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Overview
| Comment: | Detect if two indexes of the same table share a common rootpage while parsing the schema, and throw an error immediately. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
f21c6f1343edc4ba68f9f8e68caac34d |
| User & Date: | drh 2019-01-30 18:33:33 |
Context
|
2019-01-30
| ||
| 18:47 | Add test case for the previous commit. (check-in: 197edb23 user: dan tags: trunk) | |
| 18:33 | Detect if two indexes of the same table share a common rootpage while parsing the schema, and throw an error immediately. (check-in: f21c6f13 user: drh tags: trunk) | |
| 16:58 | Fix an off-by-one error when parsing the names of indexes that do not have arguments in the index_usage utility. (check-in: dc794d8f user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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assert( p==pIndex ); /* Malloc must have failed */
sqlite3OomFault(db);
goto exit_create_index;
}
db->mDbFlags |= DBFLAG_SchemaChange;
if( pTblName!=0 ){
pIndex->tnum = db->init.newTnum;
}
}
/* If this is the initial CREATE INDEX statement (or CREATE TABLE if the
** index is an implied index for a UNIQUE or PRIMARY KEY constraint) then
** emit code to allocate the index rootpage on disk and make an entry for
** the index in the sqlite_master table and populate the index with
|
> > > > > |
3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 |
assert( p==pIndex ); /* Malloc must have failed */
sqlite3OomFault(db);
goto exit_create_index;
}
db->mDbFlags |= DBFLAG_SchemaChange;
if( pTblName!=0 ){
pIndex->tnum = db->init.newTnum;
if( sqlite3IndexHasDuplicateRootPage(pIndex) ){
sqlite3ErrorMsg(pParse, "invalid root page");
pParse->rc = SQLITE_CORRUPT_BKPT;
goto exit_create_index;
}
}
}
/* If this is the initial CREATE INDEX statement (or CREATE TABLE if the
** index is an implied index for a UNIQUE or PRIMARY KEY constraint) then
** emit code to allocate the index rootpage on disk and make an entry for
** the index in the sqlite_master table and populate the index with
|
Changes to src/prepare.c.
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if( zObj==0 ) zObj = "?";
z = sqlite3MPrintf(db, "malformed database schema (%s)", zObj);
if( zExtra && zExtra[0] ) z = sqlite3MPrintf(db, "%z - %s", z, zExtra);
*pData->pzErrMsg = z;
pData->rc = SQLITE_CORRUPT_BKPT;
}
}
/*
** This is the callback routine for the code that initializes the
** database. See sqlite3Init() below for additional information.
** This routine is also called from the OP_ParseSchema opcode of the VDBE.
**
** Each callback contains the following information:
................................................................................
** to do here is record the root page number for that index.
*/
Index *pIndex;
pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName);
if( pIndex==0
|| sqlite3GetInt32(argv[1],&pIndex->tnum)==0
|| pIndex->tnum<2
){
corruptSchema(pData, argv[0], pIndex?"invalid rootpage":"orphan index");
}
}
return 0;
}
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if( zObj==0 ) zObj = "?";
z = sqlite3MPrintf(db, "malformed database schema (%s)", zObj);
if( zExtra && zExtra[0] ) z = sqlite3MPrintf(db, "%z - %s", z, zExtra);
*pData->pzErrMsg = z;
pData->rc = SQLITE_CORRUPT_BKPT;
}
}
/*
** Check to see if any sibling index (another index on the same table)
** of pIndex has the same root page number, and if it does, return true.
** This would indicate a corrupt schema.
*/
int sqlite3IndexHasDuplicateRootPage(Index *pIndex){
Index *p;
for(p=pIndex->pTable->pIndex; p; p=p->pNext){
if( p->tnum==pIndex->tnum && p!=pIndex ) return 1;
}
return 0;
}
/*
** This is the callback routine for the code that initializes the
** database. See sqlite3Init() below for additional information.
** This routine is also called from the OP_ParseSchema opcode of the VDBE.
**
** Each callback contains the following information:
................................................................................
** to do here is record the root page number for that index.
*/
Index *pIndex;
pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName);
if( pIndex==0
|| sqlite3GetInt32(argv[1],&pIndex->tnum)==0
|| pIndex->tnum<2
|| sqlite3IndexHasDuplicateRootPage(pIndex)
){
corruptSchema(pData, argv[0], pIndex?"invalid rootpage":"orphan index");
}
}
return 0;
}
|
Changes to src/sqliteInt.h.
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ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); void sqlite3ExprListSetSortOrder(ExprList*,int); void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*); void sqlite3ExprListDelete(sqlite3*, ExprList*); u32 sqlite3ExprListFlags(const ExprList*); int sqlite3Init(sqlite3*, char**); int sqlite3InitCallback(void*, int, char**, char**); int sqlite3InitOne(sqlite3*, int, char**, u32); void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); #ifndef SQLITE_OMIT_VIRTUALTABLE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName); #endif |
> |
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ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
void sqlite3ExprListSetSortOrder(ExprList*,int);
void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
void sqlite3ExprListDelete(sqlite3*, ExprList*);
u32 sqlite3ExprListFlags(const ExprList*);
int sqlite3IndexHasDuplicateRootPage(Index*);
int sqlite3Init(sqlite3*, char**);
int sqlite3InitCallback(void*, int, char**, char**);
int sqlite3InitOne(sqlite3*, int, char**, u32);
void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
#ifndef SQLITE_OMIT_VIRTUALTABLE
Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName);
#endif
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