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|
/* Copyright (C) 2000-2006 MySQL 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 */
/* Create a MyISAM table */
#include "myisam_priv.h"
#include "drizzled/internal/my_bit.h"
#include "drizzled/internal/my_sys.h"
#include "drizzled/util/test.h"
#include "drizzled/global_charset_info.h"
#include "drizzled/error.h"
#include <cassert>
#include <algorithm>
using namespace std;
using namespace drizzled;
/*
Old options is used when recreating database, from myisamchk
*/
int mi_create(const char *name,uint32_t keys,MI_KEYDEF *keydefs,
uint32_t columns, MI_COLUMNDEF *recinfo,
uint32_t uniques, MI_UNIQUEDEF *uniquedefs,
MI_CREATE_INFO *ci,uint32_t flags)
{
register uint32_t i, j;
int dfile= 0, file= 0;
int errpos,save_errno, create_mode= O_RDWR | O_TRUNC;
myf create_flag;
uint32_t fields,length,max_key_length,packed,pointer,real_length_diff,
key_length,info_length,key_segs,options,min_key_length_skip,
base_pos,long_varchar_count,varchar_length,
max_key_block_length,unique_key_parts,fulltext_keys,offset;
uint32_t aligned_key_start, block_length;
ulong reclength, real_reclength,min_pack_length;
char filename[FN_REFLEN],linkname[FN_REFLEN], *linkname_ptr;
ulong pack_reclength;
uint64_t tot_length,max_rows, tmp;
enum en_fieldtype type;
MYISAM_SHARE share;
MI_KEYDEF *keydef,tmp_keydef;
MI_UNIQUEDEF *uniquedef;
HA_KEYSEG *keyseg,tmp_keyseg;
MI_COLUMNDEF *rec;
ulong *rec_per_key_part;
internal::my_off_t key_root[HA_MAX_POSSIBLE_KEY],key_del[MI_MAX_KEY_BLOCK_SIZE];
MI_CREATE_INFO tmp_create_info;
if (!ci)
{
memset(&tmp_create_info, 0, sizeof(tmp_create_info));
ci=&tmp_create_info;
}
if (keys + uniques > MI_MAX_KEY || columns == 0)
{
return(errno=HA_WRONG_CREATE_OPTION);
}
errpos= 0;
options= 0;
memset(&share, 0, sizeof(share));
if (flags & HA_DONT_TOUCH_DATA)
{
if (!(ci->old_options & HA_OPTION_TEMP_COMPRESS_RECORD))
options=ci->old_options &
(HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD |
HA_OPTION_READ_ONLY_DATA |
HA_OPTION_TMP_TABLE );
else
options=ci->old_options &
(HA_OPTION_TMP_TABLE );
}
if (ci->reloc_rows > ci->max_rows)
ci->reloc_rows=ci->max_rows; /* Check if wrong parameter */
if (!(rec_per_key_part=
(ulong*) malloc((keys + uniques)*MI_MAX_KEY_SEG*sizeof(long))))
return(errno);
memset(rec_per_key_part, 0, (keys + uniques)*MI_MAX_KEY_SEG*sizeof(long));
/* Start by checking fields and field-types used */
reclength=varchar_length=long_varchar_count=packed=
min_pack_length=pack_reclength=0;
for (rec=recinfo, fields=0 ;
fields != columns ;
rec++,fields++)
{
reclength+=rec->length;
if ((type=(enum en_fieldtype) rec->type) != FIELD_NORMAL &&
type != FIELD_CHECK)
{
packed++;
if (type == FIELD_BLOB)
{
share.base.blobs++;
if (pack_reclength != INT32_MAX)
{
if (rec->length == 4+portable_sizeof_char_ptr)
pack_reclength= INT32_MAX;
else
pack_reclength+=(1 << ((rec->length-portable_sizeof_char_ptr)*8)); /* Max blob length */
}
}
else if (type == FIELD_SKIP_PRESPACE ||
type == FIELD_SKIP_ENDSPACE)
{
if (pack_reclength != INT32_MAX)
pack_reclength+= rec->length > 255 ? 2 : 1;
min_pack_length++;
}
else if (type == FIELD_VARCHAR)
{
varchar_length+= rec->length-1; /* Used for min_pack_length */
packed--;
pack_reclength++;
min_pack_length++;
/* We must test for 257 as length includes pack-length */
if (test(rec->length >= 257))
{
long_varchar_count++;
pack_reclength+= 2; /* May be packed on 3 bytes */
}
}
else if (type != FIELD_SKIP_ZERO)
{
min_pack_length+=rec->length;
packed--; /* Not a pack record type */
}
}
else /* FIELD_NORMAL */
min_pack_length+=rec->length;
}
if ((packed & 7) == 1)
{ /* Bad packing, try to remove a zero-field */
while (rec != recinfo)
{
rec--;
if (rec->type == (int) FIELD_SKIP_ZERO && rec->length == 1)
{
/*
NOTE1: here we change a field type FIELD_SKIP_ZERO ->
FIELD_NORMAL
*/
rec->type=(int) FIELD_NORMAL;
packed--;
min_pack_length++;
break;
}
}
}
if (packed || (flags & HA_PACK_RECORD))
options|=HA_OPTION_PACK_RECORD; /* Must use packed records */
if (!(options & (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)))
min_pack_length+= varchar_length;
if (flags & HA_CREATE_TMP_TABLE)
{
options|= HA_OPTION_TMP_TABLE;
create_mode|= O_EXCL;
}
packed=(packed+7)/8;
if (pack_reclength != INT32_MAX)
pack_reclength+= reclength+packed +
test(test_all_bits(options,
uint32_t(HA_PACK_RECORD)));
min_pack_length+=packed;
if (!ci->data_file_length && ci->max_rows)
{
if (pack_reclength == INT32_MAX ||
(~(uint64_t) 0)/ci->max_rows < (uint64_t) pack_reclength)
ci->data_file_length= ~(uint64_t) 0;
else
ci->data_file_length=(uint64_t) ci->max_rows*pack_reclength;
}
else if (!ci->max_rows)
ci->max_rows=(ha_rows) (ci->data_file_length/(min_pack_length +
((options & HA_OPTION_PACK_RECORD) ?
3 : 0)));
if (options & (HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD))
pointer=mi_get_pointer_length(ci->data_file_length, data_pointer_size);
else
pointer=mi_get_pointer_length(ci->max_rows, data_pointer_size);
if (!(max_rows=(uint64_t) ci->max_rows))
max_rows= ((((uint64_t) 1 << (pointer*8)) -1) / min_pack_length);
real_reclength=reclength;
if (!(options & (HA_OPTION_COMPRESS_RECORD | HA_OPTION_PACK_RECORD)))
{
if (reclength <= pointer)
reclength=pointer+1; /* reserve place for delete link */
}
else
reclength+= long_varchar_count; /* We need space for varchar! */
max_key_length=0; tot_length=0 ; key_segs=0;
fulltext_keys=0;
max_key_block_length=0;
share.state.rec_per_key_part=rec_per_key_part;
share.state.key_root=key_root;
share.state.key_del=key_del;
if (uniques)
{
max_key_block_length= myisam_block_size;
max_key_length= MI_UNIQUE_HASH_LENGTH + pointer;
}
for (i=0, keydef=keydefs ; i < keys ; i++ , keydef++)
{
share.state.key_root[i]= HA_OFFSET_ERROR;
min_key_length_skip=length=real_length_diff=0;
key_length=pointer;
{
/* Test if prefix compression */
if (keydef->flag & HA_PACK_KEY)
{
/* Only use HA_PACK_KEY when first segment is a variable length key */
if (!(keydef->seg[0].flag & (HA_SPACE_PACK | HA_BLOB_PART |
HA_VAR_LENGTH_PART)))
{
/* pack relative to previous key */
keydef->flag&= ~HA_PACK_KEY;
keydef->flag|= HA_BINARY_PACK_KEY | HA_VAR_LENGTH_KEY;
}
else
{
keydef->seg[0].flag|=HA_PACK_KEY; /* for easyer intern test */
keydef->flag|=HA_VAR_LENGTH_KEY;
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
}
}
if (keydef->flag & HA_BINARY_PACK_KEY)
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
if (keydef->flag & HA_AUTO_KEY && ci->with_auto_increment)
share.base.auto_key=i+1;
for (j=0, keyseg=keydef->seg ; j < keydef->keysegs ; j++, keyseg++)
{
/* numbers are stored with high by first to make compression easier */
switch (keyseg->type) {
case HA_KEYTYPE_LONG_INT:
case HA_KEYTYPE_DOUBLE:
case HA_KEYTYPE_ULONG_INT:
case HA_KEYTYPE_LONGLONG:
case HA_KEYTYPE_ULONGLONG:
case HA_KEYTYPE_UINT24:
keyseg->flag|= HA_SWAP_KEY;
break;
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
if (!(keyseg->flag & HA_BLOB_PART))
{
/* Make a flag that this is a VARCHAR */
keyseg->flag|= HA_VAR_LENGTH_PART;
/* Store in bit_start number of bytes used to pack the length */
keyseg->bit_start= ((keyseg->type == HA_KEYTYPE_VARTEXT1 ||
keyseg->type == HA_KEYTYPE_VARBINARY1) ?
1 : 2);
}
break;
default:
break;
}
if (keyseg->flag & HA_SPACE_PACK)
{
assert(!(keyseg->flag & HA_VAR_LENGTH_PART));
keydef->flag |= HA_SPACE_PACK_USED | HA_VAR_LENGTH_KEY;
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
length++; /* At least one length byte */
min_key_length_skip+=keyseg->length;
if (keyseg->length >= 255)
{ /* prefix may be 3 bytes */
min_key_length_skip+=2;
length+=2;
}
}
if (keyseg->flag & (HA_VAR_LENGTH_PART | HA_BLOB_PART))
{
assert(!test_all_bits(keyseg->flag,
(HA_VAR_LENGTH_PART | HA_BLOB_PART)));
keydef->flag|=HA_VAR_LENGTH_KEY;
length++; /* At least one length byte */
options|=HA_OPTION_PACK_KEYS; /* Using packed keys */
min_key_length_skip+=keyseg->length;
if (keyseg->length >= 255)
{ /* prefix may be 3 bytes */
min_key_length_skip+=2;
length+=2;
}
}
key_length+= keyseg->length;
if (keyseg->null_bit)
{
key_length++;
options|=HA_OPTION_PACK_KEYS;
keyseg->flag|=HA_NULL_PART;
keydef->flag|=HA_VAR_LENGTH_KEY | HA_NULL_PART_KEY;
}
}
} /* if HA_FULLTEXT */
key_segs+=keydef->keysegs;
if (keydef->keysegs > MI_MAX_KEY_SEG)
{
errno=HA_WRONG_CREATE_OPTION;
goto err;
}
/*
key_segs may be 0 in the case when we only want to be able to
add on row into the table. This can happen with some DISTINCT queries
in MySQL
*/
if ((keydef->flag & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME &&
key_segs)
share.state.rec_per_key_part[key_segs-1]=1L;
length+=key_length;
/* Get block length for key, if defined by user */
block_length= (keydef->block_length ?
my_round_up_to_next_power(keydef->block_length) :
myisam_block_size);
block_length= max(block_length, (uint32_t)MI_MIN_KEY_BLOCK_LENGTH);
block_length= min(block_length, (uint32_t)MI_MAX_KEY_BLOCK_LENGTH);
keydef->block_length= (uint16_t) MI_BLOCK_SIZE(length-real_length_diff,
pointer,MI_MAX_KEYPTR_SIZE,
block_length);
if (keydef->block_length > MI_MAX_KEY_BLOCK_LENGTH ||
length >= MI_MAX_KEY_BUFF)
{
errno=HA_WRONG_CREATE_OPTION;
goto err;
}
set_if_bigger(max_key_block_length,(uint32_t)keydef->block_length);
keydef->keylength= (uint16_t) key_length;
keydef->minlength= (uint16_t) (length-min_key_length_skip);
keydef->maxlength= (uint16_t) length;
if (length > max_key_length)
max_key_length= length;
tot_length+= (max_rows/(ulong) (((uint) keydef->block_length-5)/
(length*2)))*
(ulong) keydef->block_length;
}
for (i=max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH ; i-- ; )
key_del[i]=HA_OFFSET_ERROR;
unique_key_parts=0;
offset=reclength-uniques*MI_UNIQUE_HASH_LENGTH;
for (i=0, uniquedef=uniquedefs ; i < uniques ; i++ , uniquedef++)
{
uniquedef->key=keys+i;
unique_key_parts+=uniquedef->keysegs;
share.state.key_root[keys+i]= HA_OFFSET_ERROR;
tot_length+= (max_rows/(ulong) (((uint) myisam_block_size-5)/
((MI_UNIQUE_HASH_LENGTH + pointer)*2)))*
(ulong) myisam_block_size;
}
keys+=uniques; /* Each unique has 1 key */
key_segs+=uniques; /* Each unique has 1 key seg */
base_pos=(MI_STATE_INFO_SIZE + keys * MI_STATE_KEY_SIZE +
max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH*
MI_STATE_KEYBLOCK_SIZE+
key_segs*MI_STATE_KEYSEG_SIZE);
info_length=base_pos+(uint) (MI_BASE_INFO_SIZE+
keys * MI_KEYDEF_SIZE+
uniques * MI_UNIQUEDEF_SIZE +
(key_segs + unique_key_parts)*HA_KEYSEG_SIZE+
columns*MI_COLUMNDEF_SIZE);
/* There are only 16 bits for the total header length. */
if (info_length > 65535)
{
my_printf_error(0, "MyISAM table '%s' has too many columns and/or "
"indexes and/or unique constraints.",
MYF(0), name + internal::dirname_length(name));
errno= HA_WRONG_CREATE_OPTION;
goto err;
}
memmove(share.state.header.file_version,myisam_file_magic,4);
ci->old_options=options| (ci->old_options & HA_OPTION_TEMP_COMPRESS_RECORD ?
HA_OPTION_COMPRESS_RECORD |
HA_OPTION_TEMP_COMPRESS_RECORD: 0);
mi_int2store(share.state.header.options,ci->old_options);
mi_int2store(share.state.header.header_length,info_length);
mi_int2store(share.state.header.state_info_length,MI_STATE_INFO_SIZE);
mi_int2store(share.state.header.base_info_length,MI_BASE_INFO_SIZE);
mi_int2store(share.state.header.base_pos,base_pos);
share.state.header.language= (ci->language ?
ci->language : default_charset_info->number);
share.state.header.max_block_size_index= max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH;
share.state.dellink = HA_OFFSET_ERROR;
share.state.process= (ulong) getpid();
share.state.unique= (ulong) 0;
share.state.update_count=(ulong) 0;
share.state.version= (ulong) time((time_t*) 0);
share.state.sortkey= UINT16_MAX;
share.state.auto_increment=ci->auto_increment;
share.options=options;
share.base.rec_reflength=pointer;
/* Get estimate for index file length (this may be wrong for FT keys) */
tmp= (tot_length + max_key_block_length * keys *
MI_INDEX_BLOCK_MARGIN) / MI_MIN_KEY_BLOCK_LENGTH;
/*
use maximum of key_file_length we calculated and key_file_length value we
got from MYI file header (see also myisampack.c:save_state)
*/
share.base.key_reflength=
mi_get_pointer_length(max(ci->key_file_length,tmp),3);
share.base.keys= share.state.header.keys= keys;
share.state.header.uniques= uniques;
share.state.header.fulltext_keys= fulltext_keys;
mi_int2store(share.state.header.key_parts,key_segs);
mi_int2store(share.state.header.unique_key_parts,unique_key_parts);
mi_set_all_keys_active(share.state.key_map, keys);
aligned_key_start= my_round_up_to_next_power(max_key_block_length ?
max_key_block_length :
myisam_block_size);
share.base.keystart= share.state.state.key_file_length=
MY_ALIGN(info_length, aligned_key_start);
share.base.max_key_block_length=max_key_block_length;
share.base.max_key_length=ALIGN_SIZE(max_key_length+4);
share.base.records=ci->max_rows;
share.base.reloc= ci->reloc_rows;
share.base.reclength=real_reclength;
share.base.pack_reclength=reclength;
share.base.max_pack_length=pack_reclength;
share.base.min_pack_length=min_pack_length;
share.base.pack_bits=packed;
share.base.fields=fields;
share.base.pack_fields=packed;
/* max_data_file_length and max_key_file_length are recalculated on open */
if (options & HA_OPTION_TMP_TABLE)
share.base.max_data_file_length=(internal::my_off_t) ci->data_file_length;
share.base.min_block_length=
(share.base.pack_reclength+3 < MI_EXTEND_BLOCK_LENGTH &&
! share.base.blobs) ?
max(share.base.pack_reclength,(ulong)MI_MIN_BLOCK_LENGTH) :
MI_EXTEND_BLOCK_LENGTH;
if (! (flags & HA_DONT_TOUCH_DATA))
share.state.create_time= (long) time((time_t*) 0);
pthread_mutex_lock(&THR_LOCK_myisam);
/*
NOTE: For test_if_reopen() we need a real path name. Hence we need
MY_RETURN_REAL_PATH for every internal::fn_format(filename, ...).
*/
if (ci->index_file_name)
{
char *iext= strrchr((char *)ci->index_file_name, '.');
int have_iext= iext && !strcmp(iext, MI_NAME_IEXT);
if (options & HA_OPTION_TMP_TABLE)
{
char *path;
/* chop off the table name, tempory tables use generated name */
if ((path= strrchr((char *)ci->index_file_name, FN_LIBCHAR)))
*path= '\0';
internal::fn_format(filename, name, ci->index_file_name, MI_NAME_IEXT,
MY_REPLACE_DIR | MY_UNPACK_FILENAME |
MY_RETURN_REAL_PATH | MY_APPEND_EXT);
}
else
{
internal::fn_format(filename, ci->index_file_name, "", MI_NAME_IEXT,
MY_UNPACK_FILENAME | MY_RETURN_REAL_PATH |
(have_iext ? MY_REPLACE_EXT : MY_APPEND_EXT));
}
internal::fn_format(linkname, name, "", MI_NAME_IEXT,
MY_UNPACK_FILENAME|MY_APPEND_EXT);
linkname_ptr=linkname;
/*
Don't create the table if the link or file exists to ensure that one
doesn't accidently destroy another table.
*/
create_flag=0;
}
else
{
char *iext= strrchr((char *)name, '.');
int have_iext= iext && !strcmp(iext, MI_NAME_IEXT);
internal::fn_format(filename, name, "", MI_NAME_IEXT,
MY_UNPACK_FILENAME | MY_RETURN_REAL_PATH |
(have_iext ? MY_REPLACE_EXT : MY_APPEND_EXT));
linkname_ptr=0;
/* Replace the current file */
create_flag=(flags & HA_CREATE_KEEP_FILES) ? 0 : MY_DELETE_OLD;
}
/*
If a MRG_MyISAM table is in use, the mapped MyISAM tables are open,
but no entry is made in the table cache for them.
A TRUNCATE command checks for the table in the cache only and could
be fooled to believe, the table is not open.
Pull the emergency brake in this situation. (Bug #8306)
NOTE: The filename is compared against unique_file_name of every
open table. Hence we need a real path here.
*/
if (test_if_reopen(filename))
{
my_printf_error(0, "MyISAM table '%s' is in use "
"(most likely by a MERGE table). Try FLUSH TABLES.",
MYF(0), name + internal::dirname_length(name));
errno= HA_ERR_TABLE_EXIST;
goto err;
}
if ((file= internal::my_create_with_symlink(linkname_ptr,
filename,
0,
create_mode,
MYF(MY_WME | create_flag))) < 0)
goto err;
errpos=1;
if (!(flags & HA_DONT_TOUCH_DATA))
{
{
if (ci->data_file_name)
{
char *dext= strrchr((char *)ci->data_file_name, '.');
int have_dext= dext && !strcmp(dext, MI_NAME_DEXT);
if (options & HA_OPTION_TMP_TABLE)
{
char *path;
/* chop off the table name, tempory tables use generated name */
if ((path= strrchr((char *)ci->data_file_name, FN_LIBCHAR)))
*path= '\0';
internal::fn_format(filename, name, ci->data_file_name, MI_NAME_DEXT,
MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_APPEND_EXT);
}
else
{
internal::fn_format(filename, ci->data_file_name, "", MI_NAME_DEXT,
MY_UNPACK_FILENAME |
(have_dext ? MY_REPLACE_EXT : MY_APPEND_EXT));
}
internal::fn_format(linkname, name, "",MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT);
linkname_ptr=linkname;
create_flag=0;
}
else
{
internal::fn_format(filename,name,"", MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT);
linkname_ptr=0;
create_flag=(flags & HA_CREATE_KEEP_FILES) ? 0 : MY_DELETE_OLD;
}
if ((dfile= internal::my_create_with_symlink(linkname_ptr,
filename, 0, create_mode,
MYF(MY_WME | create_flag))) < 0)
goto err;
}
errpos=3;
}
if (mi_state_info_write(file, &share.state, 2) ||
mi_base_info_write(file, &share.base))
goto err;
/* Write key and keyseg definitions */
for (i=0 ; i < share.base.keys - uniques; i++)
{
uint32_t sp_segs= 0;
if (mi_keydef_write(file, &keydefs[i]))
goto err;
for (j=0 ; j < keydefs[i].keysegs-sp_segs ; j++)
if (mi_keyseg_write(file, &keydefs[i].seg[j]))
goto err;
}
/* Create extra keys for unique definitions */
offset=reclength-uniques*MI_UNIQUE_HASH_LENGTH;
memset(&tmp_keydef, 0, sizeof(tmp_keydef));
memset(&tmp_keyseg, 0, sizeof(tmp_keyseg));
for (i=0; i < uniques ; i++)
{
tmp_keydef.keysegs=1;
tmp_keydef.flag= HA_UNIQUE_CHECK;
tmp_keydef.block_length= (uint16_t)myisam_block_size;
tmp_keydef.keylength= MI_UNIQUE_HASH_LENGTH + pointer;
tmp_keydef.minlength=tmp_keydef.maxlength=tmp_keydef.keylength;
tmp_keyseg.type= MI_UNIQUE_HASH_TYPE;
tmp_keyseg.length= MI_UNIQUE_HASH_LENGTH;
tmp_keyseg.start= offset;
offset+= MI_UNIQUE_HASH_LENGTH;
if (mi_keydef_write(file,&tmp_keydef) ||
mi_keyseg_write(file,(&tmp_keyseg)))
goto err;
}
/* Save unique definition */
for (i=0 ; i < share.state.header.uniques ; i++)
{
HA_KEYSEG *keyseg_end;
keyseg= uniquedefs[i].seg;
if (mi_uniquedef_write(file, &uniquedefs[i]))
goto err;
for (keyseg= uniquedefs[i].seg, keyseg_end= keyseg+ uniquedefs[i].keysegs;
keyseg < keyseg_end;
keyseg++)
{
switch (keyseg->type) {
case HA_KEYTYPE_VARTEXT1:
case HA_KEYTYPE_VARTEXT2:
case HA_KEYTYPE_VARBINARY1:
case HA_KEYTYPE_VARBINARY2:
if (!(keyseg->flag & HA_BLOB_PART))
{
keyseg->flag|= HA_VAR_LENGTH_PART;
keyseg->bit_start= ((keyseg->type == HA_KEYTYPE_VARTEXT1 ||
keyseg->type == HA_KEYTYPE_VARBINARY1) ?
1 : 2);
}
break;
default:
break;
}
if (mi_keyseg_write(file, keyseg))
goto err;
}
}
for (i=0 ; i < share.base.fields ; i++)
if (mi_recinfo_write(file, &recinfo[i]))
goto err;
/* Enlarge files */
if (ftruncate(file, (off_t) share.base.keystart))
goto err;
if (! (flags & HA_DONT_TOUCH_DATA))
{
#ifdef USE_RELOC
if (ftruncate(dfile,share.base.min_pack_length*ci->reloc_rows,))
goto err;
#endif
errpos=2;
if (internal::my_close(dfile,MYF(0)))
goto err;
}
errpos=0;
pthread_mutex_unlock(&THR_LOCK_myisam);
if (internal::my_close(file,MYF(0)))
goto err;
free((char*) rec_per_key_part);
return(0);
err:
pthread_mutex_unlock(&THR_LOCK_myisam);
save_errno=errno;
switch (errpos) {
case 3:
internal::my_close(dfile,MYF(0));
/* fall through */
case 2:
if (! (flags & HA_DONT_TOUCH_DATA))
internal::my_delete_with_symlink(internal::fn_format(filename,name,"",MI_NAME_DEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT),
MYF(0));
/* fall through */
case 1:
internal::my_close(file,MYF(0));
if (! (flags & HA_DONT_TOUCH_DATA))
internal::my_delete_with_symlink(internal::fn_format(filename,name,"",MI_NAME_IEXT,
MY_UNPACK_FILENAME | MY_APPEND_EXT),
MYF(0));
}
free((char*) rec_per_key_part);
return(errno=save_errno); /* return the fatal errno */
}
uint32_t mi_get_pointer_length(uint64_t file_length, uint32_t def)
{
assert(def >= 2 && def <= 7);
if (file_length) /* If not default */
{
#ifdef NOT_YET_READY_FOR_8_BYTE_POINTERS
if (file_length >= 1ULL << 56)
def=8;
else
#endif
if (file_length >= 1ULL << 48)
def=7;
else if (file_length >= 1ULL << 40)
def=6;
else if (file_length >= 1ULL << 32)
def=5;
else if (file_length >= 1ULL << 24)
def=4;
else if (file_length >= 1ULL << 16)
def=3;
else
def=2;
}
return def;
}
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