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Overview
| Comment: | Harden sqlite3session_delete() against trying to delete a session that is not currently on the session list. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | sessions |
| Files: | files | file ages | folders |
| SHA1: | 6c2d34df76fb7823f307c11a1135ab30674421a9 |
| User & Date: | drh 2016-02-13 14:45:56 |
Context
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2016-02-13
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| 15:08 | Fix another test problem in sessionfault.test. check-in: f6d1cf79 user: dan tags: sessions | |
| 14:45 | Harden sqlite3session_delete() against trying to delete a session that is not currently on the session list. check-in: 6c2d34df user: drh tags: sessions | |
| 14:39 | Fix a problem in sessionfault.test causing it to segfault following a test failure. This commit does not fix the actual test failure - just the subsequent segfault. check-in: 582b2ae7 user: dan tags: sessions | |
Changes
Changes to ext/session/sqlite3session.c.
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sqlite3_session *pHead; sqlite3_session **pp; /* Unlink the session from the linked list of sessions attached to the ** database handle. Hold the db mutex while doing so. */ sqlite3_mutex_enter(sqlite3_db_mutex(db)); pHead = (sqlite3_session*)sqlite3_preupdate_hook(db, 0, 0); for(pp=&pHead; (*pp)!=pSession; pp=&((*pp)->pNext)); *pp = (*pp)->pNext; if( pHead ) sqlite3_preupdate_hook(db, xPreUpdate, (void *)pHead); sqlite3_mutex_leave(sqlite3_db_mutex(db)); /* Delete all attached table objects. And the contents of their ** associated hash-tables. */ sessionDeleteTable(pSession->pTable); /* Free the session object itself. */ |
| > | | > > > |
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sqlite3_session *pHead; sqlite3_session **pp; /* Unlink the session from the linked list of sessions attached to the ** database handle. Hold the db mutex while doing so. */ sqlite3_mutex_enter(sqlite3_db_mutex(db)); pHead = (sqlite3_session*)sqlite3_preupdate_hook(db, 0, 0); for(pp=&pHead; ALWAYS((*pp)!=0); pp=&((*pp)->pNext)){ if( (*pp)==pSession ){ *pp = (*pp)->pNext; if( pHead ) sqlite3_preupdate_hook(db, xPreUpdate, (void*)pHead); break; } } sqlite3_mutex_leave(sqlite3_db_mutex(db)); /* Delete all attached table objects. And the contents of their ** associated hash-tables. */ sessionDeleteTable(pSession->pTable); /* Free the session object itself. */ |