Merge branch 'fdm/file-allocate/OTP-10680'

* fdm/file-allocate/OTP-10680:
  Update preloaded prim_file.beam
  erts: Fix xcomp configure for fallocate
  Add file:allocate/3 operation

2 files changed, 7 insertions, 1 deletions

diff --git a/erts/preloaded/ebin/prim_file.beam b/erts/preloaded/ebin/prim_file.beam
index ff44d38fa9..b8f71b0c1e 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 eafab1bae4..c412b7faf2 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -27,7 +27,7 @@
 %% Generic file contents operations
 -export([open/2, close/1, datasync/1, sync/1, advise/4, position/2, truncate/1,
 	 write/2, pwrite/2, pwrite/3, read/2, read_line/1, pread/2, pread/3,
-	 copy/3, sendfile/10]).
+	 copy/3, sendfile/10, allocate/3]).
 
 %% Specialized file operations
 -export([open/1, open/3]).
@@ -100,6 +100,7 @@
 -define(FILE_FDATASYNC,        30).
 -define(FILE_ADVISE,           31).
 -define(FILE_SENDFILE,         32).
+-define(FILE_ALLOCATE,         33).
 
 %% Driver responses
 -define(FILE_RESP_OK,          0).
@@ -293,6 +294,11 @@ advise(#file_descriptor{module = ?MODULE, data = {Port, _}},
     end.
 
 %% Returns {error, Reason} | ok.
+allocate(#file_descriptor{module = ?MODULE, data = {Port, _}}, Offset, Length) ->
+    Cmd = <<?FILE_ALLOCATE, Offset:64/signed, Length:64/signed>>,
+    drv_command(Port, Cmd).
+
+%% Returns {error, Reason} | ok.
 write(#file_descriptor{module = ?MODULE, data = {Port, _}}, Bytes) ->
     case drv_command_nt(Port, [?FILE_WRITE,erlang:dt_prepend_vm_tag_data(Bytes)],undefined) of
 	{ok, _Size} ->