28 lines
1.2 KiB
Plaintext
28 lines
1.2 KiB
Plaintext
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// -*- mode:doc; -*-
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// vim: set syntax=asciidoc:
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[[integration-systemd]]
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=== Systemd
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This chapter describes the decisions taken in Buildroot's integration of
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systemd, and how various use cases can be implemented.
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==== DBus daemon
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Systemd requires a DBus daemon. There are two options for it: traditional dbus
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(+BR2_PACKAGE_DBUS+) and bus1 dbus-broker (+BR2_PACKAGE_DBUS_BROKER+). At
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least one of them must be chosen. If both are included in the configuration,
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dbus-broker will be used as system bus, but the traditional dbus-daemon is
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still installed as well and can be used as session bus. Also its tools (e.g.
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+dbus-send+) can be used (systemd itself has +busctl+ as an alternative). In
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addition, the traditional dbus package is the only one that provides +libdbus+,
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which is used by many packages as dbus integration library.
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Both in the dbus and in the dbus-broker case, the daemon runs as user +dbus+.
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The DBus configuration files are also identical for both.
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To make sure that only one of the two daemons is started as system bus, the
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systemd activation files of the dbus package (+dbus.socket+ and the
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+dbus.service+ symlink in +multi-user.target.wants+) are removed when
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dbus-broker is selected.
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