Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Fix a buffer overrun occuring when many overflow pages are recycled by a merge operation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
28340557fc88d445e0fe985f5dfabe40 |
| User & Date: | dan 2014-02-05 20:05:05 |
Context
|
2014-02-08
| ||
| 10:51 | Fixes so that tcl tests run with bt. check-in: b7f86e5617 user: dan tags: trunk | |
|
2014-02-05
| ||
| 20:05 | Fix a buffer overrun occuring when many overflow pages are recycled by a merge operation. check-in: 28340557fc user: dan tags: trunk | |
| 19:10 | Add extra tests and fixes. Make the block size and page size configurable. check-in: b43e752c98 user: dan tags: trunk | |
Changes
Changes to src/bt_main.c.
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
....
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
|
pgno = (p->nPgPerBlk * (p->iBlk-1) + 1) + p->nWrite;
p->nWrite++;
p->nAlloc++;
rc = sqlite4BtPagerRawWrite(p->db->pPager, pgno, p->aTrunk);
btPutU32(&p->aTrunk[4], pgno);
if( pPgno ) *pPgno = pgno;
return rc;
}
static int fiWriterFreeOverflow(FiWriter *p, FiCursor *pCsr){
const void *pKey; /* Buffer containing current key for pCsr */
................................................................................
){
u32 pgno = sqlite4BtPagePgno(pSub->apPage[pSub->nPg-1]);
int iCell = pSub->aiCell[pSub->nPg-1];
if( p->aTrunk==0 ){
rc = btNewBuffer(p->db, &p->aTrunk);
if( rc==SQLITE4_OK ) memset(p->aTrunk, 0, 8);
}else if( p->nOvflPerPage==p->nOvfl ){
rc = fiWriterFlushOvfl(p, 0);
}
if( rc==SQLITE4_OK ){
btPutU32(&p->aTrunk[8 + p->nOvfl*8], pgno);
btPutU32(&p->aTrunk[8 + p->nOvfl*8 + 4], iCell);
p->nOvfl++;
|
>
>
|
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
....
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
|
pgno = (p->nPgPerBlk * (p->iBlk-1) + 1) + p->nWrite; p->nWrite++; p->nAlloc++; rc = sqlite4BtPagerRawWrite(p->db->pPager, pgno, p->aTrunk); btPutU32(&p->aTrunk[4], pgno); if( pPgno ) *pPgno = pgno; p->nOvfl = 0; return rc; } static int fiWriterFreeOverflow(FiWriter *p, FiCursor *pCsr){ const void *pKey; /* Buffer containing current key for pCsr */ ................................................................................ ){ u32 pgno = sqlite4BtPagePgno(pSub->apPage[pSub->nPg-1]); int iCell = pSub->aiCell[pSub->nPg-1]; if( p->aTrunk==0 ){ rc = btNewBuffer(p->db, &p->aTrunk); if( rc==SQLITE4_OK ) memset(p->aTrunk, 0, 8); assert( p->nOvfl==0 ); }else if( p->nOvflPerPage==p->nOvfl ){ rc = fiWriterFlushOvfl(p, 0); } if( rc==SQLITE4_OK ){ btPutU32(&p->aTrunk[8 + p->nOvfl*8], pgno); btPutU32(&p->aTrunk[8 + p->nOvfl*8 + 4], iCell); p->nOvfl++; |