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process: patch more process properties during pre-execution #26517

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7971185
process: delay process.argv[0] and process.argv0 handling
joyeecheung Mar 8, 2019
2f237d6
process: create legacy process properties during pre-execution
joyeecheung Mar 8, 2019
ae1ac6f
fixup! process: create legacy process properties during pre-execution
joyeecheung Mar 11, 2019
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7 changes: 0 additions & 7 deletions lib/internal/bootstrap/node.js
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Original file line number Diff line number Diff line change
Expand Up @@ -210,13 +210,6 @@ if (!config.noBrowserGlobals) {

setupDOMException();

Object.defineProperty(process, 'argv0', {
enumerable: true,
configurable: false,
value: process.argv[0]
});
process.argv[0] = process.execPath;

// process.allowedNodeEnvironmentFlags
Object.defineProperty(process, 'allowedNodeEnvironmentFlags', {
get() {
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43 changes: 42 additions & 1 deletion lib/internal/bootstrap/pre_execution.js
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Expand Up @@ -6,6 +6,8 @@ const { getOptionValue } = require('internal/options');
let traceEventsAsyncHook;

function prepareMainThreadExecution() {
// Patch the process object with legacy properties and normalizations
patchProcessObject();
setupTraceCategoryState();

setupWarningHandler();
Expand Down Expand Up @@ -48,11 +50,49 @@ function prepareMainThreadExecution() {
loadPreloadModules();
}

function patchProcessObject() {
Object.defineProperty(process, 'argv0', {
enumerable: true,
configurable: false,
value: process.argv[0]
});
process.argv[0] = process.execPath;

// TODO(joyeecheung): most of these should be deprecated and removed,
// execpt some that we need to be able to mutate during run time.
defineReadOnlyAlias('_eval', '--eval');
defineReadOnlyAlias('_print_eval', '--print');
defineReadOnlyAlias('_syntax_check_only', '--check');
defineReadOnlyAlias('_forceRepl', '--interactive');
defineReadOnlyAlias('_preload_modules', '--require');
defineReadOnlyAlias('noDeprecation', '--no-deprecation');
defineReadOnlyAlias('noProcessWarnings', '--no-warnings');
defineReadOnlyAlias('traceProcessWarnings', '--trace-warnings');
defineReadOnlyAlias('throwDeprecation', '--throw-deprecation');
defineReadOnlyAlias('profProcess', '--prof-process');
defineReadOnlyAlias('traceDeprecation', '--trace-deprecation');
defineReadOnlyAlias('_breakFirstLine', '--inspect-brk', false);
defineReadOnlyAlias('_breakNodeFirstLine', '--inspect-brk-node', false);
}

function defineReadOnlyAlias(name, option, enumerable = true) {
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const value = getOptionValue(option);
if (value) {
Object.defineProperty(process, name, {
writable: false,
configurable: true,
enumerable,
value
});
}
}

function setupWarningHandler() {
const {
onWarning
} = require('internal/process/warning');
if (!process.noProcessWarnings && process.env.NODE_NO_WARNINGS !== '1') {
if (!getOptionValue('--no-warnings') &&
process.env.NODE_NO_WARNINGS !== '1') {
process.on('warning', onWarning);
}
}
Expand Down Expand Up @@ -290,6 +330,7 @@ function loadPreloadModules() {
}

module.exports = {
patchProcessObject,
setupCoverageHooks,
setupWarningHandler,
setupDebugEnv,
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2 changes: 2 additions & 0 deletions lib/internal/main/worker_thread.js
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Expand Up @@ -4,6 +4,7 @@
// message port.

const {
patchProcessObject,
setupCoverageHooks,
setupWarningHandler,
setupDebugEnv,
Expand Down Expand Up @@ -41,6 +42,7 @@ const {

const publicWorker = require('worker_threads');

patchProcessObject();
setupDebugEnv();

const debug = require('util').debuglog('worker');
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89 changes: 4 additions & 85 deletions src/node_process_object.cc
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Expand Up @@ -170,91 +170,10 @@ MaybeLocal<Object> CreateProcessObject(
FIXED_ONE_BYTE_STRING(env->isolate(), "ppid"),
GetParentProcessId).FromJust());

// TODO(joyeecheung): the following process properties that are set using
// parsed CLI flags should be migrated to `internal/options` in JS land.

// -e, --eval
// TODO(addaleax): Remove this.
if (env->options()->has_eval_string) {
READONLY_PROPERTY(process,
"_eval",
String::NewFromUtf8(
env->isolate(),
env->options()->eval_string.c_str(),
NewStringType::kNormal).ToLocalChecked());
}

// -p, --print
// TODO(addaleax): Remove this.
if (env->options()->print_eval) {
READONLY_PROPERTY(process, "_print_eval", True(env->isolate()));
}

// -c, --check
// TODO(addaleax): Remove this.
if (env->options()->syntax_check_only) {
READONLY_PROPERTY(process, "_syntax_check_only", True(env->isolate()));
}

// -i, --interactive
// TODO(addaleax): Remove this.
if (env->options()->force_repl) {
READONLY_PROPERTY(process, "_forceRepl", True(env->isolate()));
}

// -r, --require
// TODO(addaleax): Remove this.
const std::vector<std::string>& preload_modules =
env->options()->preload_modules;
if (!preload_modules.empty()) {
READONLY_PROPERTY(process,
"_preload_modules",
ToV8Value(env->context(), preload_modules)
.ToLocalChecked());
}

// --no-deprecation
if (env->options()->no_deprecation) {
READONLY_PROPERTY(process, "noDeprecation", True(env->isolate()));
}

// --no-warnings
if (env->options()->no_warnings) {
READONLY_PROPERTY(process, "noProcessWarnings", True(env->isolate()));
}

// --trace-warnings
if (env->options()->trace_warnings) {
READONLY_PROPERTY(process, "traceProcessWarnings", True(env->isolate()));
}

// --throw-deprecation
if (env->options()->throw_deprecation) {
READONLY_PROPERTY(process, "throwDeprecation", True(env->isolate()));
}

// --prof-process
// TODO(addaleax): Remove this.
if (env->options()->prof_process) {
READONLY_PROPERTY(process, "profProcess", True(env->isolate()));
}

// --trace-deprecation
if (env->options()->trace_deprecation) {
READONLY_PROPERTY(process, "traceDeprecation", True(env->isolate()));
}

// --inspect-brk
if (env->options()->debug_options().wait_for_connect()) {
READONLY_DONT_ENUM_PROPERTY(process,
"_breakFirstLine", True(env->isolate()));
}

// --inspect-brk-node
if (env->options()->debug_options().break_node_first_line) {
READONLY_DONT_ENUM_PROPERTY(process,
"_breakNodeFirstLine", True(env->isolate()));
}
// TODO(joyeecheung): make this available in JS during pre-execution.
// Note that to use this in releases the code doing the revert need to be
// careful to delay the check until after the bootstrap but that may not
// be possible depending on the feature being reverted.
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// --security-revert flags
#define V(code, _, __) \
Expand Down