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-rw-r--r--lib/kernel/src/os.erl125
1 files changed, 82 insertions, 43 deletions
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl
index a4b4f798f9..29a26674ba 100644
--- a/lib/kernel/src/os.erl
+++ b/lib/kernel/src/os.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1997-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -25,41 +25,36 @@
-include("file.hrl").
+-export_type([env_var_name/0, env_var_value/0, env_var_name_value/0]).
+
+-export([getenv/0, getenv/1, getenv/2, putenv/2, unsetenv/1]).
+
%%% BIFs
--export([getenv/0, getenv/1, getenv/2, getpid/0,
- perf_counter/0, perf_counter/1,
- putenv/2, set_signal/2, system_time/0, system_time/1,
- timestamp/0, unsetenv/1]).
+-export([get_env_var/1, getpid/0, list_env_vars/0, perf_counter/0,
+ perf_counter/1, set_env_var/2, set_signal/2, system_time/0,
+ system_time/1, timestamp/0, unset_env_var/1]).
-type os_command() :: atom() | io_lib:chars().
-type os_command_opts() :: #{ max_size => non_neg_integer() | infinity }.
-export_type([os_command/0, os_command_opts/0]).
--spec getenv() -> [string()].
+-type env_var_name() :: nonempty_string().
-getenv() -> erlang:nif_error(undef).
+-type env_var_value() :: string().
--spec getenv(VarName) -> Value | false when
- VarName :: string(),
- Value :: string().
+-type env_var_name_value() :: nonempty_string().
-getenv(_) ->
+-spec list_env_vars() -> [{env_var_name(), env_var_value()}].
+list_env_vars() ->
erlang:nif_error(undef).
--spec getenv(VarName, DefaultValue) -> Value when
- VarName :: string(),
- DefaultValue :: string(),
- Value :: string().
-
-getenv(VarName, DefaultValue) ->
- case os:getenv(VarName) of
- false ->
- DefaultValue;
- Value ->
- Value
- end.
+-spec get_env_var(VarName) -> Value | false when
+ VarName :: env_var_name(),
+ Value :: env_var_value().
+get_env_var(_VarName) ->
+ erlang:nif_error(undef).
-spec getpid() -> Value when
Value :: string().
@@ -79,11 +74,10 @@ perf_counter() ->
perf_counter(Unit) ->
erlang:convert_time_unit(os:perf_counter(), perf_counter, Unit).
--spec putenv(VarName, Value) -> true when
- VarName :: string(),
- Value :: string().
-
-putenv(_, _) ->
+-spec set_env_var(VarName, Value) -> true when
+ VarName :: env_var_name(),
+ Value :: env_var_value().
+set_env_var(_, _) ->
erlang:nif_error(undef).
-spec system_time() -> integer().
@@ -103,10 +97,9 @@ system_time(_Unit) ->
timestamp() ->
erlang:nif_error(undef).
--spec unsetenv(VarName) -> true when
- VarName :: string().
-
-unsetenv(_) ->
+-spec unset_env_var(VarName) -> true when
+ VarName :: env_var_name().
+unset_env_var(_) ->
erlang:nif_error(undef).
-spec set_signal(Signal, Option) -> 'ok' when
@@ -120,6 +113,39 @@ set_signal(_Signal, _Option) ->
%%% End of BIFs
+-spec getenv() -> [env_var_name_value()].
+getenv() ->
+ [lists:flatten([Key, $=, Value]) || {Key, Value} <- os:list_env_vars() ].
+
+-spec getenv(VarName) -> Value | false when
+ VarName :: env_var_name(),
+ Value :: env_var_value().
+getenv(VarName) ->
+ os:get_env_var(VarName).
+
+-spec getenv(VarName, DefaultValue) -> Value when
+ VarName :: env_var_name(),
+ DefaultValue :: env_var_value(),
+ Value :: env_var_value().
+getenv(VarName, DefaultValue) ->
+ case os:getenv(VarName) of
+ false ->
+ DefaultValue;
+ Value ->
+ Value
+ end.
+
+-spec putenv(VarName, Value) -> true when
+ VarName :: env_var_name(),
+ Value :: env_var_value().
+putenv(VarName, Value) ->
+ os:set_env_var(VarName, Value).
+
+-spec unsetenv(VarName) -> true when
+ VarName :: env_var_name().
+unsetenv(VarName) ->
+ os:unset_env_var(VarName).
+
-spec type() -> {Osfamily, Osname} when
Osfamily :: unix | win32,
Osname :: atom().
@@ -183,7 +209,7 @@ verify_executable(Name0, [Ext|Rest], OrigExtensions) ->
end;
verify_executable(Name, [], OrigExtensions) when OrigExtensions =/= [""] -> %% Windows
%% Will only happen on windows, hence case insensitivity
- case can_be_full_name(string:to_lower(Name),OrigExtensions) of
+ case can_be_full_name(string:lowercase(Name),OrigExtensions) of
true ->
verify_executable(Name,[""],[""]);
_ ->
@@ -245,8 +271,7 @@ cmd(Cmd) ->
Command :: os_command(),
Options :: os_command_opts().
cmd(Cmd, Opts) ->
- validate(Cmd),
- {SpawnCmd, SpawnOpts, SpawnInput, Eot} = mk_cmd(os:type(), Cmd),
+ {SpawnCmd, SpawnOpts, SpawnInput, Eot} = mk_cmd(os:type(), validate(Cmd)),
Port = open_port({spawn, SpawnCmd}, [binary, stderr_to_stdout,
stream, in, hide | SpawnOpts]),
MonRef = erlang:monitor(port, Port),
@@ -266,8 +291,6 @@ mk_cmd({win32,Wtype}, Cmd) ->
{Cspec,_} -> lists:concat([Cspec," /c",Cmd])
end,
{Command, [], [], <<>>};
-mk_cmd(OsType,Cmd) when is_atom(Cmd) ->
- mk_cmd(OsType, atom_to_list(Cmd));
mk_cmd(_,Cmd) ->
%% Have to send command in like this in order to make sh commands like
%% cd and ulimit available
@@ -290,17 +313,33 @@ mk_cmd(_,Cmd) ->
<<$\^D>>}.
validate(Atom) when is_atom(Atom) ->
- ok;
+ validate(atom_to_list(Atom));
validate(List) when is_list(List) ->
- validate1(List).
+ case validate1(List) of
+ false ->
+ List;
+ true ->
+ %% Had zeros at end; remove them...
+ string:trim(List, trailing, [0])
+ end.
-validate1([C|Rest]) when is_integer(C) ->
+validate1([0|Rest]) ->
+ validate2(Rest);
+validate1([C|Rest]) when is_integer(C), C > 0 ->
validate1(Rest);
validate1([List|Rest]) when is_list(List) ->
- validate1(List),
- validate1(Rest);
+ validate1(List) or validate1(Rest);
validate1([]) ->
- ok.
+ false.
+
+%% Ensure that the rest is zero only...
+validate2([]) ->
+ true;
+validate2([0|Rest]) ->
+ validate2(Rest);
+validate2([List|Rest]) when is_list(List) ->
+ validate2(List),
+ validate2(Rest).
get_data(Port, MonRef, Eot, Sofar, Size, Max) ->
receive
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 13:56:58 +0000