work to enable reading 3.23 logs - not yet finished

moved fail-safe replication routines from sql_repl.cc to repl_failsafe.cc
write start event only in the first log


client/mysqlbinlog.cc:
  work to enable reading 3.23 logs
libmysql/Makefile.shared:
  added mf_iocache2 to libmysqlclient - needed for mysqlbinlog
mysql-test/mysql-test-run.sh:
  added --start-and-exit
mysql-test/r/rpl000002.result:
  result clean-up
mysql-test/r/rpl000016.result:
  result update
mysql-test/r/rpl_log.result:
  result update
mysql-test/t/rpl000016.test:
  test cleanup
mysys/mf_iocache.c:
  fixed new bug
sql/log.cc:
  write start event only on server start or after reset master
sql/log_event.cc:
  work to enable reading 3.23 log format
sql/log_event.h:
  work to enable reading 3.23 format
sql/repl_failsafe.cc:
  code restructuring
sql/repl_failsafe.h:
  re-organized code
sql/slave.cc:
  check master version
sql/slave.h:
  old_format member
sql/sql_class.h:
  allow user to specify io cache type
  need_start_event member to allow writing start event only in the first log
sql/sql_parse.cc:
  code re-organization
sql/sql_repl.cc:
  code reorganization
sql/sql_repl.h:
  reorganized code

1 files changed, 7 insertions, 1 deletions

diff --git a/mysys/mf_iocache.c b/mysys/mf_iocache.c
index f9b668ce09f..f29df74b651 100644
--- a/mysys/mf_iocache.c
+++ b/mysys/mf_iocache.c
@@ -166,7 +166,8 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
   info->seek_not_done= test(file >= 0 && type != READ_FIFO &&
 			    type != READ_NET);
   info->myflags=cache_myflags & ~(MY_NABP | MY_FNABP);
-  info->rc_request_pos=info->rc_pos=info->buffer;
+  info->rc_request_pos=info->rc_pos= info->write_pos = info->buffer;
+  info->write_pos = info->write_end = 0;
   if (type == SEQ_READ_APPEND)
   {
     info->append_read_pos = info->write_pos = info->append_buffer;
@@ -308,6 +309,11 @@ my_bool reinit_io_cache(IO_CACHE *info, enum cache_type type,
   {
     info->append_read_pos = info->write_pos = info->append_buffer;
   }
+  if (!info->write_pos)
+    info->write_pos = info->buffer;
+  if (!info->write_end)
+    info->write_end = info->buffer+info->buffer_length-
+      (seek_offset & (IO_SIZE-1));
   info->type=type;
   info->error=0;
   init_read_function(info,type);