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https://github.com/troglobit/finit.git
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Joachim Wiberg
6e60b8183a
udevdb_read_parent() contained the general capability, keyed from sysfs when no uevent is in hand. Split it out as udevdb_read_devpath() for the D-Bus Info method; parent lookup becomes a wrapper. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* udev-compatible per-device database in /run/udev/data/
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*
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* Copyright (c) 2025 Joachim Wiberg <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef KEVENTD_UDEVDB_H_
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#define KEVENTD_UDEVDB_H_
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#include "keventd.h"
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/*
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* Database root directory, compatible with systemd/eudev's /run/udev/data/.
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* One text file per device, keyed by device ID (see udevdb_path()).
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*
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* Record format (one per line):
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* I:<usec> initialisation timestamp
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* E:<KEY>=<VAL> environment / property
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* S:<path> symlink (relative to /dev/)
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* G:<tag> tag (for G: records)
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* Q:<tag> tag (for Q: query records, mirrors G:)
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* V:1 format version sentinel, always last
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*/
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#define UDEVDB_PATH "/run/udev/data"
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/*
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* Write a device's properties to the database after event processing.
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* Creates /run/udev/data/<id> with I:, E:, S:, G:, Q:, V: records.
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*/
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int udevdb_write (const struct uevent *ev);
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/*
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* Read a device's properties from the database into ev's env store.
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* Used by IMPORT{db} and IMPORT{parent} in the rules engine (Phase 4).
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*/
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int udevdb_read (struct uevent *ev);
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/*
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* Like udevdb_read(), but for the parent device of ev.
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*/
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int udevdb_read_parent (struct uevent *ev);
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/*
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* Like udevdb_read(), for any devpath, keyed from sysfs.
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*/
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int udevdb_read_devpath(const char *devpath, struct uevent *ev);
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/*
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* Delete a device's database entry on ACT_REMOVE.
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*/
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void udevdb_delete (const struct uevent *ev);
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#endif /* KEVENTD_UDEVDB_H_ */
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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