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Fix for bug#24219 ALTER TABLE ... RENAME TO ... , DISABLE KEYS leads to crash

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(this is the 5.0 patch, because 4.1 differs)
  
There was an improper order of doing chained operations.
  
To the documentor: ENABLE|DISABLE KEYS combined with RENAME TO, and no other
ALTER TABLE clause, leads to server crash independent of the presence of
indices and data in the table.


mysql-test/r/alter_table.result:
  post-merge fix
  my locale is utf8, and this breaks non-utf8 stuff when doing manual merge :(
sql/sql_table.cc:
  If there is operation on the KEYS, first do it
  and then do a rename if there is such. Or, we will crash because
  the underlying table has changed.
This commit is contained in:
unknown
2006-11-16 14:01:51 +01:00
parent db42257de8
commit d63fa0a407
2 changed files with 49 additions and 44 deletions
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51
sql/sql_table.cc
View File

@@ -3300,13 +3300,35 @@ view_err:
if (!(alter_info->flags & ~(ALTER_RENAME | ALTER_KEYS_ONOFF)) &&
!table->s->tmp_table) // no need to touch frm
{
error=0;
VOID(pthread_mutex_lock(&LOCK_open));
if (new_name != table_name || new_db != db)
switch (alter_info->keys_onoff) {
case LEAVE_AS_IS:
error= 0;
break;
case ENABLE:
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
error= table->file->enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
case DISABLE:
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
error=table->file->disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
}
if (error == HA_ERR_WRONG_COMMAND)
{
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA),
table->alias);
error= 0;
}
if (!error && (new_name != table_name || new_db != db))
{
thd->proc_info="rename";
/* Then do a 'simple' rename of the table */
error=0;
if (!access(new_name_buff,F_OK))
{
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_name);
@@ -3328,31 +3350,14 @@ view_err:
}
}
if (!error)
{
switch (alter_info->keys_onoff) {
case LEAVE_AS_IS:
break;
case ENABLE:
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
error= table->file->enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
case DISABLE:
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
error=table->file->disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
}
}
if (error == HA_ERR_WRONG_COMMAND)
{
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA),
table->alias);
error=0;
error= 0;
}
if (!error)
{
if (mysql_bin_log.is_open())
@@ -3370,7 +3375,7 @@ view_err:
error= -1;
}
VOID(pthread_mutex_unlock(&LOCK_open));
table_list->table=0; // For query cache
table_list->table= NULL; // For query cache
query_cache_invalidate3(thd, table_list, 0);
DBUG_RETURN(error);
}