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core: complain if Before= dep on .device is declared

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[Unit]
Before=foobar.device

[Service]
ExecStart=/bin/true
Type=oneshot

$ systemd-analyze verify before-device.service
before-device.service: Dependency Before=foobar.device ignored (.device units cannot be delayed)
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-09-25 08:34:30 -04:00 committed by Martin Pitt
parent 93a0884126
commit dd5e7000cb
2 changed files with 5 additions and 2 deletions
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2
TODO
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@ -139,8 +139,6 @@ Features:
* PID 1 should send out sd_notify("WATCHDOG=1") messages (for usage in the --user mode, and when run via nspawn)
* consider throwing a warning if a service declares it wants to be "Before=" a .device unit.
* there's probably something wrong with having user mounts below /sys,
as we have for debugfs. for exmaple, src/core/mount.c handles mounts
prefixed with /sys generally special.

5
src/core/unit.c
View File

@ -2225,6 +2225,11 @@ int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_referen
return 0;
}
if (d == UNIT_BEFORE && other->type == UNIT_DEVICE) {
log_unit_warning(u, "Dependency Before=%s ignored (.device units cannot be delayed)", other->id);
return 0;
}
r = set_ensure_allocated(&u->dependencies[d], NULL);
if (r < 0)
return r;