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Bug #37339: SHOW VARIABLES not working properly with multi-byte datadir

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The SHOW VARIABLES LIKE .../SELECT @@/SELECT ... FROM INFORMATION_SCHEMA.VARIABLES
were assuming that all the system variables are in system charset (UTF-8).
However the variables that are settable through command line will have a different
character set (character_set_filesystem).
Fixed the server to remember the correct character set of basedir, datadir, tmpdir,
ssl, plugin_dir, slave_load_tmpdir, innodb variables; init_connect and init_slave 
variables and use it when processing data.

mysql-test/r/ctype_filesystem.result:
  Bug #37339: test case (should be in utf-8)
mysql-test/t/ctype_filesystem-master.opt:
  Bug #37339: test case (should be in ISO-8859-1)
mysql-test/t/ctype_filesystem.test:
  Bug #37339: test case
sql/mysqld.cc:
  Bug #37339: remember the correct character set for init_slave and init_connect
sql/set_var.cc:
  Bug #37339: 
    - remember the character set of the relevant variables
    - implement storing and using the correct 
      character set
sql/set_var.h:
  Bug #37339: implement storing and using the correct 
  character set
sql/sql_show.cc:
  Bug #37339: implement storing and using the correct 
  character set
This commit is contained in:
Georgi Kodinov 2008-11-28 16:25:16 +02:00
commit 8e688a7a02
7 changed files with 116 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

10
sql/sql_show.cc
View file

@ -1441,6 +1441,7 @@ static bool show_status_array(THD *thd, const char *wild,
char name_buffer[80];
int len;
LEX_STRING null_lex_str;
CHARSET_INFO *charset= system_charset_info;
DBUG_ENTER("show_status_array");
null_lex_str.str= 0; // For sys_var->value_ptr()
@ -1469,9 +1470,10 @@ static bool show_status_array(THD *thd, const char *wild,
long nr;
if (show_type == SHOW_SYS)
{
show_type= ((sys_var*) value)->show_type();
value= (char*) ((sys_var*) value)->value_ptr(thd, value_type,
&null_lex_str);
sys_var *var= ((sys_var *) value);
show_type= var->show_type();
value= (char*) var->value_ptr(thd, value_type, &null_lex_str);
charset= var->charset(thd);
}
pos= end= buff;
@ -1794,7 +1796,7 @@ static bool show_status_array(THD *thd, const char *wild,
restore_record(table, s->default_values);
table->field[0]->store(name_buffer, strlen(name_buffer),
system_charset_info);
table->field[1]->store(pos, (uint32) (end - pos), system_charset_info);
table->field[1]->store(pos, (uint32) (end - pos), charset);
if (schema_table_store_record(thd, table))
DBUG_RETURN(TRUE);
}