Merge branch 'siri/doc-upgrade/OTP-11717'

* siri/doc-upgrade/OTP-11717:
  Add documentation about upgrade
  Add info about upgrade of core applications

2 files changed, 34 insertions, 5 deletions

diff --git a/lib/sasl/doc/src/appup.xml b/lib/sasl/doc/src/appup.xml
index 85fcbed3ba..95f315d269 100644
--- a/lib/sasl/doc/src/appup.xml
+++ b/lib/sasl/doc/src/appup.xml
@@ -4,7 +4,7 @@
 <fileref>
   <header>
     <copyright>
-      <year>1997</year><year>2013</year>
+      <year>1997</year><year>2014</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -84,6 +84,9 @@
     version identifier must be specified as a binary, e.g.</p>
     <code type="none">&lt;&lt;"2\\.1\\.[0-9]+">></code>
     <p>will match all versions <c>2.1.x</c>, where x is any number.</p>
+    <p>Note that the regular expression must match the complete
+    version string, so the above example will work for for
+    e.g. <c>2.1.1</c>, but not for <c>2.1.1.1</c></p>
   </section>
 
   <section>
@@ -339,7 +342,7 @@ restart_new_emulator
       version of erts, kernel, stdlib and sasl are used when the
       emulator restarts. Only one <c>restart_new_emulator</c>
       instruction is allowed in the relup, and it shall be placed
-      first. <seealso marker="systools#make_relup/3">systools:make_relup3,4</seealso>
+      first. <seealso marker="systools#make_relup/3">systools:make_relup/3,4</seealso>
       will ensure this when the relup is generated. The rest of the
       relup script is executed after the restart as a part of the boot
       script.</p>
@@ -347,11 +350,25 @@ restart_new_emulator
       completed. To programatically find out if the upgrade is
       complete,
       call <seealso marker="release_handler#which_releases/0">
-      release_handler:which_releases</seealso> and check if the
+      release_handler:which_releases/0,1</seealso> and check if the
       expected release has status <c>current</c>.</p>
     <p>The new release must still be made permanent after the upgrade
       is completed. Otherwise, the old emulator is started in case of
       an emulator restart.</p>
+    <warning>
+      <p>As stated above, the <c>restart_new_emulator</c>
+	instruction causes the emulator to be restarted with new
+	versions of <c>erts</c>, <c>kernel</c>, <c>stdlib</c> and
+	<c>sasl</c>. All other applications, however, will at startup
+	be running their old versions in this new emulator. In most
+	cases this is no problem, but every now and then there will be
+	incompatible changes to the core applications which may cause
+	trouble in this setting. Such incompatible changes (when
+	functions are removed) are normally preceded by a deprecation
+	over two major releases. To make sure your application is not
+	crashed by an incompatible change, always remove any call to
+	deprecated functions as soon as possible.</p>
+    </warning>
     <pre>
 restart_emulator
     </pre>
diff --git a/lib/sasl/examples/src/target_system.erl b/lib/sasl/examples/src/target_system.erl
index fb9e9aaaaf..a0ae016791 100644
--- a/lib/sasl/examples/src/target_system.erl
+++ b/lib/sasl/examples/src/target_system.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2011-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2011-2014. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -65,7 +65,7 @@ create(RelFileName,SystoolsOpts) ->
               [RelFileName, RelFileName]),
     make_script(RelFileName,SystoolsOpts),
 
-    TarFileName = filename:join(Dir,RelFileName ++ ".tar.gz"),
+    TarFileName = RelFileName ++ ".tar.gz",
     io:fwrite("Creating tar file ~tp ...~n", [TarFileName]),
     make_tar(RelFileName,SystoolsOpts),
 
@@ -100,6 +100,12 @@ create(RelFileName,SystoolsOpts) ->
     copy_file(filename:join([ErtsBinDir, "to_erl"]), 
               filename:join([TmpBinDir, "to_erl"]), [preserve]),
 
+    %% This is needed if 'start' script created from 'start.src' shall
+    %% be used as it points out this directory as log dir for 'run_erl'
+    TmpLogDir = filename:join([TmpDir, "log"]),
+    io:fwrite("Creating temporary directory ~tp ...~n", [TmpLogDir]),
+    ok = file:make_dir(TmpLogDir),
+
     StartErlDataFile = filename:join([TmpDir, "releases", "start_erl.data"]),
     io:fwrite("Creating ~tp ...~n", [StartErlDataFile]),
     StartErlData = io_lib:fwrite("~s ~s~n", [ErtsVsn, RelVsn]),
@@ -115,6 +121,7 @@ create(RelFileName,SystoolsOpts) ->
     erl_tar:add(Tar, filename:join(TmpDir,ErtsDir), ErtsDir, []),
     erl_tar:add(Tar, filename:join(TmpDir,"releases"), "releases", []),
     erl_tar:add(Tar, filename:join(TmpDir,"lib"), "lib", []),
+    erl_tar:add(Tar, filename:join(TmpDir,"log"), "log", []),
     erl_tar:close(Tar),
     %% file:set_cwd(Cwd),
     io:fwrite("Removing directory ~tp ...~n",[TmpDir]),
@@ -136,6 +143,11 @@ install(RelFileName, RootDir) ->
     subst_src_scripts(["erl", "start", "start_erl"], ErtsBinDir, BinDir, 
                       [{"FINAL_ROOTDIR", RootDir}, {"EMU", "beam"}],
                       [preserve]),
+    %%! Workaround for pre OTP 17.0: start.src and start_erl.src did
+    %%! not have correct permissions, so the above 'preserve' option did not help
+    ok = file:change_mode(filename:join(BinDir,"start"),8#0755),
+    ok = file:change_mode(filename:join(BinDir,"start_erl"),8#0755),
+
     io:fwrite("Creating the RELEASES file ...\n"),
     create_RELEASES(RootDir, filename:join([RootDir, "releases",
 					    filename:basename(RelFileName)])).