child_process: remove shell option before fork #15299

ghost · 2017-09-09T20:50:35Z

Checklist

[x ] make -j4 test (UNIX), or vcbuild test (Windows) passes
[x ] tests and/or benchmarks are included
[x ] documentation is changed or added

Affected core subsystem(s)

child_process

cjihrig · 2017-09-09T21:00:57Z

This should have a test. #13983 can probably help with that. We should also document the behavior. It might also be better if we can do this without the Windows check.

ghost · 2017-09-09T21:09:41Z

I missed the entire test generation section of the contribution doc. First time at this.

*Edit: I checked in a test. Thanks for the gentle reminder/nudge. In the spirit of this being my first attempt at a contribution it is about as complex as the actual code change but hopefully sufficient. On to documentation.

Test for #15299

ghost · 2017-09-09T22:55:30Z

RE: Not doing the platform check - do you want me to just explicitly set it false and document that shell isn't supported for fork?

cjihrig · 2017-09-10T03:49:03Z

@agresnel I think that based on #13983 (comment), that should be fine. Thanks for taking care of this.

cjihrig

A couple comments. I think you might want to consider something like this for the test:

'use strict';
// Refs: https://github.com/nodejs/node/issues/13983
// This test verifies that the shell option is not supported by fork().
require('../common');
const assert = require('assert');
const cp = require('child_process');

if (process.argv[2] === undefined) {
  cp.fork(__filename, ['$foo'], {
    shell: true,
    env: { foo: 'bar' }
  });
} else {
  assert.strictEqual(process.argv[2], '$foo');
}

I only tried this test on macOS. You probably need to conditionally use %foo% instead of $foo on Windows.

cjihrig · 2017-09-10T17:57:54Z

doc/api/child_process.md

@@ -335,7 +335,7 @@ The `child_process.fork()` method is a special case of
 Like [`child_process.spawn()`][], a [`ChildProcess`][] object is returned. The returned
 [`ChildProcess`][] will have an additional communication channel built-in that
 allows messages to be passed back and forth between the parent and child. See
-[`subprocess.send()`][] for details.
+[`subprocess.send()`][] for details. 


Extra whitespace change here.

cjihrig · 2017-09-10T17:58:55Z

test/parallel/test-child-process-fork-noshell.js

@@ -0,0 +1,29 @@
+// Copyright Joyent, Inc. and other Node contributors.


New files don't need this copyright header. You can remove it.

cjihrig · 2017-09-10T17:59:51Z

test/parallel/test-child-process-fork-noshell.js

+const child_process = require('child_process');
+const fixtures = require('../common/fixtures');
+
+//As per: https://github.com/nodejs/node/issues/13983 should produce no error output


Space after //.

Lines should be wrapped at 80 characters too. make lint should have caught this.

Fishrock123 · 2017-09-11T19:16:54Z

The PR owner's account appears to have been deleted. @cjihrig if you are interested in this you may want to take their commit and make a new PR from it.

cjihrig · 2017-09-11T19:19:04Z

@Fishrock123 thanks for the heads up. Will do.

cjihrig · 2017-09-12T01:10:10Z

Moved to #15352

This commit ensures that spawn()'s shell option is unconditionally set to false when fork() is called. Refs: nodejs#15299 Fixes: nodejs#13983 PR-URL: nodejs#15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

This commit verifies that the child_process fork() method does not honor the shell option. Refs: nodejs#15299 PR-URL: nodejs#15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com>

This commit ensures that spawn()'s shell option is unconditionally set to false when fork() is called. Refs: nodejs/node#15299 Fixes: nodejs/node#13983 PR-URL: nodejs/node#15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

This commit verifies that the child_process fork() method does not honor the shell option. Refs: nodejs/node#15299 PR-URL: nodejs/node#15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com>

This commit verifies that the child_process fork() method does not honor the shell option. Refs: #15299 PR-URL: #15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com>

This commit ensures that spawn()'s shell option is unconditionally set to false when fork() is called. Refs: #15299 Fixes: #13983 PR-URL: #15352 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>