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From 2820f1706275acd787c72d9a57892200566f0bbe Mon Sep 17 00:00:00 2001
From: Daan De Meyer <[email protected]>
Date: Mon, 18 Oct 2021 14:17:02 +0200
Subject: [PATCH] core: Propagate condition failed state to triggering units.
Alternative to https://github.com/systemd/systemd/pull/20531.
Whenever a service triggered by another unit fails condition checks,
stop the triggering unit to prevent systemd busy looping trying to
start the triggered unit.
(cherry picked from commit 12ab94a1e4961a39c32efb60b71866ab588d3ea2)
Resolves: #2065322
---
src/core/automount.c | 14 ++++++++++----
src/core/automount.h | 1 +
src/core/path.c | 16 +++++++++++-----
src/core/path.h | 1 +
src/core/socket.c | 28 +++++++++++++++++++---------
src/core/socket.h | 1 +
src/core/timer.c | 12 +++++++++---
src/core/timer.h | 1 +
src/core/unit.c | 10 ++++++++++
src/core/unit.h | 2 ++
10 files changed, 65 insertions(+), 21 deletions(-)
diff --git a/src/core/automount.c b/src/core/automount.c
index c1c513d4a5..bac3b2fab7 100644
--- a/src/core/automount.c
+++ b/src/core/automount.c
@@ -776,6 +776,11 @@ static void automount_enter_running(Automount *a) {
goto fail;
}
+ if (unit_has_failed_condition_or_assert(trigger)) {
+ automount_enter_dead(a, AUTOMOUNT_FAILURE_MOUNT_CONDITION_FAILED);
+ return;
+ }
+
r = manager_add_job(UNIT(a)->manager, JOB_START, trigger, JOB_REPLACE, NULL, &error, NULL);
if (r < 0) {
log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r));
@@ -1087,10 +1092,11 @@ static int automount_can_start(Unit *u) {
}
static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = {
- [AUTOMOUNT_SUCCESS] = "success",
- [AUTOMOUNT_FAILURE_RESOURCES] = "resources",
- [AUTOMOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
- [AUTOMOUNT_FAILURE_MOUNT_START_LIMIT_HIT] = "mount-start-limit-hit",
+ [AUTOMOUNT_SUCCESS] = "success",
+ [AUTOMOUNT_FAILURE_RESOURCES] = "resources",
+ [AUTOMOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
+ [AUTOMOUNT_FAILURE_MOUNT_START_LIMIT_HIT] = "mount-start-limit-hit",
+ [AUTOMOUNT_FAILURE_MOUNT_CONDITION_FAILED] = "mount-condition-failed",
};
DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult);
diff --git a/src/core/automount.h b/src/core/automount.h
index 21dd1c0774..a7417d195c 100644
--- a/src/core/automount.h
+++ b/src/core/automount.h
@@ -10,6 +10,7 @@ typedef enum AutomountResult {
AUTOMOUNT_FAILURE_RESOURCES,
AUTOMOUNT_FAILURE_START_LIMIT_HIT,
AUTOMOUNT_FAILURE_MOUNT_START_LIMIT_HIT,
+ AUTOMOUNT_FAILURE_MOUNT_CONDITION_FAILED,
_AUTOMOUNT_RESULT_MAX,
_AUTOMOUNT_RESULT_INVALID = -1
} AutomountResult;
diff --git a/src/core/path.c b/src/core/path.c
index c2facf0b16..bf7e1bf3c2 100644
--- a/src/core/path.c
+++ b/src/core/path.c
@@ -453,7 +453,7 @@ static void path_enter_dead(Path *p, PathResult f) {
else
unit_log_failure(UNIT(p), path_result_to_string(p->result));
- path_set_state(p, p->result != PATH_SUCCESS ? PATH_FAILED : PATH_DEAD);
+ path_set_state(p, p->result == PATH_SUCCESS ? PATH_DEAD : PATH_FAILED);
}
static void path_enter_running(Path *p) {
@@ -711,6 +711,11 @@ static void path_trigger_notify(Unit *u, Unit *other) {
return;
}
+ if (unit_has_failed_condition_or_assert(other)) {
+ path_enter_dead(p, PATH_FAILURE_UNIT_CONDITION_FAILED);
+ return;
+ }
+
/* Don't propagate anything if there's still a job queued */
if (other->job)
return;
@@ -763,10 +768,11 @@ static const char* const path_type_table[_PATH_TYPE_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(path_type, PathType);
static const char* const path_result_table[_PATH_RESULT_MAX] = {
- [PATH_SUCCESS] = "success",
- [PATH_FAILURE_RESOURCES] = "resources",
- [PATH_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
- [PATH_FAILURE_UNIT_START_LIMIT_HIT] = "unit-start-limit-hit",
+ [PATH_SUCCESS] = "success",
+ [PATH_FAILURE_RESOURCES] = "resources",
+ [PATH_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
+ [PATH_FAILURE_UNIT_START_LIMIT_HIT] = "unit-start-limit-hit",
+ [PATH_FAILURE_UNIT_CONDITION_FAILED] = "unit-condition-failed",
};
DEFINE_STRING_TABLE_LOOKUP(path_result, PathResult);
diff --git a/src/core/path.h b/src/core/path.h
index 8a69f06c13..0ad6bd12c6 100644
--- a/src/core/path.h
+++ b/src/core/path.h
@@ -46,6 +46,7 @@ typedef enum PathResult {
PATH_FAILURE_RESOURCES,
PATH_FAILURE_START_LIMIT_HIT,
PATH_FAILURE_UNIT_START_LIMIT_HIT,
+ PATH_FAILURE_UNIT_CONDITION_FAILED,
_PATH_RESULT_MAX,
_PATH_RESULT_INVALID = -1
} PathResult;
diff --git a/src/core/socket.c b/src/core/socket.c
index 74c1cc70cb..6f9a0f7575 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -2272,6 +2272,15 @@ static void socket_enter_running(Socket *s, int cfd) {
goto refuse;
}
+ if (UNIT_ISSET(s->service) && cfd < 0) {
+ Unit *service = UNIT_DEREF(s->service);
+
+ if (unit_has_failed_condition_or_assert(service)) {
+ socket_enter_dead(s, SOCKET_FAILURE_SERVICE_CONDITION_FAILED);
+ return;
+ }
+ }
+
if (cfd < 0) {
bool pending = false;
Unit *other;
@@ -3287,15 +3296,16 @@ static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
static const char* const socket_result_table[_SOCKET_RESULT_MAX] = {
- [SOCKET_SUCCESS] = "success",
- [SOCKET_FAILURE_RESOURCES] = "resources",
- [SOCKET_FAILURE_TIMEOUT] = "timeout",
- [SOCKET_FAILURE_EXIT_CODE] = "exit-code",
- [SOCKET_FAILURE_SIGNAL] = "signal",
- [SOCKET_FAILURE_CORE_DUMP] = "core-dump",
- [SOCKET_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
- [SOCKET_FAILURE_TRIGGER_LIMIT_HIT] = "trigger-limit-hit",
- [SOCKET_FAILURE_SERVICE_START_LIMIT_HIT] = "service-start-limit-hit"
+ [SOCKET_SUCCESS] = "success",
+ [SOCKET_FAILURE_RESOURCES] = "resources",
+ [SOCKET_FAILURE_TIMEOUT] = "timeout",
+ [SOCKET_FAILURE_EXIT_CODE] = "exit-code",
+ [SOCKET_FAILURE_SIGNAL] = "signal",
+ [SOCKET_FAILURE_CORE_DUMP] = "core-dump",
+ [SOCKET_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
+ [SOCKET_FAILURE_TRIGGER_LIMIT_HIT] = "trigger-limit-hit",
+ [SOCKET_FAILURE_SERVICE_START_LIMIT_HIT] = "service-start-limit-hit",
+ [SOCKET_FAILURE_SERVICE_CONDITION_FAILED] = "service-condition-failed",
};
DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult);
diff --git a/src/core/socket.h b/src/core/socket.h
index 2409dbf2a0..b171b94316 100644
--- a/src/core/socket.h
+++ b/src/core/socket.h
@@ -39,6 +39,7 @@ typedef enum SocketResult {
SOCKET_FAILURE_START_LIMIT_HIT,
SOCKET_FAILURE_TRIGGER_LIMIT_HIT,
SOCKET_FAILURE_SERVICE_START_LIMIT_HIT,
+ SOCKET_FAILURE_SERVICE_CONDITION_FAILED,
_SOCKET_RESULT_MAX,
_SOCKET_RESULT_INVALID = -1
} SocketResult;
diff --git a/src/core/timer.c b/src/core/timer.c
index 990f05fee4..3c8d89771d 100644
--- a/src/core/timer.c
+++ b/src/core/timer.c
@@ -567,6 +567,11 @@ static void timer_enter_running(Timer *t) {
return;
}
+ if (unit_has_failed_condition_or_assert(trigger)) {
+ timer_enter_dead(t, TIMER_FAILURE_UNIT_CONDITION_FAILED);
+ return;
+ }
+
r = manager_add_job(UNIT(t)->manager, JOB_START, trigger, JOB_REPLACE, NULL, &error, NULL);
if (r < 0)
goto fail;
@@ -850,9 +855,10 @@ static const char* const timer_base_table[_TIMER_BASE_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase);
static const char* const timer_result_table[_TIMER_RESULT_MAX] = {
- [TIMER_SUCCESS] = "success",
- [TIMER_FAILURE_RESOURCES] = "resources",
- [TIMER_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
+ [TIMER_SUCCESS] = "success",
+ [TIMER_FAILURE_RESOURCES] = "resources",
+ [TIMER_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
+ [TIMER_FAILURE_UNIT_CONDITION_FAILED] = "unit-condition-failed",
};
DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult);
diff --git a/src/core/timer.h b/src/core/timer.h
index 833aadb0b8..d23e19d622 100644
--- a/src/core/timer.h
+++ b/src/core/timer.h
@@ -32,6 +32,7 @@ typedef enum TimerResult {
TIMER_SUCCESS,
TIMER_FAILURE_RESOURCES,
TIMER_FAILURE_START_LIMIT_HIT,
+ TIMER_FAILURE_UNIT_CONDITION_FAILED,
_TIMER_RESULT_MAX,
_TIMER_RESULT_INVALID = -1
} TimerResult;
diff --git a/src/core/unit.c b/src/core/unit.c
index b825e2418c..c00d30e837 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -5657,6 +5657,16 @@ int unit_thaw_vtable_common(Unit *u) {
return unit_cgroup_freezer_action(u, FREEZER_THAW);
}
+bool unit_has_failed_condition_or_assert(Unit *u) {
+ if (dual_timestamp_is_set(&u->condition_timestamp) && !u->condition_result)
+ return true;
+
+ if (dual_timestamp_is_set(&u->assert_timestamp) && !u->assert_result)
+ return true;
+
+ return false;
+}
+
static const char* const collect_mode_table[_COLLECT_MODE_MAX] = {
[COLLECT_INACTIVE] = "inactive",
[COLLECT_INACTIVE_OR_FAILED] = "inactive-or-failed",
diff --git a/src/core/unit.h b/src/core/unit.h
index b8b914711f..a924bd2e83 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -847,6 +847,8 @@ void unit_thawed(Unit *u);
int unit_freeze_vtable_common(Unit *u);
int unit_thaw_vtable_common(Unit *u);
+bool unit_has_failed_condition_or_assert(Unit *u);
+
/* Macros which append UNIT= or USER_UNIT= to the message */
#define log_unit_full(unit, level, error, ...) \
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