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policy: ensure workers do not read fs for policy #25710

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policy: ensure workers do not read fs for policy #25710

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bmeck
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@bmeck bmeck commented Jan 25, 2019

This prevents a main thread from rewriting the policy file and loading
a worker that has a different policy from the main thread.

This prevents a main file of:

// find the file
const policyPath = findPath(process.execArgv);

// rewrite with out new escalated privileges
fs.writeFileSync(policyPath, modifiedPolicy);

// spawn worker to get the modified policy
new Worker(...);
Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines

@bmeck
policy: ensure workers do not read fs for policy
101df42 
This prevents a main thread from rewriting the policy file and loading
a worker that has a different policy from the main thread.
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@bmeck build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/2390/pipeline

@nodejs-github-bot nodejs-github-bot added process Issues and PRs related to the process subsystem. worker Issues and PRs related to Worker support. labels Jan 25, 2019
@bmeck bmeck requested review from addaleax and joyeecheung January 25, 2019 18:30
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CI: https://ci.nodejs.org/job/node-test-pull-request/20372/

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Resume CI: https://ci.nodejs.org/job/node-test-pull-request/20390/

@addaleax addaleax added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Jan 28, 2019
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danbev commented Jan 29, 2019

Landed in 7898238.

@danbev danbev closed this Jan 29, 2019
targos pushed a commit that referenced this pull request Jan 29, 2019
@bmeck @targos
policy: ensure workers do not read fs for policy
f3179f7 
This prevents a main thread from rewriting the policy file and loading
a worker that has a different policy from the main thread.

PR-URL: #25710
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
@targos targos mentioned this pull request Jan 29, 2019
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@joyeecheung joyeecheung joyeecheung approved these changes

@addaleax addaleax addaleax approved these changes

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author ready PRs that have at least one approval, no pending requests for changes, and a CI started. process Issues and PRs related to the process subsystem. worker Issues and PRs related to Worker support.
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