treewide: yet more log_*_errno + return simplifications

Using:
find . -name '*.[ch]' | while read f; do perl -i.mmm -e \
 'local $/;
  local $_=<>;
  s/(if\s*\([^\n]+\))\s*{\n(\s*)(log_[a-z_]*_errno\(\s*([->a-zA-Z_]+)\s*,[^;]+);\s*return\s+\g4;\s+}/\1\n\2return \3;/msg;
  print;'
 $f
done

And a couple of manual whitespace fixups.

4 files changed, 60 insertions, 120 deletions

diff --git a/src/login/loginctl.c b/src/login/loginctl.c
index 80e03ebbec..6505eb89c1 100644
--- a/src/login/loginctl.c
+++ b/src/login/loginctl.c
@@ -384,10 +384,8 @@ static int print_session_status_info(sd_bus *bus, const char *path, bool *new_li
         int r;
 
         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
-        if (r < 0) {
-                log_error_errno(r, "Could not get properties: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Could not get properties: %m");
 
         if (*new_line)
                 printf("\n");
@@ -699,10 +697,8 @@ static int show_user(sd_bus *bus, char **args, unsigned n) {
                 uid_t uid;
 
                 r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to look up user %s: %m", args[i]);
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to look up user %s: %m", args[i]);
 
                 r = sd_bus_call_method(
                                 bus,
@@ -859,10 +855,8 @@ static int enable_linger(sd_bus *bus, char **args, unsigned n) {
                 uid_t uid;
 
                 r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to look up user %s: %m", args[i]);
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to look up user %s: %m", args[i]);
 
                 r = sd_bus_call_method (
                         bus,
@@ -892,10 +886,8 @@ static int terminate_user(sd_bus *bus, char **args, unsigned n) {
                 uid_t uid;
 
                 r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to look up user %s: %m", args[i]);
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to look up user %s: %m", args[i]);
 
                 r = sd_bus_call_method (
                         bus,
@@ -928,10 +920,8 @@ static int kill_user(sd_bus *bus, char **args, unsigned n) {
                 uid_t uid;
 
                 r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to look up user %s: %m", args[i]);
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to look up user %s: %m", args[i]);
 
                 r = sd_bus_call_method (
                         bus,
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index 20161ede9d..5b30457a88 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -337,10 +337,8 @@ int session_load(Session *s) {
                            "CONTROLLER",     &controller,
                            NULL);
 
-        if (r < 0) {
-                log_error_errno(r, "Failed to read %s: %m", s->state_file);
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to read %s: %m", s->state_file);
 
         if (!s->user) {
                 uid_t u;
diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index d2a4f7e9cb..f865afdb53 100644
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -310,10 +310,8 @@ static int user_mkdir_runtime_path(User *u) {
         assert(u);
 
         r = mkdir_safe_label("/run/user", 0755, 0, 0);
-        if (r < 0) {
-                log_error_errno(r, "Failed to create /run/user: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to create /run/user: %m");
 
         if (!u->runtime_path) {
                 if (asprintf(&p, "/run/user/" UID_FMT, u->uid) < 0)
diff --git a/src/login/logind.c b/src/login/logind.c
index d7fb1bf170..78220ff4dd 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -583,52 +583,36 @@ static int manager_connect_bus(Manager *m) {
         assert(!m->bus);
 
         r = sd_bus_default_system(&m->bus);
-        if (r < 0) {
-                log_error_errno(r, "Failed to connect to system bus: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to connect to system bus: %m");
 
         r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", manager_vtable, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add manager object vtable: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add manager object vtable: %m");
 
         r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/seat", "org.freedesktop.login1.Seat", seat_vtable, seat_object_find, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add seat object vtable: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add seat object vtable: %m");
 
         r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/seat", seat_node_enumerator, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add seat enumerator: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add seat enumerator: %m");
 
         r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/session", "org.freedesktop.login1.Session", session_vtable, session_object_find, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add session object vtable: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add session object vtable: %m");
 
         r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/session", session_node_enumerator, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add session enumerator: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add session enumerator: %m");
 
         r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/login1/user", "org.freedesktop.login1.User", user_vtable, user_object_find, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add user object vtable: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add user object vtable: %m");
 
         r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/login1/user", user_node_enumerator, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add user enumerator: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add user enumerator: %m");
 
         r = sd_bus_add_match(m->bus,
                              NULL,
@@ -638,10 +622,8 @@ static int manager_connect_bus(Manager *m) {
                              "member='NameOwnerChanged',"
                              "path='/org/freedesktop/DBus'",
                              match_name_owner_changed, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add match for NameOwnerChanged: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add match for NameOwnerChanged: %m");
 
         r = sd_bus_add_match(m->bus,
                              NULL,
@@ -651,10 +633,8 @@ static int manager_connect_bus(Manager *m) {
                              "member='JobRemoved',"
                              "path='/org/freedesktop/systemd1'",
                              match_job_removed, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add match for JobRemoved: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add match for JobRemoved: %m");
 
         r = sd_bus_add_match(m->bus,
                              NULL,
@@ -664,10 +644,8 @@ static int manager_connect_bus(Manager *m) {
                              "member='UnitRemoved',"
                              "path='/org/freedesktop/systemd1'",
                              match_unit_removed, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add match for UnitRemoved: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
 
         r = sd_bus_add_match(m->bus,
                              NULL,
@@ -676,10 +654,8 @@ static int manager_connect_bus(Manager *m) {
                              "interface='org.freedesktop.DBus.Properties',"
                              "member='PropertiesChanged'",
                              match_properties_changed, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
 
         r = sd_bus_add_match(m->bus,
                              NULL,
@@ -689,10 +665,8 @@ static int manager_connect_bus(Manager *m) {
                              "member='Reloading',"
                              "path='/org/freedesktop/systemd1'",
                              match_reloading, m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add match for Reloading: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add match for Reloading: %m");
 
         r = sd_bus_call_method(
                         m->bus,
@@ -708,16 +682,12 @@ static int manager_connect_bus(Manager *m) {
         }
 
         r = sd_bus_request_name(m->bus, "org.freedesktop.login1", 0);
-        if (r < 0) {
-                log_error_errno(r, "Failed to register name: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to register name: %m");
 
         r = sd_bus_attach_event(m->bus, m->event, 0);
-        if (r < 0) {
-                log_error_errno(r, "Failed to attach bus to event loop: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to attach bus to event loop: %m");
 
         return 0;
 }
@@ -806,16 +776,12 @@ static int manager_connect_console(Manager *m) {
         }
 
         r = ignore_signals(SIGRTMIN + 1, -1);
-        if (r < 0) {
-                log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Cannot ignore SIGRTMIN + 1: %m");
 
         r = sigprocmask_many(SIG_BLOCK, SIGRTMIN, -1);
-        if (r < 0) {
-                log_error_errno(r, "Cannot block SIGRTMIN: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Cannot block SIGRTMIN: %m");
 
         r = sd_event_add_signal(m->event, NULL, SIGRTMIN, manager_vt_switch, m);
         if (r < 0)
@@ -1016,28 +982,20 @@ static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *us
                                 CLOCK_MONOTONIC,
                                 elapse, USEC_PER_SEC*30,
                                 manager_dispatch_idle_action, m);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to add idle event source: %m");
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to add idle event source: %m");
 
                 r = sd_event_source_set_priority(m->idle_action_event_source, SD_EVENT_PRIORITY_IDLE+10);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to set idle event source priority: %m");
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to set idle event source priority: %m");
         } else {
                 r = sd_event_source_set_time(m->idle_action_event_source, elapse);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to set idle event timer: %m");
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to set idle event timer: %m");
 
                 r = sd_event_source_set_enabled(m->idle_action_event_source, SD_EVENT_ONESHOT);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to enable idle event timer: %m");
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to enable idle event timer: %m");
         }
 
         return 0;
@@ -1061,10 +1019,8 @@ int manager_startup(Manager *m) {
 
         /* Connect to udev */
         r = manager_connect_udev(m);
-        if (r < 0) {
-                log_error_errno(r, "Failed to create udev watchers: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to create udev watchers: %m");
 
         /* Connect to the bus */
         r = manager_connect_bus(m);
@@ -1073,10 +1029,8 @@ int manager_startup(Manager *m) {
 
         /* Instantiate magic seat 0 */
         r = manager_add_seat(m, "seat0", &m->seat0);
-        if (r < 0) {
-                log_error_errno(r, "Failed to add seat0: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to add seat0: %m");
 
         r = manager_set_lid_switch_ignore(m, 0 + IGNORE_LID_SWITCH_STARTUP_USEC);
         if (r < 0)