mirror of
https://github.com/troglobit/finit.git
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Joachim Wiberg
0a269f3298
Finit had no way to answer the question every service manager gets asked: what is running, and change it. D-Bus is how the rest of userspace asks, but linking libdbus, sd-bus or GIO into PID 1 buys a dependency, an allocator and a main loop we do not control. So libink: the wire format, an object tree, and a bus of Finit's own at /run/finit/bus, gated like INIT_SOCKET. It speaks the standard org.freedesktop.DBus, .Peer, .Introspectable interfaces, and Finit's own Manager1, Service1 and Cond1 on top. Methods that change something are marked privileged and answered only for a caller the kernel vouched for, via SO_PEERCRED. Server and client both, since initctl is the first thing that needs to talk to it, and its Start/Stop/Restart/Reload now go over the bus rather than the legacy socket. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
22 lines
770 B
C
22 lines
770 B
C
/* libink — D-Bus object-path encoding for arbitrary identifiers.
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*
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* Copyright (c) 2026 Joachim Wiberg <troglobit@gmail.com>
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* SPDX-License-Identifier: MIT
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*/
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#ifndef LIBINK_PATH_H_
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#define LIBINK_PATH_H_
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#include <stddef.h>
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/* Encode `in` as a D-Bus path segment. Bytes in [A-Za-z0-9] pass
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* through unchanged; everything else (including '_' itself) becomes
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* "_HH" with lowercase hex, mirroring systemd's escape_path.
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*
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* Returns the encoded length (excluding the terminating nul), or -1
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* if the output buffer cannot fit the result. `outsz` must
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* accommodate the encoded bytes plus a trailing nul; the worst-case
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* size for an N-byte input is 3*N + 1. */
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int link_path_encode(const char *in, char *out, size_t outsz);
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#endif /* LIBINK_PATH_H_ */
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