include missing_fcntl.h where needed

f5947a5e92 dropped missing.h and
replaced with the more specific headers but did not add
missing_fcntl.h in places that use O_TMPFILE. This is needed for
some older versions of glibc.

NEWS

@@ -33,10 +33,9 @@ CHANGES WITH 244 in spe:
           during early boot, so in practice this change has very little
           effect.)
 
-        * The special -.service.d dropin directory may be used to add
-          configuration that affects all services. The "-.service" service name
-          is now disallowed (though hopefully no one would use such a service
-          name. -.mount gives us enough grief.)
+        * Unit files now support top level dropin directories of the form
+          <unit_type>.d/ (e.g. service.d/) that may be used to add configuration
+          that affects all corresponding unit files.
 
         * The RuntimeMaxSec= setting is now supported by scopes, not just
           .service units. This is particularly useful for PAM sessions which

TODO

@@ -491,8 +491,6 @@ Features:
 
 * cache sd_event_now() result from before the first iteration...
 
-* add systemctl stop --job-mode=triggering that follows TRIGGERED_BY deps and adds them to the same transaction
-
 * PID1: find a way how we can reload unit file configuration for
   specific units only, without reloading the whole of systemd
 

man/systemctl.xml

@@ -1601,8 +1601,9 @@ Jan 12 10:46:45 example.com bluetoothd[8900]: gatt-time-server: Input/output err
         <literal>replace-irreversibly</literal>,
         <literal>isolate</literal>,
         <literal>ignore-dependencies</literal>,
-        <literal>ignore-requirements</literal> or
-        <literal>flush</literal>. Defaults to
+        <literal>ignore-requirements</literal>,
+        <literal>flush</literal>, or
+        <literal>triggering</literal>. Defaults to
         <literal>replace</literal>, except when the
         <command>isolate</command> command is used which implies the
         <literal>isolate</literal> job mode.</para>
@@ -1647,6 +1648,13 @@ Jan 12 10:46:45 example.com bluetoothd[8900]: gatt-time-server: Input/output err
         dependencies will still be honored.</para>
         </listitem>
 
+        <para><literal>triggering</literal> may only be used with
+        <command>systemctl stop</command>. In this mode, the specified
+        unit and any active units that trigger it are stopped. See the
+        discussion of
+        <varname>Triggers=</varname> in <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+        for more information about triggering units.</para>
+
       </varlistentry>
 
       <varlistentry>

man/systemd.service.xml

@@ -63,19 +63,6 @@
     <para>The <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
     command allows creating <filename>.service</filename> and <filename>.scope</filename> units dynamically
     and transiently from the command line.</para>
-
-    <para>In addition to the various drop-in behaviors described in
-    <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
-    services also support a top-level drop-in with <filename>-.service.d/</filename> that allows
-    altering or adding to the settings of all services on the system.
-    The formatting and precedence of applying drop-in configurations follow what is defined in
-    <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
-    However, configurations in <filename>-.service.d/</filename> have the lowest precedence compared to settings
-    in the service specific override directories. For example, for <filename>foo-bar-baz.service</filename>,
-    drop-ins in <filename>foo-bar-baz.service.d/</filename> override the ones in
-    <filename>foo-bar-.service.d/</filename>, which override the ones <filename>foo-.service.d/</filename>,
-    which override the ones in <filename>-.service.d/</filename>.
-    </para>
   </refsect1>
 
   <refsect1>

man/systemd.special.xml

@@ -119,15 +119,6 @@
           </listitem>
         </varlistentry>
 
-        <varlistentry>
-          <term><filename>-.service</filename></term>
-          <listitem>
-            <para>This is a reserved unit name used to support top-level drop-ins for services. See
-            <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details.</para>
-          </listitem>
-        </varlistentry>
-
         <varlistentry>
           <term><filename>basic.target</filename></term>
           <listitem>

man/systemd.unit.xml

@@ -192,9 +192,14 @@
     over unit files wherever located. Multiple drop-in files with different names are applied in
     lexicographic order, regardless of which of the directories they reside in.</para>
 
-    <para>Service units also support a top-level drop-in directory for modifying the settings of all service units. See
-    <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-    for details.</para>
+    <para>Units also support a top-level drop-in with <filename><replaceable>type</replaceable>.d/</filename>,
+    where <replaceable>type</replaceable> may be e.g. <literal>service</literal> or <literal>socket</literal>,
+    that allows altering or adding to the settings of all corresponding unit files on the system.
+    The formatting and precedence of applying drop-in configurations follow what is defined above.
+    Configurations in <filename><replaceable>type</replaceable>.d/</filename> have the lowest precedence
+    compared to settings in the name specific override directories. So the contents of
+    <filename>foo-.service.d/10-override.conf</filename> would override
+    <filename>service.d/10-override.conf</filename>.</para>
 
     <!-- Note that we do not document .include here, as we consider it mostly obsolete, and want
          people to use .d/ drop-ins instead. -->

src/basic/fd-util.c

@@ -15,6 +15,7 @@
 #include "io-util.h"
 #include "macro.h"
 #include "memfd-util.h"
+#include "missing_fcntl.h"
 #include "missing_syscall.h"
 #include "parse-util.h"
 #include "path-util.h"

src/basic/fs-util.c

@@ -14,6 +14,7 @@
 #include "locale-util.h"
 #include "log.h"
 #include "macro.h"
+#include "missing_fcntl.h"
 #include "missing_fs.h"
 #include "missing_syscall.h"
 #include "mkdir.h"

src/basic/special.h

@@ -105,7 +105,3 @@
 
 /* The root directory. */
 #define SPECIAL_ROOT_MOUNT "-.mount"
-
-/* Used to apply settings to all services through drop-ins.
- * Should not exist as an actual service. */
-#define SPECIAL_ROOT_SERVICE "-.service"

src/basic/unit-name.c

@@ -669,36 +669,6 @@ good:
         return 0;
 }
 
-bool service_unit_name_is_valid(const char *name) {
-        _cleanup_free_ char *prefix = NULL, *s = NULL;
-        const char *e, *service_name = name;
-
-        if (!unit_name_is_valid(name, UNIT_NAME_ANY))
-                return false;
-
-        e = endswith(name, ".service");
-        if (!e)
-                return false;
-
-        /* If it's a template or instance, get the prefix as a service name. */
-        if (unit_name_is_valid(name, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) {
-                if (unit_name_to_prefix(name, &prefix) < 0)
-                        return false;
-
-                s = strjoin(prefix, ".service");
-                if (!s)
-                        return false;
-
-                service_name = s;
-        }
-
-        /* Reject reserved service name(s). */
-        if (streq(service_name, SPECIAL_ROOT_SERVICE))
-                return false;
-
-        return true;
-}
-
 int slice_build_parent_slice(const char *slice, char **ret) {
         char *s, *dash;
         int r;

src/basic/unit-name.h

@@ -58,8 +58,6 @@ static inline int unit_name_mangle(const char *name, UnitNameMangle flags, char
         return unit_name_mangle_with_suffix(name, NULL, flags, ".service", ret);
 }
 
-bool service_unit_name_is_valid(const char *name);
-
 int slice_build_parent_slice(const char *slice, char **ret);
 int slice_build_subslice(const char *slice, const char *name, char **subslice);
 bool slice_name_is_valid(const char *name);

src/core/job.c

@@ -1610,6 +1610,7 @@ static const char* const job_mode_table[_JOB_MODE_MAX] = {
         [JOB_FLUSH] = "flush",
         [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies",
         [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements",
+        [JOB_TRIGGERING] = "triggering",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);

src/core/job.h

@@ -75,6 +75,7 @@ enum JobMode {
         JOB_FLUSH,               /* Flush out all other queued jobs when queueing this one */
         JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */
         JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */
+        JOB_TRIGGERING,          /* Adds TRIGGERED_BY dependencies to the same transaction */
         _JOB_MODE_MAX,
         _JOB_MODE_INVALID = -1
 };

src/core/manager.c

@@ -1738,6 +1738,9 @@ int manager_add_job(
         if (mode == JOB_ISOLATE && !unit->allow_isolate)
                 return sd_bus_error_setf(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
 
+        if (mode == JOB_TRIGGERING && type != JOB_STOP)
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop.");
+
         log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
 
         type = job_type_collapse(type, unit);
@@ -1758,6 +1761,12 @@ int manager_add_job(
                         goto tr_abort;
         }
 
+        if (mode == JOB_TRIGGERING) {
+                r = transaction_add_triggering_jobs(tr, unit);
+                if (r < 0)
+                        goto tr_abort;
+        }
+
         r = transaction_activate(tr, m, mode, affected_jobs, error);
         if (r < 0)
                 goto tr_abort;

src/core/service.c

@@ -549,11 +549,6 @@ static int service_verify(Service *s) {
         assert(s);
         assert(UNIT(s)->load_state == UNIT_LOADED);
 
-        if (!service_unit_name_is_valid(UNIT(s)->id)) {
-                log_unit_error(UNIT(s), "Service name is invalid or reserved. Refusing.");
-                return -EINVAL;
-        }
-
         if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]
             && UNIT(s)->success_action == EMERGENCY_ACTION_NONE) {
                 /* FailureAction= only makes sense if one of the start or stop commands is specified.

src/core/transaction.c

@@ -1141,6 +1141,32 @@ int transaction_add_isolate_jobs(Transaction *tr, Manager *m) {
         return 0;
 }
 
+int transaction_add_triggering_jobs(Transaction *tr, Unit *u) {
+        Iterator i;
+        void *v;
+        Unit *trigger;
+        int r;
+
+        assert(tr);
+        assert(u);
+
+        HASHMAP_FOREACH_KEY(v, trigger, u->dependencies[UNIT_TRIGGERED_BY], i) {
+                /* No need to stop inactive jobs */
+                if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(trigger)) && !trigger->job)
+                        continue;
+
+                /* Is there already something listed for this? */
+                if (hashmap_get(tr->jobs, trigger))
+                        continue;
+
+                r = transaction_add_job_and_dependencies(tr, JOB_STOP, trigger, tr->anchor_job, true, false, false, false, NULL);
+                if (r < 0)
+                        log_unit_warning_errno(u, r, "Cannot add triggered by job, ignoring: %m");
+        }
+
+        return 0;
+}
+
 Transaction *transaction_new(bool irreversible) {
         Transaction *tr;
 

src/core/transaction.h

@@ -31,4 +31,5 @@ int transaction_add_job_and_dependencies(
                 sd_bus_error *e);
 int transaction_activate(Transaction *tr, Manager *m, JobMode mode, Set *affected, sd_bus_error *e);
 int transaction_add_isolate_jobs(Transaction *tr, Manager *m);
+int transaction_add_triggering_jobs(Transaction *tr, Unit *u);
 void transaction_abort(Transaction *tr);

src/import/export-raw.c

@@ -17,6 +17,7 @@
 #include "fd-util.h"
 #include "fs-util.h"
 #include "import-common.h"
+#include "missing_fcntl.h"
 #include "ratelimit.h"
 #include "stat-util.h"
 #include "string-util.h"

src/shared/dropin.c

@@ -19,7 +19,6 @@
 #include "mkdir.h"
 #include "path-util.h"
 #include "set.h"
-#include "special.h"
 #include "string-util.h"
 #include "strv.h"
 #include "unit-name.h"
@@ -164,6 +163,10 @@ static int unit_file_find_dirs(
                         return r;
         }
 
+        /* Return early for top level drop-ins. */
+        if (unit_type_from_string(name) >= 0)
+                return 0;
+
         /* Let's see if there's a "-" prefix for this unit name. If so, let's invoke ourselves for it. This will then
          * recursively do the same for all our prefixes. i.e. this means given "foo-bar-waldo.service" we'll also
          * search "foo-bar-.service" and "foo-.service".
@@ -244,16 +247,15 @@ int unit_file_find_dropin_paths(
                                                name);
         }
 
-        /* Special drop in for -.service. Add this first as it's the most generic
+        /* Special top level drop in for "<unit type>.<suffix>". Add this first as it's the most generic
          * and should be able to be overridden by more specific drop-ins. */
-        if (type == UNIT_SERVICE)
-                STRV_FOREACH(p, lookup_path)
-                        (void) unit_file_find_dirs(original_root,
-                                                   unit_path_cache,
-                                                   *p,
-                                                   SPECIAL_ROOT_SERVICE,
-                                                   dir_suffix,
-                                                   &dirs);
+        STRV_FOREACH(p, lookup_path)
+                (void) unit_file_find_dirs(original_root,
+                                           unit_path_cache,
+                                           *p,
+                                           unit_type_to_string(type),
+                                           dir_suffix,
+                                           &dirs);
 
         SET_FOREACH(name, names, i)
                 STRV_FOREACH(p, lookup_path)

src/test/test-unit-name.c

@@ -353,24 +353,6 @@ static void test_unit_name_build(void) {
         free(t);
 }
 
-static void test_service_unit_name_is_valid(void) {
-        assert_se(service_unit_name_is_valid("foo.service"));
-        assert_se(service_unit_name_is_valid("foo@bar.service"));
-        assert_se(service_unit_name_is_valid("foo@bar@bar.service"));
-        assert_se(service_unit_name_is_valid("--.service"));
-        assert_se(service_unit_name_is_valid(".-.service"));
-        assert_se(service_unit_name_is_valid("-foo-bar.service"));
-        assert_se(service_unit_name_is_valid("-foo-bar-.service"));
-        assert_se(service_unit_name_is_valid("foo-bar-.service"));
-
-        assert_se(!service_unit_name_is_valid("-.service"));
-        assert_se(!service_unit_name_is_valid(""));
-        assert_se(!service_unit_name_is_valid("foo.slice"));
-        assert_se(!service_unit_name_is_valid("@.service"));
-        assert_se(!service_unit_name_is_valid("@bar.service"));
-        assert_se(!service_unit_name_is_valid("-@.service"));
-}
-
 static void test_slice_name_is_valid(void) {
         assert_se( slice_name_is_valid(SPECIAL_ROOT_SLICE));
         assert_se( slice_name_is_valid("foo.slice"));
@@ -856,7 +838,6 @@ int main(int argc, char* argv[]) {
         test_unit_prefix_is_valid();
         test_unit_name_change_suffix();
         test_unit_name_build();
-        test_service_unit_name_is_valid();
         test_slice_name_is_valid();
         test_build_subslice();
         test_build_parent_slice();

test/TEST-15-DROPIN/test-dropin.sh

@@ -101,18 +101,18 @@ test_basic_dropins () {
     check_ok b Wants c.service
     systemctl stop a c
 
-    echo "*** test -.service.d/ top level drop-in"
+    echo "*** test service.d/ top level drop-in"
     create_services a b
     check_ko a ExecCondition "/bin/echo a"
     check_ko b ExecCondition "/bin/echo b"
-    mkdir -p /usr/lib/systemd/system/-.service.d
-    cat >/usr/lib/systemd/system/-.service.d/override.conf <<EOF
+    mkdir -p /usr/lib/systemd/system/service.d
+    cat >/usr/lib/systemd/system/service.d/override.conf <<EOF
 [Service]
 ExecCondition=/bin/echo %n
 EOF
     check_ok a ExecCondition "/bin/echo a"
     check_ok b ExecCondition "/bin/echo b"
-    rm -rf /usr/lib/systemd/system/-.service.d
+    rm -rf /usr/lib/systemd/system/service.d
 
     clear_services a b c
 }