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d06e61996d
This allows accompanying a signal with a value (as supported for Linux Realtime signals). This is particularly useful as it allows us to do stuff like this: systemctl kill --kill-whom=main --kill-value=0x300 systemd-journald In order to ask journald to flush its allocation caches and compact memory.
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "bus-error.h"
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#include "bus-locator.h"
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#include "systemctl-kill.h"
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#include "systemctl-util.h"
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#include "systemctl.h"
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int verb_kill(int argc, char *argv[], void *userdata) {
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_cleanup_strv_free_ char **names = NULL;
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const char *kill_whom;
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sd_bus *bus;
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int r, q;
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r = acquire_bus(BUS_MANAGER, &bus);
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if (r < 0)
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return r;
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polkit_agent_open_maybe();
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kill_whom = arg_kill_whom ?: "all";
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/* --fail was specified */
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if (streq(arg_job_mode(), "fail"))
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kill_whom = strjoina(kill_whom, "-fail");
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r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL);
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if (r < 0)
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return log_error_errno(r, "Failed to expand names: %m");
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STRV_FOREACH(name, names) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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if (arg_kill_value_set)
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q = bus_call_method(
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bus,
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bus_systemd_mgr,
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"QueueSignalUnit",
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&error,
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NULL,
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"ssii", *name, kill_whom, arg_signal, arg_kill_value);
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else
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q = bus_call_method(
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bus,
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bus_systemd_mgr,
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"KillUnit",
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&error,
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NULL,
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"ssi", *name, kill_whom, arg_signal);
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if (q < 0) {
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log_error_errno(q, "Failed to kill unit %s: %s", *name, bus_error_message(&error, q));
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if (r == 0)
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r = q;
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}
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}
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return r;
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}
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