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tasks/filesystems: Make sure file mode of /dev/pts/ptmx is 0666 #28490

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merged 1 commit into from
Aug 29, 2017

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rdjy
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@rdjy rdjy commented Aug 23, 2017

This is required for running commands likes screen and tmux, especially inside containers.

See also : https://www.kernel.org/doc/Documentation/filesystems/devpts.txt

Motivation for this change

Currently, when creating a container, the pts filesystem is mounted without the right permission. As a result, tmux fails to create a new session. According to the kernel doc, it should be mounted with mode 0666.

Things done
  • Tested using sandboxing
    (nix.useSandbox on NixOS,
    or option build-use-sandbox in nix.conf
    on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • Linux
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Fits CONTRIBUTING.md.

This is required for running commands likes screen and tmux, especially inside containers.

See also : https://www.kernel.org/doc/Documentation/filesystems/devpts.txt
@fpletz
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fpletz commented Aug 29, 2017

Awesome! I was wondering why terminal multiplexers weren't working in containers for users != root. Thanks!:beers:

@fpletz fpletz merged commit 64994b3 into NixOS:master Aug 29, 2017
@fpletz fpletz added this to the 17.09 milestone Aug 29, 2017
@fpletz fpletz changed the title Make sure file mode of /dev/pts/ptmx is 0666 tasks/filesystems: Make sure file mode of /dev/pts/ptmx is 0666 Aug 29, 2017
@rdjy rdjy deleted the ptmx branch September 13, 2017 00:13
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4 participants