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ported bugfix for #2408 from 3.23

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(cannot call it a "merge" :)
This commit is contained in:
unknown 2004-08-22 10:22:59 +02:00
commit 24c008a5fb
1 changed files with 59 additions and 64 deletions
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123
myisammrg/myrg_open.c
View file

@ -32,30 +32,38 @@
MYRG_INFO *myrg_open(const char *name, int mode, int handle_locking)
{
int save_errno,i,errpos;
uint files,dir_length,length,key_parts;
int save_errno,errpos;
uint files,i,dir_length,length,key_parts;
ulonglong file_offset;
char name_buff[FN_REFLEN*2],buff[FN_REFLEN],*end;
MYRG_INFO info,*m_info;
MYRG_INFO *m_info;
File fd;
IO_CACHE file;
MI_INFO *isam,*last_isam;
MI_INFO *isam;
DBUG_ENTER("myrg_open");
LINT_INIT(last_isam);
LINT_INIT(m_info);
isam=0;
errpos=files=0;
bzero((gptr) &info,sizeof(info));
bzero((char*) &file,sizeof(file));
if ((fd=my_open(fn_format(name_buff,name,"",MYRG_NAME_EXT,4),
O_RDONLY | O_SHARE,MYF(0))) < 0 ||
init_io_cache(&file, fd, IO_SIZE, READ_CACHE, 0, 0,
O_RDONLY | O_SHARE,MYF(0))) < 0)
goto err;
errpos=1;
if (init_io_cache(&file, fd, 4*IO_SIZE, READ_CACHE, 0, 0,
MYF(MY_WME | MY_NABP)))
goto err;
errpos=1;
goto err;
errpos=2;
dir_length=dirname_part(name_buff,name);
info.reclength=0;
while ((length=my_b_gets(&file,buff,FN_REFLEN-1)))
{
if ((end=buff+length)[-1] == '\n')
end[-1]='\0';
if (buff[0] && buff[0] != '#')
files++;
}
my_b_seek(&file, 0);
while ((length=my_b_gets(&file,buff,FN_REFLEN-1)))
{
if ((end=buff+length)[-1] == '\n')
@ -67,7 +75,7 @@ MYRG_INFO *myrg_open(const char *name, int mode, int handle_locking)
if( !strncmp(buff+1,"INSERT_METHOD=",14))
{ /* Lookup insert method */
int tmp=find_type(buff+15,&merge_insert_method,2);
info.merge_insert_method = (uint) (tmp >= 0 ? tmp : 0);
m_info.merge_insert_method = (uint) (tmp >= 0 ? tmp : 0);
}
continue; /* Skip comments */
}
@ -80,59 +88,49 @@ MYRG_INFO *myrg_open(const char *name, int mode, int handle_locking)
}
if (!(isam=mi_open(buff,mode,(handle_locking?HA_OPEN_WAIT_IF_LOCKED:0))))
goto err;
if (!m_info)
{
key_parts=isam->s->base.key_parts;
if (!(m_info= (MYRG_INFO*) my_malloc(sizeof(MYRG_INFO) +
files*sizeof(MYRG_TABLE) +
key_parts*sizeof(long),
MYF(MY_WME|MY_ZEROFILL))))
goto err;
if (files)
{
m_info->open_tables=(MYRG_TABLE *) (m_info+1);
m_info->rec_per_key_part=(ulong *) (m_info->open_tables+files);
}
else
{
m_info->open_tables=0;
m_info->rec_per_key_part=0;
}
m_info->tables=files;
m_info->reclength=isam->s->base.reclength;
file_offset=files=0;
errpos=3;
}
m_info->open_tables[files].table= isam;
m_info->open_tables[files].file_offset=(my_off_t) file_offset;
file_offset+=isam->state->data_file_length;
files++;
last_isam=isam;
if (info.reclength && info.reclength != isam->s->base.reclength)
if (m_info.reclength != isam->s->base.reclength)
{
my_errno=HA_ERR_WRONG_MRG_TABLE_DEF;
goto err;
}
info.reclength=isam->s->base.reclength;
m_info->options|= isam->s->options;
m_info->records+= isam->state->records;
m_info->del+= isam->state->del;
m_info->data_file_length+= isam->state->data_file_length;
for (i=0; i < key_parts; i++)
m_info->rec_per_key_part[i]+=isam->s->state.rec_per_key_part[i] / m_info->tables;
}
key_parts=(isam ? isam->s->base.key_parts : 0);
if (!(m_info= (MYRG_INFO*) my_malloc(sizeof(MYRG_INFO)+
files*sizeof(MYRG_TABLE)+
sizeof(long)*key_parts,
MYF(MY_WME))))
goto err;
*m_info=info;
m_info->tables=files;
if (files)
{
m_info->open_tables=(MYRG_TABLE *) (m_info+1);
m_info->rec_per_key_part=(ulong *) (m_info->open_tables+files);
bzero((char*) m_info->rec_per_key_part,sizeof(long)*key_parts);
}
else
{
m_info->open_tables=0;
m_info->rec_per_key_part=0;
}
errpos=2;
for (i=files ; i-- > 0 ; )
{
uint j;
m_info->open_tables[i].table=isam;
m_info->options|=isam->s->options;
m_info->records+=isam->state->records;
m_info->del+=isam->state->del;
m_info->data_file_length+=isam->state->data_file_length;
for (j=0; j < key_parts; j++)
m_info->rec_per_key_part[j]+=isam->s->state.rec_per_key_part[j] / files;
if (i)
isam=(MI_INFO*) (isam->open_list.next->data);
}
/* Don't mark table readonly, for ALTER TABLE ... UNION=(...) to work */
m_info->options&= ~(HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA);
/* Fix fileinfo for easyer debugging (actually set by rrnd) */
file_offset=0;
for (i=0 ; (uint) i < files ; i++)
{
m_info->open_tables[i].file_offset=(my_off_t) file_offset;
file_offset+=m_info->open_tables[i].table->state->data_file_length;
}
if (sizeof(my_off_t) == 4 && file_offset > (ulonglong) (ulong) ~0L)
{
my_errno=HA_ERR_RECORD_FILE_FULL;
@ -156,19 +154,16 @@ MYRG_INFO *myrg_open(const char *name, int mode, int handle_locking)
err:
save_errno=my_errno;
switch (errpos) {
case 2:
case 3:
while (files)
mi_close(m_info->open_tables[--files].table);
my_free((char*) m_info,MYF(0));
/* Fall through */
case 2:
end_io_cache(&file);
/* Fall through */
case 1:
VOID(my_close(fd,MYF(0)));
end_io_cache(&file);
for (i=files ; i-- > 0 ; )
{
isam=last_isam;
if (i)
last_isam=(MI_INFO*) (isam->open_list.next->data);
mi_close(isam);
}
}
my_errno=save_errno;
DBUG_RETURN (NULL);