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51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
---
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lang: en
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layout: doc
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permalink: /doc/vm-sudo-implementation/
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redirect_from:
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- /en/doc/vm-sudo-implementation/
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- /doc/VMSudo-implementation/
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ref: 341
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title: Passwordless root access in qubes
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---
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The rationale behind passwordless root in qubes is set out [here](/doc/vm-sudo). Implementation is by the qubes-core-agent-passwordless-root package.
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This page sets out the configuration changes made, with (not necessary complete) list of mechanisms depending on each of them:
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1. sudo (`/etc/sudoers.d/qubes`):
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```
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Defaults !requiretty
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%qubes ALL=(ALL) ROLE=unconfined_r TYPE=unconfined_t NOPASSWD: ALL
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(...)
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```
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- Easy user -> root access (main option for the user).
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- `qvm-usb` (not really working, as of R2).
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2. PolicyKit (`/etc/polkit-1/rules.d/00-qubes-allow-all.rules`):
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```
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//allow any action, detailed reasoning in sudoers.d/qubes
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polkit.addRule(function(action,subject) { if (subject.isInGroup("qubes")) return polkit.Result.YES; });
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```
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PAM (`/etc/pam.d/su.qubes` or `/usr/share/pam-configs/su.qubes`)
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```
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auth sufficient pam_succeed_if.so use_uid user ingroup qubes
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```
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- NetworkManager configuration from normal user (`nm-applet`).
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- Updates installation (`gpk-update-viewer`).
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- User can use pkexec just like sudo Note: above is needed mostly because Qubes user GUI session isn't treated by PolicyKit/logind as "local" session because of the way in which X server and session is started.
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Perhaps we will address this issue in the future, but this is really low priority.
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Patches welcomed anyway.
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3. Empty root password:
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- Used for access to 'root' account from text console (`qvm-console-dispvm`) - the only way to access the VM when GUI isn't working.
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- Can be used for easy 'su -' from user to root.
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