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This PR expands the "Bootup and Shutdown" module’s systemd support with creation and management for services, timers, sockets, paths and targets. It also adds user-scoped systemd units, linger controls, status and log actions, tabbed unit listings by type, and contextual help for the new options. For user-scoped units, the implementation includes several safety guards because unit files live under user-controlled home directories: - User accounts are validated with system account data before any user-unit operation is attempted. - User unit names are restricted to known systemd unit suffixes and safe filename characters. - User unit files are limited to direct children of `~/.config/systemd/user`. - Symlinked `.config`, `.config/systemd`, and `.config/systemd/user` paths are rejected. - User unit reads, writes, directory creation, and deletes are performed after dropping privileges to the target Unix user. - File operations re-check paths close to the actual read/write/delete operation to reduce symlink race exposure. - User unit create failures roll back half-created files when daemon reload fails. - User-provided unit names, owners, paths, command output, and logs are HTML-escaped before display. - systemctl, journalctl, and loginctl command arguments are shell-quoted before execution. - User services omit `User=` and `Group=` directives because they already run under the selected user’s systemd manager. Together, all these changes will allow Webmin admin to manage both system and user systemd units while keeping user-controlled home-directory paths from becoming root-level file read/write/delete exploits. Implemented in response to these two issue requests https://github.com/webmin/webmin/issues/2733 and https://github.com/webmin/webmin/issues/2734
9 lines
438 B
HTML
9 lines
438 B
HTML
<header>Environment file</header>
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<p>Path to a file containing environment variables for the service. This writes
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<tt>EnvironmentFile=</tt>. Prefix the path with <tt>-</tt> to ignore a missing
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file.</p>
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<p>Each line in the file should normally be a shell-style assignment such as
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<tt>NAME=value</tt>. Common examples are <tt>/etc/default/myapp</tt>,
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<tt>/etc/sysconfig/myapp</tt>, or a private file under the application's
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directory.</p>
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