Added --user=userid to mysqld

Fix for ctypes on windows
Cleanup max_queries_per_hour

Docs/manual.texi

@@ -14207,9 +14207,9 @@ Sets the default transaction isolation level.  @xref{SET TRANSACTION}.
 Path for temporary files. It may be useful if your default @code{/tmp}
 directory resides on a partition too small to hold temporary tables.
 
-@item -u, --user=user_name
-Run @code{mysqld} daemon as user @code{user_name}.  This option is
-@emph{mandatory} when starting @code{mysqld} as root.
+@item -u, --user= [user_name | userid]
+Run @code{mysqld} daemon as user @code{user_name} or @code{userid} (numeric).
+This option is @emph{mandatory} when starting @code{mysqld} as root.
 
 @item -V, --version
 Output version information and exit.
@@ -48411,6 +48411,8 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
 
 @itemize @bullet
 @item
+Allow numeric user id to @code{mysqld --user=#}.
+@item
 Fixed a bug where @code{SQL_CALC_ROWS} returned a wrong value when used
 with one table and @code{ORDER BY} and with InnoDB tables.
 @item

include/m_ctype.h

@@ -62,9 +62,6 @@ extern const char *compiled_charset_name(uint charset_number);
 #define MY_CHARSET_UNDEFINED 0
 #define MY_CHARSET_CURRENT (default_charset_info->number)
 
-#ifdef __WIN__
-#include <ctype.h>
-#endif
 /* Don't include std ctype.h when this is included */
 #define _CTYPE_H
 #define _CTYPE_H_
@@ -72,6 +69,26 @@ extern const char *compiled_charset_name(uint charset_number);
 #define __CTYPE_INCLUDED
 #define _CTYPE_USING   /* Don't put names in global namespace. */
 
+/* Fix things, if ctype.h would have been included before */
+#undef toupper
+#undef _toupper
+#undef _tolower
+#undef toupper
+#undef tolower
+#undef isalpha
+#undef isupper
+#undef islower
+#undef isdigit
+#undef isxdigit
+#undef isalnum
+#undef isspace
+#undef ispunct
+#undef isprint
+#undef isgraph
+#undef iscntrl
+#undef isascii
+#undef toascii
+
 #define	_U	01	/* Upper case */
 #define	_L	02	/* Lower case */
 #define	_N	04	/* Numeral (digit) */
@@ -86,7 +103,6 @@ extern const char *compiled_charset_name(uint charset_number);
 #define my_to_lower	(default_charset_info->to_lower)
 #define my_sort_order	(default_charset_info->sort_order)
 
-#ifndef __WIN__
 #define	_toupper(c)	(char) my_to_upper[(uchar) (c)]
 #define	_tolower(c)	(char) my_to_lower[(uchar) (c)]
 #define toupper(c)	(char) my_to_upper[(uchar) (c)]
@@ -110,8 +126,6 @@ extern const char *compiled_charset_name(uint charset_number);
 #undef ctype
 #endif /* ctype */
 
-#endif	/* __WIN__ */
-
 #define	my_isalpha(s, c)  (((s)->ctype+1)[(uchar) (c)] & (_U | _L))
 #define	my_isupper(s, c)  (((s)->ctype+1)[(uchar) (c)] & _U)
 #define	my_islower(s, c)  (((s)->ctype+1)[(uchar) (c)] & _L)

mysql-test/r/join.result

@@ -186,3 +186,25 @@ t3.CanRead='1' AND t3.Active='1';
 COUNT(t1.Title)
 1
 drop table t1,t2,t3;
+CREATE TABLE t1 (
+t1_id int(11) default NULL,
+t2_id int(11) default NULL,
+type enum('Cost','Percent') default NULL,
+cost_unit enum('Cost','Unit') default NULL,
+min_value double default NULL,
+max_value double default NULL,
+t3_id int(11) default NULL,
+item_id int(11) default NULL
+) TYPE=MyISAM;
+INSERT INTO t1 VALUES (12,5,'Percent','Cost',-1,0,-1,-1),(14,4,'Percent','Cost',-1,0,-1,-1),(18,5,'Percent','Cost',-1,0,-1,-1),(19,4,'Percent','Cost',-1,0,-1,-1),(20,5,'Percent','Cost',100,-1,22,291),(21,5,'Percent','Cost',100,-1,18,291),(22,1,'Percent','Cost',100,-1,6,291),(23,1,'Percent','Cost',100,-1,21,291),(24,1,'Percent','Cost',100,-1,9,291),(25,1,'Percent','Cost',100,-1,4,291),(26,1,'Percent','Cost',100,-1,20,291),(27,4,'Percent','Cost',100,-1,7,202),(28,1,'Percent','Cost',50,-1,-1,137),(29,2,'Percent','Cost',100,-1,4,354),(30,2,'Percent','Cost',100,-1,9,137),(93,2,'Cost','Cost',-1,10000000,-1,-1);
+CREATE TABLE t2 (
+id int(10) unsigned NOT NULL auto_increment,
+name varchar(255) default NULL,
+PRIMARY KEY  (id)
+) TYPE=MyISAM;
+INSERT INTO t2 VALUES (1,'s1'),(2,'s2'),(3,'s3'),(4,'s4'),(5,'s5');
+select t1.*, t2.*  from t1, t2 where t2.id=t1.t2_id limit 2;
+t1_id	t2_id	type	cost_unit	min_value	max_value	t3_id	item_id	id	name
+22	1	Percent	Cost	100	-1	6	291	1	s1
+23	1	Percent	Cost	100	-1	21	291	1	s1
+drop table t1,t2;

sql/mysqld.cc

@@ -856,11 +856,21 @@ static void set_user(const char *user)
   if (!strcmp(user,"root"))
     return;				// Avoid problem with dynamic libraries
 
+  uid_t uid;
   if (!(ent = getpwnam(user)))
+  {
+    // allow a numeric uid to be used
+    const char *pos;
+    for (pos=user; isdigit(*pos); pos++) ;
+    if (*pos)					// Not numeric id
     {
       fprintf(stderr,"Fatal error: Can't change to run as user '%s' ;  Please check that the user exists!\n",user);
       unireg_abort(1);
     }
+    uid=atoi(user);				// Use numberic uid
+  }
+  else
+  {
 #ifdef HAVE_INITGROUPS
     initgroups((char*) user,ent->pw_gid);
 #endif
@@ -869,7 +879,10 @@ static void set_user(const char *user)
       sql_perror("setgid");
       unireg_abort(1);
     }
-  if (setuid(ent->pw_uid) == -1)
+    uid=ent->pw_uid;
+  }
+
+  if (setuid(uid) == -1)
   {
     sql_perror("setuid");
     unireg_abort(1);

sql/sql_parse.cc

@@ -120,7 +120,8 @@ inline bool end_active_trans(THD *thd)
 static HASH hash_user_connections;
 extern  pthread_mutex_t LOCK_user_conn;
 
-static int get_or_create_user_conn(THD *thd, const char *user, const char *host,
+static int get_or_create_user_conn(THD *thd, const char *user,
+				   const char *host,
 				   uint max_questions) 
 {
   int return_val=0;
@@ -134,14 +135,13 @@ static int get_or_create_user_conn(THD *thd, const char *user, const char *host,
   temp_len= (uint) (strxnmov(temp_user, sizeof(temp_user)-1, user, "@", host,
 			     NullS) - temp_user);
   (void) pthread_mutex_lock(&LOCK_user_conn);
-  uc = (struct  user_conn *) hash_search(&hash_user_connections,
-					 (byte*) temp_user, temp_len);
-  if (!uc)
+  if (!(uc = (struct  user_conn *) hash_search(&hash_user_connections,
+					       (byte*) temp_user, temp_len)))
   {
-    uc= ((struct user_conn*)
+    /* First connection for user; Create a user connection object */
+    if (!(uc= ((struct user_conn*)
 	       my_malloc(sizeof(struct user_conn) + temp_len+1,
-		   MYF(MY_WME)));
-    if (!uc)
+			 MYF(MY_WME)))
       {
       send_error(&current_thd->net, 0, NullS);	// Out of memory
       return_val=1;
@@ -280,9 +280,6 @@ static int check_for_max_user_connections(UC *uc)
 {
   int error=0;
   DBUG_ENTER("check_for_max_user_connections");
-//  DBUG_PRINT("enter",("user: '%s'  host: '%s'", user, host));
-
-  DBUG_ASSERT(uc != 0);
   
   if (max_user_connections <=  (uint) uc->connections) 
   {
@@ -303,8 +300,6 @@ static void decrease_user_connections(UC *uc)
     return;
 
   DBUG_ENTER("decrease_user_connections");
-  DBUG_ASSERT(uc != 0);
-//  DBUG_PRINT("enter",("user: '%s'  host: '%s'", user, host));
 
   if (!--uc->connections && !mqh_used)
   {
@@ -326,6 +321,10 @@ void free_max_user_conn(void)
 /*
   Check if maximum queries per hour limit has been reached
   returns 0 if OK.
+
+  In theory we would need a mutex in the UC structure for this to be 100 %
+  safe, but as the worst scenario is that we would miss counting a couple of
+  queries, this isn't critical.
 */
 
 static bool check_mqh(THD *thd)
@@ -335,15 +334,14 @@ static bool check_mqh(THD *thd)
   UC *uc=thd->user_connect;
   DBUG_ASSERT(uc != 0);
 
-  /* TODO: Add username + host to THD for faster execution */
   bool my_start = thd->start_time != 0;
   time_t check_time = (my_start) ?  thd->start_time : time(NULL);
   if (check_time  - uc->intime >= 3600)
   {
-//    (void) pthread_mutex_lock(&LOCK_user_conn);
-    uc->questions=(uint) my_start;
+    (void) pthread_mutex_lock(&LOCK_user_conn);
+    uc->questions=1;
     uc->intime=check_time;
-//    (void) pthread_mutex_unlock(&LOCK_user_conn);
+    (void) pthread_mutex_unlock(&LOCK_user_conn);
   }
   else if (uc->max_questions && ++(uc->questions) > uc->max_questions)
   {
@@ -357,27 +355,22 @@ end:
   DBUG_RETURN(error);
 }
 
-static void reset_mqh(THD *thd,LEX_USER *lu, uint mq)
+
+static void reset_mqh(THD *thd, LEX_USER *lu, uint mq)
 {
-  char user[USERNAME_LENGTH+1];
-  char host[USERNAME_LENGTH+1];
-  char *where;
 
+  (void) pthread_mutex_lock(&LOCK_user_conn);
   if (lu)  // for GRANT 
   {
     UC *uc;
-    uint temp_len;
+    uint temp_len=lu->user.length+lu->host.length+2;
     char temp_user[USERNAME_LENGTH+HOSTNAME_LENGTH+2];
 
-    memcpy(user,lu->user.str,lu->user.length);
-    user[lu->user.length]='\0';
-    memcpy(host,lu->host.str,lu->host.length);
-    host[lu->host.length]='\0';
-    temp_len= (uint) (strxnmov(temp_user, sizeof(temp_user)-1, user, "@", host,
-			     NullS) - temp_user);
-    uc = (struct  user_conn *) hash_search(&hash_user_connections,
-					 (byte*) temp_user, temp_len);
-    if (uc)
+    memcpy(temp_user,lu->user.str,lu->user.length);
+    memcpy(temp_user+lu->user.length+1,lu->host.str,lu->host.length);
+    temp_user[lu->user.length]=temp_user[temp_len-1]=0;
+    if ((uc = (struct  user_conn *) hash_search(&hash_user_connections,
+						(byte*) temp_user, temp_len)))
     {
       uc->questions=0;
       uc->max_questions=mq;
@@ -385,21 +378,20 @@ static void reset_mqh(THD *thd,LEX_USER *lu, uint mq)
   }
   else // for FLUSH PRIVILEGES
   {
-    (void) pthread_mutex_lock(&LOCK_user_conn);
-    for (uint idx=0;idx<hash_user_connections.records;idx++)
+    for (uint idx=0;idx < hash_user_connections.records; idx++)
     {
-      HASH_LINK *data=dynamic_element(&hash_user_connections.array,idx,HASH_LINK*);
-      UC *uc=(struct  user_conn *)data->data;
+      char user[USERNAME_LENGTH+1];
+      char *where;
+      UC *uc=(struct user_conn *) hash_element(&hash_element, idx);
       where=strchr(uc->user,'@');
-      memcpy(user,uc->user,where - uc->user);
-      user[where-uc->user]='\0'; where++;
-      strcpy(host,where);
-      uc->max_questions=get_mqh(user,host);
+      strmake(user,uc->user,where - uc->user);
+      uc->max_questions=get_mqh(user,where+1);
     }
-    (void) pthread_mutex_unlock(&LOCK_user_conn);
   }
+  (void) pthread_mutex_unlock(&LOCK_user_conn);
 }
 
+
 /*
   Check connnetion and get priviliges
   Returns 0 on ok, -1 < if error is given > 0 on error.
@@ -834,8 +826,10 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 {
   NET *net= &thd->net;
   bool	error=0;
-  // commands which will always take a long time should be marked with
-  // this so that they will not get logged to the slow query log
+  /*
+    Commands which will always take a long time should be marked with
+    this so that they will not get logged to the slow query log
+  */
   bool slow_command=FALSE;
   DBUG_ENTER("dispatch_command");
 
@@ -913,7 +907,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
       break;
     }
     if (max_connections && save_uc)
-      decrease_user_connections (save_uc);
+      decrease_user_connections(save_uc);
     x_free((gptr) save_db);
     x_free((gptr) save_user);
     thd->password=test(passwd[0]);
@@ -948,8 +942,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
     DBUG_PRINT("query",("%s",thd->query));
     if (thd->user_connect && check_mqh(thd))
     {
-      error = TRUE;
-      net->error = 0;
+      error = TRUE;				// Abort client
+      net->error = 0;				// Don't give abort message
       break;
     }
     /* thd->query_length is set by mysql_parse() */
@@ -1072,11 +1066,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
       else
 	send_eof(net);
       if (mqh_used)
-      {
-	if (hash_user_connections.array.buffer == 0)
-	  init_max_user_conn();
-	reset_mqh(thd,(LEX_USER *)NULL,0);
-      }
+	reset_mqh(thd,(LEX_USER *) NULL, 0);
       break;
     }
   case COM_SHUTDOWN:
@@ -2306,17 +2296,12 @@ mysql_execute_command(void)
 	  Query_log_event qinfo(thd, thd->query);
 	  mysql_bin_log.write(&qinfo);
 	}
-	if (mqh_used)
+	if (mqh_used && lex->mqh)
 	{
-	  if (hash_user_connections.array.buffer == 0)
-	    init_max_user_conn();
-	  if (lex->mqh)
-	  {
-	    List_iterator <LEX_USER> str_list (lex->users_list);
-	    LEX_USER *Str;
-	    str_list.rewind();
-	    reset_mqh(thd,str_list++,lex->mqh);
-	  }
+	  List_iterator <LEX_USER> str_list(lex->users_list);
+	  LEX_USER *user;
+	  while ((user=str_list++))
+	    reset_mqh(thd,user,lex->mqh);
 	}
       }
     }