chiark / gitweb /
unit: use weaker dependencies between mount and device units in --user mode
[elogind.git] / src / core / transaction.c
index d00f427..64c2af5 100644 (file)
@@ -22,8 +22,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 
-#include "bus-errors.h"
-#include "bus-util.h"
+#include "bus-common-errors.h"
 #include "bus-error.h"
 #include "transaction.h"
 
@@ -189,11 +188,11 @@ static int delete_one_unmergeable_job(Transaction *tr, Job *j) {
                                  * another unit in which case we
                                  * rather remove the start. */
 
-                                log_debug_unit(j->unit->id,
+                                log_unit_debug(j->unit->id,
                                                "Looking at job %s/%s conflicted_by=%s",
                                                j->unit->id, job_type_to_string(j->type),
                                                yes_no(j->type == JOB_STOP && job_is_conflicted_by(j)));
-                                log_debug_unit(k->unit->id,
+                                log_unit_debug(k->unit->id,
                                                "Looking at job %s/%s conflicted_by=%s",
                                                k->unit->id, job_type_to_string(k->type),
                                                yes_no(k->type == JOB_STOP && job_is_conflicted_by(k)));
@@ -222,7 +221,7 @@ static int delete_one_unmergeable_job(Transaction *tr, Job *j) {
                                 return -ENOEXEC;
 
                         /* Ok, we can drop one, so let's do so. */
-                        log_debug_unit(d->unit->id,
+                        log_unit_debug(d->unit->id,
                                        "Fixing conflicting jobs %s/%s,%s/%s by deleting job %s/%s",
                                        j->unit->id, job_type_to_string(j->type),
                                        k->unit->id, job_type_to_string(k->type),
@@ -264,10 +263,12 @@ static int transaction_merge_jobs(Transaction *tr, sd_bus_error *e) {
                                 return -EAGAIN;
 
                         /* We couldn't merge anything. Failure */
-                        sd_bus_error_setf(
-                                        e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.",
-                                        job_type_to_string(t), job_type_to_string(k->type), k->unit->id);
-                        return r;
+                        return sd_bus_error_setf(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING,
+                                                 "Transaction contains conflicting jobs '%s' and '%s' for %s. "
+                                                 "Probably contradicting requirement dependencies configured.",
+                                                 job_type_to_string(t),
+                                                 job_type_to_string(k->type),
+                                                 k->unit->id);
                 }
         }
 
@@ -366,7 +367,7 @@ static int transaction_verify_order_one(Transaction *tr, Job *j, Job *from, unsi
                  * job to remove. We use the marker to find our way
                  * back, since smart how we are we stored our way back
                  * in there. */
-                log_warning_unit(j->unit->id,
+                log_unit_warning(j->unit->id,
                                  "Found ordering cycle on %s/%s",
                                  j->unit->id, job_type_to_string(j->type));
 
@@ -374,11 +375,11 @@ static int transaction_verify_order_one(Transaction *tr, Job *j, Job *from, unsi
                 for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) {
 
                         /* logging for j not k here here to provide consistent narrative */
-                        log_info_unit(j->unit->id,
-                                      "Found dependency on %s/%s",
-                                      k->unit->id, job_type_to_string(k->type));
+                        log_unit_warning(j->unit->id,
+                                         "Found dependency on %s/%s",
+                                         k->unit->id, job_type_to_string(k->type));
 
-                        if (!delete &&
+                        if (!delete && hashmap_get(tr->jobs, k->unit) &&
                             !unit_matters_to_anchor(k->unit, k)) {
                                 /* Ok, we can drop this one, so let's
                                  * do so. */
@@ -394,10 +395,10 @@ static int transaction_verify_order_one(Transaction *tr, Job *j, Job *from, unsi
 
                 if (delete) {
                         /* logging for j not k here here to provide consistent narrative */
-                        log_warning_unit(j->unit->id,
+                        log_unit_warning(j->unit->id,
                                          "Breaking ordering cycle by deleting job %s/%s",
                                          delete->unit->id, job_type_to_string(delete->type));
-                        log_error_unit(delete->unit->id,
+                        log_unit_error(delete->unit->id,
                                        "Job %s/%s deleted to break ordering cycle starting with %s/%s",
                                        delete->unit->id, job_type_to_string(delete->type),
                                        j->unit->id, job_type_to_string(j->type));
@@ -409,9 +410,8 @@ static int transaction_verify_order_one(Transaction *tr, Job *j, Job *from, unsi
 
                 log_error("Unable to break cycle");
 
-                sd_bus_error_setf(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC,
-                                  "Transaction order is cyclic. See system logs for details.");
-                return -ENOEXEC;
+                return sd_bus_error_setf(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC,
+                                         "Transaction order is cyclic. See system logs for details.");
         }
 
         /* Make the marker point to where we come from, so that we can
@@ -510,11 +510,9 @@ static int transaction_is_destructive(Transaction *tr, JobMode mode, sd_bus_erro
                 assert(!j->transaction_next);
 
                 if (j->unit->job && (mode == JOB_FAIL || j->unit->job->irreversible) &&
-                    !job_type_is_superset(j->type, j->unit->job->type)) {
-
-                        sd_bus_error_setf(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive.");
-                        return -EEXIST;
-                }
+                    job_type_is_conflicting(j->unit->job->type, j->type))
+                        return sd_bus_error_setf(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE,
+                                                 "Transaction is destructive.");
         }
 
         return 0;
@@ -553,17 +551,17 @@ rescan:
                                 continue;
 
                         if (stops_running_service)
-                                log_debug_unit(j->unit->id,
+                                log_unit_debug(j->unit->id,
                                                "%s/%s would stop a running service.",
                                                j->unit->id, job_type_to_string(j->type));
 
                         if (changes_existing_job)
-                                log_debug_unit(j->unit->id,
+                                log_unit_debug(j->unit->id,
                                                "%s/%s would change existing job.",
                                                j->unit->id, job_type_to_string(j->type));
 
                         /* Ok, let's get rid of this */
-                        log_debug_unit(j->unit->id,
+                        log_unit_debug(j->unit->id,
                                        "Deleting %s/%s to minimize impact.",
                                        j->unit->id, job_type_to_string(j->type));
 
@@ -723,10 +721,8 @@ int transaction_activate(Transaction *tr, Manager *m, JobMode mode, sd_bus_error
 
         /* Tenth step: apply changes */
         r = transaction_apply(tr, m, mode);
-        if (r < 0) {
-                log_warning("Failed to apply transaction: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_warning_errno(r, "Failed to apply transaction: %m");
 
         assert(hashmap_isempty(tr->jobs));
 
@@ -820,7 +816,7 @@ static void transaction_unlink_job(Transaction *tr, Job *j, bool delete_dependen
                 job_dependency_free(j->object_list);
 
                 if (other && delete_dependencies) {
-                        log_debug_unit(other->unit->id,
+                        log_unit_debug(other->unit->id,
                                        "Deleting job %s/%s as dependency of job %s/%s",
                                        other->unit->id, job_type_to_string(other->type),
                                        j->unit->id, job_type_to_string(j->type));
@@ -856,41 +852,39 @@ int transaction_add_job_and_dependencies(
         /*           by ? by->unit->id : "NA", */
         /*           by ? job_type_to_string(by->type) : "NA"); */
 
-        if (unit->load_state != UNIT_LOADED &&
-            unit->load_state != UNIT_ERROR &&
-            unit->load_state != UNIT_NOT_FOUND &&
-            unit->load_state != UNIT_MASKED) {
-                sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->id);
-                return -EINVAL;
-        }
+        if (!IN_SET(unit->load_state, UNIT_LOADED, UNIT_ERROR, UNIT_NOT_FOUND, UNIT_MASKED))
+                return sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
+                                         "Unit %s is not loaded properly.", unit->id);
 
         if (type != JOB_STOP && unit->load_state == UNIT_ERROR) {
-                sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
-                               "Unit %s failed to load: %s. "
-                               "See system logs and 'systemctl status %s' for details.",
-                               unit->id,
-                               strerror(-unit->load_error),
-                               unit->id);
-                return -EINVAL;
+                if (unit->load_error == -ENOENT || unit->manager->test_run)
+                        return sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
+                                                 "Unit %s failed to load: %s.",
+                                                 unit->id,
+                                                 strerror(-unit->load_error));
+                else
+                        return sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
+                                                 "Unit %s failed to load: %s. "
+                                                 "See system logs and 'systemctl status %s' for details.",
+                                                 unit->id,
+                                                 strerror(-unit->load_error),
+                                                 unit->id);
         }
 
-        if (type != JOB_STOP && unit->load_state == UNIT_NOT_FOUND) {
-                sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
-                               "Unit %s failed to load: %s.",
-                               unit->id,
-                               strerror(-unit->load_error));
-                return -EINVAL;
-        }
+        if (type != JOB_STOP && unit->load_state == UNIT_NOT_FOUND)
+                return sd_bus_error_setf(e, BUS_ERROR_LOAD_FAILED,
+                                         "Unit %s failed to load: %s.",
+                                         unit->id, strerror(-unit->load_error));
 
-        if (type != JOB_STOP && unit->load_state == UNIT_MASKED) {
-                sd_bus_error_setf(e, BUS_ERROR_UNIT_MASKED, "Unit %s is masked.", unit->id);
-                return -EADDRNOTAVAIL;
-        }
+        if (type != JOB_STOP && unit->load_state == UNIT_MASKED)
+                return sd_bus_error_setf(e, BUS_ERROR_UNIT_MASKED,
+                                         "Unit %s is masked.", unit->id);
+
+        if (!unit_job_is_applicable(unit, type))
+                return sd_bus_error_setf(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE,
+                                         "Job type %s is not applicable for unit %s.",
+                                         job_type_to_string(type), unit->id);
 
-        if (!unit_job_is_applicable(unit, type)) {
-                sd_bus_error_setf(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, "Job type %s is not applicable for unit %s.", job_type_to_string(type), unit->id);
-                return -EBADR;
-        }
 
         /* First add the job. */
         ret = transaction_add_one_job(tr, type, unit, override, &is_new);
@@ -918,7 +912,7 @@ int transaction_add_job_and_dependencies(
                         SET_FOREACH(dep, following, i) {
                                 r = transaction_add_job_and_dependencies(tr, type, dep, ret, false, override, false, false, ignore_order, e);
                                 if (r < 0) {
-                                        log_warning_unit(dep->id,
+                                        log_unit_warning(dep->id,
                                                          "Cannot add dependency job for unit %s, ignoring: %s",
                                                          dep->id, bus_error_message(e, r));
 
@@ -957,7 +951,8 @@ 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);
                                 if (r < 0) {
-                                        log_full_unit(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING, dep->id,
+                                        log_unit_full(dep->id,
+                                                      r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING,
                                                       "Cannot add dependency job for unit %s, ignoring: %s",
                                                       dep->id, bus_error_message(e, r));
 
@@ -969,7 +964,8 @@ 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);
                                 if (r < 0) {
-                                        log_full_unit(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING, dep->id,
+                                        log_unit_full(dep->id,
+                                                      r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING,
                                                       "Cannot add dependency job for unit %s, ignoring: %s",
                                                       dep->id, bus_error_message(e, r));
 
@@ -992,7 +988,8 @@ 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);
                                 if (r < 0) {
-                                        log_full_unit(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING, dep->id,
+                                        log_unit_full(dep->id,
+                                                      r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_WARNING,
                                                       "Cannot add dependency job for unit %s, ignoring: %s",
                                                       dep->id, bus_error_message(e, r));
 
@@ -1015,7 +1012,7 @@ 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);
                                 if (r < 0) {
-                                        log_warning_unit(dep->id,
+                                        log_unit_warning(dep->id,
                                                          "Cannot add dependency job for unit %s, ignoring: %s",
                                                          dep->id, bus_error_message(e, r));
 
@@ -1068,7 +1065,7 @@ int transaction_add_job_and_dependencies(
                         SET_FOREACH(dep, ret->unit->dependencies[UNIT_PROPAGATES_RELOAD_TO], i) {
                                 r = transaction_add_job_and_dependencies(tr, JOB_RELOAD, dep, ret, false, override, false, false, ignore_order, e);
                                 if (r < 0) {
-                                        log_warning_unit(dep->id,
+                                        log_unit_warning(dep->id,
                                                          "Cannot add dependency reload job for unit %s, ignoring: %s",
                                                          dep->id, bus_error_message(e, r));
 
@@ -1115,7 +1112,7 @@ int transaction_add_isolate_jobs(Transaction *tr, Manager *m) {
 
                 r = transaction_add_job_and_dependencies(tr, JOB_STOP, u, tr->anchor_job, true, false, false, false, false, NULL);
                 if (r < 0)
-                        log_warning_unit(u->id,
+                        log_unit_warning(u->id,
                                          "Cannot add isolate job for unit %s, ignoring: %s",
                                          u->id, strerror(-r));
         }
@@ -1130,7 +1127,7 @@ Transaction *transaction_new(bool irreversible) {
         if (!tr)
                 return NULL;
 
-        tr->jobs = hashmap_new(trivial_hash_func, trivial_compare_func);
+        tr->jobs = hashmap_new(NULL);
         if (!tr->jobs) {
                 free(tr);
                 return NULL;