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Overview
| Comment: | Fix a buffer overrun in the atomic multifile commit logic of the pager. (CVS 1556) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 3b78ffe0b5dfa20e5c638d85ed400afda8a9f948 |
| User & Date: | drh 2004-06-10 00:51:44 |
Context
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2004-06-10
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| 01:08 | Tests in lock.test no conform to the new locking scheme. (CVS 1557) check-in: a60afd04 user: drh tags: trunk | |
| 00:51 | Fix a buffer overrun in the atomic multifile commit logic of the pager. (CVS 1556) check-in: 3b78ffe0 user: drh tags: trunk | |
| 00:29 | Check for schema updates if the parser fails to find a table. More locking test updates. (CVS 1555) check-in: a2228351 user: drh tags: trunk | |
Changes
Changes to src/pager.c.
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** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: pager.c,v 1.117 2004/06/09 20:03:09 drh Exp $ */ #include "os.h" /* Must be first to enable large file support */ #include "sqliteInt.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ if( rc ) goto end_playback; if( nMaster>0 ){ zMaster = sqliteMalloc(nMaster); if( !zMaster ){ rc = SQLITE_NOMEM; goto end_playback; } rc = sqlite3OsRead(&pPager->jfd, zMaster, pPager->nMaster); if( rc!=SQLITE_OK || (zMaster[0] && !sqlite3OsFileExists(zMaster)) ){ goto end_playback; } } /* Truncate the database file back to it's original size */ assert( pPager->origDbSize==0 || pPager->origDbSize==mxPg ); |
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** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: pager.c,v 1.118 2004/06/10 00:51:44 drh Exp $ */ #include "os.h" /* Must be first to enable large file support */ #include "sqliteInt.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ if( rc ) goto end_playback; if( nMaster>0 ){ zMaster = sqliteMalloc(nMaster); if( !zMaster ){ rc = SQLITE_NOMEM; goto end_playback; } rc = sqlite3OsRead(&pPager->jfd, zMaster, nMaster); if( rc!=SQLITE_OK || (zMaster[0] && !sqlite3OsFileExists(zMaster)) ){ goto end_playback; } } /* Truncate the database file back to it's original size */ assert( pPager->origDbSize==0 || pPager->origDbSize==mxPg ); |