diff options
Diffstat (limited to 'lib/kernel/src/ram_file.erl')
| -rw-r--r-- | lib/kernel/src/ram_file.erl | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/lib/kernel/src/ram_file.erl b/lib/kernel/src/ram_file.erl index 48ea871433..e427d130b7 100644 --- a/lib/kernel/src/ram_file.erl +++ b/lib/kernel/src/ram_file.erl @@ -1,18 +1,19 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2010. All Rights Reserved. +%% Copyright Ericsson AB 1997-2016. 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 -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at %% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. %% %% %CopyrightEnd% %% @@ -29,6 +30,7 @@ %% Specialized file operations -export([get_size/1, get_file/1, set_file/2, get_file_close/1]). -export([compress/1, uncompress/1, uuencode/1, uudecode/1, advise/4]). +-export([allocate/3]). -export([open_mode/1]). %% used by ftp-file @@ -72,6 +74,7 @@ -define(RAM_FILE_UUDECODE, 36). -define(RAM_FILE_SIZE, 37). -define(RAM_FILE_ADVISE, 38). +-define(RAM_FILE_ALLOCATE, 39). %% Open modes for RAM_FILE_OPEN -define(RAM_FILE_MODE_READ, 1). @@ -383,6 +386,11 @@ advise(#file_descriptor{module = ?MODULE, data = Port}, Offset, advise(#file_descriptor{}, _Offset, _Length, _Advise) -> {error, enotsup}. +allocate(#file_descriptor{module = ?MODULE, data = Port}, Offset, Length) -> + call_port(Port, <<?RAM_FILE_ALLOCATE, Offset:64/signed, Length:64/signed>>); +allocate(#file_descriptor{}, _Offset, _Length) -> + {error, enotsup}. + %%%----------------------------------------------------------------- |