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-rw-r--r--src/core/dbus-job.c6
-rw-r--r--src/core/job.c162
-rw-r--r--src/core/job.h6
-rw-r--r--src/core/unit.c47
-rw-r--r--src/core/unit.h4
5 files changed, 204 insertions, 21 deletions
diff --git a/src/core/dbus-job.c b/src/core/dbus-job.c
index ef839ffb55..4b20d495eb 100644
--- a/src/core/dbus-job.c
+++ b/src/core/dbus-job.c
@@ -232,7 +232,7 @@ static int job_send_message(Job *j, DBusMessage* (*new_message)(Job *j)) {
assert(j);
assert(new_message);
- if (bus_has_subscriber(j->manager)) {
+ if (bus_has_subscriber(j->manager) || j->forgot_bus_clients) {
m = new_message(j);
if (!m)
goto oom;
@@ -347,7 +347,7 @@ void bus_job_send_change_signal(Job *j) {
j->in_dbus_queue = false;
}
- if (!bus_has_subscriber(j->manager) && !j->bus_client_list) {
+ if (!bus_has_subscriber(j->manager) && !j->bus_client_list && !j->forgot_bus_clients) {
j->sent_dbus_new_signal = true;
return;
}
@@ -366,7 +366,7 @@ oom:
void bus_job_send_removed_signal(Job *j) {
assert(j);
- if (!bus_has_subscriber(j->manager) && !j->bus_client_list)
+ if (!bus_has_subscriber(j->manager) && !j->bus_client_list && !j->forgot_bus_clients)
return;
if (!j->sent_dbus_new_signal)
diff --git a/src/core/job.c b/src/core/job.c
index 07d4fc3cc0..326460d525 100644
--- a/src/core/job.c
+++ b/src/core/job.c
@@ -47,22 +47,36 @@ JobBusClient* job_bus_client_new(DBusConnection *connection, const char *name) {
return cl;
}
-Job* job_new(Unit *unit, JobType type) {
+Job* job_new_raw(Unit *unit) {
Job *j;
- assert(type < _JOB_TYPE_MAX);
+ /* used for deserialization */
+
assert(unit);
- if (!(j = new0(Job, 1)))
+ j = new0(Job, 1);
+ if (!j)
return NULL;
j->manager = unit->manager;
- j->id = j->manager->current_job_id++;
- j->type = type;
j->unit = unit;
-
j->timer_watch.type = WATCH_INVALID;
+ return j;
+}
+
+Job* job_new(Unit *unit, JobType type) {
+ Job *j;
+
+ assert(type < _JOB_TYPE_MAX);
+
+ j = job_new_raw(unit);
+ if (!j)
+ return NULL;
+
+ j->id = j->manager->current_job_id++;
+ j->type = type;
+
/* We don't link it here, that's what job_dependency() is for */
return j;
@@ -105,7 +119,9 @@ void job_uninstall(Job *j) {
assert(j->unit->job == j);
/* Detach from next 'bigger' objects */
- bus_job_send_removed_signal(j);
+ /* daemon-reload should be transparent to job observers */
+ if (j->manager->n_reloading <= 0)
+ bus_job_send_removed_signal(j);
j->unit->job = NULL;
unit_add_to_gc_queue(j->unit);
@@ -180,6 +196,18 @@ Job* job_install(Job *j) {
return j;
}
+void job_install_deserialized(Job *j) {
+ assert(!j->installed);
+
+ if (j->unit->job) {
+ log_debug("Unit %s already has a job installed. Not installing deserialized job.", j->unit->id);
+ return;
+ }
+ j->unit->job = j;
+ j->installed = true;
+ log_debug("Reinstalled deserialized job %s/%s as %u", j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
+}
+
JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) {
JobDependency *l;
@@ -733,6 +761,126 @@ void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w) {
job_finish_and_invalidate(j, JOB_TIMEOUT);
}
+int job_serialize(Job *j, FILE *f, FDSet *fds) {
+ fprintf(f, "job-id=%u\n", j->id);
+ fprintf(f, "job-type=%s\n", job_type_to_string(j->type));
+ fprintf(f, "job-state=%s\n", job_state_to_string(j->state));
+ fprintf(f, "job-override=%s\n", yes_no(j->override));
+ fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal));
+ fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order));
+ /* Cannot save bus clients. Just note the fact that we're losing
+ * them. job_send_message() will fallback to broadcasting. */
+ fprintf(f, "job-forgot-bus-clients=%s\n",
+ yes_no(j->forgot_bus_clients || j->bus_client_list));
+ if (j->timer_watch.type == WATCH_JOB_TIMER) {
+ int copy = fdset_put_dup(fds, j->timer_watch.fd);
+ if (copy < 0)
+ return copy;
+ fprintf(f, "job-timer-watch-fd=%d\n", copy);
+ }
+
+ /* End marker */
+ fputc('\n', f);
+ return 0;
+}
+
+int job_deserialize(Job *j, FILE *f, FDSet *fds) {
+ for (;;) {
+ char line[LINE_MAX], *l, *v;
+ size_t k;
+
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ return 0;
+ return -errno;
+ }
+
+ char_array_0(line);
+ l = strstrip(line);
+
+ /* End marker */
+ if (l[0] == 0)
+ return 0;
+
+ k = strcspn(l, "=");
+
+ if (l[k] == '=') {
+ l[k] = 0;
+ v = l+k+1;
+ } else
+ v = l+k;
+
+ if (streq(l, "job-id")) {
+ if (safe_atou32(v, &j->id) < 0)
+ log_debug("Failed to parse job id value %s", v);
+ } else if (streq(l, "job-type")) {
+ JobType t = job_type_from_string(v);
+ if (t < 0)
+ log_debug("Failed to parse job type %s", v);
+ else
+ j->type = t;
+ } else if (streq(l, "job-state")) {
+ JobState s = job_state_from_string(v);
+ if (s < 0)
+ log_debug("Failed to parse job state %s", v);
+ else
+ j->state = s;
+ } else if (streq(l, "job-override")) {
+ int b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse job override flag %s", v);
+ else
+ j->override = j->override || b;
+ } else if (streq(l, "job-sent-dbus-new-signal")) {
+ int b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse job sent_dbus_new_signal flag %s", v);
+ else
+ j->sent_dbus_new_signal = j->sent_dbus_new_signal || b;
+ } else if (streq(l, "job-ignore-order")) {
+ int b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse job ignore_order flag %s", v);
+ else
+ j->ignore_order = j->ignore_order || b;
+ } else if (streq(l, "job-forgot-bus-clients")) {
+ int b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse job forgot_bus_clients flag %s", v);
+ else
+ j->forgot_bus_clients = j->forgot_bus_clients || b;
+ } else if (streq(l, "job-timer-watch-fd")) {
+ int fd;
+ if (safe_atoi(v, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_debug("Failed to parse job-timer-watch-fd value %s", v);
+ else {
+ if (j->timer_watch.type == WATCH_JOB_TIMER)
+ close_nointr_nofail(j->timer_watch.fd);
+
+ j->timer_watch.type = WATCH_JOB_TIMER;
+ j->timer_watch.fd = fdset_remove(fds, fd);
+ j->timer_watch.data.job = j;
+ }
+ }
+ }
+}
+
+int job_coldplug(Job *j) {
+ struct epoll_event ev;
+
+ if (j->timer_watch.type != WATCH_JOB_TIMER)
+ return 0;
+
+ zero(ev);
+ ev.data.ptr = &j->timer_watch;
+ ev.events = EPOLLIN;
+
+ if (epoll_ctl(j->manager->epoll_fd, EPOLL_CTL_ADD, j->timer_watch.fd, &ev) < 0)
+ return -errno;
+
+ return 0;
+}
+
static const char* const job_state_table[_JOB_STATE_MAX] = {
[JOB_WAITING] = "waiting",
[JOB_RUNNING] = "running"
diff --git a/src/core/job.h b/src/core/job.h
index e869856d37..9da7e84a79 100644
--- a/src/core/job.h
+++ b/src/core/job.h
@@ -141,15 +141,21 @@ struct Job {
bool in_dbus_queue:1;
bool sent_dbus_new_signal:1;
bool ignore_order:1;
+ bool forgot_bus_clients:1;
};
JobBusClient* job_bus_client_new(DBusConnection *connection, const char *name);
Job* job_new(Unit *unit, JobType type);
+Job* job_new_raw(Unit *unit);
void job_free(Job *job);
Job* job_install(Job *j);
+void job_install_deserialized(Job *j);
void job_uninstall(Job *j);
void job_dump(Job *j, FILE*f, const char *prefix);
+int job_serialize(Job *j, FILE *f, FDSet *fds);
+int job_deserialize(Job *j, FILE *f, FDSet *fds);
+int job_coldplug(Job *j);
JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts);
void job_dependency_free(JobDependency *l);
diff --git a/src/core/unit.c b/src/core/unit.c
index ed3f176393..1f8d52b3ca 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -2288,8 +2288,10 @@ int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
return r;
- if (u->job)
- unit_serialize_item(u, f, "job", job_type_to_string(u->job->type));
+ if (u->job) {
+ fprintf(f, "job\n");
+ job_serialize(u->job, f, fds);
+ }
dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp);
dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp);
@@ -2368,13 +2370,32 @@ int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
v = l+k;
if (streq(l, "job")) {
- JobType type;
-
- if ((type = job_type_from_string(v)) < 0)
- log_debug("Failed to parse job type value %s", v);
- else
- u->deserialized_job = type;
+ if (v[0] == '\0') {
+ /* new-style serialized job */
+ Job *j = job_new_raw(u);
+ if (!j)
+ return -ENOMEM;
+
+ r = job_deserialize(j, f, fds);
+ if (r < 0) {
+ job_free(j);
+ return r;
+ }
+ job_install_deserialized(j);
+ r = hashmap_put(u->manager->jobs, UINT32_TO_PTR(j->id), j);
+ if (r < 0) {
+ job_free(j);
+ return r;
+ }
+ } else {
+ /* legacy */
+ JobType type = job_type_from_string(v);
+ if (type < 0)
+ log_debug("Failed to parse job type value %s", v);
+ else
+ u->deserialized_job = type;
+ }
continue;
} else if (streq(l, "inactive-exit-timestamp")) {
dual_timestamp_deserialize(v, &u->inactive_exit_timestamp);
@@ -2450,8 +2471,14 @@ int unit_coldplug(Unit *u) {
if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0)
return r;
- if (u->deserialized_job >= 0) {
- if ((r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL)) < 0)
+ if (u->job) {
+ r = job_coldplug(u->job);
+ if (r < 0)
+ return r;
+ } else if (u->deserialized_job >= 0) {
+ /* legacy */
+ r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL);
+ if (r < 0)
return r;
u->deserialized_job = _JOB_TYPE_INVALID;
diff --git a/src/core/unit.h b/src/core/unit.h
index d8f4644ca9..1b777bfaab 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -200,7 +200,9 @@ struct Unit {
unsigned gc_marker;
/* When deserializing, temporarily store the job type for this
- * unit here, if there was a job scheduled */
+ * unit here, if there was a job scheduled.
+ * Only for deserializing from a legacy version. New style uses full
+ * serialized jobs. */
int deserialized_job; /* This is actually of type JobType */
/* Error code when we didn't manage to load the unit (negative) */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 04:46:57 +0000