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Overview
| Comment: | Fix a bug in the rollback validation logic (code that only runs during debugging). The problem was introduced by check-in (835). (CVS 849) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | b6ea0da76a27a4a67a3978c534058405 |
| User & Date: | drh 2003-01-25 15:43:22 |
Context
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2003-01-25
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| 16:32 | Version 2.7.6 (CVS 850) check-in: bdba796f user: drh tags: trunk | |
| 15:43 | Fix a bug in the rollback validation logic (code that only runs during debugging). The problem was introduced by check-in (835). (CVS 849) check-in: b6ea0da7 user: drh tags: trunk | |
| 14:34 | Remove an unused variable. (CVS 848) check-in: 18f4ffaa 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 1.70 2003/01/22 01:26:44 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 defined(SQLITE_TEST) && !defined(NDEBUG) /* Truncate the journal to the size it was at the conclusion of the ** last sqliteOsSync() call. This is really an error check. If the ** rollback still works, it means that the rollback would have also ** worked if it had occurred after an OS crash or unexpected power ** loss. */ if( pPager->syncJSize<sizeof(aJournalMagic)+sizeof(Pgno) ){ pPager->syncJSize = sizeof(aJournalMagic)+sizeof(Pgno); } TRACE2("TRUNCATE JOURNAL %lld\n", pPager->syncJSize); rc = sqliteOsTruncate(&pPager->jfd, pPager->syncJSize); if( rc ) return rc; #endif if( pPager->errMask!=0 && pPager->errMask!=PAGER_ERR_FULL ){ if( pPager->state>=SQLITE_WRITELOCK ){ pager_playback(pPager); } return pager_errcode(pPager); |
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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 1.71 2003/01/25 15:43:22 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 defined(SQLITE_TEST) && !defined(NDEBUG) /* Truncate the journal to the size it was at the conclusion of the ** last sqliteOsSync() call. This is really an error check. If the ** rollback still works, it means that the rollback would have also ** worked if it had occurred after an OS crash or unexpected power ** loss. */ if( !pPager->noSync ){ assert( !pPager->tempFile ); if( pPager->syncJSize<sizeof(aJournalMagic)+sizeof(Pgno) ){ pPager->syncJSize = sizeof(aJournalMagic)+sizeof(Pgno); } TRACE2("TRUNCATE JOURNAL %lld\n", pPager->syncJSize); rc = sqliteOsTruncate(&pPager->jfd, pPager->syncJSize); if( rc ) return rc; } #endif if( pPager->errMask!=0 && pPager->errMask!=PAGER_ERR_FULL ){ if( pPager->state>=SQLITE_WRITELOCK ){ pager_playback(pPager); } return pager_errcode(pPager); |