mi_check.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:96k
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /* Descript, check and repair of ISAM tables */
- #include "fulltext.h"
- #include <m_ctype.h>
- #include <stdarg.h>
- #include <getopt.h>
- #include <assert.h>
- #ifdef HAVE_SYS_VADVICE_H
- #include <sys/vadvise.h>
- #endif
- #ifdef HAVE_SYS_MMAN_H
- #include <sys/mman.h>
- #endif
- #ifndef USE_RAID
- #define my_raid_create(A,B,C,D,E,F,G) my_create(A,B,C,G)
- #define my_raid_delete(A,B,C) my_delete(A,B)
- #endif
- /* Functions defined in this file */
- static int check_k_link(MI_CHECK *param, MI_INFO *info,uint nr);
- static int chk_index(MI_CHECK *param, MI_INFO *info, MI_KEYDEF *keyinfo,
- my_off_t page, uchar *buff, ha_rows *keys,
- ha_checksum *key_checksum, uint level);
- static uint isam_key_length(MI_INFO *info,MI_KEYDEF *keyinfo);
- static ha_checksum calc_checksum(ha_rows count);
- static int writekeys(MI_INFO *info,byte *buff,my_off_t filepos);
- static int sort_one_index(MI_CHECK *param, MI_INFO *info,MI_KEYDEF *keyinfo,
- my_off_t pagepos, File new_file);
- static int sort_key_read(SORT_INFO *sort_info,void *key);
- static int sort_get_next_record(SORT_INFO *sort_info);
- static int sort_key_cmp(SORT_INFO *sort_info, const void *a,const void *b);
- static int sort_key_write(SORT_INFO *sort_info, const void *a);
- static my_off_t get_record_for_key(MI_INFO *info,MI_KEYDEF *keyinfo,
- uchar *key);
- static int sort_insert_key(MI_CHECK *param, reg1 SORT_KEY_BLOCKS *key_block,
- uchar *key, my_off_t prev_block);
- static int sort_delete_record(MI_CHECK *param);
- static int flush_pending_blocks(MI_CHECK *param);
- static SORT_KEY_BLOCKS *alloc_key_blocks(MI_CHECK *param, uint blocks,
- uint buffer_length);
- static void update_key_parts(MI_KEYDEF *keyinfo,
- ulong *rec_per_key_part,
- ulonglong *unique,
- ulonglong records);
- static ha_checksum mi_byte_checksum(const byte *buf, uint length);
- #ifdef __WIN__
- static double ulonglong2double(ulonglong value)
- {
- longlong nr=(longlong) value;
- if (nr >= 0)
- return (double) nr;
- return (18446744073709551616.0 + (double) nr);
- }
- #if SIZEOF_OFF_T > 4
- #define my_off_t2double(A) ulonglong2double(A)
- #else
- #define my_off_t2double(A) ((double) (A))
- #endif /* SIZEOF_OFF_T > 4 */
- #endif
- void myisamchk_init(MI_CHECK *param)
- {
- bzero((gptr) param,sizeof(*param));
- param->opt_follow_links=1;
- param->keys_in_use= ~(ulonglong) 0;
- param->search_after_block=HA_OFFSET_ERROR;
- param->auto_increment_value= 0;
- param->use_buffers=USE_BUFFER_INIT;
- param->read_buffer_length=READ_BUFFER_INIT;
- param->write_buffer_length=READ_BUFFER_INIT;
- param->sort_buffer_length=SORT_BUFFER_INIT;
- param->sort_key_blocks=BUFFERS_WHEN_SORTING;
- param->tmpfile_createflag=O_RDWR | O_TRUNC | O_EXCL;
- param->myf_rw=MYF(MY_NABP | MY_WME | MY_WAIT_IF_FULL);
- param->sort_info.param=param;
- param->start_check_pos=0;
- }
- /* Check the status flags for the table */
- int chk_status(MI_CHECK *param, register MI_INFO *info)
- {
- MYISAM_SHARE *share=info->s;
- if (mi_is_crashed_on_repair(info))
- mi_check_print_warning(param,
- "Table is marked as crashed and last repair failed");
- else if (mi_is_crashed(info))
- mi_check_print_warning(param,
- "Table is marked as crashed");
- if (share->state.open_count != (uint) (info->s->global_changed ? 1 : 0))
- {
- mi_check_print_warning(param,
- "%d clients is using or hasn't closed the table properly",
- share->state.open_count);
- }
- return 0;
- }
- /* Check delete links */
- int chk_del(MI_CHECK *param, register MI_INFO *info, uint test_flag)
- {
- reg2 ha_rows i;
- uint j,delete_link_length;
- my_off_t empty,next_link,old_link;
- char buff[22],buff2[22];
- DBUG_ENTER("chk_del");
- if (!(test_flag & T_SILENT))
- puts("- check key delete-chain");
- LINT_INIT(old_link);
- param->record_checksum=0;
- param->key_file_blocks=info->s->base.keystart;
- for (j=0 ; j < info->s->state.header.max_block_size ; j++)
- if (check_k_link(param,info,j))
- goto wrong;
- delete_link_length=((info->s->options & HA_OPTION_PACK_RECORD) ? 20 :
- info->s->rec_reflength+1);
- if (!(test_flag & T_SILENT))
- puts("- check record delete-chain");
- next_link=info->s->state.dellink;
- if (info->state->del == 0)
- {
- if (test_flag & T_VERBOSE)
- {
- puts("No recordlinks");
- }
- }
- else
- {
- if (test_flag & T_VERBOSE)
- printf("Recordlinks: ");
- empty=0;
- for (i= info->state->del ; i > 0L && next_link != HA_OFFSET_ERROR ; i--)
- {
- if (test_flag & T_VERBOSE)
- printf(" %9s",llstr(next_link,buff));
- if (next_link >= info->state->data_file_length)
- goto wrong;
- if (my_pread(info->dfile,(char*) buff,delete_link_length,
- next_link,MYF(MY_NABP)))
- {
- if (test_flag & T_VERBOSE) puts("");
- mi_check_print_error(param,"Can't read delete-link at filepos: %s",
- llstr(next_link,buff));
- DBUG_RETURN(1);
- }
- if (*buff != ' ')
- {
- if (test_flag & T_VERBOSE) puts("");
- mi_check_print_error(param,"Record at pos: %s is not remove-marked",
- llstr(next_link,buff));
- goto wrong;
- }
- if (info->s->options & HA_OPTION_PACK_RECORD)
- {
- my_off_t prev_link=mi_sizekorr(buff+12);
- if (empty && prev_link != old_link)
- {
- if (test_flag & T_VERBOSE) puts("");
- mi_check_print_error(param,"Deleted block at %s doesn't point back at previous delete link",llstr(next_link,buff2));
- goto wrong;
- }
- old_link=next_link;
- next_link=mi_sizekorr(buff+4);
- empty+=mi_uint3korr(buff+1);
- }
- else
- {
- param->record_checksum+=(ha_checksum) next_link;
- next_link=_mi_rec_pos(info->s,(uchar*) buff+1);
- empty+=info->s->base.pack_reclength;
- }
- }
- if (empty != info->state->empty)
- {
- if (test_flag & T_VERBOSE) puts("");
- mi_check_print_warning(param,
- "Not used space is supposed to be: %s but is: %s",
- llstr(info->state->empty,buff),
- llstr(empty,buff2));
- info->state->empty=empty;
- }
- if (i != 0 || next_link != HA_OFFSET_ERROR)
- goto wrong;
- if (test_flag & T_VERBOSE) puts("n");
- }
- DBUG_RETURN(0);
- wrong:
- param->retry_without_quick=1; /* Don't use quick repair */
- if (test_flag & T_VERBOSE) puts("");
- mi_check_print_error(param,"record delete-link-chain corrupted");
- DBUG_RETURN(1);
- } /* chk_del */
- /* Check delete links in index file */
- static int check_k_link(MI_CHECK *param, register MI_INFO *info, uint nr)
- {
- my_off_t next_link;
- uint block_size=(nr+1)*MI_KEY_BLOCK_LENGTH;
- ha_rows records;
- char llbuff[21],*buff;
- DBUG_ENTER("check_k_link");
- if (param->testflag & T_VERBOSE)
- printf("block_size %4d:",block_size);
- next_link=info->s->state.key_del[nr];
- records= (ha_rows) (info->state->key_file_length / block_size);
- while (next_link != HA_OFFSET_ERROR && records > 0)
- {
- if (param->testflag & T_VERBOSE)
- printf("%16s",llstr(next_link,llbuff));
- if (next_link > info->state->key_file_length ||
- next_link & (info->s->blocksize-1))
- DBUG_RETURN(1);
- if (!(buff=key_cache_read(info->s->kfile, next_link, (byte*) info->buff,
- myisam_block_size, block_size, 1)))
- DBUG_RETURN(1);
- next_link=mi_sizekorr(buff);
- records--;
- param->key_file_blocks+=block_size;
- }
- if (param->testflag & T_VERBOSE)
- {
- if (next_link != HA_OFFSET_ERROR)
- printf("%16sn",llstr(next_link,llbuff));
- else
- puts("");
- }
- DBUG_RETURN (next_link != HA_OFFSET_ERROR);
- } /* check_k_link */
- /* Kontrollerar storleken p} filerna */
- int chk_size(MI_CHECK *param, register MI_INFO *info)
- {
- int error=0;
- register my_off_t skr,size;
- char buff[22],buff2[22];
- DBUG_ENTER("chk_size");
- if (!(param->testflag & T_SILENT)) puts("- check file-size");
- flush_key_blocks(info->s->kfile, FLUSH_FORCE_WRITE); /* If called externally */
- size=my_seek(info->s->kfile,0L,MY_SEEK_END,MYF(0));
- if ((skr=(my_off_t) info->state->key_file_length) != size)
- {
- if (skr > size)
- {
- error=1;
- mi_check_print_error(param,
- "Size of indexfile is: %-8s Should be: %s",
- llstr(size,buff), llstr(skr,buff2));
- }
- else
- mi_check_print_warning(param,
- "Size of indexfile is: %-8s Should be: %s",
- llstr(size,buff), llstr(skr,buff2));
- }
- if (!(param->testflag & T_VERY_SILENT) &&
- ! (info->s->options & HA_OPTION_COMPRESS_RECORD) &&
- ulonglong2double(info->state->key_file_length) >
- ulonglong2double(info->s->base.margin_key_file_length)*0.9)
- mi_check_print_warning(param,"Keyfile is almost full, %10s of %10s used",
- llstr(info->state->key_file_length,buff),
- llstr(info->s->base.max_key_file_length-1,buff));
- size=my_seek(info->dfile,0L,MY_SEEK_END,MYF(0));
- skr=(my_off_t) info->state->data_file_length;
- if (info->s->options & HA_OPTION_COMPRESS_RECORD)
- skr+= MEMMAP_EXTRA_MARGIN;
- #ifdef USE_RELOC
- if (info->data_file_type == STATIC_RECORD &&
- skr < (my_off_t) info->s->base.reloc*info->s->base.min_pack_length)
- skr=(my_off_t) info->s->base.reloc*info->s->base.min_pack_length;
- #endif
- if (skr != size)
- {
- info->state->data_file_length=size; /* Skipp other errors */
- if (skr > size && skr != size + MEMMAP_EXTRA_MARGIN)
- {
- error=1;
- mi_check_print_error(param,"Size of datafile is: %-9s Should be: %s",
- llstr(size,buff), llstr(skr,buff2));
- param->retry_without_quick=1; /* Don't use quick repair */
- }
- else
- {
- mi_check_print_warning(param,
- "Size of datafile is: %-9s Should be: %s",
- llstr(size,buff), llstr(skr,buff2));
- }
- }
- if (!(param->testflag & T_VERY_SILENT) &&
- !(info->s->options & HA_OPTION_COMPRESS_RECORD) &&
- ulonglong2double(info->state->data_file_length) >
- (ulonglong2double(info->s->base.max_data_file_length)*0.9))
- mi_check_print_warning(param, "Datafile is almost full, %10s of %10s used",
- llstr(info->state->data_file_length,buff),
- llstr(info->s->base.max_data_file_length-1,buff2));
- DBUG_RETURN(error);
- } /* chk_size */
- /* Check keys */
- int chk_key(MI_CHECK *param, register MI_INFO *info)
- {
- uint key,found_keys=0,full_text_keys=0,result=0;
- ha_rows keys;
- ha_checksum old_record_checksum,init_checksum;
- my_off_t all_keydata,all_totaldata,key_totlength,length;
- ulong *rec_per_key_part;
- MYISAM_SHARE *share=info->s;
- MI_KEYDEF *keyinfo;
- char buff[22],buff2[22];
- DBUG_ENTER("chk_key");
- if (!(param->testflag & T_SILENT)) puts("- check index reference");
- all_keydata=all_totaldata=key_totlength=0;
- old_record_checksum=0;
- init_checksum=param->record_checksum;
- if (!(share->options &
- (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)))
- old_record_checksum=calc_checksum(info->state->records+info->state->del-1)*
- share->base.pack_reclength;
- rec_per_key_part= param->rec_per_key_part;
- for (key= 0,keyinfo= &share->keyinfo[0]; key < share->base.keys ;
- rec_per_key_part+=keyinfo->keysegs, key++, keyinfo++)
- {
- param->key_crc[key]=0;
- if (!(((ulonglong) 1 << key) & share->state.key_map))
- {
- /* Remember old statistics for key */
- memcpy((char*) rec_per_key_part,
- (char*) share->state.rec_per_key_part+
- (uint) (rec_per_key_part - param->rec_per_key_part),
- keyinfo->keysegs*sizeof(*rec_per_key_part));
- continue;
- }
- found_keys++;
- param->record_checksum=init_checksum;
- bzero((char*) ¶m->unique_count,sizeof(param->unique_count));
- if ((!(param->testflag & T_SILENT)))
- printf ("- check data record references index: %dn",key+1);
- if (share->state.key_root[key] == HA_OFFSET_ERROR &&
- (info->state->records == 0 || keyinfo->flag & HA_FULLTEXT))
- continue;
- if (!_mi_fetch_keypage(info,keyinfo,share->state.key_root[key],info->buff,
- 0))
- {
- mi_check_print_error(param,"Can't read indexpage from filepos: %s",
- llstr(share->state.key_root[key],buff));
- if (!(param->testflag & T_INFO))
- DBUG_RETURN(-1);
- result= -1;
- continue;
- }
- param->key_file_blocks+=keyinfo->block_length;
- keys=0;
- param->keydata=param->totaldata=0;
- param->key_blocks=0;
- param->max_level=0;
- if (chk_index(param,info,keyinfo,share->state.key_root[key],info->buff,
- &keys, param->key_crc+key,1))
- DBUG_RETURN(-1);
- if(!(keyinfo->flag & HA_FULLTEXT))
- {
- if (keys != info->state->records)
- {
- mi_check_print_error(param,"Found %s keys of %s",llstr(keys,buff),
- llstr(info->state->records,buff2));
- if (!(param->testflag & T_INFO))
- DBUG_RETURN(-1);
- result= -1;
- continue;
- }
- if (found_keys - full_text_keys == 1 &&
- ((share->options &
- (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ||
- (param->testflag & T_DONT_CHECK_CHECKSUM)))
- old_record_checksum=param->record_checksum;
- else if (old_record_checksum != param->record_checksum)
- {
- if (key)
- mi_check_print_error(param,"Key %u doesn't point at same records that key 1",
- key+1);
- else
- mi_check_print_error(param,"Key 1 doesn't point at all records");
- if (!(param->testflag & T_INFO))
- DBUG_RETURN(-1);
- result= -1;
- continue;
- }
- }
- else
- full_text_keys++;
- /* Check that auto_increment key is bigger than max key value */
- if ((uint) share->base.auto_key -1 == key)
- {
- ulonglong save_auto_value=info->s->state.auto_increment;
- info->s->state.auto_increment=0;
- info->lastinx=key;
- _mi_read_key_record(info, 0L, info->rec_buff);
- update_auto_increment(info, info->rec_buff);
- if (info->s->state.auto_increment > save_auto_value)
- {
- mi_check_print_warning(param,
- "Auto-increment value: %s is smaller than max used value: %s",
- llstr(save_auto_value,buff2),
- llstr(info->s->state.auto_increment, buff));
- }
- if (param->testflag & T_AUTO_INC)
- {
- set_if_bigger(info->s->state.auto_increment,
- param->auto_increment_value);
- }
- else
- info->s->state.auto_increment=save_auto_value;
- }
- length=(my_off_t) isam_key_length(info,keyinfo)*keys + param->key_blocks*2;
- if (param->testflag & T_INFO && param->totaldata != 0L && keys != 0L)
- printf("Key: %2d: Keyblocks used: %3d%% Packed: %4d%% Max levels: %2dn",
- key+1,
- (int) (my_off_t2double(param->keydata)*100.0/my_off_t2double(param->totaldata)),
- (int) ((my_off_t2double(length) - my_off_t2double(param->keydata))*100.0/
- my_off_t2double(length)),
- param->max_level);
- all_keydata+=param->keydata; all_totaldata+=param->totaldata; key_totlength+=length;
- if (param->testflag & T_STATISTICS)
- update_key_parts(keyinfo, rec_per_key_part, param->unique_count,
- (ulonglong) info->state->records);
- }
- if (param->testflag & T_INFO)
- {
- if (all_totaldata != 0L && found_keys > 0)
- printf("Total: Keyblocks used: %3d%% Packed: %4d%%nn",
- (int) (my_off_t2double(all_keydata)*100.0/
- my_off_t2double(all_totaldata)),
- (int) ((my_off_t2double(key_totlength) -
- my_off_t2double(all_keydata))*100.0/
- my_off_t2double(key_totlength)));
- else if (all_totaldata != 0L && share->state.key_map)
- puts("");
- }
- if (param->key_file_blocks != info->state->key_file_length &&
- param->keys_in_use != ~(ulonglong) 0)
- mi_check_print_warning(param, "Some data are unreferenced in keyfile");
- if (found_keys != full_text_keys)
- param->record_checksum=old_record_checksum-init_checksum; /* Remove delete links */
- else
- param->record_checksum=0;
- DBUG_RETURN(0);
- } /* chk_key */
- /* Check if index is ok */
- static int chk_index(MI_CHECK *param, MI_INFO *info, MI_KEYDEF *keyinfo,
- my_off_t page, uchar *buff, ha_rows *keys,
- ha_checksum *key_checksum, uint level)
- {
- int flag;
- uint used_length,comp_flag,nod_flag,key_length,not_used;
- uchar key[MI_MAX_POSSIBLE_KEY_BUFF],*temp_buff,*keypos,*old_keypos,*endpos;
- my_off_t next_page,record;
- char llbuff[22],llbuff2[22];
- DBUG_ENTER("chk_index");
- DBUG_DUMP("buff",(byte*) buff,mi_getint(buff));
- if (!(temp_buff=(uchar*) my_alloca((uint) keyinfo->block_length)))
- {
- mi_check_print_error(param,"Not Enough memory");
- DBUG_RETURN(-1);
- }
- if (keyinfo->flag & HA_NOSAME)
- comp_flag=SEARCH_FIND | SEARCH_UPDATE; /* Not real duplicates */
- else
- comp_flag=SEARCH_SAME; /* Keys in positionorder */
- nod_flag=mi_test_if_nod(buff);
- used_length=mi_getint(buff);
- keypos=buff+2+nod_flag;
- endpos=buff+used_length;
- param->keydata+=used_length; param->totaldata+=keyinfo->block_length; /* INFO */
- param->key_blocks++;
- if (level > param->max_level)
- param->max_level=level;
- if (used_length > keyinfo->block_length)
- {
- mi_check_print_error(param,"Wrong pageinfo at page: %s",
- llstr(page,llbuff));
- goto err;
- }
- for ( ;; )
- {
- if (nod_flag)
- {
- next_page=_mi_kpos(nod_flag,keypos);
- if (next_page > info->state->key_file_length ||
- (nod_flag && (next_page & (info->s->blocksize -1))))
- {
- my_off_t max_length=my_seek(info->s->kfile,0L,MY_SEEK_END,MYF(0));
- mi_check_print_error(param,"Wrong pagepointer: %s at page: %s",
- llstr(next_page,llbuff),llstr(page,llbuff2));
- if (next_page+info->s->blocksize > max_length)
- goto err;
- info->state->key_file_length=(max_length &
- ~ (my_off_t) (info->s->blocksize-1));
- }
- if (!_mi_fetch_keypage(info,keyinfo,next_page,temp_buff,0))
- {
- mi_check_print_error(param,"Can't read key from filepos: %s",llstr(next_page,llbuff));
- goto err;
- }
- param->key_file_blocks+=keyinfo->block_length;
- if (chk_index(param,info,keyinfo,next_page,temp_buff,keys,key_checksum,
- level+1))
- goto err;
- }
- old_keypos=keypos;
- if (keypos >= endpos ||
- (key_length=(*keyinfo->get_key)(keyinfo,nod_flag,&keypos,key)) == 0)
- break;
- if (keypos > endpos)
- {
- mi_check_print_error(param,"Wrong key block length at page: %s",llstr(page,llbuff));
- goto err;
- }
- if ((*keys)++ &&
- (flag=_mi_key_cmp(keyinfo->seg,info->lastkey,key,key_length,
- comp_flag, ¬_used)) >=0)
- {
- DBUG_DUMP("old",(byte*) info->lastkey, info->lastkey_length);
- DBUG_DUMP("new",(byte*) key, key_length);
- DBUG_DUMP("new_in_page",(char*) old_keypos,(uint) (keypos-old_keypos));
- if (comp_flag & SEARCH_FIND && flag == 0)
- mi_check_print_error(param,"Found duplicated key at page %s",llstr(page,llbuff));
- else
- mi_check_print_error(param,"Key in wrong position at page %s",llstr(page,llbuff));
- goto err;
- }
- if (param->testflag & T_STATISTICS)
- {
- if (*keys != 1L) /* not first_key */
- {
- uint diff;
- _mi_key_cmp(keyinfo->seg,info->lastkey,key,USE_WHOLE_KEY,SEARCH_FIND,
- &diff);
- param->unique_count[diff-1]++;
- }
- }
- (*key_checksum)+= mi_byte_checksum((byte*) key,
- key_length- info->s->rec_reflength);
- memcpy((char*) info->lastkey,(char*) key,key_length);
- info->lastkey_length=key_length;
- record= _mi_dpos(info,0,key+key_length);
- if (record >= info->state->data_file_length)
- {
- #ifndef DBUG_OFF
- char llbuff3[22];
- #endif
- mi_check_print_error(param,"Found key at page %s that points to record outside datafile",llstr(page,llbuff));
- DBUG_PRINT("test",("page: %s record: %s filelength: %s",
- llstr(page,llbuff),llstr(record,llbuff2),
- llstr(info->state->data_file_length,llbuff3)));
- DBUG_DUMP("key",(byte*) info->lastkey,key_length);
- DBUG_DUMP("new_in_page",(char*) old_keypos,(uint) (keypos-old_keypos));
- goto err;
- }
- param->record_checksum+=(ha_checksum) record;
- }
- if (keypos != endpos)
- {
- mi_check_print_error(param,"Keyblock size at page %s is not correct. Block length: %d key length: %d",
- llstr(page,llbuff), used_length, (keypos - buff));
- goto err;
- }
- my_afree((byte*) temp_buff);
- DBUG_RETURN(0);
- err:
- my_afree((byte*) temp_buff);
- DBUG_RETURN(1);
- } /* chk_index */
- /* Calculate a checksum of 1+2+3+4...N = N*(N+1)/2 without overflow */
- static ha_checksum calc_checksum(ha_rows count)
- {
- ulonglong sum,a,b;
- DBUG_ENTER("calc_checksum");
- sum=0;
- a=count; b=count+1;
- if (a & 1)
- b>>=1;
- else
- a>>=1;
- while (b)
- {
- if (b & 1)
- sum+=a;
- a<<=1; b>>=1;
- }
- DBUG_PRINT("exit",("sum: %lx",(ulong) sum));
- DBUG_RETURN((ha_checksum) sum);
- } /* calc_checksum */
- /* Calc length of key in normal isam */
- static uint isam_key_length(MI_INFO *info, register MI_KEYDEF *keyinfo)
- {
- uint length;
- MI_KEYSEG *keyseg;
- DBUG_ENTER("isam_key_length");
- length= info->s->rec_reflength;
- for (keyseg=keyinfo->seg ; keyseg->type ; keyseg++)
- length+= keyseg->length;
- DBUG_PRINT("exit",("length: %d",length));
- DBUG_RETURN(length);
- } /* key_length */
- /* Check that record-link is ok */
- int chk_data_link(MI_CHECK *param, MI_INFO *info,int extend)
- {
- int error,got_error,flag;
- uint key,left_length,b_type,field;
- ha_rows records,del_blocks;
- my_off_t used,empty,pos,splits,start_recpos,
- del_length,link_used,start_block;
- byte *record,*to;
- char llbuff[22],llbuff2[22],llbuff3[22];
- ha_checksum intern_record_checksum;
- ha_checksum key_checksum[MI_MAX_POSSIBLE_KEY];
- my_bool static_row_size;
- MI_KEYDEF *keyinfo;
- MI_BLOCK_INFO block_info;
- DBUG_ENTER("chk_data_link");
- if (!(param->testflag & T_SILENT))
- {
- if (extend)
- puts("- check records and index references");
- else
- puts("- check record links");
- }
- if (!(record= (byte*) my_alloca(info->s->base.pack_reclength)))
- {
- mi_check_print_error(param,"Not Enough memory");
- DBUG_RETURN(-1);
- }
- records=del_blocks=0;
- used=link_used=splits=del_length=0;
- intern_record_checksum=param->glob_crc=0;
- LINT_INIT(left_length); LINT_INIT(start_recpos); LINT_INIT(to);
- got_error=error=0;
- empty=info->s->pack.header_length;
- /* Check how to calculate checksum of rows */
- static_row_size=1;
- if (info->s->data_file_type == COMPRESSED_RECORD)
- {
- for (field=0 ; field < info->s->base.fields ; field++)
- {
- if (info->s->rec[field].base_type == FIELD_BLOB ||
- info->s->rec[field].base_type == FIELD_VARCHAR)
- {
- static_row_size=0;
- break;
- }
- }
- }
- pos=my_b_tell(¶m->read_cache);
- bzero((char*) key_checksum, info->s->base.keys * sizeof(key_checksum[0]));
- while (pos < info->state->data_file_length)
- {
- switch (info->s->data_file_type) {
- case STATIC_RECORD:
- if (my_b_read(¶m->read_cache,(byte*) record,
- info->s->base.pack_reclength))
- goto err;
- start_recpos=pos;
- pos+=info->s->base.pack_reclength;
- splits++;
- if (*record == ' ')
- {
- del_blocks++;
- del_length+=info->s->base.pack_reclength;
- continue; /* Record removed */
- }
- param->glob_crc+= mi_static_checksum(info,record);
- used+=info->s->base.pack_reclength;
- break;
- case DYNAMIC_RECORD:
- flag=block_info.second_read=0;
- block_info.next_filepos=pos;
- do
- {
- if (_mi_read_cache(¶m->read_cache,(byte*) block_info.header,
- (start_block=block_info.next_filepos),
- sizeof(block_info.header),
- (flag ? 0 : READING_NEXT) | READING_HEADER))
- goto err;
- if (start_block & (MI_DYN_ALIGN_SIZE-1))
- {
- mi_check_print_error(param,"Wrong aligned block at %s",
- llstr(start_block,llbuff));
- goto err2;
- }
- b_type=_mi_get_block_info(&block_info,-1,start_block);
- if (b_type & (BLOCK_DELETED | BLOCK_ERROR | BLOCK_SYNC_ERROR |
- BLOCK_FATAL_ERROR))
- {
- if (b_type & BLOCK_SYNC_ERROR)
- {
- if (flag)
- {
- mi_check_print_error(param,"Unexpected byte: %d at link: %s",
- (int) block_info.header[0],
- llstr(start_block,llbuff));
- goto err2;
- }
- pos=block_info.filepos+block_info.block_len;
- goto next;
- }
- if (b_type & BLOCK_DELETED)
- {
- if (block_info.block_len < info->s->base.min_block_length)
- {
- mi_check_print_error(param,
- "Deleted block with impossible length %lu at %s",
- block_info.block_len,llstr(pos,llbuff));
- goto err2;
- }
- if ((block_info.next_filepos != HA_OFFSET_ERROR &&
- block_info.next_filepos >= info->state->data_file_length) ||
- (block_info.prev_filepos != HA_OFFSET_ERROR &&
- block_info.prev_filepos >= info->state->data_file_length))
- {
- mi_check_print_error(param,"Delete link points outside datafile at %s",
- llstr(pos,llbuff));
- goto err2;
- }
- del_blocks++;
- del_length+=block_info.block_len;
- pos=block_info.filepos+block_info.block_len;
- splits++;
- goto next;
- }
- mi_check_print_error(param,"Wrong bytesec: %d-%d-%d at linkstart: %s",
- block_info.header[0],block_info.header[1],
- block_info.header[2],
- llstr(start_block,llbuff));
- goto err2;
- }
- if (info->state->data_file_length < block_info.filepos+
- block_info.block_len)
- {
- mi_check_print_error(param,"Recordlink that points outside datafile at %s",
- llstr(pos,llbuff));
- got_error=1;
- break;
- }
- splits++;
- if (!flag++) /* First block */
- {
- start_recpos=pos;
- pos=block_info.filepos+block_info.block_len;
- if (block_info.rec_len > (uint) info->s->base.max_pack_length)
- {
- mi_check_print_error(param,"Found too long record (%d) at %s",
- block_info.rec_len,
- llstr(start_recpos,llbuff));
- got_error=1;
- break;
- }
- if (info->s->base.blobs)
- {
- if (!(to=mi_fix_rec_buff_for_blob(info,block_info.rec_len)))
- {
- mi_check_print_error(param,"Not enough memory for blob at %s",
- llstr(start_recpos,llbuff));
- got_error=1;
- break;
- }
- }
- else
- to= info->rec_buff;
- left_length=block_info.rec_len;
- }
- if (left_length < block_info.data_len)
- {
- mi_check_print_error(param,"Found too long record at %s",
- llstr(start_recpos,llbuff));
- got_error=1; break;
- }
- if (_mi_read_cache(¶m->read_cache,(byte*) to,block_info.filepos,
- (uint) block_info.data_len,
- flag == 1 ? READING_NEXT : 0))
- goto err;
- to+=block_info.data_len;
- link_used+= block_info.filepos-start_block;
- used+= block_info.filepos - start_block + block_info.data_len;
- empty+=block_info.block_len-block_info.data_len;
- left_length-=block_info.data_len;
- if (left_length)
- {
- if (b_type & BLOCK_LAST)
- {
- mi_check_print_error(param,"Record link to short for record at %s",
- llstr(start_recpos,llbuff));
- got_error=1;
- break;
- }
- if (info->state->data_file_length < block_info.next_filepos)
- {
- mi_check_print_error(param,"Found next-recordlink that points outside datafile at %s",
- llstr(block_info.filepos,llbuff));
- got_error=1;
- break;
- }
- }
- } while (left_length);
- if (! got_error)
- {
- if (_mi_rec_unpack(info,record,info->rec_buff,block_info.rec_len) ==
- MY_FILE_ERROR)
- {
- mi_check_print_error(param,"Found wrong record at %s", llstr(start_recpos,llbuff));
- got_error=1;
- }
- else
- {
- info->checksum=mi_checksum(info,record);
- if (param->testflag & (T_EXTEND | T_MEDIUM | T_VERBOSE))
- {
- if (_mi_rec_check(info,record))
- {
- mi_check_print_error(param,"Found wrong packed record at %s",
- llstr(start_recpos,llbuff));
- got_error=1;
- }
- }
- if (!got_error)
- param->glob_crc+= info->checksum;
- }
- }
- else if (!flag)
- pos=block_info.filepos+block_info.block_len;
- break;
- case COMPRESSED_RECORD:
- if (_mi_read_cache(¶m->read_cache,(byte*) block_info.header, pos,
- info->s->pack.ref_length, READING_NEXT))
- goto err;
- start_recpos=pos;
- splits++;
- VOID(_mi_pack_get_block_info(info,&block_info, -1, start_recpos, NullS));
- pos=block_info.filepos+block_info.rec_len;
- if (block_info.rec_len < (uint) info->s->min_pack_length ||
- block_info.rec_len > (uint) info->s->max_pack_length)
- {
- mi_check_print_error(param,"Found block with wrong recordlength: %d at %s",
- block_info.rec_len, llstr(start_recpos,llbuff));
- got_error=1;
- break;
- }
- if (_mi_read_cache(¶m->read_cache,(byte*) info->rec_buff,
- block_info.filepos, block_info.rec_len, READING_NEXT))
- goto err;
- if (_mi_pack_rec_unpack(info,record,info->rec_buff,block_info.rec_len))
- {
- mi_check_print_error(param,"Found wrong record at %s", llstr(start_recpos,llbuff));
- got_error=1;
- }
- if (static_row_size)
- param->glob_crc+= mi_static_checksum(info,record);
- else
- param->glob_crc+= mi_checksum(info,record);
- link_used+= (block_info.filepos - start_recpos);
- used+= (pos-start_recpos);
- } /* switch */
- if (! got_error)
- {
- intern_record_checksum+=(ha_checksum) start_recpos;
- records++;
- if (param->testflag & T_WRITE_LOOP && records % WRITE_COUNT == 0)
- {
- printf("%sr", llstr(records,llbuff)); VOID(fflush(stdout));
- }
- /* Check if keys match the record */
- for (key=0,keyinfo= info->s->keyinfo; key < info->s->base.keys;
- key++,keyinfo++)
- {
- if ((((ulonglong) 1 << key) & info->s->state.key_map))
- {
- if(!(keyinfo->flag & HA_FULLTEXT))
- {
- uint key_length=_mi_make_key(info,key,info->lastkey,record,
- start_recpos);
- if (extend)
- {
- /* We don't need to lock the key tree here as we don't allow
- concurrent threads when running myisamchk
- */
- if (_mi_search(info,keyinfo,info->lastkey,key_length,
- SEARCH_SAME, info->s->state.key_root[key]))
- {
- mi_check_print_error(param,"Record at: %10s Can't find key for index: %2d",
- llstr(start_recpos,llbuff),key+1);
- if (error++ > MAXERR || !(param->testflag & T_VERBOSE))
- goto err2;
- }
- }
- else
- key_checksum[key]+=mi_byte_checksum((byte*) info->lastkey,
- key_length);
- }
- }
- }
- }
- else
- {
- got_error=0;
- if (error++ > MAXERR || !(param->testflag & T_VERBOSE))
- goto err2;
- }
- next:; /* Next record */
- }
- if (param->testflag & T_WRITE_LOOP)
- {
- VOID(fputs(" r",stdout)); VOID(fflush(stdout));
- }
- if (records != info->state->records)
- {
- mi_check_print_error(param,"Record-count is not ok; is %-10s Should be: %s",
- llstr(records,llbuff), llstr(info->state->records,llbuff2));
- error=1;
- }
- else if (param->record_checksum &&
- param->record_checksum != intern_record_checksum)
- {
- mi_check_print_error(param,
- "Keypointers and record positions doesn't match");
- error=1;
- }
- else if (param->glob_crc != info->s->state.checksum &&
- (info->s->options &
- (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD)))
- {
- mi_check_print_warning(param,
- "Record checksum is not the same as checksum stored in the index filen");
- error=1;
- }
- else if (!extend)
- {
- for (key=0 ; key < info->s->base.keys; key++)
- {
- if (key_checksum[key] != param->key_crc[key] &&
- !(info->s->keyinfo[key].flag & HA_FULLTEXT))
- {
- mi_check_print_error(param,"Checksum for key: %2d doesn't match checksum for records",
- key+1);
- error=1;
- }
- }
- }
- if (used+empty+del_length != info->state->data_file_length)
- {
- mi_check_print_warning(param,
- "Found %s record-data and %s unused data and %s deleted-data",
- llstr(used,llbuff),llstr(empty,llbuff2),
- llstr(del_length,llbuff3));
- mi_check_print_warning(param,
- "Total %s, Should be: %s",
- llstr((used+empty+del_length),llbuff),
- llstr(info->state->data_file_length,llbuff2));
- }
- if (del_blocks != info->state->del)
- {
- mi_check_print_warning(param,
- "Found %10s deleted blocks Should be: %s",
- llstr(del_blocks,llbuff),
- llstr(info->state->del,llbuff2));
- }
- if (splits != info->s->state.split)
- {
- mi_check_print_warning(param,
- "Found %10s parts Should be: %s parts",
- llstr(splits,llbuff),
- llstr(info->s->state.split,llbuff2));
- }
- if (param->testflag & T_INFO)
- {
- if (param->warning_printed || param->error_printed)
- puts("");
- if (used != 0 && ! param->error_printed)
- {
- printf("Records:%18s M.recordlength:%9lu Packed:%14.0f%%n",
- llstr(records,llbuff), (long)((used-link_used)/records),
- (info->s->base.blobs ? 0.0 :
- (ulonglong2double((ulonglong) info->s->base.reclength*records)-
- my_off_t2double(used))/
- ulonglong2double((ulonglong) info->s->base.reclength*records)*100.0));
- printf("Recordspace used:%9.0f%% Empty space:%12d%% Blocks/Record: %6.2fn",
- (ulonglong2double(used-link_used)/ulonglong2double(used-link_used+empty)*100.0),
- (!records ? 100 : (int) (ulonglong2double(del_length+empty)/
- my_off_t2double(used)*100.0)),
- ulonglong2double(splits - del_blocks) / records);
- }
- printf("Record blocks:%12s Delete blocks:%10sn",
- llstr(splits-del_blocks,llbuff),llstr(del_blocks,llbuff2));
- printf("Record data: %12s Deleted data: %10sn",
- llstr(used-link_used,llbuff),llstr(del_length,llbuff2));
- printf("Lost space: %12s Linkdata: %10sn",
- llstr(empty,llbuff),llstr(link_used,llbuff2));
- }
- my_afree((gptr) record);
- DBUG_RETURN (error);
- err:
- mi_check_print_error(param,"got error: %d when reading datafile",my_errno);
- err2:
- my_afree((gptr) record);
- param->retry_without_quick=1;
- DBUG_RETURN(1);
- } /* chk_data_link */
- /* Recover old table by reading each record and writing all keys */
- /* Save new datafile-name in temp_filename */
- int mi_repair(MI_CHECK *param, register MI_INFO *info,
- my_string name, int rep_quick)
- {
- int error,got_error;
- uint i;
- ha_rows start_records,new_header_length;
- my_off_t del;
- File new_file;
- MYISAM_SHARE *share=info->s;
- char llbuff[22],llbuff2[22];
- SORT_INFO *sort_info= ¶m->sort_info;
- DBUG_ENTER("mi_repair");
- start_records=info->state->records;
- new_header_length=(param->testflag & T_UNPACK) ? 0L :
- share->pack.header_length;
- got_error=1;
- new_file= -1;
- if (!(param->testflag & T_SILENT))
- {
- printf("- recovering (with keycache) MyISAM-table '%s'n",name);
- printf("Data records: %sn", llstr(info->state->records,llbuff));
- }
- if (!param->using_global_keycache)
- VOID(init_key_cache(param->use_buffers,NEAD_MEM));
- if (init_io_cache(¶m->read_cache,info->dfile,
- (uint) param->read_buffer_length,
- READ_CACHE,share->pack.header_length,1,MYF(MY_WME)))
- goto err;
- if (!rep_quick)
- if (init_io_cache(&info->rec_cache,-1,(uint) param->write_buffer_length,
- WRITE_CACHE, new_header_length, 1,
- MYF(MY_WME | MY_WAIT_IF_FULL)))
- goto err;
- info->opt_flag|=WRITE_CACHE_USED;
- sort_info->start_recpos=0;
- sort_info->buff=0; sort_info->buff_length=0;
- if (!(sort_info->record=(byte*) my_malloc((uint) share->base.pack_reclength,
- MYF(0))))
- {
- mi_check_print_error(param,"Not enough memory for extra record");
- goto err;
- }
- if (!rep_quick)
- {
- if ((new_file=my_raid_create(fn_format(param->temp_filename,name,"",
- DATA_TMP_EXT,
- 2+4),
- 0,param->tmpfile_createflag,
- share->base.raid_type,
- share->base.raid_chunks,
- share->base.raid_chunksize,
- MYF(0))) < 0)
- {
- mi_check_print_error(param,"Can't create new tempfile: '%s'",
- param->temp_filename);
- goto err;
- }
- if (filecopy(param,new_file,info->dfile,0L,new_header_length,
- "datafile-header"))
- goto err;
- info->s->state.dellink= HA_OFFSET_ERROR;
- info->rec_cache.file=new_file;
- if (param->testflag & T_UNPACK)
- {
- share->options&= ~HA_OPTION_COMPRESS_RECORD;
- mi_int2store(share->state.header.options,share->options);
- }
- }
- sort_info->info=info;
- sort_info->pos=sort_info->max_pos=share->pack.header_length;
- sort_info->filepos=new_header_length;
- param->read_cache.end_of_file=sort_info->filelength=
- my_seek(info->dfile,0L,MY_SEEK_END,MYF(0));
- sort_info->dupp=0;
- sort_info->fix_datafile= (my_bool) (! rep_quick);
- sort_info->max_records= ~(ha_rows) 0;
- if ((sort_info->new_data_file_type=share->data_file_type) ==
- COMPRESSED_RECORD && param->testflag & T_UNPACK)
- {
- if (share->options & HA_OPTION_PACK_RECORD)
- sort_info->new_data_file_type = DYNAMIC_RECORD;
- else
- sort_info->new_data_file_type = STATIC_RECORD;
- }
- del=info->state->del;
- info->state->records=info->state->del=share->state.split=0;
- info->state->empty=0;
- if (sort_info->new_data_file_type != COMPRESSED_RECORD && !rep_quick)
- share->state.checksum=0;
- info->update= (short) (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
- for (i=0 ; i < info->s->base.keys ; i++)
- share->state.key_root[i]= HA_OFFSET_ERROR;
- for (i=0 ; i < share->state.header.max_block_size ; i++)
- share->state.key_del[i]= HA_OFFSET_ERROR;
- /* I think mi_repair and mi_repair_by_sort should do the same
- (according, e.g. to ha_myisam::repair), but as mi_repair doesn't
- touch key_map it cannot be used to T_CREATE_MISSING_KEYS.
- That is the next line for... (serg)
- */
- share->state.key_map= ((((ulonglong) 1L << share->base.keys)-1) &
- param->keys_in_use);
- info->state->key_file_length=share->base.keystart;
- lock_memory(param); /* Everything is alloced */
- while (!(error=sort_get_next_record(sort_info)))
- {
- if (writekeys(info,(byte*) sort_info->record,sort_info->filepos))
- {
- if (my_errno != HA_ERR_FOUND_DUPP_KEY) goto err;
- DBUG_DUMP("record",(byte*) sort_info->record,share->base.pack_reclength);
- mi_check_print_info(param,"Duplicate key %2d for record at %10s against new record at %10s",
- info->errkey+1,
- llstr(sort_info->start_recpos,llbuff),
- llstr(info->dupp_key_pos,llbuff2));
- if (param->testflag & T_VERBOSE)
- {
- VOID(_mi_make_key(info,(uint) info->errkey,info->lastkey,
- sort_info->record,0L));
- _mi_print_key(stdout,share->keyinfo[info->errkey].seg,info->lastkey,
- USE_WHOLE_KEY);
- }
- sort_info->dupp++;
- if (rep_quick == 1)
- {
- param->error_printed=param->retry_without_quick=1;
- goto err;
- }
- continue;
- }
- if (sort_write_record(sort_info))
- goto err;
- }
- if (error > 0 || write_data_suffix(param,info) ||
- flush_io_cache(&info->rec_cache) || param->read_cache.error < 0)
- goto err;
- if (param->testflag & T_WRITE_LOOP)
- {
- VOID(fputs(" r",stdout)); VOID(fflush(stdout));
- }
- if (my_chsize(share->kfile,info->state->key_file_length,MYF(0)))
- {
- mi_check_print_warning(param,
- "Can't change size of indexfile, error: %d",
- my_errno);
- goto err;
- }
- if (rep_quick && del+sort_info->dupp != info->state->del)
- {
- mi_check_print_error(param,"Couldn't fix table with quick recovery: Found wrong number of deleted records");
- mi_check_print_error(param,"Run recovery again without -q");
- got_error=1;
- param->retry_repair=param->retry_without_quick=1;
- goto err;
- }
- if (param->testflag & T_SAFE_REPAIR)
- {
- /* Don't repair if we loosed more than one row */
- if (info->state->records+1 < start_records)
- {
- info->state->records=start_records;
- got_error=1;
- goto err;
- }
- }
- if (!rep_quick)
- {
- my_close(info->dfile,MYF(0));
- info->dfile=new_file;
- info->state->data_file_length=sort_info->filepos;
- /* Only whole records */
- share->state.split=info->state->records+info->state->del;
- share->state.version=(ulong) time((time_t*) 0); /* Force reopen */
- }
- else
- info->state->data_file_length=sort_info->max_pos;
- if (!(param->testflag & T_SILENT))
- {
- if (start_records != info->state->records)
- printf("Data records: %sn", llstr(info->state->records,llbuff));
- if (sort_info->dupp)
- mi_check_print_warning(param,
- "%s records have been removed",
- llstr(sort_info->dupp,llbuff));
- }
- got_error=0;
- /* If invoked by external program that uses thr_lock */
- if (&share->state.state != info->state)
- memcpy( &share->state.state, info->state, sizeof(*info->state));
- err:
- if (!got_error)
- {
- /* Replace the actual file with the temporary file */
- if (new_file >= 0)
- {
- my_close(new_file,MYF(0));
- info->dfile=new_file= -1;
- if (change_to_newfile(share->filename,MI_NAME_DEXT,
- DATA_TMP_EXT, share->base.raid_chunks,
- (param->testflag & T_BACKUP_DATA ?
- MYF(MY_REDEL_MAKE_BACKUP): MYF(0))) ||
- mi_open_datafile(info,share))
- got_error=1;
- }
- }
- if (got_error)
- {
- if (! param->error_printed)
- mi_check_print_error(param,"%d for record at pos %s",my_errno,
- llstr(sort_info->start_recpos,llbuff));
- if (new_file >= 0)
- {
- VOID(my_close(new_file,MYF(0)));
- VOID(my_raid_delete(param->temp_filename,info->s->base.raid_chunks,
- MYF(MY_WME)));
- }
- mi_mark_crashed_on_repair(info);
- }
- if (sort_info->record)
- my_free(sort_info->record,MYF(0));
- my_free(sort_info->buff,MYF(MY_ALLOW_ZERO_PTR));
- VOID(end_io_cache(¶m->read_cache));
- info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
- VOID(end_io_cache(&info->rec_cache));
- got_error|=flush_blocks(param,share->kfile);
- if (!got_error && param->testflag & T_UNPACK)
- {
- share->state.header.options[0]&= (uchar) ~HA_OPTION_COMPRESS_RECORD;
- share->pack.header_length=0;
- share->data_file_type=sort_info->new_data_file_type;
- }
- share->state.changed|= (STATE_NOT_OPTIMIZED_KEYS | STATE_NOT_SORTED_PAGES |
- STATE_NOT_ANALYZED);
- DBUG_RETURN(got_error);
- }
- /* Uppate keyfile when doing repair */
- static int writekeys(register MI_INFO *info,byte *buff,my_off_t filepos)
- {
- register uint i;
- uchar *key;
- DBUG_ENTER("writekeys");
- key=info->lastkey+info->s->base.max_key_length;
- for (i=0 ; i < info->s->base.keys ; i++)
- {
- if (((ulonglong) 1 << i) & info->s->state.key_map)
- {
- if (info->s->keyinfo[i].flag & HA_FULLTEXT )
- {
- if (_mi_ft_add(info,i,(char*) key,buff,filepos)) goto err;
- }
- else
- {
- uint key_length=_mi_make_key(info,i,key,buff,filepos);
- if (_mi_ck_write(info,i,key,key_length)) goto err;
- }
- }
- }
- DBUG_RETURN(0);
- err:
- if (my_errno == HA_ERR_FOUND_DUPP_KEY)
- {
- info->errkey=(int) i; /* This key was found */
- while ( i-- > 0 )
- {
- if (((ulonglong) 1 << i) & info->s->state.key_map)
- {
- if (info->s->keyinfo[i].flag & HA_FULLTEXT)
- {
- if (_mi_ft_del(info,i,(char*) key,buff,filepos)) break;
- }
- else
- {
- uint key_length=_mi_make_key(info,i,key,buff,filepos);
- if (_mi_ck_delete(info,i,key,key_length)) break;
- }
- }
- }
- }
- DBUG_PRINT("error",("errno: %d",my_errno));
- DBUG_RETURN(-1);
- } /* writekeys */
- /* Change all key-pointers that points to a records */
- int movepoint(register MI_INFO *info, byte *record, my_off_t oldpos,
- my_off_t newpos, uint prot_key)
- {
- register uint i;
- uchar *key;
- uint key_length;
- DBUG_ENTER("movepoint");
- key=info->lastkey+info->s->base.max_key_length;
- for (i=0 ; i < info->s->base.keys; i++)
- {
- if (i != prot_key && (((ulonglong) 1 << i) & info->s->state.key_map))
- {
- key_length=_mi_make_key(info,i,key,record,oldpos);
- if (info->s->keyinfo[i].flag & HA_NOSAME)
- { /* Change pointer direct */
- uint nod_flag;
- MI_KEYDEF *keyinfo;
- keyinfo=info->s->keyinfo+i;
- if (_mi_search(info,keyinfo,key,USE_WHOLE_KEY,
- (uint) (SEARCH_SAME | SEARCH_SAVE_BUFF),
- info->s->state.key_root[i]))
- DBUG_RETURN(-1);
- nod_flag=mi_test_if_nod(info->buff);
- _mi_dpointer(info,info->int_keypos-nod_flag-
- info->s->rec_reflength,newpos);
- if (_mi_write_keypage(info,keyinfo,info->last_keypage,info->buff))
- DBUG_RETURN(-1);
- }
- else
- { /* Change old key to new */
- if (_mi_ck_delete(info,i,key,key_length))
- DBUG_RETURN(-1);
- key_length=_mi_make_key(info,i,key,record,newpos);
- if (_mi_ck_write(info,i,key,key_length))
- DBUG_RETURN(-1);
- }
- }
- }
- DBUG_RETURN(0);
- } /* movepoint */
- /* Tell system that we want all memory for our cache */
- void lock_memory(MI_CHECK *param __attribute__((unused)))
- {
- #ifdef SUN_OS /* Key-cacheing thrases on sun 4.1 */
- if (param->opt_lock_memory)
- {
- int success = mlockall(MCL_CURRENT); /* or plock(DATLOCK); */
- if (geteuid() == 0 && success != 0)
- mi_check_print_warning(param,
- "Failed to lock memory. errno %d",my_errno);
- }
- #endif
- } /* lock_memory */
- /* Flush all changed blocks to disk */
- int flush_blocks(MI_CHECK *param, File file)
- {
- if (flush_key_blocks(file,FLUSH_RELEASE))
- {
- mi_check_print_error(param,"%d when trying to write bufferts",my_errno);
- return(1);
- }
- if (!param->using_global_keycache)
- end_key_cache();
- return 0;
- } /* flush_blocks */
- /* Sort index for more efficent reads */
- int mi_sort_index(MI_CHECK *param, register MI_INFO *info, my_string name)
- {
- reg2 uint key;
- reg1 MI_KEYDEF *keyinfo;
- File new_file;
- my_off_t index_pos[MI_MAX_POSSIBLE_KEY];
- uint r_locks,w_locks;
- MYISAM_SHARE *share=info->s;
- MI_STATE_INFO old_state;
- DBUG_ENTER("sort_index");
- if (!(param->testflag & T_SILENT))
- printf("- Sorting index for MyISAM-table '%s'n",name);
- if ((new_file=my_create(fn_format(param->temp_filename,name,"",
- INDEX_TMP_EXT,2+4),
- 0,param->tmpfile_createflag,MYF(0))) <= 0)
- {
- mi_check_print_error(param,"Can't create new tempfile: '%s'",
- param->temp_filename);
- DBUG_RETURN(-1);
- }
- if (filecopy(param, new_file,share->kfile,0L,
- (ulong) share->base.keystart, "headerblock"))
- goto err;
- param->new_file_pos=share->base.keystart;
- for (key= 0,keyinfo= &share->keyinfo[0]; key < share->base.keys ;
- key++,keyinfo++)
- {
- if (!(((ulonglong) 1 << key) & share->state.key_map))
- continue;
- if (share->state.key_root[key] != HA_OFFSET_ERROR)
- {
- index_pos[key]=param->new_file_pos; /* Write first block here */
- if (sort_one_index(param,info,keyinfo,share->state.key_root[key],
- new_file))
- goto err;
- }
- else
- index_pos[key]= HA_OFFSET_ERROR; /* No blocks */
- }
- /* Flush key cache for this file if we are calling this outside myisamchk */
- flush_key_blocks(share->kfile, FLUSH_IGNORE_CHANGED);
- share->state.version=(ulong) time((time_t*) 0);
- old_state=share->state; /* save state if not stored */
- r_locks=share->r_locks; w_locks=share->w_locks;
- /* Put same locks as old file */
- share->r_locks=share->w_locks=0;
- (void) _mi_writeinfo(info,WRITEINFO_UPDATE_KEYFILE);
- VOID(my_close(share->kfile,MYF(MY_WME)));
- share->kfile = -1;
- VOID(my_close(new_file,MYF(MY_WME)));
- if (change_to_newfile(share->filename,MI_NAME_IEXT,INDEX_TMP_EXT,0,
- MYF(0)) ||
- mi_open_keyfile(share))
- goto err2;
- info->lock_type=F_UNLCK; /* Force mi_readinfo to lock */
- _mi_readinfo(info,F_WRLCK,0); /* Will lock the table */
- info->lock_type=F_WRLCK;
- share->r_locks=r_locks; share->w_locks=w_locks;
- share->state=old_state; /* Restore old state */
- info->state->key_file_length=param->new_file_pos;
- info->update= (short) (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
- for (key=0 ; key < info->s->base.keys ; key++)
- info->s->state.key_root[key]=index_pos[key];
- for (key=0 ; key < info->s->state.header.max_block_size ; key++)
- info->s->state.key_del[key]= HA_OFFSET_ERROR;
- info->s->state.changed&= ~STATE_NOT_SORTED_PAGES;
- DBUG_RETURN(0);
- err:
- VOID(my_close(new_file,MYF(MY_WME)));
- err2:
- VOID(my_delete(param->temp_filename,MYF(MY_WME)));
- DBUG_RETURN(-1);
- } /* sort_index */
- /* Sort records recursive using one index */
- static int sort_one_index(MI_CHECK *param, MI_INFO *info, MI_KEYDEF *keyinfo,
- my_off_t pagepos, File new_file)
- {
- uint length,nod_flag,used_length;
- uchar *buff,*keypos,*endpos;
- uchar key[MI_MAX_POSSIBLE_KEY_BUFF];
- my_off_t new_page_pos,next_page;
- char llbuff[22];
- DBUG_ENTER("sort_one_index");
- new_page_pos=param->new_file_pos;
- param->new_file_pos+=keyinfo->block_length;
- if (!(buff=(uchar*) my_alloca((uint) keyinfo->block_length)))
- {
- mi_check_print_error(param,"Not Enough memory");
- DBUG_RETURN(-1);
- }
- if (!_mi_fetch_keypage(info,keyinfo,pagepos,buff,0))
- {
- mi_check_print_error(param,"Can't read key block from filepos: %s",
- llstr(pagepos,llbuff));
- goto err;
- }
- if ((nod_flag=mi_test_if_nod(buff)))
- {
- used_length=mi_getint(buff);
- keypos=buff+2+nod_flag;
- endpos=buff+used_length;
- for ( ;; )
- {
- if (nod_flag)
- {
- next_page=_mi_kpos(nod_flag,keypos);
- _mi_kpointer(info,keypos-nod_flag,param->new_file_pos); /* Save new pos */
- if (sort_one_index(param,info,keyinfo,next_page, new_file))
- {
- DBUG_PRINT("error",("From page: %ld, keyoffset: %d used_length: %d",
- (ulong) pagepos, (int) (keypos - buff),
- (int) used_length));
- DBUG_DUMP("buff",(byte*) buff,used_length);
- goto err;
- }
- }
- if (keypos >= endpos ||
- ((*keyinfo->get_key)(keyinfo,nod_flag,&keypos,key)) == 0)
- break;
- #ifdef EXTRA_DEBUG
- assert(keypos <= endpos);
- #endif
- }
- }
- /* Fill block with zero and write it to the new index file */
- length=mi_getint(buff);
- bzero((byte*) buff+length,keyinfo->block_length-length);
- if (my_pwrite(new_file,(byte*) buff,(uint) keyinfo->block_length,
- new_page_pos,MYF(MY_NABP | MY_WAIT_IF_FULL)))
- {
- mi_check_print_error(param,"Can't write indexblock, error: %d",my_errno);
- goto err;
- }
- my_afree((gptr) buff);
- DBUG_RETURN(0);
- err:
- my_afree((gptr) buff);
- DBUG_RETURN(1);
- } /* sort_one_index */
- /* Change to use new file */
- /* Copy stats from old file to new file, deletes orginal and */
- /* changes new file name to old file name */
- int change_to_newfile(const char * filename, const char * old_ext,
- const char * new_ext,
- uint raid_chunks __attribute__((unused)),
- myf MyFlags)
- {
- char old_filename[FN_REFLEN],new_filename[FN_REFLEN];
- #ifdef USE_RAID
- if (raid_chunks)
- return my_raid_redel(fn_format(old_filename,filename,"",old_ext,2+4),
- fn_format(new_filename,filename,"",new_ext,2+4),
- raid_chunks,
- MYF(MY_WME | MY_LINK_WARNING | MyFlags));
- #endif
- return my_redel(fn_format(old_filename,filename,"",old_ext,2+4),
- fn_format(new_filename,filename,"",new_ext,2+4),
- MYF(MY_WME | MY_LINK_WARNING | MyFlags));
- } /* change_to_newfile */
- /* Locks a whole file */
- /* Gives an error-message if file can't be locked */
- int lock_file(MI_CHECK *param, File file, my_off_t start, int lock_type,
- const char *filetype, const char *filename)
- {
- if (my_lock(file,lock_type,start,F_TO_EOF,
- param->testflag & T_WAIT_FOREVER ? MYF(MY_SEEK_NOT_DONE) :
- MYF(MY_SEEK_NOT_DONE | MY_DONT_WAIT)))
- {
- mi_check_print_error(param," %d when locking %s '%s'",my_errno,filetype,filename);
- param->error_printed=2; /* Don't give that data is crashed */
- return 1;
- }
- return 0;
- } /* lock_file */
- /* Copy a block between two files */
- int filecopy(MI_CHECK *param, File to,File from,my_off_t start,
- my_off_t length, const char *type)
- {
- char tmp_buff[IO_SIZE],*buff;
- ulong buff_length;
- DBUG_ENTER("filecopy");
- buff_length=(ulong) min(param->write_buffer_length,length);
- if (!(buff=my_malloc(buff_length,MYF(0))))
- {
- buff=tmp_buff; buff_length=IO_SIZE;
- }
- VOID(my_seek(from,start,MY_SEEK_SET,MYF(0)));
- while (length > buff_length)
- {
- if (my_read(from,(byte*) buff,buff_length,MYF(MY_NABP)) ||
- my_write(to,(byte*) buff,buff_length,param->myf_rw))
- goto err;
- length-= buff_length;
- }
- if (my_read(from,(byte*) buff,(uint) length,MYF(MY_NABP)) ||
- my_write(to,(byte*) buff,(uint) length,param->myf_rw))
- goto err;
- if (buff != tmp_buff)
- my_free(buff,MYF(0));
- DBUG_RETURN(0);
- err:
- if (buff != tmp_buff)
- my_free(buff,MYF(0));
- mi_check_print_error(param,"Can't copy %s to tempfile, error %d",
- type,my_errno);
- DBUG_RETURN(1);
- }
- /* Fix table or given index using sorting */
- /* saves new table in temp_filename */
- int mi_repair_by_sort(MI_CHECK *param, register MI_INFO *info,
- const char * name, int rep_quick)
- {
- int got_error;
- uint i;
- ulong length;
- ha_rows start_records;
- my_off_t new_header_length,del;
- File new_file;
- MI_SORT_PARAM sort_param;
- MYISAM_SHARE *share=info->s;
- ulong *rec_per_key_part;
- char llbuff[22];
- SORT_INFO *sort_info= ¶m->sort_info;
- ulonglong key_map=share->state.key_map;
- DBUG_ENTER("mi_repair_by_sort");
- start_records=info->state->records;
- got_error=1;
- new_file= -1;
- new_header_length=(param->testflag & T_UNPACK) ? 0 :
- share->pack.header_length;
- if (!(param->testflag & T_SILENT))
- {
- printf("- recovering (with sort) MyISAM-table '%s'n",name);
- printf("Data records: %sn", llstr(start_records,llbuff));
- }
- /* Hmm, repair_by_sort uses find_all_keys, and find_all_keys strictly
- implies "one row - one key per keynr", while for ft_key one row/keynr
- can produce as many keys as the number of unique words in the text
- that's why I disabled repair_by_sort for ft-keys. (serg)
- */
- for (i=0 ; i < share->base.keys ; i++)
- {
- if ((((ulonglong) 1 << i) & key_map) &&
- (share->keyinfo[i].flag & HA_FULLTEXT))
- {
- mi_check_print_error(param,
- "Can`t use repair_by_sort with FULLTEXT key");
- DBUG_RETURN(1);
- }
- }
- bzero((char*) sort_info,sizeof(*sort_info));
- if (!(sort_info->key_block=
- alloc_key_blocks(param,
- (uint) param->sort_key_blocks,
- share->base.max_key_block_length))
- || init_io_cache(¶m->read_cache,info->dfile,
- (uint) param->read_buffer_length,
- READ_CACHE,share->pack.header_length,1,MYF(MY_WME)) ||
- (! rep_quick &&
- init_io_cache(&info->rec_cache,info->dfile,
- (uint) param->write_buffer_length,
- WRITE_CACHE,new_header_length,1,
- MYF(MY_WME | MY_WAIT_IF_FULL) & param->myf_rw)))
- goto err;
- sort_info->key_block_end=sort_info->key_block+param->sort_key_blocks;
- info->opt_flag|=WRITE_CACHE_USED;
- info->rec_cache.file=info->dfile; /* for sort_delete_record */
- if (!(sort_info->record=(byte*) my_malloc((uint) share->base.pack_reclength,
- MYF(0))))
- {
- mi_check_print_error(param,"Not enough memory for extra record");
- goto err;
- }
- if (!rep_quick)
- {
- if ((new_file=my_raid_create(fn_format(param->temp_filename,name,"",
- DATA_TMP_EXT,
- 2+4),
- 0,param->tmpfile_createflag,
- share->base.raid_type,
- share->base.raid_chunks,
- share->base.raid_chunksize,
- MYF(0))) < 0)
- {
- mi_check_print_error(param,"Can't create new tempfile: '%s'",
- param->temp_filename);
- goto err;
- }
- if (filecopy(param, new_file,info->dfile,0L,new_header_length,
- "datafile-header"))
- goto err;
- if (param->testflag & T_UNPACK)
- {
- share->options&= ~HA_OPTION_COMPRESS_RECORD;
- mi_int2store(share->state.header.options,share->options);
- }
- share->state.dellink= HA_OFFSET_ERROR;
- info->rec_cache.file=new_file;
- }
- info->update= (short) (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
- if (!(param->testflag & T_CREATE_MISSING_KEYS))
- {
- /*
- Flush key cache for this file if we are calling this outside
- myisamchk
- */
- flush_key_blocks(share->kfile, FLUSH_IGNORE_CHANGED);
- /* Clear the pointers to the given rows */
- for (i=0 ; i < share->base.keys ; i++)
- share->state.key_root[i]= HA_OFFSET_ERROR;
- for (i=0 ; i < share->state.header.max_block_size ; i++)
- share->state.key_del[i]= HA_OFFSET_ERROR;
- info->state->key_file_length=share->base.keystart;
- }
- else
- {
- if (flush_key_blocks(share->kfile, FLUSH_FORCE_WRITE))
- goto err;
- key_map= ~key_map; /* Create the missing keys */
- }
- sort_info->info=info;
- sort_info->param = param;
- if ((sort_info->new_data_file_type=share->data_file_type) ==
- COMPRESSED_RECORD && param->testflag & T_UNPACK)
- {
- if (share->options & HA_OPTION_PACK_RECORD)
- sort_info->new_data_file_type = DYNAMIC_RECORD;
- else
- sort_info->new_data_file_type = STATIC_RECORD;
- }
- sort_info->filepos=new_header_length;
- sort_info->dupp=0;
- sort_info->buff=0;
- param->read_cache.end_of_file=sort_info->filelength=
- my_seek(param->read_cache.file,0L,MY_SEEK_END,MYF(0));
- if (share->data_file_type == DYNAMIC_RECORD)
- length=max(share->base.min_pack_length+1,share->base.min_block_length);
- else if (share->data_file_type == COMPRESSED_RECORD)
- length=share->base.min_block_length;
- else
- length=share->base.pack_reclength;
- sort_param.max_records=sort_info->max_records=
- ((param->testflag & T_TRUST_HEADER) ? info->state->records :
- (ha_rows) (sort_info->filelength/length+1));
- sort_param.key_cmp=sort_key_cmp;
- sort_param.key_write=sort_key_write;
- sort_param.key_read=sort_key_read;
- sort_param.lock_in_memory=lock_memory;
- sort_param.tmpdir=param->tmpdir;
- sort_param.myf_rw=param->myf_rw;
- sort_param.sort_info=sort_info;
- del=info->state->del;
- if (sort_info->new_data_file_type != COMPRESSED_RECORD &&
- ! rep_quick)
- share->state.checksum=0;
- rec_per_key_part= param->rec_per_key_part;
- for (sort_info->key=0 ; sort_info->key < share->base.keys ;
- rec_per_key_part+=sort_info->keyinfo->keysegs, sort_info->key++)
- {
- sort_info->keyinfo=share->keyinfo+sort_info->key;
- if (!(((ulonglong) 1 << sort_info->key) & key_map))
- {
- /* Remember old statistics for key */
- memcpy((char*) rec_per_key_part,
- (char*) share->state.rec_per_key_part+
- (uint) (rec_per_key_part - param->rec_per_key_part),
- sort_info->keyinfo->keysegs*sizeof(*rec_per_key_part));
- continue;
- }
- if ((!(param->testflag & T_SILENT)))
- printf ("- Fixing index %dn",sort_info->key+1);
- sort_info->max_pos=sort_info->pos=share->pack.header_length;
- sort_info->keyseg=sort_info->keyinfo->seg;
- sort_info->fix_datafile= (my_bool) (sort_info->key == 0 && ! rep_quick);
- bzero((char*) sort_info->unique,sizeof(sort_info->unique));
- sort_param.key_length=share->rec_reflength;
- for (i=0 ; sort_info->keyseg[i].type != HA_KEYTYPE_END; i++)
- {
- sort_param.key_length+=sort_info->keyseg[i].length;
- if (sort_info->keyseg[i].flag & HA_SPACE_PACK)
- sort_param.key_length+=get_pack_length(sort_info->keyseg[i].length);
- if (sort_info->keyseg[i].flag & (HA_BLOB_PART | HA_VAR_LENGTH))
- sort_param.key_length+=2 + test(sort_info->keyseg[i].length >= 127);
- if (sort_info->keyseg[i].flag & HA_NULL_PART)
- sort_param.key_length++;
- }
- info->state->records=info->state->del=share->state.split=0;
- info->state->empty=0;
- if (_create_index_by_sort(&sort_param,
- (my_bool) (!(param->testflag & T_VERBOSE)),
- (uint) param->sort_buffer_length))
- {
- param->retry_repair=1;
- goto err;
- }
- /* Set for next loop */
- sort_param.max_records=sort_info->max_records=
- (ha_rows) info->state->records;
- if (param->testflag & T_STATISTICS)
- update_key_parts(sort_info->keyinfo, rec_per_key_part, sort_info->unique,
- (ulonglong) info->state->records);
- share->state.key_map|=(ulonglong) 1 << sort_info->key;
- if (sort_info->fix_datafile)
- {
- param->read_cache.end_of_file=sort_info->filepos;
- if (write_data_suffix(param,info) || end_io_cache(&info->rec_cache))
- goto err;
- if (param->testflag & T_SAFE_REPAIR)
- {
- /* Don't repair if we loosed more than one row */
- if (info->state->records+1 < start_records)
- {
- info->state->records=start_records;
- goto err;
- }
- }
- share->state.state.data_file_length = info->state->data_file_length
- = sort_info->filepos;
- /* Only whole records */
- share->state.split=info->state->records+info->state->del;
- share->state.version=(ulong) time((time_t*) 0);
- my_close(info->dfile,MYF(0));
- info->dfile=new_file;
- share->data_file_type=sort_info->new_data_file_type;
- share->pack.header_length=(ulong) new_header_length;
- }
- else
- info->state->data_file_length=sort_info->max_pos;
- if (flush_pending_blocks(param))
- goto err;
- param->read_cache.file=info->dfile; /* re-init read cache */
- reinit_io_cache(¶m->read_cache,READ_CACHE,share->pack.header_length,1,
- 1);
- }
- if (param->testflag & T_WRITE_LOOP)
- {
- VOID(fputs(" r",stdout)); VOID(fflush(stdout));
- }
- if (rep_quick && del+sort_info->dupp != info->state->del)
- {
- mi_check_print_error(param,"Couldn't fix table with quick recovery: Found wrong number of deleted records");
- mi_check_print_error(param,"Run recovery again without -q");
- got_error=1;
- param->retry_repair=param->retry_without_quick=1;
- goto err;
- }
- if (rep_quick != 1)
- {
- my_off_t skr=info->state->data_file_length+
- (share->options & HA_OPTION_COMPRESS_RECORD ?
- MEMMAP_EXTRA_MARGIN : 0);
- #ifdef USE_RELOC
- if (share->data_file_type == STATIC_RECORD &&
- skr < share->base.reloc*share->base.min_pack_length)
- skr=share->base.reloc*share->base.min_pack_length;
- #endif
- if (skr != sort_info->filelength && !info->s->base.raid_type)
- if (my_chsize(info->dfile,skr,MYF(0)))
- mi_check_print_warning(param,
- "Can't change size of datafile, error: %d",
- my_errno);
- }
- if (my_chsize(share->kfile,info->state->key_file_length,MYF(0)))
- mi_check_print_warning(param,
- "Can't change size of indexfile, error: %d",
- my_errno);
- if (!(param->testflag & T_SILENT))
- {
- if (start_records != info->state->records)
- printf("Data records: %sn", llstr(info->state->records,llbuff));
- if (sort_info->dupp)
- mi_check_print_warning(param,
- "%s records have been removed",
- llstr(sort_info->dupp,llbuff));
- }
- got_error=0;
- if (&share->state.state != info->state)
- memcpy( &share->state.state, info->state, sizeof(*info->state));
- err:
- got_error|= flush_blocks(param,share->kfile);
- VOID(end_io_cache(&info->rec_cache));
- if (!got_error)
- {
- /* Replace the actual file with the temporary file */
- if (new_file >= 0)
- {
- my_close(new_file,MYF(0));
- info->dfile=new_file= -1;
- if (change_to_newfile(share->filename,MI_NAME_DEXT,
- DATA_TMP_EXT, share->base.raid_chunks,
- (param->testflag & T_BACKUP_DATA ?
- MYF(MY_REDEL_MAKE_BACKUP): MYF(0))) ||
- mi_open_datafile(info,share))
- got_error=1;
- }
- }
- if (got_error)
- {
- if (! param->error_printed)
- mi_check_print_error(param,"%d when fixing table",my_errno);
- if (new_file >= 0)
- {
- VOID(my_close(new_file,MYF(0)));
- VOID(my_raid_delete(param->temp_filename,share->base.raid_chunks,
- MYF(MY_WME)));
- if (info->dfile == new_file)
- info->dfile= -1;
- }
- mi_mark_crashed_on_repair(info);
- }
- else if (key_map == share->state.key_map)
- share->state.changed&= ~STATE_NOT_OPTIMIZED_KEYS;
- share->state.changed|=STATE_NOT_SORTED_PAGES;
- my_free((gptr) sort_info->key_block,MYF(MY_ALLOW_ZERO_PTR));
- my_free(sort_info->record,MYF(MY_ALLOW_ZERO_PTR));
- my_free(sort_info->buff,MYF(MY_ALLOW_ZERO_PTR));
- VOID(end_io_cache(¶m->read_cache));
- info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
- if (!got_error && (param->testflag & T_UNPACK))
- {
- share->state.header.options[0]&= (uchar) ~HA_OPTION_COMPRESS_RECORD;
- share->pack.header_length=0;
- }
- DBUG_RETURN(got_error);
- }
- /* Read next record and return next key */
- static int sort_key_read(SORT_INFO *sort_info, void *key)
- {
- int error;
- MI_INFO *info;
- DBUG_ENTER("sort_key_read");
- info=sort_info->info;
- if ((error=sort_get_next_record(sort_info)))
- DBUG_RETURN(error);
- if (info->state->records == sort_info->max_records)
- {
- mi_check_print_error(sort_info->param,
- "Found too many records; Can`t continue");
- DBUG_RETURN(1);
- }
- (void) _mi_make_key(info,sort_info->key,key,sort_info->record,
- sort_info->filepos);
- DBUG_RETURN(sort_write_record(sort_info));
- } /* sort_key_read */
- /* Read next record from file using parameters in sort_info */
- /* Return -1 if end of file, 0 if ok and > 0 if error */
- static int sort_get_next_record(SORT_INFO *sort_info)
- {
- int searching;
- uint found_record,b_type,left_length;
- my_off_t pos;
- byte *to;
- MI_BLOCK_INFO block_info;
- MI_INFO *info;
- MYISAM_SHARE *share;
- MI_CHECK *param=sort_info->param;
- char llbuff[22],llbuff2[22];
- DBUG_ENTER("sort_get_next_record");
- info=sort_info->info;
- share=info->s;
- switch (share->data_file_type) {
- case STATIC_RECORD:
- for (;;)
- {
- if (my_b_read(¶m->read_cache,sort_info->record,
- share->base.pack_reclength))
- {
- if (param->read_cache.error)
- param->out_flag |= O_DATA_LOST;
- param->retry_repair=param->retry_without_quick=1;
- DBUG_RETURN(-1);
- }
- sort_info->start_recpos=sort_info->pos;
- if (!sort_info->fix_datafile)
- sort_info->filepos=sort_info->pos;
- sort_info->max_pos=(sort_info->pos+=share->base.pack_reclength);
- share->state.split++;
- if (*sort_info->record)
- DBUG_RETURN(0);
- if (!sort_info->fix_datafile)
- {
- info->state->del++;
- info->state->empty+=share->base.pack_reclength;
- }
- }
- case DYNAMIC_RECORD:
- LINT_INIT(to);
- pos=sort_info->pos;
- searching=(sort_info->fix_datafile && (param->testflag & T_EXTEND));
- for (;;)
- {
- found_record=block_info.second_read= 0;
- left_length=1;
- if (searching)
- {
- pos=MY_ALIGN(pos,MI_DYN_ALIGN_SIZE);
- param->retry_without_quick=1;
- sort_info->start_recpos=pos;
- }
- do
- {
- if (pos > sort_info->max_pos)
- sort_info->max_pos=pos;
- if (pos & (MI_DYN_ALIGN_SIZE-1))
- {
- if ((param->testflag & T_VERBOSE) || searching == 0)
- mi_check_print_info(param,"Wrong aligned block at %s",
- llstr(pos,llbuff));
- if (searching)
- goto try_next;
- }
- if (found_record && pos == param->search_after_block)
- mi_check_print_info(param,"Block: %s used by record at %s",
- llstr(param->search_after_block,llbuff),
- llstr(sort_info->start_recpos,llbuff2));
- if (_mi_read_cache(¶m->read_cache,(byte*) block_info.header,pos,
- MI_BLOCK_INFO_HEADER_LENGTH,
- (! found_record ? READING_NEXT : 0) |
- READING_HEADER))
- {
- if (found_record)
- {
- mi_check_print_info(param,
- "Can't read whole record at %s (errno: %d)",
- llstr(sort_info->start_recpos,llbuff),errno);
- goto try_next;
- }
- DBUG_RETURN(-1);
- }
- if (searching && ! sort_info->fix_datafile)
- {
- param->error_printed=1;
- param->retry_repair=param->retry_without_quick=1;
- DBUG_RETURN(1); /* Something wrong with data */
- }
- if (((b_type=_mi_get_block_info(&block_info,-1,pos)) &
- (BLOCK_ERROR | BLOCK_FATAL_ERROR)) ||
- ((b_type & BLOCK_FIRST) &&
- (block_info.rec_len < (uint) share->base.min_pack_length ||
- block_info.rec_len > (uint) share->base.max_pack_length)))
- {
- uint i;
- if (param->testflag & T_VERBOSE || searching == 0)
- mi_check_print_info(param,
- "Wrong bytesec: %3d-%3d-%3d at %10s; Skipped",
- block_info.header[0],block_info.header[1],
- block_info.header[2],llstr(pos,llbuff));
- if (found_record)
- goto try_next;
- block_info.second_read=0;
- searching=1;
- /* Search after block in read header string */
- for (i=MI_DYN_ALIGN_SIZE ;
- i < MI_BLOCK_INFO_HEADER_LENGTH ;
- i+= MI_DYN_ALIGN_SIZE)
- if (block_info.header[i] >= 1 &&
- block_info.header[i] <= MI_MAX_DYN_HEADER_BYTE)
- break;
- pos+=(ulong) i;
- sort_info->start_recpos=pos;
- continue;
- }
- if (b_type & BLOCK_DELETED)
- {
- bool error=0;
- if (block_info.block_len+ (uint) (block_info.filepos-pos) <
- share->base.min_block_length)
- {
- if (!searching)
- mi_check_print_info(param,
- "Deleted block with impossible length %u at %s",
- block_info.block_len,llstr(pos,llbuff));
- error=1;
- }
- else
- {
- if ((block_info.next_filepos != HA_OFFSET_ERROR &&
- block_info.next_filepos >=
- info->state->data_file_length) ||
- (block_info.prev_filepos != HA_OFFSET_ERROR &&
- block_info.prev_filepos >= info->state->data_file_length))
- {
- if (!searching)
- mi_check_print_info(param,
- "Delete link points outside datafile at %s",
- llstr(pos,llbuff));
- error=1;
- }
- }
- if (error)
- {
- if (found_record)
- goto try_next;
- searching=1;
- pos+= MI_DYN_ALIGN_SIZE;
- sort_info->start_recpos=pos;
- block_info.second_read=0;
- continue;
- }
- }
- else
- {
- if (block_info.block_len+ (uint) (block_info.filepos-pos) <
- share->base.min_block_length ||
- block_info.block_len > (uint) share->base.max_pack_length+
- MI_SPLIT_LENGTH)
- {
- if (!searching)
- mi_check_print_info(param,
- "Found block with impossible length %u at %s; Skipped",
- block_info.block_len+ (uint) (block_info.filepos-pos),
- llstr(pos,llbuff));
- if (found_record)
- goto try_next;
- searching=1;
- pos+= MI_DYN_ALIGN_SIZE;
- sort_info->start_recpos=pos;
- block_info.second_read=0;
- continue;
- }
- }
- if (b_type & (BLOCK_DELETED | BLOCK_SYNC_ERROR))
- {
- if (!sort_info->fix_datafile && (b_type & BLOCK_DELETED))
- {
- info->state->empty+=block_info.block_len;
- info->state->del++;
- share->state.split++;
- }
- if (found_record)
- goto try_next;
- if (searching)
- {
- pos+=MI_DYN_ALIGN_SIZE;
- sort_info->start_recpos=pos;
- }
- else
- pos=block_info.filepos+block_info.block_len;
- block_info.second_read=0;
- continue;
- }
- share->state.split++;
- if (! found_record++)
- {
- sort_info->find_length=left_length=block_info.rec_len;
- sort_info->start_recpos=pos;
- if (!sort_info->fix_datafile)
- sort_info->filepos=sort_info->start_recpos;
- if (sort_info->fix_datafile && (param->testflag & T_EXTEND))
- sort_info->pos=block_info.filepos+1;
- else
- sort_info->pos=block_info.filepos+block_info.block_len;
- if (share->base.blobs)
- {
- if (!(to=mi_fix_rec_buff_for_blob(info,block_info.rec_len)))
- {
- mi_check_print_error(param,"Not enough memory for blob at %s",
- llstr(sort_info->start_recpos,llbuff));
- DBUG_RETURN(1);
- }
- }
- else
- to= info->rec_buff;
- }
- if (left_length < block_info.data_len || ! block_info.data_len)
- {
- mi_check_print_info(param,"Found block with too small length at %s; Skipped",
- llstr(sort_info->start_recpos,llbuff));
- goto try_next;
- }
- if (block_info.filepos + block_info.data_len >
- param->read_cache.end_of_file)
- {
- mi_check_print_info(param,"Found block that points outside data file at %s",
- llstr(sort_info->start_recpos,llbuff));
- goto try_next;
- }
- if (_mi_read_cache(¶m->read_cache,to,block_info.filepos,
- block_info.data_len,
- (found_record == 1 ? READING_NEXT : 0)))
- {
- mi_check_print_info(param,
- "Read error for block at: %s (error: %d); Skipped",
- llstr(block_info.filepos,llbuff),my_errno);
- goto try_next;
- }
- left_length-=block_info.data_len;
- to+=block_info.data_len;
- pos=block_info.next_filepos;
- if (pos == HA_OFFSET_ERROR && left_length)
- {
- mi_check_print_info(param,"Wrong block with wrong total length starting at %s",
- llstr(sort_info->start_recpos,llbuff));
- goto try_next;
- }
- if (pos + MI_BLOCK_INFO_HEADER_LENGTH > param->read_cache.end_of_file)
- {
- mi_check_print_info(param,"Found link that points at %s (outside data file) at %s",
- llstr(pos,llbuff2),
- llstr(sort_info->start_recpos,llbuff));
- goto try_next;
- }
- } while (left_length);
- if (_mi_rec_unpack(info,sort_info->record,info->rec_buff,
- sort_info->find_length) != MY_FILE_ERROR)
- {
- if (param->read_cache.error < 0)
- DBUG_RETURN(1);
- if ((param->testflag & (T_EXTEND | T_REP)) || searching)
- {
- if (info->s->calc_checksum)
- info->checksum=mi_checksum(info,sort_info->record);
- if (_mi_rec_check(info, sort_info->record))
- {
- mi_check_print_info(param,"Found wrong packed record at %s",
- llstr(sort_info->start_recpos,llbuff));
- goto try_next;
- }
- }
- DBUG_RETURN(0);
- }
- try_next:
- pos=(sort_info->start_recpos+=MI_DYN_ALIGN_SIZE);
- searching=1;
- }
- case COMPRESSED_RECORD:
- for (searching=0 ;; searching=1, sort_info->pos++)
- {
- if (_mi_read_cache(¶m->read_cache,(byte*) block_info.header,
- sort_info->pos,
- share->pack.ref_length,READING_NEXT))
- DBUG_RETURN(-1);
- if (searching && ! sort_info->fix_datafile)
- {
- param->error_printed=1;
- param->retry_repair=param->retry_without_quick=1;
- DBUG_RETURN(1); /* Something wrong with data */
- }
- sort_info->start_recpos=sort_info->pos;
- if (_mi_pack_get_block_info(info,&block_info,-1,sort_info->pos, NullS))
- DBUG_RETURN(-1);
- if (!block_info.rec_len &&
- sort_info->pos + MEMMAP_EXTRA_MARGIN ==
- param->read_cache.end_of_file)
- DBUG_RETURN(-1);
- if (block_info.rec_len < (uint) share->min_pack_length ||
- block_info.rec_len > (uint) share->max_pack_length)
- {
- if (! searching)
- mi_check_print_info(param,"Found block with wrong recordlength: %d at %sn",
- block_info.rec_len,
- llstr(sort_info->pos,llbuff));
- continue;
- }
- if (_mi_read_cache(¶m->read_cache,(byte*) info->rec_buff,
- block_info.filepos, block_info.rec_len,
- READING_NEXT))
- {
- if (! searching)
- mi_check_print_info(param,"Couldn't read whole record from %s",
- llstr(sort_info->pos,llbuff));
- continue;
- }
- if (_mi_pack_rec_unpack(info,sort_info->record,info->rec_buff,
- block_info.rec_len))
- {
- if (! searching)
- mi_check_print_info(param,"Found wrong record at %s",
- llstr(sort_info->pos,llbuff));
- continue;
- }
- if (!sort_info->fix_datafile)
- sort_info->filepos=sort_info->pos;
- sort_info->max_pos=(sort_info->pos=block_info.filepos+
- block_info.rec_len);
- share->state.split++;
- info->packed_length=block_info.rec_len;
- DBUG_RETURN(0);
- }
- }
- DBUG_RETURN(1); /* Impossible */
- }
- /* Write record to new file */
- int sort_write_record(SORT_INFO *sort_info)
- {
- int flag;
- uint length;
- ulong block_length,reclength;
- byte *from;
- byte block_buff[8];
- MI_INFO *info;
- MYISAM_SHARE *share;
- MI_CHECK *param=sort_info->param;
- DBUG_ENTER("sort_write_record");
- info=sort_info->info;
- share=info->s;
- if (sort_info->fix_datafile)
- {
- switch (sort_info->new_data_file_type) {
- case STATIC_RECORD:
- if (my_b_write(&info->rec_cache,sort_info->record,
- share->base.pack_reclength))
- {
- mi_check_print_error(param,"%d when writing to datafile",my_errno);
- DBUG_RETURN(1);
- }
- sort_info->filepos+=share->base.pack_reclength;
- info->s->state.checksum+=mi_static_checksum(info, sort_info->record);
- break;
- case DYNAMIC_RECORD:
- if (! info->blobs)
- from=info->rec_buff;
- else
- {
- /* must be sure that local buffer is big enough */
- reclength=info->s->base.pack_reclength+
- _my_calc_total_blob_length(info,sort_info->record)+
- ALIGN_SIZE(MI_MAX_DYN_BLOCK_HEADER)+MI_SPLIT_LENGTH+
- MI_DYN_DELETE_BLOCK_HEADER;
- if (sort_info->buff_length < reclength)
- {
- if (!(sort_info->buff=my_realloc(sort_info->buff, (uint) reclength,
- MYF(MY_FREE_ON_ERROR |
- MY_ALLOW_ZERO_PTR))))
- DBUG_RETURN(1);
- sort_info->buff_length=reclength;
- }
- from=sort_info->buff+ALIGN_SIZE(MI_MAX_DYN_BLOCK_HEADER);
- }
- info->checksum=mi_checksum(info,sort_info->record);
- reclength=_mi_rec_pack(info,from,sort_info->record);
- info->s->state.checksum+=info->checksum;
- block_length=reclength+ 3 +test(reclength > 65532L);
- if (block_length < share->base.min_block_length)
- block_length=share->base.min_block_length;
- flag=0;
- info->update|=HA_STATE_WRITE_AT_END;
- block_length=MY_ALIGN(block_length,MI_DYN_ALIGN_SIZE);
- if (_mi_write_part_record(info,0L,block_length,HA_OFFSET_ERROR,
- &from,&reclength,&flag))
- {
- mi_check_print_error(param,"%d when writing to datafile",my_errno);
- DBUG_RETURN(1);
- }
- sort_info->filepos+=block_length;
- break;
- case COMPRESSED_RECORD:
- reclength=info->packed_length;
- length=save_pack_length(block_buff,reclength);
- if (info->s->base.blobs)
- length+=save_pack_length(block_buff+length,info->blob_length);
- if (my_b_write(&info->rec_cache,block_buff,length) ||
- my_b_write(&info->rec_cache,(byte*) info->rec_buff,reclength))
- {
- mi_check_print_error(param,"%d when writing to datafile",my_errno);
- DBUG_RETURN(1);
- }
- sort_info->filepos+=reclength+length;
- break;
- }
- }
- info->state->records++;
- if ((param->testflag & T_WRITE_LOOP) &&
- (info->state->records % WRITE_COUNT) == 0)
- {
- char llbuff[22];
- printf("%sr", llstr(info->state->records,llbuff)); VOID(fflush(stdout));
- }
- DBUG_RETURN(0);
- } /* sort_write_record */
- /* Compare two keys from _create_index_by_sort */
- static int sort_key_cmp(SORT_INFO *sort_info, const void *a, const void *b)
- {
- uint not_used;
- return (_mi_key_cmp(sort_info->keyseg,*((uchar**) a),*((uchar**) b),
- USE_WHOLE_KEY, SEARCH_SAME,¬_used));
- } /* sort_key_cmp */
- static int sort_key_write(SORT_INFO *sort_info, const void *a)
- {
- uint diff_pos;
- char llbuff[22],llbuff2[22];
- MI_CHECK *param= sort_info->param;
- int cmp;
- if (sort_info->key_block->inited)
- {
- cmp=_mi_key_cmp(sort_info->keyseg,sort_info->key_block->lastkey,(uchar*) a,
- USE_WHOLE_KEY,SEARCH_FIND | SEARCH_UPDATE ,&diff_pos);
- sort_info->unique[diff_pos-1]++;
- }
- else
- {
- cmp= -1;
- }
- if ((sort_info->keyinfo->flag & HA_NOSAME) && cmp == 0)
- {
- sort_info->dupp++;
- sort_info->info->lastpos=get_record_for_key(sort_info->info,
- sort_info->keyinfo,
- (uchar*) a);
- mi_check_print_warning(param,
- "Duplicate key for record at %10s against record at %10s",
- llstr(sort_info->info->lastpos,llbuff),
- llstr(get_record_for_key(sort_info->info,
- sort_info->keyinfo,
- sort_info->key_block->
- lastkey),
- llbuff2));
- param->error_printed=param->retry_without_quick=1;
- if (sort_info->param->testflag & T_VERBOSE)
- _mi_print_key(stdout,sort_info->keyseg,(uchar*) a, USE_WHOLE_KEY);
- return (sort_delete_record(param));
- }
- #ifndef DBUG_OFF
- if (cmp > 0)
- {
- mi_check_print_error(param,
- "Internal error: Keys are not in order from sort");
- return(1);
- }
- #endif
- return (sort_insert_key(param,sort_info->key_block,(uchar*) a,
- HA_OFFSET_ERROR));
- } /* sort_key_write */
- /* get pointer to record from a key */
- static my_off_t get_record_for_key(MI_INFO *info, MI_KEYDEF *keyinfo,
- uchar *key)
- {
- return _mi_dpos(info,0,key+_mi_keylength(keyinfo,key));
- } /* get_record_for_key */
- /* Insert a key in sort-key-blocks */
- static int sort_insert_key(MI_CHECK *param,
- register SORT_KEY_BLOCKS *key_block, uchar *key,
- my_off_t prev_block)
- {
- uint a_length,t_length,nod_flag;
- my_off_t filepos,key_file_length;
- uchar *anc_buff,*lastkey;
- MI_KEY_PARAM s_temp;
- MI_INFO *info;
- SORT_INFO *sort_info= ¶m->sort_info;
- DBUG_ENTER("sort_insert_key");
- anc_buff=key_block->buff;
- info=sort_info->info;
- lastkey=key_block->lastkey;
- nod_flag= (key_block == sort_info->key_block ? 0 :
- sort_info->info->s->base.key_reflength);
- if (!key_block->inited)
- {
- key_block->inited=1;
- if (key_block == sort_info->key_block_end)
- {
- mi_check_print_error(param,"To many key-block-levels; Try increasing sort_key_blocks");
- DBUG_RETURN(1);
- }
- a_length=2+nod_flag;
- key_block->end_pos=anc_buff+2;
- lastkey=0; /* No previous key in block */
- }
- else
- a_length=mi_getint(anc_buff);
- /* Save pointer to previous block */
- if (nod_flag)
- _mi_kpointer(info,key_block->end_pos,prev_block);
- t_length=(*sort_info->keyinfo->pack_key)(sort_info->keyinfo,nod_flag,
- (uchar*) 0,lastkey,lastkey,key,
- &s_temp);
- (*sort_info->keyinfo->store_key)(sort_info->keyinfo,
- key_block->end_pos+nod_flag,&s_temp);
- a_length+=t_length;
- mi_putint(anc_buff,a_length,nod_flag);
- key_block->end_pos+=t_length;
- if (a_length <= sort_info->keyinfo->block_length)
- {
- VOID(_mi_move_key(sort_info->keyinfo,key_block->lastkey,key));
- key_block->last_length=a_length-t_length;
- DBUG_RETURN(0);
- }
- /* Fill block with end-zero and write filled block */
- mi_putint(anc_buff,key_block->last_length,nod_flag);
- bzero((byte*) anc_buff+key_block->last_length,
- sort_info->keyinfo->block_length- key_block->last_length);
- key_file_length=info->state->key_file_length;
- if ((filepos=_mi_new(info,sort_info->keyinfo)) == HA_OFFSET_ERROR)
- DBUG_RETURN(1);
- /* If we read the page from the key cache, we have to write it back to it */
- if (key_file_length == info->state->key_file_length)
- {
- if (_mi_write_keypage(info, sort_info->keyinfo, filepos,
- anc_buff))
- DBUG_RETURN(1);
- }
- else if (my_pwrite(info->s->kfile,(byte*) anc_buff,
- (uint) sort_info->keyinfo->block_length,filepos,
- param->myf_rw))
- DBUG_RETURN(1);
- DBUG_DUMP("buff",(byte*) anc_buff,mi_getint(anc_buff));
- /* Write separator-key to block in next level */
- if (sort_insert_key(param,key_block+1,key_block->lastkey,filepos))
- DBUG_RETURN(1);
- /* clear old block and write new key in it */
- key_block->inited=0;
- DBUG_RETURN(sort_insert_key(param, key_block,key,prev_block));
- } /* sort_insert_key */
- /* Delete record when we found a duplicated key */
- static int sort_delete_record(MI_CHECK *param)
- {
- uint i;
- int old_file,error;
- uchar *key;
- MI_INFO *info;
- SORT_INFO *sort_info= ¶m->sort_info;
- DBUG_ENTER("sort_delete_record");
- if (param->opt_rep_quick == 1)
- {
- mi_check_print_error(param,
- "Quick-recover aborted; Run recovery without switch 'q' or with switch -qq");
- DBUG_RETURN(1);
- }
- info=sort_info->info;
- if (info->s->options & HA_OPTION_COMPRESS_RECORD)
- {
- mi_check_print_error(param,
- "Recover aborted; Can't run standard recovery on compressed tables with errors in data-file. Use switch 'myisamchk --safe-recover' to fix itn",stderr);;
- DBUG_RETURN(1);
- }
- old_file=info->dfile;
- info->dfile=info->rec_cache.file;
- if (sort_info->key)
- {
- key=info->lastkey+info->s->base.max_key_length;
- if ((error=(*info->s->read_rnd)(info,sort_info->record,info->lastpos,0)) &&
- error != HA_ERR_RECORD_DELETED)
- {
- mi_check_print_error(param,"Can't read record to be removed");
- info->dfile=old_file;
- DBUG_RETURN(1);
- }
- for (i=0 ; i < sort_info->key ; i++)
- {
- uint key_length=_mi_make_key(info,i,key,sort_info->record,info->lastpos);
- if (_mi_ck_delete(info,i,key,key_length))
- {
- mi_check_print_error(param,"Can't delete key %d from record to be removed",i+1);
- info->dfile=old_file;
- DBUG_RETURN(1);
- }
- }
- if (info->s->calc_checksum)
- info->s->state.checksum-=(*info->s->calc_checksum)(info,
- sort_info->record);
- }
- error=flush_io_cache(&info->rec_cache) || (*info->s->delete_record)(info);
- info->dfile=old_file; /* restore actual value */
- info->state->records--;
- DBUG_RETURN(error);
- } /* sort_delete_record */
- /* Fix all pending blocks and flush everything to disk */
- static int flush_pending_blocks(MI_CHECK *param)
- {
- uint nod_flag,length;
- my_off_t filepos,key_file_length;
- MI_INFO *info;
- SORT_KEY_BLOCKS *key_block;
- SORT_INFO *sort_info= ¶m->sort_info;
- DBUG_ENTER("flush_pending_blocks");
- filepos= HA_OFFSET_ERROR; /* if empty file */
- info=sort_info->info;
- nod_flag=0;
- for (key_block=sort_info->key_block ; key_block->inited ; key_block++)
- {
- key_block->inited=0;
- length=mi_getint(key_block->buff);
- if (nod_flag)
- _mi_kpointer(info,key_block->end_pos,filepos);
- key_file_length=info->state->key_file_length;
- bzero((byte*) key_block->buff+length,
- sort_info->keyinfo->block_length-length);
- if ((filepos=_mi_new(info,sort_info->keyinfo)) == HA_OFFSET_ERROR)
- DBUG_RETURN(1);
- /* If we read the page from the key cache, we have to write it back */
- if (key_file_length == info->state->key_file_length)
- {
- if (_mi_write_keypage(info, sort_info->keyinfo, filepos,
- key_block->buff))
- DBUG_RETURN(1);
- }
- else if (my_pwrite(info->s->kfile,(byte*) key_block->buff,
- (uint) sort_info->keyinfo->block_length,filepos,
- param->myf_rw))
- DBUG_RETURN(1);
- DBUG_DUMP("buff",(byte*) key_block->buff,length);
- nod_flag=1;
- }
- info->s->state.key_root[sort_info->key]=filepos; /* Last is root for tree */
- DBUG_RETURN(0);
- } /* flush_pending_blocks */
- /* alloc space and pointers for key_blocks */
- static SORT_KEY_BLOCKS *alloc_key_blocks(MI_CHECK *param, uint blocks,
- uint buffer_length)
- {
- reg1 uint i;
- SORT_KEY_BLOCKS *block;
- DBUG_ENTER("alloc_key_blocks");
- if (!(block=(SORT_KEY_BLOCKS*) my_malloc((sizeof(SORT_KEY_BLOCKS)+
- buffer_length+IO_SIZE)*blocks,
- MYF(0))))
- {
- mi_check_print_error(param,"Not Enough memory for sort-key-blocks");
- return(0);
- }
- for (i=0 ; i < blocks ; i++)
- {
- block[i].inited=0;
- block[i].buff=(uchar*) (block+blocks)+(buffer_length+IO_SIZE)*i;
- }
- DBUG_RETURN(block);
- } /* alloc_key_blocks */
- /* Check if file is almost full */
- int test_if_almost_full(MI_INFO *info)
- {
- if (info->s->options & HA_OPTION_COMPRESS_RECORD)
- return 0;
- return (my_seek(info->s->kfile,0L,MY_SEEK_END,MYF(0))/10*9 >
- (my_off_t) (info->s->base.max_key_file_length) ||
- my_seek(info->dfile,0L,MY_SEEK_END,MYF(0))/10*9 >
- (my_off_t) info->s->base.max_data_file_length);
- }
- /* Recreate table with bigger more alloced record-data */
- int recreate_table(MI_CHECK *param, MI_INFO **org_info, char *filename)
- {
- int error;
- MI_INFO info;
- MYISAM_SHARE share;
- MI_KEYDEF *keyinfo,*key,*key_end;
- MI_KEYSEG *keysegs,*keyseg;
- MI_COLUMNDEF *recdef,*rec,*end;
- MI_UNIQUEDEF *uniquedef,*u_ptr,*u_end;
- MI_STATUS_INFO status_info;
- uint unpack,key_parts;
- ha_rows max_records;
- char name[FN_REFLEN];
- ulonglong file_length,tmp_length;
- MI_CREATE_INFO create_info;
- error=1; /* Default error */
- info= **org_info;
- status_info= (*org_info)->state[0];
- info.state= &status_info;
- share= *(*org_info)->s;
- unpack= (share.options & HA_OPTION_COMPRESS_RECORD) &&
- (param->testflag & T_UNPACK);
- if (!(keyinfo=(MI_KEYDEF*) my_alloca(sizeof(MI_KEYDEF)*share.base.keys)))
- return 0;
- memcpy((byte*) keyinfo,(byte*) share.keyinfo,
- (size_t) (sizeof(MI_KEYDEF)*share.base.keys));
- key_parts= share.base.all_key_parts;
- if (!(keysegs=(MI_KEYSEG*) my_alloca(sizeof(MI_KEYSEG)*
- (key_parts+share.base.keys))))
- {
- my_afree((gptr) keyinfo);
- return 1;
- }
- if (!(recdef=(MI_COLUMNDEF*)
- my_alloca(sizeof(MI_COLUMNDEF)*(share.base.fields+1))))
- {
- my_afree((gptr) keyinfo);
- my_afree((gptr) keysegs);
- return 1;
- }
- if (!(uniquedef=(MI_UNIQUEDEF*)
- my_alloca(sizeof(MI_UNIQUEDEF)*(share.state.header.uniques+1))))
- {
- my_afree((gptr) recdef);
- my_afree((gptr) keyinfo);
- my_afree((gptr) keysegs);
- return 1;
- }
- /* Copy the column definitions */
- memcpy((byte*) recdef,(byte*) share.rec,
- (size_t) (sizeof(MI_COLUMNDEF)*(share.base.fields+1)));
- for (rec=recdef,end=recdef+share.base.fields; rec != end ; rec++)
- {
- if (unpack && !(share.options & HA_OPTION_PACK_RECORD) &&
- rec->type != FIELD_BLOB &&
- rec->type != FIELD_VARCHAR &&
- rec->type != FIELD_CHECK)
- rec->type=(int) FIELD_NORMAL;
- }
- /* Change the new key to point at the saved key segments */
- memcpy((byte*) keysegs,(byte*) share.keyparts,
- (size_t) (sizeof(MI_KEYSEG)*(key_parts+share.base.keys+
- share.state.header.uniques)));
- keyseg=keysegs;
- for (key=keyinfo,key_end=keyinfo+share.base.keys; key != key_end ; key++)
- {
- key->seg=keyseg;
- for (; keyseg->type ; keyseg++)
- {
- if (param->language)
- keyseg->language=param->language; /* change language */
- }
- keyseg++; /* Skipp end pointer */
- }
- /* Copy the unique definitions and change them to point at the new key
- segments*/
- memcpy((byte*) uniquedef,(byte*) share.uniqueinfo,
- (size_t) (sizeof(MI_UNIQUEDEF)*(share.state.header.uniques)));
- for (u_ptr=uniquedef,u_end=uniquedef+share.state.header.uniques;
- u_ptr != u_end ; u_ptr++)
- {
- u_ptr->seg=keyseg;
- keyseg+=u_ptr->keysegs+1;
- }
- if (share.options & HA_OPTION_COMPRESS_RECORD)
- share.base.records=max_records=info.state->records;
- else if (share.base.min_pack_length)
- max_records=(ha_rows) (my_seek(info.dfile,0L,MY_SEEK_END,MYF(0)) /
- (ulong) share.base.min_pack_length);
- else
- max_records=0;
- unpack= (share.options & HA_OPTION_COMPRESS_RECORD) &&
- (param->testflag & T_UNPACK);
- share.options&= ~HA_OPTION_TEMP_COMPRESS_RECORD;
- file_length=(ulonglong) my_seek(info.dfile,0L,MY_SEEK_END,MYF(0));
- tmp_length= file_length+file_length/10;
- set_if_bigger(file_length,param->max_data_file_length);
- set_if_bigger(file_length,tmp_length);
- set_if_bigger(file_length,(ulonglong) share.base.max_data_file_length);
- VOID(mi_close(*org_info));
- bzero((char*) &create_info,sizeof(create_info));
- create_info.max_rows=max(max_records,share.base.records);
- create_info.reloc_rows=share.base.reloc;
- create_info.old_options=(share.options |
- (unpack ? HA_OPTION_TEMP_COMPRESS_RECORD : 0));
- create_info.data_file_length=file_length;
- create_info.auto_increment=share.state.auto_increment;
- create_info.raid_type= share.base.raid_type;
- create_info.raid_chunks= share.base.raid_chunks;
- create_info.raid_chunksize= share.base.raid_chunksize;
- create_info.language = (param->language ? param->language :
- share.state.header.language);
- if (mi_create(fn_format(name,filename,"",MI_NAME_IEXT,
- 4+ (param->opt_follow_links ? 16 : 0)),
- share.base.keys - share.state.header.uniques,
- keyinfo, share.base.fields, recdef,
- share.state.header.uniques, uniquedef,
- &create_info,
- HA_DONT_TOUCH_DATA))
- {
- mi_check_print_error(param,"Got error %d when trying to recreate indexfile",my_errno);
- goto end;
- }
- *org_info=mi_open(name,O_RDWR,
- (param->testflag & T_WAIT_FOREVER) ? HA_OPEN_WAIT_IF_LOCKED :
- (param->testflag & T_DESCRIPT) ? HA_OPEN_IGNORE_IF_LOCKED :
- HA_OPEN_ABORT_IF_LOCKED);
- if (!*org_info)
- {
- mi_check_print_error(param,"Got error %d when trying to open re-created indexfile",
- my_errno);
- goto end;
- }
- /* We are modifing */
- (*org_info)->s->options&= ~HA_OPTION_READ_ONLY_DATA;
- VOID(_mi_readinfo(*org_info,F_WRLCK,0));
- (*org_info)->state->records=info.state->records;
- if (share.state.create_time)
- (*org_info)->s->state.create_time=share.state.create_time;
- (*org_info)->s->state.unique=(*org_info)->this_unique=
- share.state.unique;
- (*org_info)->s->state.checksum=share.state.checksum;
- (*org_info)->state->del=info.state->del;
- (*org_info)->s->state.dellink=share.state.dellink;
- (*org_info)->state->empty=info.state->empty;
- (*org_info)->state->data_file_length=info.state->data_file_length;
- if (update_state_info(param,*org_info,UPDATE_TIME | UPDATE_STAT |
- UPDATE_OPEN_COUNT))
- goto end;
- error=0;
- end:
- my_afree((gptr) uniquedef);
- my_afree((gptr) keyinfo);
- my_afree((gptr) recdef);
- my_afree((gptr) keysegs);
- return error;
- }
- /* write suffix to data file if neaded */
- int write_data_suffix(MI_CHECK *param, MI_INFO *info)
- {
- if (info->s->options & HA_OPTION_COMPRESS_RECORD &&
- param->sort_info.fix_datafile)
- {
- char buff[MEMMAP_EXTRA_MARGIN];
- bzero(buff,sizeof(buff));
- if (my_b_write(&info->rec_cache,buff,sizeof(buff)))
- {
- mi_check_print_error(param,"%d when writing to datafile",my_errno);
- return 1;
- }
- param->read_cache.end_of_file+=sizeof(buff);
- }
- return 0;
- }
- /* Update state and myisamchk_time of indexfile */
- int update_state_info(MI_CHECK *param, MI_INFO *info,uint update)
- {
- MYISAM_SHARE *share=info->s;
- if (update & UPDATE_OPEN_COUNT)
- {
- share->state.open_count=0;
- share->global_changed=0;
- }
- if (update & UPDATE_STAT)
- {
- uint key_parts= mi_uint2korr(share->state.header.key_parts);
- share->state.rec_per_key_rows=info->state->records;
- memcpy((char*) share->state.rec_per_key_part,
- (char*) param->rec_per_key_part,
- sizeof(*param->rec_per_key_part)*key_parts);
- share->state.changed&= ~STATE_NOT_ANALYZED;
- }
- if (update & (UPDATE_STAT | UPDATE_SORT | UPDATE_TIME | UPDATE_AUTO_INC))
- {
- if (update & UPDATE_TIME)
- {
- share->state.check_time= (long) time((time_t*) 0);
- if (!share->state.create_time)
- share->state.create_time=share->state.check_time;
- }
- if (mi_state_info_write(share->kfile,&share->state,1+2))
- goto err;
- share->changed=0;
- }
- { /* Force update of status */
- int error;
- uint r_locks=share->r_locks,w_locks=share->w_locks;
- share->r_locks=share->w_locks=0;
- error=_mi_writeinfo(info,WRITEINFO_NO_UNLOCK);
- share->r_locks=r_locks; share->w_locks=w_locks;
- if (!error)
- return 0;
- }
- err:
- mi_check_print_error(param,"%d when updateing keyfile",my_errno);
- return 1;
- }
- /*
- Update auto increment value for a table
- When setting the 'repair_only' flag we only want to change the
- old auto_increment value if its wrong (smaller than some given key).
- The reason is that we shouldn't change the auto_increment value
- for a table without good reason when only doing a repair; If the
- user have inserted and deleted rows, the auto_increment value
- may be bigger than the biggest current row and this is ok.
- If repair_only is not set, we will update the flag to the value in
- param->auto_increment is bigger than the biggest key.
- */
- void update_auto_increment_key(MI_CHECK *param, MI_INFO *info,
- my_bool repair_only)
- {
- if (!info->s->base.auto_key ||
- !(((ulonglong) 1 << (info->s->base.auto_key-1)
- & info->s->state.key_map)))
- {
- if (!(param->testflag & T_VERY_SILENT))
- mi_check_print_info(param,
- "Table: %s doesn't have an auto increment keyn",
- param->isam_file_name);
- return;
- }
- if (!(param->testflag & T_SILENT) &&
- !(param->testflag & (T_REP | T_REP_BY_SORT)))
- printf("Updating MyISAM file: %sn", param->isam_file_name);
- /* We have to use keyread here as a normal read uses info->rec_buff */
- mi_extra(info,HA_EXTRA_KEYREAD);
- if (mi_rlast(info,info->rec_buff, info->s->base.auto_key-1))
- {
- if (my_errno != HA_ERR_END_OF_FILE)
- {
- mi_extra(info,HA_EXTRA_NO_KEYREAD);
- mi_check_print_error(param,"%d when reading last record",my_errno);
- return;
- }
- if (!repair_only)
- info->s->state.auto_increment=param->auto_increment_value;
- }
- else
- {
- ulonglong auto_increment= (repair_only ? info->s->state.auto_increment :
- param->auto_increment_value);
- info->s->state.auto_increment=0;
- update_auto_increment(info,info->rec_buff);
- set_if_bigger(info->s->state.auto_increment,auto_increment);
- }
- mi_extra(info,HA_EXTRA_NO_KEYREAD);
- update_state_info(param, info, UPDATE_AUTO_INC);
- return;
- }
- /* calculate unique keys for each part key */
- static void update_key_parts(MI_KEYDEF *keyinfo,
- ulong *rec_per_key_part,
- ulonglong *unique,
- ulonglong records)
- {
- ulonglong count=0,tmp;
- uint parts;
- for (parts=0 ; parts < keyinfo->keysegs ; parts++)
- {
- count+=unique[parts];
- if (count == 0)
- tmp=records;
- else
- tmp= (records + (count+1)/2) / (count+1);
- if (tmp >= (ulonglong) ~(ulong) 0)
- tmp=(ulonglong) ~(ulong) 0;
- *rec_per_key_part=(ulong) tmp;
- rec_per_key_part++;
- }
- }
- ha_checksum mi_byte_checksum(const byte *buf, uint length)
- {
- ha_checksum crc;
- const byte *end=buf+length;
- for (crc=0; buf != end; buf++)
- crc=((crc << 1) + *((uchar*) buf)) +
- test(crc & (((ha_checksum) 1) << (8*sizeof(ha_checksum)-1)));
- return crc;
- }
- /*
- Deactive all not unique index that can be recreated fast
- These include packed keys on which sorting will use more temporary
- space than the max allowed file length or for which the unpacked keys
- will take much more space than packed keys.
- Note that 'rows' may be zero for the case when we don't know how many
- rows we will put into the file.
- */
- static my_bool mi_too_big_key_for_sort(MI_KEYDEF *key, ha_rows rows)
- {
- return (key->flag & (HA_BINARY_PACK_KEY | HA_VAR_LENGTH_KEY | HA_FULLTEXT) &&
- ((ulonglong) rows * key->maxlength >
- (ulonglong) myisam_max_temp_length ||
- (ulonglong) rows * (key->maxlength - key->minlength) / 2 >
- myisam_max_extra_temp_length ||
- (rows == 0 && (key->maxlength / key->minlength) > 2)));
- }
- void mi_disable_non_unique_index(MI_INFO *info, ha_rows rows)
- {
- MYISAM_SHARE *share=info->s;
- uint i;
- if (!info->state->records) /* Don't do this if old rows */
- {
- MI_KEYDEF *key=share->keyinfo;
- for (i=0 ; i < share->base.keys ; i++,key++)
- {
- if (!(key->flag & HA_NOSAME) && ! mi_too_big_key_for_sort(key,rows) &&
- info->s->base.auto_key != i+1)
- {
- share->state.key_map&= ~ ((ulonglong) 1 << i);
- info->update|= HA_STATE_CHANGED;
- }
- }
- }
- }
- /*
- Return TRUE if we can use repair by sorting
- One can set the force argument to force to use sorting
- even if the temporary file would be quite big!
- */
- my_bool mi_test_if_sort_rep(MI_INFO *info, ha_rows rows,
- my_bool force)
- {
- MYISAM_SHARE *share=info->s;
- uint i;
- MI_KEYDEF *key=share->keyinfo;
- if (!share->state.key_map)
- return FALSE; /* Can't use sort */
- for (i=0 ; i < share->base.keys ; i++,key++)
- {
- /* It's to disable repair_by_sort for ft-keys.
- Another solution would be to make ft-keys just too_big_key_for_sort,
- but then they won't be disabled by dectivate_non_unique_index
- and so they will be created at the first stage. As ft-key creation
- is very time-consuming process, it's better to leave it to repair stage
- but this repair shouldn't be repair_by_sort (serg)
- */
- if ((!force && mi_too_big_key_for_sort(key,rows)) ||
- (key->flag & HA_FULLTEXT))
- return FALSE;
- }
- return TRUE;
- }