'conc_sys' test

Concurrent execution of SELECT involing at least two INFORMATION_SCHEMA
tables, DROP DATABASE statement and DROP TABLE statement could have
resulted in stalled connection for this SELECT statement.

The problem was that for the first query of a join there was a race
between select from I_S.TABLES and DROP DATABASE, and the error (no
such database) was prepared to be send to the client, but the join
processing was continued.  On second query to I_S.COLUMNS there was a
race with DROP TABLE, but this error (no such table) was downgraded to
warning, and thd->net.report_error was reset.  And so neither result
nor error was sent to the client.

The solution is to stop join processing once it is clear we are going
to report a error, and also to downgrade to warnings file system errors
like 'no such database' (unless we are in the 'SHOW' command), because
I_S is designed not to use locks and the query to I_S should not abort
if something is dropped in the middle.

No test case is provided since this bug is a result of a race, and is
timing dependant.  But we test that plain SHOW TABLES and SHOW COLUMNS
give a error if there is no such database or a table respectively.


mysql-test/r/show_check.result:
  Add result for the test that SHOW TABLES and SHOW COLUMNS give a error
  if there is no such database or a table respectively.
mysql-test/t/show_check.test:
  Add test case that SHOW TABLES and SHOW COLUMNS give a error
  if there is no such database or a table respectively.
sql/mysql_priv.h:
  Remove prototype of mysql_find_files(), which is made static under
  find_files() name.
sql/sql_show.cc:
  Rename mysql_find_files() to find_files() and make it static.
  Return FIND_FILES_OK for success, FIND_FILES_OOM for out of memory,
  and FIND_FILES_DIR for directory reading error.
  Downgrade error to warning in get_all_tables() if it is a
  FIND_FILES_DIR error, and we are not in the 'SHOW' command.
  Once 'result' is set to 1 in get_schema_tables_result(), there's no
  need in continuing iterations, as we are about to return a error.

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-bug21013

           and Stored Procedure

The essence of the bug was that for every re-execution of stored
routine or prepared statement new items for character set conversions
were created, thus increasing the number of items and the time of their
processing, and creating memory leak.

No test case is provided since current test suite can't cover such type
of bugs.


mysql-test/r/sp.result:
  Add result for bug#21013: Performance Degrades when importing data
  that uses Trigger and Stored Procedure.
mysql-test/t/sp.test:
  Add test case for bug#21013: Performance Degrades when importing data
  that uses Trigger and Stored Procedure.
sql/item.cc:
  Switch arena only when in statement prepare mode.  Subsequent executions
  will use cached item tree.

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-bug18630


sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_trigger.cc:
  Auto merged

           context.

Routine arguments were evaluated in the security context of the routine
itself, not in the caller's context.

The bug is fixed the following way:

  - Item_func_sp::find_and_check_access() has been split into two
    functions: Item_func_sp::find_and_check_access() itself only
    finds the function and check that the caller have EXECUTE privilege
    on it.  New function set_routine_security_ctx() changes security
    context for SUID routines and checks that definer have EXECUTE
    privilege too.

  - new function sp_head::execute_trigger() is called from
    Table_triggers_list::process_triggers() instead of
    sp_head::execute_function(), and is effectively just as the
    sp_head::execute_function() is, with all non-trigger related code
    removed, and added trigger-specific security context switch.

  - call to Item_func_sp::find_and_check_access() stays outside
    of sp_head::execute_function(), and there is a code in
    sql_parse.cc before the call to sp_head::execute_procedure() that
    checks that the caller have EXECUTE privilege, but both
    sp_head::execute_function() and sp_head::execute_procedure() call
    set_routine_security_ctx() after evaluating their parameters,
    and restore the context after the body is executed.


mysql-test/r/sp-security.result:
  Add test case for bug#18630: Arguments of suid routine calculated
  in wrong security context.
mysql-test/t/sp-security.test:
  Add result for bug#18630: Arguments of suid routine calculated
  in wrong security context.
sql/item_func.cc:
  Do not change security context before executing the function, as it
  will be changed after argument evaluation.
  Do not change security context in Item_func_sp::find_and_check_access().
sql/item_func.h:
  Change prototype for Item_func_sp::find_and_check_access().
sql/sp_head.cc:
  Add set_routine_security_ctx() function.
  Add sp_head::execute_trigger() method.
  Change security context in sp_head::execute_trigger(), and in
  sp_head::execute_function() and sp_head::execute_procedure()
  after argument evaluation.
  Move pop_all_cursors() call to sp_head::execute().
sql/sp_head.h:
  Add declaration for sp_head::execute_trigger() and
  set_routine_security_ctx().
sql/sql_parse.cc:
  Do not change security context before executing the procedure, as it
  will be changed after argument evaluation.
sql/sql_trigger.cc:
  Call new sp_head::execute_trigger() instead of
  sp_head::execute_function(), which is responsible to switch
  security context.

into  bodhi.local:/opt/local/work/mysql-5.0-runtime

sql/item_timefunc.cc:
  Fix a valgrind warning in type_date test.	

into  dl145k.mysql.com:/data0/mkindahl/bk/mysql-5.0-rpl


ndb/include/kernel/GlobalSignalNumbers.h:
  Auto merged
ndb/src/kernel/blocks/dbdict/Dbdict.cpp:
  Auto merged
ndb/src/kernel/blocks/dbdict/Dbdict.hpp:
  Auto merged
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  Auto merged
ndb/src/ndbapi/ndberror.c:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged

when dropping/creating tables"


mysql-test/r/ps.result:
  A post-merge fix.
mysql-test/t/ps.test:
  A post-merge fix: all 5.0 tests should go after 4.1 tests.
sql/sql_lex.cc:
  auxilliary -> auxiliary
sql/sql_prepare.cc:
  auxilliary -> auxiliary
sql/table.cc:
  Update st_table_list::reinit_before_use in 5.0 to include 5.0-specific
  cleanups.
sql/table.h:
  st_table_list::reinit_before_use is public.

into  bodhi.local:/opt/local/work/mysql-5.0-runtime-merge-41


ndb/src/mgmsrv/ConfigInfo.cpp:
  Auto merged
sql/table.cc:
  Auto merged
mysql-test/r/ps.result:
  Manual merge: use local.
mysql-test/t/ps.test:
  Manual merge: remove duplicate test cases from ps.test.
sql/sql_lex.cc:
  Manual merge.
sql/sql_prepare.cc:
  Manual merge.
sql/table.h:
  Manual merge.

into  bodhi.local:/opt/local/work/mysql-5.0-runtime-merge-41


sql/sql_table.cc:
  Auto merged

into  chilla.local:/home/mydev/mysql-5.0-amerge


sql/handler.h:
  Auto merged
sql/sql_table.cc:
  Auto merged

into  trift2.:/M50/mysql-5.0

into  dl145k.mysql.com:/data0/mkindahl/bk/MERGE/mysql-5.0-merge


ndb/include/kernel/GlobalSignalNumbers.h:
  Auto merged
ndb/src/kernel/blocks/dbdict/Dbdict.cpp:
  Auto merged
ndb/src/kernel/blocks/dbdict/Dbdict.hpp:
  Auto merged
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  Auto merged
ndb/src/ndbapi/ndberror.c:
  Auto merged

into  bodhi.local:/opt/local/work/mysql-5.0-runtime-merge-41


sql/opt_range.cc:
  Auto merged
support-files/mysql.spec.sh:
  Auto merged
mysql-test/Makefile.am:
  Manual merge.

sql/sql_locale.cc:
  "true" -> TRUE

into  trift2.:/M50/mysql-5.0


configure.in:
  Auto merged

sql/sql_locale.cc:
  Fix Windows compilation failure "cannot convert from 'const char [6]' 
  to 'const BOOL'" and an apparent bug (use of "FALSE" instead of FALSE
  for initialization of is_ascii member of MY_LOCALE)

into  gbichot3.local:/home/mysql_src/mysql-5.0

mysql-test/r/myisam.result:
  Fix test results.
mysql-test/t/myisam.test:
  In 5.0 show create table also outputs data directory.
  For the test for Bug#8706 it's MYSQLTEST_VARDIR, and there is no way
  to replace it with anything else in test output.

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my50-1.2167.1.2


ndb/include/kernel/GlobalSignalNumbers.h:
  Auto merged
ndb/src/common/debugger/signaldata/SignalNames.cpp:
  Auto merged
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  Auto merged
ndb/src/kernel/blocks/ndbcntr/NdbcntrMain.cpp:
  Auto merged
ndb/test/run-test/daily-basic-tests.txt:
  Auto merged

ndb/src/kernel/blocks/dbdict/DictLock.txt:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD
ndb/src/kernel/blocks/dbdih/Dbdih.hpp:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD
ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD
ndb/src/kernel/vm/SimulatedBlock.cpp:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD
ndb/src/kernel/vm/SimulatedBlock.hpp:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD
ndb/test/run-test/daily-basic-tests.txt:
  wait until SL_STARTED before sending DICT_UNLOCK_ORD

ndb/include/kernel/GlobalSignalNumbers.h:
  5.0 : add NODE_START_REP from 5.1
ndb/src/common/debugger/signaldata/SignalNames.cpp:
  5.0 : add NODE_START_REP from 5.1
ndb/src/kernel/blocks/ndbcntr/NdbcntrMain.cpp:
  5.0 : add NODE_START_REP from 5.1
ndb/src/kernel/vm/SimulatedBlock.cpp:
  5.0 : add NODE_START_REP from 5.1
ndb/src/kernel/vm/SimulatedBlock.hpp:
  5.0 : add NODE_START_REP from 5.1

fails"


mysql-test/t/myisam.test:
  Fix myisam.test to work with non-default mysqltest var directory.

VC++Files/libmysqld/libmysqld.dsp:
  Add sql_locale.cpp
VC++Files/libmysqld/libmysqld.vcproj:
  Add sql_locale.cpp
VC++Files/sql/mysqld.dsp:
  Add sql_locale.cpp
VC++Files/sql/mysqld.vcproj:
  Add sql_locale.cpp

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my50

ndb/src/kernel/blocks/dbtup/DbtupMeta.cpp:
  non-debug compile fix

into  dsl-hkigw8-feb1fb00-100.dhcp.inet.fi:/usr_rh9/home/elkin.rh9/MySQL/TEAM/FIXES/5.0/20919_temp_nlog


sql/sql_base.cc:
  Manual merge

into  trift2.:/M50/mysql-5.0

support-files/mysql.spec.sh:
  Fix a typing error in the "make" target for the Perl script to run the tests.

into  trift2.:/M50/back23-5.0


support-files/mysql.spec.sh:
  Auto merged

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my50-bug20847

mysql-test/Makefile.am:
  fix cp of mode 444 files

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my50-bug20847

closing temp tables through end_thread
had a flaw in binlog-off branch of close_temporary_tables where
next table to close was reset via table->next
 for (table= thd->temporary_tables; table; table= table->next)
which was wrong since the current table instance got destoyed at
	close_temporary(table, 1);

The fix adapts binlog-on branch method to engage the loop's internal 'next' variable which holds table->next prior table's destoying.



sql/sql_base.cc:
  no-binlog branch is fixed: scanning across temporary_tables must be careful to save next table since the current is being destroyed inside of close_temporary. 
  binlog-is-open case is ok.

between pointer to function and pointer to object.


sql/item_func.cc:
  Use typedef names instead of hard-coded types for udf init/deinit
  functions.
sql/sql_udf.cc:
  Use typedef names for udf function types.

into  bodhi.local:/opt/local/work/mysql-5.0-runtime-merge-41


myisam/mi_create.c:
  Auto merged
mysql-test/r/myisam.result:
  Auto merged
mysql-test/t/myisam.test:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_trigger.cc:
  Auto merged
support-files/mysql.spec.sh:
  Auto merged
mysql-test/r/federated.result:
  Manual merge.
mysql-test/t/federated.test:
  Manual merge.