commit cd4e1305f19728ef010c20a18cd3f92cccae49d4
Author: Harald Hoyer <harald@redhat.com>
Date:   Thu Apr 18 17:23:01 2013 +0200

    Support "freeze"

diff --git a/src/login/logind-action.c b/src/login/logind-action.c
index 4091e41..c61314a 100644
--- a/src/login/logind-action.c
+++ b/src/login/logind-action.c
@@ -41,6 +41,7 @@ int manager_handle_action(
                 [HANDLE_HALT] = "Halting...",
                 [HANDLE_KEXEC] = "Rebooting via kexec...",
                 [HANDLE_SUSPEND] = "Suspending...",
+                [HANDLE_FREEZE] = "Freezing...",
                 [HANDLE_HIBERNATE] = "Hibernating...",
                 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
         };
@@ -51,6 +52,7 @@ int manager_handle_action(
                 [HANDLE_HALT] = SPECIAL_HALT_TARGET,
                 [HANDLE_KEXEC] = SPECIAL_KEXEC_TARGET,
                 [HANDLE_SUSPEND] = SPECIAL_SUSPEND_TARGET,
+                [HANDLE_FREEZE] = SPECIAL_SUSPEND_TARGET,
                 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
                 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
         };
@@ -77,6 +79,8 @@ int manager_handle_action(
                 supported = can_sleep("mem") > 0;
         else if (handle == HANDLE_HIBERNATE)
                 supported = can_sleep("disk") > 0;
+        else if (handle == HANDLE_FREEZE)
+                supported = can_sleep("freeze") > 0;
         else if (handle == HANDLE_HYBRID_SLEEP)
                 supported = can_sleep("disk") > 0 && can_sleep_disk("suspend") > 0;
         else if (handle == HANDLE_KEXEC)
@@ -141,6 +145,7 @@ static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
         [HANDLE_HALT] = "halt",
         [HANDLE_KEXEC] = "kexec",
         [HANDLE_SUSPEND] = "suspend",
+        [HANDLE_FREEZE] = "freeze",
         [HANDLE_HIBERNATE] = "hibernate",
         [HANDLE_HYBRID_SLEEP] = "hybrid-sleep",
         [HANDLE_LOCK] = "lock"
diff --git a/src/login/logind-action.h b/src/login/logind-action.h
index df080d9..010ea4e 100644
--- a/src/login/logind-action.h
+++ b/src/login/logind-action.h
@@ -32,6 +32,7 @@ typedef enum HandleAction {
         HANDLE_HIBERNATE,
         HANDLE_HYBRID_SLEEP,
         HANDLE_LOCK,
+        HANDLE_FREEZE,
         _HANDLE_ACTION_MAX,
         _HANDLE_ACTION_INVALID = -1
 } HandleAction;
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 4176902..d34f763 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -145,6 +145,9 @@
         "  <method name=\"Suspend\">\n"                                 \
         "   <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n"  \
         "  </method>\n"                                                 \
+        "  <method name=\"Freeze\">\n"                                  \
+        "   <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n"  \
+        "  </method>\n"                                                 \
         "  <method name=\"Hibernate\">\n"                               \
         "   <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n"  \
         "  </method>\n"                                                 \
@@ -160,6 +163,9 @@
         "  <method name=\"CanSuspend\">\n"                              \
         "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
         "  </method>\n"                                                 \
+        "  <method name=\"CanFreeze\">\n"                                \
+        "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
+        "  </method>\n"                                                 \
         "  <method name=\"CanHibernate\">\n"                            \
         "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
         "  </method>\n"                                                 \
@@ -2189,6 +2195,18 @@ static DBusHandlerResult manager_message_handler(
                                 &error, &reply);
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Freeze")) {
+                r = bus_manager_do_shutdown_or_sleep(
+                                m, connection, message,
+                                SPECIAL_SUSPEND_TARGET,
+                                INHIBIT_SLEEP,
+                                "org.freedesktop.login1.suspend",
+                                "org.freedesktop.login1.suspend-multiple-sessions",
+                                "org.freedesktop.login1.suspend-ignore-inhibit",
+                                "freeze", NULL,
+                                &error, &reply);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, &error, r);
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Hibernate")) {
                 r = bus_manager_do_shutdown_or_sleep(
                                 m, connection, message,
@@ -2251,6 +2269,18 @@ static DBusHandlerResult manager_message_handler(
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
 
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanFreeze")) {
+                r = bus_manager_can_shutdown_or_sleep(
+                                m, connection, message,
+                                INHIBIT_SLEEP,
+                                "org.freedesktop.login1.suspend",
+                                "org.freedesktop.login1.suspend-multiple-sessions",
+                                "org.freedesktop.login1.suspend-ignore-inhibit",
+                                "mem", NULL,
+                                &error, &reply);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, &error, r);
+
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHibernate")) {
                 r = bus_manager_can_shutdown_or_sleep(
                                 m, connection, message,
diff --git a/src/sleep/sleep.c b/src/sleep/sleep.c
index f5e78c1..398f694 100644
--- a/src/sleep/sleep.c
+++ b/src/sleep/sleep.c
@@ -47,6 +47,8 @@ int main(int argc, char *argv[]) {
 
         if (streq(argv[1], "suspend"))
                 verb = "mem";
+        else if (streq(argv[1], "freeze"))
+                verb = "freeze";
         else if (streq(argv[1], "hibernate") || streq(argv[1], "hybrid-sleep"))
                 verb = "disk";
         else {
@@ -84,6 +86,12 @@ int main(int argc, char *argv[]) {
                            "MESSAGE=Suspending system...",
                            "SLEEP=suspend",
                            NULL);
+        else if (streq(argv[1], "freeze"))
+                log_struct(LOG_INFO,
+                           MESSAGE_ID(SD_MESSAGE_SLEEP_START),
+                           "MESSAGE=Freezing system...",
+                           "SLEEP=freeze",
+                           NULL);
         else if (streq(argv[1], "hibernate"))
                 log_struct(LOG_INFO,
                            MESSAGE_ID(SD_MESSAGE_SLEEP_START),
@@ -109,6 +117,12 @@ int main(int argc, char *argv[]) {
                            "MESSAGE=System resumed.",
                            "SLEEP=suspend",
                            NULL);
+        else if (streq(argv[1], "freeze"))
+                log_struct(LOG_INFO,
+                           MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
+                           "MESSAGE=System thawed.",
+                           "SLEEP=freeze",
+                           NULL);
         else
                 log_struct(LOG_INFO,
                            MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index c2b1749..60618d0 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -103,6 +103,7 @@ static enum action {
         ACTION_KEXEC,
         ACTION_EXIT,
         ACTION_SUSPEND,
+        ACTION_FREEZE,
         ACTION_HIBERNATE,
         ACTION_HYBRID_SLEEP,
         ACTION_RUNLEVEL2,
@@ -1872,6 +1873,7 @@ static const struct {
         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
+        [ACTION_FREEZE]       = { SPECIAL_SUSPEND_TARGET,      "freeze",       "replace-irreversibly" },
         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
 };
@@ -2005,6 +2007,10 @@ static int reboot_with_logind(DBusConnection *bus, enum action a) {
                 method = "Suspend";
                 break;
 
+        case ACTION_FREEZE:
+                method = "Freeze";
+                break;
+
         case ACTION_HIBERNATE:
                 method = "Hibernate";
                 break;
@@ -2198,6 +2204,7 @@ static int start_special(DBusConnection *bus, char **args) {
             (a == ACTION_POWEROFF ||
              a == ACTION_REBOOT ||
              a == ACTION_SUSPEND ||
+             a == ACTION_FREEZE ||
              a == ACTION_HIBERNATE ||
              a == ACTION_HYBRID_SLEEP)) {
                 r = reboot_with_logind(bus, a);
@@ -4584,6 +4591,7 @@ static int systemctl_help(void) {
                "  exit                            Request user instance exit\n"
                "  switch-root [ROOT] [INIT]       Change to a different root file system\n"
                "  suspend                         Suspend the system\n"
+               "  freeze                          Freeze the system\n"
                "  hibernate                       Hibernate the system\n"
                "  hybrid-sleep                    Hibernate and suspend the system\n",
                program_invocation_short_name);
@@ -5577,6 +5585,7 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError
                 { "reboot",                EQUAL, 1, start_special     },
                 { "kexec",                 EQUAL, 1, start_special     },
                 { "suspend",               EQUAL, 1, start_special     },
+                { "freeze",                EQUAL, 1, start_special     },
                 { "hibernate",             EQUAL, 1, start_special     },
                 { "hybrid-sleep",          EQUAL, 1, start_special     },
                 { "default",               EQUAL, 1, start_special     },
diff --git a/src/test/test-sleep.c b/src/test/test-sleep.c
index 5a98ecd..34faea9 100644
--- a/src/test/test-sleep.c
+++ b/src/test/test-sleep.c
@@ -29,6 +29,7 @@
 
 int main(int argc, char* argv[]) {
         log_info("Can Suspend: %s", yes_no(can_sleep("mem") > 0));
+        log_info("Can Freeze: %s", yes_no(can_sleep("freeze") > 0));
         log_info("Can Hibernate: %s", yes_no(can_sleep("disk") > 0));
         log_info("Can Hibernate+Suspend (Hybrid-Sleep): %s", yes_no(can_sleep_disk("suspend") > 0));
         log_info("Can Hibernate+Reboot: %s", yes_no(can_sleep_disk("reboot") > 0));