changed to use IO_CACHE instead of FILE

BitKeeper/deleted/.del-mf_reccache.c: ***MISSING WEAVE*** Docs/manual.texi: Fix licence information + update changelog client/mysqlimport.c: Fixed typo client/sql_string.cc: Added support for IO_CACHE client/sql_string.h: Added support for IO_CACHE include/my_sys.h: More options for IO_CACHE mysql.proj: Update mysys/Makefile.am: Remoced mf_reccache.c mysys/mf_cache.c: Fixed return value on error and optimzed used of write cache files mysys/mf_iocache.c: More options for IO_CACHE mysys/my_vsnprintf.c: Optimized code sql/mf_iocache.cc: merge with mf_iocache.c sql/net_pkg.cc: cleanup sql/sql_class.cc: Support for transaction safe log files sql/sql_string.cc: Added support for IO_CACHE sql/sql_string.h: Added support for IO_CACHE sql/time.cc: cleanup BitKeeper/etc/logging_ok: Logging to logging@openlogging.org accepted
author: unknown <monty@narttu.mysql.fi> 2000-11-15 23:00:06 +0200
committer: unknown <monty@narttu.mysql.fi> 2000-11-15 23:00:06 +0200
commit: 9a846a52ae62f701c2d54d3f468e2ead393acf91 (patch)
tree: 622092bf596b26a1f762020729c03d573a5b216d
parent: f3d2341f1f30384d92b285c1e421d8c599ee2b79 (diff)
download: mariadb-git-9a846a52ae62f701c2d54d3f468e2ead393acf91.tar.gz
24 files changed, 816 insertions, 821 deletions
diff --git a/BitKeeper/etc/logging_ok b/BitKeeper/etc/logging_ok
index a6b0f220269..f5cbc2ff8bf 100644
--- a/BitKeeper/etc/logging_ok
+++ b/BitKeeper/etc/logging_ok
@@ -1 +1 @@
-monty@tik.mysql.com
+monty@narttu.mysql.fi
diff --git a/Docs/manual.texi b/Docs/manual.texi
index d49fddebc6c..ec6b04ab9ae 100644
--- a/Docs/manual.texi
+++ b/Docs/manual.texi
@@ -3610,10 +3610,13 @@ similar system. In the worst case, we may require access to your system
 to be able to create a binary distribution.
 
 @item
-If you can provide accommodations and pay for traveler fares, you can even
-get a @strong{MySQL} developer to visit you and offer you help with your
-troubles. Extended login support entitles you to one personal
-encounter per year, but we are always very flexible towards our customers!
+If you can provide accommodations and pay for traveler fares, you can
+even get a @strong{MySQL} developer to visit you and offer you help with
+your troubles. Extended login support entitles you to one personal
+encounter per year, but we are always very flexible towards our
+customers!  If the visit takes 16 hours or more, the first 8 hours is
+without charge.  For the hours above 8 hours, you will be charged with a
+rate that is at least 20 % less than our standard rates.
 @end itemize
 
 @node Installing, Compatibility, Licensing and Support, Top
@@ -38367,6 +38370,9 @@ though, so 3.23 is not released as a stable version yet.
 @appendixsubsec Changes in release 3.23.28
 @itemize @bullet
 @item
+Changed all log files to use our own IO_CACHE mechanism instead of
+FILE:s to avoid OS problems when there is many files open.
+@item
 Added options @code{--open-files} and @code{--timezone} to @code{safe_mysqld}.
 @item
 Fixed fatal bug in @code{CREATE TEMPORARY TABLE ...SELECT ...}.
diff --git a/client/mysqlimport.c b/client/mysqlimport.c
index 68cd84fbbb7..d00c99d4061 100644
--- a/client/mysqlimport.c
+++ b/client/mysqlimport.c
@@ -25,7 +25,7 @@
 **			   *			   *
 **			   *************************
 */
-#define IMPORT_VERSION "2.5"
+#define IMPORT_VERSION "2.6"
 
 #include <global.h>
 #include <my_sys.h>
@@ -125,7 +125,7 @@ file. The SQL command 'LOAD DATA INFILE' is used to import the rows.\n");
                         Give the column names in a comma separated list.\n\
                         This is same as giving columns to LOAD DATA INFILE.\n\
   -C, --compress        Use compression in server/client protocol\n\
-  -d, --delete          Deletes first all rows from table.\n\
+  -d, --delete          First delete all rows from table.\n\
   -f, --force		Continue even if we get an sql-error.\n\
   -h, --host=...	Connect to host.\n\
   -i, --ignore          If duplicate unique key was found, keep old row.\n\
diff --git a/client/sql_string.cc b/client/sql_string.cc
index 7ca2d3c419e..4b9ebef21f1 100644
--- a/client/sql_string.cc
+++ b/client/sql_string.cc
@@ -95,17 +95,6 @@ bool String::realloc(uint32 alloc_length)
   return FALSE;
 }
 
-
-#ifdef NOT_NEEDED
-bool String::set(long num)
-{
-  if (alloc(14))
-    return TRUE;
-  str_length=(uint32) (int10_to_str(num,Ptr,-10)-Ptr);
-  return FALSE;
-}
-#endif
-
 bool String::set(longlong num)
 {
   if (alloc(21))
@@ -274,6 +263,7 @@ bool String::append(const char *s,uint32 arg_length)
   return FALSE;
 }
 
+#ifdef TO_BE_REMOVED
 bool String::append(FILE* file, uint32 arg_length, myf my_flags)
 {
   if (realloc(str_length+arg_length))
@@ -286,6 +276,20 @@ bool String::append(FILE* file, uint32 arg_length, myf my_flags)
   str_length+=arg_length;
   return FALSE;
 }
+#endif
+
+bool String::append(IO_CACHE* file, uint32 arg_length)
+{
+  if (realloc(str_length+arg_length))
+    return TRUE;
+  if (my_b_read(file, (byte*) Ptr + str_length, arg_length))
+  {
+    shrink(str_length);
+    return TRUE;
+  }
+  str_length+=arg_length;
+  return FALSE;
+}
 
 uint32 String::numchars()
 {
diff --git a/client/sql_string.h b/client/sql_string.h
index 8711cf314ad..74dbc4cc6bd 100644
--- a/client/sql_string.h
+++ b/client/sql_string.h
@@ -100,16 +100,16 @@ public:
   bool set(ulonglong num);
   bool set(double num,uint decimals=2);
   inline void free()
+  {
+    if (alloced)
     {
-      if (alloced)
-      {
-	alloced=0;
-	Alloced_length=0;
-	my_free(Ptr,MYF(0));
-	Ptr=0;
-      }
+      alloced=0;
+      Alloced_length=0;
+      my_free(Ptr,MYF(0));
+      Ptr=0;
+      str_length=0;				/* Safety */
     }
-
+  }
   inline bool alloc(uint32 arg_length)
   {
     if (arg_length < Alloced_length)
@@ -152,7 +152,7 @@ public:
   bool copy(const char *s,uint32 arg_length);	// Allocate new string
   bool append(const String &s);
   bool append(const char *s,uint32 arg_length=0);
-  bool append(FILE* file, uint32 arg_length, myf my_flags);
+  bool append(IO_CACHE* file, uint32 arg_length);
   int strstr(const String &search,uint32 offset=0); // Returns offset to substring or -1
   int strrstr(const String &search,uint32 offset=0); // Returns offset to substring or -1
   bool replace(uint32 offset,uint32 arg_length,const String &to);
diff --git a/include/my_sys.h b/include/my_sys.h
index beee8e3dc1c..1d4673e1e79 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -59,6 +59,7 @@ extern int NEAR my_errno;		/* Last error in mysys */
 #define MY_WME		16	/* Write message on error */
 #define MY_WAIT_IF_FULL 32	/* Wait and try again if disk full error */
 #define MY_RAID         64      /* Support for RAID (not the "Johnson&Johnson"-s one ;) */
+#define MY_DONT_CHECK_FILESIZE 128	/* Option to init_io_cache() */
 #define MY_LINK_WARNING 32	/* my_redel() gives warning if links */
 #define MY_COPYTIME	64	/* my_redel() copys time */
 #define MY_HOLD_ORIGINAL_MODES 128  /* my_copy() holds to file modes */
@@ -505,6 +506,10 @@ extern int my_block_write(IO_CACHE *info, const byte *Buffer,
 			  uint Count, my_off_t pos);
 extern int flush_io_cache(IO_CACHE *info);
 extern int end_io_cache(IO_CACHE *info);
+extern uint my_b_fill(IO_CACHE *info);
+extern void my_b_seek(IO_CACHE *info,my_off_t pos);
+extern uint my_b_gets(IO_CACHE *info, char *to, uint max_length);
+extern uint my_b_printf(IO_CACHE *info, const char* fmt, ...);
 extern my_bool open_cached_file(IO_CACHE *cache,const char *dir,
 				 const char *prefix, uint cache_size,
 				 myf cache_myflags);
diff --git a/mysql.proj b/mysql.proj
index ed591da265e..a6e5d9c5852 100644
--- a/mysql.proj
+++ b/mysql.proj
diff --git a/mysys/Makefile.am b/mysys/Makefile.am
index 6b38d9364f6..3d60716e358 100644
--- a/mysys/Makefile.am
+++ b/mysys/Makefile.am
@@ -26,7 +26,7 @@ libmysys_a_SOURCES =	my_init.c my_getwd.c mf_getdate.c\
 			mf_path.c mf_loadpath.c\
 			my_open.c my_create.c my_seek.c my_read.c \
 			my_pread.c my_write.c \
-			mf_reccache.c mf_keycache.c \
+			mf_keycache.c \
 			mf_iocache.c mf_cache.c mf_tempfile.c \
 			my_lock.c mf_brkhant.c my_alarm.c \
 			my_malloc.c my_realloc.c my_once.c mulalloc.c \
diff --git a/mysys/mf_cache.c b/mysys/mf_cache.c
index 2c197f6fd20..ff29926ac50 100644
--- a/mysys/mf_cache.c
+++ b/mysys/mf_cache.c
@@ -74,7 +74,7 @@ my_bool open_cached_file(IO_CACHE *cache, const char* dir, const char *prefix,
   }
   my_free(cache->dir,	MYF(MY_ALLOW_ZERO_PTR));
   my_free(cache->prefix,MYF(MY_ALLOW_ZERO_PTR));
-  DBUG_RETURN(0);
+  DBUG_RETURN(1);
 }
 
 	/* Create the temporary file */
@@ -101,10 +101,12 @@ void close_cached_file(IO_CACHE *cache)
   DBUG_ENTER("close_cached_file");
   if (my_b_inited(cache))
   {
+    File file=cache->file;
+    cache->file= -1;				/* Don't flush data */
     (void) end_io_cache(cache);
-    if (cache->file >= 0)
+    if (file >= 0)
     {
-      (void) my_close(cache->file,MYF(0));
+      (void) my_close(file,MYF(0));
 #ifdef CANT_DELETE_OPEN_FILES
       if (cache->file_name)
       {
diff --git a/mysys/mf_iocache.c b/mysys/mf_iocache.c
index 86cf5fc65e2..0d1c227c2b2 100644
--- a/mysys/mf_iocache.c
+++ b/mysys/mf_iocache.c
@@ -22,10 +22,13 @@
   (and get a EOF-error).
   Possibly use of asyncronic io.
   macros for read and writes for faster io.
-  Used instead of FILE when reading or writing hole files.
-  This shall make mf_rec_cache obsolite.
-  One can change info->pos_in_file to a higer value to skipp bytes in file if
+  Used instead of FILE when reading or writing whole files.
+  This will make mf_rec_cache obsolete.
+  One can change info->pos_in_file to a higher value to skip bytes in file if
   also info->rc_pos is set to info->rc_end.
+  If called through open_cached_file(), then the temporary file will
+  only be created if a write exeeds the file buffer or if one calls
+  flush_io_cache().  
 */
 
 #define MAP_TO_USE_RAID
@@ -40,7 +43,7 @@ static void my_aiowait(my_aio_result *result);
 
 	/*
 	** if cachesize == 0 then use default cachesize (from s-file)
-	** if file == -1 then real_open_cached_file() will be called to
+	** if file == -1 then real_open_cached_file() will be called.
 	** returns 0 if ok
 	*/
 
@@ -59,17 +62,24 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
   min_cache=use_async_io ? IO_SIZE*4 : IO_SIZE*2;
   if (type == READ_CACHE)
   {						/* Assume file isn't growing */
-    my_off_t file_pos,end_of_file;
-    if ((file_pos=my_tell(file,MYF(0)) == MY_FILEPOS_ERROR))
-      DBUG_RETURN(1);
-    end_of_file=my_seek(file,0L,MY_SEEK_END,MYF(0));
-    if (end_of_file < seek_offset)
-      end_of_file=seek_offset;
-    VOID(my_seek(file,file_pos,MY_SEEK_SET,MYF(0)));
-    if ((my_off_t) cachesize > end_of_file-seek_offset+IO_SIZE*2-1)
+    if (cache_myflags & MY_DONT_CHECK_FILESIZE)
     {
-      cachesize=(uint) (end_of_file-seek_offset)+IO_SIZE*2-1;
-      use_async_io=0;				/* No nead to use async */
+      cache_myflags &= ~MY_DONT_CHECK_FILESIZE;
+    }
+    else
+    {
+      my_off_t file_pos,end_of_file;
+      if ((file_pos=my_tell(file,MYF(0)) == MY_FILEPOS_ERROR))
+	DBUG_RETURN(1);
+      end_of_file=my_seek(file,0L,MY_SEEK_END,MYF(0));
+      if (end_of_file < seek_offset)
+	end_of_file=seek_offset;
+      VOID(my_seek(file,file_pos,MY_SEEK_SET,MYF(0)));
+      if ((my_off_t) cachesize > end_of_file-seek_offset+IO_SIZE*2-1)
+      {
+	cachesize=(uint) (end_of_file-seek_offset)+IO_SIZE*2-1;
+	use_async_io=0;				/* No nead to use async */
+      }
     }
   }
 
@@ -545,7 +555,6 @@ int my_block_write(register IO_CACHE *info, const byte *Buffer, uint Count,
   return error;
 }
 
-
 	/* Flush write cache */
 
 int flush_io_cache(IO_CACHE *info)
@@ -565,7 +574,9 @@ int flush_io_cache(IO_CACHE *info)
       length=(uint) (info->rc_pos - info->buffer);
       if (info->seek_not_done)
       {					/* File touched, do seek */
-	VOID(my_seek(info->file,info->pos_in_file,MY_SEEK_SET,MYF(0)));
+	if (my_seek(info->file,info->pos_in_file,MY_SEEK_SET,MYF(0)) ==
+	    MY_FILEPOS_ERROR)
+	  DBUG_RETURN((info->error= -1));
 	info->seek_not_done=0;
       }
       info->rc_pos=info->buffer;
diff --git a/mysys/my_vsnprintf.c b/mysys/my_vsnprintf.c
index 63730926156..b394adf2a96 100644
--- a/mysys/my_vsnprintf.c
+++ b/mysys/my_vsnprintf.c
@@ -21,74 +21,49 @@
 #include <stdarg.h>
 #include <m_ctype.h>
 
-
-
-int my_vsnprintf(char* str, size_t n, const char* fmt, va_list ap)
+int my_vsnprintf(char *to, size_t n, const char* fmt, va_list ap)
 {
-  uint		olen = 0, plen;
-  const char *tpos;
-  reg1 char	*endpos;
-  reg2 char		* par;
-  char* ebuff = str;
-  
-  endpos=ebuff;
-  tpos = fmt;
+  char *start=to, *end=to+n-1;
 
-  while (*tpos)
+  for (; *fmt ; fmt++)
   {
-    if (tpos[0] != '%')
+    if (fmt[0] != '%')
     {
-      if(olen + 1 >= n)
+      if (to == end)			/* End of buffer */
 	break;
-      
-      *endpos++= *tpos++;	/* Copy ordinary char */
-      olen++;
+      *to++= *fmt;			/* Copy ordinary char */
       continue;
     }
-    if (*++tpos == '%')		/* test if %% */
-    {
-      olen--;
-    }
-    else
+    /* Skipp if max size is used (to be compatible with printf) */
+    while (isdigit(*fmt) || *fmt == '.' || *fmt == '-')
+      fmt++;
+    if (*fmt == 's')				/* String parameter */
     {
-      /* Skipp if max size is used (to be compatible with printf) */
-      while (isdigit(*tpos) || *tpos == '.' || *tpos == '-')
-	tpos++;
-      if (*tpos == 's')				/* String parameter */
-      {
-	par = va_arg(ap, char *);
-	plen = (uint) strlen(par);
-	if (olen + plen < n)		/* Replace if possible */
-	{
-	  endpos=strmov(endpos,par);
-	  tpos++;
-	  olen+=plen;
-	  continue;
-	}
-      }
-      else if (*tpos == 'd' || *tpos == 'u')	/* Integer parameter */
+      reg2 char	*par = va_arg(ap, char *);
+      uint plen = (uint) strlen(par);
+      if ((uint) (end-to) > plen)	/* Replace if possible */
       {
-	register int iarg;
-	iarg = va_arg(ap, int);
-	if(olen + 16 >= n) break;
-	
-	if (*tpos == 'd')
-	  plen= (uint) (int2str((long) iarg,endpos, -10) - endpos);
-	else
-	  plen= (uint) (int2str((long) (uint) iarg,endpos,10)- endpos);
-	if (olen + plen < n) /* Replace parameter if possible */
-	{
-	  endpos+=plen;
-	  tpos++;
-	  olen+=plen;
-	  continue;
-	}
+	to=strmov(to,par);
+	continue;
       }
     }
-    *endpos++='%';		/* % used as % or unknown code */
+    else if (*fmt == 'd' || *fmt == 'u')	/* Integer parameter */
+    {
+      register int iarg;
+      if ((uint) (end-to) < 16)
+	break;
+      iarg = va_arg(ap, int);
+      if (*fmt == 'd')
+	to=int10_to_str((long) iarg,to, -10);
+      else
+	to=int10_to_str((long) (uint) iarg,to,10);
+      continue;
+    }
+    /* We come here on '%%', unknown code or too long parameter */
+    if (to == end)
+      break;
+    *to++='%';				/* % used as % or unknown code */
   }
-  *endpos='\0';
-  /* End of errmessage */
- return olen;
+  *to='\0';				/* End of errmessage */
+  return (uint) (to - start);
 }
-
diff --git a/sql/log.cc b/sql/log.cc
index c1e38a104ca..4ed48b18f0f 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -72,17 +72,16 @@ static int find_uniq_filename(char *name)
   DBUG_RETURN(0);
 }
 
-
-
-MYSQL_LOG::MYSQL_LOG(): file(-1),index_file(-1),last_time(0),query_start(0),
-			name(0), log_type(LOG_CLOSED),write_error(0),inited(0),
-			no_rotate(0)
+MYSQL_LOG::MYSQL_LOG(): last_time(0), query_start(0),
+			name(0), log_type(LOG_CLOSED),write_error(0),
+			inited(0), opened(0), no_rotate(0)
 {
   /*
     We don't want to intialize LOCK_Log here as the thread system may
     not have been initailized yet. We do it instead at 'open'.
   */
-    index_file_name[0] = 0;
+  index_file_name[0] = 0;
+  bzero((char*) &log_file,sizeof(log_file));
 }
 
 MYSQL_LOG::~MYSQL_LOG()
@@ -103,6 +102,7 @@ void MYSQL_LOG::set_index_file_name(const char* index_file_name)
     this->index_file_name[0] = 0;
 }
 
+
 int MYSQL_LOG::generate_new_name(char *new_name, const char *log_name)
 {      
   if (log_type == LOG_NORMAL)
@@ -128,6 +128,9 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
 {
   MY_STAT tmp_stat;
   char buff[512];
+  File file= -1;
+  bool do_magic;
+
   if (!inited)
   {
     inited=1;
@@ -136,29 +139,27 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
     if (log_type_arg == LOG_BIN && *fn_ext(log_name))
       no_rotate = 1;
   }
-
+  
   log_type=log_type_arg;
-  name=my_strdup(log_name,MYF(0));
+  if (!(name=my_strdup(log_name,MYF(MY_WME))))
+    goto err;
   if (new_name)
     strmov(log_file_name,new_name);
   else if (generate_new_name(log_file_name, name))
-    return;
+    goto err;
 
   if (log_type == LOG_BIN && !index_file_name[0])
     fn_format(index_file_name, name, mysql_data_home, ".index", 6);
   
   db[0]=0;
-  bool do_magic = ((log_type == LOG_BIN) && !my_stat(log_file_name,
-						     &tmp_stat, MYF(0)));
+  do_magic = ((log_type == LOG_BIN) && !my_stat(log_file_name,
+						&tmp_stat, MYF(0)));
   
   if ((file=my_open(log_file_name,O_APPEND | O_WRONLY | O_BINARY,
-		    MYF(MY_WME | ME_WAITTANG)) < 0)
-  {
-    my_free(name,MYF(0));    
-    name=0;
-    log_type=LOG_CLOSED;
-    return;
-  }
+		    MYF(MY_WME | ME_WAITTANG))) < 0 ||
+      init_io_cache(&log_file, file, IO_SIZE, WRITE_CACHE,
+		    my_tell(file,MYF(MY_WME)), 0, MYF(MY_WME | MY_NABP)))
+    goto err;
 
   if (log_type == LOG_NORMAL)
   {
@@ -169,7 +170,9 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
     sprintf(buff, "%s, Version: %s, started with:\nTcp port: %d  Unix socket: %s\n", my_progname,server_version,mysql_port,mysql_unix_port);
 #endif
     end=strmov(strend(buff),"Time                 Id Command    Argument\n");
-    my_write(file,buff,(uint) (end-buff),MYF(0));
+    if (my_b_write(&log_file,buff,(uint) (end-buff)) ||
+	flush_io_cache(&log_file))
+      goto err;
   }
   else if (log_type == LOG_NEW)
   {
@@ -184,11 +187,12 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
 	    tm_tmp.tm_hour,
 	    tm_tmp.tm_min,
 	    tm_tmp.tm_sec);
-    my_write(file,buff,(uint) strlen(buff),MYF(0));
+    if (my_b_write(&log_file,buff,(uint) strlen(buff)) ||
+	flush_io_cache(&log_file))
+      goto err;
   }
   else if (log_type == LOG_BIN)
   {
-
     // Explanation of the boolean black magic:
     //
     // if we are supposed to write magic number try write
@@ -196,34 +200,36 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
     // then if index_file has not been previously opened, try to open it
     // clean up if failed
 
-    if ((do_magic && my_write(file, (byte*) BINLOG_MAGIC, 4,
-			      MYF(MY_NABP|MY_WME)) ||
+    if ((do_magic && my_b_write(&log_file, (byte*) BINLOG_MAGIC, 4)) ||
 	(index_file < 0 && 
-	 (index_file = my_fopen(index_file_name,O_APPEND | O_BINARY | O_RDWR,
-				MYF(MY_WME))) < 0)))
-    {
-      my_close(file,MYF(MY_WME));
-      my_free(name,MYF(0));    
-      name=0;
-      file= -1;
-      log_type=LOG_CLOSED;
-      return;
-    }
+	 (index_file = my_open(index_file_name,O_APPEND | O_BINARY | O_RDWR,
+			       MYF(MY_WME))) < 0))
+      goto err;
     Start_log_event s;
-    s.write(file);
+    s.write(&log_file);
     pthread_mutex_lock(&LOCK_index);
-    my_seek(index_file, 0L, MY_SEEK_END, MYF(MY_WME));
     my_write(index_file, log_file_name,strlen(log_file_name), MYF(0));
     my_write(index_file, "\n",1, MYF(0));
     pthread_mutex_unlock(&LOCK_index);
   }
+  return;
+
+err:
+  if (file >= 0)
+    my_close(file,MYF(0));
+  end_io_cache(&log_file);
+  x_free(name); name=0;
+  log_type=LOG_CLOSED;
+
+  return;
+  
 }
 
 int MYSQL_LOG::get_current_log(LOG_INFO* linfo)
 {
   pthread_mutex_lock(&LOCK_log);
-  strmake(linfo->log_file_name, log_file_name, sizeof(linfo->log_file_name));
-  linfo->pos = my_tell(file, MYF(MY_WME));
+  strmake(linfo->log_file_name, log_file_name, sizeof(linfo->log_file_name)-1);
+  linfo->pos = my_b_tell(&log_file);
   pthread_mutex_unlock(&LOCK_log);
   return 0;
 }
@@ -231,46 +237,46 @@ int MYSQL_LOG::get_current_log(LOG_INFO* linfo)
 // if log_name is "" we stop at the first entry
 int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
 {
-  // mutex needed because we need to make sure the file pointer does not move
-  // from under our feet
-  if (index_file < 0) return LOG_INFO_INVALID;
+  if (index_file < 0)
+    return LOG_INFO_INVALID;
   int error = 0;
   char* fname = linfo->log_file_name;
   int log_name_len = (uint) strlen(log_name);
+  IO_CACHE io_cache;
 
+  // mutex needed because we need to make sure the file pointer does not move
+  // from under our feet
   pthread_mutex_lock(&LOCK_index);
-  if (my_seek(index_file, 0L, MY_SEEK_SET, MYF(MY_WME) ) == MY_FILEPOS_ERROR)
+  if (init_io_cache(&io_cache, index_file, IO_SIZE, READ_CACHE, (my_off_t) 0,
+		    0, MYF(MY_WME)))
   {
     error = LOG_INFO_SEEK;
     goto err;
   }
-
   for(;;)
   {
-    if (!fgets(fname, FN_REFLEN, index_file))
+    uint length;
+    if (!(length=my_b_gets(&io_cache, fname, FN_REFLEN)))
     {
-      error = feof(index_file) ? LOG_INFO_EOF : LOG_INFO_IO;
+      error = !io_cache.error ? LOG_INFO_EOF : LOG_INFO_IO;
       goto err;
     }
 
     // if the log entry matches, empty string matching anything
     if (!log_name_len ||
-	(fname[log_name_len] == '\n' &&
+	(log_name_len == length+1 && fname[log_name_len] == '\n' &&
 	 !memcmp(fname, log_name, log_name_len)))
     {
-      if (log_name_len)
-	fname[log_name_len] = 0; // to kill \n
-      else
-      {
-	*(strend(fname) - 1) = 0;
-      }
-      linfo->index_file_offset = my_tell(index_file, MYF(MY_WME));
+      fname[length-1]=0;			// remove last \n
+      linfo->index_file_offset = my_b_tell(&io_cache);
       break;
     }
   }
   error = 0;
+
 err:
   pthread_mutex_unlock(&LOCK_index);
+  end_io_cache(&io_cache);
   return error;
      
 }
@@ -283,27 +289,29 @@ int MYSQL_LOG::find_next_log(LOG_INFO* linfo)
   if (!index_file) return LOG_INFO_INVALID;
   int error = 0;
   char* fname = linfo->log_file_name;
-  char* end ;
-  
-  pthread_mutex_lock(&LOCK_index);
-  if (my_fseek(index_file, linfo->index_file_offset, MY_SEEK_SET, MYF(MY_WME) ) == MY_FILEPOS_ERROR)
-    {
-      error = LOG_INFO_SEEK;
-      goto err;
-    }
+  IO_CACHE io_cache;
+  uint length;
 
-  if (!fgets(fname, FN_REFLEN, index_file))
-    {
-      error = feof(index_file) ? LOG_INFO_EOF : LOG_INFO_IO;
-      goto err;
-   }
-
-  end = strend(fname) - 1;
-  *end = 0; // kill /n
-  linfo->index_file_offset = ftell(index_file);
+  pthread_mutex_lock(&LOCK_index);
+  if (init_io_cache(&io_cache, index_file, IO_SIZE, 
+		    READ_CACHE, (my_off_t) linfo->index_file_offset, 0,
+		    MYF(MY_WME)))
+  {
+    error = LOG_INFO_SEEK;
+    goto err;
+  }
+  if (!(length=my_b_gets(&io_cache, fname, FN_REFLEN)))
+  {
+    error = !io_cache.error ? LOG_INFO_EOF : LOG_INFO_IO;
+    goto err;
+  }
+  fname[length-1]=0;				// kill /n
+  linfo->index_file_offset = my_b_tell(&io_cache);
   error = 0;
+
 err:
   pthread_mutex_unlock(&LOCK_index);
+  end_io_cache(&io_cache);
   return error;
 }
 
@@ -311,22 +319,18 @@ err:
 // we assume that buf has at least FN_REFLEN bytes alloced
 void MYSQL_LOG::make_log_name(char* buf, const char* log_ident)
 {
+  buf[0] = 0;					// In case of error
   if (inited)
-    {
-      int dir_len = dirname_length(log_file_name); 
-      int ident_len = (uint) strlen(log_ident);
-      if (dir_len + ident_len + 1 > FN_REFLEN)
-	{
-	  buf[0] = 0;
-	  return; // protection agains malicious buffer overflow
-	}
+  {
+    int dir_len = dirname_length(log_file_name); 
+    int ident_len = (uint) strlen(log_ident);
+    if (dir_len + ident_len + 1 > FN_REFLEN)
+      return; // protection agains malicious buffer overflow
       
-      memcpy(buf, log_file_name, dir_len);
-      memcpy(buf + dir_len, log_ident, ident_len + 1); // this takes care of  \0
-      // at the end
-    }
-  else
-    buf[0] = 0;
+    memcpy(buf, log_file_name, dir_len);
+    // copy filename + end null
+    memcpy(buf + dir_len, log_ident, ident_len + 1);
+  }
 }
 
 bool MYSQL_LOG::is_active(const char* log_file_name)
@@ -336,15 +340,17 @@ bool MYSQL_LOG::is_active(const char* log_file_name)
 
 void MYSQL_LOG::new_file()
 {
-  if (file)
+  // only rotate open logs that are marked non-rotatable
+  // (binlog with constant name are non-rotatable)
+  if (is_open() && ! no_rotate)
   {
-    if (no_rotate) // do not rotate logs that are marked non-rotatable
-      return;     // ( for binlog with constant name)
-    
     char new_name[FN_REFLEN], *old_name=name;
     VOID(pthread_mutex_lock(&LOCK_log));
     if (generate_new_name(new_name, name))
+    {
+      VOID(pthread_mutex_unlock(&LOCK_log));
       return;					// Something went wrong
+    }
     if (log_type == LOG_BIN)
     {
       /*
@@ -352,15 +358,13 @@ void MYSQL_LOG::new_file()
 	to change base names at some point.
       */
       Rotate_log_event r(new_name+dirname_length(new_name));
-      r.write(file);
+      r.write(&log_file);
       VOID(pthread_cond_broadcast(&COND_binlog_update));
     }
     name=0;
     close();
     open(old_name, log_type, new_name);
     my_free(old_name,MYF(0));
-    if (!file)					// Something went wrong
-      log_type=LOG_CLOSED;
     last_time=query_start=0;
     write_error=0;
     VOID(pthread_mutex_unlock(&LOCK_log));
@@ -375,7 +379,10 @@ void MYSQL_LOG::write(THD *thd,enum enum_server_command command,
   {
     va_list args;
     va_start(args,format);
+    char buff[32];
     VOID(pthread_mutex_lock(&LOCK_log));
+
+    /* Test if someone closed after the is_open test */
     if (log_type != LOG_CLOSED)
     {
       time_t skr;
@@ -405,28 +412,30 @@ void MYSQL_LOG::write(THD *thd,enum enum_server_command command,
 	struct tm *start;
 	localtime_r(&skr,&tm_tmp);
 	start=&tm_tmp;
-	if (fprintf(file,"%02d%02d%02d %2d:%02d:%02d\t",
-		    start->tm_year % 100,
-		    start->tm_mon+1,
-		    start->tm_mday,
-		    start->tm_hour,
-		    start->tm_min,
-		    start->tm_sec) < 0)
+	/* Note that my_b_write() assumes it knows the length for this */
+	sprintf(buff,"%02d%02d%02d %2d:%02d:%02d\t",
+		start->tm_year % 100,
+		start->tm_mon+1,
+		start->tm_mday,
+		start->tm_hour,
+		start->tm_min,
+		start->tm_sec);
+	if (my_b_write(&log_file,buff,16))
 	  error=errno;
       }
-      else if (fputs("\t\t",file) < 0)
+      else if (my_b_write(&log_file,"\t\t",2) < 0)
 	error=errno;
-      if (fprintf(file,"%7ld %-10.10s",
-		  id,command_name[(uint) command]) < 0)
+      sprintf(buff,"%7ld %-10.10s", id,command_name[(uint) command]);
+      if (my_b_write(&log_file,buff,strlen(buff)))
 	error=errno;
       if (format)
       {
-	if (fputc(' ',file) < 0 || vfprintf(file,format,args) < 0)
+	if (my_b_write(&log_file," ",1) ||
+	    my_b_printf(&log_file,format,args) == (uint) -1)
 	  error=errno;
       }
-      if (fputc('\n',file) < 0)
-	error=errno;
-      if (fflush(file) < 0)
+      if (my_b_write(&log_file,"\n",1) ||
+	  flush_io_cache(&log_file))
 	error=errno;
       if (error && ! write_error)
       {
@@ -446,7 +455,7 @@ void MYSQL_LOG::write(Query_log_event* event_info)
   if (is_open())
   {
     VOID(pthread_mutex_lock(&LOCK_log));
-    if (file)
+    if (is_open())
     {
       THD *thd=event_info->thd;
       if ((!(thd->options & OPTION_BIN_LOG) &&
@@ -460,43 +469,38 @@ void MYSQL_LOG::write(Query_log_event* event_info)
       if (thd->last_insert_id_used)
       {
 	Intvar_log_event e((uchar)LAST_INSERT_ID_EVENT, thd->last_insert_id);
-	if (e.write(file))
+	if (e.write(&log_file))
 	{
 	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
 	  goto err;
 	}
       }
-
       if (thd->insert_id_used)
       {
 	Intvar_log_event e((uchar)INSERT_ID_EVENT, thd->last_insert_id);
-	if (e.write(file))
+	if (e.write(&log_file))
 	{
 	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
 	  goto err;
 	}
       }
-
       if (thd->convert_set)
+      {
+	char buf[1024] = "SET CHARACTER SET ";
+	char* p = strend(buf);
+	p = strmov(p, thd->convert_set->name);
+	int save_query_length = thd->query_length;
+	// just in case somebody wants it later
+	thd->query_length = (uint)(p - buf);
+	Query_log_event e(thd, buf);
+	if (e.write(&log_file))
 	{
-	  char buf[1024] = "SET CHARACTER SET ";
-	  char* p = strend(buf);
-	  p = strmov(p, thd->convert_set->name);
-	  int save_query_length = thd->query_length;
-	  // just in case somebody wants it later
-	  thd->query_length = (uint)(p - buf);
-	  Query_log_event e(thd, buf);
-	  if (e.write(file))
-	    {
-	      sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
-	      goto err;
-	    }
-
-	  thd->query_length = save_query_length; // clean up
-	  
+	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
+	  goto err;
 	}
-	  
-      if (event_info->write(file))
+	thd->query_length = save_query_length; // clean up
+      }
+      if (event_info->write(&log_file) || flush_io_cache(&log_file))
       {
 	sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
       }
@@ -512,13 +516,13 @@ void MYSQL_LOG::write(Load_log_event* event_info)
   if (is_open())
   {
     VOID(pthread_mutex_lock(&LOCK_log));
-    if (file)
+    if (is_open())
     {
       THD *thd=event_info->thd;
       if ((thd->options & OPTION_BIN_LOG) ||
 	  !(thd->master_access & PROCESS_ACL))
       {
-	if (event_info->write(file))
+	if (event_info->write(&log_file) || flush_io_cache(&log_file))
 	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
 	VOID(pthread_cond_broadcast(&COND_binlog_update));
       }
@@ -537,7 +541,7 @@ void MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
   {
     time_t current_time;
     VOID(pthread_mutex_lock(&LOCK_log));
-    if (file)
+    if (is_open())
     {						// Safety agains reopen
       int error=0;
       char buff[80],*end;
@@ -556,37 +560,42 @@ void MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
 	  last_time=current_time;
 	  struct tm tm_tmp;
 	  struct tm *start;
+	  char buff[32];
 	  localtime_r(&current_time,&tm_tmp);
 	  start=&tm_tmp;
-	  if (fprintf(file,"# Time: %02d%02d%02d %2d:%02d:%02d\n",
-		      start->tm_year % 100,
-		      start->tm_mon+1,
-		      start->tm_mday,
-		      start->tm_hour,
-		      start->tm_min,
-		      start->tm_sec) < 0)
+	  /* Note that my_b_write() assumes it knows the length for this */
+	  sprintf(buff,"# Time: %02d%02d%02d %2d:%02d:%02d\n",
+		  start->tm_year % 100,
+		  start->tm_mon+1,
+		  start->tm_mday,
+		  start->tm_hour,
+		  start->tm_min,
+		  start->tm_sec);
+	  if (my_b_write(&log_file,buff,24))
 	    error=errno;
 	}
-	if (fprintf(file, "# User@Host: %s [%s] @ %s [%s]\n",
-		    thd->priv_user,
-		    thd->user,
-		    thd->host ? thd->host : "",
-		    thd->ip ? thd->ip : "") < 0)
-	  error=errno;;
+	if (my_b_printf(&log_file, "# User@Host: %s [%s] @ %s [%s]\n",
+			thd->priv_user,
+			thd->user,
+			thd->host ? thd->host : "",
+			thd->ip ? thd->ip : ""))
+	  error=errno;
       }
       if (query_start)
       {
 	/* For slow query log */
 	if (!(specialflag & SPECIAL_LONG_LOG_FORMAT))
 	  current_time=time(NULL);
-	fprintf(file,"# Time: %lu  Lock_time: %lu  Rows_sent: %lu\n",
-		(ulong) (current_time - query_start),
-		(ulong) (thd->time_after_lock - query_start),
-		(ulong) thd->sent_row_count);
+	if (my_b_printf(&log_file,
+			"# Time: %lu  Lock_time: %lu  Rows_sent: %lu\n",
+			(ulong) (current_time - query_start),
+			(ulong) (thd->time_after_lock - query_start),
+			(ulong) thd->sent_row_count))
+	    error=errno;
       }
       if (thd->db && strcmp(thd->db,db))
       {						// Database changed
-	if (fprintf(file,"use %s;\n",thd->db) < 0)
+	if (my_b_printf(&log_file,"use %s;\n",thd->db))
 	  error=errno;
 	strmov(db,thd->db);
       }
@@ -618,7 +627,8 @@ void MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
 	*end++=';';
 	*end++='\n';
 	*end=0;
-	if (fputs("SET ",file) < 0 || fputs(buff+1,file) < 0)
+	if (my_b_write(&log_file,"SET ",4) ||
+	    my_b_write(&log_file,buff+1,(uint) (end-buff)-1))
 	  error=errno;
       }
       if (!query)
@@ -626,10 +636,9 @@ void MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
 	query="#adminstrator command";
 	query_length=21;
       }
-      if (my_fwrite(file,(byte*) query,query_length,MYF(MY_NABP)) ||
-	  fputc(';',file) < 0 || fputc('\n',file) < 0)
-	error=errno;
-      if (fflush(file) < 0)
+      if (my_b_write(&log_file,(byte*) query,query_length) ||
+	  my_b_write(&log_file,";\n",2) ||
+	  flush_io_cache(&log_file))
 	error=errno;
       if (error && ! write_error)
       {
@@ -641,51 +650,48 @@ void MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
   }
 }
 
-
-
+#ifdef TO_BE_REMOVED
 void MYSQL_LOG::flush()
 {
-  if (file)
-    if (fflush(file) < 0 && ! write_error)
+  if (is_open())
+    if (flush_io_cache(log_file) && ! write_error)
     {
       write_error=1;
       sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
     }
 }
+#endif
 
 
 void MYSQL_LOG::close(bool exiting)
 {					// One can't set log_type here!
-  if (file)
+  if (is_open())
   {
+    File file=log_file.file;
     if (log_type == LOG_BIN)
     {
       Stop_log_event s;
-      s.write(file);
+      s.write(&log_file);
       VOID(pthread_cond_broadcast(&COND_binlog_update));
     }
-    if (my_fclose(file,MYF(0)) < 0 && ! write_error)
+    end_io_cache(&log_file);
+    if (my_close(file,MYF(0)) < 0 && ! write_error)
     {
       write_error=1;
       sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
     }
-    file=0;
-  }
-  if (name)
-  {
-    my_free(name,MYF(0));
-    name=0;
+    log_type=LOG_CLOSED;
   }
-
-  if (exiting && index_file)
+  if (exiting && index_file >= 0)
   {
-    if (my_fclose(index_file,MYF(0)) < 0 && ! write_error)
+    if (my_close(index_file,MYF(0)) < 0 && ! write_error)
     {
       write_error=1;
       sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
     }
     index_file=0;
   }
+  safeFree(name);
 }
 
 
diff --git a/sql/log_event.cc b/sql/log_event.cc
index 3e717ce4d6c..7d9f22dea62 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -26,84 +26,78 @@
 static void pretty_print_char(FILE* file, int c)
 {
   fputc('\'', file);
-  switch(c)
-    {
-    case '\n': fprintf(file, "\\n"); break;
-    case '\r': fprintf(file, "\\r"); break;
-    case '\\': fprintf(file, "\\\\"); break;
-    case '\b': fprintf(file, "\\b"); break;
-    case '\'': fprintf(file, "\\'"); break;
-    case 0 : fprintf(file, "\\0"); break;
-    default:
-	fputc(c, file);
-        break;
-    }
-  fputc( '\'', file);
+  switch(c) {
+  case '\n': fprintf(file, "\\n"); break;
+  case '\r': fprintf(file, "\\r"); break;
+  case '\\': fprintf(file, "\\\\"); break;
+  case '\b': fprintf(file, "\\b"); break;
+  case '\'': fprintf(file, "\\'"); break;
+  case 0   : fprintf(file, "\\0"); break;
+  default:
+    fputc(c, file);
+    break;
+  }
+  fputc('\'', file);
 }
 
-int Query_log_event::write(FILE* file)
+int Query_log_event::write(IO_CACHE* file)
 {
   return query ? Log_event::write(file) : -1; 
 }
 
-int Log_event::write(FILE* file)
+int Log_event::write(IO_CACHE* file)
 {
-  if (write_header(file)
-      || write_data(file) || fflush(file)) return -1;
-  return 0;
+  return (write_header(file) || write_data(file)) ? -1 : 0;
 }
 
-int Log_event::write_header(FILE* file)
+int Log_event::write_header(IO_CACHE* file)
 {
-  char buf[LOG_EVENT_HEADER_LEN];
   // make sure to change this when the header gets bigger
+  char buf[LOG_EVENT_HEADER_LEN];
   char* pos = buf;
   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);
+  long tmp=get_data_size() + LOG_EVENT_HEADER_LEN;
+  int4store(pos, tmp);
   pos += 4;
-  return (my_fwrite(file, (byte*) buf, (uint) (pos - buf),
-		    MYF(MY_NABP | MY_WME)));
+  return (my_b_write(file, (byte*) buf, (uint) (pos - buf)));
 }
 
 #ifndef MYSQL_CLIENT
 
-int Log_event::read_log_event(FILE* file, String* packet,
+int Log_event::read_log_event(IO_CACHE* file, String* packet,
 			      pthread_mutex_t* log_lock)
 {
   ulong data_len;
   char buf[LOG_EVENT_HEADER_LEN];
-  if(log_lock)
+  if (log_lock)
     pthread_mutex_lock(log_lock);
-  if (my_fread(file, (byte*)buf, sizeof(buf), MYF(MY_NABP)))
-    {
-      if(log_lock) pthread_mutex_unlock(log_lock);
-      return feof(file) ? LOG_READ_EOF: LOG_READ_IO;
-    }
+  if (my_b_read(file, (byte*) buf, sizeof(buf)))
+  {
+    if (log_lock) pthread_mutex_unlock(log_lock);
+    return file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO;
+  }
   data_len = uint4korr(buf + EVENT_LEN_OFFSET);
   if (data_len < LOG_EVENT_HEADER_LEN || data_len > MAX_EVENT_LEN)
-    {
-      if(log_lock) pthread_mutex_unlock(log_lock);
-      return LOG_READ_BOGUS;
-    }
+  {
+    if (log_lock) pthread_mutex_unlock(log_lock);
+    return LOG_READ_BOGUS;
+  }
   packet->append(buf, sizeof(buf));
   data_len -= LOG_EVENT_HEADER_LEN;
-  if (!data_len)
-    {
-      if(log_lock) pthread_mutex_unlock(log_lock);
-      return 0; // the event does not have a data section
-    }
-  if (packet->append(file, data_len, MYF(MY_WME|MY_NABP)))
+  if (data_len)
+  {
+    if (packet->append(file, data_len))
     {
       if(log_lock)
 	pthread_mutex_unlock(log_lock);
-      return feof(file) ? LOG_READ_TRUNC: LOG_READ_IO;
+      return file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO;
     }
-
-  if(log_lock) pthread_mutex_unlock(log_lock);
+  }
+  if (log_lock) pthread_mutex_unlock(log_lock);
   return 0;
 }
 
@@ -111,18 +105,18 @@ int Log_event::read_log_event(FILE* file, String* packet,
 
 // allocates memory - the caller is responsible for clean-up
 
-Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
+Log_event* Log_event::read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock)
 {
   time_t timestamp;
   uint32 server_id;
   
   char buf[LOG_EVENT_HEADER_LEN-4];
   if(log_lock) pthread_mutex_lock(log_lock);
-  if (my_fread(file, (byte *) buf, sizeof(buf), MY_NABP))
-    {
-      if(log_lock) pthread_mutex_unlock(log_lock);
-      return NULL;
-    }
+  if (my_b_read(file, (byte *) buf, sizeof(buf)))
+  {
+    if (log_lock) pthread_mutex_unlock(log_lock);
+    return NULL;
+  }
   timestamp = uint4korr(buf);
   server_id = uint4korr(buf + 5);
   
@@ -132,13 +126,11 @@ Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
   {
     Query_log_event* q = new Query_log_event(file, timestamp, server_id);
     if(log_lock) pthread_mutex_unlock(log_lock);
-    
     if (!q->query)
     {
       delete q;
-      return NULL;
+      q=NULL;
     }
-
     return q;
   }
   
@@ -146,13 +138,11 @@ Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
   {
     Load_log_event* l = new Load_log_event(file, timestamp, server_id);
     if(log_lock) pthread_mutex_unlock(log_lock);
-    
     if (!l->table_name)
     {
       delete l;
-      return NULL;
+      l=NULL;
     }
-
     return l;
   }
 
@@ -165,9 +155,8 @@ Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
     if (!r->new_log_ident)
     {
       delete r;
-      return NULL;
+      r=NULL;
     }
-
     return r;
   }
 
@@ -179,9 +168,8 @@ Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
     if (e->type == INVALID_INT_EVENT)
     {
       delete e;
-      return NULL;
+      e=NULL;
     }
-
     return e;
   }
   
@@ -198,12 +186,11 @@ Log_event* Log_event::read_log_event(FILE* file, pthread_mutex_t* log_lock)
       return e;
     }
   default:
-    if(log_lock) pthread_mutex_unlock(log_lock);
-    return NULL;
+    break;
   }
 
-  //impossible
-  if(log_lock) pthread_mutex_unlock(log_lock);
+  // default
+  if (log_lock) pthread_mutex_unlock(log_lock);
   return NULL;
 }
 
@@ -320,26 +307,24 @@ 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(IO_CACHE* file, time_t when_arg,
 				   uint32 server_id):
   Log_event(when_arg, 0, 0, server_id),new_log_ident(NULL),alloced(0)
 {
   char *tmp_ident;
   char buf[4];
 
-  if (my_fread(file, (byte*) buf, sizeof(buf), MYF(MY_NABP | MY_WME)))
+  if (my_b_read(file, (byte*) buf, sizeof(buf)))
     return;
-
   ulong event_len;
   event_len = uint4korr(buf);
-  if(event_len < ROTATE_EVENT_OVERHEAD)
+  if (event_len < ROTATE_EVENT_OVERHEAD)
     return;
 
   ident_len = (uchar)(event_len - ROTATE_EVENT_OVERHEAD);
-
   if (!(tmp_ident = (char*) my_malloc((uint)ident_len, MYF(MY_WME))))
     return;
-  if (my_fread( file, (byte*) tmp_ident, (uint)ident_len, MYF(MY_NABP | MY_WME)))
+  if (my_b_read( file, (byte*) tmp_ident, (uint) ident_len))
   {
     my_free((gptr) tmp_ident, MYF(0));
     return;
@@ -373,21 +358,18 @@ Rotate_log_event::Rotate_log_event(const char* buf, int max_buf):
   alloced = 1;
 }
 
-int Rotate_log_event::write_data(FILE* file)
+int Rotate_log_event::write_data(IO_CACHE* file)
 {
-  if (my_fwrite(file, (byte*) new_log_ident, (uint) ident_len,
-		MYF(MY_NABP | MY_WME)))
-    return -1;
-  return 0;
+  return my_b_write(file, (byte*) new_log_ident, (uint) ident_len) ? -1 :0;
 }
 
-Query_log_event::Query_log_event(FILE* file, time_t when_arg,
+Query_log_event::Query_log_event(IO_CACHE* file, time_t when_arg,
 				 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;
-  if (my_fread(file, (byte*) buf, sizeof(buf), MYF(MY_NABP | MY_WME)))
+  if (my_b_read(file, (byte*) buf, sizeof(buf)))
     return;				// query == NULL will tell the
 					// caller there was a problem
   data_len = uint4korr(buf);
@@ -399,9 +381,10 @@ Query_log_event::Query_log_event(FILE* file, time_t when_arg,
   db_len = (uint)buf[12];
   error_code = uint2korr(buf + 13);
   
+  /* Allocate one byte extra for end \0 */
   if (!(data_buf = (char*) my_malloc(data_len+1, MYF(MY_WME))))
     return;
-  if (my_fread( file, (byte*) data_buf, data_len, MYF(MY_NABP | MY_WME)))
+  if (my_b_read( file, (byte*) data_buf, data_len))
   {
     my_free((gptr) data_buf, MYF(0));
     data_buf = 0;
@@ -412,7 +395,7 @@ Query_log_event::Query_log_event(FILE* file, time_t when_arg,
   db = data_buf;
   query=data_buf + db_len + 1;
   q_len = data_len - 1 - db_len;
-  *((char*)query + q_len) = 0;
+  *((char*) query + q_len) = 0;			// Safety
 }
 
 Query_log_event::Query_log_event(const char* buf, int max_buf):
@@ -428,7 +411,7 @@ Query_log_event::Query_log_event(const char* buf, int max_buf):
   exec_time = uint4korr(buf + 8);
   error_code = uint2korr(buf + 13);
 
-  if (!(data_buf = (char*) my_malloc( data_len + 1, MYF(MY_WME))))
+  if (!(data_buf = (char*) my_malloc(data_len + 1, MYF(MY_WME))))
     return;
 
   memcpy(data_buf, buf + QUERY_HEADER_LEN + 4, data_len);
@@ -455,9 +438,9 @@ void Query_log_event::print(FILE* file, bool short_form)
   fprintf(file, ";\n");
 }
 
-int Query_log_event::write_data(FILE* file)
+int Query_log_event::write_data(IO_CACHE* file)
 {
-  if(!query) return -1;
+  if (!query) return -1;
   
   char buf[QUERY_HEADER_LEN]; 
   char* pos = buf;
@@ -469,23 +452,21 @@ int Query_log_event::write_data(FILE* file)
   int2store(pos, error_code);
   pos += 2;
 
-  if (my_fwrite(file, (byte*) buf, (uint)(pos - buf), MYF(MY_NABP | MY_WME)) ||
-      my_fwrite(file, (db) ? (byte*) db : (byte*)"",
-		db_len + 1, MYF(MY_NABP | MY_WME)) ||
-      my_fwrite(file, (byte*) query, q_len, MYF(MY_NABP | MY_WME)))
-    return -1;
-  return 0;
+  return (my_b_write(file, (byte*) buf, (uint)(pos - buf)) ||
+	  my_b_write(file, (db) ? (byte*) db : (byte*)"", db_len + 1) ||
+	  my_b_write(file, (byte*) query, q_len)) ? -1 : 0;
 }
 
-Intvar_log_event:: Intvar_log_event(FILE* file, time_t when_arg,
+Intvar_log_event:: Intvar_log_event(IO_CACHE* file, time_t when_arg,
 				    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];
-  if(my_fread(file, (byte*)buf, sizeof(buf), MYF(MY_NABP|MY_WME))) return;
-  type = buf[0];
-  val = uint8korr(buf+1);
+  char buf[9+4];
+  if (!my_b_read(file, (byte*) buf, sizeof(buf)))
+  {
+    type = buf[4];
+    val = uint8korr(buf+1+4);
+  }
 }
 
 Intvar_log_event::Intvar_log_event(const char* buf):Log_event(buf)
@@ -495,12 +476,12 @@ Intvar_log_event::Intvar_log_event(const char* buf):Log_event(buf)
   val = uint8korr(buf+1);
 }
 
-int Intvar_log_event::write_data(FILE* file)
+int Intvar_log_event::write_data(IO_CACHE* file)
 {
   char buf[9];
   buf[0] = type;
   int8store(buf + 1, val);
-  return my_fwrite(file, (byte*) buf, sizeof(buf), MYF(MY_NABP|MY_WME));
+  return my_b_write(file, (byte*) buf, sizeof(buf));
 }
 
 void Intvar_log_event::print(FILE* file, bool short_form)
@@ -527,7 +508,7 @@ void Intvar_log_event::print(FILE* file, bool short_form)
   
 }
 
-int Load_log_event::write_data(FILE* file __attribute__((unused)))
+int Load_log_event::write_data(IO_CACHE* file)
 {
   char buf[LOAD_HEADER_LEN];
   int4store(buf, thread_id);
@@ -537,77 +518,46 @@ int Load_log_event::write_data(FILE* file __attribute__((unused)))
   buf[13] = (char)db_len;
   int4store(buf + 14, num_fields);
   
-  if(my_fwrite(file, (byte*)buf, sizeof(buf), MYF(MY_NABP|MY_WME)) ||
-     my_fwrite(file, (byte*)&sql_ex, sizeof(sql_ex), MYF(MY_NABP|MY_WME)))
+  if(my_b_write(file, (byte*)buf, sizeof(buf)) ||
+     my_b_write(file, (byte*)&sql_ex, sizeof(sql_ex)))
     return 1;
 
-  if(num_fields && fields && field_lens)
-    {
-      if(my_fwrite(file, (byte*)field_lens, num_fields, MYF(MY_NABP|MY_WME)) ||
-         my_fwrite(file, (byte*)fields, field_block_len, MYF(MY_NABP|MY_WME)))
-	return 1;
-    }
-  
-  if(my_fwrite(file, (byte*)table_name, table_name_len + 1, MYF(MY_NABP|MY_WME)) ||
-     my_fwrite(file, (byte*)db, db_len + 1, MYF(MY_NABP|MY_WME)) ||
-     my_fwrite(file, (byte*)fname, fname_len, MYF(MY_NABP|MY_WME)) )
+  if (num_fields && fields && field_lens)
+  {
+    if(my_b_write(file, (byte*)field_lens, num_fields) ||
+       my_b_write(file, (byte*)fields, field_block_len))
+      return 1;
+  }
+  if(my_b_write(file, (byte*)table_name, table_name_len + 1) ||
+     my_b_write(file, (byte*)db, db_len + 1) ||
+     my_b_write(file, (byte*)fname, fname_len))
     return 1;
-
-     
   return 0;
 }
 
-Load_log_event::Load_log_event(FILE* file, time_t when, uint32 server_id):
+Load_log_event::Load_log_event(IO_CACHE* file, time_t when, uint32 server_id):
   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)
-							
 {
   char buf[LOAD_HEADER_LEN + 4];
   ulong data_len;
-  if(my_fread(file, (byte*)buf, sizeof(buf), MYF(MY_NABP|MY_WME)) ||
-     my_fread(file, (byte*)&sql_ex, sizeof(sql_ex), MYF(MY_NABP|MY_WME)))
-    return;
-
-  data_len = uint4korr(buf);
-  thread_id = uint4korr(buf+4);
-  exec_time = uint4korr(buf+8);
-  skip_lines = uint4korr(buf + 12);
-  table_name_len = (uint)buf[16];
-  db_len = (uint)buf[17];
-  num_fields = uint4korr(buf + 18);
-	  
-  data_len -= LOAD_EVENT_OVERHEAD;
-  if(!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
+  if (my_b_read(file, (byte*)buf, sizeof(buf)) ||
+      my_b_read(file, (byte*)&sql_ex, sizeof(sql_ex)))
     return;
 
-  if(my_fread(file, (byte*)data_buf, data_len, MYF(MY_NABP|MY_WME)))
+  data_len = uint4korr(buf) - LOAD_EVENT_OVERHEAD;
+  if (!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
     return;
-
-  if(num_fields > data_len) // simple sanity check against corruption
+  if (my_b_read(file, (byte*)data_buf, data_len))
     return;
-
-  field_lens = (uchar*)data_buf;
-  
-  uint i;
-  for(i = 0; i < num_fields; i++)
-    {
-      field_block_len += (uint)field_lens[i] + 1;
-    }
-  fields = (char*)field_lens + num_fields;
-  
-  *((char*)data_buf+data_len) = 0;
-  table_name  = fields + field_block_len;
-  db = table_name + table_name_len + 1;
-  fname = db + db_len + 1;
-  fname_len = data_len - 2 - db_len - table_name_len - num_fields - field_block_len;
+  copy_log_event(buf,data_len);
 }
 
 Load_log_event::Load_log_event(const char* buf, int max_buf):
   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)
-							     
 {
   ulong data_len;
 
@@ -617,9 +567,19 @@ Load_log_event::Load_log_event(const char* buf, int max_buf):
   buf += EVENT_LEN_OFFSET;
   
   data_len = uint4korr(buf);
-  if((uint)data_len > (uint)max_buf)
+  if ((uint)data_len > (uint) max_buf)
     return;
+  data_len -= LOAD_EVENT_OVERHEAD;
+  memcpy(&sql_ex, buf + 22, sizeof(sql_ex));
   
+  if(!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
+    return;
+  memcpy(data_buf, buf + 22 + sizeof(sql_ex), data_len);
+  copy_log_event(buf, data_len);
+}
+
+void Load_log_event::copy_log_event(const char *buf, ulong data_len)
+{
   thread_id = uint4korr(buf+4);
   exec_time = uint4korr(buf+8);
   skip_lines = uint4korr(buf + 12);
@@ -627,32 +587,23 @@ Load_log_event::Load_log_event(const char* buf, int max_buf):
   db_len = (uint)buf[17];
   num_fields = uint4korr(buf + 18);
 	  
-  data_len -= LOAD_EVENT_OVERHEAD;
-  memcpy(&sql_ex, buf + 22, sizeof(sql_ex));
-  
-  if(!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
+  if (num_fields > data_len) // simple sanity check against corruption
     return;
 
-  memcpy(data_buf, buf + 22 + sizeof(sql_ex), data_len);
-
-  if(num_fields > data_len) // simple sanity check against corruption
-    return;
-
-  field_lens = (uchar*)data_buf;
-  
+  field_lens = (uchar*) data_buf;
   uint i;
-  for(i = 0; i < num_fields; i++)
-    {
-      field_block_len += (uint)field_lens[i] + 1;
-    }
+  for (i = 0; i < num_fields; i++)
+  {
+    field_block_len += (uint)field_lens[i] + 1;
+  }
   fields = (char*)field_lens + num_fields;
   
   *((char*)data_buf+data_len) = 0;
   table_name  = fields + field_block_len;
   db = table_name + table_name_len + 1;
   fname = db + db_len + 1;
-  fname_len = data_len - 2 - db_len - table_name_len - num_fields - field_block_len;
-  
+  fname_len = data_len - 2 - db_len - table_name_len - num_fields -
+    field_block_len;
 }
 
 
@@ -711,21 +662,21 @@ void Load_log_event::print(FILE* file, bool short_form)
   if((int)skip_lines > 0)
     fprintf(file, " IGNORE %ld LINES ", skip_lines);
 
-  if(num_fields)
+  if (num_fields)
+  {
+    uint i;
+    const char* field = fields;
+    fprintf( file, " (");
+    for(i = 0; i < num_fields; i++)
     {
-      uint i;
-      const char* field = fields;
-      fprintf( file, " (");
-      for(i = 0; i < num_fields; i++)
-	{
-	  if(i)
-	    fputc(',', file);
-	  fprintf(file, field);
+      if(i)
+	fputc(',', file);
+      fprintf(file, field);
 	  
-	  field += field_lens[i]  + 1;
-	}
-      fputc(')', file);
+      field += field_lens[i]  + 1;
     }
+    fputc(')', file);
+  }
 
   fprintf(file, ";\n");
 }
diff --git a/sql/log_event.h b/sql/log_event.h
index 4b2739d1592..e903e9b39d9 100644
--- a/sql/log_event.h
+++ b/sql/log_event.h
@@ -65,9 +65,9 @@ public:
   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; }
+  int write(IO_CACHE* file);
+  int write_header(IO_CACHE* file);
+  virtual int write_data(IO_CACHE* 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, uint32 server_id = 0): when(when_arg),
@@ -92,11 +92,11 @@ public:
   void print_header(FILE* file);
 
   // if mutex is 0, the read will proceed without mutex
-  static Log_event* read_log_event(FILE* file, pthread_mutex_t* log_lock);
+  static Log_event* read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock);
   static Log_event* read_log_event(const char* buf, int max_buf);
 
 #ifndef MYSQL_CLIENT
-  static int read_log_event(FILE* file, String* packet,
+  static int read_log_event(IO_CACHE* file, String* packet,
 			    pthread_mutex_t* log_lock);
 #endif
   
@@ -132,18 +132,18 @@ public:
   }
 #endif
 
-  Query_log_event(FILE* file, time_t when, uint32 server_id);
+  Query_log_event(IO_CACHE* file, time_t when, uint32 server_id);
   Query_log_event(const char* buf, int max_buf);
   ~Query_log_event()
   {
     if (data_buf)
     {
-      my_free((gptr)data_buf, MYF(0));
+      my_free((gptr) data_buf, MYF(0));
     }
   }
   Log_event_type get_type_code() { return QUERY_EVENT; }
-  int write(FILE* file);
-  int write_data(FILE* file); // returns 0 on success, -1 on error
+  int write(IO_CACHE* file);
+  int write_data(IO_CACHE* file); // returns 0 on success, -1 on error
   int get_data_size()
   {
     return q_len + db_len + 2 +
@@ -183,6 +183,8 @@ class Load_log_event: public Log_event
 {
 protected:
   char* data_buf;
+  void Load_log_event::copy_log_event(const char *buf, ulong data_len);
+
 public:
   int thread_id;
   uint32 table_name_len;
@@ -272,17 +274,17 @@ public:
   void set_fields(List<Item> &fields);
 #endif
 
-  Load_log_event(FILE* file, time_t when, uint32 server_id);
+  Load_log_event(IO_CACHE * file, time_t when, uint32 server_id);
   Load_log_event(const char* buf, int max_buf);
   ~Load_log_event()
   {
     if (data_buf)
     {
-      my_free((gptr)data_buf, MYF(0));
+      my_free((gptr) data_buf, MYF(0));
     }
   }
   Log_event_type get_type_code() { return LOAD_EVENT; }
-  int write_data(FILE* file); // returns 0 on success, -1 on error
+  int write_data(IO_CACHE* file); // returns 0 on success, -1 on error
   int get_data_size()
   {
     return table_name_len + 2 + db_len + 2 + fname_len
@@ -311,30 +313,26 @@ public:
     created = (uint32) when;
     memcpy(server_version, ::server_version, sizeof(server_version));
   }
-  Start_log_event(FILE* file, time_t when_arg, uint32 server_id) :
+  Start_log_event(IO_CACHE* 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)))
+	    sizeof(created)+4];
+    if (my_b_read(file, (byte*) buf, sizeof(buf)))
       return;				
-    binlog_version = uint2korr(buf);
-    memcpy(server_version, buf + 2, sizeof(server_version));
-    created = uint4korr(buf + 2 + sizeof(server_version));
+    binlog_version = uint2korr(buf+4);
+    memcpy(server_version, buf + 6, sizeof(server_version));
+    created = uint4korr(buf + 6 + sizeof(server_version));
   }
   Start_log_event(const char* buf);
   
   ~Start_log_event() {}
   Log_event_type get_type_code() { return START_EVENT;}
-  int write_data(FILE* file)
+  int write_data(IO_CACHE* 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)))
+    if (my_b_write(file, (byte*) &binlog_version, sizeof(binlog_version)) ||
+	my_b_write(file, (byte*) server_version, sizeof(server_version)) ||
+	my_b_write(file, (byte*) &created, sizeof(created)))
       return -1;
     return 0;
   }
@@ -354,12 +352,12 @@ 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, uint32 server_id);
+  Intvar_log_event(IO_CACHE* 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;}
   int get_data_size() { return  sizeof(type) + sizeof(val);}
-  int write_data(FILE* file);
+  int write_data(IO_CACHE* file);
   
   
   void print(FILE* file, bool short_form = 0);
@@ -370,10 +368,11 @@ class Stop_log_event: public Log_event
 public:
   Stop_log_event() :Log_event(time(NULL))
   {}
-  Stop_log_event(FILE* file, time_t when_arg, uint32 server_id):
+  Stop_log_event(IO_CACHE* 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
+    char skip[4];
+    my_b_read(file, skip, sizeof(skip));	// skip the event length
   }
   Stop_log_event(const char* buf):Log_event(buf)
   {
@@ -397,7 +396,7 @@ public:
     alloced(0)
   {}
   
-  Rotate_log_event(FILE* file, time_t when, uint32 server_id) ;
+  Rotate_log_event(IO_CACHE* file, time_t when, uint32 server_id) ;
   Rotate_log_event(const char* buf, int max_buf);
   ~Rotate_log_event()
   {
@@ -406,7 +405,7 @@ public:
   }
   Log_event_type get_type_code() { return ROTATE_EVENT;}
   int get_data_size() { return  ident_len;}
-  int write_data(FILE* file);
+  int write_data(IO_CACHE* file);
   
   void print(FILE* file, bool short_form = 0);
 };
diff --git a/sql/mf_iocache.cc b/sql/mf_iocache.cc
index 49df40adaf6..47c00a8ac00 100644
--- a/sql/mf_iocache.cc
+++ b/sql/mf_iocache.cc
@@ -32,17 +32,19 @@
 
 #define MAP_TO_USE_RAID
 #include "mysql_priv.h"
-#include <mysys_err.h>
 #ifdef HAVE_AIOWAIT
+#include <mysys_err.h>
 #include <errno.h>
 static void my_aiowait(my_aio_result *result);
 #endif
 
-	/* if cachesize == 0 then use default cachesize (from s-file) */
-	/* returns 0 if we have enough memory */
-
 extern "C" {
 
+	/*
+	** if cachesize == 0 then use default cachesize (from s-file)
+	** if file == -1 then real_open_cached_file() will be called.
+	** returns 0 if ok
+	*/
 
 int init_io_cache(IO_CACHE *info, File file, uint cachesize,
 		  enum cache_type type, my_off_t seek_offset,
@@ -60,20 +62,26 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
   min_cache=use_async_io ? IO_SIZE*4 : IO_SIZE*2;
   if (type == READ_CACHE)
   {						/* Assume file isn't growing */
-    my_off_t file_pos,end_of_file;
-    if ((file_pos=my_tell(file,MYF(0)) == MY_FILEPOS_ERROR))
-      DBUG_RETURN(1);
-    end_of_file=my_seek(file,0L,MY_SEEK_END,MYF(0));
-    if (end_of_file < seek_offset)
-      end_of_file=seek_offset;
-    VOID(my_seek(file,file_pos,MY_SEEK_SET,MYF(0)));
-    if ((my_off_t) cachesize > end_of_file-seek_offset+IO_SIZE*2-1)
+    if (cache_myflags & MY_DONT_CHECK_FILESIZE)
+    {
+      cache_myflags &= ~MY_DONT_CHECK_FILESIZE;
+    }
+    else
     {
-      cachesize=(uint) (end_of_file-seek_offset)+IO_SIZE*2-1;
-      use_async_io=0;				/* No nead to use async */
+      my_off_t file_pos,end_of_file;
+      if ((file_pos=my_tell(file,MYF(0)) == MY_FILEPOS_ERROR))
+	DBUG_RETURN(1);
+      end_of_file=my_seek(file,0L,MY_SEEK_END,MYF(0));
+      if (end_of_file < seek_offset)
+	end_of_file=seek_offset;
+      VOID(my_seek(file,file_pos,MY_SEEK_SET,MYF(0)));
+      if ((my_off_t) cachesize > end_of_file-seek_offset+IO_SIZE*2-1)
+      {
+	cachesize=(uint) (end_of_file-seek_offset)+IO_SIZE*2-1;
+	use_async_io=0;				/* No nead to use async */
+      }
     }
   }
-
   if ((int) type < (int) READ_NET)
   {
     for (;;)
@@ -167,7 +175,8 @@ my_bool reinit_io_cache(IO_CACHE *info, enum cache_type type,
   DBUG_ENTER("reinit_io_cache");
 
   info->seek_not_done= test(info->file >= 0);	/* Seek not done */
-  if (!clear_cache && seek_offset >= info->pos_in_file &&
+  if (! clear_cache &&
+      seek_offset >= info->pos_in_file &&
       seek_offset <= info->pos_in_file +
       (uint) (info->rc_end - info->rc_request_pos))
   {						/* use current buffer */
@@ -231,6 +240,7 @@ int _my_b_read(register IO_CACHE *info, byte *Buffer, uint Count)
 {
   uint length,diff_length,left_length;
   my_off_t max_length, pos_in_file;
+
   memcpy(Buffer,info->rc_pos,
 	 (size_t) (left_length=(uint) (info->rc_end-info->rc_pos)));
   Buffer+=left_length;
@@ -607,7 +617,9 @@ int flush_io_cache(IO_CACHE *info)
       length=(uint) (info->rc_pos - info->buffer);
       if (info->seek_not_done)
       {					/* File touched, do seek */
-	VOID(my_seek(info->file,info->pos_in_file,MY_SEEK_SET,MYF(0)));
+	if (my_seek(info->file,info->pos_in_file,MY_SEEK_SET,MYF(0)) ==
+	    MY_FILEPOS_ERROR)
+	  DBUG_RETURN((info->error= -1));
 	info->seek_not_done=0;
       }
       info->rc_pos=info->buffer;
@@ -644,4 +656,4 @@ int end_io_cache(IO_CACHE *info)
   DBUG_RETURN(error);
 } /* end_io_cache */
 
-}
+} /* extern "C" */
diff --git a/sql/mysqlbinlog.cc b/sql/mysqlbinlog.cc
index 179bc717093..6c543d0bbf6 100644
--- a/sql/mysqlbinlog.cc
+++ b/sql/mysqlbinlog.cc
@@ -55,7 +55,7 @@ static struct option long_options[] =
   {"password", required_argument,0, 'p'},
   {"position", required_argument,0, 'j'},
 #ifndef DBUG_OFF
-  {"debug", required_argument, 0, '#'}
+  {"debug", optional_argument, 0, '#'}
 #endif
 };
 
@@ -151,7 +151,7 @@ static int parse_args(int *argc, char*** argv)
 {
   int c, opt_index = 0;
 
-  while((c = getopt_long(*argc, *argv, "so:#:h:j:u:p:P:t:?", long_options,
+  while((c = getopt_long(*argc, *argv, "so:#::h:j:u:p:P:t:?", long_options,
 			 &opt_index)) != EOF)
   {
     switch(c)
@@ -310,86 +310,106 @@ Unfortunately, no sweepstakes today, adjusted position to 4\n");
 
 static void dump_local_log_entries(const char* logname)
 {
- FILE* file;
- int rec_count = 0;
-
- if(logname && logname[0] != '-')
-   file = my_fopen(logname, O_RDONLY|O_BINARY, MYF(MY_WME));
- else
-   file = stdin;
-
- if(!file)
-   die("Could not open log file %s", logname);
-
- if(my_fseek(file, position, MY_SEEK_SET, MYF(MY_WME)))
-   die("failed on my_fseek()");
-
- if(!position)
-   {
-     char magic[4];
-     if (my_fread(file, (byte*) magic, sizeof(magic), MYF(MY_NABP|MY_WME)))
-       die("I/O error reading binlog magic number");
-     if(memcmp(magic, BINLOG_MAGIC, 4))
-       die("Bad magic number");
+  File fd;
+  IO_CACHE cache,*file= &cache;
+  int rec_count = 0;
+
+  if (logname && logname[0] != '-')
+  {
+    if ((fd = my_open(logname, O_RDONLY | O_BINARY, MYF(MY_WME))) < 0)
+      exit(1);
+    if (init_io_cache(file, fd, 0, READ_CACHE, (my_off_t) position, 0,
+		      MYF(MY_WME | MY_NABP)))
+      exit(1);
+  }
+  else
+  {
+    if (init_io_cache(file, fileno(stdout), 0, READ_CACHE, (my_off_t) 0,
+		      0, MYF(MY_WME | MY_NABP | MY_DONT_CHECK_FILESIZE)))
+      exit(1);
+    if (position)
+    {
+      /* skip 'position' characters from stdout */
+      char buff[IO_SIZE];
+      my_off_t length,tmp;
+      for (length=position ; length > 0 ; length-=tmp)
+      {
+	tmp=min(length,sizeof(buff));
+	if (my_b_read(file,buff,tmp))
+	  exit(1);
+      }
+    }
+    file->pos_in_file=position;
+    file->seek_not_done=0;
+  }
+
+  if (!position)
+  {
+    char magic[4];
+    if (my_b_read(file, (byte*) magic, sizeof(magic)))
+      die("I/O error reading binlog magic number");
+    if(memcmp(magic, BINLOG_MAGIC, 4))
+      die("Bad magic number");
   }
  
- while(1)
-   {
-     Log_event* ev = Log_event::read_log_event(file, 0);
-     if(!ev)
-       if(!feof(file))
+  while(1)
+  {
+    Log_event* ev = Log_event::read_log_event(file, 0);
+    if (!ev)
+    {
+      if (file->error)
 	die("Could not read entry at offset %ld : Error in log format or \
 read error",
-	   my_ftell(file, MYF(MY_WME)));
-       else
-	 break;
-
-     if(rec_count >= offset)
-       ev->print(stdout, short_form);
-     rec_count++;
-     delete ev;
-   }
-
- my_fclose(file, MYF(MY_WME));
+	    my_b_tell(file));
+      break;
+    }
+    if (rec_count >= offset)
+      ev->print(stdout, short_form);
+    rec_count++;
+    delete ev;
+  }
+  my_close(fd, MYF(MY_WME));
+  end_io_cache(file);
 }
 
+
 int main(int argc, char** argv)
 {
   MY_INIT(argv[0]);
   parse_args(&argc, (char***)&argv);
 
   if(!argc && !table)
-    {
-      usage();
-      return -1;
-    }
+  {
+    usage();
+    return -1;
+  }
 
   if(use_remote)
-    {
-      init_thr_alarm(10); // need to do this manually 
-      mysql = safe_connect();
-    }
+  {
+    init_thr_alarm(10); // need to do this manually 
+    mysql = safe_connect();
+  }
 
-  if(table)
-    {
-      if(!use_remote)
-	die("You must specify connection parameter to get table dump");
-      char* db = (char*)table;
-      char* tbl = (char*) strchr(table, '.');
-      if(!tbl)
-	die("You must use database.table syntax to specify the table");
-      *tbl++ = 0;
-      dump_remote_table(&mysql->net, db, tbl);
-    }
+  if (table)
+  {
+    if(!use_remote)
+      die("You must specify connection parameter to get table dump");
+    char* db = (char*)table;
+    char* tbl = (char*) strchr(table, '.');
+    if(!tbl)
+      die("You must use database.table syntax to specify the table");
+    *tbl++ = 0;
+    dump_remote_table(&mysql->net, db, tbl);
+  }
   else
-   while(--argc >= 0)
+  {
+    while(--argc >= 0)
     {
       dump_log_entries(*(argv++));
     }
-
-  if(use_remote)
+  }
+  if (use_remote)
     mc_mysql_close(mysql);
-
   return 0;
 }
 
diff --git a/sql/net_pkg.cc b/sql/net_pkg.cc
index 2308aa40d52..d412b71b363 100644
--- a/sql/net_pkg.cc
+++ b/sql/net_pkg.cc
@@ -319,11 +319,11 @@ bool net_store_data(String* packet, I_List<i_string>* str_list)
   i_string* s;
 
   while((s=it++))
-    {
-      if(tmp.length())
-	tmp.append(',');
-      tmp.append(s->ptr);
-    }
+  {
+    if(tmp.length())
+      tmp.append(',');
+    tmp.append(s->ptr);
+  }
 
   return net_store_data(packet, (char*)tmp.ptr(), tmp.length());
 }
diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index b65c5d1978f..7c0ad74424c 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -113,11 +113,17 @@ THD::THD()
   ull=0;
   system_thread=0;
   bzero((char*) &mem_root,sizeof(mem_root));
+#if defined(HAVE_BDB) || defined(HAVE_INNOBASE) || defined(HAVE_GEMENI)
+  if (open_cached_file(&transactions.trans_log,
+		       mysql_tempdir,LOG_PREFIX,0,MYF(MY_WME)))
+    killed=1;
+  transaction.bdb_lock_count=0;
+#endif
+  transaction.bdb_tid=0;
+
 #ifdef	__WIN__
   real_id = 0 ;
 #endif
-  transaction.bdb_lock_count=0;
-  transaction.bdb_tid=0;
 }
 
 THD::~THD()
@@ -136,6 +142,9 @@ THD::~THD()
     close_thread_tables(this);
   }
   close_temporary_tables(this);
+#if defined(HAVE_BDB) || defined(HAVE_INNOBASE) || defined(HAVE_GEMENI)
+  close_cached_file(transactions.trans_log);
+#endif
   if (global_read_lock)
   {
     pthread_mutex_lock(&LOCK_open);
diff --git a/sql/sql_class.h b/sql/sql_class.h
index 23e518ab790..b18781ca72c 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -82,16 +82,16 @@ typedef struct st_master_info
 } MASTER_INFO;
 
 class MYSQL_LOG {
- public:
  private:
   pthread_mutex_t LOCK_log, LOCK_index;
-  File file, index_file;
   time_t last_time,query_start;
+  IO_CACHE log_file;
+  File index_file;
   char *name;
-  enum_log_type log_type;
+  volatile enum_log_type log_type;
   char time_buff[20],db[NAME_LEN+1];
   char log_file_name[FN_REFLEN],index_file_name[FN_REFLEN];
-  bool write_error,inited;
+  bool write_error,inited,opened;
   bool no_rotate; // for binlog - if log name can never change
   // we should not try to rotate it or write any rotation events
   // the user should use FLUSH MASTER instead of FLUSH LOGS for
@@ -114,7 +114,7 @@ public:
   int generate_new_name(char *new_name,const char *old_name);
   void make_log_name(char* buf, const char* log_ident);
   bool is_active(const char* log_file_name);
-  void flush(void);
+  // void flush(void);
   void close(bool exiting = 0); // if we are exiting, we also want to close the
   // index file
 
@@ -270,6 +270,7 @@ public:
   thr_lock_type update_lock_default;
   delayed_insert *di;
   struct st_transactions {
+    IO_CACHE trans_log;
     void *bdb_tid;
     uint bdb_lock_count;
   } transaction;
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index c76a6be2d26..8322af7953e 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -2439,7 +2439,7 @@ bool reload_acl_and_cache(THD *thd, uint options, TABLE_LIST *tables)
   bool result=0;
 
   select_errors=0;				/* Write if more errors */
-  mysql_log.flush();				// Flush log
+  // mysql_log.flush();				// Flush log
   if (options & REFRESH_GRANT)
   {
     acl_reload();
diff --git a/sql/sql_repl.cc b/sql/sql_repl.cc
index 53a5b00d084..b2b21468017 100644
--- a/sql/sql_repl.cc
+++ b/sql/sql_repl.cc
@@ -93,284 +93,284 @@ static int send_file(THD *thd)
   DBUG_RETURN(error);
 }
 
+
+static File open_log(IO_CACHE *log, const char *log_file_name,
+		     const char **errmsg)
+{
+  File file;
+  char magic[4];
+  if ((file = my_open(log_file_name, O_RDONLY | O_BINARY, MYF(MY_WME))) < 0 ||
+      init_io_cache(log, file, IO_SIZE*2, READ_CACHE, 0, 0,
+		    MYF(MY_WME)))
+  {
+    *errmsg = "Could not open log file";		// This will not be sent
+    goto err;
+  }
+  
+  if (my_b_read(log, (byte*) magic, sizeof(magic)))
+  {
+    *errmsg = "I/O error reading binlog magic number";
+    goto err;
+  }
+  if (memcmp(magic, BINLOG_MAGIC, 4))
+  {
+    *errmsg = "Binlog has bad magic number, fire your magician";
+    goto err;
+  }
+  return file;
+
+err:
+  if (file > 0)
+    my_close(file,MYF(0));
+  end_io_cache(log);
+  return -1;
+}
+
+
 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];
-  char magic[4];
-  FILE* log = NULL;
+  IO_CACHE log;
+  File file = -1;
   String* packet = &thd->packet;
   int error;
   const char *errmsg = "Unknown error";
   NET* net = &thd->net;
-
   DBUG_ENTER("mysql_binlog_send");
 
+  bzero((char*) &log,sizeof(log));
+
   if(!mysql_bin_log.is_open())
-    {
-      errmsg = "Binary log is not open";
-      goto err;
-    }
+  {
+    errmsg = "Binary log is not open";
+    goto err;
+  }
 
-  if(log_ident[0])
+  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|O_BINARY, MYF(MY_WME));
+  if (mysql_bin_log.find_first_log(&linfo, search_file_name))
+  {
+    errmsg = "Could not find first log";
+    goto err;
+  }
 
-  if(!log)
-    {
-      errmsg = "Could not open log file";
-      goto err;
-    }
-  
-  if(my_fread(log, (byte*) magic, sizeof(magic), MYF(MY_NABP|MY_WME)))
-    {
-      errmsg = "I/O error reading binlog magic number";
-      goto err;
-    }
-  if(memcmp(magic, BINLOG_MAGIC, 4))
-    {
-      errmsg = "Binlog has bad magic number, fire your magician";
-      goto err;
-    }
+  if ((file=open_log(&log, log_file_name, &errmsg)) < 0)
+    goto err;
 
   if(pos < 4)
-    {
-      errmsg = "Contratulations! You have hit the magic number and can win \
+  {
+    errmsg = "Contratulations! You have hit the magic number and can win \
 sweepstakes if you report the bug";
-      goto err;
-    }
-  
-  if(my_fseek(log, pos, MY_SEEK_SET, MYF(MY_WME)) == MY_FILEPOS_ERROR )
-    {
-      errmsg = "Error on fseek()";
-      goto err;
-    }
-
-
+    goto err;
+  }
+ 
+  my_b_seek(&log, pos);				// Seek will done on next read
   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)
-    {
-      pthread_mutex_t *log_lock = mysql_bin_log.get_log_lock();
+  {
+    pthread_mutex_t *log_lock = mysql_bin_log.get_log_lock();
       
-      while(!(error = Log_event::read_log_event(log, packet, log_lock)))
-	{
-	  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)
+    while (!(error = Log_event::read_log_event(&log, packet, log_lock)))
+    {
+      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))
 	{
-	  switch(error)
-	    {
-	    case LOG_READ_BOGUS: 
-	      errmsg = "bogus data in log event";
-	      break;
-	    case LOG_READ_IO:
-	      errmsg = "I/O error reading log event";
-	      break;
-	    case LOG_READ_MEM:
-	      errmsg = "memory allocation failed reading log event";
-	      break;
-	    case LOG_READ_TRUNC:
-	      errmsg = "binlog truncated in the middle of event";
-	      break;
-	    }
+	  errmsg = "failed in send_file()";
 	  goto err;
 	}
+      }
+      packet->length(0);
+      packet->append("\0",1);
+    }
+    if(error != LOG_READ_EOF)
+    {
+      switch(error)
+      {
+      case LOG_READ_BOGUS: 
+	errmsg = "bogus data in log event";
+	break;
+      case LOG_READ_IO:
+	errmsg = "I/O error reading log event";
+	break;
+      case LOG_READ_MEM:
+	errmsg = "memory allocation failed reading log event";
+	break;
+      case LOG_READ_TRUNC:
+	errmsg = "binlog truncated in the middle of event";
+	break;
+      }
+      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;
-	    }
+    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
-          {
-	    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;
-
-	    // 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, log_lock))
-	      {
-	      case 0:
-		read_packet = 1;
-		// we read successfully, so we'll need to send it to the
-		// slave
-		break;
-	      case LOG_READ_EOF:
-		pthread_mutex_lock(log_lock);
-	        pthread_cond_wait(&COND_binlog_update, log_lock);
-		pthread_mutex_unlock(log_lock);
-		break;
-
-	      default:
-		fatal_error = 1;
-		break;
-	      }
-
-
-	    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)
-	    {
-	      thd->proc_info = "sending update to slave";
-	      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
-	    }
+      // 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
+      {
+	log.error=0;
 
-	    if(fatal_error)
-	      {
-		errmsg = "error reading log entry";
-	        goto err;
-	      }
+	// 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);
 
-	    clearerr(log);
-	  }
-	}
-      else
+	bool read_packet = 0, fatal_error = 0;
+
+	// 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, log_lock))
 	{
-	  bool loop_breaker = 0;
-	  // need this to break out of the for loop from switch
-          thd->proc_info = "switching to next log";
-	  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;
-	    }
+	case 0:
+	  read_packet = 1;
+	  // we read successfully, so we'll need to send it to the
+	  // slave
+	  break;
+	case LOG_READ_EOF:
+	  pthread_mutex_lock(log_lock);
+	  pthread_cond_wait(&COND_binlog_update, log_lock);
+	  pthread_mutex_unlock(log_lock);
+	  break;
+
+	default:
+	  fatal_error = 1;
+	  break;
+	}
 
-	  if(loop_breaker)
-	   break;
 
-	  (void) my_fclose(log, MYF(MY_WME));
-	  log = my_fopen(log_file_name, O_RDONLY|O_BINARY, MYF(MY_WME));
-	  if(!log)
-	    {
-	      errmsg = "Could not open next log";
-	      goto err;
-	    }
+	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);
 
-	  //check the magic
-	  if(my_fread(log, (byte*) magic, sizeof(magic), MYF(MY_NABP|MY_WME)))
-	    {
-	      errmsg = "I/O error reading binlog magic number";
-	      goto err;
-	    }
-	  if(memcmp(magic, BINLOG_MAGIC, 4))
+	if(read_packet)
+	{
+	  thd->proc_info = "sending update to slave";
+	  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 = "Binlog has bad magic number, fire your magician";
+	      errmsg = "failed in send_file()";
 	      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[LOG_EVENT_HEADER_LEN];
-	    memset(header, 0, 4); // when does not matter
-	    header[EVENT_TYPE_OFFSET] = 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 + EVENT_TYPE_OFFSET + 1, server_id);
-	    int4store(header + EVENT_LEN_OFFSET, 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);
 	  }
+	  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;
+	}
+	log.error=0;
+      }
+    }
+    else
+    {
+      bool loop_breaker = 0;
+      // need this to break out of the for loop from switch
+      thd->proc_info = "switching to next log";
+      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;
+
+      end_io_cache(&log);
+      (void) my_close(file, MYF(MY_WME));
+      if ((file=open_log(&log, log_file_name, &errmsg)) < 0)
+	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[LOG_EVENT_HEADER_LEN];
+	memset(header, 0, 4); // when does not matter
+	header[EVENT_TYPE_OFFSET] = 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 + EVENT_TYPE_OFFSET + 1, server_id);
+	int4store(header + EVENT_LEN_OFFSET, 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));
+  end_io_cache(&log);
+  (void)my_close(file, MYF(MY_WME));
   
   send_eof(&thd->net);
   thd->proc_info = "waiting to finalize termination";
   DBUG_VOID_RETURN;
  err:
   thd->proc_info = "waiting to finalize termination";
-  if(log)
-   (void) my_fclose(log, MYF(MY_WME));
+  end_io_cache(&log);
+  if (file >= 0)
+    (void) my_close(file, MYF(MY_WME));
   send_error(&thd->net, 0, errmsg);
   DBUG_VOID_RETURN;
 }
diff --git a/sql/sql_string.cc b/sql/sql_string.cc
index 7ca2d3c419e..4b9ebef21f1 100644
--- a/sql/sql_string.cc
+++ b/sql/sql_string.cc
@@ -95,17 +95,6 @@ bool String::realloc(uint32 alloc_length)
   return FALSE;
 }
 
-
-#ifdef NOT_NEEDED
-bool String::set(long num)
-{
-  if (alloc(14))
-    return TRUE;
-  str_length=(uint32) (int10_to_str(num,Ptr,-10)-Ptr);
-  return FALSE;
-}
-#endif
-
 bool String::set(longlong num)
 {
   if (alloc(21))
@@ -274,6 +263,7 @@ bool String::append(const char *s,uint32 arg_length)
   return FALSE;
 }
 
+#ifdef TO_BE_REMOVED
 bool String::append(FILE* file, uint32 arg_length, myf my_flags)
 {
   if (realloc(str_length+arg_length))
@@ -286,6 +276,20 @@ bool String::append(FILE* file, uint32 arg_length, myf my_flags)
   str_length+=arg_length;
   return FALSE;
 }
+#endif
+
+bool String::append(IO_CACHE* file, uint32 arg_length)
+{
+  if (realloc(str_length+arg_length))
+    return TRUE;
+  if (my_b_read(file, (byte*) Ptr + str_length, arg_length))
+  {
+    shrink(str_length);
+    return TRUE;
+  }
+  str_length+=arg_length;
+  return FALSE;
+}
 
 uint32 String::numchars()
 {
diff --git a/sql/sql_string.h b/sql/sql_string.h
index 45c82b82dd0..74dbc4cc6bd 100644
--- a/sql/sql_string.h
+++ b/sql/sql_string.h
@@ -152,7 +152,7 @@ public:
   bool copy(const char *s,uint32 arg_length);	// Allocate new string
   bool append(const String &s);
   bool append(const char *s,uint32 arg_length=0);
-  bool append(FILE* file, uint32 arg_length, myf my_flags);
+  bool append(IO_CACHE* file, uint32 arg_length);
   int strstr(const String &search,uint32 offset=0); // Returns offset to substring or -1
   int strrstr(const String &search,uint32 offset=0); // Returns offset to substring or -1
   bool replace(uint32 offset,uint32 arg_length,const String &to);
diff --git a/sql/time.cc b/sql/time.cc
index 17603d93dd4..ce4b5b0e30c 100644
--- a/sql/time.cc
+++ b/sql/time.cc
@@ -413,16 +413,6 @@ ulong convert_month_to_period(ulong month)
   return year*100+month%12+1;
 }
 
-#ifdef NOT_NEEDED
-
-ulong add_to_period(ulong period,int months)
-{
-  if (period == 0L)
-    return 0L;
-  return convert_month_to_period(convert_period_to_month(period)+months);
-}
-#endif
-
 
 /*****************************************************************************
 ** convert a timestamp string to a TIME value.
author	unknown <monty@narttu.mysql.fi>	2000-11-15 23:00:06 +0200
committer	unknown <monty@narttu.mysql.fi>	2000-11-15 23:00:06 +0200
commit	9a846a52ae62f701c2d54d3f468e2ead393acf91 (patch)
tree	622092bf596b26a1f762020729c03d573a5b216d
parent	f3d2341f1f30384d92b285c1e421d8c599ee2b79 (diff)
download	mariadb-git-9a846a52ae62f701c2d54d3f468e2ead393acf91.tar.gz