Merge branch 'sv/file-osync/OTP-11498'

* sv/file-osync/OTP-11498:
  Add sync option to file:open/2

Conflicts:
	erts/preloaded/ebin/prim_file.beam

2 files changed, 5 insertions, 1 deletions

diff --git a/erts/preloaded/ebin/prim_file.beam b/erts/preloaded/ebin/prim_file.beam
index a1028c5480..de88b33fea 100644
--- a/erts/preloaded/ebin/prim_file.beam
+++ b/erts/preloaded/ebin/prim_file.beam
diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl
index 489e8ca4ea..5999e98340 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -123,9 +123,11 @@
 -define(EFILE_MODE_APPEND,     4).
 -define(EFILE_COMPRESSED,      8).
 -define(EFILE_MODE_EXCL,       16).
+%% Note: bit 5 (32) is used internally for VxWorks
+-define(EFILE_MODE_SYNC,       64).
 
 %% Use this mask to get just the mode bits to be passed to the driver.
--define(EFILE_MODE_MASK, 31).
+-define(EFILE_MODE_MASK, 127).
 
 %% Seek modes for the driver's seek function.
 -define(EFILE_SEEK_SET, 0).
@@ -1197,6 +1199,8 @@ open_mode([append|Rest], Mode, Portopts, Setopts) ->
 	      Portopts, Setopts);
 open_mode([exclusive|Rest], Mode, Portopts, Setopts) ->
     open_mode(Rest, Mode bor ?EFILE_MODE_EXCL, Portopts, Setopts);
+open_mode([sync|Rest], Mode, Portopts, Setopts) ->
+    open_mode(Rest, Mode bor ?EFILE_MODE_SYNC, Portopts, Setopts);
 open_mode([delayed_write|Rest], Mode, Portopts, Setopts) ->
     open_mode([{delayed_write, 64*1024, 2000}|Rest], Mode,
 	      Portopts, Setopts);