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expressvpn: fix daemon not able to modify resolv.conf #379943

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merged 3 commits into from
Mar 18, 2025

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@e2r2fx e2r2fx commented Feb 6, 2025

Things done

The expressvpnd binary is unable to modify the host's DNS configuration from FHS sandbox.
These changes mount the host's resolv.conf into the container to fix the issue.
Relevant issue: #210439

  • Built on platform(s)
    • x86_64-linux
    • aarch64-linux
    • x86_64-darwin
    • aarch64-darwin
  • For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
    • sandbox = relaxed
    • sandbox = true
  • Tested, as applicable:
  • Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
  • Tested basic functionality of all binary files (usually in ./result/bin/)
  • 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
    • (Package updates) Added a release notes entry if the change is major or breaking
    • (Module updates) Added a release notes entry if the change is significant
    • (Module addition) Added a release notes entry if adding a new NixOS module
  • Fits CONTRIBUTING.md.

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@github-actions github-actions bot added 10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1 10.rebuild-linux: 1-10 labels Feb 6, 2025
@nix-owners nix-owners bot requested a review from Yureien February 6, 2025 22:59
@NixOSInfra NixOSInfra added the 12. first-time contribution This PR is the author's first one; please be gentle! label Feb 6, 2025
@FliegendeWurst FliegendeWurst changed the title fix(expressvpn): daemon not able to modify resolv.conf expressvpn: fix daemon not able to modify resolv.conf Mar 11, 2025
@FliegendeWurst FliegendeWurst merged commit a3383f5 into NixOS:master Mar 18, 2025
3 of 6 checks passed
naminx added a commit to naminx/nixpkgs that referenced this pull request Mar 25, 2025
My original method exposes the whole /etc directory to FHS environment. This is risky considering the service is run as root. In pull request NixOS#379943, the author uses mount --bind to expose only etc/resolv.conf to the FHS. This is obviously a better practice.
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10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1-10 10.rebuild-linux: 1 12. first-time contribution This PR is the author's first one; please be gentle!
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3 participants