Merge work:/home/bk/mysql

into mysql.sashanet.com:/home/sasha/src/bk/mysql


sql/slave.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged

repl-tests/test-dump/run.test

@@ -1,4 +1,11 @@
 source ../include/master-slave.inc;
+connection slave;
+!slave stop;
+flush slave;
+connection master;
+flush master;
+connection slave;
+slave start;
 connection master;
 use test;
 drop table if exists words;
@@ -7,6 +14,7 @@ load data infile '/usr/dict/words' into table words;
 drop table if exists words1;
 create table words1 (word char(20) not null);
 load data infile '/usr/dict/words' into table words1;
+sleep 5;
 connection slave;
 use test;
 drop table if exists words;

sql/Makefile.am

@@ -48,7 +48,7 @@ noinst_HEADERS =	item.h item_func.h item_sum.h item_cmpfunc.h \
 			opt_range.h \
 			sql_select.h structs.h table.h sql_udf.h hash_filo.h\
 			lex.h lex_symbol.h sql_acl.h sql_crypt.h md5.h \
-                        log_event.h mini_client.h
+                        log_event.h mini_client.h sql_repl.h
 mysqld_SOURCES =	sql_lex.cc \
 			item.cc item_sum.cc item_buff.cc item_func.cc \
 			item_cmpfunc.cc item_strfunc.cc item_timefunc.cc \
@@ -69,7 +69,7 @@ mysqld_SOURCES =	sql_lex.cc \
 			sql_db.cc sql_table.cc sql_rename.cc sql_crypt.cc \
 			sql_load.cc mf_iocache.cc field_conv.cc sql_show.cc \
 			sql_udf.cc sql_analyse.cc sql_analyse.h sql_cache.cc \
-			slave.cc \
+			slave.cc sql_repl.cc \
 			md5.c log_event.cc mini_client.cc mini_client_errors.c
 gen_lex_hash_SOURCES =	gen_lex_hash.cc
 gen_lex_hash_LDADD =	$(LDADD) $(CXXLDFLAGS)

sql/log_event.cc

@@ -22,16 +22,6 @@
 #include  "mysql_priv.h"
 #endif /* MYSQL_CLIENT */
 
-#define LOG_EVENT_HEADER_LEN 9
-#define QUERY_HEADER_LEN     (sizeof(uint32) + sizeof(uint32) + sizeof(uchar))
-#define LOAD_HEADER_LEN      (sizeof(uint32) + sizeof(uint32) + \
-  + sizeof(uint32) + 2 + sizeof(uint32))
-#define EVENT_LEN_OFFSET     5
-#define EVENT_TYPE_OFFSET    4
-#define MAX_EVENT_LEN        4*1024*1024 
-#define QUERY_EVENT_OVERHEAD  LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN
-#define ROTATE_EVENT_OVERHEAD LOG_EVENT_HEADER_LEN
-#define LOAD_EVENT_OVERHEAD   (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN+sizeof(sql_ex_info))
 
 static void pretty_print_char(FILE* file, int c)
 {
@@ -71,6 +61,8 @@ int Log_event::write_header(FILE* file)
   int4store(pos, when); // timestamp
   pos += 4;
   *pos++ = get_type_code(); // event type code
+  int4store(pos, server_id);
+  pos += 4;
   int4store(pos, get_data_size() + LOG_EVENT_HEADER_LEN);
   pos += 4;
   return (my_fwrite(file, (byte*) buf, (uint) (pos - buf),
@@ -106,16 +98,19 @@ int Log_event::read_log_event(FILE* file, String* packet)
 Log_event* Log_event::read_log_event(FILE* file)
 {
   time_t timestamp;
-  char buf[5];
+  uint32 server_id;
+  
+  char buf[LOG_EVENT_HEADER_LEN-4];
   if (my_fread(file, (byte *) buf, sizeof(buf), MY_NABP))
     return NULL;
   timestamp = uint4korr(buf);
+  server_id = uint4korr(buf + 5);
   
   switch(buf[EVENT_TYPE_OFFSET])
   {
   case QUERY_EVENT:
   {
-    Query_log_event* q = new Query_log_event(file, timestamp);
+    Query_log_event* q = new Query_log_event(file, timestamp, server_id);
     if (!q->query)
     {
       delete q;
@@ -127,7 +122,7 @@ Log_event* Log_event::read_log_event(FILE* file)
   
   case LOAD_EVENT:
   {
-    Load_log_event* l = new Load_log_event(file, timestamp);
+    Load_log_event* l = new Load_log_event(file, timestamp, server_id);
     if (!l->table_name)
     {
       delete l;
@@ -140,7 +135,7 @@ Log_event* Log_event::read_log_event(FILE* file)
 
   case ROTATE_EVENT:
   {
-    Rotate_log_event* r = new Rotate_log_event(file, timestamp);
+    Rotate_log_event* r = new Rotate_log_event(file, timestamp, server_id);
     if (!r->new_log_ident)
     {
       delete r;
@@ -152,7 +147,7 @@ Log_event* Log_event::read_log_event(FILE* file)
 
   case INTVAR_EVENT:
   {
-    Intvar_log_event* e = new Intvar_log_event(file, timestamp);
+    Intvar_log_event* e = new Intvar_log_event(file, timestamp, server_id);
     if (e->type == INVALID_INT_EVENT)
     {
       delete e;
@@ -162,8 +157,8 @@ Log_event* Log_event::read_log_event(FILE* file)
     return e;
   }
   
-  case START_EVENT: return new Start_log_event(file, timestamp);
+  case START_EVENT: return new Start_log_event(file, timestamp, server_id);
-  case STOP_EVENT: return new Stop_log_event(file, timestamp);
+  case STOP_EVENT: return new Stop_log_event(file, timestamp, server_id);
   default: return NULL;
   }
 
@@ -221,12 +216,23 @@ Log_event* Log_event::read_log_event(const char* buf, int max_buf)
   return NULL;
 }
 
-void Log_event::print_timestamp(FILE* file)
+void Log_event::print_header(FILE* file)
+{
+  fputc('#', file);
+  print_timestamp(file);
+  fprintf(file, " server id  %d ", server_id); 
+}
+
+void Log_event::print_timestamp(FILE* file, time_t* ts = 0)
 {
     struct tm tm_tmp;
-    localtime_r(&when,&tm_tmp);
+    if(!ts)
+      {
+        ts = &when;
+      }
+    localtime_r(ts,&tm_tmp);
 
-    fprintf(file,"#%02d%02d%02d %2d:%02d:%02d",
+    fprintf(file,"%02d%02d%02d %2d:%02d:%02d",
 	    tm_tmp.tm_year % 100,
 	    tm_tmp.tm_mon+1,
 	    tm_tmp.tm_mday,
@@ -241,8 +247,11 @@ void Start_log_event::print(FILE* file, bool short_form)
   if (short_form)
     return;
 
-  print_timestamp(file);
+  print_header(file);
-  fprintf(file, "\tStart\n");
+  fprintf(file, "\tStart: binlog v %d, server v %s created ", binlog_version,
+	  server_version);
+  print_timestamp(file, (time_t*)&created);
+  fputc('\n', file);
   fflush(file);
 }
 
@@ -251,7 +260,7 @@ void Stop_log_event::print(FILE* file, bool short_form)
   if (short_form)
     return;
 
-  print_timestamp(file);
+  print_header(file);
   fprintf(file, "\tStop\n");
   fflush(file);
 }
@@ -261,7 +270,7 @@ void Rotate_log_event::print(FILE* file, bool short_form)
   if (short_form)
     return;
 
-  print_timestamp(file);
+  print_header(file);
   fprintf(file, "\tRotate to ");
   if (new_log_ident)
     my_fwrite(file, (byte*) new_log_ident, (uint)ident_len, 
@@ -270,8 +279,9 @@ void Rotate_log_event::print(FILE* file, bool short_form)
   fflush(file);
 }
 
-Rotate_log_event::Rotate_log_event(FILE* file, time_t when_arg):
+Rotate_log_event::Rotate_log_event(FILE* file, time_t when_arg,
-  Log_event(when_arg),new_log_ident(NULL),alloced(0)
+				   uint32 server_id):
+  Log_event(when_arg, 0, 0, server_id),new_log_ident(NULL),alloced(0)
 {
   char *tmp_ident;
   char buf[4];
@@ -298,6 +308,14 @@ Rotate_log_event::Rotate_log_event(FILE* file, time_t when_arg):
   alloced = 1;
 }
 
+Start_log_event::Start_log_event(const char* buf) :Log_event(buf)
+{
+  buf += EVENT_LEN_OFFSET + 4; // skip even length
+  binlog_version = uint2korr(buf);
+  memcpy(server_version, buf + 2, sizeof(server_version));
+  created = uint4korr(buf + 2 + sizeof(server_version));
+}
+
 Rotate_log_event::Rotate_log_event(const char* buf, int max_buf):
   Log_event(buf),new_log_ident(NULL),alloced(0)
 {
@@ -322,8 +340,9 @@ int Rotate_log_event::write_data(FILE* file)
   return 0;
 }
 
-Query_log_event::Query_log_event(FILE* file, time_t when_arg):
+Query_log_event::Query_log_event(FILE* file, time_t when_arg,
-  Log_event(when_arg),data_buf(0),query(NULL),db(NULL)
+				 uint32 server_id):
+  Log_event(when_arg,0,0,server_id),data_buf(0),query(NULL),db(NULL)
 {
   char buf[QUERY_HEADER_LEN + 4];
   ulong data_len;
@@ -382,7 +401,7 @@ void Query_log_event::print(FILE* file, bool short_form)
 {
   if (!short_form)
   {
-    print_timestamp(file);
+    print_header(file);
     fprintf(file, "\tQuery\tthread_id=%lu\texec_time=%lu\n",
 	    (ulong) thread_id, (ulong) exec_time);
   }
@@ -414,8 +433,9 @@ int Query_log_event::write_data(FILE* file)
   return 0;
 }
 
-Intvar_log_event:: Intvar_log_event(FILE* file, time_t when_arg)
+Intvar_log_event:: Intvar_log_event(FILE* file, time_t when_arg,
-  :Log_event(when_arg), type(INVALID_INT_EVENT)
+				    uint32 server_id)
+  :Log_event(when_arg,0,0,server_id), type(INVALID_INT_EVENT)
 {
   my_fseek(file, 4L, MY_SEEK_CUR, MYF(MY_WME)); // skip the event length
   char buf[9];
@@ -444,7 +464,7 @@ void Intvar_log_event::print(FILE* file, bool short_form)
   char llbuff[22];
   if(!short_form)
   {
-    print_timestamp(file);
+    print_header(file);
     fprintf(file, "\tIntvar\n");
   }
 
@@ -493,8 +513,9 @@ int Load_log_event::write_data(FILE* file __attribute__((unused)))
   return 0;
 }
 
-Load_log_event::Load_log_event(FILE* file, time_t when):
+Load_log_event::Load_log_event(FILE* file, time_t when, uint32 server_id):
-  Log_event(when),data_buf(0),num_fields(0),fields(0),field_lens(0),field_block_len(0),
+  Log_event(when,0,0,server_id),data_buf(0),num_fields(0),
+  fields(0),field_lens(0),field_block_len(0),
   table_name(0),db(0),fname(0)
 							
 {
@@ -539,7 +560,8 @@ Load_log_event::Load_log_event(FILE* file, time_t when):
 }
 
 Load_log_event::Load_log_event(const char* buf, int max_buf):
-  Log_event(when),data_buf(0),num_fields(0),fields(0),field_lens(0),field_block_len(0),
+  Log_event(when,0,0,server_id),data_buf(0),num_fields(0),fields(0),
+  field_lens(0),field_block_len(0),
   table_name(0),db(0),fname(0)
 							     
 {
@@ -594,7 +616,7 @@ void Load_log_event::print(FILE* file, bool short_form)
 {
   if (!short_form)
   {
-    print_timestamp(file);
+    print_header(file);
     fprintf(file, "\tQuery\tthread_id=%d\texec_time=%ld\n",
 	    thread_id, exec_time);
   }

sql/log_event.h

@@ -28,6 +28,18 @@
 #define LOG_READ_MEM    -5
 
 #define LOG_EVENT_OFFSET 4
+#define BINLOG_VERSION    1
+
+#define LOG_EVENT_HEADER_LEN 13
+#define QUERY_HEADER_LEN     (sizeof(uint32) + sizeof(uint32) + sizeof(uchar))
+#define LOAD_HEADER_LEN      (sizeof(uint32) + sizeof(uint32) + \
+  + sizeof(uint32) + 2 + sizeof(uint32))
+#define EVENT_LEN_OFFSET     9
+#define EVENT_TYPE_OFFSET    4
+#define MAX_EVENT_LEN        4*1024*1024 
+#define QUERY_EVENT_OVERHEAD  LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN
+#define ROTATE_EVENT_OVERHEAD LOG_EVENT_HEADER_LEN
+#define LOAD_EVENT_OVERHEAD   (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN+sizeof(sql_ex_info))
 
 
 enum Log_event_type { START_EVENT = 1, QUERY_EVENT =2,
@@ -40,25 +52,32 @@ enum Int_event_type { INVALID_INT_EVENT = 0, LAST_INSERT_ID_EVENT = 1, INSERT_ID
 class String;
 #endif
 
+extern uint32 server_id;
+
 class Log_event
 {
 public:
   time_t when;
   ulong exec_time;
-  int valid_exec_time; // if false, the exec time setting is bogus and needs
+  int valid_exec_time; // if false, the exec time setting is bogus 
+  uint32 server_id;
 
   int write(FILE* file);
   int write_header(FILE* file);
   virtual int write_data(FILE* file __attribute__((unused))) { return 0; }
   virtual Log_event_type get_type_code() = 0;
   Log_event(time_t when_arg, ulong exec_time_arg = 0,
-	    int valid_exec_time_arg = 0): when(when_arg),
+	    int valid_exec_time_arg = 0, uint32 server_id = 0): when(when_arg),
-    exec_time(exec_time_arg), valid_exec_time(valid_exec_time_arg) {}
+    exec_time(exec_time_arg), valid_exec_time(valid_exec_time_arg)
+  {
+    if(!server_id) this->server_id = ::server_id;
+    else this->server_id = server_id;
+  }
 
-  Log_event(const char* buf): valid_exec_time(1)
+  Log_event(const char* buf): valid_exec_time(0)
   {
    when = uint4korr(buf);
-   exec_time = uint4korr(buf + 5);
+   server_id = uint4korr(buf + 5);
   }
 
   virtual ~Log_event() {}
@@ -66,7 +85,8 @@ public:
   virtual int get_data_size() { return 0;}
   virtual void print(FILE* file, bool short_form = 0) = 0;
 
-  void print_timestamp(FILE* file);
+  void print_timestamp(FILE* file, time_t *ts = 0);
+  void print_header(FILE* file);
 
   static Log_event* read_log_event(FILE* file);
   static Log_event* read_log_event(const char* buf, int max_buf);
@@ -93,7 +113,7 @@ public:
 #if !defined(MYSQL_CLIENT)
   THD* thd;
   Query_log_event(THD* thd_arg, const char* query_arg):
-    Log_event(thd_arg->start_time), data_buf(0),
+    Log_event(thd_arg->start_time,0,0,thd_arg->server_id), data_buf(0),
     query(query_arg),  db(thd_arg->db), q_len(thd_arg->query_length),
     thread_id(thd_arg->thread_id), thd(thd_arg)
   {
@@ -105,7 +125,7 @@ public:
   }
 #endif
 
-  Query_log_event(FILE* file, time_t when);
+  Query_log_event(FILE* file, time_t when, uint32 server_id);
   Query_log_event(const char* buf, int max_buf);
   ~Query_log_event()
   {
@@ -244,7 +264,7 @@ public:
   void set_fields(List<Item> &fields);
 #endif
 
-  Load_log_event(FILE* file, time_t when);
+  Load_log_event(FILE* file, time_t when, uint32 server_id);
   Load_log_event(const char* buf, int max_buf);
   ~Load_log_event()
   {
@@ -269,21 +289,52 @@ public:
   void print(FILE* file, bool short_form = 0);
 };
 
+extern char server_version[50];
 
 class Start_log_event: public Log_event
 {
 public:
-  Start_log_event() :Log_event(time(NULL))
+  uint16 binlog_version;
-  {}
+  char server_version[50];
-  Start_log_event(FILE* file, time_t when_arg) :Log_event(when_arg)
+  uint32 created;
+  
+  Start_log_event() :Log_event(time(NULL)),binlog_version(BINLOG_VERSION)
   {
+    created = when;
+    memcpy(server_version, ::server_version, sizeof(server_version));
+  }
+  Start_log_event(FILE* file, time_t when_arg, uint32 server_id) :
+    Log_event(when_arg, 0, 0, server_id)
+  {
+    char buf[sizeof(server_version) + sizeof(binlog_version) +
+	    sizeof(created)];
     my_fseek(file, 4L, MY_SEEK_CUR, MYF(MY_WME)); // skip the event length
+    if (my_fread(file, (byte*) buf, sizeof(buf), MYF(MY_NABP | MY_WME)))
+      return;				
+    binlog_version = uint2korr(buf);
+    memcpy(server_version, buf + 2, sizeof(server_version));
+    created = uint4korr(buf + 2 + sizeof(server_version));
   }
-  Start_log_event(const char* buf) :Log_event(buf)
+  Start_log_event(const char* buf);
-  {
+  
-  }
   ~Start_log_event() {}
   Log_event_type get_type_code() { return START_EVENT;}
+  int write_data(FILE* file)
+  {
+    if(my_fwrite(file, (byte*) &binlog_version, sizeof(binlog_version),
+		 MYF(MY_NABP | MY_WME)) ||
+       my_fwrite(file, (byte*) server_version, sizeof(server_version),
+		 MYF(MY_NABP | MY_WME)) ||
+       my_fwrite(file, (byte*) &created, sizeof(created),
+		 MYF(MY_NABP | MY_WME)))
+      return -1;
+    return 0;
+  }
+  int get_data_size()
+  {
+    return sizeof(binlog_version) + sizeof(server_version) +
+      sizeof(created);
+  }
   void print(FILE* file, bool short_form = 0);
 };
 
@@ -295,7 +346,7 @@ public:
   Intvar_log_event(uchar type_arg, ulonglong val_arg)
     :Log_event(time(NULL)),val(val_arg),type(type_arg)
   {}
-  Intvar_log_event(FILE* file, time_t when);
+  Intvar_log_event(FILE* file, time_t when, uint32 server_id);
   Intvar_log_event(const char* buf);
   ~Intvar_log_event() {}
   Log_event_type get_type_code() { return INTVAR_EVENT;}
@@ -311,7 +362,8 @@ class Stop_log_event: public Log_event
 public:
   Stop_log_event() :Log_event(time(NULL))
   {}
-  Stop_log_event(FILE* file, time_t when_arg): Log_event(when_arg)
+  Stop_log_event(FILE* file, time_t when_arg, uint32 server_id):
+    Log_event(when_arg,0,0,server_id)
   {
     my_fseek(file, 4L, MY_SEEK_CUR, MYF(MY_WME)); // skip the event length
   }
@@ -337,7 +389,7 @@ public:
     alloced(0)
   {}
   
-  Rotate_log_event(FILE* file, time_t when) ;
+  Rotate_log_event(FILE* file, time_t when, uint32 server_id) ;
   Rotate_log_event(const char* buf, int max_buf);
   ~Rotate_log_event()
   {

sql/mysql_priv.h

@@ -437,6 +437,7 @@ void sql_perror(const char *message);
 void sql_print_error(const char *format,...)
 	        __attribute__ ((format (printf, 1, 2)));
 
+extern uint32 server_id;
 extern char mysql_data_home[2],server_version[50],max_sort_char,
             mysql_real_data_home[];
 extern my_string mysql_unix_port,mysql_tmpdir;
@@ -463,7 +464,7 @@ extern pthread_mutex_t LOCK_mysql_create_db,LOCK_Acl,LOCK_open,
        LOCK_thread_count,LOCK_mapped_file,LOCK_user_locks, LOCK_status,
        LOCK_grant, LOCK_error_log, LOCK_delayed_insert,
        LOCK_delayed_status, LOCK_delayed_create, LOCK_crypt, LOCK_timezone,
-       LOCK_binlog_update, LOCK_slave;
+       LOCK_binlog_update, LOCK_slave, LOCK_server_id;
 extern pthread_cond_t COND_refresh,COND_thread_count, COND_binlog_update,
   COND_slave_stopped;
 extern pthread_attr_t connection_attrib;

sql/mysqlbinlog.cc

@@ -29,6 +29,8 @@
 
 #define CLIENT_CAPABILITIES	(CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG | CLIENT_LOCAL_FILES)
 
+char server_version[50];
+uint32 server_id = 0;
 
 // needed by net_serv.c
 ulong bytes_sent = 0L, bytes_received = 0L;
@@ -268,8 +270,9 @@ static void dump_remote_log_entries(const char* logname)
   int4store(buf, position);
   int2store(buf + 4, binlog_flags);
   len = (uint) strlen(logname);
-  memcpy(buf + 6, logname,len);
+  int4store(buf + 6, 0);
-  if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 6, 1))
+  memcpy(buf + 10, logname,len);
+  if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 10, 1))
     die("Error sending the log dump command");
   
   for(;;)

sql/mysqld.cc

@@ -142,6 +142,7 @@ static uint handler_count;
 static bool opt_console=0;
 #endif
 
+static bool opt_skip_slave_start = 0; // if set, slave is not autostarted
 static ulong opt_specialflag=SPECIAL_ENGLISH;
 static my_socket unix_sock= INVALID_SOCKET,ip_sock= INVALID_SOCKET;
 static ulong back_log,connect_timeout,concurrency;
@@ -180,6 +181,7 @@ I_List<i_string> replicate_do_db, replicate_ignore_db;
 // allow the user to tell us which db to replicate and which to ignore
 I_List<i_string> binlog_do_db, binlog_ignore_db;
 
+uint32 server_id = 0; // server id for replication
 uint mysql_port;
 uint test_flags, select_errors=0, dropping_tables=0,ha_open_options=0;
 uint volatile thread_count=0, thread_running=0, kill_cached_threads=0,
@@ -246,7 +248,7 @@ pthread_mutex_t LOCK_mysql_create_db, LOCK_Acl, LOCK_open, LOCK_thread_count,
 		LOCK_error_log,
 		LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
 		LOCK_flush, LOCK_crypt, LOCK_bytes_sent, LOCK_bytes_received,
-                LOCK_binlog_update, LOCK_slave;
+                LOCK_binlog_update, LOCK_slave, LOCK_server_id;
 
 pthread_cond_t COND_refresh,COND_thread_count,COND_flush, COND_binlog_update,
   COND_slave_stopped;
@@ -1393,6 +1395,7 @@ int main(int argc, char **argv)
   (void) pthread_mutex_init(&LOCK_timezone,NULL);
   (void) pthread_mutex_init(&LOCK_binlog_update, NULL);
   (void) pthread_mutex_init(&LOCK_slave, NULL);
+  (void) pthread_mutex_init(&LOCK_server_id, NULL);
   (void) pthread_cond_init(&COND_binlog_update, NULL);
   (void) pthread_cond_init(&COND_slave_stopped, NULL);
 
@@ -1482,17 +1485,23 @@ int main(int argc, char **argv)
 	     LOG_NEW);
   if (opt_bin_log)
   {
-    if (!opt_bin_logname)
+    if(server_id)
-    {
+      {
-      char tmp[FN_REFLEN];
+	if (!opt_bin_logname)
-      strnmov(tmp,hostname,FN_REFLEN-5);
+	  {
-      strmov(strcend(tmp,'.'),"-bin");
+	    char tmp[FN_REFLEN];
-      opt_bin_logname=my_strdup(tmp,MYF(MY_WME));
+	    strnmov(tmp,hostname,FN_REFLEN-5);
-    }
+	    strmov(strcend(tmp,'.'),"-bin");
-    mysql_bin_log.set_index_file_name(opt_binlog_index_name);
+	    opt_bin_logname=my_strdup(tmp,MYF(MY_WME));
-    open_log(&mysql_bin_log, hostname, opt_bin_logname, "-bin",
+	  }
-	     LOG_BIN);
+	mysql_bin_log.set_index_file_name(opt_binlog_index_name);
+	open_log(&mysql_bin_log, hostname, opt_bin_logname, "-bin",
+		 LOG_BIN);
+      }
+    else
+      sql_print_error("Server id is not set - binary logging disabled");
   }
+  
   if (opt_slow_log)
     open_log(&mysql_slow_log, hostname, opt_slow_logname, "-slow.log",
 	     LOG_NORMAL);
@@ -1596,10 +1605,15 @@ int main(int argc, char **argv)
   // slave thread
   if(master_host)
   {
-    pthread_t hThread;
+    if(server_id)
-    if(pthread_create(&hThread, &connection_attrib, handle_slave, 0))
+      {
-      sql_print_error("Warning: Can't create thread to handle slave");
+	pthread_t hThread;
-
+	if(!opt_skip_slave_start &&
+	   pthread_create(&hThread, &connection_attrib, handle_slave, 0))
+	  sql_print_error("Warning: Can't create thread to handle slave");
+      }
+    else
+      sql_print_error("Server id is not set, slave thread will not be started");
   }
 
   printf(ER(ER_READY),my_progname,server_version,"");
@@ -2201,7 +2215,8 @@ enum options {
                OPT_REPLICATE_DO_DB,      OPT_REPLICATE_IGNORE_DB, 
                OPT_LOG_SLAVE_UPDATES,    OPT_BINLOG_DO_DB, 
                OPT_BINLOG_IGNORE_DB,     OPT_WANT_CORE,
-	       OPT_SKIP_CONCURRENT_INSERT, OPT_MEMLOCK, OPT_MYISAM_RECOVER
+	       OPT_SKIP_CONCURRENT_INSERT, OPT_MEMLOCK, OPT_MYISAM_RECOVER,
+	       OPT_REPLICATE_REWRITE_DB, OPT_SERVER_ID, OPT_SKIP_SLAVE_START
 };
 
 static struct option long_options[] = {
@@ -2266,8 +2281,11 @@ static struct option long_options[] = {
   {"port",                  required_argument, 0, 'P'},
   {"replicate-do-db",       required_argument, 0, (int) OPT_REPLICATE_DO_DB},
   {"replicate-ignore-db",   required_argument, 0, (int) OPT_REPLICATE_IGNORE_DB},
+  {"replicate-rewrite-db",   required_argument, 0,
+     (int) OPT_REPLICATE_REWRITE_DB},
   {"safe-mode",             no_argument,       0, (int) OPT_SAFE},
   {"socket",                required_argument, 0, (int) OPT_SOCKET},
+  {"server-id",          required_argument, 0, (int)OPT_SERVER_ID},
   {"set-variable",          required_argument, 0, 'O'},
 #ifdef HAVE_BERKELEY_DB
   {"skip-bdb",              no_argument,       0, (int) OPT_BDB_SKIP},
@@ -2280,6 +2298,7 @@ static struct option long_options[] = {
   {"skip-name-resolve",     no_argument,       0, (int) OPT_SKIP_RESOLVE},
   {"skip-new",              no_argument,       0, (int) OPT_SKIP_NEW},
   {"skip-show-database",    no_argument,       0, (int) OPT_SKIP_SHOW_DB},
+  {"skip-slave-start",    no_argument,       0, (int) OPT_SKIP_SLAVE_START},
   {"skip-networking",       no_argument,       0, (int) OPT_SKIP_NETWORKING},
   {"skip-thread-priority",  no_argument,       0, (int) OPT_SKIP_PRIOR},
   {"sql-bin-update-same",   no_argument,       0, (int) OPT_SQL_BIN_UPDATE_SAME},
@@ -2428,6 +2447,7 @@ struct show_var_st init_vars[]= {
   {"port",                    (char*) &mysql_port,                  SHOW_INT},
   {"protocol_version",        (char*) &protocol_version,            SHOW_INT},
   {"record_buffer",           (char*) &my_default_record_cache_size,SHOW_LONG},
+  {"server_id",           (char*) &server_id, SHOW_LONG},
   {"skip_locking",            (char*) &my_disable_locking,          SHOW_MY_BOOL},
   {"skip_networking",         (char*) &opt_disable_networking,      SHOW_BOOL},
   {"skip_show_database",      (char*) &opt_skip_show_db,            SHOW_BOOL},
@@ -2851,6 +2871,9 @@ static void get_options(int argc,char **argv)
       opt_slow_log=1;
       opt_slow_logname=optarg;
       break;
+    case (int)OPT_SKIP_SLAVE_START:
+      opt_skip_slave_start = 1;
+      break;
     case (int) OPT_SKIP_NEW:
       opt_specialflag|= SPECIAL_NO_NEW_FUNC;
       default_table_type=DB_TYPE_ISAM;
@@ -2972,6 +2995,9 @@ static void get_options(int argc,char **argv)
       default_table_type= (enum db_type) type;
       break;
     }
+    case OPT_SERVER_ID:
+      server_id = atoi(optarg);
+      break;
     case OPT_DELAY_KEY_WRITE:
       ha_open_options|=HA_OPEN_DELAY_KEY_WRITE;
       myisam_delay_key_write=1;

sql/slave.cc

@@ -463,15 +463,16 @@ static int safe_sleep(THD* thd, int sec)
 
 static int request_dump(MYSQL* mysql, MASTER_INFO* mi)
 {
-  char buf[FN_REFLEN + 6];
+  char buf[FN_REFLEN + 10];
   int len;
   int binlog_flags = 0; // for now
   char* logname = mi->log_file_name;
   int4store(buf, mi->pos);
   int2store(buf + 4, binlog_flags);
+  int4store(buf + 6, server_id);
   len = (uint) strlen(logname);
-  memcpy(buf + 6, logname,len);
+  memcpy(buf + 10, logname,len);
-  if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 6, 1))
+  if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 10, 1))
 	// something went wrong, so we will just reconnect and retry later
 	// in the future, we should do a better error analysis, but for
 	// now we just fill up the error log :-)
@@ -795,11 +796,17 @@ pthread_handler_decl(handle_slave,arg __attribute__((unused)))
   THD *thd;; // needs to be first for thread_stack
   MYSQL *mysql = NULL ;
 
+  if(!server_id)
+    {
+     sql_print_error("Server id not set, will not start slave");
+     pthread_exit(1);
+    }
+  
   pthread_mutex_lock(&LOCK_slave);
   if(slave_running)
     {
       pthread_mutex_unlock(&LOCK_slave);
-      return 0;  // safety just in case
+      pthread_exit(1);  // safety just in case
     }
   slave_running = 1;
   abort_slave = 0;
@@ -936,7 +943,7 @@ static void safe_reconnect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
   while(!slave_killed(thd) && mc_mysql_reconnect(mysql))
   {
     sql_print_error(
-		    "Slave thread: error connecting to slave:%s, retry in %d sec",
+		    "Slave thread: error connecting to master:%s, retry in %d sec",
 		    mc_mysql_error(mysql), mi->connect_retry);
     safe_sleep(thd, mi->connect_retry);
   }

sql/sql_base.cc

@@ -42,71 +42,6 @@ static void mysql_rm_tmp_tables(void);
 static key_map get_key_map_from_key_list(THD *thd, TABLE *table,
 					 List<String> *index_list);
 
-static int send_file(THD *thd)
-{
-  NET* net = &thd->net;
-  int fd = -1,bytes, error = 1;
-  char fname[FN_REFLEN+1];
-  char buf[IO_SIZE*15];
-  const char *errmsg = 0;
-  int old_timeout;
-  DBUG_ENTER("send_file");
-
-  // the client might be slow loading the data, give him wait_timeout to do
-  // the job
-  old_timeout = thd->net.timeout;
-  thd->net.timeout = thd->inactive_timeout;
-
-  // we need net_flush here because the client will not know it needs to send
-  // us the file name until it has processed the load event entry
-  if (net_flush(net) || my_net_read(net) == packet_error)
-  {
-    errmsg = "Failed reading file name";
-    goto err;
-  }
-
-  fn_format(fname, (char*)net->read_pos + 1, "", "", 4);
-  // this is needed to make replicate-ignore-db
-  if (!strcmp(fname,"/dev/null"))
-    goto end;
-  // TODO: work on the well-known system that does not have a /dev/null :-)
-
-  if ((fd = my_open(fname, O_RDONLY, MYF(MY_WME))) < 0)
-  {
-    errmsg = "Failed on my_open()";
-    goto err;
-  }
-
-  while ((bytes = (int) my_read(fd, (byte*) buf, sizeof(buf),
-				MYF(MY_WME))) > 0)
-  {
-    if (my_net_write(net, buf, bytes))
-    {
-      errmsg = "Failed on my_net_write()";
-      goto err;
-    }
-  }
-
- end:
-  if (my_net_write(net, "", 0) || net_flush(net) ||
-      (my_net_read(net) == packet_error))
-  {
-    errmsg = "failed negotiating file transfer close";
-    goto err;
-  }
-  error = 0;
-
- err:
-  thd->net.timeout = old_timeout;
-  if(fd >= 0)
-    (void) my_close(fd, MYF(MY_WME));
-  if (errmsg)
-  {
-    sql_print_error("failed in send_file() : %s", errmsg);
-    DBUG_PRINT("error", (errmsg));
-  }
-  DBUG_RETURN(error);
-}
 
 static byte *cache_key(const byte *record,uint *length,
 		       my_bool not_used __attribute__((unused)))
@@ -177,228 +112,6 @@ static void check_unused(void)
 #define check_unused()
 #endif
 
-void mysql_binlog_send(THD* thd, char* log_ident, ulong pos, ushort flags)
-{
-  LOG_INFO linfo;
-  char *log_file_name = linfo.log_file_name;
-  char search_file_name[FN_REFLEN];
-  FILE* log = NULL;
-  String* packet = &thd->packet;
-  int error;
-  const char *errmsg = "Unknown error";
-  NET* net = &thd->net;
-
-  DBUG_ENTER("mysql_binlog_send");
-
-  if(!mysql_bin_log.is_open())
-    {
-      errmsg = "Binary log is not open";
-      goto err;
-    }
-
-  if(log_ident[0])
-    mysql_bin_log.make_log_name(search_file_name, log_ident);
-  else
-    search_file_name[0] = 0;
-
-  if(mysql_bin_log.find_first_log(&linfo, search_file_name))
-    {
-      errmsg = "Could not find first log";
-      goto err;
-    }
-  log = my_fopen(log_file_name, O_RDONLY, MYF(MY_WME));
-
-  if(!log)
-    {
-      errmsg = "Could not open log file";
-      goto err;
-    }
-
-  if(my_fseek(log, pos, MY_SEEK_SET, MYF(MY_WME)) == MY_FILEPOS_ERROR )
-    {
-      errmsg = "Error on fseek()";
-      goto err;
-    }
-
-
-  packet->length(0);
-  packet->append("\0", 1); // we need to start a packet with something other than 255
-  // to distiquish it from error
-
-  while(!net->error && net->vio != 0 && !thd->killed)
-    {
-      while(!(error = Log_event::read_log_event(log, packet)))
-	{
-	  if(my_net_write(net, (char*)packet->ptr(), packet->length()) )
-	    {
-	      errmsg = "Failed on my_net_write()";
-	      goto err;
-	    }
-	  DBUG_PRINT("info", ("log event code %d",(*packet)[LOG_EVENT_OFFSET+1] ));
-	  if((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
-	    {
-	      if(send_file(thd))
-		{
-		  errmsg = "failed in send_file()";
-		  goto err;
-		}
-	    }
-	  packet->length(0);
-	  packet->append("\0",1);
-	}
-      if(error != LOG_READ_EOF)
-	{
-	  errmsg = "error reading log event";
-	  goto err;
-	}
-
-      if(!(flags & BINLOG_DUMP_NON_BLOCK) &&  mysql_bin_log.is_active(log_file_name))
-	// block until there is more data in the log
-	// unless non-blocking mode requested
-	{
-	  if(net_flush(net))
-	    {
-	      errmsg = "failed on net_flush()";
-	      goto err;
-	    }
-
-	  // we may have missed the update broadcast from the log
-	  // that has just happened, let's try to catch it if it did
-	  // if we did not miss anything, we just wait for other threads
-	  // to signal us
-          {
-	    pthread_mutex_t *log_lock = mysql_bin_log.get_log_lock();
-	    clearerr(log);
-
-            // tell the kill thread how to wake us up
-	    pthread_mutex_lock(&thd->mysys_var->mutex);
-	    thd->mysys_var->current_mutex = log_lock;
-	    thd->mysys_var->current_cond = &COND_binlog_update;
-	    const char* proc_info = thd->proc_info;
-	    thd->proc_info = "Waiting for update";
-	    pthread_mutex_unlock(&thd->mysys_var->mutex);
-
-	    bool read_packet = 0, fatal_error = 0;
-
-	    pthread_mutex_lock(log_lock); // no one will update the log while we are reading
-	    // now, but we'll be quick and just read one record
-
-
-	    switch(Log_event::read_log_event(log, packet))
-	      {
-	      case 0:
-		read_packet = 1; // we read successfully, so we'll need to send it to the
-		// slave
-		break;
-	      case LOG_READ_EOF:
-	        pthread_cond_wait(&COND_binlog_update, log_lock);
-		break;
-
-	      default:
-		fatal_error = 1;
-		break;
-	      }
-
-	    pthread_mutex_unlock(log_lock);
-
-	    pthread_mutex_lock(&thd->mysys_var->mutex);
-	    thd->mysys_var->current_mutex= 0;
-	    thd->mysys_var->current_cond= 0;
-	    thd->proc_info= proc_info;
-	    pthread_mutex_unlock(&thd->mysys_var->mutex);
-
-	    if(read_packet)
-	    {
-	      if(my_net_write(net, (char*)packet->ptr(), packet->length()) )
-	      {
-		errmsg = "Failed on my_net_write()";
-		goto err;
-	      }
-
-	      if((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
-	      {
-		if(send_file(thd))
-		{
-		  errmsg = "failed in send_file()";
-		  goto err;
-		}
-	      }
-	      packet->length(0);
-	      packet->append("\0",1);
-	      // no need to net_flush because we will get to flush later when
-	      // we hit EOF pretty quick
-	    }
-
-	    if(fatal_error)
-	      {
-		errmsg = "error reading log entry";
-	        goto err;
-	      }
-
-	    clearerr(log);
-	  }
-	}
-      else
-	{
-	  bool loop_breaker = 0; // need this to break out of the for loop from switch
-
-	  switch(mysql_bin_log.find_next_log(&linfo))
-	    {
-	    case LOG_INFO_EOF:
-	      loop_breaker = (flags & BINLOG_DUMP_NON_BLOCK);
-	      break;
-	    case 0:
-	      break;
-	    default:
-	      errmsg = "could not find next log";
-	      goto err;
-	    }
-
-	  if(loop_breaker)
-	   break;
-
-	  (void) my_fclose(log, MYF(MY_WME));
-	  log = my_fopen(log_file_name, O_RDONLY, MYF(MY_WME));
-	  if(!log)
-	    goto err;
-	  // fake Rotate_log event just in case it did not make it to the log
-	  // otherwise the slave make get confused about the offset
-	  {
-	    char header[9];
-	    memset(header, 0, 4); // when does not matter
-	    header[4] = ROTATE_EVENT;
-           char* p = strrchr(log_file_name, FN_LIBCHAR); // find the last slash
-           if(p)
-              p++;
-            else
-              p = log_file_name;
-
-	    uint ident_len = (uint) strlen(p);
-	    ulong event_len = ident_len + sizeof(header);
-	    int4store(header + 5, event_len);
-	    packet->append(header, sizeof(header));
-	    packet->append(p,ident_len);
-	    if(my_net_write(net, (char*)packet->ptr(), packet->length()))
-	      {
-		errmsg = "failed on my_net_write()";
-	        goto err;
-	      }
-	    packet->length(0);
- 	    packet->append("\0",1);
-	  }
-	}
-    }
-
-  (void)my_fclose(log, MYF(MY_WME));
-
-  send_eof(&thd->net);
-  DBUG_VOID_RETURN;
- err:
-  if(log)
-   (void) my_fclose(log, MYF(MY_WME));
-  send_error(&thd->net, 0, errmsg);
-  DBUG_VOID_RETURN;
-}
 
 
 /******************************************************************************

sql/sql_class.cc

@@ -83,6 +83,7 @@ THD::THD()
     user_time=bootstrap=in_lock_tables=global_read_lock=0;
   query_length=col_access=0;
   query_error=0;
+  server_id = ::server_id;
   server_status=SERVER_STATUS_AUTOCOMMIT;
   next_insert_id=last_insert_id=0;
   open_tables=temporary_tables=0;

sql/sql_class.h

@@ -243,6 +243,7 @@ public:
   ULL	  *ull;
   struct st_my_thread_var *mysys_var;
   enum enum_server_command command;
+  uint32 server_id;
   const char *where;
   char* last_nx_table; // last non-existent table, we need this for replication
   char* last_nx_db; // database of the last nx table

sql/sql_parse.cc

@@ -17,6 +17,7 @@
 
 #include "mysql_priv.h"
 #include "sql_acl.h"
+#include "sql_repl.h"
 #include <m_ctype.h>
 #include <thr_alarm.h>
 #include <myisam.h>
@@ -24,13 +25,6 @@
 
 #define SCRAMBLE_LENGTH 8
 
-extern pthread_handler_decl(handle_slave,arg);
-extern bool slave_running;
-extern char* master_host;
-extern pthread_t slave_real_id;
-extern MASTER_INFO glob_mi;
-extern my_string opt_bin_logname, master_info_file;
-extern I_List<i_string> binlog_do_db, binlog_ignore_db;
 
 extern int yyparse(void);
 extern "C" pthread_mutex_t THR_LOCK_keycache;
@@ -47,15 +41,8 @@ static void mysql_init_query(THD *thd);
 static void remove_escape(char *name);
 static void kill_one_thread(THD *thd, ulong thread);
 static void refresh_status(void);
-static int start_slave(THD* thd = 0, bool net_report = 1);
-static int stop_slave(THD* thd = 0, bool net_report = 1);
-static int change_master(THD* thd);
-static void reset_slave();
-static void reset_master();
 
-extern int init_master_info(MASTER_INFO* mi);
+const char *any_db="*any*";	// Special symbol for check_access
-
-static const char *any_db="*any*";	// Special symbol for check_access
 
 const char *command_name[]={
   "Sleep", "Quit", "Init DB", "Query", "Field List", "Create DB",
@@ -717,9 +704,14 @@ bool do_command(THD *thd)
 
       ulong pos;
       ushort flags;
+      uint32 slave_server_id;
       pos = uint4korr(packet + 1);
       flags = uint2korr(packet + 5);
-      mysql_binlog_send(thd, thd->strdup(packet + 7), pos, flags);
+      pthread_mutex_lock(&LOCK_server_id);
+      kill_zombie_dump_threads(slave_server_id = uint4korr(packet+7));
+      thd->server_id = slave_server_id;
+      pthread_mutex_unlock(&LOCK_server_id);
+      mysql_binlog_send(thd, strdup(packet + 11), pos, flags);
       break;
     }
   case COM_REFRESH:
@@ -2516,207 +2508,3 @@ static void refresh_status(void)
   pthread_mutex_unlock(&THR_LOCK_keycache);
 }
 
-static int start_slave(THD* thd , bool net_report)
-{
-  if(!thd) thd = current_thd;
-  NET* net = &thd->net;
-  const char* err = 0;
-  if (check_access(thd, PROCESS_ACL, any_db))
-    return 1;
-  pthread_mutex_lock(&LOCK_slave);
-  if(!slave_running)
-    if(glob_mi.inited && glob_mi.host)
-      {
-	pthread_t hThread;
-	if(pthread_create(&hThread, &connection_attrib, handle_slave, 0))
-	  {
-	    err = "cannot create slave thread";
-	  }
-      }
-    else
-      err = "Master host not set or master info not initialized";
-  else
-    err =  "Slave already running";
-
-  pthread_mutex_unlock(&LOCK_slave);
-  if(err)
-    {
-      if(net_report) send_error(net, 0, err);
-      return 1;
-    }
-  else if(net_report)
-    send_ok(net);
-
-  return 0;
-}
-
-static int stop_slave(THD* thd, bool net_report )
-{
-  if(!thd) thd = current_thd;
-  NET* net = &thd->net;
-  const char* err = 0;
-
-  if (check_access(thd, PROCESS_ACL, any_db))
-    return 1;
-
-  pthread_mutex_lock(&LOCK_slave);
-  if (slave_running)
-  {
-    abort_slave = 1;
-    thr_alarm_kill(slave_real_id);
-    // do not abort the slave in the middle of a query, so we do not set
-    // thd->killed for the slave thread
-    thd->proc_info = "waiting for slave to die";
-    pthread_cond_wait(&COND_slave_stopped, &LOCK_slave);
-  }
-  else
-    err = "Slave is not running";
-
-  pthread_mutex_unlock(&LOCK_slave);
-  thd->proc_info = 0;
-
-  if(err)
-    {
-     if(net_report) send_error(net, 0, err);
-     return 1;
-    }
-  else if(net_report)
-    send_ok(net);
-
-  return 0;
-}
-
-static void reset_slave()
-{
-  MY_STAT stat_area;
-  char fname[FN_REFLEN];
-  bool slave_was_running = slave_running;
-
-  if(slave_running)
-    stop_slave(0,0);
-
-  fn_format(fname, master_info_file, mysql_data_home, "", 4+16+32);
-  if(my_stat(fname, &stat_area, MYF(0)))
-    if(my_delete(fname, MYF(MY_WME)))
-        return;
-
-  if(slave_was_running)
-    start_slave(0,0);
-}
-
-static int change_master(THD* thd)
-{
-  bool slave_was_running;
-  // kill slave thread
-  pthread_mutex_lock(&LOCK_slave);
-  if((slave_was_running = slave_running))
-    {
-      abort_slave = 1;
-      thr_alarm_kill(slave_real_id);
-      thd->proc_info = "waiting for slave to die";
-      pthread_cond_wait(&COND_slave_stopped, &LOCK_slave); // wait until done
-    }
-  pthread_mutex_unlock(&LOCK_slave);
-  thd->proc_info = "changing master";
-  LEX_MASTER_INFO* lex_mi = &thd->lex.mi;
-
-  if(!glob_mi.inited)
-    init_master_info(&glob_mi);
-  
-  pthread_mutex_lock(&glob_mi.lock);
-  if((lex_mi->host || lex_mi->port) && !lex_mi->log_file_name && !lex_mi->pos)
-    {
-      // if we change host or port, we must reset the postion
-      glob_mi.log_file_name[0] = 0;
-      glob_mi.pos = 0;
-    }
-
-  if(lex_mi->log_file_name)
-    strmake(glob_mi.log_file_name, lex_mi->log_file_name,
-	    sizeof(glob_mi.log_file_name));
-  if(lex_mi->pos)
-    glob_mi.pos = lex_mi->pos;
-
-  if(lex_mi->host)
-    strmake(glob_mi.host, lex_mi->host, sizeof(glob_mi.host));
-  if(lex_mi->user)
-    strmake(glob_mi.user, lex_mi->user, sizeof(glob_mi.user));
-  if(lex_mi->password)
-    strmake(glob_mi.password, lex_mi->password, sizeof(glob_mi.password));
-  if(lex_mi->port)
-    glob_mi.port = lex_mi->port;
-  if(lex_mi->connect_retry)
-    glob_mi.connect_retry = lex_mi->connect_retry;
-
-  flush_master_info(&glob_mi);
-  pthread_mutex_unlock(&glob_mi.lock);
-  thd->proc_info = "starting slave";
-  if(slave_was_running)
-    start_slave(0,0);
-  thd->proc_info = 0;
-
-  send_ok(&thd->net);
-  return 0;
-}
-
-static void reset_master()
-{
-  if(!mysql_bin_log.is_open())
-  {
-    my_error(ER_FLUSH_MASTER_BINLOG_CLOSED,  MYF(ME_BELL+ME_WAITTANG));
-    return;
-  }
-
-  LOG_INFO linfo;
-  if (mysql_bin_log.find_first_log(&linfo, ""))
-    return;
-
-  for(;;)
-  {
-    my_delete(linfo.log_file_name, MYF(MY_WME));
-    if (mysql_bin_log.find_next_log(&linfo))
-      break;
-  }
-  mysql_bin_log.close(1); // exiting close
-  my_delete(mysql_bin_log.get_index_fname(), MYF(MY_WME));
-  mysql_bin_log.open(opt_bin_logname,LOG_BIN);
-
-}
-
-int show_binlog_info(THD* thd)
-{
-  DBUG_ENTER("show_binlog_info");
-  List<Item> field_list;
-  field_list.push_back(new Item_empty_string("File", FN_REFLEN));
-  field_list.push_back(new Item_empty_string("Position",20));
-  field_list.push_back(new Item_empty_string("Binlog_do_db",20));
-  field_list.push_back(new Item_empty_string("Binlog_ignore_db",20));
-
-  if(send_fields(thd, field_list, 1))
-    DBUG_RETURN(-1);
-  String* packet = &thd->packet;
-  packet->length(0);
-
-  if(mysql_bin_log.is_open())
-    {
-      LOG_INFO li;
-      mysql_bin_log.get_current_log(&li);
-      net_store_data(packet, li.log_file_name);
-      net_store_data(packet, (longlong)li.pos);
-      net_store_data(packet, &binlog_do_db);
-      net_store_data(packet, &binlog_ignore_db);
-    }
-  else
-    {
-      net_store_null(packet);
-      net_store_null(packet);
-      net_store_null(packet);
-      net_store_null(packet);
-    }
-
-  if(my_net_write(&thd->net, (char*)thd->packet.ptr(), packet->length()))
-    DBUG_RETURN(-1);
-
-  send_eof(&thd->net);
-  DBUG_RETURN(0);
-}