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43 lines
1.4 KiB
43 lines
1.4 KiB
4 months ago
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adb can be configured to work with systemd-style socket activation,
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allowing the daemon to start automatically when the adb control port
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is forwarded across a network. You need two files, placed in the usual
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systemd service directories (e.g., ~/.config/systemd/user for a user
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service).
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adb.service:
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--- START adb.service CUT HERE ---
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[Unit]
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Description=adb
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After=adb.socket
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Requires=adb.socket
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[Service]
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Type=simple
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# FD 3 is part of the systemd interface
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ExecStart=/path/to/adb server nodaemon -L acceptfd:3
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--- END adb.service CUT HERE ---
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--- START adb.socket CUT HERE ---
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[Unit]
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Description=adb
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PartOf=adb.service
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[Socket]
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ListenStream=127.0.0.1:5037
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Accept=no
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[Install]
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WantedBy=sockets.target
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--- END adb.socket CUT HERE ---
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After installing the adb service, the adb server will be started
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automatically on any connection to 127.0.0.1:5037 (the default adb
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control port), even after adb kill-server kills the server.
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Other "superserver" launcher systems (like macOS launchd) can be
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configured analogously. The important part is that adb be started with
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"server" and "nodaemon" command line arguments and that the listen
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address (passed to -L) name a file descriptor that's ready to
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accept(2) connections and that's already bound to the desired address
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and listening. inetd-style pre-accepted sockets do _not_ work in this
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configuration: the file descriptor passed to acceptfd must be the
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serve socket, not the accepted connection socket.
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