Add default implementation of reboot to recovery action

For now it just adds some dummy parameter which has to be
substituted with real parameter name.

Change-Id: Id85abecc785234bac3e916d6139b224ca49e6def
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>

diff --git a/Makefile.am b/Makefile.am
index 8b609eab5769e330cccba63ab3346d6887e7d63a..4906b4fec4c997e497fa4708aba4bb49225d509b 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -40,6 +40,7 @@ faultd_SOURCES = \
     src/action/service_recover.c \
     src/action/service_restart.c \
     src/action/system_reboot.c \
+    src/action/system_reboot_to_recovery.c \
     src/core/event.c \
     src/core/event_processor.c \
     src/core/service.c \

diff --git a/src/action/system_reboot_to_recovery.c b/src/action/system_reboot_to_recovery.c
new file mode 100644 (file)
index 0000000..ef87c14
--- /dev/null
+++ b/src/action/system_reboot_to_recovery.c
@@ -0,0 +1,81 @@
+/*
+ * faultd
+ *
+ * Copyright © 2017 Samsung Electronics
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+
+#include "action.h"
+#include "action_executor.h"
+#include "decision_made_event.h"
+#include "log.h"
+#include "systemd_dbus.h"
+
+#define REBOOT_PARAM_PATH      "/run/systemd/reboot-param"
+#define REBOOT_PARAM "recovery\n"
+
+static int reboot_system_to_recovery(struct faultd_action *action)
+{
+       struct faultd_event *ev = nqueue_pop(&action->execution_queue,
+                                                                                struct faultd_event, nq_node);
+       mode_t prev_umask;
+       FILE *rp_file;
+       size_t n_wrte;
+       int ret;
+
+       prev_umask = umask(0022);
+
+       rp_file = fopen(REBOOT_PARAM_PATH, "w");
+       if (!rp_file) {
+               log_error("Unable to open param file");
+               goto reboot;
+       }
+
+       n_wrte = fwrite(REBOOT_PARAM, sizeof(REBOOT_PARAM), 1, rp_file);
+       fclose(rp_file);
+       umask(prev_umask);
+
+       if (n_wrte < 1)
+               log_error("Unable to set reboot param");
+
+reboot:
+       /*
+        * We reboot the system without using logind because this action may be
+        * executed when for example dbus daemon is dead
+        */
+       ret = faultd_dbus_call_systemd_simple(SYSTEMD_OBJ,
+                                                                                 SYSTEMD_MANAGER_INTERFACE,
+                                                                                 "StartUnit",
+                                                                                 "ss",
+                                                                                 "reboot.target",
+                                                                                 "replace-irreversibly");
+       if (ret < 0)
+               log_error_errno(ret, "Failed to reboot the system to the recovery");
+
+       faultd_event_unref(ev);
+       return 0;
+}
+
+static struct faultd_action system_reboot_to_recovery_action = {
+       .action_id = FAULTD_ACTION_RECOVERY_REBOOT_ID,
+       .impl_name = FAULTD_DEFAULT_ACTION_IMPL,
+       .execute = reboot_system_to_recovery,
+       .node = LIST_HEAD_INIT(system_reboot_to_recovery_action.node),
+};
+
+FAULTD_ACTION_REGISTER_SIMPLE(system_reboot_to_recovery_action);