/*{
** Name: dmr_unfix - Unfix pages.
**
** INTERNAL DMF call format: status = dmr_unfix(&dmr_cb);
**
** EXTERNAL call format: status = dmf_call(DMR_UNFIX,&dmr_cb);
**
** Description:
** This function unfixes any still-fixed pages in the
** caller's DMR_CB->DMP_RCB.
**
** It is typically used, for example, when crossing a
** partition boundary when doing a table scan.
**
** It lets the caller leave the table open but without any
** of its pages fixed in cache.
**
** Unless the partition's table is either closed or
** unfixed, the pages remain fixed in cache and when
** "lots" of partitions are involved in a query, the
** cache can quickly become saturated.
**
** Inputs:
** dmr_cb
** .type Must be set to DMR_RECORD_CB.
** .length Must be at least
** sizeof(DMR_RECORD_CB) bytes.
** .dmr_access_id Record access identifer returned
** from DMT_OPEN that identifies a
** table.
**
** Outputs:
** dmr_cb
** .error.err_code One of the following error numbers.
** E_DM0000_OK
** E_DM002A_BAD_PARAMETER
** E_DM019A_ERROR_UNFIXING_PAGES
**
** Returns:
** E_DB_OK Function completed normally.
** E_DB_WARN Function completed normally with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_ERROR Function completed abnormally
** with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_FATAL Function completed with a fatal
** error which must be handled
** immediately. The fatal status is in
** dmr_cb.err_code.
** History:
** 09-Apr-2004 (jenjo02)
** Invented for partitioning.
** 04-jan-2005 (stial01)
** Set RCB_CSRR_LOCK so that locks can get released (b113231)
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: No CSRR_LOCK when crow_locking().
** 03-Mar-2010 (jonj)
** SIR 121619 MVCC, blob support:
** Set rcb_dmr_opcode here; dmpe bypasses dmf_call,
** which used to set it.
*/
DB_STATUS
dmr_unfix(
DMR_CB *dmr_cb)
{
DMR_CB *dmr = dmr_cb;
DMP_RCB *rcb;
DB_STATUS status;
i4 error;
CLRDBERR(&dmr->error);
if ( (rcb = (DMP_RCB *)dmr->dmr_access_id) &&
(dm0m_check((DM_OBJECT *)rcb, (i4)RCB_CB) == E_DB_OK) )
{
rcb->rcb_dmr_opcode = DMR_UNFIX;
/* Unfix any pages, if any */
if ( !crow_locking(rcb) &&
(rcb->rcb_iso_level == RCB_CURSOR_STABILITY ||
rcb->rcb_iso_level == RCB_REPEATABLE_READ) )
{
rcb->rcb_state |= RCB_CSRR_LOCK;
}
status = dm2r_unfix_pages(rcb, &dmr->error);
}
else
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)0, (i4)0, (i4 *)0, &error, 1,
sizeof("record")-1, "record");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
status = E_DB_ERROR;
}
if ( status )
{
/* This is pretty bad; abort the transaction */
rcb->rcb_xcb_ptr->xcb_state |= XCB_TRANABORT;
if (dmr->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmr->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM904F_ERROR_UNFIXING_PAGES, NULL, ULE_LOG, NULL,
(char * )NULL, 0L, (i4 *)NULL, &error, 3,
sizeof(DB_DB_NAME), &rcb->rcb_tcb_ptr->tcb_dcb_ptr->dcb_name,
sizeof(DB_OWN_NAME), &rcb->rcb_tcb_ptr->tcb_rel.relowner,
sizeof(DB_TAB_NAME), &rcb->rcb_tcb_ptr->tcb_rel.relid
);
SETDBERR(&dmr->error, 0, E_DM019A_ERROR_UNFIXING_PAGES);
}
}
return (status);
}
/*{
** Name: dmve_undo - Apply undo recovey for given log record.
**
** Description:
**
** Inputs:
** dmve_cb
** .dmve_log_rec The log record of the btree delete operation
** .dmve_action Should be DMVE_DO, DMVE_REDO, or DMVE_UNDO.
** .dmve_lg_addr The log address of the log record.
** .dmve_dcb_ptr Pointer to DCB.
** .dmve_tran_id The physical transaction id.
** .dmve_lk_id The transaction lock list id.
** .dmve_log_id The logging system database id.
** .dmve_db_lockmode The lockmode of the database. Should be
** DM2T_X or DM2T_S.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
**
** Returns:
** E_DB_OK
** E_DB_ERROR
**
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 14-dec-1992 (rogerk)
** Written for 6.5 recovery.
** 23-aug-93 (jnash)
** Add E_DM967A_DMVE_UNDO error msg to provide LSN after failure.
** 18-oct-93 (jnash)
** Fix typo in E_DM967A_DMVE_UNDO error msg.
** 18-oct-93 (jrb)
** Added DM0LEXTALTER handing for MLSorts.
** 14-Nov-2008 (jonj)
** SIR 120874: Properly initialize dmve_error, use new form uleFormat.
** 17-Nov-2008 (jonj)
** SIR 120874: Use dmve_logfull, not dmve_error.err_code, to preserve
** and return E_DM9070_LOG_LOGFULL for Bug 56702.
** 23-Feb-2009 (hanal04) Bug 121652
** Added DM0LUFMAP case to deal with FMAP updates needed for an
** extend operation where a new FMAP did not reside in the last
** FMAP or new FMAP itself.
*/
DB_STATUS
dmve_undo(
DMVE_CB *dmve)
{
DM0L_HEADER *record = (DM0L_HEADER *) dmve->dmve_log_rec;
DB_STATUS status = E_DB_OK;
i4 error;
CLRDBERR(&dmve->dmve_error);
DMVE_CLEAR_TABINFO_MACRO(dmve);
dmve->dmve_logfull = 0;
/*
** Skip records not needed for UNDO processing:
**
** - Before Images logged for Online Backup.
** - CLR records.
*/
if (record->flags & (DM0L_CLR | DM0L_DUMP))
return (E_DB_OK);
/*
** Process record by type.
*/
switch (record->type)
{
case DM0LBI:
status = dmve_bipage(dmve);
break;
case DM0LPUT:
status = dmve_put(dmve);
break;
case DM0LDEL:
status = dmve_del(dmve);
break;
case DM0LREP:
status = dmve_rep(dmve);
break;
case DM0LASSOC:
status = dmve_assoc(dmve);
break;
case DM0LALLOC:
status = dmve_alloc(dmve);
break;
case DM0LDEALLOC:
status = dmve_dealloc(dmve);
break;
case DM0LEXTEND:
status = dmve_extend(dmve);
break;
case DM0LFRENAME:
status = dmve_frename(dmve);
break;
case DM0LMODIFY:
status = dmve_modify(dmve);
break;
case DM0LFCREATE:
status = dmve_fcreate(dmve);
break;
case DM0LSM0CLOSEPURGE:
status = dmve_sm0_closepurge(dmve);
break;
case DM0LSM1RENAME:
status = dmve_sm1_rename(dmve);
break;
case DM0LSM2CONFIG:
status = dmve_sm2_config(dmve);
break;
case DM0LLOCATION:
status = dmve_location(dmve);
break;
case DM0LEXTALTER:
status = dmve_ext_alter(dmve);
break;
case DM0LCREATE:
status = dmve_create(dmve);
break;
case DM0LINDEX:
status = dmve_index(dmve);
break;
case DM0LRELOCATE:
status = dmve_relocate(dmve);
break;
case DM0LDESTROY:
status = dmve_destroy(dmve);
break;
case DM0LALTER:
status = dmve_alter(dmve);
break;
case DM0LLOAD:
status = dmve_load(dmve);
break;
case DM0LCRDB:
status = dmve_crdb(dmve);
break;
case DM0LDMU:
status = dmve_dmu(dmve);
break;
case DM0LOVFL:
status = dmve_ovfl(dmve);
break;
case DM0LNOFULL:
status = dmve_nofull(dmve);
break;
case DM0LFMAP:
status = dmve_fmap(dmve);
break;
case DM0LUFMAP:
status = dmve_ufmap(dmve);
break;
case DM0LBTPUT:
status = dmve_btput(dmve);
break;
case DM0LBTDEL:
status = dmve_btdel(dmve);
break;
case DM0LBTSPLIT:
status = dmve_btsplit(dmve);
break;
case DM0LBTOVFL:
status = dmve_btovfl(dmve);
break;
case DM0LBTFREE:
status = dmve_btfree(dmve);
break;
case DM0LBTUPDOVFL:
status = dmve_btupdovfl(dmve);
break;
case DM0LRTPUT:
status = dmve_rtput(dmve);
break;
case DM0LRTDEL:
status = dmve_rtdel(dmve);
break;
case DM0LRTREP:
status = dmve_rtrep(dmve);
break;
case DM0LDISASSOC:
status = dmve_disassoc(dmve);
break;
case DM0LDELLOCATION:
status = dmve_del_location(dmve);
break;
default:
/*
** Log record type that has no associated UNDO action.
*/
break;
}
if (status != E_DB_OK)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM967A_DMVE_UNDO, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 2,
0, record->lsn.lsn_high, 0, record->lsn.lsn_low);
SETDBERR(&dmve->dmve_error, 0, E_DM9639_DMVE_UNDO);
}
return(status);
}
/*{
** Name: dmve_rtrep - The recovery of a rtree replace key operation.
**
** Description:
** This function is used to do, redo and undo a replace key
** operation to a rtree index/leaf page. This function replaces
** the old or new value of the key in the index depending on the recovery mode.
**
** Inputs:
** dmve_cb
** .dmve_log_rec The log record of the system catalogs put
** operation.
** .dmve_action Should be DMVE_DO, DMVE_REDO, or DMVE_UNDO.
** .dmve_dcb_ptr Pointer to DCB.
** .dmve_tran_id The physical transaction id.
** .dmve_lk_id The transaction lock list id.
** .dmve_log_id The logging system database id.
** .dmve_db_lockmode The lockmode of the database. Should be
** DM2T_X or DM2T_S.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** E_DB_FATAL Operation was partially completed,
** the transaction must be aborted.
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 19-sep-1996 (shero03)
** Created from dmvebtpt.c
** 22-nov-96 (stial01,dilma04)
** Row Locking Project
** Add lock_type argument to dm0p_lock_page and dm0p_unlock_page
** 14-may-97 (dilma04)
** Cursor Stability Project:
** Add lock_id argument to dm0p_lock_page and dm0p_unlock_page.
** 19-Jun-2002 (horda03) Bug 108074
** If the table is locked exclusively, then indicate that SCONCUR
** pages don't need to be flushed immediately.
** 23-feb-2004 (thaju02) Bug 111470 INGSRV2635
** For rollforwarddb -b option, do not compare the LSN's on the
** page to that of the log record.
** 01-Dec-2004 (jenjo02)
** Pass fix_action to dmve_rtadjust_mbrs for bug 108074.
** 01-Dec-2006 (kiria01) b117225
** Initialise the lockid parameters that will be passed to LKrequest
** to avoid random implicit lock conversions.
** 17-Apr-2008 (kibro01) b120276
** Initialise ADF_CB structure
*/
DB_STATUS
dmve_rtrep(
DMVE_CB *dmve)
{
DM0L_RTREP *log_rec = (DM0L_RTREP *)dmve->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->rtr_header.lsn;
DMP_DCB *dcb = dmve->dmve_dcb_ptr;
ADF_CB adf_scb;
DMP_TABLE_IO *tbio = NULL;
DMPP_PAGE *page = NULL;
DB_STATUS status = E_DB_OK;
DB_STATUS tmp_status;
DMPP_ACC_PLV *loc_plv;
DMPP_ACC_KLV loc_klv;
LK_LKID lockid;
LK_LKID page_lockid;
DM_TID leaf_bid;
DM_TID *stack;
i4 stack_level;
i4 lock_action;
i4 grant_mode;
i4 recovery_action;
i4 error;
i4 loc_error;
i4 page_type = log_rec->rtr_pg_type;
bool physical_page_lock = FALSE;
bool undo_check_done = FALSE;
i4 fix_action = 0;
DB_ERROR local_dberr;
DMP_PINFO *pinfo = NULL;
CLRDBERR(&dmve->dmve_error);
DMVE_CLEAR_TABINFO_MACRO(dmve);
MEfill(sizeof(LK_LKID), 0, &lockid);
MEfill(sizeof(LK_LKID), 0, &page_lockid);
MEfill(sizeof(ADF_CB),0,(PTR)&adf_scb);
/*
** Store BID of insert into a local variable. The insert BID may
** be modified in undo recovery by the dmve_btunto_check routine.
*/
leaf_bid = log_rec->rtr_bid;
for (;;)
{
/* Consistency Check: check for illegal log records */
if (log_rec->rtr_header.type != DM0LRTREP)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
break;
}
/*
** If recovery is being bypassed on the entire table then no recovery
** needs to be done.
*/
if ((dmve->dmve_action == DMVE_UNDO) &&
(dmve_location_check(dmve, (i4)log_rec->rtr_cnf_loc_id) == FALSE))
{
uleFormat(NULL, E_DM9668_TABLE_NOT_RECOVERED, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&loc_error, 2, 0, log_rec->rtr_tbl_id.db_tab_base,
0, log_rec->rtr_tbl_id.db_tab_index);
SETDBERR(&dmve->dmve_error, 0, E_DM9667_NOPARTIAL_RECOVERY);
break;
}
/*
** Get handle to a tableio control block with which to read
** and write pages needed during recovery.
**
** Warning return indicates that no tableio control block was
** built because no recovery is needed on any of the locations
** described in this log record. Note that check above prevents
** this case from occurring during UNDO recovery.
*/
status = dmve_fix_tabio(dmve, &log_rec->rtr_tbl_id, &tbio);
if (status == E_DB_WARN &&
dmve->dmve_error.err_code == W_DM9660_DMVE_TABLE_OFFLINE)
{
CLRDBERR(&dmve->dmve_error);
return (E_DB_OK);
}
if (status != E_DB_OK)
break;
/*
** Get page accessors for page recovery actions.
*/
dm1c_get_plv(page_type, &loc_plv);
adf_scb.adf_errcb.ad_ebuflen = 0;
adf_scb.adf_errcb.ad_errmsgp = 0;
adf_scb.adf_maxstring = DB_MAXSTRING;
dm1c_getklv(&adf_scb,
log_rec->rtr_obj_dt_id,
&loc_klv);
/*
** Get required Table/Page locks before we can write the page.
**
** Some Ingres pages are locked only temporarily while they are
** updated and then released immediately after the update. The
** instances of such page types that are recovered through this
** routine are system catalog pages.
**
** Except for these system catalog pages, we expect that any page
* which requires recovery here has already been locked by the
** original transaction and that the following lock requests will
** not block.
**
** Note that if the database is locked exclusively, or if an X table
** lock is granted then no page lock is requried.
*/
if ((dcb->dcb_status & DCB_S_EXCLUSIVE) == 0)
{
/*
** Request IX lock in preparation of requesting an X page lock
** below. If the transaction already holds an exclusive table
** lock, then an X lock will be granted. In this case we can
** bypass the page lock request.
*/
status = dm2t_lock_table(dcb, &log_rec->rtr_tbl_id, DM2T_IX,
dmve->dmve_lk_id, (i4)0, &grant_mode, &lockid, &dmve->dmve_error);
if (status != E_DB_OK)
break;
if (grant_mode != DM2T_X)
{
/*
** Page lock required. If this is a system catalog page
** or a non-leaf index page then we need to request a
** physical lock (and release it later).
*/
lock_action = LK_LOGICAL;
if (log_rec->rtr_header.flags & DM0L_PHYS_LOCK)
lock_action = LK_PHYSICAL;
status = dm0p_lock_page(dmve->dmve_lk_id, dcb,
&log_rec->rtr_tbl_id, leaf_bid.tid_tid.tid_page,
LK_PAGE, LK_X, lock_action, (i4)0, tbio->tbio_relid,
tbio->tbio_relowner, &dmve->dmve_tran_id, &page_lockid,
(i4 *)NULL, (LK_VALUE *)NULL, &dmve->dmve_error);
if (status != E_DB_OK)
break;
if (lock_action == LK_PHYSICAL)
physical_page_lock = TRUE;
}
else
fix_action |= DM0P_TABLE_LOCKED_X;
}
/*
** Fix the page we need to recover in cache for write.
*/
status = dmve_cachefix_page(dmve, log_lsn,
tbio, leaf_bid.tid_tid.tid_page,
fix_action, loc_plv,
&pinfo);
if (status != E_DB_OK)
break;
page = pinfo->page;
/*
** Dump debug trace info about pages if such tracing is configured.
*/
if (DMZ_ASY_MACRO(15))
dmve_trace_page_info(log_rec->rtr_pg_type, log_rec->rtr_page_size,
page, loc_plv, "Page");
/*
** Compare the LSN on the page with that of the log record
** to determine what recovery will be needed.
**
** - During Forward processing, if the page's LSN is greater than
** the log record then no recovery is needed.
**
** - During Backward processing, it is an error for a page's LSN
** to be less than the log record LSN.
**
** - Currently, during rollforward processing it is unexpected
** to find that a recovery operation need not be applied because
** of the page's LSN. This is because rollforward must always
** begin from a checkpoint that is previous to any journal record
** begin applied. In the future this requirement may change and
** Rollforward will use the same expectations as Redo.
*/
switch (dmve->dmve_action)
{
case DMVE_DO:
case DMVE_REDO:
if (LSN_GTE(
DM1B_VPT_ADDR_PAGE_LOG_ADDR_MACRO(page_type, page),
log_lsn) && ((dmve->dmve_flags & DMVE_ROLLDB_BOPT) == 0))
{
if (dmve->dmve_action == DMVE_DO)
{
uleFormat(NULL, E_DM9665_PAGE_OUT_OF_DATE, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&loc_error, 8,
sizeof(DB_TAB_NAME), tbio->tbio_relid->db_tab_name,
sizeof(DB_OWN_NAME), tbio->tbio_relowner->db_own_name,
0, DM1B_VPT_GET_PAGE_PAGE_MACRO(page_type, page),
0, DM1B_VPT_GET_PAGE_STAT_MACRO(page_type, page),
0, DM1B_VPT_GET_LOG_ADDR_HIGH_MACRO(page_type, page),
0, DM1B_VPT_GET_LOG_ADDR_LOW_MACRO(page_type, page),
0, log_lsn->lsn_high, 0, log_lsn->lsn_low);
}
page = NULL;
}
break;
case DMVE_UNDO:
if (LSN_LT(
DM1B_VPT_ADDR_PAGE_LOG_ADDR_MACRO(page_type, page),
log_lsn))
{
uleFormat(NULL, E_DM9665_PAGE_OUT_OF_DATE, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&loc_error, 8,
sizeof(DB_TAB_NAME), tbio->tbio_relid->db_tab_name,
sizeof(DB_OWN_NAME), tbio->tbio_relowner->db_own_name,
0, DM1B_VPT_GET_PAGE_PAGE_MACRO(page_type, page),
0, DM1B_VPT_GET_PAGE_STAT_MACRO(page_type, page),
0, DM1B_VPT_GET_LOG_ADDR_HIGH_MACRO(page_type, page),
0, DM1B_VPT_GET_LOG_ADDR_LOW_MACRO(page_type, page),
0, log_lsn->lsn_high, 0, log_lsn->lsn_low);
SETDBERR(&dmve->dmve_error, 0, E_DM9666_PAGE_LSN_MISMATCH);
status = E_DB_ERROR;
}
break;
}
if (status != E_DB_OK)
break;
/*
** Call appropriate recovery action depending on the recovery type
** and record flags. CLR actions are always executed as an UNDO
** operation.
*/
if (page)
{
recovery_action = dmve->dmve_action;
if (log_rec->rtr_header.flags & DM0L_CLR)
recovery_action = DMVE_UNDO;
status = dmv_rertree_rep(dmve, tbio, pinfo, &leaf_bid, log_rec,
loc_plv, recovery_action);
if (status != E_DB_OK)
break;
/*
** Adjust the tree from the leaf to the root witih the new MBR and
** LHV. As long as the parent's MBR or LHV changes, keep going up
** the tree until you reach the root. Beware that a root split may
** have occured.
*/
stack = (DM_TID*) (((char *)log_rec) + sizeof(*log_rec));
stack_level = log_rec->rtr_stack_size / sizeof(DM_TID);
status = dmve_rtadjust_mbrs(dmve, &adf_scb, tbio,
log_rec->rtr_tbl_id,
stack, stack_level,
page_type,
log_rec->rtr_page_size,
log_rec->rtr_hilbertsize,
log_rec->rtr_nkey_size,
log_rec->rtr_cmp_type,
pinfo, loc_plv, &loc_klv,
fix_action);
if (status != E_DB_OK)
break;
} /* good page */
break;
}
if ((status != E_DB_OK) && (dmve->dmve_error.err_code))
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
}
/*
** Unfix the updated page. No need to force it to disk - it
** will be tossed out through normal cache protocols if Fast
** Commit or at the end of the abort if non Fast Commit.
*/
if (pinfo && pinfo->page)
{
tmp_status = dm0p_uncache_fix(tbio, DM0P_UNFIX, dmve->dmve_lk_id,
dmve->dmve_log_id, &dmve->dmve_tran_id, pinfo, &local_dberr);
if (tmp_status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &loc_error, 0);
if (tmp_status > status)
status = tmp_status;
}
}
/*
** If a short term physical lock was acquired on the page
** then release it.
*/
if (physical_page_lock)
{
tmp_status = dm0p_unlock_page(dmve->dmve_lk_id, dcb,
&log_rec->rtr_tbl_id, leaf_bid.tid_tid.tid_page, LK_PAGE,
tbio->tbio_relid, &dmve->dmve_tran_id, &page_lockid,
(LK_VALUE *)NULL, &local_dberr);
if (tmp_status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &loc_error, 0);
if (tmp_status > status)
status = tmp_status;
}
}
/*
** Release our handle to the table control block.
*/
if (tbio)
{
tmp_status = dmve_unfix_tabio(dmve, &tbio, 0);
if (tmp_status > status)
status = tmp_status;
}
if (status != E_DB_OK)
SETDBERR(&dmve->dmve_error, 0, E_DM964E_DMVE_BTREE_PUT);
return(status);
}
/*{
** Name: scd_add_datatypes - Add new datatypes, functions, and operators
**
** Description:
** This routine adds new datatypes, functions, and/or operators to the DBMS
** server. It does this by
** 1) Getting the ADD_DEFINITION block from IIudadt_register
** 2) Ask ADF for the amount of space required to add these new options
** 3) Allocate that space, and
** 4) Add the new options to the system.
**
** Failures are logged but not returned. The system currently ignores
** failures in finding new objects.
**
** Inputs:
** scb Session control block to use. 0 if not
** available.
** adf_svcb Addr of old server control block. NOTE:
** IT IS ASSUMED THAT THIS MEMORY IS
** SCU_MALLOC'D MEMORY. IT WILL BE
** DEALLOCATED IF THE ROUTINE IS
** SUCCESSFUL AND DEALLOCATION IS
** INDICATED.
** adf_size Size of old server control block.
** deallocate_flag Indicates whether the old memory should
** be deallocated. The deallocate flag, if
** set, contains the facility id
** (DB_??F_ID) of the facility to which the
** memory is and was charged (which
** allocated it...) See note below.
** error Addr of error block to fill in.
** new_svcb Addr**2 of new server block. This
** routine, if successful will place a
** pointer to the new adf server control
** block here.
** new_size Pointer to i4 to be filled with number
** of pages used by new_svcb. Can be zero
** if caller is not interested.
**
** Outputs:
** *error Filled with error if appropos
** *new_svcb Filled with pointer to new adf server
** control block. This field is always
** set. If no change is necessary, then
** this field is set to the value of
** adf_svcb.
** *new_size Filled with page count if non-zero.
**
** Returns:
** DB_STATUS
** Exceptions:
** none
**
** Side Effects:
** Sc_main_cb->sc_{major,minor}_adf are set to reflect the user adt major
** and minor id's. These are used later to check (sca_compatible())
** whether the user defined ADT image is compatible with the remainder of
** the running INGRES installation.
**
** ADF is updated (assuming correctness) to run with new user defined
** datatypes.
**
** If so indicated (by deallocate_flag being non-zero), the old pages are
** deallocated.
**
** History:
** 31-Jan-1989 (fred)
** Created.
** 22-Mar-1989 (fred)
** Added capability to scan IIDBDB for datatypes.
** 19-Apr-1989 (fred)
** Removed IIDBDB stuff. All information now determined by function
** calls to the user. Added support for returning major/minor id for
** user defined structure.
** 22-jun-89 (jrb)
** Added check to ensure site is licensed to add dts/ops/funcs.
** 09-oct-90 (ralph)
** 6.3->6.5 merge:
** 29-mar-90 (alan)
** Don't require CI_USER_ADT authorization if RMS Gateway.
** 2-Jul-1993 (daveb)
** remove unused variable adf_cb.
** 2-Jul-1993 (daveb)
** prototyped.
** 6-Jul-1993 (fred)
** Added more user callable functions to the callback
** structure.
** 26-Jul-1993 (fred)
** Fixed up ADD_CALLBACKS initialization to be type correct.
** Problem in mechanism for some prototypes due to differences
** header inclusions...
** 28-aug-1993 (stevet)
** Added support for INGRES class objects. The adu_agument()
** are call twice now, onec for class objects and once for
** UDT.
** 10-nov-1993 (stevet)
** deallocate memory the second time not working when loading class
** library and udt together.
** 03-Nov-2010 (jonj) SIR 124685 Prototype Cleanup
** Prototyped, SCD_SCB *scb now void *scbp - called from DMF.
[@history_template@]...
*/
DB_STATUS
sca_add_datatypes(void *scbp,
PTR adf_svcb,
i4 adf_size,
i4 deallocate_flag,
DB_ERROR *error,
PTR *new_svcb,
i4 *new_size )
{
SCD_SCB *scb = (SCD_SCB*)scbp;
ADD_DEFINITION *add_block;
PTR new_adf_block = (PTR) 0;
PTR old_adf_block = (PTR) 0;
DB_STATUS status;
DB_STATUS int_status;
i4 old_size;
i4 cur_size;
i4 size;
SCF_CB scf_cb;
i4 l_ustring;
i4 i;
char *ustring;
/*
** This structure is made static to protect against
** users who keep the pointer to it. They are told not
** to, but...
*/
static ADD_CALLBACKS callbacks = { ADD_T_V2,
sca_trace,
adu_ome_error,
(ADD_LO_HANDLER *)
adu_peripheral,
(ADD_INIT_FILTER *)
adu_0lo_setup_workspace,
(ADD_LO_FILTER *)
adu_lo_filter};
status = E_DB_OK;
CLRDBERR(error);
*new_svcb = adf_svcb; /* Start out with no change */
old_size = adf_size;
old_adf_block = adf_svcb;
Sc_main_cb->sc_major_adf = ADD_INGRES_ORIGINAL;
/* Loop 2 time so that we are load class obj as well as udt */
for ( i = 0; i < 2; i++)
{
add_block = (ADD_DEFINITION *) 0;
if( i)
{
status = IIudadt_register( &add_block, &callbacks);
}
else
{
status = IIclsadt_register( &add_block, &callbacks);
}
if (status)
{
SETDBERR(error, 0, E_SC026A_SCA_REGISTER_ERROR);
status = E_DB_ERROR;
break;
}
if (!add_block)
{
/* No new datatypes for this register, try next */
continue;
}
if ((add_block->add_risk_consistency == ADD_INCONSISTENT) &&
(Sc_main_cb->sc_capabilities & (SC_INGRES_SERVER | SC_STAR_SERVER)))
{
sc0ePut(NULL, E_SC0263_SCA_RISK_CONSISTENCY, NULL, 0);
}
if (add_block->add_major_id <= 0)
{
sc0ePut(error, E_SC0264_SCA_ILLEGAL_MAJOR, NULL, 1,
sizeof(add_block->add_major_id),
&add_block->add_major_id);
break;
}
/* Now, figure out the size necessary for the new ADF block */
size = adg_sz_augment(add_block, error);
if (error->err_code)
break;
scf_cb.scf_type = SCF_CB_TYPE;
scf_cb.scf_length = sizeof(SCF_CB);
scf_cb.scf_session = DB_NOSESSION;
scf_cb.scf_facility = (deallocate_flag ? deallocate_flag : DB_SCF_ID);
scf_cb.scf_scm.scm_functions = 0;
scf_cb.scf_scm.scm_in_pages = ((size + SCU_MPAGESIZE - 1)
& ~(SCU_MPAGESIZE - 1)) / SCU_MPAGESIZE;
status = scf_call(SCU_MALLOC, &scf_cb);
if (status != OK)
{
*error = scf_cb.scf_error;
break;
}
new_adf_block = (PTR) scf_cb.scf_scm.scm_addr;
if ( (add_block->add_l_ustring && !add_block->add_ustring)
|| (!add_block->add_l_ustring && add_block->add_ustring))
{
/* This is an error -- note error in block */
l_ustring = STlength(ustring = "*** INVALID USER STRING or LENGTH ***");
}
else
{
l_ustring = add_block->add_l_ustring;
ustring = add_block->add_ustring;
}
if (Sc_main_cb->sc_capabilities & (SC_INGRES_SERVER | SC_STAR_SERVER))
{
sc0ePut(NULL, E_SC0265_SCA_STATE, 0, 3,
sizeof(add_block->add_major_id),
&add_block->add_major_id,
sizeof(add_block->add_minor_id),
&add_block->add_minor_id,
l_ustring,
ustring);
sc0ePut(NULL, E_SC024D_SCA_ADDING, 0, 4,
sizeof(add_block->add_count),
&add_block->add_count,
sizeof(add_block->add_dt_cnt),
&add_block->add_dt_cnt,
sizeof(add_block->add_fo_cnt),
&add_block->add_fo_cnt,
sizeof(add_block->add_fi_cnt),
&add_block->add_fi_cnt);
} /* if ... SC_INGRES_SERVER | SC_STAR_SERVER ... */
status = adg_augment(add_block, size, new_adf_block, error);
if (status && (error->err_code))
break;
Sc_main_cb->sc_major_adf = add_block->add_major_id;
Sc_main_cb->sc_minor_adf = add_block->add_minor_id;
Sc_main_cb->sc_risk_inconsistency = add_block->add_risk_consistency;
*new_svcb = new_adf_block;
cur_size = scf_cb.scf_scm.scm_in_pages;
if (new_size)
*new_size = scf_cb.scf_scm.scm_in_pages;
if (old_adf_block && deallocate_flag)
{
/* Remainder of control block setup above */
scf_cb.scf_scm.scm_in_pages = old_size;
scf_cb.scf_scm.scm_addr = old_adf_block;
int_status = scf_call(SCU_MFREE, &scf_cb);
if (int_status)
{
sc0ePut(&scf_cb.scf_error, 0, NULL, 0);
sc0ePut(&scf_cb.scf_error, E_SC024C_SCA_DEALLOCATE, NULL, 0);
}
}
old_size = cur_size;
old_adf_block = new_adf_block;
new_adf_block = 0;
}
if (status && error->err_code)
{
sc0ePut(error, 0, NULL, 0);
sc0ePut(error, E_SC024E_SCA_NOT_ADDED, NULL, 0);
}
if (new_adf_block)
{
int_status = scf_call(SCU_MFREE, &scf_cb);
if (int_status)
{
sc0ePut(&scf_cb.scf_error, 0, NULL, 0);
sc0ePut(NULL, E_SC024C_SCA_DEALLOCATE, NULL, 0);
}
}
if (status && add_block && (add_block->add_trace & ADD_T_FAIL_MASK))
{
sc0ePut(NULL, E_SC0266_SCA_USER_SHUTDOWN, NULL, 0);
status = E_DB_FATAL;
}
else
{
status = E_DB_OK;
}
return(status);
}
/*{
** Name: dm1ibend - Finishes building a ISAM file for modify.
**
** Description:
** This routine finsihes building a ISAM for modify.
**
** Inputs:
** mct Pointer to modify context.
**
**
** Outputs:
** err_code A pointer to an area to return error
** codes if return status not E_DB_OK.
**
** Returns:
**
** E_DB_OK
** E_DB_ERROR
** E_DB_FATAL
**
** Exceptions:
** none
**
** Side Effects:
** none.
**
** History:
** 07-feb-86 (jennifer)
** Created for Jupiter.
** 29-may-89 (rogerk)
** Check status from dm1c_uncomp_rec calls.
** 08-jul-1992 (mikem)
** Reorganized logic from for (;;) loops to a do/while to get around
** sun4/acc compiler error "end-of-loop code not reached".
** 08-Jun-1992 (kwatts)
** 6.5 MPF project. Replaced dm1c_add, dmpp_get_offset_macros,
** and dm1c_get calls with accessor calls.
** 29-August-1992 (rmuth)
** Add call to dm1x_build_SMS to add the FHDR/FMAP(s).
** 14-oct-1992 (jnash)
** Reduced logging project.
** - Remove unused param's on dmpp_get calls.
** - Move compression out of dm1c layer, call tlv's here.
** dmpp_get now always returns a pointer to the buffer, never
** filling it in.
** 30-October-1992 (rmuth)
** Change for new DI file extend paradigm, just call dm1xfinish
** as it will build FHDR/FMAP and guarantee_space.
** 06-oct-1995 (nick)
** Whilst we ensured any pages unused in the last main data page
** allocation were formatted, they were formatted as DMPP_DATA. This
** causes verifydb to barf as a) they are marked as free in the FMAP
** and b) they are orphaned. Format as DMPP_FREE instead.
** 06-mar-1996 (stial01 for bryanp)
** Pass mct_page_size as the page_size argument to dmpp_format.
** 06-mar-1996 (stial01 for bryanp)
** Don't allocate tuple buffers on the stack.
** 06-may-1996 (thaju02 & nanpr01)
** New Page Format Support:
** Change page header references to use macros.
** Fix typo error.
** 20-may-1996 (ramra01)
** Added argument DMPP_TUPLE_INFO to get load accessor routines
** 03-june-1996 (stial01)
** Use DMPP_INIT_TUPLE_INFO_MACRO to init DMPP_TUPLE_INFO
** 18-jul-1996 (ramra01 for bryanp)
** When re-reading rows from data pages to build index, pass 0 as the
** row version number to dmpp_uncompress. The rows have just been
** loaded, so they are guaranteed to be in version 0 format.
** Pass 0 as the current table version to dmpp_load.
** 13-sep-1996 (canor01)
** Add NULL buffer to dmpp_uncompress call.
** 22-nov-96 (stial01,dilma04)
** Row Locking Project:
** load accessor: changed DMPP_TUPLE_INFO param to table_version
** 22-nov-1996 (nanpr01)
** init the version with the current table version to dmpp_load.
** 10-mar-1997 (stial01)
** dm1ibend: Use mct_crecord to compress a record
** 18-aug-1997 (nanpr01)
** b80775 - Higher level index corruption. The problem is that
** dm1xreadpage is returning a pointer to mct_ovfl pages if the
** page is in private cache. Then it is finding the low key on
** the page and try to load it. If load returns an out of space
** condition, it gets new page in the mct_ovfl, which might cause
** the key to be lost. So we just allocate a key area in this routine
** and copy the key into this buffer for load. mainsol code fix
** for this also will work, but we thought this will be a more
** general solution.
** 19-apr-2004 (gupsh01)
** Pass in adf control block in the call to dmpp_uncompress.
** 13-Feb-2008 (kschendel) SIR 122739
** Revise uncompress call, remove record-type and tid.
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: parameter changes to page accessors
*/
dm1ibend(
DM2U_M_CONTEXT *mct,
DB_ERROR *dberr)
{
DB_STATUS dbstatus;
STATUS status;
DM_TID tid;
DB_ATTS *att;
DMPP_PAGE *ip, *dp, *op;
i4 level, start, stop, newstop;
i4 pageno, mainpageno, next_page;
i4 offset, free;
i4 record_size;
i4 uncompressed_length;
i4 start_free, end_free;
i4 k;
char *key;
char *rec;
char *record;
char keytuple[DB_MAXTUP/2];
DMPP_SEG_HDR seg_hdr;
DMPP_SEG_HDR *seg_hdr_ptr;
i4 local_err;
DB_ERROR local_dberr;
CLRDBERR(dberr);
if (mct->mct_seg_rows)
seg_hdr_ptr = &seg_hdr;
else
seg_hdr_ptr = NULL;
record = mct->mct_crecord;
do /* loop is executed once, just there to break on errors */
{
/*
** Mark current data page as end of main pages and update overflow
** page for this chain.
*/
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata, 0);
start_free = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata) + 1;
end_free = mct->mct_startmain + mct->mct_kperpage - 1;
status = E_DB_OK;
for (next_page =
DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curdata);
next_page;
next_page =
DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curovfl))
{
status = dm1xreadpage(mct, DM1X_FORUPDATE, next_page,
&mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curovfl, 0);
}
if (status != E_DB_OK)
break;
mct->mct_main =
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curdata) + 1;
if ((mct->mct_curovfl == 0 ||
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curovfl) <
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curdata))
&&
(mct->mct_curseg == 0 ||
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curseg) <
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curdata)))
{
/*
** Truncate reserve window if no overflow pages have been
** allocated.
*/
end_free = start_free;
status = dm1xreserve(mct,
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata) + 1, dberr);
if (status != E_DB_OK)
break;
}
else
{
/*
** Allocate, initialize a write empty pages to end of segment so
** that the page will be formatted if read, because the high
** water mark will be placed after the index.
*/
do
{
status = dm1xnewpage(mct,
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata) + 1,
&mct->mct_curdata, dberr);
/*
** dm1xnewpage() returns with the page zero-filled
** and formated with status DMPP_MODIFY | DMPP_DATA.
** All we need to do is reset the status to
** DMPP_FREE | DMPP_MODIFY.
*/
if (status == E_DB_OK)
DMPP_VPT_INIT_PAGE_STAT_MACRO(mct->mct_page_type,
mct->mct_curdata,
DMPP_FREE | DMPP_MODIFY);
} while (status == E_DB_OK);
if (status != E_DB_INFO)
break;
}
/*
** Build the ISAM index on top of the data pages. Do this by reading
** through the just-written data pages and placing one key entry for
** each data page into an index page (if index page gets full, go to
** a new one).
**
** After reading through all data pages, start over reading through the
** just-written level of index pages, placing one key entry for each
** page into an index page on a new level. Continue this until all
** of one level's keys fit into one index page. That one index page
** is the ISAM root page.
*/
/*
** Read the primary pages by following the main page pointers.
** From the first key on every primary page construct an index key.
** This builds the first level of the index.
*/
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
/* Reformat as an INDEX page */
ip = mct->mct_curovfl;
/*
** dm1xnewpage() returns with the page zero-filled
** and formated with status DMPP_MODIFY | DMPP_DATA.
** All we need to do is reset the status to
** DMPP_DIRECT instead of calling dmpp_format again
** to reformat the entire page.
*/
DMPP_VPT_INIT_PAGE_STAT_MACRO(mct->mct_page_type,
ip,
DMPP_DIRECT);
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, ip, 0);
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, ip, 0);
level = 0;
start = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curovfl);
pageno = 0;
do
{
status = dm1xreadpage(mct, DM1X_FORREAD, pageno, &mct->mct_curdata,
dberr);
if (status != E_DB_OK)
break;
/*
** If the relation is empty, then page 0 will
** contain no records. Form a blank tuple
** and use it to create a one tuple directory
*/
dp = mct->mct_curdata;
key = keytuple;
if (DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, dp) == 0 &&
DMPP_VPT_GET_PAGE_NEXT_LINE_MACRO(mct->mct_page_type, dp) == 0)
{
MEfill(mct->mct_klen, 0, key);
}
else
{
DM_TID tid;
tid.tid_tid.tid_line = 0;
record_size = mct->mct_relwid;
status = (*mct->mct_acc_plv->dmpp_get)(mct->mct_page_type,
mct->mct_page_size, dp, &tid, &record_size,
&rec, NULL, NULL, NULL, seg_hdr_ptr);
if (seg_hdr_ptr && seg_hdr_ptr->seg_next)
{
if ( mct->mct_data_rac.compression_type != TCB_C_NONE )
{
status = dm1x_get_segs(mct, seg_hdr_ptr, rec,
mct->mct_segbuf, dberr);
rec = mct->mct_segbuf;
}
else
{
status = dm1x_get_segs(mct, seg_hdr_ptr, rec, record, dberr);
rec = record;
}
}
if (status == E_DB_OK)
{
if (mct->mct_data_rac.compression_type != TCB_C_NONE)
{
/* Note that the following accessor comes from the MCT
** and not the TCB.
** and not the TCB. In the case of a compression change
** (eg data to hidata), the TCB rac is the old way,
** while the MCT rac is the new way.
*/
status = (*mct->mct_data_rac.dmpp_uncompress)(
&mct->mct_data_rac,
rec, record, record_size, &uncompressed_length,
NULL, (i4)0 , (mct->mct_oldrcb)->rcb_adf_cb);
if ( (status != E_DB_OK) ||
(record_size != uncompressed_length) )
{
if (status != E_DB_OK)
{
uncompressed_length = 0;
record_size = 0;
}
uleFormat(NULL, E_DM942C_DMPP_ROW_UNCOMP,
(CL_ERR_DESC *)NULL, ULE_LOG, NULL, (char *)NULL,
(i4)0, (i4 *)NULL, &local_err, 7,
sizeof(DB_DB_NAME), &mct->mct_oldrcb->
rcb_tcb_ptr->tcb_dcb_ptr->dcb_name,
sizeof(DB_TAB_NAME),
&mct->mct_oldrcb->rcb_tcb_ptr->tcb_rel.relid,
sizeof(DB_OWN_NAME),
&mct->mct_oldrcb->rcb_tcb_ptr->tcb_rel.relowner,
0, tid.tid_tid.tid_page, 0, tid.tid_i4,
0, record_size, 0, uncompressed_length);
status = E_DB_ERROR;
}
rec = record;
}
}
if (status != E_DB_OK)
{
SETDBERR(dberr, 0, E_DM9252_DM1I_BEND);
break;
}
/* Make key from record. */
for (k = 0; k < mct->mct_keys; k++)
{
att = mct->mct_key_atts[k];
MEcopy(rec + att->offset, att->length,
&key[att->key_offset]);
}
}
/*
** Now put key on the current index page. If there is no room,
** go to next index page.
*/
while (dm1xbput(mct, ip, key, mct->mct_klen,
DM1C_LOAD_ISAMINDEX, 0, 0,
mct->mct_ver_number, dberr) == E_DB_WARN)
{
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
/* Reformat as an INDEX page */
ip = mct->mct_curovfl;
/*
** dm1xnewpage() returns with the page zero-filled
** and formated with status DMPP_MODIFY | DMPP_DATA.
** All we need to do is reset the status to
** DMPP_DIRECT instead of calling dmpp_format again
** to reformat the entire page.
*/
DMPP_VPT_INIT_PAGE_STAT_MACRO(mct->mct_page_type,
ip,
DMPP_DIRECT);
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, ip, pageno);
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, ip, level);
}
} while (status == E_DB_OK &&
(pageno = DMPP_VPT_GET_PAGE_MAIN_MACRO(mct->mct_page_type,
mct->mct_curdata)));
if (status != E_DB_OK)
break;
/*
** Build the second and successive levels of the index.
*/
for (level++, stop = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curovfl);
start < stop;
stop = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curovfl), level++)
{
/*
** Format the first page of the overflow page buffer as an ISAM
** directory page. Level is indicated in page_main, and the page
** containing the first key is indicated by page_ovfl.
*/
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
pageno = start;
start = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curovfl);
/* Reformat as an INDEX page */
ip = mct->mct_curovfl;
/*
** dm1xnewpage() returns with the page zero-filled
** and formated with status DMPP_MODIFY | DMPP_DATA.
** All we need to do is reset the status to
** DMPP_DIRECT instead of calling dmpp_format again
** to reformat the entire page.
*/
DMPP_VPT_INIT_PAGE_STAT_MACRO(mct->mct_page_type,
ip,
DMPP_DIRECT);
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, ip, pageno);
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, ip, level);
for (; pageno <= stop; pageno++)
{
status = dm1xreadpage(mct, DM1X_FORREAD, pageno,
&mct->mct_curdata, dberr);
if (status != E_DB_OK)
break;
/*
** Now put key on the current index page. If there is no room,
** go to next index page.
** Even if mct_seg_rows
** There should not be segments on index pages
*/
tid.tid_tid.tid_page =
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata);
tid.tid_tid.tid_line = 0;
(*mct->mct_acc_plv->dmpp_get)(mct->mct_page_type,
mct->mct_page_size, mct->mct_curdata, &tid,
&record_size, (char **)&key,
NULL, NULL, NULL, NULL);
/* copy the key from the page to the local buffer */
MEcopy(key, mct->mct_klen, keytuple);
while (dm1xbput(mct, ip, keytuple, mct->mct_klen,
DM1C_LOAD_ISAMINDEX, 0, 0,
(u_i2)0, dberr) == E_DB_WARN)
{
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
/* Reformat as an INDEX page */
ip = mct->mct_curovfl;
/*
** dm1xnewpage() returns with the page zero-filled
** and formated with status DMPP_MODIFY | DMPP_DATA.
** All we need to do is reset the status to
** DMPP_DIRECT instead of calling dmpp_format again
** to reformat the entire page.
*/
DMPP_VPT_INIT_PAGE_STAT_MACRO(mct->mct_page_type,
ip,
DMPP_DIRECT);
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, ip, pageno);
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, ip, level);
}
if (status != E_DB_OK)
break;
}
if (status != E_DB_OK)
break;
}
if (status != E_DB_OK)
break;
mct->mct_prim = DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curovfl);
/*
** Write build buffer to disk, deallocate build memory.
** build the fhdr/fmap and guarantee the space
*/
status = dm1xfinish(mct, DM1X_COMPLETE, dberr);
if (status != E_DB_OK)
break;
if (start_free < end_free)
{
status = dm1xfree(mct, start_free,
mct->mct_startmain + mct->mct_kperpage - 1, dberr);
if (status != E_DB_OK)
break;
}
} while (FALSE);
if (status == E_DB_OK)
return(status);
/* Deallocate build memory and return error. */
(VOID) dm1xfinish(mct, DM1X_CLEANUP, &local_dberr);
log_error(E_DM9252_DM1I_BEND, dberr);
return (status);
}
DB_STATUS
dmc_add_db(
DMC_CB *dmc_cb)
{
DMC_CB *dmc = dmc_cb;
DM_SVCB *svcb = dmf_svcb;
DMC_LOC_ENTRY *location;
i4 loc_count;
i4 flags;
i4 mode;
i4 dm2mode;
i4 error,local_error;
DMM_LOC_LIST *loc_ptr[4];
DB_STATUS status;
DMP_DCB *dcb;
CLRDBERR(&dmc->error);
for (status = E_DB_ERROR;;)
{
/* Verify control block parameters. */
if (dmc->dmc_op_type != DMC_DATABASE_OP)
{
SETDBERR(&dmc->error, 0, E_DM000C_BAD_CB_TYPE);
break;
}
if (dmc->dmc_id != svcb->svcb_id)
{
SETDBERR(&dmc->error, 0, E_DM002D_BAD_SERVER_ID);
break;
}
flags = 0;
if (dmc->dmc_flags_mask &
~(DMC_NOJOURNAL | DMC_JOURNAL | DMC_FSTCOMMIT | DMC_SOLECACHE |
DMC_CNF_LOCKED | DMC_CVCFG | DMC_ADMIN_DB | DMC_DMCM))
{
SETDBERR(&dmc->error, 0, E_DM001A_BAD_FLAG);
break;
}
if (dmc->dmc_flags_mask & DMC_NOJOURNAL)
flags |= DM2D_NOJOURNAL;
if (dmc->dmc_flags_mask & DMC_JOURNAL)
flags |= DM2D_JOURNAL;
if (dmc->dmc_flags_mask & DMC_FSTCOMMIT)
flags |= DM2D_FASTCOMMIT;
if (dmc->dmc_flags_mask & DMC_SOLECACHE)
flags |= DM2D_BMSINGLE;
if (dmc->dmc_flags_mask & DMC_CVCFG)
flags |= DM2D_CVCFG;
/* b97083 - Is the CNF file already locked by caller? */
if (dmc->dmc_flags_mask & DMC_CNF_LOCKED)
flags |= DM2D_CNF_LOCKED;
if (dmc->dmc_s_type & DMC_S_SINGLE)
flags |= DM2D_SINGLE;
if (dmc->dmc_s_type & DMC_S_MULTIPLE)
flags |= DM2D_MULTIPLE;
/*
** (ICL phil.p)
*/
if (dmc->dmc_flags_mask & DMC_DMCM)
flags |= DM2D_DMCM;
if (dmc->dmc_flags_mask2 & DMC2_READONLYDB)
flags |= DM2D_READONLYDB;
/* No MO objects if so requested */
if ( dmc->dmc_flags_mask2 & DMC2_NODBMO ||
mode == DMC_A_CREATE || mode == DMC_A_DESTROY )
{
flags |= DM2D_NODBMO;
}
/*
** It is an error to specify Fast Commit without specifying to
** use a single buffer manager.
** (ICL phil.p) UNLESS running DMCM, which effectively means
** running FastCommit in a Multi-Cache environment.
*/
if (!(flags & DM2D_DMCM))
{
if ((flags & (DM2D_FASTCOMMIT | DM2D_BMSINGLE)) == DM2D_FASTCOMMIT)
{
SETDBERR(&dmc->error, 0, E_DM0115_FCMULTIPLE);
break;
}
}
mode = dmc->dmc_db_access_mode;
if (mode != DMC_A_READ &&
mode != DMC_A_WRITE &&
mode != DMC_A_CREATE &&
mode != DMC_A_DESTROY)
{
SETDBERR(&dmc->error, 0, E_DM000F_BAD_DB_ACCESS_MODE);
break;
}
dm2mode = (mode == DMC_A_READ) ? DM2D_A_READ : DM2D_A_WRITE;
/* Check that at least one location was passed in. */
location = (DMC_LOC_ENTRY *)dmc->dmc_db_location.data_address;
loc_count = dmc->dmc_db_location.data_in_size / sizeof(DMC_LOC_ENTRY);
if (loc_count == 0)
{
SETDBERR(&dmc->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
/* Check if database should be created. */
if (mode == DMC_A_CREATE)
{
SCF_CB scf_cb;
SCF_SCI sci_list[2];
DB_NAME collation;
DB_NAME ucollation;
char *p;
char ucolname[] = "udefault";
i4 dbservice;
scf_cb.scf_length = sizeof(SCF_CB);
scf_cb.scf_type = SCF_CB_TYPE;
scf_cb.scf_facility = DB_DMF_ID;
scf_cb.scf_session = (SCF_SESSION)dmc->dmc_session_id;
scf_cb.scf_ptr_union.scf_sci = (SCI_LIST *)sci_list;
sci_list[0].sci_length = sizeof(dbservice);
sci_list[0].sci_code = SCI_DBSERVICE;
sci_list[0].sci_aresult = (char *)&dbservice;
sci_list[0].sci_rlength = 0;
scf_cb.scf_len_union.scf_ilength = 1;
status = scf_call(SCU_INFORMATION, &scf_cb);
if (status != E_DB_OK)
{
uleFormat(&scf_cb.scf_error, 0, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)0, (i4)0, (i4 *)0,
&error, 0);
SETDBERR(&dmc->error, 0, E_DM002F_BAD_SESSION_ID);
break;
}
/* Collation for iidbdb can only be the default. */
MEfill(sizeof(collation.db_name), ' ', collation.db_name);
NMgtAt("II_COLLATION", &p);
if (p && *p)
MEmove(STlength(p), p, ' ', sizeof(collation.db_name),
collation.db_name);
MEmove(STlength(ucolname), ucolname, ' ',
sizeof(ucollation.db_name), ucollation.db_name);
loc_ptr[0] = (DMM_LOC_LIST *) &loc_list[0];
loc_ptr[1] = (DMM_LOC_LIST *) &loc_list[1];
loc_ptr[2] = (DMM_LOC_LIST *) &loc_list[2];
loc_ptr[3] = (DMM_LOC_LIST *) &loc_list[3];
/* Even though the iidbdb is not "operative" at this stage, we
** will mark it as operative in the config file now (it will not
** be marked operative in the iidatabase catalog until after it
** is fully created). Although we would like to mark the iidbdb
** "inoperative" in the config file now and update it to operative
** status when creation is successfully completed (as is done for
** all other DBs) the internal procedure "iiqef_alter_db" which
** updates this bit will not work on the iidbdb; see comments in
** createdb regarding this problem.
*/
status = dmm_add_create(0, &dmc->dmc_db_name, &dmc->dmc_db_owner,
1, dbservice, DU_OPERATIVE,
(DB_LOC_NAME *) &dbdb_location, 11, "II_DATABASE", 4,
loc_ptr, collation.db_name, ucollation.db_name, &dmc->error);
if (status != E_DB_OK)
{
if (dmc->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmc->error, 0, NULL, ULE_LOG , NULL,
(char * )0, 0L, (i4 *)0, &local_error, 0);
SETDBERR(&dmc->error, 0, E_DM0084_ERROR_ADDING_DB);
}
break;
}
}
else if (mode == DMC_A_DESTROY)
{
return (E_DB_OK);
}
/* Call the physical layer to construct a DCB for this database. */
status = dm2d_add_db(flags, &dm2mode, &dmc->dmc_db_name,
&dmc->dmc_db_owner, loc_count, (DM2D_LOC_ENTRY *)location, &dcb,
(i4 *)dmc->dmc_lock_list, &dmc->error);
if (status != E_DB_OK)
{
if (dmc->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmc->error, 0, NULL, ULE_LOG , NULL,
(char * )0, 0L, (i4 *)0, &local_error, 0);
SETDBERR(&dmc->error, 0, E_DM0084_ERROR_ADDING_DB);
}
break;
}
/* Use the access mode passed back */
dmc->dmc_db_access_mode =
(dm2mode == DM2D_A_READ) ? DMC_A_READ : DMC_A_WRITE;
dmc->dmc_db_id = (char *)dcb;
dmc->dmc_dbservice = dcb->dcb_dbservice;
dmc->dmc_dbcmptlvl = dcb->dcb_dbcmptlvl;
dmc->dmc_1dbcmptminor = dcb->dcb_1dbcmptminor;
return (E_DB_OK);
}
return (status);
}
/*{
** Name: dmv_unufmap - UNDO of an Fmap Update operation.
**
** Description:
**
** Inputs:
** dmve Pointer to dmve control block.
** tabio Pointer to table io control block
** fmap Table's FMAP page.
** log_rec Fmap log record.
** plv Pointer to page level accessor
**
** Outputs:
** error Pointer to Error return area
** Returns:
** E_DB_OK
** E_DB_ERROR
**
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 23-Feb-2009 (hanal04) Bug 121652
** Created.
*/
static DB_STATUS
dmv_unufmap(
DMVE_CB *dmve,
DMP_TABLE_IO *tabio,
DMP_PINFO *fmappinfo,
DM0L_FMAP *log_rec,
DMPP_ACC_PLV *loc_plv)
{
LG_LSN *log_lsn = &log_rec->fmap_header.lsn;
LG_LSN lsn;
DB_STATUS status;
i4 dm0l_flags;
i4 *err_code = &dmve->dmve_error.err_code;
i4 page_type = log_rec->fmap_pg_type;
i4 fseg = DM1P_FSEG_MACRO(page_type, log_rec->fmap_page_size);
i4 first_bit = 0;
DM1P_FMAP *fmap = (DM1P_FMAP*)fmappinfo->page;
CLRDBERR(&dmve->dmve_error);
/*
** If recovery was found to be unneeded to both the old and new pages
** then we can just return.
*/
if (fmap == NULL)
return (E_DB_OK);
if(log_rec->fmap_first_used / fseg == log_rec->fmap_map_index)
first_bit = (log_rec->fmap_first_used % fseg) + 1;
if (DM1P_VPT_GET_FMAP_SEQUENCE_MACRO(page_type, fmap) !=
log_rec->fmap_map_index)
{
uleFormat(NULL, E_DM9677_DMVE_FMAP_FMAP_STATE, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, err_code, 6,
sizeof(DB_DB_NAME), tabio->tbio_dbname->db_db_name,
sizeof(DB_TAB_NAME), tabio->tbio_relid->db_tab_name,
sizeof(DB_OWN_NAME), tabio->tbio_relowner->db_own_name,
0, DM1P_VPT_GET_FMAP_PAGE_PAGE_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_SEQUENCE_MACRO(page_type, fmap),
0, log_rec->fmap_map_index);
dmd_log(1, (PTR) log_rec, 4096);
uleFormat(NULL, E_DM9642_UNDO_FMAP, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, err_code, 0);
}
/*
** Check direction of recovery operation:
**
** If this is a normal Undo, then we log the CLR for the operation
** and write the LSN of this CLR onto the newly updated page (unless
** dmve_logging is turned off - in which case the rollback is not
** logged and the page lsn is unchanged).
**
** If the record being processed is itself a CLR, then we are REDOing
** an update made during rollback processing. Updates are not relogged
** in redo processing and the LSN is moved forward to the LSN value of
** of the original update.
*/
if ((log_rec->fmap_header.flags & DM0L_CLR) == 0)
{
if (dmve->dmve_logging)
{
dm0l_flags = DM0L_CLR;
if (log_rec->fmap_header.flags & DM0L_JOURNAL)
dm0l_flags |= DM0L_JOURNAL;
status = dm0l_ufmap(dmve->dmve_log_id, dm0l_flags,
&log_rec->fmap_tblid,
tabio->tbio_relid, tabio->tbio_relowner,
log_rec->fmap_pg_type, log_rec->fmap_page_size,
log_rec->fmap_loc_cnt,
log_rec->fmap_fhdr_pageno, log_rec->fmap_fmap_pageno,
log_rec->fmap_map_index,
log_rec->fmap_hw_mark,
log_rec->fmap_fhdr_cnf_loc_id, log_rec->fmap_fmap_cnf_loc_id,
log_rec->fmap_first_used, log_rec->fmap_last_used,
log_lsn, &lsn, &dmve->dmve_error);
if (status != E_DB_OK)
{
/*
* Bug56702: return logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, err_code, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM9642_UNDO_FMAP);
return(E_DB_ERROR);
}
}
}
else
{
/*
** If we are processing recovery of an FMAP CLR (redo-ing the undo
** of an extend) then we don't log a CLR but instead save the LSN
** of the log record we are processing with which to update the
** page lsn's.
*/
lsn = *log_lsn;
}
/*
** Undo the Update FMAP operation.
*/
/*
** FHDR updates will be performed in the associated DM0L_FMAP and/or
** DM0L_EXTEND processing.
**
** Mark the appropriate ranges of pages as free.
*/
dmveMutex(dmve, fmappinfo);
DM1P_VPT_SET_FMAP_FIRSTBIT_MACRO(page_type, fmap, first_bit);
dm1p_fmfree(fmap, log_rec->fmap_first_used, log_rec->fmap_last_used,
page_type, log_rec->fmap_page_size);
DM1P_VPT_SET_FMAP_PAGE_STAT_MACRO(page_type,fmap,DMPP_MODIFY);
if (dmve->dmve_logging)
DM1P_VPT_SET_FMAP_PG_LOGADDR_MACRO(page_type, fmap, lsn);
dmveUnMutex(dmve, fmappinfo);
/*
** Release log file space allocated for logfile forces that may be
** required by the buffer manager when unfixing the pages just recovered.
*/
if (((log_rec->fmap_header.flags & DM0L_CLR) == 0) &&
((log_rec->fmap_header.flags & DM0L_FASTCOMMIT) == 0) &&
(dmve->dmve_logging))
{
dmve_unreserve_space(dmve, 1);
}
return(E_DB_OK);
}
/*
** History:
** 26-jul-1993 (bryanp)
** Fixed error handling in release_cb following dmxe_pass_abort call.
** 01-Oct-2004 (jenjo02)
** With Factotum threads, scb_oq_next will be empty
** but xcb_odcb_ptr will be correct when calling
** dmxe_pass_abort().
** 6-Jul-2006 (kschendel)
** Pass the db id to RDF in the right place.
** 16-Nov-2009 (kschendel) SIR 122890
** Update destroy-temp call parameters.
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: Deallocate lctx, jctx if allocated.
** 14-Apr-2010 (kschendel) SIR 123485
** Force a BLOB query-end during cleanup.
*/
static DB_STATUS
release_cb(
DMC_CB *dmc,
DML_SCB *scb)
{
DML_XCB *xcb;
DMP_DCB *dcb;
DMP_RCB *rcb;
i4 error,local_error;
CL_ERR_DESC clerror;
DB_STATUS status;
DML_ODCB *odcb;
DML_SPCB *spcb;
DML_XCCB *xccb;
DB_TAB_ID tbl_id;
CLRDBERR(&dmc->error);
while (scb->scb_x_next != (DML_XCB *) &scb->scb_x_next)
{
/* Get next XCB. */
xcb = (DML_XCB *) scb->scb_x_next;
odcb = (DML_ODCB *) xcb->xcb_odcb_ptr;
/* Remove blob Locator context */
if (scb->scb_lloc_cxt)
dm0m_deallocate((DM_OBJECT **)&scb->scb_lloc_cxt);
/* Close off any in-flight DMPE stuff */
status = dmpe_query_end(TRUE, TRUE, &dmc->error);
if ( status != E_DB_OK )
{
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
return (E_DB_FATAL);
}
/* Remove blob PCB's */
while (xcb->xcb_pcb_list != NULL)
dmpe_deallocate(xcb->xcb_pcb_list);
/* Close all open tables and destroy all open temporary tables. */
while (xcb->xcb_rq_next != (DMP_RCB*) &xcb->xcb_rq_next)
{
/* Get next RCB. */
rcb = (DMP_RCB *)((char *)xcb->xcb_rq_next -
(char *)&(((DMP_RCB*)0)->rcb_xq_next));
/* Remove from the XCB. */
rcb->rcb_xq_next->rcb_q_prev = rcb->rcb_xq_prev;
rcb->rcb_xq_prev->rcb_q_next = rcb->rcb_xq_next;
/* Remember DCB and table id of a temporary. */
dcb = 0;
if (rcb->rcb_tcb_ptr->tcb_temporary == TCB_TEMPORARY)
{
dcb = rcb->rcb_tcb_ptr->tcb_dcb_ptr;
tbl_id = rcb->rcb_tcb_ptr->tcb_rel.reltid;
}
/* Deallocate the RCB. */
status = dm2t_close(rcb, (i4)0, &dmc->error);
if (status != E_DB_OK)
{
if ((dmc->error.err_code != E_DM004B_LOCK_QUOTA_EXCEEDED) &&
(dmc->error.err_code != E_DM0042_DEADLOCK) &&
(dmc->error.err_code != E_DM004D_LOCK_TIMER_EXPIRED) &&
(dmc->error.err_code != E_DM004A_INTERNAL_ERROR))
{
uleFormat( &dmc->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
}
return (E_DB_FATAL);
}
/* Now destroy the TCB if it's a temporary. */
/* I can't be bothered to change this code to run off of the
** xccb list, so can't use dmt-destroy-temp. (schka24)
** I may regret this if it turns out that factotum can get
** here -- could end up deleting session temp...
*/
if (dcb)
{
RDF_CB rdfcb;
/* RDF doesn't use its end-session call, and anyway
** we know the table ID and it doesn't. Toss the
** table out of RDF so that it's not clogging up the
** RDF-works. This also ensures that nobody will accidently
** find the table by ID in RDF if the ID is reused.
** (Unlikely, but possible.)
** Zero in rdr_fcb says don't send invalidate dbevents
** to other servers. Zero in the rdfcb rdf_info_blk says
** we don't have anything fixed.
*/
MEfill(sizeof(RDF_CB), 0, &rdfcb);
STRUCT_ASSIGN_MACRO(tbl_id, rdfcb.rdf_rb.rdr_tabid);
rdfcb.rdf_rb.rdr_session_id = scb->scb_sid;
rdfcb.rdf_rb.rdr_unique_dbid = dcb->dcb_id;
rdfcb.rdf_rb.rdr_db_id = (PTR) odcb;
/* Ignore error on this call */
(void) rdf_call(RDF_INVALIDATE, &rdfcb);
/*
** Another RCB, yet to be deleted, could still be referencing
** the TCB. Handle the associated error from destroy as normal
** in this case.
*/
status = dm2t_destroy_temp_tcb(scb->scb_lock_list,
dcb, &tbl_id, &dmc->error);
if (status != E_DB_OK &&
dmc->error.err_code != E_DM005D_TABLE_ACCESS_CONFLICT)
{
uleFormat( &dmc->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
return (E_DB_FATAL);
}
}
}
/* One more time after table closes, guarantees BQCB's deleted */
status = dmpe_query_end(TRUE, FALSE, &dmc->error);
if ( status != E_DB_OK )
{
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
return (E_DB_FATAL);
}
/* Remove SPCBs. */
while (xcb->xcb_sq_next != (DML_SPCB*) &xcb->xcb_sq_next)
{
/* Get next SPCB. */
spcb = xcb->xcb_sq_next;
/* Remove SPCB from XCB queue. */
spcb->spcb_q_next->spcb_q_prev = spcb->spcb_q_prev;
spcb->spcb_q_prev->spcb_q_next = spcb->spcb_q_next;
/* Deallocate the SPCB. */
dm0m_deallocate((DM_OBJECT **)&spcb);
}
/* Remove XCCBs. */
while (xcb->xcb_cq_next != (DML_XCCB*)&xcb->xcb_cq_next)
{
/* Get pend XCCB */
xccb = xcb->xcb_cq_next;
/* Remove from queue. */
xccb->xccb_q_next->xccb_q_prev = xccb->xccb_q_prev;
xccb->xccb_q_prev->xccb_q_next = xccb->xccb_q_next;
/* Deallocate. */
dm0m_deallocate((DM_OBJECT **)&xccb);
}
/* Deallocate lctx, jctx if allocated */
if ( xcb->xcb_lctx_ptr )
dm0m_deallocate(&xcb->xcb_lctx_ptr);
if ( xcb->xcb_jctx_ptr )
{
/* Close any open jnl file, deallocate jctx */
status = dm0j_close(&xcb->xcb_jctx_ptr, &dmc->error);
if ( status )
{
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
return (E_DB_FATAL);
}
}
/*
** Since we are deallocating a session which has an open transaction,
** we signal the RCP to abort the transaction for us before deallocating
** its context.
**
** Call dmxe to flush any required pages from the Buffer Manager and
** to make the abort request to the RCP.
**
** The LG context will be freed up by the RCP when the abort is
** complete.
**
** Reference the DB opened on the XCB, not SCB; if this
** is a Factotum thread, scb_oq_next will be empty,
** but xcb_odcb_ptr will be valid.
** Likewise, use xcb_lk_id rather than scb_lock_list.
*/
/* XXXX log error message about why pass abort is called */
status = dmxe_pass_abort(xcb->xcb_log_id, xcb->xcb_lk_id,
&xcb->xcb_tran_id, odcb->odcb_dcb_ptr->dcb_id, &dmc->error);
if (status)
{
/* XXXX May want to dmd_check here */
uleFormat(&dmc->error, 0, NULL, ULE_LOG, NULL, NULL, 0, NULL, &error, 0);
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
return (E_DB_FATAL);
}
/* Remove XCB from SCB queue. */
xcb->xcb_q_next->xcb_q_prev = xcb->xcb_q_prev;
xcb->xcb_q_prev->xcb_q_next = xcb->xcb_q_next;
scb->scb_x_ref_count--;
dm0m_deallocate((DM_OBJECT **)&xcb);
}
/* Close all the opened database of the session. */
while (scb->scb_oq_next != (DML_ODCB *) &scb->scb_oq_next)
{
/* Get next ODCB. */
odcb = (DML_ODCB *) scb->scb_oq_next;
status = dm2d_close_db(odcb->odcb_dcb_ptr, scb->scb_lock_list,
DM2D_NLG | DM2D_NLK_SESS, &dmc->error);
if (status != E_DB_OK)
{
if (dmc->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmc->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL, &local_error, 0);
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
}
return (E_DB_FATAL);
}
scb->scb_o_ref_count--;
odcb->odcb_q_next->odcb_q_prev = odcb->odcb_q_prev;
odcb->odcb_q_prev->odcb_q_next = odcb->odcb_q_next;
dm0s_mrelease(&odcb->odcb_cq_mutex);
dm0m_deallocate((DM_OBJECT **)&odcb);
}
return(E_DB_OK);
}
/*{
** Name: dmve_load - The recovery of a load table opration.
**
** Description:
**
** This function performs UNDO recovery of a load operation.
** Load operations are NON-REDO and are not journalled.
**
** User tables are loaded in two different ways. For HEAP
** tables, rows are added to the already existing table. For HASH,
** BTREE and ISAM, a new file is created and loaded, and then
** renamed to the base file. The method used is given by
** log_rec->dul_recreate.
**
** If dul_recreate is set, recovery will have already destroyed the
** new file and moved the old one back in place. All we have to do is
** close-purge the TCB.
**
** If dul_recreate is not set, then we have to delete all the rows that
** were added to the table. We also have to deal with the possibility
** that the load was killed off in the middle of a file extend, which
** may leave some overflow pointers invalid. To avoid these problems,
** we bypass normal access methods and just read through the file page
** by page, formatting each as an empty data page.
**
** For HEAP files one can also bulkload into a table with data.
** To support recovery for this type of bulkload, a new variable
** was added to the log record and indicates that last valid page
** of the heap table before the load began. In all other cases this
** variable is set to zero. To recover this operation, all pages
** allocated after the page indicated by the lastpage variable, are
** freed and the overflow pointer on the lastpage is set to zero.
**
**
** Inputs:
** dmve_cb
** .dmve_log_rec The load table operation log record.
** .dmve_action Should only be DMVE_UNDO.
** .dmve_lg_addr The log address of the log record.
** .dmve_dcb_ptr Pointer to DCB.
** .dmve_tran_id The physical transaction id.
** .dmve_lk_id The transaction lock list id.
** .dmve_log_id The logging system database id.
** .dmve_db_lockmode The lockmode of the database. Should be
** DM2T_X or DM2T_S.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 29-sep-87 (rogerk)
** Created new for Jupiter.
** 22-jan-90 (rogerk)
** Make sure the page buffer is aligned on ALIGN_RESTRICT boundary
** for byte-align machines.
** 14-jun-90 (jennifer)
** Change routines to use dm1sbbegin and dm1sbend routines
** to build empty files. These routines were used to insure
** all the new file header, bit map information was set correctly.
** For bulkload into a heap with data, a new recovery algorithm
** was used to insure file header and bit map were retained.
** 30-Dec-1991 (rmuth)
** When we abort a load into an empty Btree table we just rebuild
** an empty btree table ontop of the loaded table. We do this by
** calling the build routines dm1bbbegin and dm1bbend, the dm1bbbegin
** routine expects certain fields in the mct control block to be set,
** these fields are subsequently used during the dm1bbput operations.
** As we do not use dm1bbput we were not setting these fields hence
** dm1bbbegin was issuing an error. As we already have the values
** in the TCB we initialise the values in the mct.
** 8-Jan-1992 (rmuth)
** Abort of load was setting reltups and relpages to incorrect values,
** because it was not taking into account the fact that the update of
** relpages and reltups is logged by a SREP record which is also
** rolled back causing relpages and reltups to be set to their
** correct preload values. The fix is to set tcb_page_adds and
** tcb_tup_adds to zero so that relpages and reltups are left alone
** by the rollback of the LOAD log record.
** 13-feb-1992 (bryanp)
** Set mct_allocation and mct_extend. The build routines won't actually
** need these, since we're rebuilding over an existing file, but it's
** good to set all our parameters before calling the build routines,
** just as a matter of practice.
** 28-may-1992 (bryanp)
** Set mct_inmemory and mct_rebuild to 0.
** 09-jun-1992 (kwatts)
** 6.5 MPF Changes. Set mct_compressed from relcomptype.
** Set up new mct_data_atts instead of mct_atts_ptr (removed).
** 29-August-1992 (rmuth)
** Add parameter to dm1p_lastused.
** 30-October-1992 (rmuth)
** Set the mct_guarantee_on_disk flag.
** 8-oct-1992 (bryanp)
** Initialize mct_buildrcb.
** 14-dec-1992 (jnash)
** Reduced logging project. Back off the previous change
** (in 6.5, never used in 6.4) where we always created an
** empty table, revert back to the old 6.4 file swapping
** behavior. This is because of recovery problems when someone
** first deletes all rows in a table (including rows on overflow
** pages), and then performs a load, and then aborts the load.
** In this case installing an empty table is not the thing to do.
** Upcoming "with emptytable" option will once again introduce
** this feature.
** 08-feb-1993 (rmuth)
** Use DM2T_A_OPEN_NOACCESS when opening the table so that
** we do not check the FHDR/FMAP as these may be ill at the
** moment.
** 18-oct-1993 (rogerk)
** Changed heap load recovery to rewrite the allocated pages to
** be free pages rather than leaving them as formatted data pages.
** This allows verifydb and patch table to run without danger
** of thinking the freed pages should be restored and the tuples
** resurrected. Also ifdef'd code which does recovery for structured
** tables when the EMPTY_TABLE copy option is specified.
** 18-oct-1993 (rogerk)
** Added dmve_unreserve_space call to release logfile space
** reserved for logforces in the purge tcb call.
** 15-apr-1994 (chiku)
** Bug56702: return logfull indication.
** 06-mar-1996 (stial01 for bryanp)
** Pass page_size to format accessor.
** 06-may-1996 (thaju02)
** New page format support: change page header references to use
** macros.
** 21-may-1997 (stial01)
** Added flags arg to dm0p_unmutex call(s).
** 01-Dec-2004 (jenjo02)
** Added DM0P_TABLE_LOCKED_X flag for bug 108074 completeness.
** 21-Sep-2006 (kschendel)
** Apparently this never worked for partitions! Fix.
** Also, it's probably a bad idea to open the load table NOACCESS.
** And finally, don't use TABLE_LOCKED_X here because we might
** be processing an fhdr/fmap in the loop that reformats DATA
** pages as free. Causes Unfix RELEASE warnings in the BM.
** We never update fmap/fhdr so don't worry about LOCKED_X.
** 16-Nov-2009 (kschendel) SIR 122890
** Don't close-purge the TCB if the load was non-recreate load.
** We may not have a control lock in that situation, and there's
** no need to close-purge anyway unless it was a recreate load.
** 13-Apr-2010 (kschendel) SIR 123485
** Open no-coupon to avoid unnecessary LOB overhead.
*/
DB_STATUS
dmve_load(
DMVE_CB *dmve_cb)
{
DMVE_CB *dmve = dmve_cb;
DM0L_LOAD *log_rec = (DM0L_LOAD *)dmve_cb->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->dul_header.lsn;
DMP_RCB *rcb;
DMP_RCB *master_rcb;
DMP_TCB *t;
DMP_TABLE_IO *tbio = NULL;
DMPP_PAGE *page;
DMPP_ACC_PLV *loc_plv;
DB_TAB_ID master_id;
DB_TAB_TIMESTAMP timestamp;
LG_LSN lsn;
DM_PAGENO pageno;
DM_PAGENO last_page;
i4 close_flags;
i4 dm0l_flags;
i4 error;
i4 local_error;
DB_STATUS status;
DB_ATTS **keyatts = (DB_ATTS **)0;
bool is_partition = FALSE;
DB_ERROR local_dberr;
DMP_PINFO *pinfo = NULL;
CLRDBERR(&dmve->dmve_error);
DMVE_CLEAR_TABINFO_MACRO(dmve);
rcb = master_rcb = NULL;
for (;;)
{
if (log_rec->dul_header.length != sizeof(DM0L_LOAD) ||
log_rec->dul_header.type != DM0LLOAD ||
dmve->dmve_action != DMVE_UNDO)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
status = E_DB_ERROR;
break;
}
/* Finish with close-purge if this was a recreate load (file
** renaming going on). Don't purge if a non-recreate load undo;
** not only is it unnecessary, but we may not have the necessary
** X control lock in the non-recreate case.
*/
close_flags = DM2T_PURGE;
if (! log_rec->dul_recreate)
close_flags = DM2T_NOPURGE;
/*
** Open up the table so we can possibly recover the load action
** (if a non-recreate load was done) and so that we can close-purge
** the TCB below. Unfortunately for the non-recreate undo, we
** need a real RCB, not just a TBIO. So if the loaded table was
** a partition, open the master as well.
*/
STRUCT_ASSIGN_MACRO(log_rec->dul_tbl_id, master_id);
if (master_id.db_tab_index < 0)
{
is_partition = TRUE;
master_id.db_tab_index = 0;
}
status = dm2t_open(dmve->dmve_dcb_ptr, &master_id, DM2T_X,
DM2T_UDIRECT, DM2T_A_WRITE_NOCPN, (i4)0, (i4)20, 0,
dmve->dmve_log_id, dmve->dmve_lk_id, 0, 0, dmve->dmve_db_lockmode,
&dmve->dmve_tran_id, ×tamp,
&master_rcb, (DML_SCB *)0, &dmve->dmve_error);
if (status != E_DB_OK)
break;
if (is_partition)
{
status = dm2t_open(dmve->dmve_dcb_ptr, &log_rec->dul_tbl_id,
DM2T_X, DM2T_UDIRECT, DM2T_A_WRITE_NOCPN, (i4)0, (i4)20, 0,
dmve->dmve_log_id, dmve->dmve_lk_id, 0, 0,
dmve->dmve_db_lockmode,
&dmve->dmve_tran_id, ×tamp, &rcb, (DML_SCB *)0, &dmve->dmve_error);
if (status != E_DB_OK)
break;
}
else
{
rcb = master_rcb;
}
/* Turn off logging. */
rcb->rcb_logging = 0;
t = rcb->rcb_tcb_ptr;
tbio = &t->tcb_table_io;
dmve->dmve_tbio = tbio;
loc_plv = t->tcb_acc_plv;
MEfill(sizeof(dmve->dmve_pages), '\0', &dmve->dmve_pages);
if (t->tcb_rel.relspec == TCB_BTREE ||
t->tcb_rel.relspec == TCB_RTREE)
keyatts = t->tcb_leafkeys;
else
keyatts = t->tcb_key_atts; /* isam, hash */
/*
** If dul_recreate is set, then a new file was created for the load
** and then renamed on top of the old file. Recovery will have already
** destroyed the new file and moved the old one back in place.
** All we have to do now is close-purge the TCB at the bottom.
**
** If dul_recreate is not set then the COPY was to an existing heap
** table and we added the new rows into the current file. The undo
** recovery action is then to delete the added rows by freeing the
** new pages added in the load.
** Non-recreate mode recovery is only permitted for heap. There is
** no good way to undo loads into a non-heap table that would be
** guaranteed to restore the table to its exact physical state.
** Thus additional DML undoes would not necessarily work.
** Therefore Ingres never chooses non-recreate mode for anything
** but heap tables.
**
*/
if ( ! log_rec->dul_recreate)
{
if (log_rec->dul_lastpage >= 0)
{
/*
** Copy into an existing heap (possibly non-empty).
** Free the pages allocated during the copy.
*/
status = dm1p_lastused(rcb, 0, &last_page, (DMP_PINFO*)NULL,
&dmve->dmve_error);
if (status != E_DB_OK)
break;
status = dm1p_free(rcb, log_rec->dul_lastpage + 1,
(i4) last_page, &dmve->dmve_error);
if (status != E_DB_OK)
break;
/*
** Find the page which was at the end of the HEAP before
** the load was started and change its ovfl page pointer
** to unlink the new pages.
*/
status = dmve_cachefix_page(dmve, log_lsn,
tbio, log_rec->dul_lastpage,
DM0P_READAHEAD,
loc_plv,
&pinfo);
if (status != E_DB_OK)
break;
page = pinfo->page;
dmveMutex(dmve, pinfo);
DMPP_VPT_SET_PAGE_OVFL_MACRO(t->tcb_rel.relpgtype, page, 0);
DMPP_VPT_SET_PAGE_STAT_MACRO(t->tcb_rel.relpgtype, page,
DMPP_MODIFY);
dmveUnMutex(dmve, pinfo);
status = dm0p_uncache_fix(tbio, DM0P_UNFIX, dmve->dmve_lk_id,
dmve->dmve_log_id, &dmve->dmve_tran_id, pinfo,
&dmve->dmve_error);
if (status != E_DB_OK)
break;
/*
** Cycle through the allocated pages and re-format them to
** be free pages. Be careful only to update actual allocated
** Data pages; don't muck with any pages that were assigned
** as FMAP's for the extended table.
**
** Specify readahead flag and hope to get group IO actions.
*/
for (pageno = log_rec->dul_lastpage + 1;
pageno <= last_page;
pageno++)
{
status = dmve_cachefix_page(dmve, log_lsn,
tbio, pageno,
DM0P_READAHEAD,
loc_plv,
&pinfo);
if (status != E_DB_OK)
break;
page = pinfo->page;
if (DMPP_VPT_GET_PAGE_STAT_MACRO(t->tcb_rel.relpgtype, page) &
DMPP_DATA)
{
dmveMutex(dmve, pinfo);
(*loc_plv->dmpp_format)(t->tcb_rel.relpgtype,
t->tcb_rel.relpgsize, page, pageno, DMPP_FREE,
DM1C_ZERO_FILL);
DMPP_VPT_SET_PAGE_STAT_MACRO(t->tcb_rel.relpgtype, page,
DMPP_MODIFY);
dmveUnMutex(dmve, pinfo);
}
status = dm0p_uncache_fix(tbio, DM0P_UNFIX,
dmve->dmve_lk_id, dmve->dmve_log_id,
&dmve->dmve_tran_id, pinfo, &dmve->dmve_error);
if (status != E_DB_OK)
break;
}
}
else
{
/*
** Copy into non-heap table that did not use recreate mode.
** This mode is not currently supported by the recovery
** system.
*/
TRdisplay("DMVE_LOAD: Unexpected load undo mode - non-\n");
TRdisplay(" recreate mode load on a structured table.\n");
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
status = E_DB_ERROR;
break;
}
rcb->rcb_page_adds = 0;
rcb->rcb_tup_adds = 0;
}
/*
** Close and maybe purge the table.
*/
status = dm2t_close(rcb, close_flags, &dmve->dmve_error);
rcb = (DMP_RCB *) 0;
if (status != E_DB_OK)
break;
if (is_partition)
{
status = dm2t_close(master_rcb, close_flags, &dmve->dmve_error);
master_rcb = NULL;
if (status != E_DB_OK)
break;
}
/*
** Write the CLR if necessary.
*/
if ((dmve->dmve_logging) &&
((log_rec->dul_header.flags & DM0L_CLR) == 0))
{
dm0l_flags = (log_rec->dul_header.flags | DM0L_CLR);
status = dm0l_load(dmve->dmve_log_id, dm0l_flags,
&log_rec->dul_tbl_id, &log_rec->dul_name,
&log_rec->dul_owner, &log_rec->dul_location,
log_rec->dul_structure, log_rec->dul_recreate,
log_rec->dul_lastpage, log_lsn, &lsn,
&dmve->dmve_error);
if (status != E_DB_OK)
{
/*
* Bug56702: return logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
break;
}
/*
** Release log file space allocated when the LOAD log record
** was written. (LOAD allows for a FORCE in case of purging.)
*/
dmve_unreserve_space(dmve, 1);
}
return (E_DB_OK);
}
/*
** Error cleanup.
*/
if (pinfo && pinfo->page)
{
status = dm0p_uncache_fix(&rcb->rcb_tcb_ptr->tcb_table_io, DM0P_UNFIX,
dmve->dmve_lk_id, dmve->dmve_log_id, &dmve->dmve_tran_id,
pinfo, &local_dberr);
if (status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_error, 0);
}
}
if (rcb)
{
status = dm2t_close(rcb, close_flags, &local_dberr);
if (status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_error, 0);
}
}
if (master_rcb && is_partition)
{
status = dm2t_close(master_rcb, close_flags, &local_dberr);
if (status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_error, 0);
}
}
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL, (char *)NULL,
(i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM961C_DMVE_LOAD);
return(E_DB_ERROR);
}
/*{
** Name: scu_xencode - encrypt a character string
**
** Description:
** This function uses CI routines to encrypt a character string.
** Since the character string is used to generate the key schedule,
** the encryption is essentially one-way (you'd need to know the
** password to decode the password....) This routine was designed
** to encrypt application_id passwords.
**
** Inputs:
** SCU_XENCODE the opcode to scf_call()
** scf_cb control block in which is specified
** .scf_ptr_union.scf_xpassword
** pointer to buffer to be encrypted
** .scf_nbr_union.scf_xpasskey
** pointer to seed for key schedule
** .scf_len_union.scf_xpwdlen
** length of password and key seed
**
** Outputs:
** scf_cb the same control block
** .error the error control area
** .err_code E_SC_OK or ...
** E_SC0261_XENCODE_BAD_PARM
** E_SC0262_XENCODE_BAD_RESULT
** Returns:
** E_DB_{OK, WARNING, ERROR, FATAL}
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 24-mar-89 (ralph)
** Written for terminator
** 20-may-89 (ralph)
** Changed encryption to use separate key
** 06-jun-89 (ralph)
** Fixed unix compile problems
** 06-may-1993 (ralph)
** DELIM_IDENT:
** Translate key seed to lower case prior to encryption.
** 2-Jul-1993 (daveb)
** prototyped.
** 14-jul-93 (ed)
** replacing <dbms.h> by <gl.h> <sl.h> <iicommon.h> <dbdbms.h>
** 12-Sep-2007 (drivi01)
** Modified scu_xencode function to fix numerous bugs.
** The buffers for password manipulation shouldn't exceed
** the size of scb_xpassword field in SCF control block,
** otherwise the data will be truncated.
*/
DB_STATUS
scu_xencode(SCF_CB *scf_cb, SCD_SCB *scb )
{
STATUS status;
CI_KS KS;
char inbuffer[DB_PASSWORD_LENGTH+1];
char outbuffer[DB_PASSWORD_LENGTH+1];
char keybuffer[DB_PASSWORD_LENGTH];
u_i2 i2_size;
i4 longnat_size;
i4 nat_size;
char *char_ptr;
#define PASSINIT "hjodvwHOJHOJhodh498032&*&*#)$&*jpkshghjlg58925fjkdjkpg"
status = E_DB_OK;
CLRDBERR(&scf_cb->scf_error);
/* Ensure input parameter is okay */
if ((scf_cb->scf_len_union.scf_xpwdlen <= 0) ||
(scf_cb->scf_len_union.scf_xpwdlen >= sizeof(inbuffer)) ||
(scf_cb->scf_nbr_union.scf_xpasskey == NULL) ||
(scf_cb->scf_ptr_union.scf_xpassword == NULL))
{
sc0ePut(NULL, E_SC0261_XENCODE_BAD_PARM, NULL, 0);
SETDBERR(&scf_cb->scf_error, 0, E_SC0261_XENCODE_BAD_PARM);
return(E_DB_ERROR);
}
/* Copy string to input buffer */
MEmove(scf_cb->scf_len_union.scf_xpwdlen,
(PTR)scf_cb->scf_ptr_union.scf_xpassword,
(char)'\0',
sizeof(inbuffer),
(PTR)inbuffer);
/* Copy key to key buffer */
MEmove(scf_cb->scf_len_union.scf_xpwdlen,
(PTR)scf_cb->scf_nbr_union.scf_xpasskey,
(char)'?',
sizeof(keybuffer),
(PTR)keybuffer);
/* Fold the key to lower case */
for (nat_size = sizeof(keybuffer), char_ptr = keybuffer;
nat_size > 0;
nat_size = CMbytedec(nat_size, char_ptr), char_ptr = CMnext(char_ptr))
{
CMtolower(char_ptr, char_ptr);
}
/* Remove white space from input string */
nat_size = STzapblank(inbuffer, outbuffer);
/* Check size */
if ((nat_size <= 0) ||
(nat_size > sizeof(outbuffer)-1))
{
sc0ePut(NULL, E_SC0261_XENCODE_BAD_PARM, NULL, 0);
SETDBERR(&scf_cb->scf_error, 0, E_SC0261_XENCODE_BAD_PARM);
return(E_DB_ERROR);
}
/* Initialize input buffer to "garbage" */
MEmove(sizeof(PASSINIT), (PTR)PASSINIT, (char)'?',
sizeof(inbuffer), (PTR)inbuffer);
/* Normalize the string back into input buffer */
MEcopy((PTR)outbuffer, nat_size, (PTR)inbuffer);
/* Reset output buffer to blanks */
MEfill(sizeof(outbuffer),
(u_char)' ',
(PTR)outbuffer);
/*
** First, encrypt the key seed using the string to encode.
** Then, encrypt the string using the encrypted seed.
** This is done to prevent two roles with the same password
** from having the same encrypted value.
** Note that this makes the encryption one-way, since
** the password must be provided to decrypt the password!
*/
/* Generate the key schedule to encrypt the key seed */
(VOID)CIsetkey((PTR)inbuffer, KS);
/* Encrypt the key seed */
longnat_size = DB_PASSWORD_LENGTH;
(VOID)CIencode((PTR)keybuffer, longnat_size, KS, (PTR)outbuffer);
/* Generate the second key schedule */
(VOID)CIsetkey((PTR)keybuffer, KS);
/* Encode the string */
longnat_size = DB_PASSWORD_LENGTH;
(VOID)CIencode((PTR)inbuffer, longnat_size, KS, (PTR)outbuffer);
/* Make sure it was really encoded */
if ((char *)STskipblank(outbuffer, (i4)sizeof(outbuffer))
!= NULL)
{
/* It was; copy result to caller's area */
i2_size = scf_cb->scf_len_union.scf_xpwdlen;
MEmove(sizeof(outbuffer), (PTR)outbuffer, (char)' ',
i2_size, (PTR)scf_cb->scf_ptr_union.scf_xpassword);
}
else
{
/* The encryption did not work; return an error */
sc0ePut(NULL, E_SC0262_XENCODE_BAD_RESULT, NULL, 0);
SETDBERR(&scf_cb->scf_error, 0, E_SC0262_XENCODE_BAD_RESULT);
status = E_DB_ERROR;
}
return(status);
}
DB_STATUS
dmc_end_session(
DMC_CB *dmc_cb)
{
DM_SVCB *svcb;
DMC_CB *dmc = dmc_cb;
DML_SCB *scb;
DB_STATUS status;
STATUS cl_status;
i4 error, local_error;
CL_ERR_DESC clerror;
DML_SLCB *slcb;
DMT_CB *dmtcb;
DB_ERROR local_dberr;
svcb = dmf_svcb;
svcb->svcb_stat.ses_end++;
CLRDBERR(&dmc->error);
for (status = E_DB_ERROR;;)
{
if (dmc->dmc_op_type != DMC_SESSION_OP)
{
SETDBERR(&dmc->error, 0, E_DM000C_BAD_CB_TYPE);
break;
}
if ( (scb = GET_DML_SCB(dmc->dmc_session_id)) == 0 ||
dm0m_check((DM_OBJECT *)scb, (i4)SCB_CB) )
{
SETDBERR(&dmc->error, 0, E_DM002F_BAD_SESSION_ID);
break;
}
/* Toss any blob holding temps left in this session */
if (scb->scb_oq_next != (DML_ODCB *) &scb->scb_oq_next)
(void) dmpe_free_temps(scb->scb_oq_next, &local_dberr);
if (dmc_cb->dmc_flags_mask & DMC_FORCE_END_SESS)
{
/* Release all the DMF data structures held by the session. */
status = release_cb(dmc, scb);
if (status)
break;
}
if (scb->scb_x_ref_count != 0)
{
SETDBERR(&dmc->error, 0, E_DM0060_TRAN_IN_PROGRESS);
status = E_DB_ERROR;
break;
}
if (scb->scb_o_ref_count != 0)
{
SETDBERR(&dmc->error, 0, E_DM003F_DB_OPEN);
status = E_DB_ERROR;
break;
}
/* Remove SLCBs. */
while (scb->scb_kq_next != (DML_SLCB *) &scb->scb_kq_next)
{
/* Get next SLCB. */
slcb = (DML_SLCB *) scb->scb_kq_next;
/* Remove from queue. */
slcb->slcb_q_next->slcb_q_prev = slcb->slcb_q_prev;
slcb->slcb_q_prev->slcb_q_next = slcb->slcb_q_next;
/* Deallocate. */
dm0m_deallocate((DM_OBJECT **)&slcb);
}
/*
** Don't release the session lock list if the session is forced
** to terminate or if the session has a pending WILLING COMMIT
** transaction.
** The session lock list will be released by the recovery process,
** if the session is going to be aborted by the recovery process or
** in the session re-association time.
**
** If Factotum session, there may not be a session lock list.
*/
if ( (dmc_cb->dmc_flags_mask & DMC_FORCE_END_SESS) == 0 &&
(scb->scb_state & SCB_WILLING_COMMIT) == 0 &&
scb->scb_lock_list )
{
/* Release the session lock list. */
i4 lock_list = scb->scb_lock_list;
/* attempt this but once */
scb->scb_lock_list = 0;
cl_status = LKrelease(LK_ALL, lock_list, (LK_LKID *)0,
(LK_LOCK_KEY *)0, (LK_VALUE *)0, &clerror);
if (cl_status != OK)
{
uleFormat(NULL, cl_status, &clerror,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&local_error, 0);
uleFormat( NULL, E_DM901B_BAD_LOCK_RELEASE, &clerror, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_error, 1,
0, lock_list);
SETDBERR(&dmc->error, 0, E_DM0106_ERROR_ENDING_SESSION);
status = E_DB_ERROR;
break;
}
}
/* Clean up mutexes. */
dm0s_mrelease(&scb->scb_bqcb_mutex);
/* Free session's memory pool(s), if any */
(VOID) dm0m_destroy(scb, &local_dberr);
/* Remove SCB from SVCB queue of active sessions. */
dm0s_mlock(&svcb->svcb_sq_mutex);
scb->scb_q_next->scb_q_prev = scb->scb_q_prev;
scb->scb_q_prev->scb_q_next = scb->scb_q_next;
svcb->svcb_cnt.cur_session--;
/* Recalc serverwide session-trace bits if we had any turned
** on. Don't bother for factota, session bit is probably still
** in the parent session (and this is an optimization anyway).
** 96 session tracepoints == 3 i4's.
** Do this while the mutex is held.
*/
if ((scb->scb_s_type & SCB_S_FACTOTUM) == 0
&& (scb->scb_trace[0] | scb->scb_trace[1] | scb->scb_trace[2]) != 0)
dmf_trace_recalc();
dm0s_munlock(&svcb->svcb_sq_mutex);
/* The DML_SCB is permanently housed in SCF's SCB */
status = E_DB_OK;
break;
}
return(status);
}
/*{
**
** Name: dmc_write_along - asynchronous, unobtrusive write along thread
**
** EXTERNAL call format: status = dmf_call(DMC_WRITE_ALONG, &dmc_cb);
**
** Description:
** The dmc_write_along routine provides an unobtrusive version of the
** write behind threads found in normal servers. It's job is similar,
** writing dirty pages out of the cache to make room for new pages,
** but the following differences exist:
** Write Behind threads Write Along Threads
** --------------------------- -----------------------------------
** Run as part of same servers Run in a dedicated IO server so that SMP
** that process user threads CPUs are better utilized, and UNIX
** priorities may be used for balancing
**
** Runs on any type of UNIX Will only come up on an SMP machine
** hardware. with 2 or more CPUs.
**
** Contend against user threads If there is an available CPU, only
** from same server, and cause contention is against other service
** context switching overhead. threads in this IO server, eg the
** new ReadAhead threads.
**
** Are woken all at once, in a Are woken up periodically so that
** 'panic' when low on buffers, I/O is spread out more evenly.
** causing spikes in processing.
**
** All threads in all servers The I/O master server is given a
** check all modified buffers, list of databases it is to operate on
** always attempting to 'fix' a and keeps them open. When a buffer
** TBIO and ignoring this buf if otherwise qualifies to be written, if
** cant get TBIO. This is alot the table is not already open (and its
** of thrashing, eg if the same one of the desired database) the table
** tables happen not to be open is opened. Thus there is less senseless
** in all servers. spinning around the cache.
**
** The modified queues are At the cost of some extra cpu time
** scanned, which is smart, but (on the surface), the entire buffer
** requires holding the buffer header array is scanned for candidates.
** manager mutex, which is bad !. This kind of scan can be done without
** This causes dead waits. the buffer manager mutex, so the
** scan does not get in the way of other
** concurrent operations. The mutex is
** taken only when needed to alter the
** status of a chosen buffer.
**
** Because WB threads operate in Because WA can afford to be more
** panic mode, and must write out picky, only buffers that will not
** buffers right away, no regard cause a log force (old lsns) will be
** is given to the fact that a picked to be written. This will
** log force may occur due to a reduce the amount of log records
** new lsn on the buffer. written, LG mutexes etc...
**
**
** The dmc_write_along routine should only be called within a special
** session that is dedicated for this purpose. This routine will not
** return under normal circumstances until server shutdown time.
**
** This routines wakes up periodically, and calls dm0p_write_along(),
** which writes pages in a manner that is less intrusive than the
** dm0p_flush_pages() routines used by normal write behind threads.
** dm0p_write_along() will not request or hold the buffer manager
** mutes while looking for victims, instead it does a sequential
** scan through the main buffer array. Other differences are listed
** in the above chart, and in the function header.
**
** This routine will return only if the timer
** is cancelled by an interrupt. At server shutdown time, the server
** is expected to interrupt all such service threads.
**
** Inputs:
** dmc_cb
** .type Must be set to DMC_CONTROL_CB.
** .length Must be at least sizeof(DMC_CB).
**
** Outputs:
** dmc_cb
** .error.err_code One of the following error numbers.
** E_DB_OK
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEED
** E_DM0062_TRAN_QUOTA_EXCEED
** E_DM0163_WRITE_ALONG_FAILURE
**
** Returns:
** E_DB_OK
** E_DB_FATAL
**
** History:
** 05-Apr-1995 (cohmi01)
** Created, as part of the Manmanx research.
** 10-jan-1996 (dougb)
** To get this file to allow links on VMS platform, use CSswitch()
** not the internal Unix CL routine CL_swuser(). Also, printf()
** should never be called from generic code.
*/
DB_STATUS
dmc_write_along(
DMC_CB *dmc_cb)
{
DMC_CB *dmc = dmc_cb;
DM_SVCB *svcb = dmf_svcb;
DB_TRAN_ID tran_id;
LG_LXID lx_id;
DM0L_ADDDB add_info;
TIMERSTAT stat_block;
i4 lock_list;
i4 len_add_info;
i4 event_mask;
i4 events, wakeup_event;
i4 have_locklist = FALSE;
i4 have_transaction = FALSE;
DB_STATUS status = E_DB_OK;
i4 wbcount = 0;
i4 base_time = 0;
i4 flush_time, new_time;
i4 length;
i4 lgd_status;
#define WA_RUNAGAIN 0 /* indicate no sleep desired */
#define WA_SLEEP 1 /* normal sleep interval if buffers empty */
#define WA_STALL 5 /* sleep interval for log full */
#define WA_YIELD -1 /* yield to another thread */
i4 wa_interval = WA_SLEEP;
i4 numforce = 0;
#define MAX_CLEAN 50
i4 numclean = 0;
STATUS stat;
i4 error;
CL_ERR_DESC sys_err;
DB_OWN_NAME user_name;
LG_DBID lg_dbid;
static i4 nextwa_threadno = 0;
i4 wa_threadno;
i4 duties[] = {DM0P_WA_SINGLE | DM0P_WA_GROUPS,
DM0P_WA_SINGLE,
DM0P_WA_SINGLE,
DM0P_WA_GROUPS};
i4 duty;
#define NUM_DUTY (sizeof(duties)/sizeof (i4))
CLRDBERR(&dmc->error);
wa_threadno = nextwa_threadno++;
duty = duties[wa_threadno % NUM_DUTY];
#ifdef xDEBUG
TRdisplay(
"Starting server Write Along Thread for server id 0x%x, duties 0x%x\n",
dmc_cb->dmc_id, duty );
#endif
/*
** Add write along thread to logging system.
** Write behind thread does not actually open a database, so use
** the LG_NOTDB flag.
*/
STmove((PTR)DB_BWRITALONG_THREAD, ' ', sizeof(add_info.ad_dbname),
(PTR) &add_info.ad_dbname);
MEcopy((PTR)DB_INGRES_NAME, sizeof(add_info.ad_dbowner),
(PTR) &add_info.ad_dbowner);
MEcopy((PTR)"None", 4, (PTR) &add_info.ad_root);
add_info.ad_dbid = 0;
add_info.ad_l_root = 4;
len_add_info = sizeof(add_info) - sizeof(add_info.ad_root) + 4;
stat = LGadd(dmf_svcb->svcb_lctx_ptr->lctx_lgid, LG_NOTDB, (char *)&add_info,
len_add_info, &lg_dbid, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900A_BAD_LOG_DBADD, &sys_err, ULE_LOG, NULL,
(char *)NULL, 0L, (i4 *)NULL, &error, 4, 0,
dmf_svcb->svcb_lctx_ptr->lctx_lgid,
sizeof(add_info.ad_dbname), (PTR) &add_info.ad_dbname,
sizeof(add_info.ad_dbowner), (PTR) &add_info.ad_dbowner,
4, (PTR) &add_info.ad_root);
if (stat == LG_EXCEED_LIMIT)
SETDBERR(&dmc->error, 0, E_DM0062_TRAN_QUOTA_EXCEEDED);
else
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
return (E_DB_ERROR);
}
for(;;)
{
/*
** Begin transaction in order to do LG and LK calls.
** Must specify NOPROTECT transaction so that LG won't pick us
** as a force-abort victim. Also, the Log File BOF can be advanced
** past this transaction's position in the log file, which means that
** the Write Along thread should do no logging nor work that could
** require backout.
*/
STmove((PTR)DB_BWRITALONG_THREAD, ' ', sizeof(DB_OWN_NAME),
(PTR) &user_name);
stat = LGbegin(LG_NOPROTECT, lg_dbid, &tran_id, &lx_id,
sizeof(DB_OWN_NAME), user_name.db_own_name,
(DB_DIS_TRAN_ID*)NULL, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900C_BAD_LOG_BEGIN, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
0, lg_dbid);
if (stat == LG_EXCEED_LIMIT)
SETDBERR(&dmc->error, 0, E_DM0062_TRAN_QUOTA_EXCEEDED);
else
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
break;
}
have_transaction = TRUE;
/*
** Create locklist to use to wait for Write Behind event.
*/
stat = LKcreate_list(LK_NONPROTECT, (i4) 0,
(LK_UNIQUE *)&tran_id, (LK_LLID *)&lock_list, (i4)0,
&sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM901A_BAD_LOCK_CREATE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
if (stat == LK_NOLOCKS)
SETDBERR(&dmc->error, 0, E_DM004B_LOCK_QUOTA_EXCEEDED);
else
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
break;
}
have_locklist = TRUE;
/*
** Now begin timer loop for periodically flushing the buffer manager.
*/
for (;;)
{
if (DMZ_ASY_MACRO(2))
{
new_time = TMsecs();
flush_time = new_time - base_time;
base_time = new_time;
/* Write Write Along thread statistics. */
stat = CSstatistics(&stat_block, 0);
TRdisplay("%22*- DMF Write Along Thread statistics %21*-\n");
TRdisplay(" Write Along wakeups: %d Cpu : %d Dio : %d\n",
wbcount, stat_block.stat_cpu, stat_block.stat_dio);
TRdisplay(" Time to flush pages: %d seconds\n",
flush_time);
TRdisplay("%79*-\n");
}
/*
** Wait for some interval before the next pass over the buffers.
** This should return with "timed-out"; if it returns with
** "interrupted", then the server is being shut down. If it
** returns with any other return code, something is awry.
*/
if (wa_interval == WA_YIELD)
{
/*
** Note: This routine will yield only to other threads at
** the same or higher priority.
*/
CS_swuser();
}
else
if (wa_interval != WA_RUNAGAIN)
{
stat = CSsuspend(CS_TIMEOUT_MASK | CS_INTERRUPT_MASK,
wa_interval, 0);
if (stat == E_CS0008_INTERRUPTED)
{
status = E_DB_OK;
break; /* server shut-down */
}
if (stat != E_CS0009_TIMEOUT)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
break;
}
}
/*
** Check LOGFULL status. We don't execute write behind when in
** logfull to avoid background log forces which wreak havoc on
** the recovery logspace reservation algorithms.
*/
stat = LGshow(LG_S_LGSTS, (PTR)&lgd_status,
sizeof(lgd_status), &length, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM9017_BAD_LOG_SHOW, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
0, LG_S_LGSTS);
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
break;
}
/*
** If logfull continue back to the top of the loop to bypass
** the cache flush and re-wait for timer interval.
** Use MAX_WA_INTERVAL to pause while log-full is resolved.
*/
if (lgd_status & LGD_LOGFULL)
{
wa_interval = WA_STALL;
continue; /* bypassing flush during logfull */
}
wbcount++;
/*
** Flush some dirty pages out of the Buffer Manager.
*/
status = dm0p_write_along(lock_list, (i4)lx_id,
&numforce, duty, &dmc->error);
if (status != E_DB_OK)
{
if (dmc->error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmc->error, 0, NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
}
break;
}
/* determine next wait period based on how busy we were */
/* if we didnt do much, sleep, else ru thru buffers again */
if (numforce == 0)
{
wa_interval = WA_SLEEP; /* things are calm, good nite*/
}
else
{
wa_interval = WA_RUNAGAIN; /* hit the road again */
}
}
break;
}
/*
** Clean up transaction or lock list left hanging around.
*/
if (have_transaction)
{
stat = LGend(lx_id, 0, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900E_BAD_LOG_END, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lx_id);
if ( status == E_DB_OK )
{
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
}
}
have_transaction = FALSE;
}
if (have_locklist)
{
stat = LKrelease(LK_ALL, lock_list, (LK_LKID *)0, (LK_LOCK_KEY *)0,
(LK_VALUE *)0, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM901B_BAD_LOCK_RELEASE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lock_list);
if ( status == E_DB_OK )
{
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
}
}
have_locklist = FALSE;
}
stat = LGremove(lg_dbid, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM9016_BAD_LOG_REMOVE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lg_dbid);
if ( status == E_DB_OK )
{
SETDBERR(&dmc->error, 0, E_DM0163_WRITE_ALONG_FAILURE);
status = E_DB_ERROR;
}
}
/* Write thread statistics. */
stat = CSstatistics(&stat_block, 0);
TRdisplay("\n%22*- DMF Write Along Thread statistics %21*-\n");
TRdisplay(" Write Along wakeup: %d Cpu : %d Dio : %d\n",
wbcount, stat_block.stat_cpu, stat_block.stat_dio);
TRdisplay("%79*-\n");
return (status);
}
/*{
**
** Name: dmc_write_behind_common - the guts of a write behind thread
**
** Description:
**
** The dmc_write_behind routine is used for implementing an asynchronous
** write behind thread. It wakes up whenever signaled by an LK event
** and writes dirty pages out of the cache to make room for new pages
** to be read in.
**
** The dmc_write_behind routine should only be called within a special
** session that is dedicated for this purpose. This routine will not
** return under normal circumstances until server shutdown time.
**
** This routine uses two routines in DM0P to drive the write behind
** thread:
** DM0P_BMFLUSH_WAIT waits for a session in the buffer manager
** to signal the event to wake up the write behind threads. This
** is signalled when some specified percent of the buffer manager
** is filled with dirty pages.
**
** DM0P_FLUSH_PAGES goes through the buffer manager modified queue
** in reverse priority order writing pages until some specified
** percentage of the buffer manager is free.
**
** This routine will return only if the event wait in DM0P_BMFLUSH_WAIT
** is cancelled by an interrupt. At server shutdown time, the server
** is expected to interrupt all the write behind threads.
**
** This common code is executed by both Primary and Cloned
** WriteBehind agents.
**
** Inputs:
** i_am_a_clone FALSE if this is the Primary WB Agent,
** TRUE if a Clone.
** cfa Agent's data.
**
** Outputs:
** dmf_err
** .error.err_code One of the following error numbers.
** E_DB_OK
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEED
** E_DM0062_TRAN_QUOTA_EXCEED
** E_DM0117_WRITE_BEHIND
**
** Returns:
** E_DB_OK
** E_DB_FATAL
**
** History:
** 30-jun-1988 (rogerk)
** Created for Jupiter.
** 30-Jan-1989 (ac)
** Added arguments to LGbegin().
** 15-may-1989 (rogerk)
** Return resource errors if resource limit is exceeded.
** 2-oct-1992 (ed)
** Use DB_MAXNAME to replace hard coded numbers
** - also created defines to replace hard coded character strings
** dependent on DB_MAXNAME
** 18-oct-1993 (rogerk)
** Add check for LOGFULL status. We don't execute write behind when
** in logfull to avoid background log forces which wreak havoc on
** the recovery logspace reservation algorithms.
** 10-oct-93 (swm)
** Bug #56438
** Put LG_DBID into automatic variable lg_dbid rather than overloading
** dmc_cb->dmc_db_id.
** 31-jan-1994 (bryanp) B58380, B58381
** Log LG/LK status code if LG or LK call fails.
** Check return code from CSsuspend.
** 10-Mar-1998 (jenjo02)
** Support for demand-driven WriteBehind threads. Changed prototype
** to pass a boolean indicating whether this is the primary or
** cloned WB thread and a pointer to DB_ERROR instead of a pointer
** to DMC_CB.
** Made this a common function called by Primary and Cloned threads.
*/
static DB_STATUS
dmc_write_behind_common(
i4 i_am_a_clone,
char *cfa,
DB_ERROR *dmf_err)
{
DM_SVCB *svcb = dmf_svcb;
DB_TRAN_ID tran_id;
LG_LXID lx_id;
DM0L_ADDDB add_info;
TIMERSTAT stat_block;
i4 lock_list;
i4 len_add_info;
i4 event_mask;
i4 events, wakeup_event;
i4 have_locklist = FALSE;
i4 have_transaction = FALSE;
i4 lg_added = FALSE;
DB_STATUS status = E_DB_OK;
i4 wbcount = 0;
i4 wait_time = 0;
i4 base_time = 0;
i4 flush_time, new_time;
i4 length;
i4 lgd_status;
STATUS stat;
i4 error;
CL_ERR_DESC sys_err;
DB_OWN_NAME user_name;
LG_DBID lg_dbid;
#ifdef xDEBUG
CS_SID sid;
i4 pid;
PCpid(&pid);
CSget_sid(&sid);
TRdisplay("Starting Write Behind Thread %x in server process %d\n",
sid, pid);
#endif
CLRDBERR(dmf_err);
if (status == E_DB_OK)
{
/*
** Add write behind thread to logging system.
** Write behind thread does not actually open a database, so use
** the LG_NOTDB flag.
*/
STmove((PTR)DB_WRITEBEHIND_THREAD, ' ', sizeof(add_info.ad_dbname),
(PTR) &add_info.ad_dbname);
MEcopy((PTR)DB_INGRES_NAME, sizeof(add_info.ad_dbowner),
(PTR) &add_info.ad_dbowner);
MEcopy((PTR)"None", 4, (PTR) &add_info.ad_root);
add_info.ad_dbid = 0;
add_info.ad_l_root = 4;
len_add_info = sizeof(add_info) - sizeof(add_info.ad_root) + 4;
stat = LGadd(dmf_svcb->svcb_lctx_ptr->lctx_lgid, LG_NOTDB,
(char *)&add_info,
len_add_info, &lg_dbid, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900A_BAD_LOG_DBADD, &sys_err, ULE_LOG, NULL,
(char *)NULL, 0L, (i4 *)NULL, &error, 4, 0,
dmf_svcb->svcb_lctx_ptr->lctx_lgid,
sizeof(add_info.ad_dbname), (PTR) &add_info.ad_dbname,
sizeof(add_info.ad_dbowner), (PTR) &add_info.ad_dbowner,
4, (PTR) &add_info.ad_root);
if (stat == LG_EXCEED_LIMIT)
SETDBERR(dmf_err, 0, E_DM0062_TRAN_QUOTA_EXCEEDED);
else
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
else
lg_added = TRUE;
}
if (status == E_DB_OK)
{
/*
** Begin transaction in order to do LG and LK calls.
** Must specify NOPROTECT transaction so that LG won't pick us
** as a force-abort victim. Also, the Log File BOF can be advanced
** past this transaction's position in the log file, which means that
** the Write Behind thread should do no logging nor work that could
** require backout.
*/
STmove((PTR)DB_WRITEBEHIND_THROWN, ' ', sizeof(DB_OWN_NAME),
(PTR) &user_name);
stat = LGbegin(LG_NOPROTECT, lg_dbid, &tran_id, &lx_id,
sizeof(DB_OWN_NAME), user_name.db_own_name,
(DB_DIS_TRAN_ID*)NULL, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900C_BAD_LOG_BEGIN, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
0, lg_dbid);
if (stat == LG_EXCEED_LIMIT)
SETDBERR(dmf_err, 0, E_DM0062_TRAN_QUOTA_EXCEEDED);
else
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
else
have_transaction = TRUE;
}
if (status == E_DB_OK)
{
/*
** Create locklist to use to wait for Write Behind event.
*/
stat = LKcreate_list(LK_NONPROTECT, (i4) 0,
(LK_UNIQUE *)&tran_id, (LK_LLID *)&lock_list, (i4)0,
&sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM901A_BAD_LOCK_CREATE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
if (stat == LK_NOLOCKS)
SETDBERR(dmf_err, 0, E_DM004B_LOCK_QUOTA_EXCEEDED);
else
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
else
have_locklist = TRUE;
}
if (status == E_DB_OK)
{
/*
** Now begin loop of waiting for Write Behind event and flushing
** the buffer manager.
*/
do
{
if (DMZ_ASY_MACRO(2))
{
new_time = TMsecs();
flush_time = new_time - base_time - wait_time;
base_time = new_time;
/* Write Write Behind thread statistics. */
stat = CSstatistics(&stat_block, 0);
TRdisplay("%22*- DMF Write Behind Thread statistics %21*-\n");
TRdisplay(" Write Behind wakeups: %d Cpu : %d Dio : %d\n",
wbcount, stat_block.stat_cpu, stat_block.stat_dio);
TRdisplay(" Time waiting for event: %d seconds\n",
wait_time);
TRdisplay(" Time to flush pages: %d seconds\n",
flush_time);
TRdisplay("%79*-\n");
}
/*
** Cloned threads don't wait for a signal, they just
** help flush the cache, then go away.
*/
if (i_am_a_clone == FALSE)
{
/*
** Wait for the next signal that the buffer manager needs to have
** pages flushed.
**
** This routine will also clear the event from the previous
** signal.
*/
status = dm0p_wbflush_wait(cfa, lock_list, dmf_err);
if (status != E_DB_OK)
{
/*
** If warning is returned, that's a signal that
** this thread is to terminate.
*/
if (status == E_DB_WARN)
{
status = E_DB_OK;
break;
}
else
{
if (dmf_err->err_code > E_DM_INTERNAL)
{
uleFormat(dmf_err, 0, NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
}
break;
}
}
}
/*
** Check LOGFULL status. We don't execute write behind when in
** logfull to avoid background log forces which wreak havoc on
** the recovery logspace reservation algorithms.
*/
stat = LGshow(LG_S_LGSTS, (PTR)&lgd_status,
sizeof(lgd_status), &length, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM9017_BAD_LOG_SHOW, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
0, LG_S_LGSTS);
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
break;
}
/*
** If logfull, skip the cache flush.
*/
if (lgd_status & LGD_LOGFULL)
{
/*
** Pause for a moment since the write-behind event will likely
** be immediately resignaled. We expect that this 5-second
** wait will return with "timed-out"; if it returns with
** "interrupted", then the server is being shut down. If it
** returns with any other return code, something is awry.
*/
stat = CSsuspend(CS_TIMEOUT_MASK | CS_INTERRUPT_MASK, 5, 0);
if (stat == E_CS0008_INTERRUPTED)
{
status = E_DB_OK;
break;
}
if (stat != E_CS0009_TIMEOUT)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
break;
}
}
else
{
/*
** Flush some dirty pages out of the Buffer Manager.
*/
if (dmf_svcb->svcb_status & SVCB_IOMASTER)
{
/* in IOMASTER server use same func as write-along thread */
i4 numforce;
u_i4 duty = 0xffffffff;
status = dm0p_write_along(lock_list, (i4)lx_id,
&numforce, duty, dmf_err);
}
else
status = dm0p_flush_pages(lock_list, (i4)lx_id,
cfa,
dmf_err);
if (status != E_DB_OK)
{
if (dmf_err->err_code > E_DM_INTERNAL)
{
uleFormat(dmf_err, 0, NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
}
break;
}
}
/*
** If dumping statistics, save time for event to be signaled.
*/
if (DMZ_ASY_MACRO(2))
wait_time = TMsecs() - base_time;
wbcount++;
} while (i_am_a_clone == FALSE);
}
if (i_am_a_clone == FALSE)
{
/* Write Fast Commit thread statistics. */
stat = CSstatistics(&stat_block, 0);
TRdisplay("\n%22*- DMF Write Behind Thread statistics %21*-\n");
TRdisplay(" Write Behind wakeup: %d Cpu : %d Dio : %d\n",
wbcount, stat_block.stat_cpu, stat_block.stat_dio);
TRdisplay("%79*-\n");
}
/*
** Clean up transaction and/or lock list left hanging around.
*/
if (have_transaction)
{
stat = LGend(lx_id, 0, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM900E_BAD_LOG_END, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lx_id);
if ( status == E_DB_OK )
{
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
}
have_transaction = FALSE;
}
if (have_locklist)
{
stat = LKrelease(LK_ALL, lock_list, (LK_LKID *)0, (LK_LOCK_KEY *)0,
(LK_VALUE *)0, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM901B_BAD_LOCK_RELEASE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lock_list);
if ( status == E_DB_OK )
{
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
}
have_locklist = FALSE;
}
if (lg_added)
{
stat = LGremove(lg_dbid, &sys_err);
if (stat != OK)
{
uleFormat(NULL, stat, (CL_ERR_DESC *)&sys_err,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(NULL, E_DM9016_BAD_LOG_REMOVE, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 1, 0, lg_dbid);
if ( status == E_DB_OK )
{
SETDBERR(dmf_err, 0, E_DM0117_WRITE_BEHIND);
status = E_DB_ERROR;
}
}
}
return (status);
}
/*{
** Name: dmt_close - Close a table.
**
** INTERNAL DMF call format: status = dmt_close(&dmt_cb);
**
** EXTERNAL call format: status = dmf_call(DMT_CLOSE,&dmt_cb);
**
** Description:
** This function closes a table that was previously opened.
** All internal control information is released including the
** record access identifier needed to access the table.
**
** Inputs:
** dmt_cb
** .type Must be set to DMT_TABLE_CB.
** .length Must be at least
** sizeof(DMT_TABLE_CB) bytes.
** .dmt_flags_mask Of no consequence, ignored.
** .dmt_record_access_id Identifies open table to close.
**
** Outputs:
** dmt_cb
** .error.err_code One of the following error numbers.
** E_DM0000_OK
** E_DM000B_BAD_CB_LENGTH
** E_DM000C_BAD_CB_TYPE
** E_DM001A_BAD_FLAG
** E_DM002B_BAD_RECORD_ID
** E_DM0042_DEADLOCK
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEEDED
** E_DM004D_LOCK_TIMER_EXPIRED
** E_DM0055_NONEXT
** E_DM0064_USER_ABORT
** E_DM0090_ERROR_CLOSING_TABLE
** E_DM0100_DB_INCONSISTENT
** E_DM010C_TRAN_ABORTED
** E_DM0112_RESOURCE_QUOTA_EXCEEDED
**
** Returns:
** E_DB_OK Function completed normally.
** E_DB_WARN Function completed normally with a
** termination status which is in
** dmt_cb.err_code.
** E_DB_ERROR Function completed abnormally
** with a
** termination status which is in
** dmt_cb.err_code.
** E_DB_FATAL Function completed with a fatal
** error which must be handled
** immediately. The fatal status is in
** dmt_cb.err_code.
** History:
** 01-sep-1985 (jennifer)
** Created new for jupiter.
** 17-dec-1985 (derek)
** Completed code.
** 10-oct-1991 (jnash) merged 14-jun-1991 (Derek)
** Added performance profiling support.
** 13-jun-97 (dilma04)
** Add check for the new DMT_CB flag - DMT_CONSTRAINT.
** 10-nov-1998 (somsa01)
** If the table we are closing contains blob columns, make sure
** we close any extension tables which are open as well.
** (Bug #94114)
** 14-oct-99 (stephenb)
** re-set the SCB_BLOB_OPTIM flag here.
** 10-May-2004 (schka24)
** Remove blob-optim flags from scb and dmtcb.
** Name-decode trick for closing blob etabs didn't work for
** session temp etabs, use new parent-ID in etab TCB.
** 8-Aug-2005 (schka24)
** Ignore session-temp flag now left over from open.
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: Removed silly validation of dmt_flags_mask,
** which aren't used to close a table and are of no import.
** 03-Mar-2010 (jonj)
** SIR 121619 MVCC: Blob support: Consistently reference tcb_extended
** instead of relstat2 & TCB2_EXTENSION.
** 25-Oct-2010 (stial01) (b124640)
dmt_close() get next rcb for this tran BEFORE releasing next_rcb
*/
DB_STATUS
dmt_close(
DMT_CB *dmt_cb)
{
DMT_CB *dmt = dmt_cb;
DMP_RCB *rcb;
i4 error;
DB_STATUS status;
bool internal_error = 0;
CLRDBERR(&dmt->error);
status = E_DB_ERROR;
rcb = (DMP_RCB *)dmt->dmt_record_access_id;
if (dm0m_check((DM_OBJECT *)rcb, (i4)RCB_CB) == E_DB_OK)
{
DML_SCB *scb = rcb->rcb_xcb_ptr->xcb_scb_ptr;
if (rcb->rcb_state & RCB_OPEN)
{
/* Dequeue the RCB from the XCB. */
rcb->rcb_xq_next->rcb_q_prev = rcb->rcb_xq_prev;
rcb->rcb_xq_prev->rcb_q_next = rcb->rcb_xq_next;
#ifdef xDEBUG
if (DMZ_SES_MACRO(21) || DMZ_SES_MACRO(20))
dmd_rstat(rcb);
#endif
/*
** First, see if this table has open extension tables.
** If it does, then close them first.
*/
if (rcb->rcb_tcb_ptr->tcb_rel.relstat2 & TCB2_HAS_EXTENSIONS)
{
DML_XCB *next;
/*
** Scan the queue of open RCB's.
*/
for (next = (DML_XCB*) rcb->rcb_xcb_ptr->xcb_rq_next;
next != (DML_XCB*) &rcb->rcb_xcb_ptr->xcb_rq_next; )
{
DMP_RCB *next_rcb;
/*
** Calculate the RCB starting address.
*/
next_rcb = (DMP_RCB *)(
(char *)next - ((char *)&((DMP_RCB*)0)->rcb_xq_next));
/*
** next == &next_rcb->rcb_xq_next
** (it's pointing inside next_rcb memory)
** get next rcb for this tran BEFORE releasing next_rcb
*/
next = next->xcb_q_next;
/*
** If this table is an extension table, see if its
** base table is the table we are closing. If it is,
** close the extension table as well.
*/
if ( next_rcb->rcb_tcb_ptr->tcb_extended &&
next_rcb->rcb_et_parent_id ==
rcb->rcb_tcb_ptr->tcb_rel.reltid.db_tab_base)
{
DMP_TCB *etab_tcb = next_rcb->rcb_tcb_ptr;
/* Dequeue the RCB from the XCB. */
next_rcb->rcb_xq_next->rcb_q_prev =
next_rcb->rcb_xq_prev;
next_rcb->rcb_xq_prev->rcb_q_next =
next_rcb->rcb_xq_next;
status = dm2t_close(next_rcb, (i4)0, &dmt->error);
if (status != E_DB_OK)
internal_error = 1;
}
if (internal_error)
break;
}
}
/* Call level 2 to close the RCB. */
if (!internal_error)
{
status = dm2t_close(rcb, (i4)0, &dmt->error);
if (status == E_DB_OK)
return (status);
}
}
else
SETDBERR(&dmt->error, 0, E_DM002B_BAD_RECORD_ID);
}
else
SETDBERR(&dmt->error, 0, E_DM002B_BAD_RECORD_ID);
if (dmt->error.err_code > E_DM_INTERNAL)
{
STATUS local_error;
uleFormat(&dmt->error, 0, NULL, ULE_LOG, NULL,
(char * )NULL, 0L, (i4 *)NULL, &local_error, 0);
SETDBERR(&dmt->error, 0, E_DM0090_ERROR_CLOSING_TABLE);
}
return (status);
}
/*{
** Name: dmve_dmu - The recovery of a DMU opration.
**
** Description:
** This routine is used for ROLLBACK recovery of a DMU operation.
**
** DMU operations are not IDEMPOTENT during backout. That means that we
** cannot re-execute abort recovery on operations that occured after a
** DMU operation, if the DMU operation has already been aborted.
**
** This is because the recovery of many operations makes the assumption
** the the basic state of the table (storage structure, number of pages,
** file layout) is the similar to the state it was in when the operation
** was logged.
**
** If we abort the following transaction:
**
** CREATE newtab (a = i4)
** APPEND newtab (a = 1)
**
** And the server doing the abort crashes after aborting the CREATE,
** but before completing the abort, then the RCP will start over with
** recovery on that transaction. But the RCP cannot attempt to re-execute
** the abort of the APPEND statement because the table 'newtab' no longer
** exists. (Worse cases are when the server died while in the middle of
** aborting the CREATE - and left the catalogs in an inconsistent state.)
**
** To solve this, we write a DM0L_DMU log record whenever we issue an
** operation for which recovery is not idempotent. This log record must
** be written AFTER the operation is complete so that recovery is done
** before the operation is recovered (while recovery can still be
** re-executed).
**
** When we encounter a DM0L_DMU log record during abort processing, we
** lay down a CLR record which points to the record before the DMU
** record. If we re-execute abort processing on this transaction,
** we will encounter the CLR and jump over the already backed-out
** operations and begin with recovery on the DMU operation
** itself (which by itself must be idempotent).
**
** Since we must write a CLR record during recovery, LG must make
** sure the is room in the log file to write one CLR (and
** force it to disk) for all DMU operations active in the system.
**
** Inputs:
** dmve_cb
** .dmve_log_rec The dmu operation log record.
** .dmve_action Should only be DMVE_UNDO.
** .dmve_dcb_ptr Pointer to DCB.
** .dmve_tran_id The physical transaction id.
** .dmve_lk_id The transaction lock list id.
** .dmve_log_id The logging system database id.
** .dmve_db_lockmode The lockmode of the database. Should be
** DM2T_X or DM2T_S.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 11-sep-89 (rogerk)
** Created for Terminator.
** 25-sep-1991 (mikem) integrated following change: 20-sep-89 (rogerk)
** When write ABORTSAVE record, use address in dmu_sp_addr.
** 25-sep-1991 (mikem) integrated following change: 10-jan-90 (rogerk)
** If DMVE says the abort is being done by the CSP, then pass
** the DM0L_CLUSTER_REQ flag to dm0l_abortsave.
** 20-oct-1992 (jnash)
** Reduced logging project. Write CLR's instead of abort-save
** log records.
** 18-jan-1993 (rogerk)
** Reduced Logging Project: Removed OFFLINE_CSP flag.
** 15-mar-1993 (jnash)
** Check dmve->dmve_logging to determine if logging required.
** 26-apr-1993 (bryanp)
** 6.5 Cluster support:
** Replace all uses of DM_LOG_ADDR with LG_LA or LG_LSN.
** Remove special checks for DCB_S_CSP, since DCB's built by the
** CSP process no longer get special handling.
** 23-aug-1993 (rogerk)
** Added support for rollforward of CLR records.
** Took out old dm0p_force_pages call (which wrote out records
** updated by the current transaction) and replaced it with a
** dm0p_toss_pages call - which tosses out all pages belonging
** to the dmu table.
** 15-apr-1994 (chiku)
** Bug56702: return logfull indication.
*/
DB_STATUS
dmve_dmu(
DMVE_CB *dmve_cb)
{
DMVE_CB *dmve = dmve_cb;
DM0L_DMU *log_rec = (DM0L_DMU *)dmve_cb->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->dmu_header.lsn;
i4 flag;
i4 error;
DB_STATUS status = E_DB_OK;
CLRDBERR(&dmve->dmve_error);
DMVE_CLEAR_TABINFO_MACRO(dmve);
for (;;)
{
if (log_rec->dmu_header.length > sizeof(DM0L_DMU) ||
log_rec->dmu_header.type != DM0LDMU)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
status = E_DB_ERROR;
break;
}
/*
** Only UNDO modes require any DMU processing.
*/
if ((dmve->dmve_action != DMVE_UNDO) &&
((log_rec->dmu_header.flags & DM0L_CLR) == 0))
{
return (E_DB_OK);
}
/*
** Toss any modified pages for this table from the buffer manager
** as we are about to rename or possible remove the files associated
** with it. (DMU records are usually logged in conjunction with
** file rename/swap operations).
*/
dm0p_toss_pages(dmve->dmve_dcb_ptr->dcb_id,
log_rec->dmu_tabid.db_tab_base,
dmve->dmve_lk_id, dmve->dmve_log_id, (i4) TRUE);
/*
** Write CLR record that specifies that we have aborted
** the transaction up to this log record.
**
** DMU log records are written as NONREDO operations to ensure
** that redo cannot be attempted using the old (about to be renamed)
** file structures. (The nonredo status is appended in the dm0l_dmu
** routine).
*/
if ((dmve->dmve_logging) &&
((log_rec->dmu_header.flags & DM0L_CLR) == 0))
{
status = dm0l_dmu(dmve->dmve_log_id,
(log_rec->dmu_header.flags | DM0L_CLR),
&log_rec->dmu_tabid, &log_rec->dmu_tblname,
&log_rec->dmu_tblowner, log_rec->dmu_operation,
log_lsn, &dmve->dmve_error);
if (status != E_DB_OK)
{
/*
* Bug56702: returned logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
break;
}
}
return(E_DB_OK);
}
if (dmve->dmve_error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM9622_DMVE_DMU);
}
return(E_DB_ERROR);
}
DB_STATUS
dmu_modify(DMU_CB *dmu_cb)
{
DM_SVCB *svcb = dmf_svcb;
DMU_CB *dmu = dmu_cb;
DML_XCB *xcb;
DML_ODCB *odcb;
DM2U_MOD_CB local_mcb, *mcb = &local_mcb;
i4 recovery;
i4 truncate;
i4 duplicates;
i4 i,j;
i4 indicator;
i4 error, local_error;
DB_STATUS status;
bool bad_loc;
i4 blob_add_extend = 0;
bool used_default_page_size = TRUE;
i4 page_size;
i4 verify_options;
i4 mask;
i4 has_extensions = 0;
DB_OWN_NAME table_owner;
DB_TAB_NAME table_name;
bool got_action;
bool is_table_debug;
bool reorg;
CLRDBERR(&dmu->error);
/* Any modify should make table recovery disallowed except for the
** alter_status options which change logical, physical consistency
** and table recovery bit itself
*/
mcb->mcb_mod_options2 = DM2U_2_TBL_RECOVERY_DEFAULT;
do
{
/* Check for bad flags. */
mask = ~(DMU_VGRANT_OK | DMU_INTERNAL_REQ | DMU_RETINTO
| DMU_PARTITION | DMU_MASTER_OP | DMU_ONLINE_START | DMU_ONLINE_END
| DMU_NO_PAR_INDEX | DMU_PIND_CHAINED | DMU_NODEPENDENCY_CHECK);
if ( (dmu->dmu_flags_mask & mask) != 0)
{
SETDBERR(&dmu->error, 0, E_DM001A_BAD_FLAG);
break;
}
/* Validate the transaction id. */
xcb = (DML_XCB *)dmu->dmu_tran_id;
if (dm0m_check((DM_OBJECT *)xcb, (i4)XCB_CB) != E_DB_OK)
{
SETDBERR(&dmu->error, 0, E_DM003B_BAD_TRAN_ID);
break;
}
/* Check for external interrupts */
if ( xcb->xcb_scb_ptr->scb_ui_state )
dmxCheckForInterrupt(xcb, &error);
if ( xcb->xcb_state )
{
if (xcb->xcb_state & XCB_USER_INTR)
{
SETDBERR(&dmu->error, 0, E_DM0065_USER_INTR);
break;
}
if (xcb->xcb_state & XCB_FORCE_ABORT)
{
SETDBERR(&dmu->error, 0, E_DM010C_TRAN_ABORTED);
break;
}
if (xcb->xcb_state & XCB_ABORT)
{
SETDBERR(&dmu->error, 0, E_DM0064_USER_ABORT);
break;
}
}
/* Check the database identifier. */
odcb = (DML_ODCB *)dmu->dmu_db_id;
if (dm0m_check((DM_OBJECT *)odcb, (i4)ODCB_CB) != E_DB_OK)
{
SETDBERR(&dmu->error, 0, E_DM0010_BAD_DB_ID);
break;
}
mcb->mcb_db_lockmode = DM2T_X;
/* Check that this is a update transaction on the database
** that can be updated. */
if (odcb != xcb->xcb_odcb_ptr)
{
SETDBERR(&dmu->error, 0, E_DM005D_TABLE_ACCESS_CONFLICT);
break;
}
/* Prime the MCB */
mcb->mcb_dcb = odcb->odcb_dcb_ptr;
mcb->mcb_xcb = xcb;
mcb->mcb_tbl_id = &dmu->dmu_tbl_id;
mcb->mcb_omcb = (DM2U_OMCB*)NULL;
mcb->mcb_dmu = dmu;
mcb->mcb_structure = 0;
mcb->mcb_i_fill = 0;
mcb->mcb_l_fill = 0;
mcb->mcb_d_fill = 0;
mcb->mcb_unique = FALSE;
mcb->mcb_compressed = TCB_C_NONE;
mcb->mcb_index_compressed = FALSE;
mcb->mcb_temporary = FALSE;
mcb->mcb_merge = FALSE;
mcb->mcb_clustered = FALSE;
mcb->mcb_modoptions = 0;
mcb->mcb_min_pages = 0;
mcb->mcb_max_pages = 0;
mcb->mcb_allocation = 0;
mcb->mcb_extend = 0;
mcb->mcb_page_type = TCB_PG_INVALID;
mcb->mcb_page_size = svcb->svcb_page_size;
mcb->mcb_tup_info = &dmu->dmu_tup_cnt;
mcb->mcb_reltups = 0;
mcb->mcb_tab_name = &table_name;
mcb->mcb_tab_owner = &table_owner;
mcb->mcb_has_extensions = &has_extensions;
mcb->mcb_relstat2 = 0;
mcb->mcb_flagsmask = dmu->dmu_flags_mask;
mcb->mcb_tbl_pri = 0;
mcb->mcb_rfp_entry = (DM2U_RFP_ENTRY*)NULL;
mcb->mcb_new_part_def = (DB_PART_DEF*)dmu->dmu_part_def;
mcb->mcb_new_partdef_size = dmu->dmu_partdef_size;
mcb->mcb_verify = 0;
dmu->dmu_tup_cnt = 0;
truncate = 0;
reorg = FALSE;
duplicates = -1;
verify_options = 0;
got_action = FALSE;
/* FIXME better messages (in general) */
/* If there's a partdef it has to be one-piece, else bad param */
if (dmu->dmu_part_def != NULL
&& dmu->dmu_part_def->ndims > 0
&& (dmu->dmu_part_def->part_flags & DB_PARTF_ONEPIECE) == 0)
{
SETDBERR(&dmu->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
/* Disassemble the modify action.
** FIXME this used to be buried in the characteristics array.
** It would make much more sense to just carry the action
** code through, but that will have to wait for another day.
*/
got_action = FALSE;
switch (dmu->dmu_action)
{
case DMU_ACT_STORAGE:
if (BTtest(DMU_STRUCTURE, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_structure = dmu->dmu_chars.dmu_struct;
}
break;
case DMU_ACT_ADDEXTEND:
got_action = TRUE;
mcb->mcb_mod_options2 |= DM2U_2_ADD_EXTEND;
break;
case DMU_ACT_ENCRYPT:
got_action = TRUE;
mcb->mcb_mod_options2 |= DM2U_2_ENCRYPT;
break;
case DMU_ACT_LOG_CONSISTENT:
if (BTtest(DMU_ACTION_ONOFF, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_mod_options2 &= ~DM2U_2_TBL_RECOVERY_DEFAULT;
if ( dmu->dmu_chars.dmu_flags & DMU_FLAG_ACTON )
mcb->mcb_mod_options2 |= DM2U_2_LOG_CONSISTENT;
else
mcb->mcb_mod_options2 |= DM2U_2_LOG_INCONSISTENT;
}
break;
case DMU_ACT_MERGE:
got_action = TRUE;
mcb->mcb_merge = TRUE;
break;
case DMU_ACT_PERSISTENCE:
if (BTtest(DMU_PERSISTS_OVER_MODIFIES, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_mod_options2 |= (dmu->dmu_chars.dmu_flags & DMU_FLAG_PERSISTENCE) ?
DM2U_2_PERSISTS_OVER_MODIFIES :
DM2U_2_NOPERSIST_OVER_MODIFIES;
}
break;
case DMU_ACT_PHYS_CONSISTENT:
if (BTtest(DMU_ACTION_ONOFF, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_mod_options2 &= ~DM2U_2_TBL_RECOVERY_DEFAULT;
if ( dmu->dmu_chars.dmu_flags & DMU_FLAG_ACTON )
mcb->mcb_mod_options2 |= DM2U_2_PHYS_CONSISTENT;
else
mcb->mcb_mod_options2 |= DM2U_2_PHYS_INCONSISTENT;
}
break;
case DMU_ACT_PRIORITY:
if (BTtest(DMU_TABLE_PRIORITY, dmu->dmu_chars.dmu_indicators))
got_action = TRUE;
/* flag setting when we hit the priority char */
break;
case DMU_ACT_READONLY:
if (BTtest(DMU_ACTION_ONOFF, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
if ( dmu->dmu_chars.dmu_flags & DMU_FLAG_ACTON )
mcb->mcb_mod_options2 |= DM2U_2_READONLY;
else
mcb->mcb_mod_options2 |= DM2U_2_NOREADONLY;
}
break;
case DMU_ACT_REORG:
got_action = TRUE;
reorg = TRUE;
break;
case DMU_ACT_TABLE_RECOVERY:
if (BTtest(DMU_ACTION_ONOFF, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_mod_options2 &= ~DM2U_2_TBL_RECOVERY_DEFAULT;
if ( dmu->dmu_chars.dmu_flags & DMU_FLAG_ACTON )
mcb->mcb_mod_options2 |= DM2U_2_TBL_RECOVERY_ALLOWED;
else
mcb->mcb_mod_options2 |= DM2U_2_TBL_RECOVERY_DISALLOWED;
}
break;
case DMU_ACT_TRUNC:
got_action = TRUE;
truncate++;
break;
case DMU_ACT_USCOPE:
if (BTtest(DMU_STATEMENT_LEVEL_UNIQUE, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_mod_options2 |= DM2U_2_STATEMENT_LEVEL_UNIQUE;
}
break;
case DMU_ACT_VERIFY:
if (BTtest(DMU_VACTION, dmu->dmu_chars.dmu_indicators))
{
got_action = TRUE;
mcb->mcb_verify = dmu->dmu_chars.dmu_vaction;
}
break;
} /* switch */
if (! got_action)
{
SETDBERR(&dmu->error, 0, E_DM000E_BAD_CHAR_VALUE);
break;
}
/* Disassemble the characteristics.
** FIXME probably better to just carry it through, but one step
** at a time!
*/
indicator = -1;
while ((indicator = BTnext(indicator, dmu->dmu_chars.dmu_indicators, DMU_CHARIND_LAST)) != -1)
{
switch (indicator)
{
case DMU_ACTION_ONOFF:
case DMU_STRUCTURE:
/* Already picked it up, just skip on */
continue;
case DMU_IFILL:
mcb->mcb_i_fill = dmu->dmu_chars.dmu_nonleaff;
if (mcb->mcb_i_fill > 100)
mcb->mcb_i_fill = 100;
continue;
case DMU_LEAFFILL:
mcb->mcb_l_fill = dmu->dmu_chars.dmu_leaff;
if (mcb->mcb_l_fill > 100)
mcb->mcb_l_fill = 100;
continue;
case DMU_DATAFILL:
mcb->mcb_d_fill = dmu->dmu_chars.dmu_fillfac;
if (mcb->mcb_d_fill > 100)
mcb->mcb_d_fill = 100;
continue;
case DMU_PAGE_SIZE:
used_default_page_size = FALSE;
mcb->mcb_page_size = dmu->dmu_chars.dmu_page_size;
if (mcb->mcb_page_size != 2048 && mcb->mcb_page_size != 4096 &&
mcb->mcb_page_size != 8192 && mcb->mcb_page_size != 16384 &&
mcb->mcb_page_size != 32768 && mcb->mcb_page_size != 65536)
{
SETDBERR(&dmu->error, indicator, E_DM000E_BAD_CHAR_VALUE);
break;
}
else if (!dm0p_has_buffers(mcb->mcb_page_size))
{
SETDBERR(&dmu->error, 0, E_DM0157_NO_BMCACHE_BUFFERS);
break;
}
else
{
continue;
}
case DMU_MINPAGES:
mcb->mcb_min_pages = dmu->dmu_chars.dmu_minpgs;
continue;
case DMU_MAXPAGES:
mcb->mcb_max_pages = dmu->dmu_chars.dmu_maxpgs;
continue;
case DMU_UNIQUE:
mcb->mcb_unique = TRUE;
continue;
case DMU_DCOMPRESSION:
/* Translate DMU_xxx to TCB compression types */
if (dmu->dmu_chars.dmu_dcompress == DMU_COMP_ON)
mcb->mcb_compressed = TCB_C_DEFAULT;
else if (dmu->dmu_chars.dmu_dcompress == DMU_COMP_HI)
mcb->mcb_compressed = TCB_C_HICOMPRESS;
continue;
case DMU_KCOMPRESSION:
mcb->mcb_index_compressed =
(dmu->dmu_chars.dmu_kcompress != DMU_COMP_OFF);
continue;
case DMU_TEMP_TABLE:
mcb->mcb_temporary = TRUE;
continue;
case DMU_RECOVERY:
recovery = (dmu->dmu_chars.dmu_flags & DMU_FLAG_RECOVERY) != 0;
if (recovery)
{
/* recovery isn't currently supported */
SETDBERR(&dmu->error, indicator, E_DM000D_BAD_CHAR_ID);
break;
}
continue;
case DMU_DUPLICATES:
duplicates = 0;
if (dmu->dmu_chars.dmu_flags & DMU_FLAG_DUPS)
duplicates = 1;
continue;
case DMU_ALLOCATION:
mcb->mcb_allocation = dmu->dmu_chars.dmu_alloc;
continue;
case DMU_EXTEND:
mcb->mcb_extend = dmu->dmu_chars.dmu_extend;
continue;
case DMU_VACTION:
/* Already got it, just skip on */
continue;
case DMU_VOPTION:
verify_options = dmu->dmu_chars.dmu_voption;
continue;
case DMU_STATEMENT_LEVEL_UNIQUE:
if (dmu->dmu_chars.dmu_flags & DMU_FLAG_UNIQUE_STMT)
mcb->mcb_relstat2 |= TCB_STATEMENT_LEVEL_UNIQUE;
continue;
case DMU_PERSISTS_OVER_MODIFIES:
if (dmu->dmu_chars.dmu_flags & DMU_FLAG_PERSISTENCE)
mcb->mcb_relstat2 |= TCB_PERSISTS_OVER_MODIFIES;
continue;
case DMU_SYSTEM_GENERATED:
mcb->mcb_relstat2 |= TCB_SYSTEM_GENERATED;
continue;
case DMU_SUPPORTS_CONSTRAINT:
mcb->mcb_relstat2 |= TCB_SUPPORTS_CONSTRAINT;
continue;
case DMU_NOT_UNIQUE:
mcb->mcb_relstat2 |= TCB_NOT_UNIQUE;
continue;
case DMU_NOT_DROPPABLE:
mcb->mcb_relstat2 |= TCB_NOT_DROPPABLE;
continue;
case DMU_ROW_SEC_AUDIT:
mcb->mcb_relstat2 |= TCB_ROW_AUDIT;
continue;
case DMU_TABLE_PRIORITY:
mcb->mcb_tbl_pri = dmu->dmu_chars.dmu_cache_priority;
if (mcb->mcb_tbl_pri < 0 || mcb->mcb_tbl_pri > DB_MAX_TABLEPRI)
{
SETDBERR(&dmu->error, indicator, E_DM000E_BAD_CHAR_VALUE);
break;
}
/*
** DMU_TABLE_PRIORITY is set if priority came from WITH clause.
** DMU_TO_TABLE_PRIORITY is set if priority came from MODIFY TO clause.
*/
if (dmu->dmu_action != DMU_ACT_PRIORITY)
mcb->mcb_mod_options2 |= DM2U_2_TABLE_PRIORITY;
else
mcb->mcb_mod_options2 |= DM2U_2_TO_TABLE_PRIORITY;
continue;
case DMU_BLOBEXTEND:
blob_add_extend = dmu->dmu_chars.dmu_blobextend;
continue;
case DMU_CLUSTERED:
mcb->mcb_clustered = (dmu->dmu_chars.dmu_flags & DMU_FLAG_CLUSTERED) != 0;
continue;
case DMU_CONCURRENT_UPDATES:
/* Translate from PSF flag to DMU internal flag */
if (dmu->dmu_chars.dmu_flags & DMU_FLAG_CONCUR_U)
mcb->mcb_flagsmask |= DMU_ONLINE_START;
continue;
default:
/* Ignore anything else, might be for CREATE, who knows */
continue;
}
break;
}
/*
** If no page size specified, set page_size to zero
** In this case the current page size will be used
*/
if (used_default_page_size)
mcb->mcb_page_size = 0;
/* Save a local copy for dmpe_modify, since dm2u_modify can alter mcb */
page_size = mcb->mcb_page_size;
if (mcb->mcb_structure == TCB_HEAP)
{
if (mcb->mcb_d_fill == 0)
mcb->mcb_d_fill = DM_F_HEAP;
}
else if (mcb->mcb_structure == TCB_ISAM)
{
if (mcb->mcb_i_fill == 0)
mcb->mcb_i_fill = DM_FI_ISAM;
if (mcb->mcb_d_fill == 0)
{
if (mcb->mcb_compressed != TCB_C_NONE)
mcb->mcb_d_fill = DM_F_CISAM;
else
mcb->mcb_d_fill = DM_F_ISAM;
}
}
else if (mcb->mcb_structure == TCB_HASH)
{
if (mcb->mcb_d_fill == 0)
{
if (mcb->mcb_compressed != TCB_C_NONE)
mcb->mcb_d_fill = DM_F_CHASH;
else
mcb->mcb_d_fill = DM_F_HASH;
}
if (mcb->mcb_min_pages == 0)
{
if (mcb->mcb_compressed != TCB_C_NONE)
mcb->mcb_min_pages = 1;
else
mcb->mcb_min_pages = 10;
/* If user specified max pages, don't set minpages higher */
if (mcb->mcb_min_pages > mcb->mcb_max_pages && mcb->mcb_max_pages != 0)
mcb->mcb_min_pages = mcb->mcb_max_pages;
}
if (mcb->mcb_max_pages == 0)
mcb->mcb_max_pages = 8388607;
}
else if (mcb->mcb_structure == TCB_BTREE || mcb->mcb_merge)
{
if (DMZ_AM_MACRO(16) && !mcb->mcb_temporary)
{
/* DM616 -- forces index compression to be used: */
mcb->mcb_index_compressed = TRUE;
}
if (mcb->mcb_i_fill == 0)
mcb->mcb_i_fill = DM_FI_BTREE;
if (mcb->mcb_l_fill == 0)
mcb->mcb_l_fill = DM_FL_BTREE;
if (mcb->mcb_d_fill == 0)
{
if (mcb->mcb_compressed != TCB_C_NONE)
mcb->mcb_d_fill = DM_F_CBTREE;
else
mcb->mcb_d_fill = DM_F_BTREE;
}
}
else if (truncate)
{
if (mcb->mcb_d_fill == 0)
mcb->mcb_d_fill = DM_F_HEAP;
}
if (mcb->mcb_structure == TCB_HASH && mcb->mcb_min_pages > mcb->mcb_max_pages)
{
SETDBERR(&dmu->error, 0, E_DM000D_BAD_CHAR_ID);
break;
}
mcb->mcb_kcount = dmu->dmu_key_array.ptr_in_count;
mcb->mcb_key = (DMU_KEY_ENTRY**) dmu->dmu_key_array.ptr_address;
if (mcb->mcb_kcount && (mcb->mcb_key == (DMU_KEY_ENTRY**)NULL ||
dmu->dmu_key_array.ptr_size != sizeof(DMU_KEY_ENTRY)))
{
SETDBERR(&dmu->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
if (truncate)
{
mcb->mcb_kcount = 0;
mcb->mcb_modoptions |= DM2U_TRUNCATE;
}
if (duplicates == 1)
mcb->mcb_modoptions |= DM2U_DUPLICATES;
else if (duplicates == 0)
mcb->mcb_modoptions |= DM2U_NODUPLICATES;
/* else duplicates == -1, set neither flag */
if (reorg)
mcb->mcb_modoptions |= DM2U_REORG;
/* CLUSTERED implies and requires Unique */
if ( mcb->mcb_clustered && mcb->mcb_structure == TCB_BTREE )
mcb->mcb_unique = TRUE;
else
mcb->mcb_clustered = FALSE;
if (mcb->mcb_verify)
{
if (verify_options == 0)
{
/* Apply defaults. */
switch (mcb->mcb_verify)
{
case DMU_V_VERIFY:
verify_options = DMU_T_LINK | DMU_T_RECORD | DMU_T_ATTRIBUTE;
break;
case DMU_V_REPAIR:
case DMU_V_DEBUG:
verify_options = DMU_T_BITMAP;
break;
case DMU_V_PATCH:
case DMU_V_FPATCH:
break;
}
}
/* Shift modifiers into place */
mcb->mcb_verify |= (verify_options << DM1U_MODSHIFT);
}
is_table_debug = ((mcb->mcb_verify & DM1U_OPMASK) == DM1U_DEBUG);
/* Check the location names for duplicates, too many. */
mcb->mcb_location = (DB_LOC_NAME*)NULL;
mcb->mcb_l_count = 0;
if (dmu->dmu_location.data_address &&
(dmu->dmu_location.data_in_size >= sizeof(DB_LOC_NAME)) &&
mcb->mcb_temporary == FALSE)
{
mcb->mcb_location = (DB_LOC_NAME *) dmu->dmu_location.data_address;
mcb->mcb_l_count = dmu->dmu_location.data_in_size/sizeof(DB_LOC_NAME);
if (mcb->mcb_l_count > DM_LOC_MAX)
{
SETDBERR(&dmu->error, 0, E_DM0071_LOCATIONS_TOO_MANY);
break;
}
bad_loc = FALSE;
for (i = 0; i < mcb->mcb_l_count; i++)
{
for (j = 0; j < i; j++)
{
/*
** Compare this location name against other
** already given, they cannot be the same.
*/
if (MEcmp(mcb->mcb_location[j].db_loc_name,
mcb->mcb_location[i].db_loc_name,
sizeof(DB_LOC_NAME)) == 0 )
{
SETDBERR(&dmu->error, i, E_DM001E_DUP_LOCATION_NAME);
bad_loc = TRUE;
break;
}
}
if (bad_loc == TRUE)
break;
}
if (bad_loc == TRUE)
break;
}
else
{
/* There must a location list if you are reorganizing
** to a different number of locations.
*/
if (reorg)
{
if (dmu->dmu_location.data_address &&
dmu->dmu_location.data_in_size)
SETDBERR(&dmu->error, 0, E_DM001F_LOCATION_LIST_ERROR);
else
SETDBERR(&dmu->error, 0, E_DM0072_NO_LOCATION);
break;
}
}
mcb->mcb_partitions = (DMU_PHYPART_CHAR*)NULL;
mcb->mcb_nparts = 0;
if ( dmu->dmu_ppchar_array.data_address &&
dmu->dmu_ppchar_array.data_in_size >= sizeof(DMU_PHYPART_CHAR) )
{
mcb->mcb_partitions = (DMU_PHYPART_CHAR*)dmu->dmu_ppchar_array.data_address;
mcb->mcb_nparts = dmu->dmu_ppchar_array.data_in_size
/ sizeof(DMU_PHYPART_CHAR);
}
if ((xcb->xcb_x_type & XCB_RONLY) && !is_table_debug)
{
SETDBERR(&dmu->error, 0, E_DM006A_TRAN_ACCESS_CONFLICT);
break;
}
/*
** If this is the first write operation for this transaction,
** then we need to write the begin transaction record.
*/
if ((xcb->xcb_flags & XCB_DELAYBT) != 0 && mcb->mcb_temporary == FALSE
&& !is_table_debug)
{
status = dmxe_writebt(xcb, TRUE, &dmu->error);
if (status != E_DB_OK)
{
xcb->xcb_state |= XCB_TRANABORT;
break;
}
}
/* Calls the physical layer to process the rest of the modify */
status = dm2u_modify(mcb, &dmu->error);
if (status == E_DB_OK && has_extensions)
{
if ((mcb->mcb_mod_options2 & DM2U_2_ADD_EXTEND) && blob_add_extend == 0)
status = E_DB_OK;
else
{
/* FIX ME make modify etabs optional !! */
/* Add flag to modify top make modify etabs optional */
/* Add sysmod dbname tablename blob-column-name */
#ifdef xDEBUG
TRdisplay("Modify etabs for %~t %~t\n",
sizeof(DB_TAB_NAME), table_name.db_tab_name,
sizeof(DB_OWN_NAME), table_owner.db_own_name);
#endif
status = dmpe_modify(dmu, odcb->odcb_dcb_ptr, xcb,
&dmu->dmu_tbl_id, mcb->mcb_db_lockmode, mcb->mcb_temporary,
truncate, (i4)0, blob_add_extend, &dmu->error);
}
}
/* Audit successful MODIFY/PATCH of TABLE. */
if ( status == E_DB_OK && dmf_svcb->svcb_status & SVCB_C2SECURE )
{
i4 msgid;
i4 access = SXF_A_SUCCESS;
if ((mcb->mcb_verify & DM1U_OPMASK) == DM1U_PATCH ||
(mcb->mcb_verify & DM1U_OPMASK) == DM1U_FPATCH)
{
access |= SXF_A_ALTER;
msgid = I_SX271A_TABLE_PATCH;
}
else
{
access |= SXF_A_MODIFY;
msgid = I_SX270F_TABLE_MODIFY;
}
/*
** Audit success
*/
status = dma_write_audit(
SXF_E_TABLE,
access,
table_name.db_tab_name, /* Table/view name */
sizeof(table_name.db_tab_name), /* Table/view name */
&table_owner, /* Table/view owner */
msgid,
FALSE, /* Not force */
&dmu->error, NULL);
}
if (status == E_DB_OK)
{
/* If modify to reorg or merge then return no tuple count info. */
if (reorg || (mcb->mcb_merge) || (mcb->mcb_verify != 0))
{
dmu->dmu_tup_cnt = DM_NO_TUPINFO;
}
return (E_DB_OK);
}
else
{
if (dmu->error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmu->error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char * )NULL, (i4)0, (i4 *)NULL, &local_error, 0);
SETDBERR(&dmu->error, 0, E_DM0091_ERROR_MODIFYING_TABLE);
}
switch (dmu->error.err_code)
{
case E_DM004B_LOCK_QUOTA_EXCEEDED:
case E_DM0112_RESOURCE_QUOTA_EXCEED:
case E_DM0091_ERROR_MODIFYING_TABLE:
case E_DM009B_ERROR_CHK_PATCH_TABLE:
case E_DM0045_DUPLICATE_KEY:
case E_DM0137_GATEWAY_ACCESS_ERROR:
case E_DM006A_TRAN_ACCESS_CONFLICT:
xcb->xcb_state |= XCB_STMTABORT;
break;
case E_DM0042_DEADLOCK:
case E_DM004A_INTERNAL_ERROR:
case E_DM0100_DB_INCONSISTENT:
xcb->xcb_state |= XCB_TRANABORT;
break;
case E_DM0065_USER_INTR:
xcb->xcb_state |= XCB_USER_INTR;
break;
case E_DM010C_TRAN_ABORTED:
xcb->xcb_state |= XCB_FORCE_ABORT;
break;
case E_DM007D_BTREE_BAD_KEY_LENGTH:
dmu->dmu_tup_cnt = dmu->dmu_tup_cnt; /* same for now */
default:
break;
}
}
} while (FALSE);
if (dmu->error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmu->error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char * )NULL, (i4)0, (i4 *)NULL, &local_error, 0);
SETDBERR(&dmu->error, 0, E_DM0091_ERROR_MODIFYING_TABLE);
}
return (E_DB_ERROR);
}
DB_STATUS
dmx_secure(
DMX_CB *dmx_cb)
{
DML_SCB *scb;
DMX_CB *dmx = dmx_cb;
DML_XCB *xcb;
DB_STATUS status = E_DB_ERROR;
i4 error,local_error;
DMP_RCB *rcb;
CL_ERR_DESC sys_err;
STATUS cl_stat;
i4 qnext;
DMC_REPQ *repq = (DMC_REPQ *)(Dmc_rep + 1);
i4 rep_iq_lock;
i4 rep_maxlocks;
DB_TAB_TIMESTAMP timestamp;
LK_EVENT lk_event;
CLRDBERR(&dmx->error);
for (;;)
{
xcb = (DML_XCB *)dmx->dmx_tran_id;
if (dm0m_check((DM_OBJECT *)xcb, (i4)XCB_CB) != E_DB_OK)
{
SETDBERR(&dmx->error, 0, E_DM003B_BAD_TRAN_ID);
break;
}
if (dmx->dmx_dis_tran_id.db_dis_tran_id_type == 0)
{
SETDBERR(&dmx->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
if (xcb->xcb_state & (XCB_STMTABORT | XCB_TRANABORT))
{
SETDBERR(&dmx->error, 0, E_DM0064_USER_ABORT);
break;
}
if (xcb->xcb_state & XCB_WILLING_COMMIT)
{
SETDBERR(&dmx->error, 0, E_DM0132_ILLEGAL_STMT);
break;
}
scb = xcb->xcb_scb_ptr;
/* Clear user interrupt state in SCB. */
scb->scb_ui_state &= ~SCB_USER_INTR;
/* Clear the force abort state of the SCB. */
if (xcb->xcb_state & XCB_FORCE_ABORT)
scb->scb_ui_state &= ~SCB_FORCE_ABORT;
/*
** If the transaction has written no Begin Transaction record,
** then force one to the log file now.
*/
if (xcb->xcb_flags & XCB_DELAYBT)
{
status = dmxe_writebt(xcb, TRUE, &dmx->error);
if (status != E_DB_OK)
{
xcb->xcb_state |= XCB_TRANABORT;
break;
}
}
/*
** If the database is replicated, the input queue must
** be processed before putting the transaction in a
** willing commit state.
**
** All of this transaction's tables, including those
** associated with replication, must be closed and
** their pages tossed from the cache.
**
** This is the same processing as that for a
** "normal" commit.
*/
if ((xcb->xcb_odcb_ptr->odcb_dcb_ptr->dcb_status & DCB_S_REPLICATE) &&
(DMZ_SES_MACRO(32) == 0 || dmd_reptrace() == FALSE) &&
((xcb->xcb_rep_input_q == NULL) ||
(xcb->xcb_rep_input_q == (DMP_RCB *)-1)))
{
if (dmf_svcb->svcb_rep_iqlock == DMC_C_ROW)
rep_iq_lock = DM2T_RIX;
else if (dmf_svcb->svcb_rep_iqlock == DMC_C_TABLE)
rep_iq_lock = DM2T_X;
else
rep_iq_lock = DM2T_IX;
/* allow a minimum maxlocks value of 50 ... */
if (dmf_svcb->svcb_rep_dtmaxlock > 50)
rep_maxlocks = dmf_svcb->svcb_rep_dtmaxlock;
/* ...but default to 100 */
else if (dmf_svcb->svcb_lk_maxlocks > 100)
rep_maxlocks = dmf_svcb->svcb_lk_maxlocks;
else
rep_maxlocks = 100;
status = dm2t_open(xcb->xcb_odcb_ptr->odcb_dcb_ptr,
&xcb->xcb_odcb_ptr->odcb_dcb_ptr->rep_input_q, rep_iq_lock,
DM2T_UDIRECT, DM2T_A_WRITE, (i4)0, rep_maxlocks,
(i4)0, xcb->xcb_log_id, xcb->xcb_lk_id, (i4)0,
(i4)0, (i4)0, &(xcb->xcb_tran_id), ×tamp,
&(xcb->xcb_rep_input_q), (DML_SCB *)0, &dmx->error);
if (status != E_DB_OK)
{
xcb->xcb_state |= XCB_TRANABORT;
break;
}
}
/*
** clean up replication input queue RCB
*/
if (xcb->xcb_rep_input_q)
{
HRSYSTIME curtime;
bool list_ok = TRUE;
i4 semaphore_status = -1;
(VOID)TMhrnow(&curtime);
/* If rep_txq_size=0, Dmc_rep will be NULL and we have to
** do the distribution synchronously now (kibro01) b118566
*/
if (Dmc_rep == NULL)
list_ok = FALSE;
/*
** if we had the input queue open, then we need to distribute
*/
if (list_ok)
{
semaphore_status = CSp_semaphore(TRUE, &Dmc_rep->rep_sem);
if (semaphore_status == E_DB_OK)
{
qnext = (Dmc_rep->queue_start == Dmc_rep->queue_end &&
repq[Dmc_rep->queue_start].active == 0 &&
repq[Dmc_rep->queue_start].tx_id == 0) ?
Dmc_rep->queue_end :
(Dmc_rep->queue_end + 1) % Dmc_rep->seg_size;
if (qnext == Dmc_rep->queue_start &&
Dmc_rep->queue_start != Dmc_rep->queue_end)
{
list_ok = FALSE;
}
} else
{
TRdisplay("%@ dmxsecure() CSp_semaphore failed %d\n",
semaphore_status);
/* Error getting the semaphore, can't rely on the list */
list_ok = FALSE;
}
}
if (!list_ok)
{
/* queue is full, print warning and distribute manually */
if (semaphore_status == E_DB_OK)
CSv_semaphore(&Dmc_rep->rep_sem);
/* If we have a queue and it's full, log that fact */
if (Dmc_rep)
{
uleFormat(NULL, W_DM9561_REP_TXQ_FULL, NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_error, 0);
}
status = dm2rep_qman(xcb->xcb_odcb_ptr->odcb_dcb_ptr,
xcb->xcb_rep_remote_tx ? xcb->xcb_rep_remote_tx :
(i4)xcb->xcb_tran_id.db_low_tran,
&curtime, xcb->xcb_rep_input_q, xcb->xcb_lk_id,
&dmx->error, FALSE);
if (status != E_DB_OK)
{
if (dmx->error.err_code > E_DM004A_INTERNAL_ERROR)
{
uleFormat( &dmx->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmx->error, 0, E_DM957F_REP_DISTRIB_ERROR);
}
xcb->xcb_state |= XCB_TRANABORT;
break;
}
}
else
{
/* we have mutex and an entry we can use, so fill out entry */
/* we assume we are only accessing one db in this tx */
STRUCT_ASSIGN_MACRO(xcb->xcb_odcb_ptr->odcb_dcb_ptr->dcb_name,
repq[qnext].dbname);
/*
** use remote TX if it's set (by the replication server)
*/
if (xcb->xcb_rep_remote_tx)
repq[qnext].tx_id = xcb->xcb_rep_remote_tx;
else
repq[qnext].tx_id = (i4)xcb->xcb_tran_id.db_low_tran;
repq[qnext].active = FALSE;
MEcopy((char *)&curtime, sizeof(HRSYSTIME),
(char *)&repq[qnext].trans_time);
Dmc_rep->queue_end = qnext;
CSv_semaphore(&Dmc_rep->rep_sem);
/*
** signal the queue management thread(s)
*/
lk_event.type_high = REP_READQ;
lk_event.type_low = 0;
lk_event.value = REP_READQ_VAL;
cl_stat = LKevent(LK_E_CLR | LK_E_CROSS_PROCESS, xcb->xcb_lk_id,
&lk_event, &sys_err);
if (cl_stat != OK)
{
uleFormat(NULL, cl_stat, &sys_err, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
uleFormat(&dmx->error, E_DM904B_BAD_LOCK_EVENT, &sys_err, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 3,
0, LK_E_CLR, 0, REP_READQ, 0, xcb->xcb_lk_id);
status = E_DB_ERROR;
break;
}
}
/*
** user updates to the input queue will cause xcb_rep_input_q to
** be set to -1, the table will already be closed by the user in
** this case
*/
if (xcb->xcb_rep_input_q != (DMP_RCB *)-1)
{
status = dm2t_close(xcb->xcb_rep_input_q, (i4)0, &dmx->error);
if (status != E_DB_OK)
{
if (dmx->error.err_code != E_DM004A_INTERNAL_ERROR)
{
uleFormat( &dmx->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmx->error, 0, E_DM009A_ERROR_SECURE_TRAN);
}
xcb->xcb_state |= XCB_TRANABORT;
return (status);
}
xcb->xcb_rep_input_q = (DMP_RCB*)NULL;
}
}
/* Close all open tables and destroy all open temporary tables. */
while (xcb->xcb_rq_next != (DMP_RCB*) &xcb->xcb_rq_next)
{
/* Get next RCB. */
rcb = (DMP_RCB *)((char *)xcb->xcb_rq_next -
(char *)&(((DMP_RCB*)0)->rcb_xq_next));
/* Remove from the XCB. */
rcb->rcb_xq_next->rcb_q_prev = rcb->rcb_xq_prev;
rcb->rcb_xq_prev->rcb_q_next = rcb->rcb_xq_next;
/* Deallocate the RCB. */
status = dm2t_close(rcb, (i4)0, &dmx->error);
if (status != E_DB_OK)
{
if (dmx->error.err_code != E_DM004A_INTERNAL_ERROR)
{
uleFormat( &dmx->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmx->error, 0, E_DM009A_ERROR_SECURE_TRAN);
}
xcb->xcb_state |= XCB_TRANABORT;
return (status);
}
}
/* Now prepare to commit the transaction. */
STRUCT_ASSIGN_MACRO(dmx->dmx_dis_tran_id, xcb->xcb_dis_tran_id);
status = dmxe_secure(&xcb->xcb_tran_id, &xcb->xcb_dis_tran_id,
xcb->xcb_log_id, xcb->xcb_lk_id, &dmx->error);
if (status != E_DB_OK)
{
if (dmx->error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmx->error, 0, NULL, ULE_LOG, NULL,
(char * )NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmx->error, 0, E_DM009A_ERROR_SECURE_TRAN);
}
xcb->xcb_state |= XCB_TRANABORT;
return (E_DB_ERROR);
}
/* Mark the state of the transaction in xcb to WILLING COMMIT. */
xcb->xcb_x_type |= XCB_DISTRIBUTED;
xcb->xcb_state |= XCB_WILLING_COMMIT;
return (E_DB_OK);
}
return (status);
}
DB_STATUS
dmx_resume(
DMX_CB *dmx_cb)
{
char sem_name[10+16+10+1]; /* last +10 is slop */
DMX_CB *dmx = dmx_cb;
DML_SCB *scb;
DML_ODCB *odcb;
DML_XCB *x;
DML_XCB *xcb = (DML_XCB *)0;
i4 btflags = 0;
i4 mode;
i4 error,local_error;
DB_STATUS status;
CLRDBERR(&dmx->error);
status = E_DB_ERROR;
for (;;)
{
mode = DMXE_WRITE;
if ( (odcb = (DML_ODCB *)dmx->dmx_db_id) &&
dm0m_check((DM_OBJECT *)odcb, (i4)ODCB_CB) == 0 )
{
if ( (scb = odcb->odcb_scb_ptr) &&
dm0m_check((DM_OBJECT *)scb, (i4)SCB_CB) == 0 )
{
if (scb->scb_x_ref_count == 0)
{
/* Clear user interrupt state in SCB. */
scb->scb_ui_state &= ~SCB_USER_INTR;
status = dm0m_allocate((i4)sizeof(DML_XCB), 0,
(i4)XCB_CB, (i4)XCB_ASCII_ID, (char *)scb,
(DM_OBJECT **)&xcb, &dmx->error);
if (status == E_DB_OK)
{
if (odcb->odcb_dcb_ptr->dcb_status & DCB_S_JOURNAL)
btflags |= DMXE_JOURNAL;
x = xcb;
status = dmxe_resume(&dmx->dmx_dis_tran_id,
odcb->odcb_dcb_ptr,
&scb->scb_lock_list, &x->xcb_log_id,
&x->xcb_tran_id, &x->xcb_lk_id, &dmx->error);
}
if (status == E_DB_OK)
{
dm0s_minit(&x->xcb_cq_mutex,
STprintf(sem_name, "XCB cq %p", x));
x->xcb_x_type = XCB_UPDATE | XCB_DISTRIBUTED;
STRUCT_ASSIGN_MACRO(dmx->dmx_dis_tran_id, x->xcb_dis_tran_id);
x->xcb_state = XCB_WILLING_COMMIT;
x->xcb_flags = 0;
if (btflags & DMXE_JOURNAL)
x->xcb_flags |= XCB_JOURNAL;
x->xcb_q_next = scb->scb_x_next;
x->xcb_q_prev = (DML_XCB*)&scb->scb_x_next;
scb->scb_x_next->xcb_q_prev = xcb;
scb->scb_x_next = x;
x->xcb_scb_ptr = scb;
x->xcb_rq_next = (DMP_RCB*) &x->xcb_rq_next;
x->xcb_rq_prev = (DMP_RCB*) &x->xcb_rq_next;
x->xcb_sq_next = (DML_SPCB*) &x->xcb_sq_next;
x->xcb_sq_prev = (DML_SPCB*) &x->xcb_sq_next;
x->xcb_cq_next = (DML_XCCB*) &x->xcb_cq_next;
x->xcb_cq_prev = (DML_XCCB*) &x->xcb_cq_next;
x->xcb_odcb_ptr = odcb;
dmx->dmx_tran_id = (char *)x;
STRUCT_ASSIGN_MACRO(x->xcb_tran_id, dmx->dmx_phys_tran_id);
scb->scb_x_ref_count++;
STRUCT_ASSIGN_MACRO(scb->scb_user, x->xcb_username);
/* Initialize remaining XCB fields */
x->xcb_sp_id = 0;
x->xcb_rep_seq = 0;
x->xcb_rep_input_q = 0;
x->xcb_rep_remote_tx = 0;
x->xcb_s_open = 0;
x->xcb_s_fix = 0;
x->xcb_s_get = 0;
x->xcb_s_replace = 0;
x->xcb_s_delete = 0;
x->xcb_s_insert = 0;
x->xcb_s_cpu = 0;
x->xcb_s_dio = 0;
x->xcb_seq = (DML_SEQ*)NULL;
x->xcb_cseq = (DML_CSEQ*)NULL;
x->xcb_pcb_list = NULL;
x->xcb_crib_ptr = NULL;
x->xcb_lctx_ptr = NULL;
x->xcb_jctx_ptr = NULL;
return (E_DB_OK);
}
if (xcb != (DML_XCB *)0)
dm0m_deallocate((DM_OBJECT **)&xcb);
}
else
{
status = E_DB_ERROR;
SETDBERR(&dmx->error, 0, E_DM0060_TRAN_IN_PROGRESS);
}
}
else
{
status = E_DB_ERROR;
SETDBERR(&dmx->error, 0, E_DM002F_BAD_SESSION_ID);
}
}
else
{
status = E_DB_ERROR;
SETDBERR(&dmx->error, 0, E_DM0010_BAD_DB_ID);
}
break;
}
if (dmx->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmx->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&local_error, 0);
SETDBERR(&dmx->error, 0, E_DM0099_ERROR_RESUME_TRAN);
}
return (status);
}
/*{
** Name: dmve_ufmap - The recovery of an Fmap Update operation.
**
** Description:
**
** Inputs:
** dmve_cb
** .dmve_log_rec The log record of the fmap operation.
** .dmve_action Should be DMVE_DO, DMVE_REDO, or DMVE_UNDO
** .dmve_dcb_ptr Pointer to DCB.
** .dmve_tran_id The physical transaction id.
** .dmve_lk_id The transaction lock list id.
** .dmve_log_id The logging system database id.
** .dmve_db_lockmode The lockmode of the database. Should be
** DM2T_X or DM2T_S.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 25-Feb-2009 (hanal04) Bug 121652
** Created.
*/
DB_STATUS
dmve_ufmap(
DMVE_CB *dmve_cb)
{
DMVE_CB *dmve = dmve_cb;
DM0L_FMAP *log_rec = (DM0L_FMAP *)dmve->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->fmap_header.lsn;
DMP_DCB *dcb = dmve->dmve_dcb_ptr;
DMP_TABLE_IO *tbio = NULL;
DM1P_FMAP *fmap = NULL;
DB_STATUS status = E_DB_OK;
DB_STATUS tmp_status;
DMPP_ACC_PLV *loc_plv;
LK_LKID lockid;
LK_LKID fhdr_lockid;
i4 lock_action;
i4 grant_mode;
i4 recovery_action;
i4 error;
i4 loc_error;
i4 fmap_page_recover;
i4 physical_fhdr_page_lock = FALSE;
i4 fix_option = 0;
i4 page_type = log_rec->fmap_pg_type;
DB_ERROR local_dberr;
DMP_PINFO *fmappinfo = NULL;
CLRDBERR(&dmve->dmve_error);
DMVE_CLEAR_TABINFO_MACRO(dmve);
MEfill(sizeof(LK_LKID), 0, &lockid);
MEfill(sizeof(LK_LKID), 0, &fhdr_lockid);
for (;;)
{
/*
** Consistency Check: check for illegal log records.
*/
if ((log_rec->fmap_header.type != DM0LUFMAP) ||
(log_rec->fmap_header.length != sizeof(DM0L_UFMAP)))
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
break;
}
/*
** Get handle to a tableio control block with which to read
** and write pages needed during recovery.
**
** Warning return indicates that no tableio control block was
** built because no recovery is needed on any of the locations
** described in this log record.
*/
status = dmve_fix_tabio(dmve, &log_rec->fmap_tblid, &tbio);
if (DB_FAILURE_MACRO(status))
break;
if (status == E_DB_WARN &&
dmve->dmve_error.err_code == W_DM9660_DMVE_TABLE_OFFLINE)
{
CLRDBERR(&dmve->dmve_error);
return (E_DB_OK);
}
/*
** Get page accessors for page recovery actions.
*/
dm1c_get_plv(page_type, &loc_plv);
/*
** Check recovery requirements for this operation. If partial
** recovery is in use, then we may not need to recover all
** the pages touched by the original update.
*/
fmap_page_recover = dmve_location_check(dmve,
(i4)log_rec->fmap_fmap_cnf_loc_id);
/*
** Get required Table/Page locks before we can start the updates.
**
** FHDR pages are locked using temporary physical locks.
** Unlike many other recovery operations, it is possible that
** this page lock request may block temporarily since the page
** lock is not necessarily already held by the current transaction.
** FMAP pages are not locked and are protected by the FHDR page lock.
** (which means that we must lock the FHDR even if the FHDR is not
** being recovered).
**
** Note that if the database is locked exclusively, or if an X table
** lock is granted then no page lock is requried.
*/
if ((dcb->dcb_status & DCB_S_EXCLUSIVE) == 0)
{
/*
** Request IX lock in preparation of requesting an X page lock
** below. If the transaction already holds an exclusive table
** lock, then an X lock will be granted. In this case we can
** bypass the page lock request.
*/
status = dm2t_lock_table(dcb, &log_rec->fmap_tblid, DM2T_IX,
dmve->dmve_lk_id, (i4)0, &grant_mode, &lockid, &dmve->dmve_error);
if (status != E_DB_OK)
break;
if (grant_mode != DM2T_X)
{
/*
** Page lock required.
*/
lock_action = LK_PHYSICAL;
/*
** Lock the FHDR page. Use a physical lock.
** We must request this lock even if we are only
** processing the FMAP page because the FMAP is
** implicitly protected by the FHDR lock.
*/
if (fmap_page_recover)
{
status = dm0p_lock_page(dmve->dmve_lk_id, dcb,
&log_rec->fmap_tblid, log_rec->fmap_fhdr_pageno,
LK_PAGE, LK_X, LK_PHYSICAL, (i4)0, tbio->tbio_relid,
tbio->tbio_relowner, &dmve->dmve_tran_id,
&fhdr_lockid, (i4 *)0, (LK_VALUE *)0, &dmve->dmve_error);
if (status != E_DB_OK)
break;
physical_fhdr_page_lock = TRUE;
}
}
else
fix_option |= DM0P_TABLE_LOCKED_X;
}
/*
** Fix the pages we need to recover in cache for write.
*/
if (fmap_page_recover)
{
status = dmve_cachefix_page(dmve, log_lsn,
tbio, log_rec->fmap_fmap_pageno,
fix_option, loc_plv,
&fmappinfo);
if (status != E_DB_OK)
break;
fmap = (DM1P_FMAP*)fmappinfo->page;
/* Have to set page type if fixing in scratch mode */
if (dmve->dmve_action != DMVE_UNDO)
{
dm0p_pagetype(tbio, (DMPP_PAGE *)fmap,
dmve->dmve_log_id, DMPP_FMAP);
}
}
/*
** Dump debug trace info about pages if such tracing is configured.
*/
if (DMZ_ASY_MACRO(15))
{
dmve_trace_page_info(log_rec->fmap_pg_type, log_rec->fmap_page_size,
(DMPP_PAGE *) fmap, loc_plv, "FMAP");
}
/*
** Compare the LSN's on the pages with that of the log record
** to determine what recovery will be needed.
**
** - During Forward processing, if the page's LSN is greater than
** the log record then no recovery is needed.
**
** - During Backward processing, it is an error for a page's LSN
** to be less than the log record LSN.
**
** - Currently, during rollforward processing it is unexpected
** to find that a recovery operation need not be applied because
** of the page's LSN. This is because rollforward must always
** begin from a checkpoint that is previous to any journal record
** begin applied. In the future this requirement may change and
** Rollforward will use the same expectations as Redo.
*/
switch (dmve->dmve_action)
{
case DMVE_DO:
case DMVE_REDO:
if (fmap && LSN_GTE(
DM1P_VPT_ADDR_FMAP_PG_LOGADDR_MACRO(page_type, fmap),
log_lsn) && ((dmve->dmve_flags & DMVE_ROLLDB_BOPT) == 0))
{
if (dmve->dmve_action == DMVE_DO)
{
uleFormat(NULL, E_DM9665_PAGE_OUT_OF_DATE, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&loc_error, 8,
sizeof(DB_TAB_NAME), tbio->tbio_relid->db_tab_name,
sizeof(DB_OWN_NAME), tbio->tbio_relowner->db_own_name,
0, DM1P_VPT_GET_FMAP_PAGE_PAGE_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_PAGE_STAT_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_LOGADDR_HI_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_LOGADDR_LOW_MACRO(page_type, fmap),
0, log_lsn->lsn_high, 0, log_lsn->lsn_low);
}
fmap = NULL;
}
break;
case DMVE_UNDO:
if (fmap && LSN_LT(
DM1P_VPT_ADDR_FMAP_PG_LOGADDR_MACRO(page_type, fmap),
log_lsn))
{
uleFormat(NULL, E_DM9665_PAGE_OUT_OF_DATE, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char *)NULL, (i4)0, (i4 *)NULL,
&loc_error, 8,
sizeof(DB_TAB_NAME), tbio->tbio_relid->db_tab_name,
sizeof(DB_OWN_NAME), tbio->tbio_relowner->db_own_name,
0, DM1P_VPT_GET_FMAP_PAGE_PAGE_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_PAGE_STAT_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_LOGADDR_HI_MACRO(page_type, fmap),
0, DM1P_VPT_GET_FMAP_LOGADDR_LOW_MACRO(page_type, fmap),
0, log_lsn->lsn_high, 0, log_lsn->lsn_low);
SETDBERR(&dmve->dmve_error, 0, E_DM9666_PAGE_LSN_MISMATCH);
status = E_DB_ERROR;
}
break;
}
if (status != E_DB_OK || !fmap)
break;
/*
** Call appropriate recovery action depending on the recovery type
** and record flags. CLR actions are always executed as an UNDO
** operation.
*/
recovery_action = dmve->dmve_action;
if (log_rec->fmap_header.flags & DM0L_CLR)
recovery_action = DMVE_UNDO;
switch (recovery_action)
{
case DMVE_DO:
case DMVE_REDO:
status = dmv_reufmap(dmve, tbio, fmappinfo, log_rec);
break;
case DMVE_UNDO:
status = dmv_unufmap(dmve, tbio, fmappinfo, log_rec, loc_plv);
break;
}
break;
}
if (status != E_DB_OK)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
}
/*
** Unfix and unlock the pages in the opposite order (FMAP, FHDR)
** in which they were acquired (FHDR, FMAP).
** No need to force them to disk - they
** will be tossed out through normal cache protocols if Fast
** Commit or at the end of the abort if non Fast Commit.
*/
if (fmappinfo)
{
tmp_status = dm0p_uncache_fix(tbio, DM0P_UNFIX, dmve->dmve_lk_id,
dmve->dmve_log_id, &dmve->dmve_tran_id,
fmappinfo, &local_dberr);
if (tmp_status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &loc_error, 0);
if (tmp_status > status)
status = tmp_status;
}
}
if (physical_fhdr_page_lock)
{
tmp_status = dm0p_unlock_page(dmve->dmve_lk_id, dcb,
&log_rec->fmap_tblid, log_rec->fmap_fhdr_pageno, LK_PAGE,
tbio->tbio_relid, &dmve->dmve_tran_id, &fhdr_lockid,
(LK_VALUE *)NULL, &local_dberr);
if (tmp_status != E_DB_OK)
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &loc_error, 0);
if (tmp_status > status)
status = tmp_status;
}
}
if (tbio)
{
tmp_status = dmve_unfix_tabio(dmve, &tbio, 0);
if (tmp_status > status)
status = tmp_status;
}
if (status != E_DB_OK)
SETDBERR(&dmve->dmve_error, 0, E_DM9641_DMVE_FMAP);
return(status);
}
/*{
** Name: dmve_ext_alter - The recovery of an extent alteration.
**
** Description:
** This function performs the recovery of the extent alteration
** done when iiqef_alter_extension (an internal procedure) changes
** bits in the config file to alter an extent type.
**
** Currently the only operation supported is changing a defaultable
** work location (DU_EXT_WORK) to an auxiliary work location (DU_EXT_AWORK)
** and vice-versa.
**
** For UNDO, we read the config file and if the update has been made
** we reverse it, otherwise we just close it and continue. For DO, we
** read the config file and if the update was done we ignore, otherwise
** we make the update.
**
** Inputs:
** dmve_cb
** .dmve_log_rec The rename file log record.
** .dmve_action Should be DMVE_UNDO, DMVE_REDO or DMVE_DO.
** .dmve_dcb_ptr Pointer to DCB.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 15-sep-93 (jrb)
** Created for MLSort project.
** 15-apr-1994 (chiku)
** Bug56702: return logfull indication.
** 06-may-1996 (nanpr01)
** Get rid of compiler warning message.
*/
DB_STATUS
dmve_ext_alter(
DMVE_CB *dmve_cb)
{
DMVE_CB *dmve = dmve_cb;
DB_STATUS status = E_DB_OK;
DB_STATUS local_status = E_DB_OK;
i4 error = E_DB_OK, local_error = E_DB_OK;
DM0L_EXT_ALTER *log_rec = (DM0L_EXT_ALTER *)dmve_cb->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->ext_header.lsn;
DMP_DCB *dcb;
DM0C_CNF *config = 0;
DM0C_CNF *cnf = 0;
i4 lock_list;
DMP_LOC_ENTRY *l;
i4 loc_count;
i4 i;
i4 recovery_action;
i4 dm0l_flags;
DM2D_ALTER_INFO dm2d;
DB_ERROR local_dberr;
CLRDBERR(&dmve->dmve_error);
for (;;)
{
if (log_rec->ext_header.length != sizeof(DM0L_EXT_ALTER) ||
log_rec->ext_header.type != DM0LEXTALTER)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
break;
}
dcb = dmve->dmve_dcb_ptr;
lock_list = dmve->dmve_lk_id;
recovery_action = dmve->dmve_action;
if (log_rec->ext_header.flags & DM0L_CLR)
recovery_action = DMVE_UNDO;
switch (recovery_action)
{
case DMVE_UNDO:
/*
** Write CLR if necessary
*/
if ((dmve->dmve_logging) &&
((log_rec->ext_header.flags & DM0L_CLR) == 0))
{
dm0l_flags = log_rec->ext_header.flags | DM0L_CLR;
status = dm0l_ext_alter(dmve->dmve_log_id, dm0l_flags,
log_rec->ext_otype, log_rec->ext_ntype,
&log_rec->ext_lname, log_lsn, &dmve->dmve_error);
if (status != E_DB_OK)
{
/* XXXX Better error message and continue after logging. */
TRdisplay(
"dmve_ext_alter: dm0l_ext_alter error, status: %d, error: %d\n",
status, dmve->dmve_error.err_code);
/*
* Bug56702: return logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
break;
}
}
/*
** Open the configuration file.
*/
status = dm0c_open(dcb, DM0C_NOLOCK, lock_list, &cnf, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = cnf;
/*
** Change bits for location named in the log_rec
*/
loc_count = cnf->cnf_dsc->dsc_ext_count;
for (i = 0; i < loc_count; i++)
{
l = &cnf->cnf_ext[i].ext_location;
if (MEcmp((char *)&l->logical, (char *)&log_rec->ext_lname,
sizeof(DB_LOC_NAME)) == 0)
break;
}
if (i >= loc_count)
{
/* No entry found; this is bad... */
TRdisplay(
"dmve_ext_alter: UNDO location '%s' not found in config file.\n",
(char *)&log_rec->ext_lname);
SETDBERR(&dmve->dmve_error, 0, E_DM92A0_DMVE_ALTER_UNDO);
status = E_DB_ERROR;
break;
}
/* Undo changes to bits of the current location if necessary */
if (l->flags & log_rec->ext_ntype)
{
l->flags &= ~(log_rec->ext_ntype);
l->flags |= log_rec->ext_otype;
}
/* Close the configuration file. */
status = dm0c_close(cnf, DM0C_UPDATE | DM0C_COPY, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = 0;
break;
case DMVE_REDO:
break;
case DMVE_DO:
/* Fill in dm2d block in preparation for calling dm2d_alter_db
** to rollforward the extent alteration
**
** lock_no_wait doesn't matter because we won't do any logging
** or locking in dm2d_alter_db when calling it from here.
*/
dm2d.lock_list = lock_list;
dm2d.lock_no_wait = 1;
dm2d.logging = 0;
dm2d.locking = 0;
dm2d.name = &dcb->dcb_name;
dm2d.db_loc = (char *) &dcb->dcb_location.physical;
dm2d.l_db_loc = dcb->dcb_location.phys_length;
dm2d.location_name = &log_rec->ext_lname;
dm2d.alter_op = DM2D_EXT_ALTER;
dm2d.alter_info.ext_info.drop_loc_type = log_rec->ext_otype;
dm2d.alter_info.ext_info.add_loc_type = log_rec->ext_ntype;
status = dm2d_alter_db(&dm2d, &dmve->dmve_error);
break;
} /* end switch. */
if (config != 0)
{
(void) dm0c_close(cnf, 0, &local_dberr);
}
if (status != E_DB_OK)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
break;
}
return(E_DB_OK);
} /* end for. */
if (dmve->dmve_error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM9617_DMVE_LOCATION);
}
return(status);
}
/*{
** Name: sxf_call - The main SXF entry point.
**
** Description:
** The routine checks that the arguments to sxf_call look reasonable.
** The implementing function is then called and operation completion
** status is returned to the caller.
**
** Inputs:
** op_code The SXF operation code.
** rcb The SXF request control block for the operation.
**
** Outputs:
** Returns:
** DB_STATUS
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 9-July-1992 (markg)
** Initial creation.
** 03-sep-1992 (pholman)
** Give calls NULL functionlaity for initial integration
** 20-oct-1992 (markg)
** Updated to have entry points for all SXF operations.
*/
DB_STATUS
sxf_call(
SXF_OPERATION op_code,
SXF_RCB *rcb)
{
DB_STATUS status = E_DB_OK;
EX_CONTEXT context;
i4 error;
CLRDBERR(&rcb->sxf_error);
/* Make a cursury check for bad parameters. */
if (op_code < SXF_MIN_OPCODE
|| op_code > SXF_MAX_OPCODE
|| rcb->sxf_cb_type != SXFRCB_CB
|| rcb->sxf_length != sizeof (SXF_RCB)
|| (Sxf_svcb == NULL && op_code != SXC_STARTUP))
{
/* Figure out the error in more detail. */
if (op_code < SXF_MIN_OPCODE || op_code > SXF_MAX_OPCODE)
SETDBERR(&rcb->sxf_error, 0, E_SX0001_BAD_OP_CODE);
else if (rcb->sxf_cb_type != SXFRCB_CB)
SETDBERR(&rcb->sxf_error, 0, E_SX0002_BAD_CB_TYPE);
else if (rcb->sxf_length != sizeof (SXF_RCB))
{
TRdisplay("Bad SXF CB length. Input length %d expected %d\n",
rcb->sxf_length, sizeof(SXF_RCB));
SETDBERR(&rcb->sxf_error, 0, E_SX0003_BAD_CB_LENGTH);
}
else
SETDBERR(&rcb->sxf_error, 0, E_SX000F_SXF_NOT_ACTIVE);
return (E_DB_ERROR);
}
if (EXdeclare(ex_handler, &context) == OK
&& (Sxf_svcb == NULL || (Sxf_svcb->sxf_svcb_status & SXF_CHECK) == 0))
{
switch (op_code)
{
/* Control operations. */
case SXC_STARTUP:
status = sxc_startup(rcb);
break;
case SXC_SHUTDOWN:
status = sxc_shutdown(rcb);
break;
case SXC_BGN_SESSION:
status = sxc_bgn_session(rcb);
break;
case SXC_END_SESSION:
status = sxc_end_session(rcb);
break;
case SXC_ALTER_SESSION:
status = sxc_alter_session(rcb);
break;
case SXC_AUDIT_THREAD:
status = sxac_audit_thread(rcb);
break;
case SXC_AUDIT_WRITER_THREAD:
status = sxac_audit_writer_thread(rcb);
break;
/* Audit file oerations */
case SXA_OPEN:
status = sxaf_open(rcb);
break;
case SXA_CLOSE:
status = sxaf_close(rcb);
break;
/* Audit record operations */
case SXR_WRITE:
status = sxar_write(rcb);
break;
case SXR_POSITION:
status = sxar_position(rcb);
break;
case SXR_READ:
status = sxar_read(rcb);
break;
case SXR_FLUSH:
status = sxar_flush(rcb);
break;
/* Audit state operations */
case SXS_ALTER:
status = sxas_alter(rcb);
break;
case SXS_SHOW:
status = sxas_show(rcb);
break;
}
EXdelete();
return (status);
}
/*
** If exception handler declares or the SXF_SVCB has already been
** marked inconsistent, this is a server fatal condition. In most
** cases it is sufficient to return a server fatal error, and let the
** caller handle the rest.
**
** However, if this is an audit record write operation we have to
** nuke the server ourselves. The reason for this is that if the
** client code does not handle the return status correctly the
** security of the system could be compromised.
*/
EXdelete();
if (op_code == SXR_WRITE)
{
_VOID_ ule_format(E_SX0005_INTERNAL_ERROR, NULL, ULE_LOG,
NULL, NULL, 0L, NULL, &error, 0);
_VOID_ ule_format(E_SX1048_SERVER_TERMINATE, NULL, ULE_LOG,
NULL, NULL, 0L, NULL, &error, 0);
_VOID_ CSterminate(CS_KILL, NULL);
}
SETDBERR(&rcb->sxf_error, 0, E_SX0005_INTERNAL_ERROR);
return (E_DB_FATAL);
}
/*{
** Name: dmve_del_location - The recovery of an delete location operation.
**
** Description:
** This function performs the recovery of the delete location
** update operation. This is to update the config file
** with any new locations deleted by unextenddb.
** In the case of UNDO, reads the config file, if update has been
** made, then it adds it otherwise it just closes and continues.
** In case of DO, reads the config file, deletes and then closes.
**
** Inputs:
** dmve_cb
** .dmve_log_rec The rename file log record.
** .dmve_action Should be DMVE_UNDO, DMVE_REDO or DMVE_DO.
** .dmve_dcb_ptr Pointer to DCB.
**
** Outputs:
** dmve_cb
** .dmve_error.err_code The reason for error status.
** Returns:
** E_DB_OK
** E_DB_ERROR
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 29-apr-2004 (gorvi01)
** Created for UNEXTENDDB.
** 09-Nov-2004 (jenjo02)
** Relocated misplaced logging of CLR from DMVE_DO
** to DMVE_UNDO
*/
DB_STATUS
dmve_del_location(
DMVE_CB *dmve_cb)
{
DMVE_CB *dmve = dmve_cb;
DB_STATUS status = E_DB_OK;
DB_STATUS local_status = E_DB_OK;
i4 error = E_DB_OK, local_error = E_DB_OK;
DM0L_DEL_LOCATION *log_rec = (DM0L_DEL_LOCATION *)dmve_cb->dmve_log_rec;
LG_LSN *log_lsn = &log_rec->loc_header.lsn;
DMP_DCB *dcb;
DM0C_CNF *config = 0;
DM0C_CNF *cnf = 0;
i4 lock_list;
DMP_LOC_ENTRY *l;
i4 loc_count;
i4 i;
i4 recovery_action;
i4 dm0l_flags;
DB_ERROR local_dberr;
CLRDBERR(&dmve->dmve_error);
for (;;)
{
if (log_rec->loc_header.length != sizeof(DM0L_DEL_LOCATION) ||
log_rec->loc_header.type != DM0LDELLOCATION)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9601_DMVE_BAD_PARAMETER);
break;
}
dcb = dmve->dmve_dcb_ptr;
lock_list = dmve->dmve_lk_id;
recovery_action = dmve->dmve_action;
if (log_rec->loc_header.flags & DM0L_CLR)
recovery_action = DMVE_UNDO;
switch (recovery_action)
{
case DMVE_REDO:
break;
case DMVE_DO:
/*
** Remove the location entry from the DCB, if it exists.
*/
if (dcb->dcb_ext && dcb->dcb_ext->ext_count)
loc_count = dcb->dcb_ext->ext_count;
else
loc_count = 0;
for (i = 0; i < loc_count; i++)
{
l = &dcb->dcb_ext->ext_entry[i];
if (MEcmp((char *)&l->logical, (char *)&log_rec->loc_name,
sizeof(DB_LOC_NAME)) == 0)
break;
}
if (i >= loc_count)
{
/* No entry found, nothing to remove. */
;
#ifdef xDEBUG
TRdisplay(
"dmve_del_location: UNDO location '%s' not found in DCB.\n",
(char *)&log_rec->loc_name);
#endif
}
else if (i == (loc_count - 1))
{
/* This is last entry, easy. */
dcb->dcb_ext->ext_entry[i].phys_length = 0;
dcb->dcb_ext->ext_count--;
}
else
{
/* In middle of list, compress. */
loc_count--;
MEcopy((char *)&dcb->dcb_ext->ext_entry[i+1].logical,
sizeof(DMP_LOC_ENTRY) * (loc_count-i),
(char *)&dcb->dcb_ext->ext_entry[i].logical);
/* Mark the end of list. */
dcb->dcb_ext->ext_entry[loc_count].phys_length = 0;
dcb->dcb_ext->ext_count--;
}
/*
** Open the configuration file.
*/
status = dm0c_open(dcb, DM0C_NOLOCK, lock_list,
&cnf, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = cnf;
/*
** Delete this entry from the list.
*/
loc_count = cnf->cnf_dsc->dsc_ext_count;
for (i = 0; i < loc_count; i++)
{
l = &cnf->cnf_ext[i].ext_location;
if (MEcmp((char *)&l->logical, (char *)&log_rec->loc_name,
sizeof(DB_LOC_NAME)) == 0)
break;
}
if (i >= loc_count)
{
/* No entry found, nothing to undo. */
break;
}
if (i == (loc_count - 1))
{
/* This is last entry, easy. */
cnf->cnf_ext[i].length = 0;
cnf->cnf_ext[i].type = 0;
cnf->cnf_dsc->dsc_ext_count--;
}
else
{
/* In middle of list, compress. */
loc_count--;
MEcopy((char *)&cnf->cnf_ext[i+1].ext_location.logical,
sizeof(DMP_LOC_ENTRY)*(loc_count-i),
(char *)&cnf->cnf_ext[i].ext_location.logical);
/* Mark the end of list. */
cnf->cnf_ext[loc_count].length = 0;
cnf->cnf_ext[loc_count].type = 0;
cnf->cnf_dsc->dsc_ext_count--;
}
/* Close the configuration file. */
status = dm0c_close(cnf, DM0C_UPDATE | DM0C_COPY, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = 0;
break;
case DMVE_UNDO:
/*
** Write CLR if necessary
*/
if ((dmve->dmve_logging) &&
((log_rec->loc_header.flags & DM0L_CLR) == 0))
{
dm0l_flags = log_rec->loc_header.flags | DM0L_CLR;
status = dm0l_del_location(dmve->dmve_log_id, dm0l_flags,
log_rec->loc_type, &log_rec->loc_name,
log_rec->loc_l_extent, &log_rec->loc_extent,
log_lsn, &dmve->dmve_error);
if (status != E_DB_OK)
{
/* XXXX Better error message and continue after logging. */
TRdisplay(
"dmve_del_location: dm0l_del_location error, status: %d, error: %d\n",
status, dmve->dmve_error.err_code);
/*
* Bug56702: return logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
break;
}
}
/* Open the configuration file. */
l = dcb->dcb_ext->ext_entry;
loc_count = dcb->dcb_ext->ext_count;
for (i = 0; i < loc_count; i++, l++)
if ((MEcmp((char *)&l->logical, (char *)&log_rec->loc_name,
sizeof(DB_LOC_NAME)) == 0)
&& (l->flags == log_rec->loc_type))
break;
if (i < loc_count)
{
/* Found this entry, return error. */
SETDBERR(&dmve->dmve_error, 0, E_DM007E_LOCATION_EXISTS);
break;
}
status = dm0c_open(dcb, 0, lock_list,
&cnf, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = cnf;
/* Check if there is room. */
if (cnf->cnf_free_bytes < sizeof(DM0C_EXT))
{
status = dm0c_extend(cnf, &dmve->dmve_error);
if (status != E_DB_OK)
{
SETDBERR(&dmve->dmve_error, 0, E_DM0071_LOCATIONS_TOO_MANY);
break;
}
}
i = cnf->cnf_dsc->dsc_ext_count++;
cnf->cnf_ext[i].length = sizeof(DM0C_EXT);
cnf->cnf_ext[i].type = DM0C_T_EXT;
MEcopy((char *)&log_rec->loc_name, sizeof(DB_LOC_NAME),
(char *)&cnf->cnf_ext[i].ext_location.logical);
MEcopy((char *)&log_rec->loc_extent, sizeof(DM_FILENAME),
(char *)&cnf->cnf_ext[i].ext_location.physical);
cnf->cnf_ext[i].ext_location.flags = log_rec->loc_type;
cnf->cnf_ext[i].ext_location.phys_length = log_rec->loc_l_extent;
cnf->cnf_ext[i+1].length = 0;
cnf->cnf_ext[i+1].type = 0;
/* Add new location info to DCB so RFP will be able to use it. */
dcb->dcb_ext->ext_count = cnf->cnf_dsc->dsc_ext_count;
STRUCT_ASSIGN_MACRO(cnf->cnf_ext[i].ext_location,
dcb->dcb_ext->ext_entry[i]);
/* Close the configuration file. */
status = dm0c_close(cnf, DM0C_UPDATE, &dmve->dmve_error);
if (status != E_DB_OK)
break;
config = 0;
break;
} /* end switch. */
if (config != 0)
{
(void) dm0c_close(cnf, 0, &local_dberr);
}
if (status != E_DB_OK)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
break;
}
return(E_DB_OK);
} /* end for. */
if (dmve->dmve_error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &error, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM9617_DMVE_LOCATION);
}
return(status);
}
/*{
** Name: dmu_pindex - Creates multiple indices on a table.
**
** INTERNAL DMF call format: status = dmu_pindex(&dmu_cb);
**
** EXTERNAL call format: status = dmf_call(DMU_PINDEX_TABLE,&dmu_cb);
**
** Description:
** The dmu_index function handles the creation of indices.
** This dmu function is allowed inside a user specified transaction.
** The table name must not be the same as a system table name and must
** not be the same name as any other table owned by the same user.
** The table that this index is defined on must exist and must be
** identified by use of the internal identifier obtained from a dmt_show
** operation. It is assumed that the caller has verified that the
** base table is owned by the same user.
**
** Inputs:
** .dmu_cb
** .type Must be set to DMU_UTILITY_CB.
** .length Must be at least sizeof(DMU_CB).
** .dmu_tran_id Must be the current transaction
** identifier returned from the begin
** transaction operation.
** .dmu_flags_mask Must be zero.
** .dmu_tbl_id Internal name of table to be
** indexed.
** .dmu_index_name External name of index to be
** created.
** .dmu_location.data_address Pointer to array of locations.
** Each entry in array is of type
** DB_LOC_NAME.
** .dmu_location.data_in_size The size of the location array
** in bytes.
** .dmu_olocation.data_address This holds source of gateway
** table if this is a gateway register.
** .dmu_key_array.ptr_address Pointer to an area used to input
** an array of pointer to entries
** of type DMU_KEY_ENTRY.
** See below for description of
** <dmu_key_list> entries.
** .dmu_key_array.ptr_size Size of an entry.
** .dmu_key_array.ptr_in_count Count of entries.
** .dmu_attr_array.ptr_address Pointer to to area used to input
** an array or pointers to entries
** of type DMU_KEY_ENTRY.
** If this entry is not passed in
** all the key's given in the key
** array are considered part of the
** key. If this pass in, only the
** keys in this list are considered
** part of the key. The keys listed
** in this list must be a prefix set
** of the keys listed in the key array.
** .dmu_attr_array.ptr_size Size of an entry.
** .dmu_attr_array.ptr_in_count Count of entries.
** .dmu_char_array.data_address Pointer to an area used to input
** an array of entries of type
** DMU_CHAR_ENTRY.
** See below for description of
** <dmu_char_array> entries.
** .dmu_char_array.data_in_size Length of char_array in bytes.
** .dmu_gwchar_array.data_address Pointer to an array of gateway table
** characteristics. These are used
** if the table is a DMU_GATEWAY type
** table. These characteristics are
** passed directly down to the Ingres
** Gateway system.
** .dmu_gwchar_array.data_in_size Length of gwchar_array in bytes.
** .dmu_gwattr_array.ptr_address Pointer to array of pointers, each
** of which describes gateway specific
** information about a table column.
** This is used only if the table is
** a DMU_GATEWAY type table. These
** entries are passed directly down to
** the Ingres Gateway system.
** .dmu_gwattr_array.ptr_size The size of each element in array.
** .dmu_gwattr_array.ptr_address The number of pointers in the array.
**
** <dmu_key_array> entries are of type DMU_KEY_ENTRY and
** must have following format:
** key_attr_name Name of attribute.
** key_order Must be DMU_ASCENDING.
**
** <dmu_char_array> entries are of type DMU_CHAR_ENTRY and
** must have following format:
** char_id Must be one of the dmu
** characteristics like
** DMU_STRUCTURE,
** DMU_IFILL,
** DMU_DATAFILL,
** DMU_LEAFILL,
** DMU_MINPAGES,
** DMU_MAXPAGES,
** DMU_UNIQUE,
** DMU_COMPRESSED,
** DMU_GATEWAY,
** DMU_INDEX_COMP.
** DMU_CONCURRENT_ACCESS
** DMU_DIMENSION
** DMU_TABLE_PRIORITY
** char_value The value to associate with above
** characteristic.
**
** Output:
** dmu_cb
** .dmu_idx_id The internal table identifier
** assigned to this index.
** .error.err_code One of the following error numbers.
** E_DM0000_OK
** E_DM0006_BAD_ATTR_FLAG
** E_DM0007_BAD_ATTR_NAME
** E_DM0009_BAD_ATTR_SIZE
** E_DM0008_BAD_ATTR_PRECISION
** E_DM000A_BAD_ATTR_TYPE
** E_DM000B_BAD_CB_LENGTH
** E_DM000C_BAD_CB_TYPE
** E_DM000D_BAD_CHAR_ID
** E_DM000E_BAD_CHAR_VALUE
** E_DM0010_BAD_DB_ID
** E_DM001C_BAD_KEY_SEQUENCE.
** E_DM001D_BAD_LOCATION_NAME.
** E_DM001E_DUP_LOCATION_NAME.
** E_DM001A_BAD_FLAG
** E_DM0021_TABLES_TOO_MANY
** E_DM002A_BAD_PARAMETER
** E_DM0039_BAD_TABLE_NAME
** E_DM003A_BAD_TABLE_OWNER
** E_DM003B_BAD_TRAN_ID
** E_DM0042_DEADLOCK
** E_DM0045_DUPLICATE_KEY
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEEDED
** E_DM0054_NONEXISTENT_TABLE
** E_DM0059_NOT_ALL_KEYS
** E_DM005D_TABLE_ACCESS_CONFLICT
** E_DM005E_CANT_UPDATE_SYSCAT
** E_DM005F_CANT_INDEX_CORE_SYSCAT
** E_DM0064_USER_INTR
** E_DM0065_USER_ABORT
** E_DM006A_TRAN_ACCESS_CONFLICT
** E_DM0071_LOCATIONS_TOO_MANY
** E_DM0072_NO_LOCATION
** E_DM0078_TABLE_EXISTS
** E_DM007D_BTREE_BAD_KEY_LENGTH
** E_DM010F_ISAM_BAD_KEY_LENGTH
** E_DM0110_COMP_BAD_KEY_LENGTH
** E_DM0092_ERROR_INDEXING_TABLE
** E_DM009F_ILLEGAL_OPERATION
** E_DM0100_DB_INCONSISTENT
** E_DM0103_TUPLE_TOO_WIDE
** E_DM010C_TRAN_ABORTED
** E_DM0125_DDL_SECURITY_ERROR
**
** .error.err_data Set to attribute in error by
** returning index into attribute list.
** Returns:
** E_DB_OK Function completed normally.
** E_DB_WARN Function completed normally with
** a termination status which is in
** dmu_cb.error.err_code.
** E_DB_ERROR Function completed abnormally with
** a termination status which is in
** dmu_cb.error.err_code.
** E_DB_FATAL Function completed with a fatal
** error which must be handled
** immediately. The fatal status is in
** dmu_cb.error.err_code.
**
** History:
** 01-may-98 (nanpr01)
** Created from dmu_index.
** 18-mar-1999 (stial01)
** Copy err_code, err_data into corresponding dmu cb, not 1st.
** 01-may-1999 (stial01)
** Fixed error handling.
** 17-Apr-2001 (horda03) Bug 104402
** Added support for TCB_NOT_UNIQUE attribute.
** 15-jul-2002 (hayke02)
** Initialise systemGenerated et al at the beginning of the
** dmu/indx_cb for loop. This prevents non-system generated
** (constraint) persistent indices being marked as such after a
** system generated index has already been processed. This change
** fixes bug 107621.
** 24-jul-2002 (hanal04) Bug 108330 INGSRV 1847
** Initialise the new indxcb_dmveredo field.
** 22-Dec-2003 (jenjo02)
** Added DMU_GLOBAL_INDEX for Partitioned Table Project.
** 6-Feb-2004 (schka24)
** Get rid of DMU statement count and its limit.
** 08-jul-2004 (thaju02)
** Online Modify - init indxcb_online_fhdr_pageno.
** (B112610)
** 11-Mar-2005 (thaju02)
** Use $online idxs relation info. (B114069)
** 11-Nov-2005 (jenjo02)
** Replaced dmx_show() with the more robust
** dmxCheckForInterrupt() to standardize external
** interrupt handling.
** 15-Aug-2006 (jonj)
** Moved guts to common dmuIndexSetup().
** 25-oct-2006 (stial01)
** Fixed initialization of DM2U_INDEX_CB
** 24-Oct-2008 (jonj)
** Cleaned up readability, fix potential memory leak.
** 22-Jul-2009 (thaju02)
** For E_DM007D, dmu_tup_cnt was not getting set.
*/
DB_STATUS
dmu_pindex(DMU_CB *dmu_cbs)
{
DMU_CB *dmu = dmu_cbs;
DMU_CB *ndmu;
DM2U_INDEX_CB *indx_cb, *indx_cbs, *curr_indx_cb = NULL;
DB_OWN_NAME table_owner;
DB_TAB_NAME table_name;
DML_XCB *xcb;
i4 error,local_error;
i4 NiX, k, tot_size;
DB_STATUS status;
CLRDBERR(&dmu->error);
/* Count how many control block was passed */
ndmu = dmu;
for ( NiX = 0; ndmu; NiX++ )
ndmu = (DMU_CB*)ndmu->q_next;
if (NiX == 1)
{
status = dmu_index(dmu);
return(status);
}
tot_size = sizeof(DM2U_INDEX_CB) * NiX;
status = dm0m_allocate(tot_size, 0,
(i4)DM2U_IND_CB, (i4)DM2U_IND_ASCII_ID,
(char *)dmu, (DM_OBJECT **)&indx_cbs, &dmu->error);
if (status != E_DB_OK)
{
uleFormat(&dmu->error, 0, NULL, ULE_LOG, NULL,
NULL, 0, NULL, &local_error, 0);
return(E_DB_ERROR);
}
ndmu = dmu;
indx_cb = indx_cbs;
for (k = 0; k < NiX; k++)
{
indx_cb->indxcb_tab_name = &table_name;
indx_cb->indxcb_tab_owner = &table_owner;
if ( status = dmuIndexSetup(ndmu, (PTR)indx_cb) )
{
/* copy error info to "first" dmu */
dmu->error = ndmu->error;
break;
}
/* Now link up the control blocks */
indx_cb->q_next = NULL;
indx_cb->q_prev = NULL;
if (curr_indx_cb != (DM2U_INDEX_CB *) NULL)
curr_indx_cb->q_next = indx_cb;
curr_indx_cb = indx_cb;
ndmu = (DMU_CB*)ndmu->q_next;
indx_cb++;
}
if (dmu->error.err_code)
{
if (dmu->error.err_code > E_DM_INTERNAL)
{
uleFormat(&dmu->error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char * )NULL, (i4)0, (i4 *)NULL, &local_error, 0);
SETDBERR(&dmu->error, 0, E_DM0092_ERROR_INDEXING_TABLE);
}
/* No leaking! */
dm0m_deallocate((DM_OBJECT **) &indx_cbs);
return(E_DB_ERROR);
}
/* Calls the physical layer to process the rest of the index create */
status = dm2u_pindex(indx_cbs);
for (k = 0, ndmu = dmu, indx_cb = indx_cbs; k < NiX;
k++, indx_cb++, ndmu = (DMU_CB *)ndmu->q_next)
{
/* Audit successful index on TABLE. */
if ( status == E_DB_OK && dmf_svcb->svcb_status & SVCB_C2SECURE )
{
status = dma_write_audit(
SXF_E_TABLE,
SXF_A_SUCCESS | SXF_A_INDEX,
ndmu->dmu_index_name.db_tab_name, /* index name */
sizeof(ndmu->dmu_index_name.db_tab_name),
&ndmu->dmu_owner, /* Table/view owner */
I_SX2011_INDEX_CREATE,
FALSE, /* Not force */
&ndmu->error, NULL);
}
if ( status )
{
/* Find the first one that got an error */
if ( ndmu->error.err_code == 0 )
continue;
if (ndmu->error.err_code > E_DM_INTERNAL)
{
uleFormat(&ndmu->error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char * )NULL, (i4)0, (i4 *)NULL, &local_error, 0);
SETDBERR(&ndmu->error, 0, E_DM0092_ERROR_INDEXING_TABLE);
}
else if ( xcb = indx_cb->indxcb_xcb )
switch (ndmu->error.err_code)
{
case E_DM004B_LOCK_QUOTA_EXCEEDED:
case E_DM0112_RESOURCE_QUOTA_EXCEED:
case E_DM0092_ERROR_INDEXING_TABLE:
case E_DM0045_DUPLICATE_KEY:
case E_DM006A_TRAN_ACCESS_CONFLICT:
xcb->xcb_state |= XCB_STMTABORT;
break;
case E_DM0042_DEADLOCK:
case E_DM004A_INTERNAL_ERROR:
case E_DM0100_DB_INCONSISTENT:
xcb->xcb_state |= XCB_TRANABORT;
break;
case E_DM0065_USER_INTR:
xcb->xcb_state |= XCB_USER_INTR;
break;
case E_DM010C_TRAN_ABORTED:
xcb->xcb_state |= XCB_FORCE_ABORT;
break;
case E_DM007D_BTREE_BAD_KEY_LENGTH:
ndmu->dmu_tup_cnt = indx_cb->indxcb_maxklen;
break;
}
break;
}
}
dm0m_deallocate((DM_OBJECT **) &indx_cbs);
return(status);
}
/*{
** Name: dmr_get - Get a record.
**
** INTERNAL DMF call format: status = dmr_get(&dmr_cb);
**
** EXTERNAL call format: status = dmf_call(DMR_GET,&dmr_cb);
**
** Description:
** This function gets a record from a table. It can either get a record
** by tuple identifier, re-get the last record returned, or get the
** next record that passes the qualification specified by the dmr_position
** operation. If no morerecords meet the qualification the caller is
** returned a error indicating no next record.
**
** As a special case for aggregate optimization, this function may
** be called to obtain the count of records in the table, which prior
** to this change required getting all records with multiple calls
** to this function.
**
** Note: When a B1 secure server is running, this interface only
** returns records that pass the B1 MAC assurances. Namely, only
** records with a security label that is dominated by the security
** label of the requester are returned.
**
** Inputs:
** dmr_cb
** .type Must be set to DMR_RECORD_CB.
** .length Must be at least
** sizeof(DMR_RECORD_CB) bytes.
** .dmr_flags_mask Must be DMR_NEXT, DMR_PREV,
** DMR_CURRENT_POS or DMR_BY_TID.
** .dmr_access_id Record access identifer returned
** from DMT_OPEN that identifies a
** table.
** .dmr_tid If dmr_flags_mask = DMR_BY_TID, then
** field is used as a tuple identifer.
** .dmr_data.data_address Pointer to area to return the
** requested record.
** .dmr_data.data_in_size Size of area for record.
**
** Outputs:
** dmr_cb
** .dmr_tid The tuple identifier of the record
** being returned.
** .dmr_data.data_address The record is stored here.
** .dmr_data.data_out_size The size of the returned record.
** .error.err_code One of the following error numbers.
** E_DM0000_OK
** E_DM000B_BAD_CB_LENGTH
** E_DM000C_BAD_CB_TYPE
** E_DM000F_BAD_DB_ACCESS_MODE
** E_DM0011_BAD_DB_NAME
** E_DM001A_BAD_FLAG
** E_DM001D_BAD_LOCATION_NAME
** E_DM002B_BAD_RECORD_ID
** E_DM003C_BAD_TID
** E_DM0042_DEADLOCK
** E_DM0044_DELETED_TID
** E_DM0047_UPDATED_TUPLE
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEEDED
** E_DM004D_LOCK_TIMER_EXPIRED
** E_DM0055_NONEXT
** E_DM0065_USER_INTR
** E_DM0064_USER_ABORT
** E_DM0073_RECORD_ACCESS_CONFLICT
** E_DM0074_NOT_POSITIONED
** E_DM008A_ERROR_GETTING_RECORD
** E_DM0100_DB_INCONSISTENT
** E_DM010C_TRAN_ABORTED
** E_DM0112_RESOURCE_QUOTA_EXCEEDED
** E_DM006E_NON_BTREE_GETPREV
**
** Returns:
** E_DB_OK Function completed normally.
** E_DB_WARN Function completed normally with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_ERROR Function completed abnormally
** with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_FATAL Function completed with a fatal
** error which must be handled
** immediately. The fatal status is in
** dmr_cb.err_code.
** History:
** 01-sep-85 (jennifer)
** Created new for jupiter.
** 17-dec-1985 (derek)
** Completed code.
** 28-jul-1989 (mikem)
** Added logging of database, table, and owner when we get an internal
** error.
** 15-aug-1989 (rogerk)
** Added support for Non-SQL Gateway. If getting record from a
** gateway secondary index, then make sure that record buffer is
** large enough to hold a record from the base table, as that is
** what the gateway returns. This is somewhat hokey, and would be
** better if the secondary index could actually describe the records
** being returned back, but...
** 15-oct-90 (linda)
** Integrate bug fix for gateway secondary index support: perform
** sanity check on table width *after* switching tcb's.
** 11-feb-1991 (linda)
** Check for dmr_char->char_id == DMR_TIDJOIN, if it does then set
** rcb->rcb_tidjoin = RCB_TIDJOIN. Part of gateway secondary index
** support.
** 22-apr-92 (schang)
** GW merge
** 30-apr-1991 (rickh)
** Removed the 11-feb-1991 tidjoin logic. Let stand the change in
** where table width calculation occurs.
** 22-jul-1991 (rickh)
** And now remove the table width calculation change that went in
** with the 11-feb-1991 tidjoin logic.
** 28-may-1993 (robf)
** Secure 2.0: Reworked old ORANGE code.
** 23-aug-1993 (bryanp)
** Fix a few cut-and-paste errors in some error message parameters.
** 31-jan-1994 (bryanp) B58487
** Handle failures in both dm2r_get and dm2r_unfix_pages.
** 30-aug-1994 (cohmi01)
** Add DMR_PREV support for FASTPATH rel. Error if not btree.
** 22-may-1995 (cohmi01)
** Add support for count-only, for aggregate optimisation.
** 21-aug-1995 (cohmi01)
** count-only aggregate code moved to dml!dmragg.c
** 22-nov-96 (stial01,dilma04)
** Row Locking Project:
** Unfix all pages before leaving DMF if row locking.
** 14-may-97 (dilma04)
** Cursor Stability Project:
** - upgrade isolation level from CS to RR, if DMR_SORT flag is set;
** - if isolation level is CS or RR, set RCB_CSRR_LOCK locking mode
** for the time of dm2r_get() call.
** 21-may-97 (stial01)
** Row locking: No more LK_PH_PAGE locks, so page(s) can stay fixed.
** 19-dec-97 (inkdo01)
** Changes for sorts which do NOT materialize results in temp tables.
** get is now directed straight to DMF sorter.
** 08-oct-98 (stial01)
** Deallocate load context after all records read from DMF sorter.
** 09-dec-98 (stial01)
** DMR_PKEY_PROJECTION: check for relspec BTREE not table_type which
** may be GATEWAY
** 11-aug-2003 (chash01)
** For RMS Gateway index table, add specific test to make sure
** dmr->dmr_data.data_in_size + sizeof(DM_TID)
** is no more than the value in table_width
** 12-Feb-2004 (schka24)
** Defend against someone doing a get on a partitioned master.
** 03-Nov-2004 (jenjo02)
** Relocated CSswitch from dmf_call to here; don't waste the
** call if Factotum thread.
** 11-Nov-2005 (jenjo02)
** Replaced dmx_show() with the more robust
** dmxCheckForInterrupt() to standardize external
** interrupt handling.
** 11-Sep-2006 (jonj)
** Don't dmxCheckForInterrupt if extended table as txn is
** likely in a recursive call and not at an atomic
** point in execution as required for LOGFULL_COMMIT.
** 13-Feb-2007 (kschendel)
** Replace CSswitch with cancel check.
** 11-Apr-2008 (kschendel)
** Roll arithmetic exceptions into caller specified ADFCB.
** This is part of getting DMF qual context out of QEF.
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: Don't change isolation level if crow_locking()
** 03-Mar-2010 (jonj)
** SIR 121619 MVCC, blob support:
** Set rcb_dmr_opcode here; dmpe bypasses dmf_call,
** which used to set it.
*/
DB_STATUS
dmr_get(
DMR_CB *dmr_cb)
{
DMR_CB *dmr = dmr_cb;
DMP_RCB *rcb;
DMP_TCB *tcb;
DML_XCB *xcb;
i4 flag;
i4 table_width;
DB_STATUS status, local_status;
i4 error, local_error;
DB_ERROR local_dberr;
CLRDBERR(&dmr->error);
for (status = E_DB_ERROR;;)
{
rcb = (DMP_RCB *)dmr->dmr_access_id;
if (dm0m_check((DM_OBJECT *)rcb, (i4)RCB_CB) == E_DB_OK)
{
if (rcb == NULL)
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("record")-1, "record");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
rcb->rcb_dmr_opcode = DMR_GET;
tcb = rcb->rcb_tcb_ptr;
if (tcb == NULL)
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("table")-1, "table");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
if (tcb->tcb_rel.relstat & TCB_IS_PARTITIONED)
{
uleFormat(&dmr->error, E_DM0022_BAD_MASTER_OP, NULL, ULE_LOG, NULL,
NULL, 0, NULL, &error, 3,
0, "dmrget",
sizeof(DB_OWN_NAME),tcb->tcb_rel.relowner.db_own_name,
sizeof(DB_TAB_NAME),tcb->tcb_rel.relid.db_tab_name);
break;
}
xcb = rcb->rcb_xcb_ptr;
if (xcb == NULL)
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("transaction")-1, "transaction");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
if (dmr->dmr_flags_mask & DMR_NEXT)
if (dmr->dmr_flags_mask & DMR_SORTGET) ;
else flag = DM2R_GETNEXT;
else if (dmr->dmr_flags_mask & DMR_BY_TID)
flag = DM2R_BYTID;
else if (dmr->dmr_flags_mask & DMR_CURRENT_POS)
{
/* flag = DM2R_BYPOSITION; */
flag = DM2R_BYTID;
dmr->dmr_tid = rcb->rcb_currenttid.tid_i4;
}
else if (dmr->dmr_flags_mask & DMR_PREV)
{
flag = DM2R_GETPREV;
if (dmr->dmr_flags_mask & DMR_RAAT)
flag |= DM2R_RAAT;
if (tcb->tcb_table_type != TCB_BTREE)
{
SETDBERR(&dmr->error, 0, E_DM006E_NON_BTREE_GETPREV);
break;
}
}
else
{
SETDBERR(&dmr->error, 0, E_DM001A_BAD_FLAG);
break;
}
/* Check for btree primary key projection */
if (dmr->dmr_flags_mask & DMR_PKEY_PROJECTION)
{
if ((tcb->tcb_rel.relspec == TCB_BTREE) &&
((tcb->tcb_rel.relstat & TCB_INDEX) == 0) &&
(flag == DM2R_GETNEXT || flag == DM2R_GETPREV))
flag |= DM2R_PKEY_PROJ;
else
{
SETDBERR(&dmr->error, 0, E_DM001A_BAD_FLAG);
break;
}
}
if (xcb->xcb_scb_ptr == NULL )
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("session")-1, "session");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
/* Check for external interrupts */
if ( xcb->xcb_scb_ptr->scb_ui_state && !tcb->tcb_extended )
dmxCheckForInterrupt(xcb, &error);
if (xcb->xcb_state == 0)
{
/*
** Make sure the caller's buffer is large enough to hold
** a record from this table.
**
** Note that for Gateway secondary index's, retrieves done
** will actually return records from the base table!!!! So
** if this is a get on a gateway 2nd index, make sure the
** buffer is large enough.
** Aug-4-2003 (chash01) The value relwid is sizeof(DM_TID) +
** sizeof(index column's length)., but the value in
** data_in_size is the size of base table columns. This leads
** to serious problem (looping) in DMFCALL() if the size of
** base table columns is less than the value in relwid. This
** RMS gateway specific problem will be tested specifically.
*/
table_width = tcb->tcb_rel.relwid;
if ( (dmr->dmr_data.data_address) &&
(
(tcb->tcb_rel.relgwid != GW_RMS &&
dmr->dmr_data.data_in_size >= table_width) ||
( tcb->tcb_rel.relgwid == GW_RMS &&
dmr->dmr_data.data_in_size + sizeof(DM_TID)
>= table_width)
)
)
{
dmr->dmr_data.data_out_size = table_width;
/* Upgrade isolation level to repeatable read if a
** cursor stability transaction is getting tuples
** to sort them for further update of this table,
** but not if MVCC crow_locking().
*/
if ( !crow_locking(rcb) )
{
if (dmr->dmr_flags_mask & DMR_SORT &&
rcb->rcb_access_mode == RCB_A_WRITE &&
rcb->rcb_iso_level == RCB_CURSOR_STABILITY)
{
rcb->rcb_iso_level = RCB_REPEATABLE_READ;
}
if (rcb->rcb_iso_level == RCB_CURSOR_STABILITY ||
rcb->rcb_iso_level == RCB_REPEATABLE_READ)
{
rcb->rcb_state |= RCB_CSRR_LOCK;
}
}
/*
** Quick troll for external interrupts.
*/
CScancelCheck(rcb->rcb_sid);
/* If this is a SORTGET, call DMF sorter to retrieve
** next row.
*/
if (dmr->dmr_flags_mask & DMR_SORTGET)
{
DM2R_L_CONTEXT *lct;
lct = (DM2R_L_CONTEXT *)tcb->tcb_lct_ptr;
status = dmse_get_record(lct->lct_srt,
&lct->lct_record, &dmr->error);
if (status == E_DB_OK)
{
MEcopy((PTR)lct->lct_record,
dmr->dmr_data.data_in_size,
(PTR)dmr->dmr_data.data_address);
}
else
{
/* eof or error, call dmse to finish up. */
local_status = dmse_end(lct->lct_srt, &local_dberr);
if (local_status != E_DB_OK)
{
dmr->error = local_dberr;
status = local_status;
}
/* Deallocate load context */
if (lct->lct_mct.mct_buffer != (PTR)0)
{
dm0m_deallocate((DM_OBJECT **)&lct->lct_mct.mct_buffer);
}
dm0m_deallocate((DM_OBJECT **)&tcb->tcb_lct_ptr);
tcb->tcb_lct_ptr = 0;
rcb->rcb_state &= ~RCB_LSTART;
}
return(status);
}
/* Regular ol' gets are handled here. */
xcb->xcb_scb_ptr->scb_qfun_errptr = &dmr->error;
status = dm2r_get(rcb, (DM_TID*)&dmr->dmr_tid, flag,
dmr->dmr_data.data_address, &dmr->error);
xcb->xcb_scb_ptr->scb_qfun_errptr = NULL;
/* If any arithmetic warnings to the RCB ADFCB during
** position, roll them into the caller's ADFCB.
*/
if (dmr->dmr_q_fcn != NULL && dmr->dmr_qef_adf_cb != NULL
&& rcb->rcb_adf_cb->adf_warncb.ad_anywarn_cnt > 0)
dmr_adfwarn_rollup((ADF_CB *)dmr->dmr_qef_adf_cb, rcb->rcb_adf_cb);
if ((tcb->tcb_rel.relstat & TCB_CONCUR))
{
local_status = dm2r_unfix_pages(rcb, &local_dberr);
if (local_status != E_DB_OK)
{
if (status == E_DB_OK)
{
status = local_status;
dmr->error = local_dberr;
}
else
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char * )NULL, (i4)0,
(i4 *)NULL, &local_error, 0);
}
}
}
rcb->rcb_state &= ~RCB_CSRR_LOCK;
if (status == E_DB_OK)
return (status);
}
else
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
}
else
{
if (xcb->xcb_state & XCB_USER_INTR)
SETDBERR(&dmr->error, 0, E_DM0065_USER_INTR);
else if (xcb->xcb_state & XCB_FORCE_ABORT)
SETDBERR(&dmr->error, 0, E_DM010C_TRAN_ABORTED);
else if (xcb->xcb_state & XCB_ABORT)
SETDBERR(&dmr->error, 0, E_DM0064_USER_ABORT);
else if (xcb->xcb_state & XCB_WILLING_COMMIT)
SETDBERR(&dmr->error, 0, E_DM0132_ILLEGAL_STMT);
}
}
else
SETDBERR(&dmr->error, 0, E_DM002B_BAD_RECORD_ID);
break;
}
if (dmr->error.err_code == E_DM0022_BAD_MASTER_OP ||
dmr->error.err_code == E_DM004B_LOCK_QUOTA_EXCEEDED ||
dmr->error.err_code == E_DM0112_RESOURCE_QUOTA_EXCEED)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_STMTABORT;
}
else if (dmr->error.err_code == E_DM0042_DEADLOCK ||
dmr->error.err_code == E_DM004A_INTERNAL_ERROR ||
dmr->error.err_code == E_DM0100_DB_INCONSISTENT)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_TRANABORT;
}
else if (dmr->error.err_code == E_DM010C_TRAN_ABORTED)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_FORCE_ABORT;
}
else if (dmr->error.err_code == E_DM0065_USER_INTR)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_USER_INTR;
rcb->rcb_state &= ~RCB_POSITIONED;
*(rcb->rcb_uiptr) &= ~SCB_USER_INTR;
}
else if (dmr->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmr->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL,
&error, 0);
uleFormat(NULL, E_DM904C_ERROR_GETTING_RECORD, NULL, ULE_LOG, NULL,
(char * )NULL, 0L, (i4 *)NULL, &error, 3,
sizeof(DB_DB_NAME), &rcb->rcb_tcb_ptr->tcb_dcb_ptr->dcb_name,
sizeof(DB_OWN_NAME), &rcb->rcb_tcb_ptr->tcb_rel.relowner,
sizeof(DB_TAB_NAME), &rcb->rcb_tcb_ptr->tcb_rel.relid
);
SETDBERR(&dmr->error, 0, E_DM008A_ERROR_GETTING_RECORD);
}
return (status);
}
/*{
** Name: dm1ibput - Adds a record to ISAM file.
**
** Description:
** This routine builds a ISAM table. Called by modify.
** The records are assumed to be in sorted order by key.
** There are two phases to building an ISAM file. First
** it builds only the main pages. Duplicates that exceed the
** main page space are written to pages of an overflow file.
** these overflow pages point back to the main pages they
** need to be linked after the entire data file with index
** has been built.
** After all main pages have been processed, the ISAM index
** is built. When this is finished, the overflow pages are
** read from the overflow file, written to the end of the
** main ISAM file and linked to the appropriate main page.
**
** This routine also assumes that the record is not compressed.
** It also assumes that the DUP flag will be set if this a
** duplicate key. The record is added to the page if there is
** room otherwise a new page is added(based on criteria above).
** Currently the TCB of the table modifying is used for
** attribute information needed by the low level routines.
** If attributes are allowed to be modified, then these
** build routines will not work.
**
** Inputs:
** mct Pointer to modify context.
** record Pointer to an area containing
** record to add.
** record_size Size of record in bytes.
** dup A flag indicating if this
** record is a duplicate key.
**
** Outputs:
** err_code A pointer to an area to return error
** codes if return status not E_DB_OK.
**
** Returns:
**
** E_DB_OK
** E_DB_ERROR
** E_DB_FATAL
**
** Exceptions:
** none
**
** Side Effects:
** none.
**
** History:
** 07-feb-86 (jennifer)
** Created for Jupiter.
** 29-may-89 (rogerk)
** Check status from dm1c_comp_rec calls.
** 08-Jun-1992 (kwatts)
** 6.5 MPF project. Replaced dm1c_add with dmpp_load calls and a
** dm1c_comp_rec with a call to the dmpp_compress accessor.
** 08-feb-1993 (rmuth)
** On overflow pages set DMPP_OVFL instead of DMPP_CHAIN which is
** used for overflow leaf pages.
** 21-June-1993 (rmuth)
** ISAM overflow chains were built the highest page number at
** the head of the list not allowing us to exploit readahead.
** This has been reversed, hence a chain of the form
** main_page.page_ovfl->289->288->287->nil, will now be
** main_page.page_ovfl->287->288->289->nil.
** 28-mar-1994 (mikem)
** bug #59831
** Fixed dm1bput() to check for errors from dm1xnewpage(). Previous
** to this change if you got a hard error (rather than a warning, ie.
** out-of-disk space) from dm1xnewpage() you would AV in dm1ibput(),
** due to a reference through a nil mct->mct_curdata pointer.
** 06-mar-1996 (stial01 for bryanp)
** Don't allocate tuple buffers on the stack.
** 06-may-1996 (thaju02)
** New Page Format Support:
** Change page header references to use macros.
** 20-may-1996 (ramra01)
** Added new param to the load accessor
** 03-june-1996 (stial01)
** Use DMPP_INIT_TUPLE_INFO_MACRO to init DMPP_TUPLE_INFO
** 18-jul-1996 (ramra01 for bryanp)
** Pass 0 as the current table version to dmpp_load.
** 09-oct-1996 (nanpr01)
** Donot return E_DB_OK always rather return status. Otherwise
** diskfull condition on modify of isam get segmentation fault.
** 22-nov-96 (stial01,dilma04)
** Row Locking Project:
** load accessor: changed DMPP_TUPLE_INFO param to table_version
** 10-mar-97 (stial01)
** dm1ibput: Use mct_crecord to compress a record
** 28-Feb-2001 (thaju02)
** Pass mct->mct_ver_number to dmpp_load. (B104100)
*/
DB_STATUS
dm1ibput(
DM2U_M_CONTEXT *mct,
char *record,
i4 record_size,
i4 dup,
DB_ERROR *dberr)
{
DB_STATUS status;
char *rec = record;
i4 next_page;
i4 rec_size;
DB_ERROR local_dberr;
CLRDBERR(dberr);
/*
** See if there is room on current page,
** there is always room for one record.
*/
rec_size = record_size;
if (mct->mct_data_rac.compression_type != TCB_C_NONE)
{
rec = mct->mct_crecord;
/* Note that the following accessor comes from the MCT and not the
** TCB. This is because we want the compression scheme of the table
** we are building, not the one we are building from.
*/
status = (*mct->mct_data_rac.dmpp_compress)(&mct->mct_data_rac,
record, record_size, rec, &rec_size);
if (status != E_DB_OK)
{
SETDBERR(dberr, 0, E_DM938B_INCONSISTENT_ROW);
return (status);
}
}
/* Add record to current main page. */
while ((status = dm1xbput(mct, mct->mct_curdata, rec, rec_size,
DM1C_LOAD_NORMAL, mct->mct_db_fill, 0,
mct->mct_ver_number, dberr))
== E_DB_WARN)
{
if (dup == 0)
{
/*
** Record is not a duplicate of the previous and the main
** page is full, start a new main page.
*/
status = dm1xnewpage(mct,
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata) + 1,
&mct->mct_curdata, dberr);
if (status == E_DB_INFO)
{
/* Current reserved area is full, allocate a new area. */
status = dm1xnextpage(mct, &mct->mct_startmain, dberr);
if (status != E_DB_OK)
break;
/* Update main page pointer for current chain. */
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata,
mct->mct_startmain);
for (next_page = DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type,
mct->mct_curdata);
next_page;
next_page = DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type,
mct->mct_curovfl))
{
status = dm1xreadpage(mct, DM1X_FORUPDATE, next_page,
&mct->mct_curovfl, dberr);
if (status != E_DB_OK)
break;
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type,
mct->mct_curovfl, mct->mct_startmain);
}
/* Get new main page. */
if (status == E_DB_OK)
status = dm1xreserve(mct,
mct->mct_startmain + mct->mct_kperpage, dberr);
if (status == E_DB_OK)
status = dm1xnewpage(mct, mct->mct_startmain,
&mct->mct_curdata, dberr);
if (status != E_DB_OK)
break;
}
else if (status)
{
break;
}
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata,
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type,
mct->mct_curdata) + 1);
continue;
}
/*
** Record is a duplicate, keep adding to the overflow page for
** this main page.
*/
status = E_DB_WARN;
/*
** If first overflow page then link it to the main page
*/
if ( DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curdata) ==
0 )
{
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if ( status != E_DB_OK )
break;
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curovfl,
DMPP_VPT_GET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata));
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curovfl,
DMPP_VPT_GET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curdata));
DMPP_VPT_SET_PAGE_STAT_MACRO(mct->mct_page_type, mct->mct_curovfl,
DMPP_DATA | DMPP_OVFL );
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curdata,
DMPP_VPT_GET_PAGE_PAGE_MACRO(mct->mct_page_type, mct->mct_curovfl));
}
/*
** If the current buffered overflow page is for this main data
** page then add the data.
*/
if ( DMPP_VPT_GET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curovfl) ==
DMPP_VPT_GET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata))
{
status = dm1xbput(mct, mct->mct_curovfl, rec, rec_size,
DM1C_LOAD_NORMAL, 0, 0,
mct->mct_ver_number, dberr);
}
/*
** If current overflow page is full then allocate a new overflow
** page, link it to the end of the overflow chain and add the
** data to the page
*/
if (status == E_DB_WARN)
{
/*
** Find out next page number we will allocate so that
** can fix up the overflow chain ptr on current overflow
** page before we release it
*/
status = dm1xnextpage( mct, &next_page, dberr );
if ( status != E_DB_OK )
break;
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curovfl,
next_page);
status = dm1xnewpage(mct, 0, &mct->mct_curovfl, dberr);
if ( status != E_DB_OK )
break;
DMPP_VPT_SET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curovfl,
DMPP_VPT_GET_PAGE_MAIN_MACRO(mct->mct_page_type, mct->mct_curdata));
DMPP_VPT_SET_PAGE_OVFL_MACRO(mct->mct_page_type, mct->mct_curovfl, 0); /* end of chain */
DMPP_VPT_SET_PAGE_STAT_MACRO(mct->mct_page_type, mct->mct_curovfl,
DMPP_DATA | DMPP_OVFL );
/*
** Add data to new page
*/
status = dm1xbput(mct, mct->mct_curovfl, rec, rec_size,
DM1C_LOAD_NORMAL, 0, 0,
mct->mct_ver_number, dberr);
}
break;
}
if (status != E_DB_OK)
log_error(E_DM9253_DM1I_BOTTOM, dberr);
return (status);
}
DB_STATUS
qss_bgn_session( QSF_RCB *qsf_rb )
{
STATUS status;
QSF_CB *scb = qsf_rb->qsf_scb;
#ifdef xDEBUG
i4 n;
QSF_CB *prevses;
QSF_CB *nextses;
#endif /* xDEBUG */
CLRDBERR(&qsf_rb->qsf_error);
Qsr_scb = (QSR_CB *) qsf_rb->qsf_server;
if (scb == NULL)
{
SETDBERR(&qsf_rb->qsf_error, 0, E_QS001B_NO_SESSION_CB);
return (E_DB_SEVERE);
}
/* Before anything, set up the session CB's standard header portion */
/* ---------------------------------------------------------------- */
scb->qsf_ascii_id = QSFCB_ASCII_ID;
scb->qsf_type = QSFCB_CB;
scb->qsf_length = sizeof(QSF_CB);
scb->qsf_prev = NULL;
/* Update the other structure information. */
/* ---------------------------------------- */
scb->qss_obj_list = (QSO_OBJ_HDR *) NULL;
scb->qss_master = (QSO_MASTER_HDR *) NULL;
scb->qss_snamed_list = (QSO_OBJ_HDR *) NULL;
/* Init the tracing vector */
/* ----------------------- */
ult_init_macro(&scb->qss_trstruct.trvect, 128, 0, 8);
/* Get exclusive access to QSF's SERVER CONTROL BLOCK */
/* -------------------------------------------------- */
if (CSp_semaphore((i4) TRUE, &Qsr_scb->qsr_psem))
{
SETDBERR(&qsf_rb->qsf_error, 0, E_QS0008_SEMWAIT);
/* Return now, instead of attempting to do a v() */
return (E_DB_ERROR);
}
/* Make the session known to QSF's server CB */
/* ----------------------------------------- */
if (Qsr_scb->qsr_se1st != (QSF_CB *) NULL)
Qsr_scb->qsr_se1st->qsf_prev = scb;
scb->qsf_next = Qsr_scb->qsr_se1st;
Qsr_scb->qsr_se1st = scb;
Qsr_scb->qsr_nsess++;
if (Qsr_scb->qsr_nsess > Qsr_scb->qsr_mxsess)
Qsr_scb->qsr_mxsess = Qsr_scb->qsr_nsess;
#ifdef xDEBUG
if (Qsr_scb->qsr_tracing && qst_trcheck(&scb, QSF_003_CHK_SCB_LIST))
{
/* This code just verifies that the session CB list is intact */
/* ---------------------------------------------------------- */
n = Qsr_scb->qsr_nsess;
prevses = NULL;
nextses = Qsr_scb->qsr_se1st;
while (n-- > 0)
{
if (nextses == NULL)
{
TRdisplay("*** Not enough QSF session CBs found");
TRdisplay(" while beginning a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
if ( (nextses->qsf_prev != prevses)
|| (nextses->qsf_ascii_id != QSFCB_ASCII_ID)
|| (nextses->qsf_type != QSFCB_CB)
|| (nextses->qsf_length != sizeof(QSF_CB))
)
{
TRdisplay("*** QSF's session CB list found trashed");
TRdisplay(" while beginning a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
prevses = nextses;
nextses = nextses->qsf_next;
}
if (nextses != NULL)
{
TRdisplay("*** Too many QSF session CBs detected");
TRdisplay(" while beginning a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
}
#endif /* xDEBUG */
status = E_DB_OK;
/* Release exclusive access to QSF's SERVER CONTROL BLOCK */
/* ------------------------------------------------------ */
if (CSv_semaphore(&Qsr_scb->qsr_psem))
{
status = E_DB_ERROR;
SETDBERR(&qsf_rb->qsf_error, 0, E_QS0004_SEMRELEASE);
}
return (status);
}
/*{
** Name: dmv_rertree_rep - Redo the replace of a rtree key
**
** Description:
** This function replaces a new key in a rtree index for the recovery of a
** replace record operation.
**
** Inputs:
** dmve Pointer to dmve control block.
** tabio Pointer to table io control block
** page Pointer to the page to which to insert
** log_record Pointer to the log record
** plv Pointer to page level accessor
** recovery_action Recovery type
**
** Outputs:
** error Pointer to Error return area
** Returns:
** E_DB_OK
** E_DB_ERROR
**
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 19-sep-1996 (shero03)
** Created from dmvebtpt.c
** 21-may-1997 (stial01)
** Added flags arg to dm0p_unmutex call(s).
*/
static DB_STATUS
dmv_rertree_rep(
DMVE_CB *dmve,
DMP_TABLE_IO *tabio,
DMP_PINFO *pinfo,
DM_TID *bid,
DM0L_RTREP *log_rec,
DMPP_ACC_PLV *plv,
i4 recovery_action)
{
LG_LSN *log_lsn = &log_rec->rtr_header.lsn;
DB_STATUS status = E_DB_OK;
i4 child = bid->tid_tid.tid_line;
i4 page_type = log_rec->rtr_pg_type;
i4 ix_compressed;
char *old_key;
char *new_key;
char *key;
i4 *err_code = &dmve->dmve_error.err_code;
DMPP_PAGE *page = pinfo->page;
CLRDBERR(&dmve->dmve_error);
/*
** If there is nothing to recover, just return.
*/
if (page == NULL)
return (E_DB_OK);
old_key = &log_rec->rtr_vbuf[log_rec->rtr_stack_size];
new_key = old_key + log_rec->rtr_stack_size + log_rec->rtr_okey_size;
ix_compressed = DM1CX_UNCOMPRESSED;
if (log_rec->rtr_cmp_type != TCB_C_NONE)
ix_compressed = DM1CX_COMPRESSED;
/* ****** FIXME (kschendel)
** Maybe I'm missing something obvious, but I don't see it writing the
** rtrep CLR when it's an UNDO...
** Do we somehow not need it? or is it a bug?
*/
/*
** Mutex the page while updating it.
*/
dmveMutex(dmve, pinfo);
/*
** If redoing the replace operation
** use the new mbr value
** If undoing the replace operation
** use the old mbr value
*/
switch (dmve->dmve_action)
{
case DMVE_DO:
case DMVE_REDO:
key = new_key;
break;
case DMVE_UNDO :
key = old_key;
break;
}
/*
** Replace the mbr with the new value.
*/
status = dm1cxput(page_type, log_rec->rtr_page_size, page,
ix_compressed, DM1C_DIRECT,
&dmve->dmve_tran_id, (u_i2)0, (i4)0, child,
key, log_rec->rtr_nkey_size, &log_rec->rtr_tid,
(i4)0);
if (status != E_DB_OK)
{
dm1cxlog_error(E_DM93E4_BAD_INDEX_PUT, (DMP_RCB *)NULL, page,
page_type, log_rec->rtr_page_size, child);
}
/*
** Write the LSN of the Replace log record to the updated page.
*/
DM1B_VPT_SET_PAGE_LOG_ADDR_MACRO(page_type, page, *log_lsn);
DM1B_VPT_SET_PAGE_STAT_MACRO(page_type, page, DMPP_MODIFY);
dmveUnMutex(dmve, pinfo);
if (status != E_DB_OK)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9650_REDO_BTREE_PUT);
return(E_DB_ERROR);
}
return(E_DB_OK);
}
DB_STATUS
qss_end_session( QSF_RCB *qsf_rb)
{
STATUS status = E_DB_OK;
QSF_CB *scb = qsf_rb->qsf_scb;
QSF_RCB int_qsf_rb;
QSO_OBJ_HDR *objects = (QSO_OBJ_HDR *) scb->qss_obj_list;
QSO_OBJ_HDR *obj;
i4 error;
i4 count;
#ifdef xDEBUG
QSF_CB *prevses;
QSF_CB *nextses;
i4 trace_003;
#endif /* xDEBUG */
CLRDBERR(&qsf_rb->qsf_error);
/* Toss any uncommitted named session-owned objects first.
** There shouldn't be any, if QEF did its job right, but who knows.
** The important thing is that we NOT have objects pretending to be
** on a session list when the session has ended.
*/
int_qsf_rb.qsf_sid = qsf_rb->qsf_sid;
int_qsf_rb.qsf_scb = scb;
CLRDBERR(&int_qsf_rb.qsf_error);
(void) qsf_clrsesobj(&int_qsf_rb);
/*
** Look for orphaned objects that should not exist and destroy unshareable
** named objects.
*/
count = QSF_MAX_ORPHANS;
while (objects != (QSO_OBJ_HDR *) NULL && --count > 0)
{
STATUS status;
QSO_OBJ_HDR *current_obj = objects;
objects = objects->qso_obnext;
if (current_obj->qso_obid.qso_lname == 0)
{
char *type;
switch (current_obj->qso_obid.qso_type)
{
case QSO_QTEXT_OBJ:
type = "Query Text";
break;
case QSO_QTREE_OBJ:
type = "Query Tree";
break;
case QSO_QP_OBJ:
type = "Query Plan";
break;
case QSO_SQLDA_OBJ:
type = "SQLDA";
break;
case QSO_ALIAS_OBJ:
type = "Alias";
break;
default:
type = "Unknown";
break;
}
/* Report the orphaned object. */
uleFormat( &int_qsf_rb.qsf_error, E_QS001E_ORPHANED_OBJ,
NULL, (i4) ULE_LOG, NULL,
NULL, (i4) 0, NULL, &error, 1, 0, type);
}
int_qsf_rb.qsf_obj_id = current_obj->qso_obid;
int_qsf_rb.qsf_lk_state = QSO_EXLOCK;
int_qsf_rb.qsf_sid = qsf_rb->qsf_sid;
int_qsf_rb.qsf_scb = scb;
status = qso_lock(&int_qsf_rb);
if (DB_FAILURE_MACRO(status))
{
uleFormat( &int_qsf_rb.qsf_error, 0, NULL, (i4) ULE_LOG,
NULL, NULL, (i4) 0, NULL, &error, 0);
}
int_qsf_rb.qsf_lk_id = current_obj->qso_lk_id;
status = qso_destroy(&int_qsf_rb);
if (DB_FAILURE_MACRO(status))
{
uleFormat( &int_qsf_rb.qsf_error, 0, NULL, (i4) ULE_LOG,
NULL, NULL, (i4) 0, NULL, &error, 0);
}
}
if (count <= 0)
{
uleFormat( &int_qsf_rb.qsf_error, E_QS001F_TOO_MANY_ORPHANS,
NULL, (i4) ULE_LOG,
NULL, NULL, (i4) 0, NULL, &error, 0);
}
#ifdef xDEBUG
if (Qsr_scb->qsr_tracing && qst_trcheck(&scb, QSF_001_ENDSES_OBJQ))
{
DB_ERROR save_err = qsf_rb->qsf_error;
TRdisplay("<<< Dumping QSF object queue before ending session >>>\n");
(void) qsd_obq_dump(qsf_rb);
qsf_rb->qsf_error = save_err;
}
trace_003 = ( Qsr_scb->qsr_tracing
&& qst_trcheck(&scb, QSF_003_CHK_SCB_LIST)
); /* Must check before
** we blow away the
** the session CB.
*/
#endif /* xDEBUG */
/* First, wait to get exclusive access to QSF's SERVER CONTROL BLOCK */
/* ----------------------------------------------------------------- */
if (CSp_semaphore((i4) TRUE, &Qsr_scb->qsr_psem))
{
SETDBERR(&qsf_rb->qsf_error, 0, E_QS0008_SEMWAIT);
/* Return now, instead of attempting to do a v() */
return (E_DB_ERROR);
}
/* Do a quick run through the global LRU-able (persistent) object list
** and clear the session if it's us. This indicates that the object
** is not on any session list, and prevents someone else from believing
** a stale qso_session.
*/
obj = Qsr_scb->qsr_1st_lru;
while (obj != NULL)
{
if (obj->qso_session == scb)
obj->qso_session = NULL;
obj = obj->qso_lrnext;
}
/* Now remove this session from QSF's server CB */
/* -------------------------------------------- */
if (scb == Qsr_scb->qsr_se1st)
Qsr_scb->qsr_se1st = scb->qsf_next;
else
scb->qsf_prev->qsf_next = scb->qsf_next;
if (scb->qsf_next != NULL)
scb->qsf_next->qsf_prev = scb->qsf_prev;
scb->qsf_prev = scb->qsf_next = NULL;
Qsr_scb->qsr_nsess--;
#ifdef xDEBUG
if (trace_003)
{
/* This code just verifies that the session CB list is intact */
/* ---------------------------------------------------------- */
count = Qsr_scb->qsr_nsess;
prevses = NULL;
nextses = Qsr_scb->qsr_se1st;
while (count-- > 0)
{
if (nextses == NULL)
{
TRdisplay("*** Not enough QSF session CBs found");
TRdisplay(" while ending a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
if ( (nextses->qsf_prev != prevses)
|| (nextses->qsf_ascii_id != QSFCB_ASCII_ID)
|| (nextses->qsf_type != QSFCB_CB)
|| (nextses->qsf_length != sizeof(QSF_CB))
)
{
TRdisplay("*** QSF's session CB list found trashed");
TRdisplay(" while ending a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
prevses = nextses;
nextses = nextses->qsf_next;
}
if (nextses != NULL)
{
TRdisplay("*** Too many QSF session CBs detected");
TRdisplay(" while ending a session.\n");
SETDBERR(&qsf_rb->qsf_error, 0, E_QS9999_INTERNAL_ERROR);
return (E_DB_FATAL);
}
}
#endif /* xDEBUG */
status = E_DB_OK;
/* Release exclusive access to QSF's SERVER CONTROL BLOCK */
/* ------------------------------------------------------ */
if (CSv_semaphore(&Qsr_scb->qsr_psem))
{
status = E_DB_ERROR;
SETDBERR(&qsf_rb->qsf_error, 0, E_QS0004_SEMRELEASE);
}
return (status);
}
/*{
** Name: dmr_position - Position a record.
**
** INTERNAL DMF call format: status = dmr_position(&dmr_cb);
**
** EXTERNAL call format: status = dmf_call(DMR_POSITION,&dmr_cb);
**
** Description:
**
** Note: A position must be done before a table can be read.
**
** The act of positioning a table is used to convey information about the
** set of records that are to be retrieved by succeeding get operations.
** There are two basic modes of operation for position: position for
** full scan of table or position based on primary key qualifications.
** Positioning for a full scan means that all records of the table will be
** returned. Positioning for qualification will return records that
** satisfy the qualification. A qualification involves comparisons of
** attributes that are member of the primary key. These attributes can
** be compared for >, >=, ==, < or <=. The least restrictive set of
** qualification is used if there are conflicts. (Example: If position
** is presented the two following qualifications: (a >= ?, b > ?) where
** a and b are members of the key, position would use (a >= ? ,b >= ?).
** If an attribute is mentioned more then once the extra qualifications are
** ignored. The data type of the value passed is determined from the
** attribute number. The data type is assumed to be of the length of the
** same length and type as the attribute it is operating on.
**
** For each of the position operations a qualification function can be
** given. The qualification function will be called when a record has
** been retrieved and it has passed the key qualification if one was
** given. If the qualification function returns TRUE, the record is
** returned, otherwise the next record is processed. This allows the
** caller to add qualifications on non-key fields and have them processed
** by the get operation.
**
** The special position operation DMR_TID, allows a the position of
** heap temporary to be returned to a previous tid value. The next
** fetch will return the record associated with tid, and successive fetchs
** will see successive records.
**
** The special position operation DMR_REPOSITION, allows the position of
** a scan on any structure to be repositioned usiing the same key used
** in the last position request if this request was for DMR_QUAL or
** DMR_REPOSITION. The same set of records is returned excpet for
** records that have been changed or deleted.
**
** Inputs:
** dmr_cb
** .type Must be set to DMR_RECORD_CB
** .length Must be at least
** sizeof(DMR_RECORD_CB) bytes.
** .dmr_flags_mask Must be zero.
** .dmr_position_type Either DMR_TID, DMR_ALL, DMR_QUAL,
** DMR_REPOSITION, DMR_LAST or
** DMR_ENDQUAL.
** (See above description).
** .dmr_access_id Record access identifer returned
** from DMT_OPEN that identifies a
** table.
** .dmr_tid If dmr_position_type = DMR_TID,
** field is used as a tuple identifer.
** .dmr_attr_desc.ptr_address If dmr_position_type = DMR_QUAL,
** then
** this points to an area containing
** an array of DMR_ATTR_ENTRY's. See
** below for a description of
** <dmr_attr_desc>.
** .dmr_attr_desc.ptr_size Length of entry of
** dmr_attr_desc.data_address
** in bytes.
** .dmr_attr_desc.ptr_in_count Number of entries in attr array.
** .dmr_q_fcn Zero or address of function used to
** qualify records.
** .dmr_q_arg Argument to be passed to
** dmr_qual_fcn when called.
**
** <dmr_attr_desc> is of type DMR_ATTR_ENTRY
** .attr_number The attribute number that this
** restriction applies to.
** .attr_operation A binary comparision operator
** in the set: DMR_OP_EQ, DMR_OP_LTE
** DMR_OP_GTE, DMR_OP_INTERSECTS,
** DMR_OP_OVERLAY, DMR_OP_INSIDE,
** DMR_OP_CONTAINS.
** .attr_value_ptr A pointer to the value for this
** restriction.
**
** Outputs:
** dmr_cb
** .error.err_code One of the following error numbers.
** E_DM0000_OK
** E_DM000B_BAD_CB_LENGTH
** E_DM000C_BAD_CB_TYPE
** E_DM001A_BAD_FLAG
** E_DM002B_BAD_RECORD_ID
** E_DM003C_BAD_TID
** E_DM0042_DEADLOCK
** E_DM0044_DELETED_TID
** E_DM0047_CHANGED_TUPLE
** E_DM004A_INTERNAL_ERROR
** E_DM004B_LOCK_QUOTA_EXCEEDED
** E_DM004D_LOCK_TIMER_EXPIRED
** E_DM0065_USER_INTR
** E_DM0064_USER_ABORT
** E_DM008E_ERROR_POSITIONING
** E_DM004B_LOCK_QUOTA_EXCEEDED
** E_DM0100_DB_INCONSISTENT
** E_DM010C_TRAN_ABORTED
** E_DM0112_RESOURCE_QUOTA_EXCEEDED
**
** Returns:
** E_DB_OK Function completed normally.
** E_DB_WARN Function completed normally with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_ERROR Function completed abnormally
** with a
** termination status which is in
** dmr_cb.err_code.
** E_DB_FATAL Function completed with a fatal
** error which must be handled
** immediately. The fatal status is in
** dmr_cb.err_code.
** History:
** 01-sep-1985 (jennifer)
** Created new for jupiter.
** 17-dec-1985 (derek)
** Completed code.
** 1-dec-1988 (rogerk)
** Don't continue after finding bad attribute array entry.
** 17-dec-1990 (jas)
** Smart Disk project integration:
** Support DMR_SDSCAN, requesting a Smart Disk scan. In a Smart
** Disk scan, the "key pointer" becomes a pointer to a
** (hardware-dependent) block encoding the search condition;
** the "key count" is the length in bytes of the encoded
** search condition.
** 05-dec-1992 (kwatts)
** Smart Disk enhancements. There is now a different structure in
** the DMR CB to set key_descriptor to.
** 31-jan-1994 (bryanp) B58493
** Handle failures in both dm2r_position and dm2r_unfix_pages.
** 5-may-95 (stephenb/lewda02)
** Add support for DMR_LAST using DM2R_LAST.
** 22-nov-96 (stial01,dilma04)
** Row Locking Project:
** Unfix all pages before leaving DMF if row locking.
** 14-may-97 (dilma04)
** Cursor Stability Project:
** If isolation level is CS or RR, set RCB_CSRR_LOCK locking mode
** for the time of dm2r_position() call.
** 21-may-97 (stial01)
** Row locking: No more LK_PH_PAGE locks, so page(s) can stay fixed.
** 23-jul-1998 (nanpr01)
** Making position code aware of the scanning direction for backward
** scan.
** 01-Mar-2004 (jenjo02)
** Position requests on Partition Masters are illegal.
** 11-Nov-2005 (jenjo02)
** Replaced dmx_show() with the more robust
** dmxCheckForInterrupt() to standardize external
** interrupt handling.
** 11-Sep-2006 (jonj)
** Don't dmxCheckForInterrupt if extended table as txn is
** likely in a recursive call and not at an atomic
** point in execution as required for LOGFULL_COMMIT.
** 15-Jan-2010 (jonj)
** SIR 121619 MVCC: No CSRR_LOCK when crow_locking().
** 03-Mar-2010 (jonj)
** SIR 121619 MVCC, blob support:
** Set rcb_dmr_opcode here; dmpe bypasses dmf_call,
** which used to set it.
*/
DB_STATUS
dmr_position(
DMR_CB *dmr_cb)
{
DM_TID tid;
DMR_CB *dmr = dmr_cb;
DMP_RCB *rcb;
DMP_TCB *t;
DML_XCB *xcb;
DMR_ATTR_ENTRY *k;
DMR_ATTR_ENTRY *ka;
DMR_ATTR_ENTRY karray[DB_MAX_COLS];
i4 i;
i4 flag;
DB_STATUS status, local_status;
i4 error,local_error;
char *key_descriptor = (char *) karray;
i4 key_count = dmr->dmr_attr_desc.ptr_in_count;
DB_ERROR local_dberr;
CLRDBERR(&dmr->error);
for (status = E_DB_ERROR;;)
{
rcb = (DMP_RCB *)dmr->dmr_access_id;
if (dm0m_check((DM_OBJECT *)rcb, (i4)RCB_CB) == E_DB_OK)
{
rcb->rcb_dmr_opcode = DMR_POSITION;
t = rcb->rcb_tcb_ptr;
if (t->tcb_rel.relstat & TCB_IS_PARTITIONED)
{
uleFormat(&dmr->error, E_DM0022_BAD_MASTER_OP, NULL, ULE_LOG, NULL,
NULL, 0, NULL, &error, 3,
0, "dmrpos",
sizeof(DB_OWN_NAME),t->tcb_rel.relowner.db_own_name,
sizeof(DB_TAB_NAME),t->tcb_rel.relid.db_tab_name);
break;
}
if ((dmr->dmr_position_type == DMR_QUAL) ||
(dmr->dmr_position_type == DMR_ENDQUAL))
{
if (dmr->dmr_position_type == DMR_QUAL)
flag = DM2R_QUAL;
else
flag = DM2R_ENDQUAL;
if (dmr->dmr_attr_desc.ptr_address == 0 ||
dmr->dmr_attr_desc.ptr_size < sizeof(DMR_ATTR_ENTRY)||
dmr->dmr_attr_desc.ptr_in_count == 0 ||
dmr->dmr_attr_desc.ptr_in_count > DB_MAX_COLS)
{
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
ka = karray;
for (i = 0; i < dmr->dmr_attr_desc.ptr_in_count; i++)
{
DMR_ATTR_ENTRY *k =
((DMR_ATTR_ENTRY **)dmr->dmr_attr_desc.ptr_address)[i];
ka->attr_number = k->attr_number;
ka->attr_operator = k->attr_operator;
ka->attr_value = k->attr_value;
ka++;
if (k->attr_number == 0 ||
k->attr_number > t->tcb_rel.relatts ||
k->attr_operator == 0 ||
k->attr_operator > DMR_OP_CONTAINS)
{
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
}
if (dmr->error.err_code)
break;
}
else if (dmr->dmr_position_type == DMR_ALL)
flag = DM2R_ALL;
else if (dmr->dmr_position_type == DMR_TID)
{
flag = DM2R_BYTID;
tid.tid_i4 = ((DM_TID *)&dmr->dmr_tid)->tid_i4;
}
else if (dmr->dmr_position_type == DMR_REPOSITION)
flag = DM2R_REPOSITION;
else if (dmr->dmr_position_type == DMR_LAST)
flag = DM2R_LAST;
else
{
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
xcb = rcb->rcb_xcb_ptr;
if ( dm0m_check((DM_OBJECT *)xcb, (i4)XCB_CB) )
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("transaction")-1, "transaction");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
if ( dm0m_check((DM_OBJECT *)xcb->xcb_scb_ptr, (i4)SCB_CB) )
{
uleFormat(NULL, E_DM00E0_BAD_CB_PTR, (CL_ERR_DESC *)NULL, ULE_LOG,
NULL, (char *)NULL, (i4)0, (i4 *)NULL, &error, 1,
sizeof("session")-1, "session");
SETDBERR(&dmr->error, 0, E_DM002A_BAD_PARAMETER);
break;
}
/* Check for external interrupts */
if ( xcb->xcb_scb_ptr->scb_ui_state && !t->tcb_extended )
dmxCheckForInterrupt(xcb, &error);
if (xcb->xcb_state == 0)
{
if ( !crow_locking(rcb) &&
(rcb->rcb_iso_level == RCB_CURSOR_STABILITY ||
rcb->rcb_iso_level == RCB_REPEATABLE_READ) )
{
rcb->rcb_state |= RCB_CSRR_LOCK;
}
/* Informed Read-Ahead */
if ((flag & DM2R_QUAL || flag & DM2R_ENDQUAL) &&
(dmr->dmr_s_estimated_records > 0))
{
f8 scanfactor =
dmf_svcb->svcb_scanfactor[DM_CACHE_IX(t->tcb_rel.relpgsize)];
/* Override the read-ahead decisions */
if (((t->tcb_rel.relstat & TCB_INDEX) == 0) &&
(t->tcb_tperpage != 0) &&
(dmr->dmr_s_estimated_records/t->tcb_tperpage <
0.5 * scanfactor))
flag |= DM2R_NOREADAHEAD;
else {
if ((t->tcb_rel.relstat & TCB_INDEX) &&
(t->tcb_rel.relspec == TCB_BTREE) &&
(t->tcb_kperleaf != 0) &&
(dmr->dmr_s_estimated_records/t->tcb_kperleaf <
0.5 * scanfactor))
flag |= DM2R_NOREADAHEAD;
else
if ((t->tcb_rel.relstat & TCB_INDEX) &&
(t->tcb_tperpage != 0) &&
(dmr->dmr_s_estimated_records/t->tcb_tperpage <
0.5 * scanfactor))
flag |= DM2R_NOREADAHEAD;
}
}
/* Set qualification stuff in RCB from caller DMR_CB.
** This will persist thru all upcoming gets as well.
*/
rcb->rcb_f_rowaddr = dmr->dmr_q_rowaddr;
rcb->rcb_f_qual = dmr->dmr_q_fcn;
rcb->rcb_f_arg = dmr->dmr_q_arg;
rcb->rcb_f_retval = dmr->dmr_q_retval;
MEfill(sizeof(ADI_WARN), 0, &rcb->rcb_adf_cb->adf_warncb);
xcb->xcb_scb_ptr->scb_qfun_errptr = &dmr->error;
status = dm2r_position(rcb, flag,
(DM2R_KEY_DESC *)key_descriptor, key_count,
&tid, &dmr->error);
xcb->xcb_scb_ptr->scb_qfun_errptr = NULL;
/* If any arithmetic warnings to the RCB ADFCB during
** position, roll them into the caller's ADFCB.
*/
if (dmr->dmr_q_fcn != NULL && dmr->dmr_qef_adf_cb != NULL
&& rcb->rcb_adf_cb->adf_warncb.ad_anywarn_cnt > 0)
dmr_adfwarn_rollup((ADF_CB *)dmr->dmr_qef_adf_cb, rcb->rcb_adf_cb);
if ((t->tcb_rel.relstat & TCB_CONCUR))
{
local_status = dm2r_unfix_pages(rcb, &local_dberr);
if (local_status != E_DB_OK)
{
if (status == E_DB_OK)
{
status = local_status;
dmr->error = local_dberr;
}
else
{
uleFormat(&local_dberr, 0, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, (char * )NULL, (i4)0,
(i4 *)NULL, &local_error, 0);
}
}
}
rcb->rcb_state &= ~RCB_CSRR_LOCK;
if (status == E_DB_OK)
return (status);
}
else
{
if (xcb->xcb_state & XCB_USER_INTR)
SETDBERR(&dmr->error, 0, E_DM0065_USER_INTR);
else if (xcb->xcb_state & XCB_FORCE_ABORT)
SETDBERR(&dmr->error, 0, E_DM010C_TRAN_ABORTED);
else if (xcb->xcb_state & XCB_ABORT)
SETDBERR(&dmr->error, 0, E_DM0064_USER_ABORT);
else if (xcb->xcb_state & XCB_WILLING_COMMIT)
SETDBERR(&dmr->error, 0, E_DM0132_ILLEGAL_STMT);
}
}
else
SETDBERR(&dmr->error, 0, E_DM002B_BAD_RECORD_ID);
break;
}
if (dmr->error.err_code == E_DM004B_LOCK_QUOTA_EXCEEDED ||
dmr->error.err_code == E_DM0112_RESOURCE_QUOTA_EXCEED)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_STMTABORT;
}
else if (dmr->error.err_code == E_DM0042_DEADLOCK ||
dmr->error.err_code == E_DM004A_INTERNAL_ERROR ||
dmr->error.err_code == E_DM0100_DB_INCONSISTENT)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_TRANABORT;
}
else if (dmr->error.err_code == E_DM010C_TRAN_ABORTED)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_FORCE_ABORT;
}
else if (dmr->error.err_code == E_DM0065_USER_INTR)
{
rcb->rcb_xcb_ptr->xcb_state |= XCB_USER_INTR;
rcb->rcb_state &= ~RCB_POSITIONED;
*(rcb->rcb_uiptr) &= ~SCB_USER_INTR;
}
else if (dmr->error.err_code > E_DM_INTERNAL)
{
uleFormat( &dmr->error, 0, NULL, ULE_LOG , NULL,
(char * )NULL, 0L, (i4 *)NULL, &error, 0);
SETDBERR(&dmr->error, 0, E_DM008E_ERROR_POSITIONING);
}
return (status);
}
/*{
** Name: dmv_unbtree_del - UNDO of a delete key operation.
**
** Description:
** This function removes a key from a btree index for the recovery of a
** delete record operation.
**
** Inputs:
** dmve Pointer to dmve control block.
** tabio Pointer to table io control block
** page Pointer to page on which row was insert
**
** Outputs:
** error Pointer to Error return area
** Returns:
** E_DB_OK
** E_DB_ERROR
**
** Exceptions:
** none
**
** Side Effects:
** none
**
** History:
** 14-dec-1992 (rogerk)
** Written for 6.5 recovery.
** 18-jan-1992 (rogerk)
** Add check in undo routine for case when null page pointer is
** passed because undo was found to be not needed.
** 15-mar-1993 (jnash)
** Check dmve->dmve_logging to determine if logging required.
** 26-apr-1993 (bryanp)
** 6.5 Cluster support:
** Replace all uses of DM_LOG_ADDR with LG_LA or LG_LSN.
** 15-apr-1994 (chiku)
** Bug56702: return logfull indication.
** 06-may-1996 (thaju02 & nanpr01)
** New page format support: change page header references to
** use macros.
** 22-nov-96 (stial01,dilma04)
** Row Locking Project:
** Allocate space only if space reclaimed
** 27-feb-97 (stial01)
** dmv_unbtree_del() allocate parameter TRUE If dm1cxallocate needed
** Log key in CLR, needed for row locking
** 21-may-1997 (stial01)
** Added flags arg to dm0p_unmutex call(s).
*/
static DB_STATUS
dmv_unbtree_del(
DMVE_CB *dmve,
DMP_TABLE_IO *tabio,
DMP_PINFO *pinfo,
DM_TID *bid,
bool allocate)
{
DM0L_BTDEL *log_rec = (DM0L_BTDEL *)dmve->dmve_log_rec;
DB_STATUS status = E_DB_OK;
DM_LINE_IDX childkey;
DM_LINE_IDX childtid;
LG_LSN lsn;
DM_TID temptid;
i4 temppartno;
i4 page_type = log_rec->btd_pg_type;
i4 ix_compressed;
char *key;
i4 flags;
i4 loc_id;
i4 loc_config_id;
bool index_update;
i4 update_mode;
i4 local_err;
i4 *err_code = &dmve->dmve_error.err_code;
LG_LRI lri;
DMPP_PAGE *page = pinfo->page;
CLRDBERR(&dmve->dmve_error);
/*
** If there is nothing to recover, just return.
*/
if (page == NULL)
return (E_DB_OK);
key = &log_rec->btd_vbuf[0];
index_update = ((DM1B_VPT_GET_PAGE_STAT_MACRO(page_type, page) &
DMPP_INDEX) != 0);
ix_compressed = DM1CX_UNCOMPRESSED;
if (log_rec->btd_cmp_type != TCB_C_NONE)
ix_compressed = DM1CX_COMPRESSED;
/*
** Get information on the location to which the update is being made.
*/
loc_id = DM2F_LOCID_MACRO(tabio->tbio_loc_count,
(i4) DM1B_VPT_GET_PAGE_PAGE_MACRO(page_type, page));
loc_config_id = tabio->tbio_location_array[loc_id].loc_config_id;
/*
** Deletes to non-leaf index pages actually effect more than one entry
** on the page. The logged bid describes the entry from which the
** TID pointer is deleted. The key entry is deleted from the previous
** position (if there is one).
*/
if (index_update)
{
childtid = log_rec->btd_bid_child;
childkey = log_rec->btd_bid_child;
}
else
{
childtid = bid->tid_tid.tid_line;
childkey = bid->tid_tid.tid_line;
}
/* Index pages do not contain partition numbers */
temppartno = 0;
if (index_update && (childkey != 0))
{
childkey--;
dm1cxtget(page_type, log_rec->btd_page_size, page,
childkey, &temptid, &temppartno);
}
/*
** It would be nice to verify that the child position logged (or calculated
** by recovery) is the correct spot in the table, but since we have
** no attribute or key information to go on, we cannot do key comparisons.
** We must trust that the values are correct.
**
** We assume here that there is sufficient space on the page. If not,
** then the dm1cx calls below will catch the error.
** Since we will have backed out any inserts to this page that may have
** occurred after the delete, we should be assured that the the row will
** still fit. If it doesn't, then a fatal recovery error will occur.
*/
/*
** Mutex the page. This must be done prior to the log write.
*/
dmveMutex(dmve, pinfo);
/*
** Check direction of recovery operation:
**
** If this is a normal Undo, then we log the CLR for the operation
** and write the LSN of this CLR onto the newly updated page (unless
** dmve_logging is turned off - in which case the rollback is not
** logged and the page lsn is unchanged).
**
** If the record being processed is itself a CLR, then we are REDOing
** an update made during rollback processing. Updates are not relogged
** in redo processing and the LSN is moved forward to the LSN value of
** of the original update.
**
** As of release OpenIngres 2.0, we need the key value in CLRs as well,
** because of row locking.
*/
if ((log_rec->btd_header.flags & DM0L_CLR) == 0)
{
if (dmve->dmve_logging)
{
flags = (log_rec->btd_header.flags | DM0L_CLR);
/* Extract previous page change info */
DM1B_VPT_GET_PAGE_LRI_MACRO(log_rec->btd_pg_type, page, &lri);
status = dm0l_btdel(dmve->dmve_log_id, flags,
&log_rec->btd_tbl_id,
tabio->tbio_relid, 0,
tabio->tbio_relowner, 0,
log_rec->btd_pg_type, log_rec->btd_page_size,
log_rec->btd_cmp_type,
log_rec->btd_loc_cnt, loc_config_id,
bid, childkey, &log_rec->btd_tid, log_rec->btd_key_size, key,
&log_rec->btd_header.lsn, &lri, log_rec->btd_partno,
log_rec->btd_btflags, &dmve->dmve_error);
if (status != E_DB_OK)
{
dmveUnMutex(dmve, pinfo);
/*
* Bug56702: return logfull indication.
*/
dmve->dmve_logfull = dmve->dmve_error.err_code;
uleFormat(&dmve->dmve_error, 0, (CL_ERR_DESC *)NULL, ULE_LOG, NULL,
(char *)NULL, (i4)0, (i4 *)NULL, &local_err, 0);
SETDBERR(&dmve->dmve_error, 0, E_DM9652_UNDO_BTREE_DEL);
return(E_DB_ERROR);
}
}
}
else
{
/*
** If we are processing recovery of an Insert CLR (redo-ing the undo
** of an insert) then we don't log a CLR but instead save the LSN
** of the log record we are processing with which to update the
** page lsn's.
*/
DM0L_MAKE_LRI_FROM_LOG_RECORD(&lri, log_rec);
}
/*
** Write the LSN, etc, of the delete record onto the page, unless nologging
*/
if (dmve->dmve_logging)
DM1B_VPT_SET_PAGE_LRI_MACRO(page_type, page, &lri);
update_mode = DM1C_DIRECT;
if ((dmve->dmve_lk_type == LK_ROW || dmve->dmve_lk_type == LK_CROW) ||
(!index_update && log_rec->btd_pg_type != TCB_PG_V1 &&
dmve->dmve_lk_type == LK_PAGE && (log_rec->btd_header.flags & DM0L_PHYS_LOCK)))
update_mode |= DM1C_ROWLK;
/*
** Undo the delete operation.
*/
for (;;)
{
/*
** Allocate space if necessary
*/
if ( allocate == TRUE )
{
status = dm1cxallocate(page_type, log_rec->btd_page_size,
page, update_mode, ix_compressed,
&dmve->dmve_tran_id, (i4)0, childkey,
log_rec->btd_key_size +
DM1B_VPT_GET_BT_TIDSZ_MACRO(
page_type, page));
if (status != E_DB_OK)
{
dm1cxlog_error(E_DM93E0_BAD_INDEX_ALLOC, (DMP_RCB *)NULL, page,
page_type, log_rec->btd_page_size, childkey);
break;
}
}
/*
** Reinsert the key,tid,partition values.
*/
/* If leaf overflow look for entry with matching tid */
/* skip key comparison all the keys on overflow are the same */
if (DM1B_VPT_GET_PAGE_STAT_MACRO(page_type, page) & DMPP_CHAIN)
{
i4 i;
DM_TID tmptid;
i4 tmppart;
LG_LSN lsn;
for (i = 0; i < DM1B_VPT_GET_BT_KIDS_MACRO(page_type, page); i++)
{
dm1cxtget(page_type, log_rec->btd_page_size, page, i, &tmptid, &tmppart);
lsn = DMPP_VPT_GET_PAGE_LSN_MACRO(page_type, page);
if (log_rec->btd_tid.tid_i4 == tmptid.tid_i4 &&
dmpp_vpt_test_free_macro(page_type,
DM1B_VPT_BT_SEQUENCE_MACRO(page_type, page),
(i4)i + DM1B_OFFSEQ) == FALSE)
TRdisplay("dmvebtdl: dup entry on overflow %d for tid %d,%d CRPAGE %d page lsn %x\n",
DM1B_VPT_GET_PAGE_PAGE_MACRO(page_type, page),
log_rec->btd_tid.tid_tid.tid_page,
log_rec->btd_tid.tid_tid.tid_line,
DMPP_VPT_IS_CR_PAGE(page_type, page), lsn.lsn_low);
/*
does this trigger the dm1bxreserve failure from dm1bxovfl_alloc
return (E_DB_ERROR);
*/
}
}
status = dm1cxput(page_type, log_rec->btd_page_size, page,
ix_compressed, update_mode,
&dmve->dmve_tran_id,
LOG_ID_ID(dmve->dmve_log_id),
(i4)0, childkey,
key, log_rec->btd_key_size, &log_rec->btd_tid,
log_rec->btd_partno);
if (status != E_DB_OK)
{
dm1cxlog_error(E_DM93E4_BAD_INDEX_PUT, (DMP_RCB *)NULL, page,
page_type, log_rec->btd_page_size, childkey);
break;
}
/*
** If the insert is to a non-leaf index page, then the logged tid
** value must actually be insert to the position after the one
** to which we just put the key. Replace the old tidp from that
** position and insert the new one to the next entry.
*/
if (index_update && (childkey != childtid))
{
status = dm1cxtput(page_type, log_rec->btd_page_size,
page, childtid, &log_rec->btd_tid,
log_rec->btd_partno);
if (status != E_DB_OK)
{
dm1cxlog_error(E_DM93EB_BAD_INDEX_TPUT, (DMP_RCB *)NULL, page,
page_type, log_rec->btd_page_size, childtid);
break;
}
status = dm1cxtput(page_type, log_rec->btd_page_size,
page, childkey, &temptid, temppartno);
if (status != E_DB_OK)
{
dm1cxlog_error(E_DM93EB_BAD_INDEX_TPUT, (DMP_RCB *)NULL, page,
page_type, log_rec->btd_page_size, childkey);
break;
}
}
break;
}
DM1B_VPT_SET_PAGE_STAT_MACRO(page_type, page, DMPP_MODIFY);
dmveUnMutex(dmve, pinfo);
if (status != E_DB_OK)
{
SETDBERR(&dmve->dmve_error, 0, E_DM9652_UNDO_BTREE_DEL);
return(E_DB_ERROR);
}
return(E_DB_OK);
}
