;
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if( 0==sqlite3StrICmp(z, "none") ) return BTREE_AUTOVACUUM_NONE;
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if( 0==sqlite3StrICmp(z, "full") ) return BTREE_AUTOVACUUM_FULL;
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if( 0==sqlite3StrICmp(z, "incremental") ) return BTREE_AUTOVACUUM_INCR;
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i = atoi(z);
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return (u8)((i>=0&&i<=2)?i:0);
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}
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#endif /* ifndef SQLITE_OMIT_AUTOVACUUM */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** Interpret the given string as a temp db location. Return 1 for file
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** backed temporary databases, 2 for the Red-Black tree in memory database
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** and 0 to use the compile-time default.
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*/
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static int getTempStore(const char *z){
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if( z[0]>='0' && z[0]<='2' ){
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return z[0] - '0';
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}else if( sqlite3StrICmp(z, "file")==0 ){
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return 1;
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}else if( sqlite3StrICmp(z, "memory")==0 ){
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return 2;
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}else{
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return 0;
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}
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** Invalidate temp storage, either when the temp storage is changed
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** from default, or when 'file' and the temp_store_directory has changed
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*/
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static int invalidateTempStorage(Parse *pParse){
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sqlite3 *db = pParse->db;
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if( db->aDb[1].pBt!=0 ){
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if( !db->autoCommit || sqlite3BtreeIsInReadTrans(db->aDb[1].pBt) ){
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sqlite3ErrorMsg(pParse, "temporary storage cannot be changed "
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"from within a transaction");
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return SQLITE_ERROR;
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}
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sqlite3BtreeClose(db->aDb[1].pBt);
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db->aDb[1].pBt = 0;
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sqlite3ResetInternalSchema(db, 0);
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}
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return SQLITE_OK;
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** If the TEMP database is open, close it and mark the database schema
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** as needing reloading. This must be done when using the SQLITE_TEMP_STORE
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** or DEFAULT_TEMP_STORE pragmas.
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*/
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static int changeTempStorage(Parse *pParse, const char *zStorageType){
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int ts = getTempStore(zStorageType);
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sqlite3 *db = pParse->db;
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if( db->temp_store==ts ) return SQLITE_OK;
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if( invalidateTempStorage( pParse ) != SQLITE_OK ){
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return SQLITE_ERROR;
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}
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db->temp_store = (u8)ts;
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return SQLITE_OK;
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}
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#endif /* SQLITE_PAGER_PRAGMAS */
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/*
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** Generate code to return a single integer value.
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*/
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static void returnSingleInt(Parse *pParse, const char *zLabel, i64 value){
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Vdbe *v = sqlite3GetVdbe(pParse);
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int mem = ++pParse->nMem;
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i64 *pI64 = sqlite3DbMallocRaw(pParse->db, sizeof(value));
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if( pI64 ){
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memcpy(pI64, &value, sizeof(value));
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}
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sqlite3VdbeAddOp4(v, OP_Int64, 0, mem, 0, (char*)pI64, P4_INT64);
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sqlite3VdbeSetNumCols(v, 1);
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sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC);
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sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1);
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}
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#ifndef SQLITE_OMIT_FLAG_PRAGMAS
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/*
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** Check to see if zRight and zLeft refer to a pragma that queries
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** or changes one of the flags in db->flags. Return 1 if so and 0 if not.
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** Also, implement the pragma.
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*/
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static int flagPragma(Parse *pParse, const char *zLeft, const char *zRight){
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static const struct sPragmaType {
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const char *zName; /* Name of the pragma */
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int mask; /* Mask for the db->flags value */
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} aPragma[] = {
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{ "full_column_names", SQLITE_FullColNames },
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{ "short_column_names", SQLITE_ShortColNames },
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{ "count_changes", SQLITE_CountRows },
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{ "empty_result_callbacks", SQLITE_NullCallback },
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{ "legacy_file_format", SQLITE_LegacyFileFmt },
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{ "fullfsync", SQLITE_FullFSync },
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{ "reverse_unordered_selects", SQLITE_ReverseOrder },
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#ifdef SQLITE_DEBUG
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{ "sql_trace", SQLITE_SqlTrace },
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{ "vdbe_listing", SQLITE_VdbeListing },
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{ "vdbe_trace", SQLITE_VdbeTrace },
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#endif
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#ifndef SQLITE_OMIT_CHECK
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{ "ignore_check_constraints", SQLITE_IgnoreChecks },
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#endif
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/* The following is VERY experimental */
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{ "writable_schema", SQLITE_WriteSchema|SQLITE_RecoveryMode },
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{ "omit_readlock", SQLITE_NoReadlock },
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/* TODO: Maybe it shouldn't be possible to change the ReadUncommitted
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** flag if there are any active statements. */
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{ "read_uncommitted", SQLITE_ReadUncommitted },
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};
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int i;
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const struct sPragmaType *p;
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for(i=0, p=aPragma; i<ArraySize(aPragma); i++, p++){
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if( sqlite3StrICmp(zLeft, p->zName)==0 ){
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sqlite3 *db = pParse->db;
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Vdbe *v;
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v = sqlite3GetVdbe(pParse);
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assert( v!=0 ); /* Already allocated by sqlite3Pragma() */
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if( ALWAYS(v) ){
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if( zRight==0 ){
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returnSingleInt(pParse, p->zName, (db->flags & p->mask)!=0 );
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}else{
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if( getBoolean(zRight) ){
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db->flags |= p->mask;
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}else{
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db->flags &= ~p->mask;
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}
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/* Many of the flag-pragmas modify the code generated by the SQL
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** compiler (eg. count_changes). So add an opcode to expire all
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** compiled SQL statements after modifying a pragma value.
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*/
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sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
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}
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}
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return 1;
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}
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}
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return 0;
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}
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#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
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/*
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** Return a human-readable name for a constraint resolution action.
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*/
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static const char *actionName(u8 action){
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const char *zName;
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switch( action ){
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case OE_SetNull: zName = "SET NULL"; break;
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case OE_SetDflt: zName = "SET DEFAULT"; break;
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case OE_Cascade: zName = "CASCADE"; break;
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default: zName = "RESTRICT";
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assert( action==OE_Restrict ); break;
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}
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return zName;
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}
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/*
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** Process a pragma statement.
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**
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** Pragmas are of this form:
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**
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** PRAGMA [database.]id [= value]
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**
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** The identifier might also be a string. The value is a string, and
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** identifier, or a number. If minusFlag is true, then the value is
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** a number that was preceded by a minus sign.
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**
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** If the left side is "database.id" then pId1 is the database name
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** and pId2 is the id. If the left side is just "id" then pId1 is the
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** id and pId2 is any empty string.
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*/
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void sqlite3Pragma(
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Parse *pParse,
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Token *pId1, /* First part of [database.]id field */
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Token *pId2, /* Second part of [database.]id field, or NULL */
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Token *pValue, /* Token for <value>, or NULL */
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int minusFlag /* True if a '-' sign preceded <value> */
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){
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char *zLeft = 0; /* Nul-terminated UTF-8 string <id> */
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char *zRight = 0; /* Nul-terminated UTF-8 string <value>, or NULL */
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const char *zDb = 0; /* The database name */
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Token *pId; /* Pointer to <id> token */
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int iDb; /* Database index for <database> */
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sqlite3 *db = pParse->db;
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Db *pDb;
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Vdbe *v = pParse->pVdbe = sqlite3VdbeCreate(db);
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if( v==0 ) return;
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pParse->nMem = 2;
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/* Interpret the [database.] part of the pragma statement. iDb is the
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** index of the database this pragma is being applied to in db.aDb[]. */
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iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId);
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if( iDb<0 ) return;
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pDb = &db->aDb[iDb];
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|
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/* If the temp database has been explicitly named as part of the
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** pragma, make sure it is open.
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*/
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if( iDb==1 && sqlite3OpenTempDatabase(pParse) ){
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return;
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}
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zLeft = sqlite3NameFromToken(db, pId);
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if( !zLeft ) return;
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if( minusFlag ){
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zRight = sqlite3MPrintf(db, "-%T", pValue);
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}else{
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zRight = sqlite3NameFromToken(db, pValue);
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}
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assert( pId2 );
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zDb = pId2->n>0 ? pDb->zName : 0;
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if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
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goto pragma_out;
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}
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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/*
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** PRAGMA [database.]default_cache_size
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** PRAGMA [database.]default_cache_size=N
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**
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** The first form reports the current persistent setting for the
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** page cache size. The value returned is the maximum number of
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** pages in the page cache. The second form sets both the current
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** page cache size value and the persistent page cache size value
|
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** stored in the database file.
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**
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** The default cache size is stored in meta-value 2 of page 1 of the
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** database file. The cache size is actually the absolute value of
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** this memory location. The sign of meta-value 2 determines the
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** synchronous setting. A negative value means synchronous is off
|
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** and a positive value means synchronous is on.
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*/
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if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){
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static const VdbeOpList getCacheSize[] = {
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{ OP_ReadCookie, 0, 1, 2}, /* 0 */
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{ OP_IfPos, 1, 6, 0},
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{ OP_Integer, 0, 2, 0},
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{ OP_Subtract, 1, 2, 1},
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{ OP_IfPos, 1, 6, 0},
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{ OP_Integer, 0, 1, 0}, /* 5 */
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{ OP_ResultRow, 1, 1, 0},
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};
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int addr;
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if( sqlite3ReadSchema(pParse) ) goto pragma_out;
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sqlite3VdbeUsesBtree(v, iDb);
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if( !zRight ){
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sqlite3VdbeSetNumCols(v, 1);
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sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", SQLITE_STATIC);
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pParse->nMem += 2;
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addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize);
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sqlite3VdbeChangeP1(v, addr, iDb);
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sqlite3VdbeChangeP1(v, addr+5, SQLITE_DEFAULT_CACHE_SIZE);
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}else{
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int size = atoi(zRight);
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if( size<0 ) size = -size;
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sqlite3BeginWriteOperation(pParse, 0, iDb);
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sqlite3VdbeAddOp2(v, OP_Integer, size, 1);
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sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, 2, 2);
|
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addr = sqlite3VdbeAddOp2(v, OP_IfPos, 2, 0);
|
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sqlite3VdbeAddOp2(v, OP_Integer, -size, 1);
|
|
sqlite3VdbeJumpHere(v, addr);
|
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sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, 2, 1);
|
|
pDb->pSchema->cache_size = size;
|
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sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
|
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}
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]page_size
|
|
** PRAGMA [database.]page_size=N
|
|
**
|
|
** The first form reports the current setting for the
|
|
** database page size in bytes. The second form sets the
|
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** database page size value. The value can only be set if
|
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** the database has not yet been created.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"page_size")==0 ){
|
|
Btree *pBt = pDb->pBt;
|
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assert( pBt!=0 );
|
|
if( !zRight ){
|
|
int size = ALWAYS(pBt) ? sqlite3BtreeGetPageSize(pBt) : 0;
|
|
returnSingleInt(pParse, "page_size", size);
|
|
}else{
|
|
/* Malloc may fail when setting the page-size, as there is an internal
|
|
** buffer that the pager module resizes using sqlite3_realloc().
|
|
*/
|
|
db->nextPagesize = atoi(zRight);
|
|
if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){
|
|
db->mallocFailed = 1;
|
|
}
|
|
}
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]max_page_count
|
|
** PRAGMA [database.]max_page_count=N
|
|
**
|
|
** The first form reports the current setting for the
|
|
** maximum number of pages in the database file. The
|
|
** second form attempts to change this setting. Both
|
|
** forms return the current setting.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"max_page_count")==0 ){
|
|
Btree *pBt = pDb->pBt;
|
|
int newMax = 0;
|
|
assert( pBt!=0 );
|
|
if( zRight ){
|
|
newMax = atoi(zRight);
|
|
}
|
|
if( ALWAYS(pBt) ){
|
|
newMax = sqlite3BtreeMaxPageCount(pBt, newMax);
|
|
}
|
|
returnSingleInt(pParse, "max_page_count", newMax);
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]page_count
|
|
**
|
|
** Return the number of pages in the specified database.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"page_count")==0 ){
|
|
int iReg;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
sqlite3CodeVerifySchema(pParse, iDb);
|
|
iReg = ++pParse->nMem;
|
|
sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1);
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "page_count", SQLITE_STATIC);
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]locking_mode
|
|
** PRAGMA [database.]locking_mode = (normal|exclusive)
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"locking_mode")==0 ){
|
|
const char *zRet = "normal";
|
|
int eMode = getLockingMode(zRight);
|
|
|
|
if( pId2->n==0 && eMode==PAGER_LOCKINGMODE_QUERY ){
|
|
/* Simple "PRAGMA locking_mode;" statement. This is a query for
|
|
** the current default locking mode (which may be different to
|
|
** the locking-mode of the main database).
|
|
*/
|
|
eMode = db->dfltLockMode;
|
|
}else{
|
|
Pager *pPager;
|
|
if( pId2->n==0 ){
|
|
/* This indicates that no database name was specified as part
|
|
** of the PRAGMA command. In this case the locking-mode must be
|
|
** set on all attached databases, as well as the main db file.
|
|
**
|
|
** Also, the sqlite3.dfltLockMode variable is set so that
|
|
** any subsequently attached databases also use the specified
|
|
** locking mode.
|
|
*/
|
|
int ii;
|
|
assert(pDb==&db->aDb[0]);
|
|
for(ii=2; ii<db->nDb; ii++){
|
|
pPager = sqlite3BtreePager(db->aDb[ii].pBt);
|
|
sqlite3PagerLockingMode(pPager, eMode);
|
|
}
|
|
db->dfltLockMode = (u8)eMode;
|
|
}
|
|
pPager = sqlite3BtreePager(pDb->pBt);
|
|
eMode = sqlite3PagerLockingMode(pPager, eMode);
|
|
}
|
|
|
|
assert(eMode==PAGER_LOCKINGMODE_NORMAL||eMode==PAGER_LOCKINGMODE_EXCLUSIVE);
|
|
if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){
|
|
zRet = "exclusive";
|
|
}
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", SQLITE_STATIC);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zRet, 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]journal_mode
|
|
** PRAGMA [database.]journal_mode = (delete|persist|off|truncate|memory)
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"journal_mode")==0 ){
|
|
int eMode;
|
|
static char * const azModeName[] = {
|
|
"delete", "persist", "off", "truncate", "memory"
|
|
};
|
|
|
|
if( zRight==0 ){
|
|
eMode = PAGER_JOURNALMODE_QUERY;
|
|
}else{
|
|
int n = sqlite3Strlen30(zRight);
|
|
eMode = sizeof(azModeName)/sizeof(azModeName[0]) - 1;
|
|
while( eMode>=0 && sqlite3StrNICmp(zRight, azModeName[eMode], n)!=0 ){
|
|
eMode--;
|
|
}
|
|
}
|
|
if( pId2->n==0 && eMode==PAGER_JOURNALMODE_QUERY ){
|
|
/* Simple "PRAGMA journal_mode;" statement. This is a query for
|
|
** the current default journal mode (which may be different to
|
|
** the journal-mode of the main database).
|
|
*/
|
|
eMode = db->dfltJournalMode;
|
|
}else{
|
|
Pager *pPager;
|
|
if( pId2->n==0 ){
|
|
/* This indicates that no database name was specified as part
|
|
** of the PRAGMA command. In this case the journal-mode must be
|
|
** set on all attached databases, as well as the main db file.
|
|
**
|
|
** Also, the sqlite3.dfltJournalMode variable is set so that
|
|
** any subsequently attached databases also use the specified
|
|
** journal mode.
|
|
*/
|
|
int ii;
|
|
assert(pDb==&db->aDb[0]);
|
|
for(ii=1; ii<db->nDb; ii++){
|
|
if( db->aDb[ii].pBt ){
|
|
pPager = sqlite3BtreePager(db->aDb[ii].pBt);
|
|
sqlite3PagerJournalMode(pPager, eMode);
|
|
}
|
|
}
|
|
db->dfltJournalMode = (u8)eMode;
|
|
}
|
|
pPager = sqlite3BtreePager(pDb->pBt);
|
|
eMode = sqlite3PagerJournalMode(pPager, eMode);
|
|
}
|
|
assert( eMode==PAGER_JOURNALMODE_DELETE
|
|
|| eMode==PAGER_JOURNALMODE_TRUNCATE
|
|
|| eMode==PAGER_JOURNALMODE_PERSIST
|
|
|| eMode==PAGER_JOURNALMODE_OFF
|
|
|| eMode==PAGER_JOURNALMODE_MEMORY );
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "journal_mode", SQLITE_STATIC);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0,
|
|
azModeName[eMode], P4_STATIC);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA [database.]journal_size_limit
|
|
** PRAGMA [database.]journal_size_limit=N
|
|
**
|
|
** Get or set the size limit on rollback journal files.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"journal_size_limit")==0 ){
|
|
Pager *pPager = sqlite3BtreePager(pDb->pBt);
|
|
i64 iLimit = -2;
|
|
if( zRight ){
|
|
sqlite3Atoi64(zRight, &iLimit);
|
|
if( iLimit<-1 ) iLimit = -1;
|
|
}
|
|
iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit);
|
|
returnSingleInt(pParse, "journal_size_limit", iLimit);
|
|
}else
|
|
|
|
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
|
|
|
|
/*
|
|
** PRAGMA [database.]auto_vacuum
|
|
** PRAGMA [database.]auto_vacuum=N
|
|
**
|
|
** Get or set the value of the database 'auto-vacuum' parameter.
|
|
** The value is one of: 0 NONE 1 FULL 2 INCREMENTAL
|
|
*/
|
|
#ifndef SQLITE_OMIT_AUTOVACUUM
|
|
if( sqlite3StrICmp(zLeft,"auto_vacuum")==0 ){
|
|
Btree *pBt = pDb->pBt;
|
|
assert( pBt!=0 );
|
|
if( sqlite3ReadSchema(pParse) ){
|
|
goto pragma_out;
|
|
}
|
|
if( !zRight ){
|
|
int auto_vacuum;
|
|
if( ALWAYS(pBt) ){
|
|
auto_vacuum = sqlite3BtreeGetAutoVacuum(pBt);
|
|
}else{
|
|
auto_vacuum = SQLITE_DEFAULT_AUTOVACUUM;
|
|
}
|
|
returnSingleInt(pParse, "auto_vacuum", auto_vacuum);
|
|
}else{
|
|
int eAuto = getAutoVacuum(zRight);
|
|
assert( eAuto>=0 && eAuto<=2 );
|
|
db->nextAutovac = (u8)eAuto;
|
|
if( ALWAYS(eAuto>=0) ){
|
|
/* Call SetAutoVacuum() to set initialize the internal auto and
|
|
** incr-vacuum flags. This is required in case this connection
|
|
** creates the database file. It is important that it is created
|
|
** as an auto-vacuum capable db.
|
|
*/
|
|
int rc = sqlite3BtreeSetAutoVacuum(pBt, eAuto);
|
|
if( rc==SQLITE_OK && (eAuto==1 || eAuto==2) ){
|
|
/* When setting the auto_vacuum mode to either "full" or
|
|
** "incremental", write the value of meta[6] in the database
|
|
** file. Before writing to meta[6], check that meta[3] indicates
|
|
** that this really is an auto-vacuum capable database.
|
|
*/
|
|
static const VdbeOpList setMeta6[] = {
|
|
{ OP_Transaction, 0, 1, 0}, /* 0 */
|
|
{ OP_ReadCookie, 0, 1, 3}, /* 1 */
|
|
{ OP_If, 1, 0, 0}, /* 2 */
|
|
{ OP_Halt, SQLITE_OK, OE_Abort, 0}, /* 3 */
|
|
{ OP_Integer, 0, 1, 0}, /* 4 */
|
|
{ OP_SetCookie, 0, 6, 1}, /* 5 */
|
|
};
|
|
int iAddr;
|
|
iAddr = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6);
|
|
sqlite3VdbeChangeP1(v, iAddr, iDb);
|
|
sqlite3VdbeChangeP1(v, iAddr+1, iDb);
|
|
sqlite3VdbeChangeP2(v, iAddr+2, iAddr+4);
|
|
sqlite3VdbeChangeP1(v, iAddr+4, eAuto-1);
|
|
sqlite3VdbeChangeP1(v, iAddr+5, iDb);
|
|
sqlite3VdbeUsesBtree(v, iDb);
|
|
}
|
|
}
|
|
}
|
|
}else
|
|
#endif
|
|
|
|
/*
|
|
** PRAGMA [database.]incremental_vacuum(N)
|
|
**
|
|
** Do N steps of incremental vacuuming on a database.
|
|
*/
|
|
#ifndef SQLITE_OMIT_AUTOVACUUM
|
|
if( sqlite3StrICmp(zLeft,"incremental_vacuum")==0 ){
|
|
int iLimit, addr;
|
|
if( sqlite3ReadSchema(pParse) ){
|
|
goto pragma_out;
|
|
}
|
|
if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){
|
|
iLimit = 0x7fffffff;
|
|
}
|
|
sqlite3BeginWriteOperation(pParse, 0, iDb);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, iLimit, 1);
|
|
addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb);
|
|
sqlite3VdbeAddOp1(v, OP_ResultRow, 1);
|
|
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1);
|
|
sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr);
|
|
sqlite3VdbeJumpHere(v, addr);
|
|
}else
|
|
#endif
|
|
|
|
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
|
|
/*
|
|
** PRAGMA [database.]cache_size
|
|
** PRAGMA [database.]cache_size=N
|
|
**
|
|
** The first form reports the current local setting for the
|
|
** page cache size. The local setting can be different from
|
|
** the persistent cache size value that is stored in the database
|
|
** file itself. The value returned is the maximum number of
|
|
** pages in the page cache. The second form sets the local
|
|
** page cache size value. It does not change the persistent
|
|
** cache size stored on the disk so the cache size will revert
|
|
** to its default value when the database is closed and reopened.
|
|
** N should be a positive integer.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"cache_size")==0 ){
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
if( !zRight ){
|
|
returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
|
|
}else{
|
|
int size = atoi(zRight);
|
|
if( size<0 ) size = -size;
|
|
pDb->pSchema->cache_size = size;
|
|
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
|
|
}
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA temp_store
|
|
** PRAGMA temp_store = "default"|"memory"|"file"
|
|
**
|
|
** Return or set the local value of the temp_store flag. Changing
|
|
** the local value does not make changes to the disk file and the default
|
|
** value will be restored the next time the database is opened.
|
|
**
|
|
** Note that it is possible for the library compile-time options to
|
|
** override this setting
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "temp_store")==0 ){
|
|
if( !zRight ){
|
|
returnSingleInt(pParse, "temp_store", db->temp_store);
|
|
}else{
|
|
changeTempStorage(pParse, zRight);
|
|
}
|
|
}else
|
|
|
|
/*
|
|
** PRAGMA temp_store_directory
|
|
** PRAGMA temp_store_directory = ""|"directory_name"
|
|
**
|
|
** Return or set the local value of the temp_store_directory flag. Changing
|
|
** the value sets a specific directory to be used for temporary files.
|
|
** Setting to a null string reverts to the default temporary directory search.
|
|
** If temporary directory is changed, then invalidateTempStorage.
|
|
**
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "temp_store_directory")==0 ){
|
|
if( !zRight ){
|
|
if( sqlite3_temp_directory ){
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
|
|
"temp_store_directory", SQLITE_STATIC);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_temp_directory, 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
|
|
}
|
|
}else{
|
|
#ifndef SQLITE_OMIT_WSD
|
|
if( zRight[0] ){
|
|
int rc;
|
|
int res;
|
|
rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res);
|
|
if( rc!=SQLITE_OK || res==0 ){
|
|
sqlite3ErrorMsg(pParse, "not a writable directory");
|
|
goto pragma_out;
|
|
}
|
|
}
|
|
if( SQLITE_TEMP_STORE==0
|
|
|| (SQLITE_TEMP_STORE==1 && db->temp_store<=1)
|
|
|| (SQLITE_TEMP_STORE==2 && db->temp_store==1)
|
|
){
|
|
invalidateTempStorage(pParse);
|
|
}
|
|
sqlite3_free(sqlite3_temp_directory);
|
|
if( zRight[0] ){
|
|
sqlite3_temp_directory = sqlite3DbStrDup(0, zRight);
|
|
}else{
|
|
sqlite3_temp_directory = 0;
|
|
}
|
|
#endif /* SQLITE_OMIT_WSD */
|
|
}
|
|
}else
|
|
|
|
#if !defined(SQLITE_ENABLE_LOCKING_STYLE)
|
|
# if defined(__APPLE__)
|
|
# define SQLITE_ENABLE_LOCKING_STYLE 1
|
|
# else
|
|
# define SQLITE_ENABLE_LOCKING_STYLE 0
|
|
# endif
|
|
#endif
|
|
#if SQLITE_ENABLE_LOCKING_STYLE
|
|
/*
|
|
** PRAGMA [database.]lock_proxy_file
|
|
** PRAGMA [database.]lock_proxy_file = ":auto:"|"lock_file_path"
|
|
**
|
|
** Return or set the value of the lock_proxy_file flag. Changing
|
|
** the value sets a specific file to be used for database access locks.
|
|
**
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "lock_proxy_file")==0 ){
|
|
if( !zRight ){
|
|
Pager *pPager = sqlite3BtreePager(pDb->pBt);
|
|
char *proxy_file_path = NULL;
|
|
sqlite3_file *pFile = sqlite3PagerFile(pPager);
|
|
sqlite3OsFileControl(pFile, SQLITE_GET_LOCKPROXYFILE,
|
|
&proxy_file_path);
|
|
|
|
if( proxy_file_path ){
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
|
|
"lock_proxy_file", SQLITE_STATIC);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, proxy_file_path, 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
|
|
}
|
|
}else{
|
|
Pager *pPager = sqlite3BtreePager(pDb->pBt);
|
|
sqlite3_file *pFile = sqlite3PagerFile(pPager);
|
|
int res;
|
|
if( zRight[0] ){
|
|
res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE,
|
|
zRight);
|
|
} else {
|
|
res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE,
|
|
NULL);
|
|
}
|
|
if( res!=SQLITE_OK ){
|
|
sqlite3ErrorMsg(pParse, "failed to set lock proxy file");
|
|
goto pragma_out;
|
|
}
|
|
}
|
|
}else
|
|
#endif /* SQLITE_ENABLE_LOCKING_STYLE */
|
|
|
|
/*
|
|
** PRAGMA [database.]synchronous
|
|
** PRAGMA [database.]synchronous=OFF|ON|NORMAL|FULL
|
|
**
|
|
** Return or set the local value of the synchronous flag. Changing
|
|
** the local value does not make changes to the disk file and the
|
|
** default value will be restored the next time the database is
|
|
** opened.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft,"synchronous")==0 ){
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
if( !zRight ){
|
|
returnSingleInt(pParse, "synchronous", pDb->safety_level-1);
|
|
}else{
|
|
if( !db->autoCommit ){
|
|
sqlite3ErrorMsg(pParse,
|
|
"Safety level may not be changed inside a transaction");
|
|
}else{
|
|
pDb->safety_level = getSafetyLevel(zRight)+1;
|
|
}
|
|
}
|
|
}else
|
|
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
|
|
|
|
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
|
|
if( flagPragma(pParse, zLeft, zRight) ){
|
|
/* The flagPragma() subroutine also generates any necessary code
|
|
** there is nothing more to do here */
|
|
}else
|
|
#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
|
|
|
|
#ifndef SQLITE_OMIT_SCHEMA_PRAGMAS
|
|
/*
|
|
** PRAGMA table_info(<table>)
|
|
**
|
|
** Return a single row for each column of the named table. The columns of
|
|
** the returned data set are:
|
|
**
|
|
** cid: Column id (numbered from left to right, starting at 0)
|
|
** name: Column name
|
|
** type: Column declaration type.
|
|
** notnull: True if 'NOT NULL' is part of column declaration
|
|
** dflt_value: The default value for the column, if any.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "table_info")==0 && zRight ){
|
|
Table *pTab;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
if( pTab ){
|
|
int i;
|
|
int nHidden = 0;
|
|
Column *pCol;
|
|
sqlite3VdbeSetNumCols(v, 6);
|
|
pParse->nMem = 6;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", SQLITE_STATIC);
|
|
sqlite3ViewGetColumnNames(pParse, pTab);
|
|
for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
|
|
if( IsHiddenColumn(pCol) ){
|
|
nHidden++;
|
|
continue;
|
|
}
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i-nHidden, 1);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pCol->zName, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
|
|
pCol->zType ? pCol->zType : "", 0);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, (pCol->notNull ? 1 : 0), 4);
|
|
if( pCol->zDflt ){
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, (char*)pCol->zDflt, 0);
|
|
}else{
|
|
sqlite3VdbeAddOp2(v, OP_Null, 0, 5);
|
|
}
|
|
sqlite3VdbeAddOp2(v, OP_Integer, pCol->isPrimKey, 6);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6);
|
|
}
|
|
}
|
|
}else
|
|
|
|
if( sqlite3StrICmp(zLeft, "index_info")==0 && zRight ){
|
|
Index *pIdx;
|
|
Table *pTab;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
pIdx = sqlite3FindIndex(db, zRight, zDb);
|
|
if( pIdx ){
|
|
int i;
|
|
pTab = pIdx->pTable;
|
|
sqlite3VdbeSetNumCols(v, 3);
|
|
pParse->nMem = 3;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC);
|
|
for(i=0; i<pIdx->nColumn; i++){
|
|
int cnum = pIdx->aiColumn[i];
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2);
|
|
assert( pTab->nCol>cnum );
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
|
|
}
|
|
}
|
|
}else
|
|
|
|
if( sqlite3StrICmp(zLeft, "index_list")==0 && zRight ){
|
|
Index *pIdx;
|
|
Table *pTab;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
if( pTab ){
|
|
v = sqlite3GetVdbe(pParse);
|
|
pIdx = pTab->pIndex;
|
|
if( pIdx ){
|
|
int i = 0;
|
|
sqlite3VdbeSetNumCols(v, 3);
|
|
pParse->nMem = 3;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC);
|
|
while(pIdx){
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, pIdx->onError!=OE_None, 3);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
|
|
++i;
|
|
pIdx = pIdx->pNext;
|
|
}
|
|
}
|
|
}
|
|
}else
|
|
|
|
if( sqlite3StrICmp(zLeft, "database_list")==0 ){
|
|
int i;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
sqlite3VdbeSetNumCols(v, 3);
|
|
pParse->nMem = 3;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", SQLITE_STATIC);
|
|
for(i=0; i<db->nDb; i++){
|
|
if( db->aDb[i].pBt==0 ) continue;
|
|
assert( db->aDb[i].zName!=0 );
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, db->aDb[i].zName, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
|
|
sqlite3BtreeGetFilename(db->aDb[i].pBt), 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
|
|
}
|
|
}else
|
|
|
|
if( sqlite3StrICmp(zLeft, "collation_list")==0 ){
|
|
int i = 0;
|
|
HashElem *p;
|
|
sqlite3VdbeSetNumCols(v, 2);
|
|
pParse->nMem = 2;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
|
|
for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
|
|
CollSeq *pColl = (CollSeq *)sqliteHashData(p);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i++, 1);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pColl->zName, 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2);
|
|
}
|
|
}else
|
|
#endif /* SQLITE_OMIT_SCHEMA_PRAGMAS */
|
|
|
|
#ifndef SQLITE_OMIT_FOREIGN_KEY
|
|
if( sqlite3StrICmp(zLeft, "foreign_key_list")==0 && zRight ){
|
|
FKey *pFK;
|
|
Table *pTab;
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
pTab = sqlite3FindTable(db, zRight, zDb);
|
|
if( pTab ){
|
|
v = sqlite3GetVdbe(pParse);
|
|
pFK = pTab->pFKey;
|
|
if( pFK ){
|
|
int i = 0;
|
|
sqlite3VdbeSetNumCols(v, 8);
|
|
pParse->nMem = 8;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "on_update", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 6, COLNAME_NAME, "on_delete", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 7, COLNAME_NAME, "match", SQLITE_STATIC);
|
|
while(pFK){
|
|
int j;
|
|
for(j=0; j<pFK->nCol; j++){
|
|
char *zCol = pFK->aCol[j].zCol;
|
|
char *zOnUpdate = (char *)actionName(pFK->updateConf);
|
|
char *zOnDelete = (char *)actionName(pFK->deleteConf);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, j, 2);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pFK->zTo, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0,
|
|
pTab->aCol[pFK->aCol[j].iFrom].zName, 0);
|
|
sqlite3VdbeAddOp4(v, zCol ? OP_String8 : OP_Null, 0, 5, 0, zCol, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 6, 0, zOnUpdate, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 7, 0, zOnDelete, 0);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 8, 0, "NONE", 0);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 8);
|
|
}
|
|
++i;
|
|
pFK = pFK->pNextFrom;
|
|
}
|
|
}
|
|
}
|
|
}else
|
|
#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
|
|
|
|
#ifndef NDEBUG
|
|
if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
|
|
if( zRight ){
|
|
if( getBoolean(zRight) ){
|
|
sqlite3ParserTrace(stderr, "parser: ");
|
|
}else{
|
|
sqlite3ParserTrace(0, 0);
|
|
}
|
|
}
|
|
}else
|
|
#endif
|
|
|
|
/* Reinstall the LIKE and GLOB functions. The variant of LIKE
|
|
** used will be case sensitive or not depending on the RHS.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){
|
|
if( zRight ){
|
|
sqlite3RegisterLikeFunctions(db, getBoolean(zRight));
|
|
}
|
|
}else
|
|
|
|
#ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX
|
|
# define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100
|
|
#endif
|
|
|
|
#ifndef SQLITE_OMIT_INTEGRITY_CHECK
|
|
/* Pragma "quick_check" is an experimental reduced version of
|
|
** integrity_check designed to detect most database corruption
|
|
** without most of the overhead of a full integrity-check.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "integrity_check")==0
|
|
|| sqlite3StrICmp(zLeft, "quick_check")==0
|
|
){
|
|
int i, j, addr, mxErr;
|
|
|
|
/* Code that appears at the end of the integrity check. If no error
|
|
** messages have been generated, output OK. Otherwise output the
|
|
** error message
|
|
*/
|
|
static const VdbeOpList endCode[] = {
|
|
{ OP_AddImm, 1, 0, 0}, /* 0 */
|
|
{ OP_IfNeg, 1, 0, 0}, /* 1 */
|
|
{ OP_String8, 0, 3, 0}, /* 2 */
|
|
{ OP_ResultRow, 3, 1, 0},
|
|
};
|
|
|
|
int isQuick = (zLeft[0]=='q');
|
|
|
|
/* Initialize the VDBE program */
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
pParse->nMem = 6;
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", SQLITE_STATIC);
|
|
|
|
/* Set the maximum error count */
|
|
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
|
|
if( zRight ){
|
|
mxErr = atoi(zRight);
|
|
if( mxErr<=0 ){
|
|
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
|
|
}
|
|
}
|
|
sqlite3VdbeAddOp2(v, OP_Integer, mxErr, 1); /* reg[1] holds errors left */
|
|
|
|
/* Do an integrity check on each database file */
|
|
for(i=0; i<db->nDb; i++){
|
|
HashElem *x;
|
|
Hash *pTbls;
|
|
int cnt = 0;
|
|
|
|
if( OMIT_TEMPDB && i==1 ) continue;
|
|
|
|
sqlite3CodeVerifySchema(pParse, i);
|
|
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Halt if out of errors */
|
|
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
|
|
sqlite3VdbeJumpHere(v, addr);
|
|
|
|
/* Do an integrity check of the B-Tree
|
|
**
|
|
** Begin by filling registers 2, 3, ... with the root pages numbers
|
|
** for all tables and indices in the database.
|
|
*/
|
|
pTbls = &db->aDb[i].pSchema->tblHash;
|
|
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
|
|
Table *pTab = sqliteHashData(x);
|
|
Index *pIdx;
|
|
sqlite3VdbeAddOp2(v, OP_Integer, pTab->tnum, 2+cnt);
|
|
cnt++;
|
|
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
|
|
sqlite3VdbeAddOp2(v, OP_Integer, pIdx->tnum, 2+cnt);
|
|
cnt++;
|
|
}
|
|
}
|
|
|
|
/* Make sure sufficient number of registers have been allocated */
|
|
if( pParse->nMem < cnt+4 ){
|
|
pParse->nMem = cnt+4;
|
|
}
|
|
|
|
/* Do the b-tree integrity checks */
|
|
sqlite3VdbeAddOp3(v, OP_IntegrityCk, 2, cnt, 1);
|
|
sqlite3VdbeChangeP5(v, (u8)i);
|
|
addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2);
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
|
|
sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName),
|
|
P4_DYNAMIC);
|
|
sqlite3VdbeAddOp3(v, OP_Move, 2, 4, 1);
|
|
sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 2);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 2, 1);
|
|
sqlite3VdbeJumpHere(v, addr);
|
|
|
|
/* Make sure all the indices are constructed correctly.
|
|
*/
|
|
for(x=sqliteHashFirst(pTbls); x && !isQuick; x=sqliteHashNext(x)){
|
|
Table *pTab = sqliteHashData(x);
|
|
Index *pIdx;
|
|
int loopTop;
|
|
|
|
if( pTab->pIndex==0 ) continue;
|
|
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Stop if out of errors */
|
|
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
|
|
sqlite3VdbeJumpHere(v, addr);
|
|
sqlite3OpenTableAndIndices(pParse, pTab, 1, OP_OpenRead);
|
|
sqlite3VdbeAddOp2(v, OP_Integer, 0, 2); /* reg(2) will count entries */
|
|
loopTop = sqlite3VdbeAddOp2(v, OP_Rewind, 1, 0);
|
|
sqlite3VdbeAddOp2(v, OP_AddImm, 2, 1); /* increment entry count */
|
|
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
|
|
int jmp2;
|
|
static const VdbeOpList idxErr[] = {
|
|
{ OP_AddImm, 1, -1, 0},
|
|
{ OP_String8, 0, 3, 0}, /* 1 */
|
|
{ OP_Rowid, 1, 4, 0},
|
|
{ OP_String8, 0, 5, 0}, /* 3 */
|
|
{ OP_String8, 0, 6, 0}, /* 4 */
|
|
{ OP_Concat, 4, 3, 3},
|
|
{ OP_Concat, 5, 3, 3},
|
|
{ OP_Concat, 6, 3, 3},
|
|
{ OP_ResultRow, 3, 1, 0},
|
|
{ OP_IfPos, 1, 0, 0}, /* 9 */
|
|
{ OP_Halt, 0, 0, 0},
|
|
};
|
|
sqlite3GenerateIndexKey(pParse, pIdx, 1, 3, 1);
|
|
jmp2 = sqlite3VdbeAddOp3(v, OP_Found, j+2, 0, 3);
|
|
addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr);
|
|
sqlite3VdbeChangeP4(v, addr+1, "rowid ", P4_STATIC);
|
|
sqlite3VdbeChangeP4(v, addr+3, " missing from index ", P4_STATIC);
|
|
sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_STATIC);
|
|
sqlite3VdbeJumpHere(v, addr+9);
|
|
sqlite3VdbeJumpHere(v, jmp2);
|
|
}
|
|
sqlite3VdbeAddOp2(v, OP_Next, 1, loopTop+1);
|
|
sqlite3VdbeJumpHere(v, loopTop);
|
|
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
|
|
static const VdbeOpList cntIdx[] = {
|
|
{ OP_Integer, 0, 3, 0},
|
|
{ OP_Rewind, 0, 0, 0}, /* 1 */
|
|
{ OP_AddImm, 3, 1, 0},
|
|
{ OP_Next, 0, 0, 0}, /* 3 */
|
|
{ OP_Eq, 2, 0, 3}, /* 4 */
|
|
{ OP_AddImm, 1, -1, 0},
|
|
{ OP_String8, 0, 2, 0}, /* 6 */
|
|
{ OP_String8, 0, 3, 0}, /* 7 */
|
|
{ OP_Concat, 3, 2, 2},
|
|
{ OP_ResultRow, 2, 1, 0},
|
|
};
|
|
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1);
|
|
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
|
|
sqlite3VdbeJumpHere(v, addr);
|
|
addr = sqlite3VdbeAddOpList(v, ArraySize(cntIdx), cntIdx);
|
|
sqlite3VdbeChangeP1(v, addr+1, j+2);
|
|
sqlite3VdbeChangeP2(v, addr+1, addr+4);
|
|
sqlite3VdbeChangeP1(v, addr+3, j+2);
|
|
sqlite3VdbeChangeP2(v, addr+3, addr+2);
|
|
sqlite3VdbeJumpHere(v, addr+4);
|
|
sqlite3VdbeChangeP4(v, addr+6,
|
|
"wrong # of entries in index ", P4_STATIC);
|
|
sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_STATIC);
|
|
}
|
|
}
|
|
}
|
|
addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode);
|
|
sqlite3VdbeChangeP2(v, addr, -mxErr);
|
|
sqlite3VdbeJumpHere(v, addr+1);
|
|
sqlite3VdbeChangeP4(v, addr+2, "ok", P4_STATIC);
|
|
}else
|
|
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */
|
|
|
|
#ifndef SQLITE_OMIT_UTF16
|
|
/*
|
|
** PRAGMA encoding
|
|
** PRAGMA encoding = "utf-8"|"utf-16"|"utf-16le"|"utf-16be"
|
|
**
|
|
** In its first form, this pragma returns the encoding of the main
|
|
** database. If the database is not initialized, it is initialized now.
|
|
**
|
|
** The second form of this pragma is a no-op if the main database file
|
|
** has not already been initialized. In this case it sets the default
|
|
** encoding that will be used for the main database file if a new file
|
|
** is created. If an existing main database file is opened, then the
|
|
** default text encoding for the existing database is used.
|
|
**
|
|
** In all cases new databases created using the ATTACH command are
|
|
** created to use the same default text encoding as the main database. If
|
|
** the main database has not been initialized and/or created when ATTACH
|
|
** is executed, this is done before the ATTACH operation.
|
|
**
|
|
** In the second form this pragma sets the text encoding to be used in
|
|
** new database files created using this database handle. It is only
|
|
** useful if invoked immediately after the main database i
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "encoding")==0 ){
|
|
static const struct EncName {
|
|
char *zName;
|
|
u8 enc;
|
|
} encnames[] = {
|
|
{ "UTF8", SQLITE_UTF8 },
|
|
{ "UTF-8", SQLITE_UTF8 }, /* Must be element [1] */
|
|
{ "UTF-16le", SQLITE_UTF16LE }, /* Must be element [2] */
|
|
{ "UTF-16be", SQLITE_UTF16BE }, /* Must be element [3] */
|
|
{ "UTF16le", SQLITE_UTF16LE },
|
|
{ "UTF16be", SQLITE_UTF16BE },
|
|
{ "UTF-16", 0 }, /* SQLITE_UTF16NATIVE */
|
|
{ "UTF16", 0 }, /* SQLITE_UTF16NATIVE */
|
|
{ 0, 0 }
|
|
};
|
|
const struct EncName *pEnc;
|
|
if( !zRight ){ /* "PRAGMA encoding" */
|
|
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", SQLITE_STATIC);
|
|
sqlite3VdbeAddOp2(v, OP_String8, 0, 1);
|
|
assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 );
|
|
assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE );
|
|
assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE );
|
|
sqlite3VdbeChangeP4(v, -1, encnames[ENC(pParse->db)].zName, P4_STATIC);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
|
|
}else{ /* "PRAGMA encoding = XXX" */
|
|
/* Only change the value of sqlite.enc if the database handle is not
|
|
** initialized. If the main database exists, the new sqlite.enc value
|
|
** will be overwritten when the schema is next loaded. If it does not
|
|
** already exists, it will be created to use the new encoding value.
|
|
*/
|
|
if(
|
|
!(DbHasProperty(db, 0, DB_SchemaLoaded)) ||
|
|
DbHasProperty(db, 0, DB_Empty)
|
|
){
|
|
for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
|
|
if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
|
|
ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
|
|
break;
|
|
}
|
|
}
|
|
if( !pEnc->zName ){
|
|
sqlite3ErrorMsg(pParse, "unsupported encoding: %s", zRight);
|
|
}
|
|
}
|
|
}
|
|
}else
|
|
#endif /* SQLITE_OMIT_UTF16 */
|
|
|
|
#ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
|
|
/*
|
|
** PRAGMA [database.]schema_version
|
|
** PRAGMA [database.]schema_version = <integer>
|
|
**
|
|
** PRAGMA [database.]user_version
|
|
** PRAGMA [database.]user_version = <integer>
|
|
**
|
|
** The pragma's schema_version and user_version are used to set or get
|
|
** the value of the schema-version and user-version, respectively. Both
|
|
** the schema-version and the user-version are 32-bit signed integers
|
|
** stored in the database header.
|
|
**
|
|
** The schema-cookie is usually only manipulated internally by SQLite. It
|
|
** is incremented by SQLite whenever the database schema is modified (by
|
|
** creating or dropping a table or index). The schema version is used by
|
|
** SQLite each time a query is executed to ensure that the internal cache
|
|
** of the schema used when compiling the SQL query matches the schema of
|
|
** the database against which the compiled query is actually executed.
|
|
** Subverting this mechanism by using "PRAGMA schema_version" to modify
|
|
** the schema-version is potentially dangerous and may lead to program
|
|
** crashes or database corruption. Use with caution!
|
|
**
|
|
** The user-version is not used internally by SQLite. It may be used by
|
|
** applications for any purpose.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "schema_version")==0
|
|
|| sqlite3StrICmp(zLeft, "user_version")==0
|
|
|| sqlite3StrICmp(zLeft, "freelist_count")==0
|
|
){
|
|
int iCookie; /* Cookie index. 0 for schema-cookie, 6 for user-cookie. */
|
|
sqlite3VdbeUsesBtree(v, iDb);
|
|
switch( zLeft[0] ){
|
|
case 's': case 'S':
|
|
iCookie = 0;
|
|
break;
|
|
case 'f': case 'F':
|
|
iCookie = 1;
|
|
iDb = (-1*(iDb+1));
|
|
assert(iDb<=0);
|
|
break;
|
|
default:
|
|
iCookie = 5;
|
|
break;
|
|
}
|
|
|
|
if( zRight && iDb>=0 ){
|
|
/* Write the specified cookie value */
|
|
static const VdbeOpList setCookie[] = {
|
|
{ OP_Transaction, 0, 1, 0}, /* 0 */
|
|
{ OP_Integer, 0, 1, 0}, /* 1 */
|
|
{ OP_SetCookie, 0, 0, 1}, /* 2 */
|
|
};
|
|
int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie);
|
|
sqlite3VdbeChangeP1(v, addr, iDb);
|
|
sqlite3VdbeChangeP1(v, addr+1, atoi(zRight));
|
|
sqlite3VdbeChangeP1(v, addr+2, iDb);
|
|
sqlite3VdbeChangeP2(v, addr+2, iCookie);
|
|
}else{
|
|
/* Read the specified cookie value */
|
|
static const VdbeOpList readCookie[] = {
|
|
{ OP_ReadCookie, 0, 1, 0}, /* 0 */
|
|
{ OP_ResultRow, 1, 1, 0}
|
|
};
|
|
int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie);
|
|
sqlite3VdbeChangeP1(v, addr, iDb);
|
|
sqlite3VdbeChangeP3(v, addr, iCookie);
|
|
sqlite3VdbeSetNumCols(v, 1);
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT);
|
|
}
|
|
}else
|
|
#endif /* SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS */
|
|
|
|
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
|
|
/*
|
|
** Report the current state of file logs for all databases
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "lock_status")==0 ){
|
|
static const char *const azLockName[] = {
|
|
"unlocked", "shared", "reserved", "pending", "exclusive"
|
|
};
|
|
int i;
|
|
sqlite3VdbeSetNumCols(v, 2);
|
|
pParse->nMem = 2;
|
|
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", SQLITE_STATIC);
|
|
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", SQLITE_STATIC);
|
|
for(i=0; i<db->nDb; i++){
|
|
Btree *pBt;
|
|
Pager *pPager;
|
|
const char *zState = "unknown";
|
|
int j;
|
|
if( db->aDb[i].zName==0 ) continue;
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, db->aDb[i].zName, P4_STATIC);
|
|
pBt = db->aDb[i].pBt;
|
|
if( pBt==0 || (pPager = sqlite3BtreePager(pBt))==0 ){
|
|
zState = "closed";
|
|
}else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0,
|
|
SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){
|
|
zState = azLockName[j];
|
|
}
|
|
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, zState, P4_STATIC);
|
|
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2);
|
|
}
|
|
|
|
}else
|
|
#endif
|
|
|
|
#ifdef SQLITE_SSE
|
|
/*
|
|
** Check to see if the sqlite_statements table exists. Create it
|
|
** if it does not.
|
|
*/
|
|
if( sqlite3StrICmp(zLeft, "create_sqlite_statement_table")==0 ){
|
|
extern int sqlite3CreateStatementsTable(Parse*);
|
|
sqlite3CreateStatementsTable(pParse);
|
|
}else
|
|
#endif
|
|
|
|
#if SQLITE_HAS_CODEC
|
|
if( sqlite3StrICmp(zLeft, "key")==0 && zRight ){
|
|
sqlite3_key(db, zRight, sqlite3Strlen30(zRight));
|
|
}else
|
|
if( sqlite3StrICmp(zLeft, "rekey")==0 && zRight ){
|
|
sqlite3_rekey(db, zRight, sqlite3Strlen30(zRight));
|
|
}else
|
|
if( zRight && (sqlite3StrICmp(zLeft, "hexkey")==0 ||
|
|
sqlite3StrICmp(zLeft, "hexrekey")==0) ){
|
|
int i, h1, h2;
|
|
char zKey[40];
|
|
for(i=0; (h1 = zRight[i])!=0 && (h2 = zRight[i+1])!=0; i+=2){
|
|
h1 += 9*(1&(h1>>6));
|
|
h2 += 9*(1&(h2>>6));
|
|
zKey[i/2] = (h2 & 0x0f) | ((h1 & 0xf)<<4);
|
|
}
|
|
if( (zLeft[3] & 0xf)==0xb ){
|
|
sqlite3_key(db, zKey, i/2);
|
|
}else{
|
|
sqlite3_rekey(db, zKey, i/2);
|
|
}
|
|
}else
|
|
#endif
|
|
#if SQLITE_HAS_CODEC || defined(SQLITE_ENABLE_CEROD)
|
|
if( sqlite3StrICmp(zLeft, "activate_extensions")==0 ){
|
|
#if SQLITE_HAS_CODEC
|
|
if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){
|
|
extern void sqlite3_activate_see(const char*);
|
|
sqlite3_activate_see(&zRight[4]);
|
|
}
|
|
#endif
|
|
#ifdef SQLITE_ENABLE_CEROD
|
|
if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){
|
|
extern void sqlite3_activate_cerod(const char*);
|
|
sqlite3_activate_cerod(&zRight[6]);
|
|
}
|
|
#endif
|
|
}else
|
|
#endif
|
|
|
|
|
|
{/* Empty ELSE clause */}
|
|
|
|
/* Code an OP_Expire at the end of each PRAGMA program to cause
|
|
** the VDBE implementing the pragma to expire. Most (all?) pragmas
|
|
** are only valid for a single execution.
|
|
*/
|
|
sqlite3VdbeAddOp2(v, OP_Expire, 1, 0);
|
|
|
|
/*
|
|
** Reset the safety level, in case the fullfsync flag or synchronous
|
|
** setting changed.
|
|
*/
|
|
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
|
|
if( db->autoCommit ){
|
|
sqlite3BtreeSetSafetyLevel(pDb->pBt, pDb->safety_level,
|
|
(db->flags&SQLITE_FullFSync)!=0);
|
|
}
|
|
#endif
|
|
pragma_out:
|
|
sqlite3DbFree(db, zLeft);
|
|
sqlite3DbFree(db, zRight);
|
|
}
|
|
|
|
#endif /* SQLITE_OMIT_PRAGMA || SQLITE_OMIT_PARSER */
|