RENAME TABLE against a table with DATA/INDEX DIRECTORY overwrites
the file to which the symlink points.

This is security issue, because it is possible to create a table with
some name in some non-system database and set DATA/INDEX DIRECTORY
to mysql system database. Renaming this table to one of mysql system
tables (e.g. user, host) would overwrite the system table.

Return an error when the file to which the symlink points exist.


mysql-test/r/symlink.result:
  A test case for BUG#32111.
mysql-test/t/symlink.test:
  A test case for BUG#32111.
mysys/my_symlink2.c:
  Return an error when the file to which the symlink points exist.

gettimeofday() can fail and presumably, so can time().
Keep an eye on it.

Since we have no data on this at all so far, we just
retry on failure (and log the event), assuming that
this is just an intermittant failure. This might of
course hang the threat until we succeed. Once we know
more about these failures, an appropriate more clever
scheme may be picked (only try so many times per thread,
etc., if that fails, return last "good" time() we got or
some such).  Using sql_print_information() to log as this
probably only occurs in high load scenarios where the debug-
trace likely is disabled (or might interfere with testing
the effect).  No test-case as this is a non-deterministic
issue.


sql/mysql_priv.h:
  Bug#27198: Error returns from time() are ignored
  
  move declarations for log.cc to before inclusion of
  sql_class.h as we now use sql_print_information() in
  there.
sql/sql_class.h:
  Bug#27198: Error returns from time() are ignored
  
  gettimeofday() can fail and presumably, so can time().
  Keep an eye on it.

  Updated to version 0.6 of the text


EXCEPTIONS-CLIENT:
  Updated to version 0.6 of the text

  Added test for sched_yield() possibly in -lposix4 on Solaris


configure.in:
  Added test for sched_yield() possibly in -lposix4 on Solaris

  Removed unused files
.del-my_winsem.c:
  Delete: mysys/my_winsem.c
.del-my_semaphore.c:
  Delete: mysys/my_semaphore.c
.del-my_semaphore.h:
  Delete: include/my_semaphore.h


BitKeeper/deleted/.del-my_semaphore.c:
  Delete: mysys/my_semaphore.c
BitKeeper/deleted/.del-my_semaphore.h:
  Delete: include/my_semaphore.h
BitKeeper/deleted/.del-my_winsem.c:
  Delete: mysys/my_winsem.c
VC++Files/mysys/mysys.dsp:
  Removed unused files
configure.in:
  Removed unused files
include/Makefile.am:
  Removed unused files
mysys/Makefile.am:
  Removed unused files

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg0306/40

into  mysql.com:/home/kent/bk/tmp/mysql-4.0

support-files/mysql.spec.sh:
  Another man page.

support-files/mysql.spec.sh:
  Add missing man pages.

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/40

  EXCEPTIONS-CLIENT is now static part of repository


Docs/Makefile.am:
  EXCEPTIONS-CLIENT is now static part of repository

  EXCEPTIONS-CLIENT is now static part of repository
EXCEPTIONS-CLIENT:
  BitKeeper file /home/kent/bk/tmp/mysql-4.0/EXCEPTIONS-CLIENT


EXCEPTIONS-CLIENT:
  BitKeeper file /home/kent/bk/tmp/mysql-4.0/EXCEPTIONS-CLIENT
Docs/Makefile.am:
  EXCEPTIONS-CLIENT is now static part of repository

into  trift2.:/MySQL/M40/mysql-4.0

Companion change to this one
   ChangeSet@1.2206, 2007-01-22 02:32:07+02:00, jani@a88-113-38-195.elisa-laajakaista.fi +8 -0
     include/my_pthread.h@1.67, 2007-01-22 02:32:06+02:00, jani@a88-113-38-195.elisa-laajakaista.fi +31 -10
which renamed "sigset()" -> "my_sigset()" but forgot to do it for Windows ...


include/config-win.h:
  Companion change to this one
     ChangeSet@1.2206, 2007-01-22 02:32:07+02:00, jani@a88-113-38-195.elisa-laajakaista.fi +8 -0
       include/my_pthread.h@1.67, 2007-01-22 02:32:06+02:00, jani@a88-113-38-195.elisa-laajakaista.fi +31 -10
  which renamed "sigset()" -> "my_sigset()" but forgot to do it for Windows ...

into  siva.hindu.god:/home/tsmith/m/bk/maint/40

mysys/my_pthread.c:
  Linkage problem with previous patch: "thr_client_alarm" must be declared in here.
mysys/thr_alarm.c:
  Linkage problem: Declare "thr_client_alarm" over in "mysys/my_pthread.c".

Break a double declare of "uint thr_client_alarm" between "mysys/thr_alarm.c" and "mysys/my_pthread.c".


mysys/my_pthread.c:
  Break a double declare: "uint thr_client_alarm" is also declared in "mysys/thr_alarm.c", take it from there.

mysys/my_thr_init.c:
  Compile error on Windows: Both "SIGALRM" and "SIGUSR1" are undefined.
  Fix by hiding the whole section, according to Jani it is not needed on Windows.

same fix from 4.0.

into  siva.hindu.god:/home/tsmith/m/bk/maint/40

into  production.mysql.com:/usersnfs/jamppa/mysql-4.0


include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
mysys/default.c:
  Auto merged
mysys/my_pthread.c:
  Auto merged
mysys/my_thr_init.c:
  Auto merged
mysys/thr_alarm.c:
  Auto merged
sql/mysqld.cc:
  Auto merged

Move get_thread_lib to mysys/my_pthread.c
Set 'thr_client_alarm' to signal number used by thr_alarm to give alarms


include/my_global.h:
  Fixed to be same as in 5.1
include/my_pthread.h:
  Move things around to be more in line with rest of code
mysys/default.c:
  Fixed two wrong pointer incrementations.
mysys/my_pthread.c:
  Cleanup: Use variable thr_client_alarm
mysys/my_thr_init.c:
  Detect thread library at startup.
  Set also thr_client_alarm signal here, so that we get
  it in init_signals() in mysqld
mysys/thr_alarm.c:
  Set thr_client_alarm depending on which thread library we are using
sql/mysqld.cc:
  Move get_thread_lib to mysys/my_pthread.c

Move get_thread_lib to mysys/my_pthread.c
Set 'thr_client_alarm' to signal number used by thr_alarm to give alarms



include/my_global.h:
  Fixed to be same as in 5.1
include/my_pthread.h:
  Move things around to be more in line with rest of code
include/thr_alarm.h:
  extern of thr_client_alarm
mysys/default.c:
  Fixed two wrong pointer incrementations.
mysys/my_pthread.c:
  Cleanup: Use variable thr_client_alarm
mysys/my_thr_init.c:
  Detect thread library at startup
mysys/thr_alarm.c:
  Set thr_client_alarm depending on which thread library we are using
sql/mysqld.cc:
  Move get_thread_lib to mysys/my_pthread.c

Fix to check library in use during runtime.
Fix for Bug#16995, "idle connections not being killed due to timeout when NPTL is used".


BUILD/SETUP.sh:
  To avoid warnings during compilation.
configure.in:
  Fixed configure so that it can correctly detect
  between NPTL and Linuxthreads.
include/my_global.h:
  Fix for Linuxthreads.
include/my_pthread.h:
  Added defines for different libraries that can be detected.
  Currently only 'other', 'nptl', and 'lt' (linuxthreads) are
  being used.
  
  changed sigset() and signal() to my_sigset() and my_signal()
include/thr_alarm.h:
  Removed defines for Linuxthreads. This is now detected during
  runtime and handled in the thr_alarm.c
mysys/my_pthread.c:
  Runtime check for library.
mysys/thr_alarm.c:
  Runtime checks for library and corresponding
  signals.
sql/mysqld.cc:
  Added function for detecting thread library in use
  during start-up.
  
  THR_KILL_SIGNAL removed, setting signals during runtime.

into  siva.hindu.god:/home/tsmith/m/bk/mrg-jan17/maint/40

into  trift2.:/MySQL/M40/mysql-4.0

into  mysql.com:/data0/mysqldev/my/mysql-4.0-15815

into  trift2.:/MySQL/M40/mysql-4.0

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.0-maint

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/g40

no future build of it will include Berkeley DB:
Remove it from the Windows VC++ project files.

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.0

mysys/mf_iocache.c:
  Exclude
mysys/my_seek.c:
  Exclude

into  moonlight.home:/home/tomash/src/mysql_ab/mysql-4.0-bug23443

           server

The problem was that when memory was exhausted HEAP engine could crash
(GROUP BY uses HEAP TABLE).  Alternatively, if SET was used, it could
report an error "You may only use constant expressions with SET" instead
of "Out of memory (Needed NNNNNN bytes)".

The solution is:
 - pass MY_WME to (some) calls to my_malloc() to get correct message.
 - fix heap_write() so that the first key is skipped during cleanup
   on ENOMEM because it wasn't inserted and doesn't have to be
   deleted.

No test case is provided because we can't test out-of-memory behaviour
in our current test framework.


heap/hp_block.c:
  If allocation fails, write an error message.
heap/hp_write.c:
  On ENOMEM, skip the first key in cleanup, as it wasn't inserted yet.
sql/item_func.cc:
  Add MY_WME so that OOM error will be reported.

- "make_binary_distribution" accepts a dummy "--platform=" argument.

- "MySQL-shared-compat.spec" uses a "version40" define symbol internally.


scripts/make_binary_distribution.sh:
  Newer versions of the release build tools call this with a "--platform=" argument
  which we seem not to need in 4.0, but which makes the tool crash (happened on SCO).
  
  Rather than add another version check into the build tools, just accept a "--platform="
  argument and ignore it, just give a message.
support-files/MySQL-shared-compat.spec.sh:
  The current version of "Do-shared-compat" needs two digits to identify the release families
  (to differ between 4.0 and 4.1), so the variable "version4" must get renamed to "version40".

- Bug #15815: Very poor performance with multiple queries running concurrently
- Bug #22868: 'Thread thrashing' with > 50 concurrent conns under an upd-intensive workloadw

This is a patch from an e-mail; it is not included in an InnoDB snapshot.