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systemctl: is-failed: check if system is degraded when no unit given

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Closes #3335
This commit is contained in:
Mike Yuan 2023-10-17 20:47:54 +08:00
parent def1e20a18
commit 2ee346160c
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GPG key ID: 417471C0A40F58B3
4 changed files with 35 additions and 10 deletions
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13
man/systemctl.xml
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@ -219,15 +219,14 @@ Sun 2017-02-26 20:57:49 EST 2h 3min left Sun 2017-02-26 11:56:36 EST 6h ago
</varlistentry>
<varlistentry>
<term><command>is-failed <replaceable>PATTERN</replaceable>…</command></term>
<term><command>is-failed <optional><replaceable>PATTERN</replaceable>…</optional></command></term>
<listitem>
<para>Check whether any of the specified units are in a
"failed" state. Returns an exit code
<constant>0</constant> if at least one has failed,
non-zero otherwise. Unless <option>--quiet</option> is
specified, this will also print the current unit state to
standard output.</para>
<para>Check whether any of the specified units is in the "failed" state. If no unit is specified,
check whether there are any failed units, which corresponds to the <literal>degraded</literal> state
returned by <command>is-system-running</command>. Returns an exit code <constant>0</constant>
if at least one has failed, non-zero otherwise. Unless <option>--quiet</option> is specified, this
will also print the current unit or system state to standard output.</para>
<xi:include href="version-info.xml" xpointer="v197"/>
</listitem>

25
src/systemctl/systemctl-is-active.c
View file

@ -69,5 +69,28 @@ int verb_is_failed(int argc, char *argv[], void *userdata) {
UNIT_FAILED,
};
return check_unit_generic(EXIT_PROGRAM_DEAD_AND_PID_EXISTS, states, ELEMENTSOF(states), strv_skip(argv, 1));
int r;
if (argc > 1)
return check_unit_generic(EXIT_PROGRAM_DEAD_AND_PID_EXISTS, states, ELEMENTSOF(states), strv_skip(argv, 1));
/* If no unit is provided, we check SystemState property of the manager, i.e. whether there're failed
* units. */
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *state = NULL;
sd_bus *bus;
r = acquire_bus(BUS_MANAGER, &bus);
if (r < 0)
return r;
r = bus_get_property_string(bus, bus_systemd_mgr, "SystemState", &error, &state);
if (r < 0)
return log_error_errno(r, "Failed to query system state: %s", bus_error_message(&error, r));
if (!arg_quiet)
puts(state);
return streq(state, "degraded") ? EXIT_SUCCESS : EXIT_FAILURE;
}

5
src/systemctl/systemctl.c
View file

@ -162,7 +162,8 @@ static int systemctl_help(void) {
" list-timers [PATTERN...] List timer units currently in memory,\n"
" ordered by next elapse\n"
" is-active PATTERN... Check whether units are active\n"
" is-failed PATTERN... Check whether units are failed\n"
" is-failed [PATTERN...] Check whether units are failed or\n"
" system is in degraded state\n"
" status [PATTERN...|PID...] Show runtime status of one or more units\n"
" show [PATTERN...|JOB...] Show properties of one or more\n"
" units/jobs or the manager\n"
@ -1165,7 +1166,7 @@ static int systemctl_main(int argc, char *argv[]) {
{ "thaw", 2, VERB_ANY, VERB_ONLINE_ONLY, verb_clean_or_freeze },
{ "is-active", 2, VERB_ANY, VERB_ONLINE_ONLY, verb_is_active },
{ "check", 2, VERB_ANY, VERB_ONLINE_ONLY, verb_is_active }, /* deprecated alias of is-active */
{ "is-failed", 2, VERB_ANY, VERB_ONLINE_ONLY, verb_is_failed },
{ "is-failed", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_is_failed },
{ "show", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_show },
{ "cat", 2, VERB_ANY, VERB_ONLINE_ONLY, verb_cat },
{ "status", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, verb_show },

2
test/units/testsuite-26.sh
View file

@ -135,6 +135,8 @@ systemctl restart "$UNIT_NAME"
systemctl stop "$UNIT_NAME"
(! systemctl is-active "$UNIT_NAME")
assert_eq "$(systemctl is-system-running)" "$(systemctl is-failed)"
# enable/disable/preset
test_enable_disable_preset() {
(! systemctl is-enabled "$@" "$UNIT_NAME")