transaction: maintain anchor_job

Track which job is the anchor in the transaction.

3 files changed, 23 insertions, 25 deletions

diff --git a/src/core/manager.c b/src/core/manager.c
index f070295d88..636aaa364b 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -656,7 +656,6 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
 
 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
         int r;
-        Job *ret;
         Transaction *tr;
 
         assert(m);
@@ -682,7 +681,7 @@ int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool ove
 
         r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
                                                  mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
-                                                 mode == JOB_IGNORE_DEPENDENCIES, e, &ret);
+                                                 mode == JOB_IGNORE_DEPENDENCIES, e);
         if (r < 0)
                 goto tr_abort;
 
@@ -696,10 +695,10 @@ int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool ove
         if (r < 0)
                 goto tr_abort;
 
-        log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) ret->id);
+        log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) tr->anchor_job->id);
 
         if (_ret)
-                *_ret = ret;
+                *_ret = tr->anchor_job;
 
         transaction_free(tr);
         return 0;
diff --git a/src/core/transaction.c b/src/core/transaction.c
index c00dd452eb..d7ecfdb446 100644
--- a/src/core/transaction.c
+++ b/src/core/transaction.c
@@ -834,8 +834,7 @@ int transaction_add_job_and_dependencies(
                 bool conflicts,
                 bool ignore_requirements,
                 bool ignore_order,
-                DBusError *e,
-                Job **_ret) {
+                DBusError *e) {
         Job *ret;
         JobDependency *l;
         Iterator i;
@@ -892,8 +891,11 @@ int transaction_add_job_and_dependencies(
                 return -ENOMEM;
 
         /* If the link has no subject job, it's the anchor link. */
-        if (!by)
+        if (!by) {
                 LIST_PREPEND(JobDependency, subject, tr->anchor, l);
+                if (!tr->anchor_job)
+                        tr->anchor_job = ret;
+        }
 
         if (is_new && !ignore_requirements) {
                 Set *following;
@@ -902,7 +904,7 @@ int transaction_add_job_and_dependencies(
                  * add all dependencies of everybody following. */
                 if (unit_following_set(ret->unit, &following) > 0) {
                         SET_FOREACH(dep, following, i) {
-                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, false, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, false, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -917,7 +919,7 @@ int transaction_add_job_and_dependencies(
                 /* Finally, recursively add in all dependencies. */
                 if (type == JOB_START || type == JOB_RELOAD_OR_START) {
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, true, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -928,7 +930,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_BIND_TO], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, true, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -939,7 +941,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, !override, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, !override, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -949,7 +951,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_WANTS], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, false, false, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_START, dep, ret, false, false, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -959,7 +961,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -970,7 +972,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -980,7 +982,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTS], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -991,7 +993,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_CONFLICTED_BY], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -1005,7 +1007,7 @@ int transaction_add_job_and_dependencies(
                 if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_REQUIRED_BY], i) {
-                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, true, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, true, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1016,7 +1018,7 @@ int transaction_add_job_and_dependencies(
                         }
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_BOUND_BY], i) {
-                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, true, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, type, dep, ret, true, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1030,7 +1032,7 @@ int transaction_add_job_and_dependencies(
                 if (type == JOB_RELOAD || type == JOB_RELOAD_OR_START) {
 
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_PROPAGATE_RELOAD_TO], i) {
-                                r = transaction_add_job_and_dependencies(tr, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e, NULL);
+                                r = transaction_add_job_and_dependencies(tr, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e);
                                 if (r < 0) {
                                         log_warning("Cannot add dependency reload job for unit %s, ignoring: %s", dep->id, bus_error(e, r));
 
@@ -1043,9 +1045,6 @@ int transaction_add_job_and_dependencies(
                 /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */
         }
 
-        if (_ret)
-                *_ret = ret;
-
         return 0;
 
 fail:
@@ -1078,7 +1077,7 @@ int transaction_add_isolate_jobs(Transaction *tr, Manager *m) {
                 if (hashmap_get(tr->jobs, u))
                         continue;
 
-                r = transaction_add_job_and_dependencies(tr, JOB_STOP, u, NULL, true, false, false, false, false, NULL, NULL);
+                r = transaction_add_job_and_dependencies(tr, JOB_STOP, u, NULL, true, false, false, false, false, NULL);
                 if (r < 0)
                         log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->id, strerror(-r));
         }
diff --git a/src/core/transaction.h b/src/core/transaction.h
index d519ffb1f5..4818cea38e 100644
--- a/src/core/transaction.h
+++ b/src/core/transaction.h
@@ -12,6 +12,7 @@ struct Transaction {
         /* Jobs to be added */
         Hashmap *jobs;      /* Unit object => Job object list 1:1 */
         JobDependency *anchor;
+        Job *anchor_job;      /* the job the user asked for */
 };
 
 Transaction *transaction_new(void);
@@ -27,8 +28,7 @@ int transaction_add_job_and_dependencies(
                 bool conflicts,
                 bool ignore_requirements,
                 bool ignore_order,
-                DBusError *e,
-                Job **_ret);
+                DBusError *e);
 int transaction_activate(Transaction *tr, Manager *m, JobMode mode, DBusError *e);
 int transaction_add_isolate_jobs(Transaction *tr, Manager *m);
 void transaction_abort(Transaction *tr);