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mariadb/storage/maria/ma_open.c
unknown 42cde8a7b2 rec_lsn (first REDO LSN( is now given to the page cache on unpinning 
Added maria_clone(), needed by future REPAIR code


storage/maria/unittest/ma_pagecache_consist.c:
  Change mode to -rw-rw-r--
storage/maria/unittest/lockman-t.c:
  Change mode to -rw-rw-r--
storage/maria/unittest/lockman1-t.c:
  Change mode to -rw-rw-r--
storage/maria/unittest/lockman2-t.c:
  Change mode to -rw-rw-r--
storage/maria/unittest/trnman-t.c:
  Change mode to -rw-rw-r--
include/maria.h:
  Added prototype for maria_clone (for future)
storage/maria/ha_maria.cc:
  Move filename to share structure
storage/maria/ma_blockrec.c:
  rec_lsn (first REDO LSN( is now given to the page cache on unpinning
  Removed impossible lock handling in get_head_or_tail_page()
  Changed calls ot translog_write_record() to remember rec_lsn
  Removed some logging in csse of not transactions
storage/maria/ma_delete.c:
  info->filename -> info->s->open_file_name
storage/maria/ma_loghandler.c:
  Indentation fixes
storage/maria/ma_open.c:
  Added maria_clone(), needed by future REPAIR code
storage/maria/ma_packrec.c:
  Fixed typo in comment
storage/maria/ma_pagecache.c:
  Added comment.
  Allow setting REC_LSN in case of read lock
storage/maria/ma_update.c:
  info->filename -> info->s->open_file_name
storage/maria/ma_write.c:
  info->filename -> info->s->open_file_name
storage/maria/maria_def.h:
  info->filename -> info->s->open_file_name
  Added have_rtree to simplify test in ma_clone()
storage/maria/maria_ftdump.c:
  info->filename -> info->s->open_file_name
storage/maria/maria_pack.c:
  info->filename -> info->s->open_file_name
storage/maria/trnman.h:
  Added rec_lsn
2007-06-07 01:01:43 +03:00

1436 lines
46 KiB
C
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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 byte *_ma_base_info_read(byte *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((byte*) &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 */
info.trn= &dummy_transaction_object;
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((gptr) 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((byte*) &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);
if (!(old_info=_ma_test_if_reopen(name_buff)))
{
share= &share_buff;
bzero((gptr) &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((byte*) share->state.header.file_version,
(byte*) 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 (share->base.transactional)
share->base_length+= TRANS_ROW_EXTRA_HEADER_SIZE;
share->base.default_rec_buff_size= max(share->base.pack_reclength,
share->base.max_key_length);
share->page_type= (share->base.transactional ? PAGECACHE_LSN_PAGE :
PAGECACHE_PLAIN_PAGE);
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((gptr) disk_cache);
_ma_setup_functions(share);
if ((*share->once_init)(share, info.dfile.file))
goto err;
if (open_flags & HA_OPEN_MMAP)
{
info.s= share;
if (_ma_dynmap_file(&info, share->state.state.data_file_length))
{
/* purecov: begin inspected */
/* Ignore if mmap fails. Use file I/O instead. */
DBUG_PRINT("warning", ("mmap failed: errno: %d", errno));
/* purecov: end */
}
else
{
share->file_read= _ma_mmap_pread;
share->file_write= _ma_mmap_pwrite;
}
}
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;
share->lock.update_status=_ma_update_status;
share->lock.restore_status=_ma_restore_status;
share->lock.check_status=_ma_check_status;
}
}
#endif
}
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((gptr) share,MYF(0));
/* fall through */
case 3:
/* fall through */
case 2:
my_afree((gptr) 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(byte **old_addr, my_size_t *old_size,
my_size_t new_size)
{
if (*old_size < new_size)
{
byte *addr;
if (!(addr= (byte*) my_realloc((gptr) *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;
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;
}
/*
Function to save and store the header in the index file (.MYI)
*/
uint _ma_state_info_write(File file, MARIA_STATE_INFO *state, uint pWrite)
{
uchar buff[MARIA_STATE_INFO_SIZE + MARIA_STATE_EXTRA_SIZE];
uchar *ptr=buff;
uint i, keys= (uint) state->header.keys;
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;
*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;
}
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;
}
}
if (pWrite & 1)
DBUG_RETURN(my_pwrite(file,(char*) buff, (uint) (ptr-buff), 0L,
MYF(MY_NABP | MY_THREADSAFE)));
DBUG_RETURN(my_write(file, (char*) buff, (uint) (ptr-buff),
MYF(MY_NABP)));
}
byte *_ma_state_info_read(byte *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->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;
}
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 (MY_FILE_ERROR);
}
else if (my_read(file, buff, state->state_length,MYF(MY_NABP)))
return (MY_FILE_ERROR);
_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->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,(char*) buff, (uint) (ptr-buff), MYF(MY_NABP));
}
static byte *_ma_base_info_read(byte *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->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,(char*) buff, (uint) (ptr-buff), MYF(MY_NABP));
}
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,(char*) buff, (uint) (ptr-buff), MYF(MY_NABP));
}
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,(char*) buff, (uint) (ptr-buff), MYF(MY_NABP));
}
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 byte */
}
/***************************************************************************
** 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,(char*) buff, (uint) (ptr-buff), MYF(MY_NABP));
}
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= 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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