129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
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/****************************************************************
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* *
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* Copyright 2003, 2010 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "error.h"
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#include "gdsroot.h"
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#include "gdsblk.h"
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#include "gdsbt.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsfhead.h"
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#include "filestruct.h"
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#include "jnl.h"
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#include "buddy_list.h"
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#include "hashtab_int4.h" /* needed for muprec.h */
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#include "hashtab_int8.h" /* needed for muprec.h */
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#include "hashtab_mname.h" /* needed for muprec.h */
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#include "muprec.h"
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#include "iosp.h"
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#include "jnl_typedef.h"
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#include "gtmmsg.h" /* for gtm_putmsg() prototype */
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#include "mur_validate_checksum.h" /* for "mur_validate_checksum" */
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GBLREF reg_ctl_list *mur_ctl;
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GBLREF mur_gbls_t murgbl;
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GBLREF mur_opt_struct mur_options;
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boolean_t mur_ztp_lookback(void)
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{
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multi_struct *multi;
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reg_ctl_list *rctl, *rctl_top;
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jnl_ctl_list *jctl;
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uint4 status;
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int4 rec_image_count = 0; /* This is a dummy variable for UNIX */
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jnl_record *jrec;
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pini_list_struct *plst;
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enum jnl_record_type rectype;
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token_num token;
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error_def(ERR_NOPREVLINK);
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error_def(ERR_MUINFOUINT4);
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error_def(ERR_MUINFOUINT8);
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error_def(ERR_MUINFOSTR);
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error_def(ERR_TEXT);
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assert(FENCE_NONE != mur_options.fences);
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for (rctl = mur_ctl, rctl_top = mur_ctl + murgbl.reg_total; rctl < rctl_top; rctl++)
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{
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jctl = rctl->jctl;
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assert(jctl->reg_ctl == rctl);
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assert(NULL != rctl->jctl_turn_around);
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assert(jctl == rctl->jctl_turn_around);
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assert(jctl->rec_offset == jctl->turn_around_offset);
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status = mur_prev(jctl, jctl->rec_offset);
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assert(SS_NORMAL == status);
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for ( ; SS_NORMAL == status; )
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{
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status = mur_prev_rec(&jctl); /* scan journal file in reverse order */
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if (SS_NORMAL != status)
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break;
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jrec = jctl->reg_ctl->mur_desc->jnlrec;
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rectype = (enum jnl_record_type)jrec->prefix.jrec_type;
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if (mur_options.verify && !mur_validate_checksum(jctl))
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{
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gtm_putmsg(VARLSTCNT(4) ERR_TEXT, 2, LEN_AND_LIT("Checksum validation failed"));
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return FALSE;
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}
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if (mur_options.lookback_time_specified && jrec->prefix.time <= mur_options.lookback_time)
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break;
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if (mur_options.lookback_opers_specified)
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{
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if (IS_FUPD_TUPD(rectype) || (!IS_FENCED(rectype) && IS_SET_KILL_ZKILL_ZTRIG(rectype)))
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{
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rctl->lookback_count++;
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if (rctl->lookback_count > mur_options.lookback_opers)
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break;
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}
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}
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if (IS_FUPD(rectype))
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{
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VMS_ONLY(
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MUR_GET_IMAGE_COUNT(jctl, jrec, rec_image_count, status);
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if (SS_NORMAL != status)
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break;
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)
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token = ((struct_jrec_upd *)jrec)->token_seq.token;
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if ((NULL != (multi = MUR_TOKEN_LOOKUP(token, rec_image_count, 0, ZTPFENCE)))
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&& (0 < multi->partner))
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{ /* this transaction has already been identified as broken */
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/* see turn-around-point code in mur_back_process/mur_apply_pblk for the fields to clear */
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rctl->jctl_turn_around->turn_around_offset = 0;
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rctl->jctl_turn_around->turn_around_time = 0;
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rctl->jctl_turn_around->turn_around_seqno = 0;
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rctl->jctl_turn_around->turn_around_tn = 0;
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/* Now save new turn around point.
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* Force the entire Z transaction beginning from ZTSTART (FUPD actually)
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* to be reported as broken and undo this transaction from the db */
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rctl->jctl_turn_around = jctl;
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jctl->turn_around_offset = jctl->rec_offset;
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if (multi->time > jrec->prefix.time)
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multi->time = jrec->prefix.time;
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if (mur_options.verbose)
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PRINT_VERBOSE_STAT(jctl, "mur_ztp_lookback");
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}
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}
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}
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if (ERR_NOPREVLINK == status)
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{
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if (mur_options.lookback_time_specified)
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{
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gtm_putmsg(VARLSTCNT(4) ERR_NOPREVLINK, 2, jctl->jnl_fn_len, jctl->jnl_fn);
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return FALSE;
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}
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gtm_putmsg(VARLSTCNT(4) MAKE_MSG_INFO(ERR_NOPREVLINK), 2, jctl->jnl_fn_len, jctl->jnl_fn);
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} else if (SS_NORMAL != status)
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return FALSE;
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}
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return TRUE;
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}
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