Don't allow null chars in various strings

Various places that now reject null chars inside strings
- Primitive file operations reject it in filenames.
- Primitive environment variable operations reject it in
  names and values.
- os:cmd() reject it in its input.

Also '=' characters are rejected by primitive environment
variable operations in environment variable names.

Documentation has been updated to document null characters
in these types of data as invalid. Currently these operations
accept null chars at the end of strings, but that will change
in the future.

3 files changed, 2 insertions, 2 deletions

diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam
index 6fa48e8582..cc7b989e2f 100644
--- a/erts/preloaded/ebin/erlang.beam
+++ b/erts/preloaded/ebin/erlang.beam
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index f796ea64d3..e8616fa260 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2100,7 +2100,7 @@ nodes(_Arg) ->
            | stream
            | {line, L :: non_neg_integer()}
            | {cd, Dir :: string() | binary()}
-           | {env, Env :: [{Name :: string(), Val :: string() | false}]}
+           | {env, Env :: [{Name :: os:env_var_name(), Val :: os:env_var_value() | false}]}
            | {args, [string() | binary()]}
            | {arg0, string() | binary()}
            | exit_status
diff --git a/erts/preloaded/src/erts.app.src b/erts/preloaded/src/erts.app.src
index 7ab06164b4..e2ab8686d2 100644
--- a/erts/preloaded/src/erts.app.src
+++ b/erts/preloaded/src/erts.app.src
@@ -37,7 +37,7 @@
 	{registered, []},
 	{applications, []},
 	{env, []},
-	{runtime_dependencies, ["stdlib-3.0", "kernel-5.0", "sasl-3.0.1"]}
+	{runtime_dependencies, ["stdlib-3.5", "kernel-6.0", "sasl-3.0.1"]}
     ]}.
 
 %% vim: ft=erlang