valeriyvdovin / rpms / systemd

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From 1a3dd33f98312421e0f3d654e8f5d56554557a8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Fri, 3 Oct 2014 21:34:14 -0400
Subject: [PATCH] Revert "timedated: manage systemd-timesyncd directly instead
 of lists of alternatives"

This reverts commit b72ddf0f4f552dd53d6404b6ddbc9f17d02b8e12.

Conflicts:
	Makefile.am
	NEWS
	src/timedate/timedated.c
---
 Makefile.am              |   9 ++
 src/timedate/timedated.c | 252 +++++++++++++++++++++++++--------------
 2 files changed, 170 insertions(+), 91 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 9e64d6f988..bf65b24060 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -111,6 +111,7 @@ catalogdir=$(prefix)/lib/systemd/catalog
 kernelinstalldir = $(prefix)/lib/kernel/install.d
 factory_etcdir = $(prefix)/share/factory/etc
 factory_pamdir = $(prefix)/share/factory/etc/pam.d
+ntpunitsdir=$(prefix)/lib/systemd/ntp-units.d
 
 # And these are the special ones for /
 rootprefix=@rootprefix@
@@ -5101,6 +5102,10 @@ dist_systemunit_DATA_busnames += \
 polkitpolicy_files += \
 	src/timedate/org.freedesktop.timedate1.policy
 
+INSTALL_DIRS += \
+	$(prefix)/lib/systemd/ntp-units.d \
+	$(sysconfdir)/systemd/ntp-units.d
+
 SYSTEM_UNIT_ALIASES += \
 	systemd-timedated.service dbus-org.freedesktop.timedate1.service
 
@@ -5177,6 +5182,10 @@ EXTRA_DIST += \
 
 CLEANFILES += \
 	src/timesync/timesyncd.conf
+
+dist_ntpunits_DATA = \
+	src/timesync/90-systemd.list
+
 endif
 
 # ------------------------------------------------------------------------------
diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c
index 753c3d1d65..66097ef741 100644
--- a/src/timedate/timedated.c
+++ b/src/timedate/timedated.c
@@ -186,141 +186,211 @@ static int context_write_data_local_rtc(Context *c) {
         return write_string_file_atomic_label("/etc/adjtime", w);
 }
 
+static char** get_ntp_services(void) {
+        _cleanup_strv_free_ char **r = NULL, **files = NULL;
+        char **i;
+        int k;
+
+        k = conf_files_list(&files, ".list", NULL,
+                            "/etc/systemd/ntp-units.d",
+                            "/run/systemd/ntp-units.d",
+                            "/usr/local/lib/systemd/ntp-units.d",
+                            "/usr/lib/systemd/ntp-units.d",
+                            NULL);
+        if (k < 0)
+                return NULL;
+
+        STRV_FOREACH(i, files) {
+                _cleanup_fclose_ FILE *f;
+
+                f = fopen(*i, "re");
+                if (!f)
+                        continue;
+
+                for (;;) {
+                        char line[PATH_MAX], *l;
+
+                        if (!fgets(line, sizeof(line), f)) {
+                                if (ferror(f))
+                                        log_error("Failed to read NTP unit file: %m");
+
+                                break;
+                        }
+
+                        l = strstrip(line);
+                        if (l[0] == 0 || l[0] == '#')
+                                continue;
+
+                        if (strv_extend(&r, l) < 0) {
+                                log_oom();
+                                return NULL;
+                        }
+                }
+        }
+
+        i = r;
+        r = NULL; /* avoid cleanup */
+
+        return strv_uniq(i);
+}
+
 static int context_read_ntp(Context *c, sd_bus *bus) {
-        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-        sd_bus_message *reply = NULL;
-        const char *s;
+        _cleanup_strv_free_ char **l;
+        char **i;
         int r;
 
         assert(c);
         assert(bus);
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "GetUnitFileState",
-                        &error,
-                        &reply,
-                        "s",
-                        "systemd-timesyncd.service");
+        l = get_ntp_services();
+        STRV_FOREACH(i, l) {
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                sd_bus_message *reply = NULL;
+                const char *s;
 
-        if (r < 0) {
-                if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND) ||
-                    sd_bus_error_has_name(&error, "org.freedesktop.systemd1.LoadFailed") ||
-                    sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit"))
-                        return 0;
+                r = sd_bus_call_method(
+                                bus,
+                                "org.freedesktop.systemd1",
+                                "/org/freedesktop/systemd1",
+                                "org.freedesktop.systemd1.Manager",
+                                "GetUnitFileState",
+                                &error,
+                                &reply,
+                                "s",
+                                *i);
 
-                return r;
-        }
+                if (r < 0) {
+                        /* This implementation does not exist. Try the next one. */
+                        if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND))
+                                continue;
 
-        r = sd_bus_message_read(reply, "s", &s);
-        if (r < 0)
-                return r;
+                        return r;
+                }
+
+                r = sd_bus_message_read(reply, "s", &s);
+                if (r < 0)
+                        return r;
 
-        c->can_ntp = true;
-        c->use_ntp = STR_IN_SET(s, "enabled", "enabled-runtime");
+                c->can_ntp = true;
+                c->use_ntp = STR_IN_SET(s, "enabled", "enabled-runtime");
+
+                return 0;
+        }
 
         return 0;
 }
 
 static int context_start_ntp(Context *c, sd_bus *bus, sd_bus_error *error) {
+        _cleanup_strv_free_ char **l = NULL;
+        char **i;
         int r;
 
         assert(c);
         assert(bus);
         assert(error);
 
-        if (c->use_ntp)
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.systemd1",
-                                "/org/freedesktop/systemd1",
-                                "org.freedesktop.systemd1.Manager",
-                                "StartUnit",
-                                error,
-                                NULL,
-                                "ss",
-                                "systemd-timesyncd.service",
-                                "replace");
-        else
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.systemd1",
-                                "/org/freedesktop/systemd1",
-                                "org.freedesktop.systemd1.Manager",
-                                "StopUnit",
-                                error,
-                                NULL,
-                                "ss",
-                                "systemd-timesyncd.service",
-                                "replace");
+        l = get_ntp_services();
+        STRV_FOREACH(i, l) {
+
+                if (c->use_ntp)
+                        r = sd_bus_call_method(
+                                        bus,
+                                        "org.freedesktop.systemd1",
+                                        "/org/freedesktop/systemd1",
+                                        "org.freedesktop.systemd1.Manager",
+                                        "StartUnit",
+                                        error,
+                                        NULL,
+                                        "ss", *i, "replace");
+                else
+                        r = sd_bus_call_method(
+                                        bus,
+                                        "org.freedesktop.systemd1",
+                                        "/org/freedesktop/systemd1",
+                                        "org.freedesktop.systemd1.Manager",
+                                        "StopUnit",
+                                        error,
+                                        NULL,
+                                        "ss", *i, "replace");
+
+                if (r < 0) {
+                        if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) ||
+                            sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") ||
+                            sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit")) {
+                                /* This implementation does not exist. Try the next one. */
+                                sd_bus_error_free(error);
+                                continue;
+                        }
 
-        if (r < 0) {
-                if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) ||
-                    sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") ||
-                    sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit"))
-                        return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+                        return r;
+                }
 
-                return r;
+                return 1;
         }
 
-        return 0;
+        sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+        return -ENOTSUP;
 }
 
 static int context_enable_ntp(Context*c, sd_bus *bus, sd_bus_error *error) {
+        _cleanup_strv_free_ char **l = NULL;
+        char **i;
         int r;
 
         assert(c);
         assert(bus);
         assert(error);
 
-        if (c->use_ntp)
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.systemd1",
-                                "/org/freedesktop/systemd1",
-                                "org.freedesktop.systemd1.Manager",
-                                "EnableUnitFiles",
-                                error,
-                                NULL,
-                                "asbb", 1,
-                                "systemd-timesyncd.service",
-                                false, true);
-        else
+        l = get_ntp_services();
+        STRV_FOREACH(i, l) {
+                if (c->use_ntp)
+                        r = sd_bus_call_method(
+                                        bus,
+                                        "org.freedesktop.systemd1",
+                                        "/org/freedesktop/systemd1",
+                                        "org.freedesktop.systemd1.Manager",
+                                        "EnableUnitFiles",
+                                        error,
+                                        NULL,
+                                        "asbb", 1, *i, false, true);
+                else
+                        r = sd_bus_call_method(
+                                        bus,
+                                        "org.freedesktop.systemd1",
+                                        "/org/freedesktop/systemd1",
+                                        "org.freedesktop.systemd1.Manager",
+                                        "DisableUnitFiles",
+                                        error,
+                                        NULL,
+                                        "asb", 1, *i, false);
+
+                if (r < 0) {
+                        if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND)) {
+                                /* This implementation does not exist. Try the next one. */
+                                sd_bus_error_free(error);
+                                continue;
+                        }
+
+                        return r;
+                }
+
                 r = sd_bus_call_method(
                                 bus,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "DisableUnitFiles",
+                                "Reload",
                                 error,
                                 NULL,
-                                "asb", 1,
-                                "systemd-timesyncd.service",
-                                false);
-
-        if (r < 0) {
-                if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND))
-                        return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+                                NULL);
+                if (r < 0)
+                        return r;
 
-                return r;
+                return 1;
         }
 
-        r = sd_bus_call_method(
-                        bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "Reload",
-                        error,
-                        NULL,
-                        NULL);
-        if (r < 0)
-                return r;
-
-        return 0;
+        sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+        return -ENOTSUP;
 }
 
 static int property_get_rtc_time(