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Merge 4.1 -> 5.0.

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This commit is contained in:
pem@mysql.com
2004-04-07 19:07:44 +02:00
parent 1541f2e794 61fd95d168
commit dfd59e296e
790 changed files with 46875 additions and 109029 deletions
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73
sql/sql_rename.cc
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@ -24,6 +24,8 @@
static TABLE_LIST *rename_tables(THD *thd, TABLE_LIST *table_list,
bool skip_error);
static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list);
/*
Every second entry in the table_list is the original name and every
second entry is the new name.
@ -46,6 +48,8 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
DBUG_RETURN(1);
}
if (wait_if_global_read_lock(thd,0))
DBUG_RETURN(1);
VOID(pthread_mutex_lock(&LOCK_open));
if (lock_table_names(thd, table_list))
goto err;
@ -54,17 +58,10 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
if ((ren_table=rename_tables(thd,table_list,0)))
{
/* Rename didn't succeed; rename back the tables in reverse order */
TABLE_LIST *prev=0,*table;
/* Reverse the table list */
TABLE_LIST *table;
while (table_list)
{
TABLE_LIST *next=table_list->next;
table_list->next=prev;
prev=table_list;
table_list=next;
}
table_list=prev;
/* Reverse the table list */
table_list= reverse_table_list(table_list);
/* Find the last renamed table */
for (table=table_list ;
@ -73,6 +70,10 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
table=table->next->next; // Skip error table
/* Revert to old names */
rename_tables(thd, table, 1);
/* Revert the table list (for prepared statements) */
table_list= reverse_table_list(table_list);
error= 1;
}
@ -92,10 +93,36 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
err:
pthread_mutex_unlock(&LOCK_open);
start_waiting_global_read_lock(thd);
DBUG_RETURN(error);
}
/*
reverse table list
SYNOPSIS
reverse_table_list()
table_list pointer to table _list
RETURN
pointer to new (reversed) list
*/
static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list)
{
TABLE_LIST *prev= 0;
while (table_list)
{
TABLE_LIST *next= table_list->next;
table_list->next= prev;
prev= table_list;
table_list= next;
}
return (prev);
}
/*
Rename all tables in list; Return pointer to wrong entry if something goes
wrong. Note that the table_list may be empty!
@ -111,19 +138,31 @@ rename_tables(THD *thd, TABLE_LIST *table_list, bool skip_error)
{
db_type table_type;
char name[FN_REFLEN];
new_table=ren_table->next;
const char *new_alias, *old_alias;
new_table=ren_table->next;
if (lower_case_table_names == 2)
{
old_alias= ren_table->alias;
new_alias= new_table->alias;
}
else
{
old_alias= ren_table->real_name;
new_alias= new_table->real_name;
}
sprintf(name,"%s/%s/%s%s",mysql_data_home,
new_table->db,new_table->real_name,
reg_ext);
new_table->db, new_alias, reg_ext);
unpack_filename(name, name);
if (!access(name,F_OK))
{
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),name);
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),new_alias);
DBUG_RETURN(ren_table); // This can't be skipped
}
sprintf(name,"%s/%s/%s%s",mysql_data_home,
ren_table->db,ren_table->real_name,
ren_table->db, old_alias,
reg_ext);
unpack_filename(name, name);
if ((table_type=get_table_type(name)) == DB_TYPE_UNKNOWN)
{
my_error(ER_FILE_NOT_FOUND, MYF(0), name, my_errno);
@ -131,8 +170,8 @@ rename_tables(THD *thd, TABLE_LIST *table_list, bool skip_error)
DBUG_RETURN(ren_table);
}
else if (mysql_rename_table(table_type,
ren_table->db, ren_table->real_name,
new_table->db, new_table->real_name))
ren_table->db, old_alias,
new_table->db, new_alias))
{
if (!skip_error)
DBUG_RETURN(ren_table);