Merge mysql.com:/home/hf/work/31305/my41-31305

into  mysql.com:/home/hf/work/31305/my50-31305


BitKeeper/etc/ignore:
  auto-union
myisam/mi_dynrec.c:
  Auto merged

.bzrignore

@@ -4,8 +4,6 @@
 *.bb
 *.bbg
 *.bin
-*.vcproj.cmake
-cmake_install.cmake
 *.cdf
 *.core
 *.d
@@ -33,6 +31,7 @@ cmake_install.cmake
 *.spec
 *.user
 *.vcproj
+*.vcproj.cmake
 */*.dir/*
 */*_pure_*warnings
 */.deps
@@ -347,6 +346,7 @@ client/tmp.diff
 client_debug/*
 client_release/*
 client_test
+cmake_install.cmake
 cmd-line-utils/libedit/common.h
 cmd-line-utils/libedit/makelist
 comon.h
@@ -366,6 +366,9 @@ contrib/*.vcproj
 core
 core.*
 core.2430
+cscope.in.out
+cscope.out
+cscope.po.out
 db-*.*.*
 dbug/*.ds?
 dbug/*.vcproj
@@ -377,6 +380,8 @@ dbug/main.r
 dbug/output*.r
 dbug/user.ps
 dbug/user.t
+debian/control
+debian/defs.mk
 depcomp
 emacs.h
 examples/*.ds?
@@ -413,6 +418,7 @@ heap/hp_test2
 help
 help.c
 help.h
+include/abi_check
 include/check_abi
 include/my_config.h
 include/my_global.h
@@ -472,6 +478,7 @@ libmysql/release/libmysql.exp
 libmysql/vio_priv.h
 libmysql_r/*.c
 libmysql_r/acconfig.h
+libmysql_r/client_settings.h
 libmysql_r/conf_to_src
 libmysql_r/my_static.h
 libmysql_r/mysys_priv.h
@@ -1257,6 +1264,7 @@ support-files/mysql-3.23.29-gamma.spec
 support-files/mysql-log-rotate
 support-files/mysql.server
 support-files/mysql.spec
+support-files/mysqld_multi.server
 support-files/ndb-config-2-node.ini
 tags
 test/ndbapi/bank/bankCreator
@@ -1315,6 +1323,7 @@ test_xml
 tests/*.ds?
 tests/*.vcproj
 tests/.libs -prune
+tests/bug25714
 tests/client_test
 tests/connect_test
 tests/mysql_client_test
@@ -1342,11 +1351,3 @@ win/vs71cache.txt
 win/vs8cache.txt
 zlib/*.ds?
 zlib/*.vcproj
-debian/control
-debian/defs.mk
-include/abi_check
-support-files/mysqld_multi.server
-tests/bug25714
-cscope.in.out
-cscope.out
-cscope.po.out

myisam/mi_dynrec.c

@@ -144,6 +144,29 @@ static int write_dynamic_record(MI_INFO *info, const byte *record,
   DBUG_ENTER("write_dynamic_record");
 
   flag=0;
+
+  /*
+    Check if we have enough room for the new record.
+    First we do simplified check to make usual case faster.
+    Then we do more precise check for the space left.
+    Though it still is not absolutely precise, as
+    we always use MI_MAX_DYN_BLOCK_HEADER while it can be
+    less in the most of the cases.
+  */
+
+  if (unlikely(info->s->base.max_data_file_length -
+               info->state->data_file_length <
+               reclength + MI_MAX_DYN_BLOCK_HEADER))
+  {
+    if (info->s->base.max_data_file_length - info->state->data_file_length +
+        info->state->empty - info->state->del * MI_MAX_DYN_BLOCK_HEADER <
+        reclength + MI_MAX_DYN_BLOCK_HEADER)
+    {
+      my_errno=HA_ERR_RECORD_FILE_FULL;
+      DBUG_RETURN(1);
+    }
+  }
+
   do
   {
     if (_mi_find_writepos(info,reclength,&filepos,&length))
@@ -580,6 +603,51 @@ static int update_dynamic_record(MI_INFO *info, my_off_t filepos, byte *record,
   DBUG_ENTER("update_dynamic_record");
 
   flag=block_info.second_read=0;
+  /*
+     Check if we have enough room for the record.
+     First we do simplified check to make usual case faster.
+     Then we do more precise check for the space left.
+     Though it still is not absolutely precise, as
+     we always use MI_MAX_DYN_BLOCK_HEADER while it can be
+     less in the most of the cases.
+  */
+
+  /*
+    compare with just the reclength as we're going
+    to get some space from the old replaced record
+  */
+  if (unlikely(info->s->base.max_data_file_length -
+        info->state->data_file_length < reclength))
+  {
+    /*
+       let's read the old record's block to find out the length of the
+       old record
+    */
+    if ((error=_mi_get_block_info(&block_info,info->dfile,filepos))
+        & (BLOCK_DELETED | BLOCK_ERROR | BLOCK_SYNC_ERROR | BLOCK_FATAL_ERROR))
+    {
+      DBUG_PRINT("error",("Got wrong block info"));
+      if (!(error & BLOCK_FATAL_ERROR))
+        my_errno=HA_ERR_WRONG_IN_RECORD;
+      goto err;
+    }
+
+    /*
+      if new record isn't longer, we can go on safely
+    */
+    if (block_info.rec_len < reclength)
+    {
+      if (info->s->base.max_data_file_length - info->state->data_file_length +
+          info->state->empty - info->state->del * MI_MAX_DYN_BLOCK_HEADER <
+          reclength - block_info.rec_len + MI_MAX_DYN_BLOCK_HEADER)
+      {
+        my_errno=HA_ERR_RECORD_FILE_FULL;
+        goto err;
+      }
+    }
+    block_info.second_read=0;
+  }
+
   while (reclength > 0)
   {
     if (filepos != info->s->state.dellink)

mysql-test/r/almost_full.result

+drop table if exists t1;
+set global myisam_data_pointer_size=2;
+CREATE TABLE t1 (a int auto_increment primary key not null, b longtext) ENGINE=MyISAM;
+DELETE FROM t1 WHERE a=1 or a=5;
+INSERT INTO t1 SET b=repeat('a',600);
+ERROR HY000: The table 't1' is full
+CHECK TABLE t1 EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	warning	Datafile is almost full, 65448 of 65534 used
+test.t1	check	status	OK
+UPDATE t1 SET b=repeat('a', 800) where a=10;
+ERROR HY000: The table 't1' is full
+CHECK TABLE t1 EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	warning	Datafile is almost full, 65448 of 65534 used
+test.t1	check	status	OK
+INSERT INTO t1 SET b=repeat('a',400);
+CHECK TABLE t1 EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	warning	Datafile is almost full, 65448 of 65534 used
+test.t1	check	status	OK
+DELETE FROM t1 WHERE a=2 or a=6;
+UPDATE t1 SET b=repeat('a', 600) where a=11;
+CHECK TABLE t1 EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	warning	Datafile is almost full, 65448 of 65534 used
+test.t1	check	status	OK
+drop table t1;
+set global myisam_data_pointer_size=default;

mysql-test/t/almost_full.test

+#
+# Some special cases with empty tables
+#
+
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+set global myisam_data_pointer_size=2;
+CREATE TABLE t1 (a int auto_increment primary key not null, b longtext) ENGINE=MyISAM;
+
+--disable_query_log
+let $1= 303;
+while ($1)
+{
+  INSERT INTO t1 SET b=repeat('a',200);
+  dec $1;
+}
+--enable_query_log
+
+DELETE FROM t1 WHERE a=1 or a=5;
+
+--error 1114
+INSERT INTO t1 SET b=repeat('a',600);
+CHECK TABLE t1 EXTENDED;
+
+--error 1114
+UPDATE t1 SET b=repeat('a', 800) where a=10;
+CHECK TABLE t1 EXTENDED;
+
+INSERT INTO t1 SET b=repeat('a',400);
+CHECK TABLE t1 EXTENDED;
+
+DELETE FROM t1 WHERE a=2 or a=6;
+UPDATE t1 SET b=repeat('a', 600) where a=11;
+CHECK TABLE t1 EXTENDED;
+drop table t1;
+
+set global myisam_data_pointer_size=default;
+
+# End of 4.1 tests