1 files changed, 97 insertions, 99 deletions

diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index fec7e5ab20d..cb09935268d 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -66,13 +66,12 @@
 extern "C" int gethostname(char *name, int namelen);
 #endif
 
-static void time_out_user_resource_limits(THD *thd, USER_CONN *uc);
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
+static void time_out_user_resource_limits(THD *thd, USER_CONN *uc);
 static int check_for_max_user_connections(THD *thd, USER_CONN *uc);
 static void decrease_user_connections(USER_CONN *uc);
 #endif /* NO_EMBEDDED_ACCESS_CHECKS */
 static bool check_db_used(THD *thd,TABLE_LIST *tables);
-static bool check_multi_update_lock(THD *thd);
 static void remove_escape(char *name);
 static bool append_file_to_dir(THD *thd, const char **filename_ptr,
 			       const char *table_name);
@@ -672,6 +671,8 @@ bool is_update_query(enum enum_sql_command command)
     safe to test and modify members of the USER_CONN structure.
 */
 
+#ifndef NO_EMBEDDED_ACCESS_CHECKS
+
 static void time_out_user_resource_limits(THD *thd, USER_CONN *uc)
 {
   time_t check_time = thd->start_time ?  thd->start_time : time(NULL);
@@ -689,7 +690,6 @@ static void time_out_user_resource_limits(THD *thd, USER_CONN *uc)
   DBUG_VOID_RETURN;
 }
 
-
 /*
   Check if maximum queries per hour limit has been reached
   returns 0 if OK.
@@ -697,7 +697,6 @@ static void time_out_user_resource_limits(THD *thd, USER_CONN *uc)
 
 static bool check_mqh(THD *thd, uint check_command)
 {
-#ifndef NO_EMBEDDED_ACCESS_CHECKS
   bool error= 0;
   USER_CONN *uc=thd->user_connect;
   DBUG_ENTER("check_mqh");
@@ -731,11 +730,10 @@ static bool check_mqh(THD *thd, uint check_command)
 end:
   (void) pthread_mutex_unlock(&LOCK_user_conn);
   DBUG_RETURN(error);
-#else
-  return (0);
-#endif /* NO_EMBEDDED_ACCESS_CHECKS */
 }
 
+#endif /* NO_EMBEDDED_ACCESS_CHECKS */
+
 
 static void reset_mqh(LEX_USER *lu, bool get_them= 0)
 {
@@ -1595,7 +1593,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   thd->lex->sql_command= SQLCOM_END; /* to avoid confusing VIEW detectors */
   thd->set_time();
   VOID(pthread_mutex_lock(&LOCK_thread_count));
-  thd->query_id=query_id;
+  thd->query_id= global_query_id;
   if (command != COM_STATISTICS && command != COM_PING)
     next_query_id();
   thread_running++;
@@ -1776,7 +1774,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 
     while (!thd->killed && thd->lex->found_semicolon && !thd->net.report_error)
     {
-      char *packet= thd->lex->found_semicolon;
+      char *next_packet= thd->lex->found_semicolon;
       net->no_send_error= 0;
       /*
         Multiple queries exits, execute them individually
@@ -1784,24 +1782,24 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
       if (thd->lock || thd->open_tables || thd->derived_tables ||
           thd->prelocked_mode)
         close_thread_tables(thd);
-      ulong length= (ulong)(packet_end-packet);
+      ulong length= (ulong)(packet_end - next_packet);
 
       log_slow_statement(thd);
 
       /* Remove garbage at start of query */
-      while (my_isspace(thd->charset(), *packet) && length > 0)
+      while (my_isspace(thd->charset(), *next_packet) && length > 0)
       {
-        packet++;
+        next_packet++;
         length--;
       }
       VOID(pthread_mutex_lock(&LOCK_thread_count));
       thd->query_length= length;
-      thd->query= packet;
+      thd->query= next_packet;
       thd->query_id= next_query_id();
       thd->set_time(); /* Reset the query start time. */
       /* TODO: set thd->lex->sql_command to SQLCOM_END here */
       VOID(pthread_mutex_unlock(&LOCK_thread_count));
-      mysql_parse(thd, packet, length);
+      mysql_parse(thd, next_packet, length);
     }
 
     if (!(specialflag & SPECIAL_NO_PRIOR))
@@ -1818,16 +1816,12 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   {
     char *fields, *pend;
     /* Locked closure of all tables */
-    TABLE_LIST *locked_tables= NULL;
     TABLE_LIST table_list;
     LEX_STRING conv_name;
-    /* Saved variable value */
-    my_bool old_innodb_table_locks= 
-              IF_INNOBASE_DB(thd->variables.innodb_table_locks, FALSE);
+
     /* used as fields initializator */
     lex_start(thd, 0, 0);
 
-
     statistic_increment(thd->status_var.com_stat[SQLCOM_SHOW_FIELDS],
 			&LOCK_status);
     bzero((char*) &table_list,sizeof(table_list));
@@ -2023,7 +2017,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
     STATUS_VAR current_global_status_var;
     calc_sum_of_all_status(&current_global_status_var);
 
-    ulong uptime = (ulong) (thd->start_time - start_time);
+    ulong uptime = (ulong) (thd->start_time - server_start_time);
     sprintf((char*) buff,
 	    "Uptime: %lu  Threads: %d  Questions: %lu  Slow queries: %lu  Opens: %lu  Flush tables: %lu  Open tables: %u  Queries per second avg: %.3f",
 	    uptime,
@@ -2070,13 +2064,14 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   {
     statistic_increment(thd->status_var.com_stat[SQLCOM_SET_OPTION],
 			&LOCK_status);
-    enum_mysql_set_option command= (enum_mysql_set_option) uint2korr(packet);
-    switch (command) {
-    case MYSQL_OPTION_MULTI_STATEMENTS_ON:
+    uint opt_command= uint2korr(packet);
+
+    switch (opt_command) {
+    case (int) MYSQL_OPTION_MULTI_STATEMENTS_ON:
       thd->client_capabilities|= CLIENT_MULTI_STATEMENTS;
       send_eof(thd);
       break;
-    case MYSQL_OPTION_MULTI_STATEMENTS_OFF:
+    case (int) MYSQL_OPTION_MULTI_STATEMENTS_OFF:
       thd->client_capabilities&= ~CLIENT_MULTI_STATEMENTS;
       send_eof(thd);
       break;
@@ -2418,7 +2413,7 @@ mysql_execute_command(THD *thd)
 {
   bool res= FALSE;
   bool need_start_waiting= FALSE; // have protection against global read lock
-  int  result= 0;
+  int  up_result= 0;
   LEX  *lex= thd->lex;
   /* first SELECT_LEX (have special meaning for many of non-SELECTcommands) */
   SELECT_LEX *select_lex= &lex->select_lex;
@@ -2561,7 +2556,7 @@ mysql_execute_command(THD *thd)
           new Item_int((ulonglong)thd->variables.select_limit);
     }
 
-    select_result *result=lex->result;
+    select_result *sel_result=lex->result;
     if (all_tables)
     {
       if (lex->orig_sql_command != SQLCOM_SHOW_STATUS_PROC &&
@@ -2588,11 +2583,11 @@ mysql_execute_command(THD *thd)
           to prepend EXPLAIN to any query and receive output for it,
           even if the query itself redirects the output.
         */
-	if (!(result= new select_send()))
+	if (!(sel_result= new select_send()))
 	  goto error;
 	else
-	  thd->send_explain_fields(result);
-	res= mysql_explain_union(thd, &thd->lex->unit, result);
+	  thd->send_explain_fields(sel_result);
+	res= mysql_explain_union(thd, &thd->lex->unit, sel_result);
 	if (lex->describe & DESCRIBE_EXTENDED)
 	{
 	  char buff[1024];
@@ -2603,17 +2598,17 @@ mysql_execute_command(THD *thd)
 	  push_warning(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
 		       ER_YES, str.ptr());
 	}
-	result->send_eof();
-        delete result;
+	sel_result->send_eof();
+        delete sel_result;
       }
       else
       {
-	if (!result && !(result= new select_send()))
+	if (!sel_result && !(sel_result= new select_send()))
           goto error;
 	query_cache_store_query(thd, all_tables);
-	res= handle_select(thd, lex, result, 0);
-        if (result != lex->result)
-          delete result;
+	res= handle_select(thd, lex, sel_result, 0);
+        if (sel_result != lex->result)
+          delete sel_result;
       }
     }
     break;
@@ -2942,7 +2937,7 @@ mysql_execute_command(THD *thd)
     }
     if (select_lex->item_list.elements)		// With select
     {
-      select_result *result;
+      select_result *sel_result;
 
       select_lex->options|= SELECT_NO_UNLOCK;
       unit->set_limit(select_lex);
@@ -2981,20 +2976,20 @@ mysql_execute_command(THD *thd)
           }
         }
 
-        if ((result= new select_create(create_table,
-				       &lex->create_info,
-				       lex->create_list,
-				       lex->key_list,
-				       select_lex->item_list,
-				       lex->duplicates,
-				       lex->ignore)))
+        if ((sel_result= new select_create(create_table,
+                                           &lex->create_info,
+                                           lex->create_list,
+                                           lex->key_list,
+                                           select_lex->item_list,
+                                           lex->duplicates,
+                                           lex->ignore)))
         {
           /*
             CREATE from SELECT give its SELECT_LEX for SELECT,
             and item_list belong to SELECT
           */
-          res= handle_select(thd, lex, result, 0);
-          delete result;
+          res= handle_select(thd, lex, sel_result, 0);
+          delete sel_result;
         }
 	/* reset for PS */
 	lex->create_list.empty();
@@ -3309,22 +3304,23 @@ end_with_restore_list:
       break;
     DBUG_ASSERT(select_lex->offset_limit == 0);
     unit->set_limit(select_lex);
-    res= (result= mysql_update(thd, all_tables,
-                               select_lex->item_list,
-                               lex->value_list,
-                               select_lex->where,
-                               select_lex->order_list.elements,
-                               (ORDER *) select_lex->order_list.first,
-                               unit->select_limit_cnt,
-                               lex->duplicates, lex->ignore));
+    res= (up_result= mysql_update(thd, all_tables,
+                                  select_lex->item_list,
+                                  lex->value_list,
+                                  select_lex->where,
+                                  select_lex->order_list.elements,
+                                  (ORDER *) select_lex->order_list.first,
+                                  unit->select_limit_cnt,
+                                  lex->duplicates, lex->ignore));
     /* mysql_update return 2 if we need to switch to multi-update */
-    if (result != 2)
+    if (up_result != 2)
       break;
+    /* Fall through */
   case SQLCOM_UPDATE_MULTI:
   {
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
     /* if we switched from normal update, rights are checked */
-    if (result != 2)
+    if (up_result != 2)
     {
       if ((res= multi_update_precheck(thd, all_tables)))
         break;
@@ -3408,7 +3404,7 @@ end_with_restore_list:
   case SQLCOM_REPLACE_SELECT:
   case SQLCOM_INSERT_SELECT:
   {
-    select_result *result;
+    select_result *sel_result;
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
     if ((res= insert_precheck(thd, all_tables)))
       break;
@@ -3437,13 +3433,15 @@ end_with_restore_list:
       select_lex->context.table_list= 
         select_lex->context.first_name_resolution_table= second_table;
       res= mysql_insert_select_prepare(thd);
-      if (!res && (result= new select_insert(first_table, first_table->table,
-                                             &lex->field_list,
-                                             &lex->update_list,
-                                             &lex->value_list,
-                                             lex->duplicates, lex->ignore)))
+      if (!res && (sel_result= new select_insert(first_table,
+                                                 first_table->table,
+                                                 &lex->field_list,
+                                                 &lex->update_list,
+                                                 &lex->value_list,
+                                                 lex->duplicates,
+                                                 lex->ignore)))
       {
-	res= handle_select(thd, lex, result, OPTION_SETUP_TABLES_DONE);
+	res= handle_select(thd, lex, sel_result, OPTION_SETUP_TABLES_DONE);
         /*
           Invalidate the table in the query cache if something changed
           after unlocking when changes become visible.
@@ -3461,7 +3459,7 @@ end_with_restore_list:
           first_table->next_local= save_table;
           thd->lock=0;
         }
-        delete result;
+        delete sel_result;
       }
       /* revert changes for SP */
       select_lex->table_list.first= (byte*) first_table;
@@ -3526,7 +3524,7 @@ end_with_restore_list:
     DBUG_ASSERT(first_table == all_tables && first_table != 0);
     TABLE_LIST *aux_tables=
       (TABLE_LIST *)thd->lex->auxiliary_table_list.first;
-    multi_delete *result;
+    multi_delete *del_result;
 
     if (!thd->locked_tables &&
         !(need_start_waiting= !wait_if_global_read_lock(thd, 0, 1)))
@@ -3551,8 +3549,8 @@ end_with_restore_list:
     if ((res= mysql_multi_delete_prepare(thd)))
       goto error;
 
-    if (!thd->is_fatal_error && (result= new multi_delete(aux_tables,
-							  lex->table_count)))
+    if (!thd->is_fatal_error &&
+        (del_result= new multi_delete(aux_tables, lex->table_count)))
     {
       res= mysql_select(thd, &select_lex->ref_pointer_array,
 			select_lex->get_table_list(),
@@ -3564,8 +3562,8 @@ end_with_restore_list:
 			select_lex->options | thd->options |
 			SELECT_NO_JOIN_CACHE | SELECT_NO_UNLOCK |
                         OPTION_SETUP_TABLES_DONE,
-			result, unit, select_lex);
-      delete result;
+			del_result, unit, select_lex);
+      delete del_result;
     }
     else
       res= TRUE;                                // Error
@@ -4243,7 +4241,7 @@ end_with_restore_list:
   {
     uint namelen;
     char *name;
-    int result;
+    int sp_result;
 
     DBUG_ASSERT(lex->sphead != 0);
     DBUG_ASSERT(lex->sphead->m_db.str); /* Must be initialized in the parser */
@@ -4306,17 +4304,17 @@ end_with_restore_list:
 
     if (!lex->definer)
     {
-      bool res= FALSE;
+      bool local_res= FALSE;
       Query_arena original_arena;
       Query_arena *ps_arena = thd->activate_stmt_arena_if_needed(&original_arena);
 
       if (!(lex->definer= create_default_definer(thd)))
-        res= TRUE;
+        local_res= TRUE;
 
       if (ps_arena)
         thd->restore_active_arena(ps_arena, &original_arena);
 
-      if (res)
+      if (local_res)
       {
         /* Error has been already reported. */
         delete lex->sphead;
@@ -4363,8 +4361,8 @@ end_with_restore_list:
     }
 #endif /* NO_EMBEDDED_ACCESS_CHECKS */
 
-    res= (result= lex->sphead->create(thd));
-    if (result == SP_OK)
+    res= (sp_result= lex->sphead->create(thd));
+    if (sp_result == SP_OK)
     {
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
       /* only add privileges if really neccessary */
@@ -4388,7 +4386,7 @@ end_with_restore_list:
     }
     else
     {
-      switch (result) {
+      switch (sp_result) {
       case SP_WRITE_ROW_FAILED:
 	my_error(ER_SP_ALREADY_EXISTS, MYF(0), SP_TYPE_STRING(lex), name);
 	break;
@@ -4521,7 +4519,7 @@ end_with_restore_list:
   case SQLCOM_ALTER_PROCEDURE:
   case SQLCOM_ALTER_FUNCTION:
     {
-      int result;
+      int sp_result;
       sp_head *sp;
       st_sp_chistics chistics;
 
@@ -4536,7 +4534,7 @@ end_with_restore_list:
       if (! sp)
       {
 	if (lex->spname->m_db.str)
-	  result= SP_KEY_NOT_FOUND;
+	  sp_result= SP_KEY_NOT_FOUND;
 	else
 	{
 	  my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
@@ -4561,7 +4559,7 @@ end_with_restore_list:
         {
           my_message(ER_BINLOG_UNSAFE_ROUTINE,
 		     ER(ER_BINLOG_UNSAFE_ROUTINE), MYF(0));
-          result= SP_INTERNAL_ERROR;
+          sp_result= SP_INTERNAL_ERROR;
         }
         else
         {
@@ -4571,15 +4569,15 @@ end_with_restore_list:
             follow the restrictions that log-bin-trust-function-creators=0
             already puts on CREATE FUNCTION.
           */
+          /* Conditionally writes to binlog */
           if (lex->sql_command == SQLCOM_ALTER_PROCEDURE)
-            /* Conditionally writes to binlog */
-            result= sp_update_procedure(thd, lex->spname, &lex->sp_chistics);
+            sp_result= sp_update_procedure(thd, lex->spname,
+                                           &lex->sp_chistics);
           else
-            /* Conditionally writes to binlog */
-            result= sp_update_function(thd, lex->spname, &lex->sp_chistics);
+            sp_result= sp_update_function(thd, lex->spname, &lex->sp_chistics);
         }
       }
-      switch (result)
+      switch (sp_result)
       {
       case SP_OK:
 	send_ok(thd);
@@ -4598,13 +4596,13 @@ end_with_restore_list:
   case SQLCOM_DROP_PROCEDURE:
   case SQLCOM_DROP_FUNCTION:
     {
-      int result;
+      int sp_result;
       int type= (lex->sql_command == SQLCOM_DROP_PROCEDURE ?
                  TYPE_ENUM_PROCEDURE : TYPE_ENUM_FUNCTION);
 
-      result= sp_routine_exists_in_table(thd, type, lex->spname);
+      sp_result= sp_routine_exists_in_table(thd, type, lex->spname);
       mysql_reset_errors(thd, 0);
-      if (result == SP_OK)
+      if (sp_result == SP_OK)
       {
         char *db= lex->spname->m_db.str;
 	char *name= lex->spname->m_name.str;
@@ -4625,12 +4623,11 @@ end_with_restore_list:
 		       ER(ER_PROC_AUTO_REVOKE_FAIL));
 	}
 #endif
-	if (lex->sql_command == SQLCOM_DROP_PROCEDURE)
           /* Conditionally writes to binlog */
-	  result= sp_drop_procedure(thd, lex->spname); /* Conditionally writes to binlog */
+	if (lex->sql_command == SQLCOM_DROP_PROCEDURE)
+	  sp_result= sp_drop_procedure(thd, lex->spname);
 	else
-          /* Conditionally writes to binlog */
-	  result= sp_drop_function(thd, lex->spname); /* Conditionally writes to binlog */
+	  sp_result= sp_drop_function(thd, lex->spname);
       }
       else
       {
@@ -4654,16 +4651,15 @@ end_with_restore_list:
 	}
 #endif
 	if (lex->spname->m_db.str)
-	  result= SP_KEY_NOT_FOUND;
+	  sp_result= SP_KEY_NOT_FOUND;
 	else
 	{
 	  my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
 	  goto error;
 	}
       }
-      res= result;
-      switch (result)
-      {
+      res= sp_result;
+      switch (sp_result) {
       case SP_OK:
 	send_ok(thd);
 	break;
@@ -5299,7 +5295,9 @@ check_table_access(THD *thd, ulong want_access,TABLE_LIST *tables,
 {
   uint found=0;
   ulong found_access=0;
+#ifndef EMBEDDED_LIBRARY
   TABLE_LIST *org_tables= tables;
+#endif
   TABLE_LIST *first_not_own_table= thd->lex->first_not_own_table();
   Security_context *sctx= thd->security_ctx, *backup_ctx= thd->security_ctx;
   /*
@@ -6504,18 +6502,18 @@ void st_select_lex::set_lock_for_tables(thr_lock_type lock_type)
     0     on success
 */
 
-bool st_select_lex_unit::add_fake_select_lex(THD *thd)
+bool st_select_lex_unit::add_fake_select_lex(THD *thd_arg)
 {
   SELECT_LEX *first_sl= first_select();
   DBUG_ENTER("add_fake_select_lex");
   DBUG_ASSERT(!fake_select_lex);
 
-  if (!(fake_select_lex= new (thd->mem_root) SELECT_LEX()))
+  if (!(fake_select_lex= new (thd_arg->mem_root) SELECT_LEX()))
       DBUG_RETURN(1);
   fake_select_lex->include_standalone(this, 
                                       (SELECT_LEX_NODE**)&fake_select_lex);
   fake_select_lex->select_number= INT_MAX;
-  fake_select_lex->parent_lex= thd->lex; /* Used in init_query. */
+  fake_select_lex->parent_lex= thd_arg->lex; /* Used in init_query. */
   fake_select_lex->make_empty_select();
   fake_select_lex->linkage= GLOBAL_OPTIONS_TYPE;
   fake_select_lex->select_limit= 0;
@@ -6535,9 +6533,9 @@ bool st_select_lex_unit::add_fake_select_lex(THD *thd)
     */ 
     global_parameters= fake_select_lex;
     fake_select_lex->no_table_names_allowed= 1;
-    thd->lex->current_select= fake_select_lex;
+    thd_arg->lex->current_select= fake_select_lex;
   }
-  thd->lex->pop_context();
+  thd_arg->lex->pop_context();
   DBUG_RETURN(0);
 }