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mariadb/storage/maria/ma_open.c
unknown e27890cab0 WL#3072 Maria recovery 
* create page cache before initializing engine and not after, because
Maria's recovery needs a page cache
* make the creation of a bitmap page more crash-resistent
* bugfix (see ma_blockrec.c)
* back to old way: create an 8k bitmap page when creating table
* preparations for the UNDO phase: recreate TRNs
* preparations for Checkpoint: list of dirty pages, testing
of rec_lsn to know if page should be skipped during Recovery
(unused in this patch as no Checkpoint module pushed yet)
* maria_chk tags repaired table with a special LSN
* reworking all around in ma_recovery.c (less duplication)


mysys/my_realloc.c:
  noted an issue in my_realloc()
sql/mysqld.cc:
  page cache needs to be created before engines are initialized,
  because Maria's initialization may do a recovery which needs
  the page cache.
storage/maria/ha_maria.cc:
  update to new prototype
storage/maria/ma_bitmap.c:
  when creating the first bitmap page we used chsize to 8192 bytes then 
  pwrite (overwrite) the last 2 bytes (8191-8192). If crash between
  the two operations, this leaves a bitmap page full without its end
  marker. A later recovery may try to read this page and find it
  exists and misses a marker and conclude it's corrupted and fail.
  Changing the chsize to only 8190 bytes: recovery will then find
  the page is too short and recreate it entirely.
storage/maria/ma_blockrec.c:
  Fix for a bug: when executing a REDO, if the data page is created,
  data_file_length was increased before _ma_bitmap_set():
  _ma_bitmap_set() called _ma_read_bitmap_page() which, due to the
  increased data_file_length, expected to find a bitmap page on disk
  with a correct end marker; if the bitmap page didn't exist already
  in fact, this failed. Fixed by increasing data_file_length only after
  _ma_read_bitmap_page() has created the new bitmap page correctly.
  This bug could happen every time a REDO is about creating a new
  bitmap page.
storage/maria/ma_check.c:
  empty data file has a bitmap page
storage/maria/ma_control_file.c:
  useless parameter to ma_control_file_create_or_open(), just
  test if this is recovery.
storage/maria/ma_control_file.h:
  new prototype
storage/maria/ma_create.c:
  Back to how it was before: maria_create() creates an 8k bitmap page.
  Thus (bugfix) data_file_length needs to reflect this instead of being 0.
storage/maria/ma_loghandler.c:
  as ma_test1 and ma_test2 now use real transactions and not
  dummy_transaction_object, REDO for INSERT/UPDATE/DELETE are always
  about real transactions, can assert this.
  A function for Recovery to assign a short id to a table.
storage/maria/ma_loghandler.h:
  new function
storage/maria/ma_loghandler_lsn.h:
  maria_chk tags repaired tables with this LSN
storage/maria/ma_open.c:
  * enforce that DMLs on transactional tables use real transactions
  and not dummy_transaction_object.
  * test if table was repaired with maria_chk (which has to been
  seen as an import of an external table into the server), test
  validity of create_rename_lsn (header corruption detection)
  * comments.
storage/maria/ma_recovery.c:
  * preparations for the UNDO phase: recreate TRNs
  * preparations for Checkpoint: list of dirty pages, testing
  of rec_lsn to know if page should be skipped during Recovery
  (unused in this patch as no Checkpoint module pushed yet)
  * reworking all around (less duplication)
storage/maria/ma_recovery.h:
  a parameter to say if the UNDO phase should be skipped
storage/maria/maria_chk.c:
  tag repaired tables with a special LSN
storage/maria/maria_read_log.c:
  * update to new prototype
  * no UNDO phase in maria_read_log for now
storage/maria/trnman.c:
  * a function for Recovery to create a transaction (TRN), needed
  in the UNDO phase
  * a function for Recovery to grab an existing transaction, needed
  in the UNDO phase (rollback all existing transactions)
storage/maria/trnman_public.h:
  new functions
2007-08-29 16:43:01 +02:00

1510 lines
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/* Copyright (C) 2006 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; version 2 of the License.
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 */
/* open a isam-database */
#include "ma_fulltext.h"
#include "ma_sp_defs.h"
#include "ma_rt_index.h"
#include "ma_blockrec.h"
#include "trnman.h"
#include <m_ctype.h>
#if defined(MSDOS) || defined(__WIN__)
#ifdef __WIN__
#include <fcntl.h>
#else
#include <process.h> /* Prototype for getpid */
#endif
#endif
#ifdef VMS
#include "static.c"
#endif
static void setup_key_functions(MARIA_KEYDEF *keyinfo);
static my_bool maria_scan_init_dummy(MARIA_HA *info);
static void maria_scan_end_dummy(MARIA_HA *info);
static my_bool maria_once_init_dummy(MARIA_SHARE *, File);
static my_bool maria_once_end_dummy(MARIA_SHARE *);
static uchar *_ma_base_info_read(uchar *ptr, MARIA_BASE_INFO *base);
#define get_next_element(to,pos,size) { memcpy((char*) to,pos,(size_t) size); \
pos+=size;}
#define disk_pos_assert(pos, end_pos) \
if (pos > end_pos) \
{ \
my_errno=HA_ERR_CRASHED; \
goto err; \
}
/******************************************************************************
** Return the shared struct if the table is already open.
** In MySQL the server will handle version issues.
******************************************************************************/
MARIA_HA *_ma_test_if_reopen(char *filename)
{
LIST *pos;
for (pos=maria_open_list ; pos ; pos=pos->next)
{
MARIA_HA *info=(MARIA_HA*) pos->data;
MARIA_SHARE *share=info->s;
if (!strcmp(share->unique_file_name,filename) && share->last_version)
return info;
}
return 0;
}
/*
Open a new instance of an already opened Maria table
SYNOPSIS
maria_clone_internal()
share Share of already open table
mode Mode of table (O_RDONLY | O_RDWR)
data_file Filedescriptor of data file to use < 0 if one should open
open it.
RETURN
# Maria handler
0 Error
*/
static MARIA_HA *maria_clone_internal(MARIA_SHARE *share, int mode,
File data_file)
{
int save_errno;
uint errpos;
MARIA_HA info,*m_info;
DBUG_ENTER("maria_clone_internal");
errpos= 0;
bzero((uchar*) &info,sizeof(info));
if (mode == O_RDWR && share->mode == O_RDONLY)
{
my_errno=EACCES; /* Can't open in write mode */
goto err;
}
if (data_file >= 0)
info.dfile.file= data_file;
else if (_ma_open_datafile(&info, share, -1))
goto err;
errpos= 5;
/* alloc and set up private structure parts */
if (!my_multi_malloc(MY_WME,
&m_info,sizeof(MARIA_HA),
&info.blobs,sizeof(MARIA_BLOB)*share->base.blobs,
&info.buff,(share->base.max_key_block_length*2+
share->base.max_key_length),
&info.lastkey,share->base.max_key_length*3+1,
&info.first_mbr_key, share->base.max_key_length,
&info.maria_rtree_recursion_state,
share->have_rtree ? 1024 : 0,
NullS))
goto err;
errpos= 6;
memcpy(info.blobs,share->blobs,sizeof(MARIA_BLOB)*share->base.blobs);
info.lastkey2=info.lastkey+share->base.max_key_length;
info.s=share;
info.cur_row.lastpos= HA_OFFSET_ERROR;
info.update= (short) (HA_STATE_NEXT_FOUND+HA_STATE_PREV_FOUND);
info.opt_flag=READ_CHECK_USED;
info.this_unique= (ulong) info.dfile.file; /* Uniq number in process */
if (share->data_file_type == COMPRESSED_RECORD)
info.this_unique= share->state.unique;
info.this_loop=0; /* Update counter */
info.last_unique= share->state.unique;
info.last_loop= share->state.update_count;
info.lock_type=F_UNLCK;
info.quick_mode=0;
info.bulk_insert=0;
info.ft1_to_ft2=0;
info.errkey= -1;
info.page_changed=1;
info.keyread_buff= info.buff + share->base.max_key_block_length;
if ((*share->init)(&info))
goto err;
pthread_mutex_lock(&share->intern_lock);
info.read_record= share->read_record;
share->reopen++;
share->write_flag=MYF(MY_NABP | MY_WAIT_IF_FULL);
if (share->options & HA_OPTION_READ_ONLY_DATA)
{
info.lock_type=F_RDLCK;
share->r_locks++;
share->tot_locks++;
}
if (share->options & HA_OPTION_TMP_TABLE)
{
share->temporary= share->delay_key_write= 1;
share->write_flag=MYF(MY_NABP);
share->w_locks++; /* We don't have to update status */
share->tot_locks++;
info.lock_type=F_WRLCK;
}
if ((share->options & HA_OPTION_DELAY_KEY_WRITE) &&
maria_delay_key_write)
share->delay_key_write=1;
info.state= &share->state.state; /* Change global values by default */
if (!share->base.born_transactional) /* but for transactional ones ... */
info.trn= &dummy_transaction_object; /* ... force crash if no trn given */
pthread_mutex_unlock(&share->intern_lock);
/* Allocate buffer for one record */
/* prerequisites: info->rec_buffer == 0 && info->rec_buff_size == 0 */
if (_ma_alloc_buffer(&info.rec_buff, &info.rec_buff_size,
share->base.default_rec_buff_size))
goto err;
bzero(info.rec_buff, share->base.default_rec_buff_size);
*m_info=info;
#ifdef THREAD
thr_lock_data_init(&share->lock,&m_info->lock,(void*) m_info);
#endif
m_info->open_list.data=(void*) m_info;
maria_open_list=list_add(maria_open_list,&m_info->open_list);
DBUG_RETURN(m_info);
err:
save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
if ((save_errno == HA_ERR_CRASHED) ||
(save_errno == HA_ERR_CRASHED_ON_USAGE) ||
(save_errno == HA_ERR_CRASHED_ON_REPAIR))
_ma_report_error(save_errno, share->open_file_name);
switch (errpos) {
case 6:
(*share->end)(&info);
my_free((uchar*) m_info,MYF(0));
/* fall through */
case 5:
if (data_file < 0)
VOID(my_close(info.dfile.file, MYF(0)));
break;
}
my_errno=save_errno;
DBUG_RETURN (NULL);
} /* maria_clone_internal */
/* Make a clone of a maria table */
MARIA_HA *maria_clone(MARIA_SHARE *share, int mode)
{
MARIA_HA *new_info;
pthread_mutex_lock(&THR_LOCK_maria);
new_info= maria_clone_internal(share, mode,
share->data_file_type == BLOCK_RECORD ?
share->bitmap.file.file : -1);
pthread_mutex_unlock(&THR_LOCK_maria);
return new_info;
}
/******************************************************************************
open a MARIA table
See my_base.h for the handle_locking argument
if handle_locking and HA_OPEN_ABORT_IF_CRASHED then abort if the table
is marked crashed or if we are not using locking and the table doesn't
have an open count of 0.
******************************************************************************/
MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
{
int kfile,open_mode,save_errno;
uint i,j,len,errpos,head_length,base_pos,info_length,keys,
key_parts,unique_key_parts,fulltext_keys,uniques;
char name_buff[FN_REFLEN], org_name[FN_REFLEN], index_name[FN_REFLEN],
data_name[FN_REFLEN];
char *disk_cache, *disk_pos, *end_pos;
MARIA_HA info,*m_info,*old_info;
MARIA_SHARE share_buff,*share;
ulong rec_per_key_part[HA_MAX_POSSIBLE_KEY*HA_MAX_KEY_SEG];
my_off_t key_root[HA_MAX_POSSIBLE_KEY];
ulonglong max_key_file_length, max_data_file_length;
File data_file= -1;
DBUG_ENTER("maria_open");
LINT_INIT(m_info);
kfile= -1;
errpos= 0;
head_length=sizeof(share_buff.state.header);
bzero((uchar*) &info,sizeof(info));
my_realpath(name_buff, fn_format(org_name,name,"",MARIA_NAME_IEXT,
MY_UNPACK_FILENAME),MYF(0));
pthread_mutex_lock(&THR_LOCK_maria);
old_info= 0;
if ((open_flags & HA_OPEN_COPY) ||
!(old_info=_ma_test_if_reopen(name_buff)))
{
share= &share_buff;
bzero((uchar*) &share_buff,sizeof(share_buff));
share_buff.state.rec_per_key_part=rec_per_key_part;
share_buff.state.key_root=key_root;
share_buff.pagecache= multi_pagecache_search(name_buff, strlen(name_buff),
maria_pagecache);
DBUG_EXECUTE_IF("maria_pretend_crashed_table_on_open",
if (strstr(name, "/t1"))
{
my_errno= HA_ERR_CRASHED;
goto err;
});
if ((kfile=my_open(name_buff,(open_mode=O_RDWR) | O_SHARE,MYF(0))) < 0)
{
if ((errno != EROFS && errno != EACCES) ||
mode != O_RDONLY ||
(kfile=my_open(name_buff,(open_mode=O_RDONLY) | O_SHARE,MYF(0))) < 0)
goto err;
}
share->mode=open_mode;
errpos= 1;
if (my_read(kfile,(char*) share->state.header.file_version,head_length,
MYF(MY_NABP)))
{
my_errno= HA_ERR_NOT_A_TABLE;
goto err;
}
if (memcmp((uchar*) share->state.header.file_version,
(uchar*) maria_file_magic, 4))
{
DBUG_PRINT("error",("Wrong header in %s",name_buff));
DBUG_DUMP("error_dump",(char*) share->state.header.file_version,
head_length);
my_errno=HA_ERR_NOT_A_TABLE;
goto err;
}
share->options= mi_uint2korr(share->state.header.options);
if (share->options &
~(HA_OPTION_PACK_RECORD | HA_OPTION_PACK_KEYS |
HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA |
HA_OPTION_TEMP_COMPRESS_RECORD | HA_OPTION_CHECKSUM |
HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE |
HA_OPTION_RELIES_ON_SQL_LAYER))
{
DBUG_PRINT("error",("wrong options: 0x%lx", share->options));
my_errno=HA_ERR_OLD_FILE;
goto err;
}
if ((share->options & HA_OPTION_RELIES_ON_SQL_LAYER) &&
! (open_flags & HA_OPEN_FROM_SQL_LAYER))
{
DBUG_PRINT("error", ("table cannot be openned from non-sql layer"));
my_errno= HA_ERR_UNSUPPORTED;
goto err;
}
/* Don't call realpath() if the name can't be a link */
if (!strcmp(name_buff, org_name) ||
my_readlink(index_name, org_name, MYF(0)) == -1)
(void) strmov(index_name, org_name);
*strrchr(org_name, '.')= '\0';
(void) fn_format(data_name,org_name,"",MARIA_NAME_DEXT,
MY_APPEND_EXT|MY_UNPACK_FILENAME|MY_RESOLVE_SYMLINKS);
info_length=mi_uint2korr(share->state.header.header_length);
base_pos= mi_uint2korr(share->state.header.base_pos);
if (!(disk_cache=(char*) my_alloca(info_length+128)))
{
my_errno=ENOMEM;
goto err;
}
end_pos=disk_cache+info_length;
errpos= 2;
VOID(my_seek(kfile,0L,MY_SEEK_SET,MYF(0)));
errpos= 3;
if (my_read(kfile,disk_cache,info_length,MYF(MY_NABP)))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
len=mi_uint2korr(share->state.header.state_info_length);
keys= (uint) share->state.header.keys;
uniques= (uint) share->state.header.uniques;
fulltext_keys= (uint) share->state.header.fulltext_keys;
key_parts= mi_uint2korr(share->state.header.key_parts);
unique_key_parts= mi_uint2korr(share->state.header.unique_key_parts);
if (len != MARIA_STATE_INFO_SIZE)
{
DBUG_PRINT("warning",
("saved_state_info_length: %d state_info_length: %d",
len,MARIA_STATE_INFO_SIZE));
}
share->state_diff_length=len-MARIA_STATE_INFO_SIZE;
_ma_state_info_read(disk_cache, &share->state);
len= mi_uint2korr(share->state.header.base_info_length);
if (len != MARIA_BASE_INFO_SIZE)
{
DBUG_PRINT("warning",("saved_base_info_length: %d base_info_length: %d",
len,MARIA_BASE_INFO_SIZE));
}
disk_pos= _ma_base_info_read(disk_cache + base_pos, &share->base);
share->state.state_length=base_pos;
if (!(open_flags & HA_OPEN_FOR_REPAIR) &&
((share->state.changed & STATE_CRASHED) ||
((open_flags & HA_OPEN_ABORT_IF_CRASHED) &&
(my_disable_locking && share->state.open_count))))
{
DBUG_PRINT("error",("Table is marked as crashed. open_flags: %u "
"changed: %u open_count: %u !locking: %d",
open_flags, share->state.changed,
share->state.open_count, my_disable_locking));
my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
goto err;
}
/* sanity check */
if (share->base.keystart > 65535 || share->base.rec_reflength > 8)
{
my_errno=HA_ERR_CRASHED;
goto err;
}
key_parts+=fulltext_keys*FT_SEGS;
if (share->base.max_key_length > maria_max_key_length() ||
keys > MARIA_MAX_KEY || key_parts > MARIA_MAX_KEY * HA_MAX_KEY_SEG)
{
DBUG_PRINT("error",("Wrong key info: Max_key_length: %d keys: %d key_parts: %d", share->base.max_key_length, keys, key_parts));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
/*
If page cache is not initialized, then assume we will create it
after the table is opened!
*/
if (share->base.block_size != maria_block_size &&
share_buff.pagecache->inited != 0)
{
DBUG_PRINT("error", ("Wrong block size %u; Expected %u",
(uint) share->base.block_size,
(uint) maria_block_size));
my_errno=HA_ERR_UNSUPPORTED;
goto err;
}
/* Correct max_file_length based on length of sizeof(off_t) */
max_data_file_length=
(share->options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ?
(((ulonglong) 1 << (share->base.rec_reflength*8))-1) :
(_ma_safe_mul(share->base.pack_reclength,
(ulonglong) 1 << (share->base.rec_reflength*8))-1);
max_key_file_length=
_ma_safe_mul(MARIA_MIN_KEY_BLOCK_LENGTH,
((ulonglong) 1 << (share->base.key_reflength*8))-1);
#if SIZEOF_OFF_T == 4
set_if_smaller(max_data_file_length, INT_MAX32);
set_if_smaller(max_key_file_length, INT_MAX32);
#endif
share->base.max_data_file_length=(my_off_t) max_data_file_length;
share->base.max_key_file_length=(my_off_t) max_key_file_length;
if (share->options & HA_OPTION_COMPRESS_RECORD)
share->base.max_key_length+=2; /* For safety */
if (!my_multi_malloc(MY_WME,
&share,sizeof(*share),
&share->state.rec_per_key_part,sizeof(long)*key_parts,
&share->keyinfo,keys*sizeof(MARIA_KEYDEF),
&share->uniqueinfo,uniques*sizeof(MARIA_UNIQUEDEF),
&share->keyparts,
(key_parts+unique_key_parts+keys+uniques) *
sizeof(HA_KEYSEG),
&share->columndef,
(share->base.fields+1)*sizeof(MARIA_COLUMNDEF),
&share->blobs,sizeof(MARIA_BLOB)*share->base.blobs,
&share->unique_file_name,strlen(name_buff)+1,
&share->index_file_name,strlen(index_name)+1,
&share->data_file_name,strlen(data_name)+1,
&share->open_file_name,strlen(name)+1,
&share->state.key_root,keys*sizeof(my_off_t),
#ifdef THREAD
&share->key_root_lock,sizeof(rw_lock_t)*keys,
#endif
&share->mmap_lock,sizeof(rw_lock_t),
NullS))
goto err;
errpos= 4;
*share=share_buff;
memcpy((char*) share->state.rec_per_key_part,
(char*) rec_per_key_part, sizeof(long)*key_parts);
memcpy((char*) share->state.key_root,
(char*) key_root, sizeof(my_off_t)*keys);
strmov(share->unique_file_name, name_buff);
share->unique_name_length= strlen(name_buff);
strmov(share->index_file_name, index_name);
strmov(share->data_file_name, data_name);
strmov(share->open_file_name, name);
share->block_size= share->base.block_size;
{
HA_KEYSEG *pos=share->keyparts;
for (i=0 ; i < keys ; i++)
{
share->keyinfo[i].share= share;
disk_pos=_ma_keydef_read(disk_pos, &share->keyinfo[i]);
disk_pos_assert(disk_pos + share->keyinfo[i].keysegs * HA_KEYSEG_SIZE,
end_pos);
if (share->keyinfo[i].key_alg == HA_KEY_ALG_RTREE)
share->have_rtree= 1;
share->keyinfo[i].seg=pos;
for (j=0 ; j < share->keyinfo[i].keysegs; j++,pos++)
{
disk_pos=_ma_keyseg_read(disk_pos, pos);
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
else if (pos->type == HA_KEYTYPE_BINARY)
pos->charset= &my_charset_bin;
}
if (share->keyinfo[i].flag & HA_SPATIAL)
{
#ifdef HAVE_SPATIAL
uint sp_segs=SPDIMS*2;
share->keyinfo[i].seg=pos-sp_segs;
share->keyinfo[i].keysegs--;
#else
my_errno=HA_ERR_UNSUPPORTED;
goto err;
#endif
}
else if (share->keyinfo[i].flag & HA_FULLTEXT)
{
if (!fulltext_keys)
{ /* 4.0 compatibility code, to be removed in 5.0 */
share->keyinfo[i].seg=pos-FT_SEGS;
share->keyinfo[i].keysegs-=FT_SEGS;
}
else
{
uint k;
share->keyinfo[i].seg=pos;
for (k=0; k < FT_SEGS; k++)
{
*pos= ft_keysegs[k];
pos[0].language= pos[-1].language;
if (!(pos[0].charset= pos[-1].charset))
{
my_errno=HA_ERR_CRASHED;
goto err;
}
pos++;
}
}
if (!share->ft2_keyinfo.seg)
{
memcpy(& share->ft2_keyinfo, & share->keyinfo[i], sizeof(MARIA_KEYDEF));
share->ft2_keyinfo.keysegs=1;
share->ft2_keyinfo.flag=0;
share->ft2_keyinfo.keylength=
share->ft2_keyinfo.minlength=
share->ft2_keyinfo.maxlength=HA_FT_WLEN+share->base.rec_reflength;
share->ft2_keyinfo.seg=pos-1;
share->ft2_keyinfo.end=pos;
setup_key_functions(& share->ft2_keyinfo);
}
}
setup_key_functions(share->keyinfo+i);
share->keyinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->length=share->base.rec_reflength;
pos->null_bit=0;
pos->flag=0; /* For purify */
pos++;
}
for (i=0 ; i < uniques ; i++)
{
disk_pos=_ma_uniquedef_read(disk_pos, &share->uniqueinfo[i]);
disk_pos_assert(disk_pos + share->uniqueinfo[i].keysegs *
HA_KEYSEG_SIZE, end_pos);
share->uniqueinfo[i].seg=pos;
for (j=0 ; j < share->uniqueinfo[i].keysegs; j++,pos++)
{
disk_pos=_ma_keyseg_read(disk_pos, pos);
if (pos->type == HA_KEYTYPE_TEXT ||
pos->type == HA_KEYTYPE_VARTEXT1 ||
pos->type == HA_KEYTYPE_VARTEXT2)
{
if (!pos->language)
pos->charset=default_charset_info;
else if (!(pos->charset= get_charset(pos->language, MYF(MY_WME))))
{
my_errno=HA_ERR_UNKNOWN_CHARSET;
goto err;
}
}
}
share->uniqueinfo[i].end=pos;
pos->type=HA_KEYTYPE_END; /* End */
pos->null_bit=0;
pos->flag=0;
pos++;
}
share->ftparsers= 0;
}
share->data_file_type= share->state.header.data_file_type;
share->base_length= (BASE_ROW_HEADER_SIZE +
share->base.is_nulls_extended +
share->base.null_bytes +
share->base.pack_bytes +
test(share->options & HA_OPTION_CHECKSUM));
if (open_flags & HA_OPEN_COPY)
{
/*
this instance will be a temporary one used just to create a data
file for REPAIR. Don't do logging. This base information will not go
to disk.
*/
share->base.born_transactional= FALSE;
}
if (share->base.born_transactional)
{
share->page_type= PAGECACHE_LSN_PAGE;
share->base_length+= TRANS_ROW_EXTRA_HEADER_SIZE;
if (share->state.create_rename_lsn == LSN_REPAIRED_BY_MARIA_CHK)
{
/*
Was repaired with maria_chk, maybe later maria_pack-ed. Some sort of
import into the server. It starts its existence (from the point of
view of the server, including server's recovery) now.
*/
if ((open_flags & HA_OPEN_FROM_SQL_LAYER) || maria_in_recovery)
{
share->state.create_rename_lsn= translog_get_horizon();
_ma_update_create_rename_lsn_on_disk(share, TRUE);
}
}
else if (!LSN_VALID(share->state.create_rename_lsn) &&
!(open_flags & HA_OPEN_FOR_REPAIR))
{
/*
If in Recovery, it will not work. If LSN is invalid and not
LSN_REPAIRED_BY_MARIA_CHK, header must be corrupted.
In both cases, must repair.
*/
my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
goto err;
}
}
else
share->page_type= PAGECACHE_PLAIN_PAGE;
share->now_transactional= share->base.born_transactional;
share->base.default_rec_buff_size= max(share->base.pack_reclength,
share->base.max_key_length);
if (share->data_file_type == DYNAMIC_RECORD)
{
share->base.extra_rec_buff_size=
(ALIGN_SIZE(MARIA_MAX_DYN_BLOCK_HEADER) + MARIA_SPLIT_LENGTH +
MARIA_REC_BUFF_OFFSET);
share->base.default_rec_buff_size+= share->base.extra_rec_buff_size;
}
disk_pos_assert(disk_pos + share->base.fields *MARIA_COLUMNDEF_SIZE,
end_pos);
for (i= j= 0 ; i < share->base.fields ; i++)
{
disk_pos=_ma_columndef_read(disk_pos,&share->columndef[i]);
share->columndef[i].pack_type=0;
share->columndef[i].huff_tree=0;
if (share->columndef[i].type == (int) FIELD_BLOB)
{
share->blobs[j].pack_length=
share->columndef[i].length-portable_sizeof_char_ptr;;
share->blobs[j].offset= share->columndef[i].offset;
j++;
}
}
share->columndef[i].type=(int) FIELD_LAST; /* End marker */
if ((share->data_file_type == BLOCK_RECORD ||
share->data_file_type == COMPRESSED_RECORD))
{
if (_ma_open_datafile(&info, share, -1))
goto err;
data_file= info.dfile.file;
}
errpos= 5;
share->kfile.file= kfile;
share->this_process=(ulong) getpid();
share->last_process= share->state.process;
share->base.key_parts=key_parts;
share->base.all_key_parts=key_parts+unique_key_parts;
if (!(share->last_version=share->state.version))
share->last_version=1; /* Safety */
share->rec_reflength=share->base.rec_reflength; /* May be changed */
share->base.margin_key_file_length=(share->base.max_key_file_length -
(keys ? MARIA_INDEX_BLOCK_MARGIN *
share->block_size * keys : 0));
share->block_size= share->base.block_size;
my_afree((uchar*) disk_cache);
_ma_setup_functions(share);
if ((*share->once_init)(share, info.dfile.file))
goto err;
share->is_log_table= FALSE;
if (open_flags & HA_OPEN_TMP_TABLE)
share->options|= HA_OPTION_TMP_TABLE;
if (open_flags & HA_OPEN_DELAY_KEY_WRITE)
share->options|= HA_OPTION_DELAY_KEY_WRITE;
if (mode == O_RDONLY)
share->options|= HA_OPTION_READ_ONLY_DATA;
#ifdef THREAD
thr_lock_init(&share->lock);
VOID(pthread_mutex_init(&share->intern_lock,MY_MUTEX_INIT_FAST));
for (i=0; i<keys; i++)
VOID(my_rwlock_init(&share->key_root_lock[i], NULL));
VOID(my_rwlock_init(&share->mmap_lock, NULL));
if (!thr_lock_inited)
{
/* Probably a single threaded program; Don't use concurrent inserts */
maria_concurrent_insert=0;
}
else if (maria_concurrent_insert)
{
share->concurrent_insert=
((share->options & (HA_OPTION_READ_ONLY_DATA | HA_OPTION_TMP_TABLE |
HA_OPTION_COMPRESS_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD)) ||
(open_flags & HA_OPEN_TMP_TABLE) ||
share->data_file_type == BLOCK_RECORD ||
share->have_rtree) ? 0 : 1;
if (share->concurrent_insert)
{
share->lock.get_status=_ma_get_status;
share->lock.copy_status=_ma_copy_status;
/**
@todo RECOVERY
INSERT DELAYED and concurrent inserts are currently disabled for
transactional tables; when enabled again, we should re-evaluate
what problems the call to _ma_update_status() by
thr_reschedule_write_lock() can do (it may hurt Checkpoint as it
would be without intern_lock, and it modifies the state).
*/
share->lock.update_status=_ma_update_status;
share->lock.restore_status=_ma_restore_status;
share->lock.check_status=_ma_check_status;
}
}
#endif
/*
Memory mapping can only be requested after initializing intern_lock.
*/
if (open_flags & HA_OPEN_MMAP)
{
info.s= share;
maria_extra(&info, HA_EXTRA_MMAP, 0);
}
}
else
{
share= old_info->s;
if (share->data_file_type == BLOCK_RECORD)
data_file= share->bitmap.file.file; /* Only opened once */
}
if (!(m_info= maria_clone_internal(share, mode, data_file)))
goto err;
pthread_mutex_unlock(&THR_LOCK_maria);
DBUG_RETURN(m_info);
err:
save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
if ((save_errno == HA_ERR_CRASHED) ||
(save_errno == HA_ERR_CRASHED_ON_USAGE) ||
(save_errno == HA_ERR_CRASHED_ON_REPAIR))
_ma_report_error(save_errno, name);
switch (errpos) {
case 5:
if (data_file >= 0)
VOID(my_close(data_file, MYF(0)));
if (old_info)
break; /* Don't remove open table */
(*share->once_end)(share);
/* fall through */
case 4:
my_free((uchar*) share,MYF(0));
/* fall through */
case 3:
/* fall through */
case 2:
my_afree((uchar*) disk_cache);
/* fall through */
case 1:
VOID(my_close(kfile,MYF(0)));
/* fall through */
case 0:
default:
break;
}
pthread_mutex_unlock(&THR_LOCK_maria);
my_errno= save_errno;
DBUG_RETURN (NULL);
} /* maria_open */
/*
Reallocate a buffer, if the current buffer is not large enough
*/
my_bool _ma_alloc_buffer(uchar **old_addr, size_t *old_size,
size_t new_size)
{
if (*old_size < new_size)
{
uchar *addr;
if (!(addr= (uchar*) my_realloc((uchar*) *old_addr, new_size,
MYF(MY_ALLOW_ZERO_PTR))))
return 1;
*old_addr= addr;
*old_size= new_size;
}
return 0;
}
ulonglong _ma_safe_mul(ulonglong a, ulonglong b)
{
ulonglong max_val= ~ (ulonglong) 0; /* my_off_t is unsigned */
if (!a || max_val / a < b)
return max_val;
return a*b;
}
/* Set up functions in structs */
void _ma_setup_functions(register MARIA_SHARE *share)
{
share->once_init= maria_once_init_dummy;
share->once_end= maria_once_end_dummy;
share->init= maria_scan_init_dummy;
share->end= maria_scan_end_dummy;
share->scan_init= maria_scan_init_dummy;/* Compat. dummy function */
share->scan_end= maria_scan_end_dummy;/* Compat. dummy function */
share->write_record_init= _ma_write_init_default;
share->write_record_abort= _ma_write_abort_default;
switch (share->data_file_type) {
case COMPRESSED_RECORD:
share->read_record= _ma_read_pack_record;
share->scan= _ma_read_rnd_pack_record;
share->once_init= _ma_once_init_pack_row;
share->once_end= _ma_once_end_pack_row;
/*
Calculate checksum according to data in the original, not compressed,
row.
*/
if (share->state.header.org_data_file_type == STATIC_RECORD)
share->calc_checksum= _ma_static_checksum;
else
share->calc_checksum= _ma_checksum;
share->calc_write_checksum= share->calc_checksum;
break;
case DYNAMIC_RECORD:
share->read_record= _ma_read_dynamic_record;
share->scan= _ma_read_rnd_dynamic_record;
share->delete_record= _ma_delete_dynamic_record;
share->compare_record= _ma_cmp_dynamic_record;
share->compare_unique= _ma_cmp_dynamic_unique;
share->calc_checksum= share->calc_write_checksum= _ma_checksum;
/* add bits used to pack data to pack_reclength for faster allocation */
share->base.pack_reclength+= share->base.pack_bytes;
if (share->base.blobs)
{
share->update_record= _ma_update_blob_record;
share->write_record= _ma_write_blob_record;
}
else
{
share->write_record= _ma_write_dynamic_record;
share->update_record= _ma_update_dynamic_record;
}
break;
case STATIC_RECORD:
share->read_record= _ma_read_static_record;
share->scan= _ma_read_rnd_static_record;
share->delete_record= _ma_delete_static_record;
share->compare_record= _ma_cmp_static_record;
share->update_record= _ma_update_static_record;
share->write_record= _ma_write_static_record;
share->compare_unique= _ma_cmp_static_unique;
share->calc_checksum= share->calc_write_checksum= _ma_static_checksum;
break;
case BLOCK_RECORD:
share->once_init= _ma_once_init_block_record;
share->once_end= _ma_once_end_block_record;
share->init= _ma_init_block_record;
share->end= _ma_end_block_record;
share->write_record_init= _ma_write_init_block_record;
share->write_record_abort= _ma_write_abort_block_record;
share->scan_init= _ma_scan_init_block_record;
share->scan_end= _ma_scan_end_block_record;
share->read_record= _ma_read_block_record;
share->scan= _ma_scan_block_record;
share->delete_record= _ma_delete_block_record;
share->compare_record= _ma_compare_block_record;
share->update_record= _ma_update_block_record;
share->write_record= _ma_write_block_record;
share->compare_unique= _ma_cmp_block_unique;
share->calc_checksum= _ma_checksum;
/*
write_block_record() will calculate the checksum; Tell maria_write()
that it doesn't have to do this.
*/
share->calc_write_checksum= 0;
break;
}
share->file_read= _ma_nommap_pread;
share->file_write= _ma_nommap_pwrite;
share->calc_check_checksum= share->calc_checksum;
if (!(share->options & HA_OPTION_CHECKSUM) &&
share->data_file_type != COMPRESSED_RECORD)
share->calc_checksum= share->calc_write_checksum= 0;
return;
}
static void setup_key_functions(register MARIA_KEYDEF *keyinfo)
{
if (keyinfo->key_alg == HA_KEY_ALG_RTREE)
{
#ifdef HAVE_RTREE_KEYS
keyinfo->ck_insert = maria_rtree_insert;
keyinfo->ck_delete = maria_rtree_delete;
#else
DBUG_ASSERT(0); /* maria_open should check it never happens */
#endif
}
else
{
keyinfo->ck_insert = _ma_ck_write;
keyinfo->ck_delete = _ma_ck_delete;
}
if (keyinfo->flag & HA_BINARY_PACK_KEY)
{ /* Simple prefix compression */
keyinfo->bin_search= _ma_seq_search;
keyinfo->get_key= _ma_get_binary_pack_key;
keyinfo->pack_key= _ma_calc_bin_pack_key_length;
keyinfo->store_key= _ma_store_bin_pack_key;
}
else if (keyinfo->flag & HA_VAR_LENGTH_KEY)
{
keyinfo->get_key= _ma_get_pack_key;
if (keyinfo->seg[0].flag & HA_PACK_KEY)
{ /* Prefix compression */
if (!keyinfo->seg->charset || use_strnxfrm(keyinfo->seg->charset) ||
(keyinfo->seg->flag & HA_NULL_PART))
keyinfo->bin_search= _ma_seq_search;
else
keyinfo->bin_search= _ma_prefix_search;
keyinfo->pack_key= _ma_calc_var_pack_key_length;
keyinfo->store_key= _ma_store_var_pack_key;
}
else
{
keyinfo->bin_search= _ma_seq_search;
keyinfo->pack_key= _ma_calc_var_key_length; /* Variable length key */
keyinfo->store_key= _ma_store_static_key;
}
}
else
{
keyinfo->bin_search= _ma_bin_search;
keyinfo->get_key= _ma_get_static_key;
keyinfo->pack_key= _ma_calc_static_key_length;
keyinfo->store_key= _ma_store_static_key;
}
return;
}
/**
@brief Function to save and store the header in the index file (.MYI)
@param file descriptor of the index file to write
@param state state information to write to the file
@param pWrite bitmap (determines the amount of information to
write, and if my_write() or my_pwrite() should be
used)
@return Operation status
@retval 0 OK
@retval 1 Error
*/
uint _ma_state_info_write(File file, MARIA_STATE_INFO *state, uint pWrite)
{
/** @todo RECOVERY write it only at checkpoint time */
uchar buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
uchar *ptr=buff;
uint i, keys= (uint) state->header.keys;
size_t res;
DBUG_ENTER("_ma_state_info_write");
memcpy_fixed(ptr,&state->header,sizeof(state->header));
ptr+=sizeof(state->header);
/* open_count must be first because of _ma_mark_file_changed ! */
mi_int2store(ptr,state->open_count); ptr+= 2;
/*
if you change the offset of this LSN inside the file, fix
ma_create + ma_rename + ma_delete_all + backward-compatibility.
*/
lsn_store(ptr, state->create_rename_lsn); ptr+= LSN_STORE_SIZE;
*ptr++= (uchar)state->changed;
*ptr++= state->sortkey;
mi_rowstore(ptr,state->state.records); ptr+= 8;
mi_rowstore(ptr,state->state.del); ptr+= 8;
mi_rowstore(ptr,state->split); ptr+= 8;
mi_sizestore(ptr,state->dellink); ptr+= 8;
mi_sizestore(ptr,state->first_bitmap_with_space); ptr+= 8;
mi_sizestore(ptr,state->state.key_file_length); ptr+= 8;
mi_sizestore(ptr,state->state.data_file_length); ptr+= 8;
mi_sizestore(ptr,state->state.empty); ptr+= 8;
mi_sizestore(ptr,state->state.key_empty); ptr+= 8;
mi_int8store(ptr,state->auto_increment); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->state.checksum); ptr+= 8;
mi_int4store(ptr,state->process); ptr+= 4;
mi_int4store(ptr,state->unique); ptr+= 4;
mi_int4store(ptr,state->status); ptr+= 4;
mi_int4store(ptr,state->update_count); ptr+= 4;
ptr+= state->state_diff_length;
for (i=0; i < keys; i++)
{
mi_sizestore(ptr,state->key_root[i]); ptr+= 8;
}
/** @todo RECOVERY key_del is a problem for recovery */
mi_sizestore(ptr,state->key_del); ptr+= 8;
if (pWrite & 2) /* From maria_chk */
{
uint key_parts= mi_uint2korr(state->header.key_parts);
mi_int4store(ptr,state->sec_index_changed); ptr+= 4;
mi_int4store(ptr,state->sec_index_used); ptr+= 4;
mi_int4store(ptr,state->version); ptr+= 4;
mi_int8store(ptr,state->key_map); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->create_time); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->recover_time); ptr+= 8;
mi_int8store(ptr,(ulonglong) state->check_time); ptr+= 8;
mi_sizestore(ptr,state->rec_per_key_rows); ptr+= 8;
for (i=0 ; i < key_parts ; i++)
{
mi_int4store(ptr,state->rec_per_key_part[i]); ptr+=4;
}
}
res= (pWrite & 1) ?
my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
MYF(MY_NABP | MY_THREADSAFE)) :
my_write(file, buff, (size_t) (ptr-buff),
MYF(MY_NABP));
DBUG_RETURN(res != 0);
}
uchar *_ma_state_info_read(uchar *ptr, MARIA_STATE_INFO *state)
{
uint i,keys,key_parts;
memcpy_fixed(&state->header,ptr, sizeof(state->header));
ptr+= sizeof(state->header);
keys= (uint) state->header.keys;
key_parts= mi_uint2korr(state->header.key_parts);
state->open_count = mi_uint2korr(ptr); ptr+= 2;
state->create_rename_lsn= lsn_korr(ptr); ptr+= LSN_STORE_SIZE;
state->changed= (my_bool) *ptr++;
state->sortkey= (uint) *ptr++;
state->state.records= mi_rowkorr(ptr); ptr+= 8;
state->state.del = mi_rowkorr(ptr); ptr+= 8;
state->split = mi_rowkorr(ptr); ptr+= 8;
state->dellink= mi_sizekorr(ptr); ptr+= 8;
state->first_bitmap_with_space= mi_sizekorr(ptr); ptr+= 8;
state->state.key_file_length = mi_sizekorr(ptr); ptr+= 8;
state->state.data_file_length= mi_sizekorr(ptr); ptr+= 8;
state->state.empty = mi_sizekorr(ptr); ptr+= 8;
state->state.key_empty= mi_sizekorr(ptr); ptr+= 8;
state->auto_increment=mi_uint8korr(ptr); ptr+= 8;
state->state.checksum=(ha_checksum) mi_uint8korr(ptr);ptr+= 8;
state->process= mi_uint4korr(ptr); ptr+= 4;
state->unique = mi_uint4korr(ptr); ptr+= 4;
state->status = mi_uint4korr(ptr); ptr+= 4;
state->update_count=mi_uint4korr(ptr); ptr+= 4;
ptr+= state->state_diff_length;
for (i=0; i < keys; i++)
{
state->key_root[i]= mi_sizekorr(ptr); ptr+= 8;
}
state->key_del= mi_sizekorr(ptr); ptr+= 8;
state->sec_index_changed = mi_uint4korr(ptr); ptr+= 4;
state->sec_index_used = mi_uint4korr(ptr); ptr+= 4;
state->version = mi_uint4korr(ptr); ptr+= 4;
state->key_map = mi_uint8korr(ptr); ptr+= 8;
state->create_time = (time_t) mi_sizekorr(ptr); ptr+= 8;
state->recover_time =(time_t) mi_sizekorr(ptr); ptr+= 8;
state->check_time = (time_t) mi_sizekorr(ptr); ptr+= 8;
state->rec_per_key_rows=mi_sizekorr(ptr); ptr+= 8;
for (i=0 ; i < key_parts ; i++)
{
state->rec_per_key_part[i]= mi_uint4korr(ptr); ptr+=4;
}
return ptr;
}
/**
@brief Fills the state by reading its copy on disk.
@note Does nothing in single user mode.
@param file file to read from
@param state state which will be filled
@param pRead if true, use my_pread(), otherwise my_read()
*/
uint _ma_state_info_read_dsk(File file, MARIA_STATE_INFO *state, my_bool pRead)
{
char buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
if (!maria_single_user)
{
if (pRead)
{
if (my_pread(file, buff, state->state_length,0L, MYF(MY_NABP)))
return 1;
}
else if (my_read(file, buff, state->state_length,MYF(MY_NABP)))
return 1;
_ma_state_info_read(buff, state);
}
return 0;
}
/****************************************************************************
** store and read of MARIA_BASE_INFO
****************************************************************************/
uint _ma_base_info_write(File file, MARIA_BASE_INFO *base)
{
uchar buff[MARIA_BASE_INFO_SIZE], *ptr=buff;
mi_sizestore(ptr,base->keystart); ptr+= 8;
mi_sizestore(ptr,base->max_data_file_length); ptr+= 8;
mi_sizestore(ptr,base->max_key_file_length); ptr+= 8;
mi_rowstore(ptr,base->records); ptr+= 8;
mi_rowstore(ptr,base->reloc); ptr+= 8;
mi_int4store(ptr,base->mean_row_length); ptr+= 4;
mi_int4store(ptr,base->reclength); ptr+= 4;
mi_int4store(ptr,base->pack_reclength); ptr+= 4;
mi_int4store(ptr,base->min_pack_length); ptr+= 4;
mi_int4store(ptr,base->max_pack_length); ptr+= 4;
mi_int4store(ptr,base->min_block_length); ptr+= 4;
mi_int2store(ptr,base->fields); ptr+= 2;
mi_int2store(ptr,base->fixed_not_null_fields); ptr+= 2;
mi_int2store(ptr,base->fixed_not_null_fields_length); ptr+= 2;
mi_int2store(ptr,base->max_field_lengths); ptr+= 2;
mi_int2store(ptr,base->pack_fields); ptr+= 2;
mi_int2store(ptr,0); ptr+= 2;
mi_int2store(ptr,base->null_bytes); ptr+= 2;
mi_int2store(ptr,base->original_null_bytes); ptr+= 2;
mi_int2store(ptr,base->field_offsets); ptr+= 2;
mi_int2store(ptr,base->min_row_length); ptr+= 2;
mi_int2store(ptr,base->block_size); ptr+= 2;
*ptr++= base->rec_reflength;
*ptr++= base->key_reflength;
*ptr++= base->keys;
*ptr++= base->auto_key;
*ptr++= base->born_transactional;
*ptr++= 0; /* Reserved */
mi_int2store(ptr,base->pack_bytes); ptr+= 2;
mi_int2store(ptr,base->blobs); ptr+= 2;
mi_int2store(ptr,base->max_key_block_length); ptr+= 2;
mi_int2store(ptr,base->max_key_length); ptr+= 2;
mi_int2store(ptr,base->extra_alloc_bytes); ptr+= 2;
*ptr++= base->extra_alloc_procent;
bzero(ptr,16); ptr+= 16; /* extra */
DBUG_ASSERT((ptr - buff) == MARIA_BASE_INFO_SIZE);
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
static uchar *_ma_base_info_read(uchar *ptr, MARIA_BASE_INFO *base)
{
base->keystart= mi_sizekorr(ptr); ptr+= 8;
base->max_data_file_length= mi_sizekorr(ptr); ptr+= 8;
base->max_key_file_length= mi_sizekorr(ptr); ptr+= 8;
base->records= (ha_rows) mi_sizekorr(ptr); ptr+= 8;
base->reloc= (ha_rows) mi_sizekorr(ptr); ptr+= 8;
base->mean_row_length= mi_uint4korr(ptr); ptr+= 4;
base->reclength= mi_uint4korr(ptr); ptr+= 4;
base->pack_reclength= mi_uint4korr(ptr); ptr+= 4;
base->min_pack_length= mi_uint4korr(ptr); ptr+= 4;
base->max_pack_length= mi_uint4korr(ptr); ptr+= 4;
base->min_block_length= mi_uint4korr(ptr); ptr+= 4;
base->fields= mi_uint2korr(ptr); ptr+= 2;
base->fixed_not_null_fields= mi_uint2korr(ptr); ptr+= 2;
base->fixed_not_null_fields_length= mi_uint2korr(ptr);ptr+= 2;
base->max_field_lengths= mi_uint2korr(ptr); ptr+= 2;
base->pack_fields= mi_uint2korr(ptr); ptr+= 2;
ptr+= 2;
base->null_bytes= mi_uint2korr(ptr); ptr+= 2;
base->original_null_bytes= mi_uint2korr(ptr); ptr+= 2;
base->field_offsets= mi_uint2korr(ptr); ptr+= 2;
base->min_row_length= mi_uint2korr(ptr); ptr+= 2;
base->block_size= mi_uint2korr(ptr); ptr+= 2;
base->rec_reflength= *ptr++;
base->key_reflength= *ptr++;
base->keys= *ptr++;
base->auto_key= *ptr++;
base->born_transactional= *ptr++;
ptr++;
base->pack_bytes= mi_uint2korr(ptr); ptr+= 2;
base->blobs= mi_uint2korr(ptr); ptr+= 2;
base->max_key_block_length= mi_uint2korr(ptr); ptr+= 2;
base->max_key_length= mi_uint2korr(ptr); ptr+= 2;
base->extra_alloc_bytes= mi_uint2korr(ptr); ptr+= 2;
base->extra_alloc_procent= *ptr++;
ptr+= 16;
return ptr;
}
/*--------------------------------------------------------------------------
maria_keydef
---------------------------------------------------------------------------*/
uint _ma_keydef_write(File file, MARIA_KEYDEF *keydef)
{
uchar buff[MARIA_KEYDEF_SIZE];
uchar *ptr=buff;
*ptr++= (uchar) keydef->keysegs;
*ptr++= keydef->key_alg; /* Rtree or Btree */
mi_int2store(ptr,keydef->flag); ptr+= 2;
mi_int2store(ptr,keydef->block_length); ptr+= 2;
mi_int2store(ptr,keydef->keylength); ptr+= 2;
mi_int2store(ptr,keydef->minlength); ptr+= 2;
mi_int2store(ptr,keydef->maxlength); ptr+= 2;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *_ma_keydef_read(char *ptr, MARIA_KEYDEF *keydef)
{
keydef->keysegs = (uint) *ptr++;
keydef->key_alg = *ptr++; /* Rtree or Btree */
keydef->flag = mi_uint2korr(ptr); ptr+= 2;
keydef->block_length = mi_uint2korr(ptr); ptr+= 2;
keydef->keylength = mi_uint2korr(ptr); ptr+= 2;
keydef->minlength = mi_uint2korr(ptr); ptr+= 2;
keydef->maxlength = mi_uint2korr(ptr); ptr+= 2;
keydef->underflow_block_length=keydef->block_length/3;
keydef->version = 0; /* Not saved */
keydef->parser = &ft_default_parser;
keydef->ftparser_nr = 0;
return ptr;
}
/***************************************************************************
** maria_keyseg
***************************************************************************/
int _ma_keyseg_write(File file, const HA_KEYSEG *keyseg)
{
uchar buff[HA_KEYSEG_SIZE];
uchar *ptr=buff;
ulong pos;
*ptr++= keyseg->type;
*ptr++= keyseg->language;
*ptr++= keyseg->null_bit;
*ptr++= keyseg->bit_start;
*ptr++= keyseg->bit_end;
*ptr++= keyseg->bit_length;
mi_int2store(ptr,keyseg->flag); ptr+= 2;
mi_int2store(ptr,keyseg->length); ptr+= 2;
mi_int4store(ptr,keyseg->start); ptr+= 4;
pos= keyseg->null_bit ? keyseg->null_pos : keyseg->bit_pos;
mi_int4store(ptr, pos);
ptr+=4;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *_ma_keyseg_read(char *ptr, HA_KEYSEG *keyseg)
{
keyseg->type = *ptr++;
keyseg->language = *ptr++;
keyseg->null_bit = *ptr++;
keyseg->bit_start = *ptr++;
keyseg->bit_end = *ptr++;
keyseg->bit_length = *ptr++;
keyseg->flag = mi_uint2korr(ptr); ptr+= 2;
keyseg->length = mi_uint2korr(ptr); ptr+= 2;
keyseg->start = mi_uint4korr(ptr); ptr+= 4;
keyseg->null_pos = mi_uint4korr(ptr); ptr+= 4;
keyseg->charset=0; /* Will be filled in later */
if (keyseg->null_bit)
keyseg->bit_pos= (uint16)(keyseg->null_pos + (keyseg->null_bit == 7));
else
{
keyseg->bit_pos= (uint16)keyseg->null_pos;
keyseg->null_pos= 0;
}
return ptr;
}
/*--------------------------------------------------------------------------
maria_uniquedef
---------------------------------------------------------------------------*/
uint _ma_uniquedef_write(File file, MARIA_UNIQUEDEF *def)
{
uchar buff[MARIA_UNIQUEDEF_SIZE];
uchar *ptr=buff;
mi_int2store(ptr,def->keysegs); ptr+=2;
*ptr++= (uchar) def->key;
*ptr++ = (uchar) def->null_are_equal;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *_ma_uniquedef_read(char *ptr, MARIA_UNIQUEDEF *def)
{
def->keysegs = mi_uint2korr(ptr);
def->key = ptr[2];
def->null_are_equal=ptr[3];
return ptr+4; /* 1 extra uchar */
}
/***************************************************************************
** MARIA_COLUMNDEF
***************************************************************************/
uint _ma_columndef_write(File file, MARIA_COLUMNDEF *columndef)
{
uchar buff[MARIA_COLUMNDEF_SIZE];
uchar *ptr=buff;
mi_int6store(ptr,columndef->offset); ptr+= 6;
mi_int2store(ptr,columndef->type); ptr+= 2;
mi_int2store(ptr,columndef->length); ptr+= 2;
mi_int2store(ptr,columndef->fill_length); ptr+= 2;
mi_int2store(ptr,columndef->null_pos); ptr+= 2;
mi_int2store(ptr,columndef->empty_pos); ptr+= 2;
(*ptr++)= columndef->null_bit;
(*ptr++)= columndef->empty_bit;
return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
}
char *_ma_columndef_read(char *ptr, MARIA_COLUMNDEF *columndef)
{
columndef->offset= mi_uint6korr(ptr); ptr+= 6;
columndef->type= mi_sint2korr(ptr); ptr+= 2;
columndef->length= mi_uint2korr(ptr); ptr+= 2;
columndef->fill_length= mi_uint2korr(ptr); ptr+= 2;
columndef->null_pos= mi_uint2korr(ptr); ptr+= 2;
columndef->empty_pos= mi_uint2korr(ptr); ptr+= 2;
columndef->null_bit= (uint8) *ptr++;
columndef->empty_bit= (uint8) *ptr++;
return ptr;
}
/**************************************************************************
Open data file
We can't use dup() here as the data file descriptors need to have different
active seek-positions.
The argument file_to_dup is here for the future if there would on some OS
exist a dup()-like call that would give us two different file descriptors.
*************************************************************************/
int _ma_open_datafile(MARIA_HA *info, MARIA_SHARE *share,
File file_to_dup __attribute__((unused)))
{
info->dfile.file= share->bitmap.file.file=
my_open(share->data_file_name, share->mode | O_SHARE,
MYF(MY_WME));
return info->dfile.file >= 0 ? 0 : 1;
}
int _ma_open_keyfile(MARIA_SHARE *share)
{
if ((share->kfile.file= my_open(share->unique_file_name,
share->mode | O_SHARE,
MYF(MY_WME))) < 0)
return 1;
return 0;
}
/*
Disable all indexes.
SYNOPSIS
maria_disable_indexes()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Disable all indexes.
RETURN
0 ok
*/
int maria_disable_indexes(MARIA_HA *info)
{
MARIA_SHARE *share= info->s;
maria_clear_all_keys_active(share->state.key_map);
return 0;
}
/*
Enable all indexes
SYNOPSIS
maria_enable_indexes()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Enable all indexes. The indexes might have been disabled
by maria_disable_index() before.
The function works only if both data and indexes are empty,
otherwise a repair is required.
To be sure, call handler::delete_all_rows() before.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty.
*/
int maria_enable_indexes(MARIA_HA *info)
{
int error= 0;
MARIA_SHARE *share= info->s;
if (share->state.state.data_file_length ||
(share->state.state.key_file_length != share->base.keystart))
{
maria_print_error(info->s, HA_ERR_CRASHED);
error= HA_ERR_CRASHED;
}
else
maria_set_all_keys_active(share->state.key_map, share->base.keys);
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
maria_indexes_are_disabled()
info A pointer to the MARIA storage engine MARIA_HA struct.
DESCRIPTION
Test if indexes are disabled.
RETURN
0 indexes are not disabled
1 all indexes are disabled
2 non-unique indexes are disabled
*/
int maria_indexes_are_disabled(MARIA_HA *info)
{
MARIA_SHARE *share= info->s;
/*
No keys or all are enabled. keys is the number of keys. Left shifted
gives us only one bit set. When decreased by one, gives us all all bits
up to this one set and it gets unset.
*/
if (!share->base.keys ||
(maria_is_all_keys_active(share->state.key_map, share->base.keys)))
return 0;
/* All are disabled */
if (maria_is_any_key_active(share->state.key_map))
return 1;
/*
We have keys. Some enabled, some disabled.
Don't check for any non-unique disabled but return directly 2
*/
return 2;
}
static my_bool maria_scan_init_dummy(MARIA_HA *info __attribute__((unused)))
{
return 0;
}
static void maria_scan_end_dummy(MARIA_HA *info __attribute__((unused)))
{
}
static my_bool maria_once_init_dummy(MARIA_SHARE *share
__attribute__((unused)),
File dfile __attribute__((unused)))
{
return 0;
}
static my_bool maria_once_end_dummy(MARIA_SHARE *share __attribute__((unused)))
{
return 0;
}
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