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Overview
| Comment: | Fix a reference count problem following database corruption detection in the ptrmapPut() routine of btree.c. (CVS 6854) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
ec1e27e33b89e809a03e4140b351f6c8 |
| User & Date: | drh 2009-07-07 11:39:59 |
Context
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2009-07-07
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| 13:56 | If an error occurs in PagerBegin(), call pager_end_transaction() to reset the internal state of the pager object. (CVS 6855) (check-in: ea7ed166 user: danielk1977 tags: trunk) | |
| 11:39 | Fix a reference count problem following database corruption detection in the ptrmapPut() routine of btree.c. (CVS 6854) (check-in: ec1e27e3 user: drh tags: trunk) | |
| 02:44 | Simplifications to btree.c and vdbeaux.c in support of structural coverage testing. (CVS 6853) (check-in: fc2a40a9 user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.654 2009/07/07 02:44:07 drh Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ #include "btreeInt.h" ................................................................................ iPtrmap = PTRMAP_PAGENO(pBt, key); rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); if( rc!=SQLITE_OK ){ return rc; } offset = PTRMAP_PTROFFSET(iPtrmap, key); if( offset<0 ){ return SQLITE_CORRUPT_BKPT; } pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){ TRACE(("PTRMAP_UPDATE: %d->(%d,%d)\n", key, eType, parent)); rc = sqlite3PagerWrite(pDbPage); if( rc==SQLITE_OK ){ pPtrmap[offset] = eType; put4byte(&pPtrmap[offset+1], parent); } } sqlite3PagerUnref(pDbPage); return rc; } /* ** Read an entry from the pointer map. ** |
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.655 2009/07/07 11:39:59 drh Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ #include "btreeInt.h" ................................................................................ iPtrmap = PTRMAP_PAGENO(pBt, key); rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); if( rc!=SQLITE_OK ){ return rc; } offset = PTRMAP_PTROFFSET(iPtrmap, key); if( offset<0 ){ rc = SQLITE_CORRUPT_BKPT; goto ptrmap_exit; } pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){ TRACE(("PTRMAP_UPDATE: %d->(%d,%d)\n", key, eType, parent)); rc = sqlite3PagerWrite(pDbPage); if( rc==SQLITE_OK ){ pPtrmap[offset] = eType; put4byte(&pPtrmap[offset+1], parent); } } ptrmap_exit: sqlite3PagerUnref(pDbPage); return rc; } /* ** Read an entry from the pointer map. ** |