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-rw-r--r--lib/kernel/src/os.erl23
-rw-r--r--lib/kernel/test/os_SUITE.erl45
2 files changed, 43 insertions, 25 deletions
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl
index 742c000cc1..ded03361ee 100644
--- a/lib/kernel/src/os.erl
+++ b/lib/kernel/src/os.erl
@@ -126,7 +126,7 @@ 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:to_lower(Name),OrigExtensions) of
true ->
verify_executable(Name,[""],[""]);
_ ->
@@ -150,7 +150,7 @@ split_path(Path) ->
{win32, _} ->
{ok,Curr} = file:get_cwd(),
split_path(Path, $;, [], [Curr]);
- _ ->
+ _ ->
split_path(Path, $:, [], [])
end.
@@ -187,11 +187,14 @@ cmd(Cmd) ->
{unix, _} ->
unix_cmd(Cmd);
{win32, Wtype} ->
- Command = case {os:getenv("COMSPEC"),Wtype} of
+ Command0 = case {os:getenv("COMSPEC"),Wtype} of
{false,windows} -> lists:concat(["command.com /c", Cmd]);
{false,_} -> lists:concat(["cmd /c", Cmd]);
{Cspec,_} -> lists:concat([Cspec," /c",Cmd])
end,
+ %% open_port/2 awaits string() in Command, but io_lib:chars() can be
+ %% deep lists according to io_lib module description.
+ Command = lists:flatten(Command0),
Port = open_port({spawn, Command}, [stream, in, eof, hide]),
get_data(Port, [])
end.
@@ -213,7 +216,7 @@ unix_cmd(Cmd) ->
end.
%% The -s flag implies that only the positional parameters are set,
-%% and the commands are read from standard input. We set the
+%% and the commands are read from standard input. We set the
%% $1 parameter for easy identification of the resident shell.
%%
-define(SHELL, "/bin/sh -s unix:cmd 2>&1").
@@ -226,7 +229,7 @@ unix_cmd(Cmd) ->
-spec start_port() -> port().
start_port() ->
Ref = make_ref(),
- Request = {Ref,self()},
+ Request = {Ref,self()},
{Pid, Mon} = case whereis(?PORT_CREATOR_NAME) of
undefined ->
spawn_monitor(fun() ->
@@ -273,7 +276,7 @@ start_port_srv_handle({Ref,Client}) ->
Port
catch
error:Reason ->
- {Reason,erlang:get_stacktrace()}
+ {Reason,erlang:get_stacktrace()}
end,
Client ! {Ref,Reply}.
@@ -355,16 +358,16 @@ get_data(Port, Sofar) ->
{Port, {data, Bytes}} ->
get_data(Port, [Sofar|Bytes]);
{Port, eof} ->
- Port ! {self(), close},
+ Port ! {self(), close},
receive
{Port, closed} ->
true
- end,
+ end,
receive
- {'EXIT', Port, _} ->
+ {'EXIT', Port, _} ->
ok
after 1 -> % force context switch
ok
- end,
+ end,
lists:flatten(Sofar)
end.
diff --git a/lib/kernel/test/os_SUITE.erl b/lib/kernel/test/os_SUITE.erl
index 382fd6f6a9..73ed704ae3 100644
--- a/lib/kernel/test/os_SUITE.erl
+++ b/lib/kernel/test/os_SUITE.erl
@@ -18,20 +18,21 @@
%%
-module(os_SUITE).
--export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
+-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2]).
-export([space_in_cwd/1, quoting/1, space_in_name/1, bad_command/1,
- find_executable/1, unix_comment_in_command/1, evil/1]).
+ find_executable/1, unix_comment_in_command/1, deep_list_command/1, evil/1]).
-include_lib("test_server/include/test_server.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
-all() ->
+all() ->
[space_in_cwd, quoting, space_in_name, bad_command,
- find_executable, unix_comment_in_command, evil].
+ find_executable, unix_comment_in_command, deep_list_command,
+ evil].
-groups() ->
+groups() ->
[].
init_per_suite(Config) ->
@@ -117,9 +118,9 @@ space_in_name(Config) when is_list(Config) ->
?line ok = file:change_mode(Echo, 8#777), % Make it executable on Unix.
%% Run the echo program.
- %% Quoting on windows depends on if the full path of the executable
+ %% Quoting on windows depends on if the full path of the executable
%% contains special characters. Paths when running common_tests always
- %% include @, why Windows would always fail if we do not double the
+ %% include @, why Windows would always fail if we do not double the
%% quotes (this is the behaviour of cmd.exe, not Erlang's idea).
Quote = case os:type() of
{win32,_} ->
@@ -135,7 +136,7 @@ space_in_name(Config) when is_list(Config) ->
?t:sleep(5),
?line [] = receive_all(),
ok.
-
+
bad_command(doc) ->
"Check that a bad command doesn't crasch the server or the emulator (it used to).";
bad_command(suite) -> [];
@@ -153,17 +154,17 @@ find_executable(suite) -> [];
find_executable(doc) -> [];
find_executable(Config) when is_list(Config) ->
case os:type() of
- {win32, _} ->
+ {win32, _} ->
?line DataDir = filename:join(?config(data_dir, Config), "win32"),
?line ok = file:set_cwd(filename:join([DataDir, "current"])),
?line Bin = filename:join(DataDir, "bin"),
?line Abin = filename:join(DataDir, "abin"),
?line UsrBin = filename:join([DataDir, "usr", "bin"]),
?line {ok, Current} = file:get_cwd(),
-
+
?line Path = lists:concat([Bin, ";", Abin, ";", UsrBin]),
?line io:format("Path = ~s", [Path]),
-
+
%% Search for programs in Bin (second element in PATH).
?line find_exe(Abin, "my_ar", ".exe", Path),
?line find_exe(Abin, "my_ascii", ".com", Path),
@@ -175,18 +176,18 @@ find_executable(Config) when is_list(Config) ->
?line find_exe(Abin, "my_ar.EXE", "", Path),
?line find_exe(Abin, "my_ascii.COM", "", Path),
?line find_exe(Abin, "MY_ADB.BAT", "", Path),
-
+
%% Search for programs in Abin (second element in PATH).
?line find_exe(Abin, "my_ar", ".exe", Path),
?line find_exe(Abin, "my_ascii", ".com", Path),
?line find_exe(Abin, "my_adb", ".bat", Path),
-
+
%% Search for programs in the current working directory.
?line find_exe(Current, "my_program", ".exe", Path),
?line find_exe(Current, "my_command", ".com", Path),
?line find_exe(Current, "my_batch", ".bat", Path),
ok;
- {unix, _} ->
+ {unix, _} ->
DataDir = ?config(data_dir, Config),
%% Smoke test.
@@ -237,6 +238,21 @@ unix_comment_in_command(Config) when is_list(Config) ->
?line test_server:timetrap_cancel(Dog),
ok.
+deep_list_command(doc) ->
+ "Check that a deep list in command works equally on unix and on windows.";
+deep_list_command(suite) -> [];
+deep_list_command(Config) when is_list(Config) ->
+ %% As a 'io_lib' module description says: "There is no guarantee that the
+ %% character lists returned from some of the functions are flat, they can
+ %% be deep lists."
+ %% That's why os:cmd/1 can have arguments that are deep lists.
+ %% It is not a problem for unix, but for windows it is (in R15B02 for ex.).
+ Echo = os:cmd([$e, $c, "ho"]),
+ true = erlang:is_list(Echo),
+ %% FYI: [$e, $c, "ho"] =:= io_lib:format("ec~s", ["ho"])
+ ok.
+
+
-define(EVIL_PROCS, 100).
-define(EVIL_LOOPS, 100).
-define(PORT_CREATOR, os_cmd_port_creator).
@@ -303,4 +319,3 @@ receive_all() ->
X -> [X|receive_all()]
after 0 -> []
end.
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 08:26:22 +0000