First part of automatic repair of MyISAM tables.

Error on full disk on repair.
SIGHUP signal handling.
Update with keys on timestamp
Portability fixes


Docs/manual.texi:
  Added documentation about automatic repair of MyISAM tables
client/mysql.cc:
  Remove usage of tempnam.
include/my_sys.h:
  Added create_temp_file
include/myisam.h:
  Fix for disk full on repair
myisam/mi_check.c:
  Fix for disk full on repair
myisam/sort.c:
  Fix for disk full on repair & removed usage of tempnam()
mysys/mf_cache.c:
  Remove usage of tempnam()
mysys/mf_dirname.c:
  Changed convert_dirname to return end 0
mysys/my_fopen.c:
  Security fixes
mysys/my_tempnam.c:
  remove blanks
readline/bind.c:
  Portability fixes
readline/complete.c:
  Portability fixes
readline/histexpand.c:
  Portability fixes
readline/input.c:
  Portability fixes
readline/search.c:
  Portability fixes
readline/shell.c:
  Portability fixes
readline/terminal.c:
  Portability fixes
readline/tilde.c:
  Portability fixes
readline/undo.c:
  Portability fixes
regex/cname.h:
  Portability fixes
regex/debug.c:
  Portability fixes
regex/main.c:
  Portability fixes
regex/regcomp.c:
  Portability fixes
regex/regerror.c:
  Portability fixes
sql/filesort.cc:
  Remove dummy code
sql/ha_myisam.cc:
  Automatic repair of MyISAM tables
sql/ha_myisam.h:
  Automatic repair of MyISAM tables
sql/handler.cc:
  Automatic repair of MyISAM tables
sql/handler.h:
  Automatic repair of MyISAM tables
sql/key.cc:
  Fix for UPDATE with key on timestamp column
sql/mysql_priv.h:
  Automatic repair of MyISAM tables
sql/mysqld.cc:
  Automatic repair of MyISAM tables & signal SIGHUP handling
sql/sql_base.cc:
  Automatic repair of MyISAM tables
sql/sql_class.cc:
  Automatic repair of MyISAM tables
sql/sql_class.h:
  Fix for insert with reference to columns
sql/sql_insert.cc:
  Fix for insert with reference to columns
sql/table.cc:
  Automatic repair of MyISAM tables
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted

1 files changed, 8 insertions, 1 deletions

diff --git a/sql/key.cc b/sql/key.cc
index df3f0fe25d5..8678202922e 100644
--- a/sql/key.cc
+++ b/sql/key.cc
@@ -243,7 +243,10 @@ void key_unpack(String *to,TABLE *table,uint idx)
 }
 
 
-/* Return 1 if any field in a list is part of key */
+/*
+  Return 1 if any field in a list is part of key or the key uses a field
+  that is automaticly updated (like a timestamp)
+*/
 
 bool check_if_key_used(TABLE *table, uint idx, List<Item> &fields)
 {
@@ -255,6 +258,10 @@ bool check_if_key_used(TABLE *table, uint idx, List<Item> &fields)
        key_part++)
   {
     Item_field *field;
+    
+    if (key_part->field == table->timestamp_field)
+      return 1;					// Can't be used for update
+
     f.rewind();
     while ((field=(Item_field*) f++))
     {