/* ** Open a new connection to database zFilename. */ int lsm_open(lsm_db *pDb, const char *zFilename){ int rc; if( pDb->pDatabase ){ rc = LSM_MISUSE; }else{ char *zFull; /* Translate the possibly relative pathname supplied by the user into ** an absolute pathname. This is required because the supplied path ** is used (either directly or with "-log" appended to it) for more ** than one purpose - to open both the database and log files, and ** perhaps to unlink the log file during disconnection. An absolute ** path is required to ensure that the correct files are operated ** on even if the application changes the cwd. */ rc = getFullpathname(pDb->pEnv, zFilename, &zFull); assert( rc==LSM_OK || zFull==0 ); /* Connect to the database. */ if( rc==LSM_OK ){ rc = lsmDbDatabaseConnect(pDb, zFull); } if( pDb->bReadonly==0 ){ /* Configure the file-system connection with the page-size and block-size ** of this database. Even if the database file is zero bytes in size ** on disk, these values have been set in shared-memory by now, and so ** are guaranteed not to change during the lifetime of this connection. */ if( rc==LSM_OK && LSM_OK==(rc = lsmCheckpointLoad(pDb, 0)) ){ lsmFsSetPageSize(pDb->pFS, lsmCheckpointPgsz(pDb->aSnapshot)); lsmFsSetBlockSize(pDb->pFS, lsmCheckpointBlksz(pDb->aSnapshot)); } } lsmFree(pDb->pEnv, zFull); assertRwclientLockValue(pDb); } assert( pDb->bReadonly==0 || pDb->bReadonly==1 ); assert( rc!=LSM_OK || (pDb->pShmhdr==0)==(pDb->bReadonly==1) ); return rc; }
/* ** Open a new connection to database zFilename. */ int lsm_open(lsm_db *pDb, const char *zFilename){ int rc; if( pDb->pDatabase ){ rc = LSM_MISUSE; }else{ char *zFull; /* Translate the possibly relative pathname supplied by the user into ** an absolute pathname. This is required because the supplied path ** is used (either directly or with "-log" appended to it) for more ** than one purpose - to open both the database and log files, and ** perhaps to unlink the log file during disconnection. An absolute ** path is required to ensure that the correct files are operated ** on even if the application changes the cwd. */ rc = getFullpathname(pDb->pEnv, zFilename, &zFull); assert( rc==LSM_OK || zFull==0 ); /* Open the database file */ if( rc==LSM_OK ){ rc = lsmFsOpen(pDb, zFull); } /* Open the shared data handle. */ if( rc==LSM_OK ){ rc = lsmDbDatabaseFind(pDb, zFilename); } if( rc==LSM_OK ){ rc = dbRecoverIfRequired(pDb); } lsmFree(pDb->pEnv, zFull); } return rc; }