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Overview
Comment:Propagate detected database corruption up through the call stack. (CVS 2279)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 2c54aba5ba781f4da1f14ed7a3986b6dc17728d7
User & Date: drh 2005-01-26 21:55:32
Context
2005-01-27
00:22
Have REINDEX handle missing collation sequences correctly. (CVS 2280) (check-in: 1c1904f4 user: danielk1977 tags: trunk)
2005-01-26
21:55
Propagate detected database corruption up through the call stack. (CVS 2279) (check-in: 2c54aba5 user: drh tags: trunk)
17:47
An optimization to sqlite3VdbeSerialType(). (CVS 2278) (check-in: db367738 user: drh tags: trunk)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/vdbe.c. 

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**
** Various scripts scan this source file in order to generate HTML
** documentation, headers files, or other derived files.  The formatting
** of the code in this file is, therefore, important.  See other comments
** in this file for details.  If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.446 2005/01/24 10:25:59 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*
................................................................................
    zRec = pRec->z;
    assert( pCnt>=p->aStack );
    assert( pCnt->flags & MEM_Int );
    nField = pCnt->i;
    pCrsr = 0;
  }else if( (pC = p->apCsr[p1])->pCursor!=0 ){
    /* The record is stored in a B-Tree */
    sqlite3VdbeCursorMoveto(pC);

    zRec = 0;
    pCrsr = pC->pCursor;
    if( pC->nullRow ){
      payloadSize = 0;
    }else if( pC->cacheValid ){
      payloadSize = pC->payloadSize;
      zRec = pC->aRow;
................................................................................
case OP_Delete: {
  int i = pOp->p1;
  Cursor *pC;
  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  if( pC->pCursor!=0 ){
    sqlite3VdbeCursorMoveto(pC);

    rc = sqlite3BtreeDelete(pC->pCursor);
    pC->nextRowidValid = 0;
    pC->cacheValid = 0;
  }
  if( pOp->p2 & OPFLAG_NCHANGE ) p->nChange++;
  break;
}
................................................................................
  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  if( pC->nullRow ){
    pTos->flags = MEM_Null;
  }else if( pC->pCursor!=0 ){
    BtCursor *pCrsr = pC->pCursor;
    sqlite3VdbeCursorMoveto(pC);

    if( pC->nullRow ){
      pTos->flags = MEM_Null;
      break;
    }else if( pC->keyAsData || pOp->opcode==OP_RowKey ){
      i64 n64;
      assert( !pC->intKey );
      sqlite3BtreeKeySize(pCrsr, &n64);
................................................................................
  int i = pOp->p1;
  Cursor *pC;
  i64 v;

  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  sqlite3VdbeCursorMoveto(pC);

  pTos++;
  if( pC->recnoIsValid ){
    v = pC->lastRecno;
  }else if( pC->pseudoTable ){
    v = keyToInt(pC->iKey);
  }else if( pC->nullRow || pC->pCursor==0 ){
    pTos->flags = MEM_Null;
................................................................................
  assert( !p->apCsr[i]->pseudoTable );
  pTos++;
  pTos->flags = MEM_Null;
  if( (pCrsr = (pC = p->apCsr[i])->pCursor)!=0 ){
    i64 amt;
    char *z;

    sqlite3VdbeCursorMoveto(pC);

    assert( pC->intKey==0 );
    sqlite3BtreeKeySize(pCrsr, &amt);
    if( amt<=0 ){
      rc = SQLITE_CORRUPT;
      goto abort_due_to_error;
    }
    if( amt>NBFS ){








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**
** Various scripts scan this source file in order to generate HTML
** documentation, headers files, or other derived files.  The formatting
** of the code in this file is, therefore, important.  See other comments
** in this file for details.  If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.447 2005/01/26 21:55:32 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*
................................................................................
    zRec = pRec->z;
    assert( pCnt>=p->aStack );
    assert( pCnt->flags & MEM_Int );
    nField = pCnt->i;
    pCrsr = 0;
  }else if( (pC = p->apCsr[p1])->pCursor!=0 ){
    /* The record is stored in a B-Tree */
    rc = sqlite3VdbeCursorMoveto(pC);
    if ( rc ) return rc;
    zRec = 0;
    pCrsr = pC->pCursor;
    if( pC->nullRow ){
      payloadSize = 0;
    }else if( pC->cacheValid ){
      payloadSize = pC->payloadSize;
      zRec = pC->aRow;
................................................................................
case OP_Delete: {
  int i = pOp->p1;
  Cursor *pC;
  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  if( pC->pCursor!=0 ){
    rc = sqlite3VdbeCursorMoveto(pC);
    if ( rc ) return rc;
    rc = sqlite3BtreeDelete(pC->pCursor);
    pC->nextRowidValid = 0;
    pC->cacheValid = 0;
  }
  if( pOp->p2 & OPFLAG_NCHANGE ) p->nChange++;
  break;
}
................................................................................
  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  if( pC->nullRow ){
    pTos->flags = MEM_Null;
  }else if( pC->pCursor!=0 ){
    BtCursor *pCrsr = pC->pCursor;
    rc = sqlite3VdbeCursorMoveto(pC);
    if ( rc ) return rc;
    if( pC->nullRow ){
      pTos->flags = MEM_Null;
      break;
    }else if( pC->keyAsData || pOp->opcode==OP_RowKey ){
      i64 n64;
      assert( !pC->intKey );
      sqlite3BtreeKeySize(pCrsr, &n64);
................................................................................
  int i = pOp->p1;
  Cursor *pC;
  i64 v;

  assert( i>=0 && i<p->nCursor );
  pC = p->apCsr[i];
  assert( pC!=0 );
  rc = sqlite3VdbeCursorMoveto(pC);
  if ( rc ) return rc;
  pTos++;
  if( pC->recnoIsValid ){
    v = pC->lastRecno;
  }else if( pC->pseudoTable ){
    v = keyToInt(pC->iKey);
  }else if( pC->nullRow || pC->pCursor==0 ){
    pTos->flags = MEM_Null;
................................................................................
  assert( !p->apCsr[i]->pseudoTable );
  pTos++;
  pTos->flags = MEM_Null;
  if( (pCrsr = (pC = p->apCsr[i])->pCursor)!=0 ){
    i64 amt;
    char *z;

    rc = sqlite3VdbeCursorMoveto(pC);
    if ( rc ) return rc;
    assert( pC->intKey==0 );
    sqlite3BtreeKeySize(pCrsr, &amt);
    if( amt<=0 ){
      rc = SQLITE_CORRUPT;
      goto abort_due_to_error;
    }
    if( amt>NBFS ){

Changes to src/vdbeaux.c. 

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/*
** If a MoveTo operation is pending on the given cursor, then do that
** MoveTo now.  Return an error code.  If no MoveTo is pending, this
** routine does nothing and returns SQLITE_OK.
*/
int sqlite3VdbeCursorMoveto(Cursor *p){
  if( p->deferredMoveto ){
    int res;
    extern int sqlite3_search_count;
    assert( p->intKey );
    if( p->intKey ){
      sqlite3BtreeMoveto(p->pCursor, 0, p->movetoTarget, &res);
    }else{
      sqlite3BtreeMoveto(p->pCursor,(char*)&p->movetoTarget,sizeof(i64),&res);

    }

    *p->pIncrKey = 0;
    p->lastRecno = keyToInt(p->movetoTarget);
    p->recnoIsValid = res==0;
    if( res<0 ){
      sqlite3BtreeNext(p->pCursor, &res);

    }
    sqlite3_search_count++;
    p->deferredMoveto = 0;
    p->cacheValid = 0;
  }
  return SQLITE_OK;
}








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/*
** If a MoveTo operation is pending on the given cursor, then do that
** MoveTo now.  Return an error code.  If no MoveTo is pending, this
** routine does nothing and returns SQLITE_OK.
*/
int sqlite3VdbeCursorMoveto(Cursor *p){
  if( p->deferredMoveto ){
    int res, rc;
    extern int sqlite3_search_count;
    assert( p->intKey );
    if( p->intKey ){
      rc = sqlite3BtreeMoveto(p->pCursor, 0, p->movetoTarget, &res);
    }else{
      rc = sqlite3BtreeMoveto(p->pCursor,(char*)&p->movetoTarget,
                              sizeof(i64),&res);
    }
    if( rc ) return rc;
    *p->pIncrKey = 0;
    p->lastRecno = keyToInt(p->movetoTarget);
    p->recnoIsValid = res==0;
    if( res<0 ){
      rc = sqlite3BtreeNext(p->pCursor, &res);
      if( rc ) return rc;
    }
    sqlite3_search_count++;
    p->deferredMoveto = 0;
    p->cacheValid = 0;
  }
  return SQLITE_OK;
}

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