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Viewing changes to plugin/myisam/mi_check.cc

  • Committer: Olaf van der Spek
  • Date: 2011-08-19 09:09:12 UTC
  • mto: This revision was merged to the branch mainline in revision 2408.
  • Revision ID: olafvdspek@gmail.com-20110819090912-99xtr8q1zpo6p3gi
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plugin/myisam/mi_check.cc
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int chk_del(MI_CHECK *param, register MI_INFO *info, uint32_t test_flag)
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{
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  register ha_rows i;
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  uint32_t delete_link_length;
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  my_off_t empty, next_link, old_link= 0;
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  char buff[22],buff2[22];
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  param->record_checksum=0;
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  delete_link_length=((info->s->options & HA_OPTION_PACK_RECORD) ? 20 :
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                      info->s->rec_reflength+1);
 
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  delete_link_length=((info->s->options & HA_OPTION_PACK_RECORD) ? 20 : info->s->rec_reflength+1);
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  if (!(test_flag & T_SILENT))
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    puts("- check record delete-chain");
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    if (test_flag & T_VERBOSE)
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      printf("Recordlinks:    ");
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    empty=0;
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    for (i= info->state->del ; i > 0L && next_link != HA_OFFSET_ERROR ; i--)
 
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    ha_rows i= info->state->del;
 
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    for (; i > 0 && next_link != HA_OFFSET_ERROR; i--)
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    {
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      if (*killed_ptr(param))
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        return(1);
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      if (test_flag & T_VERBOSE)
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        printf(" %9s",llstr(next_link,buff));
 
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        printf(" %9s",llstr(next_link,buff));
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      if (next_link >= info->state->data_file_length)
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        goto wrong;
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      if (my_pread(info->dfile, (unsigned char*) buff,delete_link_length,
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                   next_link,MYF(MY_NABP)))
 
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        goto wrong;
 
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      if (my_pread(info->dfile, (unsigned char*) buff,delete_link_length, next_link,MYF(MY_NABP)))
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      {
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        if (test_flag & T_VERBOSE) puts("");
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        mi_check_print_error(param,"Can't read delete-link at filepos: %s",
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                    llstr(next_link,buff));
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        return(1);
 
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        if (test_flag & T_VERBOSE) puts("");
 
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        mi_check_print_error(param,"Can't read delete-link at filepos: %s",
 
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          llstr(next_link,buff));
 
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        return(1);
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      }
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      if (*buff != '\0')
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      {
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        if (test_flag & T_VERBOSE) puts("");
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        mi_check_print_error(param,"Record at pos: %s is not remove-marked",
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                    llstr(next_link,buff));
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        goto wrong;
 
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        if (test_flag & T_VERBOSE) puts("");
 
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        mi_check_print_error(param,"Record at pos: %s is not remove-marked",
 
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          llstr(next_link,buff));
 
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        goto wrong;
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      }
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      if (info->s->options & HA_OPTION_PACK_RECORD)
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      {
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        my_off_t prev_link=mi_sizekorr(buff+12);
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        if (empty && prev_link != old_link)
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        {
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          if (test_flag & T_VERBOSE) puts("");
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          mi_check_print_error(param,"Deleted block at %s doesn't point back at previous delete link",llstr(next_link,buff2));
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          goto wrong;
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        }
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        old_link=next_link;
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        next_link=mi_sizekorr(buff+4);
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        empty+=mi_uint3korr(buff+1);
 
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        my_off_t prev_link=mi_sizekorr(buff+12);
 
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        if (empty && prev_link != old_link)
 
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        {
 
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          if (test_flag & T_VERBOSE) puts("");
 
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          mi_check_print_error(param,"Deleted block at %s doesn't point back at previous delete link",llstr(next_link,buff2));
 
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          goto wrong;
 
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        }
 
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        old_link=next_link;
 
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        next_link=mi_sizekorr(buff+4);
 
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        empty+=mi_uint3korr(buff+1);
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      }
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      else
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      {
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        param->record_checksum+=(ha_checksum) next_link;
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        next_link=_mi_rec_pos(info->s,(unsigned char*) buff+1);
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        empty+=info->s->base.pack_reclength;
 
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        param->record_checksum+=(ha_checksum) next_link;
 
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        next_link=_mi_rec_pos(info->s,(unsigned char*) buff+1);
 
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        empty+=info->s->base.pack_reclength;
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      }
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    }
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    if (test_flag & T_VERBOSE)
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    if (empty != info->state->empty)
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    {
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      mi_check_print_warning(param,
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                             "Found %s deleted space in delete link chain. Should be %s",
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                             llstr(empty,buff2),
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                             llstr(info->state->empty,buff));
 
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        "Found %s deleted space in delete link chain. Should be %s",
 
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        llstr(empty,buff2),
 
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        llstr(info->state->empty,buff));
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    }
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    if (next_link != HA_OFFSET_ERROR)
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    {
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      mi_check_print_error(param,
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                           "Found more than the expected %s deleted rows in delete link chain",
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                           llstr(info->state->del, buff));
 
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        "Found more than the expected %s deleted rows in delete link chain",
 
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        llstr(info->state->del, buff));
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      goto wrong;
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    }
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    if (i != 0)
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    {
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      mi_check_print_error(param,
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                           "Found %s deleted rows in delete link chain. Should be %s",
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                           llstr(info->state->del - i, buff2),
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                           llstr(info->state->del, buff));
 
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      mi_check_print_error(param, "Found %s deleted rows in delete link chain. Should be %s", llstr(info->state->del - i, buff2), llstr(info->state->del, buff));
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      goto wrong;
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    }
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  }
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  return(0);
 
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  return 0;
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wrong:
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  param->testflag|=T_RETRY_WITHOUT_QUICK;
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  if (test_flag & T_VERBOSE) puts("");
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  mi_check_print_error(param,"record delete-link-chain corrupted");
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  return(1);
 
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  return 1;
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} /* chk_del */
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