Support watchdog timer

New APIs and commands are added for supporting watchdog timer.

Adds:
 - aul_watchdog_enable()
 - aul_watchdog_disable()
 - aul_watchdog_kick()

Requires:
 - https://review.tizen.org/gerrit/#/c/185276/ [aul-1]
 - https://review.tizen.org/gerrit/#/c/185882/ [app-core]
 - https://review.tizen.org/gerrit/#/c/185884/ [amd]
 - https://review.tizen.org/gerrit/#/c/186247/ [app-common]

Change-Id: I52c61b8bccc9070603900878a5044c0ab6325829
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>

6 files changed, 178 insertions, 1 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 65b07db4..5dc9810e 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,6 +64,7 @@ INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/include/aul_job_scheduler.h DESTINATIO
 INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/include/aul_rpc_port.h DESTINATION include/aul)
 INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/include/aul_complication.h DESTINATION include/aul)
 INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/include/aul_debug_info.h DESTINATION include/aul)
+INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/include/aul_watchdog.h DESTINATION include/aul)
 INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/aul.pc DESTINATION ${LIB_INSTALL_DIR}/pkgconfig)
 INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/feature/preexec_list.txt DESTINATION ${SHARE_INSTALL_PREFIX}/aul )
 INSTALL(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data/miregex DESTINATION ${SHARE_INSTALL_PREFIX}/aul )
diff --git a/include/aul_cmd.h b/include/aul_cmd.h
index 34181dc2..fa7ee7bd 100755
--- a/include/aul_cmd.h
+++ b/include/aul_cmd.h
@@ -134,6 +134,10 @@ enum app_cmd {
 	RPC_PORT_NOTIFY_RPC_FINISHED = 102,
 	COMPLICATION_UPDATE_REQUEST = 103,
 	APP_NOTIFY_START = 104,
+	WATCHDOG_ENABLE = 105,
+	WATCHDOG_DISABLE = 106,
+	WATCHDOG_PING = 107,
+	WATCHDOG_KICK = 108,
 
 	APP_CMD_MAX
 };
diff --git a/include/aul_watchdog.h b/include/aul_watchdog.h
new file mode 100644
index 00000000..23d5294b
--- /dev/null
+++ b/include/aul_watchdog.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * 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.
+ */
+
+#ifndef __AUL_WATCHDOG_H__
+#define __AUL_WATCHDOG_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Enables watchdog timer.
+ *
+ * @return      @c 0 on success,
+ *              otherwise a negative error value
+ *
+ * @remarks This function is only for App Framework internally.
+ */
+int aul_watchdog_enable(void);
+
+/**
+ * @brief Disables watchdog timer.
+ *
+ * @return      @c 0 on success,
+ *              otherwise a negative error value
+ *
+ * @remarks This function is only for App Framework internally.
+ */
+int aul_watchdog_disable(void);
+
+/**
+ * @brief Kicks whatchdog timer.
+ *
+ * @return      @c 0 on success,
+ *              otherwise a negative error value
+ *
+ * @remarks This function is only for App Framework internally.
+ */
+int aul_watchdog_kick(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AUL_WATCHDOG_H__ */
diff --git a/src/aul_cmd.c b/src/aul_cmd.c
index 357ecd30..61eaf156 100755
--- a/src/aul_cmd.c
+++ b/src/aul_cmd.c
@@ -234,6 +234,14 @@ API const char *aul_cmd_convert_to_string(int cmd)
 		return "COMPLICATION_UPDATE_REQUEST";
 	case APP_NOTIFY_START:
 		return "APP_NOTIFY_START";
+	case WATCHDOG_ENABLE:
+		return "WATCHDOG_ENABLE";
+	case WATCHDOG_DISABLE:
+		return "WATCHDOG_DISABLE";
+	case WATCHDOG_PING:
+		return "WATCHDOG_PING";
+	case WATCHDOG_KICK:
+		return "WATCHDOG_KICK";
 	default:
 		return "CUSTOM_COMMAND";
 	}
diff --git a/src/aul_watchdog.c b/src/aul_watchdog.c
new file mode 100644
index 00000000..cd59cb06
--- /dev/null
+++ b/src/aul_watchdog.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * 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.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdbool.h>
+#include <glib.h>
+
+#include "aul_api.h"
+#include "aul_util.h"
+#include "aul_sock.h"
+#include "aul_error.h"
+#include "aul_watchdog.h"
+#include "aul.h"
+
+typedef struct watchdog_context_s {
+	bool enabled;
+} watchdog_context;
+
+static watchdog_context __context;
+
+API int aul_watchdog_enable(void)
+{
+	int r;
+
+	if (__context.enabled) {
+		_W("Watchdog is already enabled");
+		return AUL_R_OK;
+	}
+
+	r = aul_sock_send_raw(AUL_UTIL_PID, getuid(),
+			WATCHDOG_ENABLE, NULL, 0, AUL_SOCK_NONE);
+	if (r < 0) {
+		_E("Failed to send the watchdog request. ret(%d)", r);
+		return aul_error_convert(r);
+	}
+
+	__context.enabled = true;
+	_D("[__WATCHDOG__] enabled, result(%d)", r);
+	return AUL_R_OK;
+}
+
+API int aul_watchdog_disable(void)
+{
+	int r;
+
+	if (!__context.enabled) {
+		_W("Watchdog is not enabled");
+		return AUL_R_ERROR;
+	}
+
+	r = aul_sock_send_raw(AUL_UTIL_PID, getuid(),
+			WATCHDOG_DISABLE, NULL, 0, AUL_SOCK_NONE);
+	if (r < 0) {
+		_E("Failed to send the watchdog request. ret(%d)", r);
+		return aul_error_convert(r);
+	}
+
+	__context.enabled = false;
+	_D("[__WATCHDOG__] disabled, result(%d)", r);
+	return AUL_R_OK;
+}
+
+API int aul_watchdog_kick(void)
+{
+	int r;
+
+	if (!__context.enabled) {
+		_W("Watchdog is not enabled");
+		return AUL_R_ERROR;
+	}
+
+	r = aul_sock_send_raw(AUL_UTIL_PID, getuid(),
+			WATCHDOG_KICK, NULL, 0, AUL_SOCK_NONE);
+	if (r < 0) {
+		_E("Failed to send the watchdog request. ret(%d)", r);
+		return aul_error_convert(r);
+	}
+
+	_D("[__WATCHDOG__] kicked, result(%d)", r);
+	return AUL_R_OK;
+}
diff --git a/src/launch.c b/src/launch.c
index ccfc8837..188c24b3 100755
--- a/src/launch.c
+++ b/src/launch.c
@@ -429,8 +429,9 @@ int aul_sock_handler(int fd)
 	bundle *kbundle = NULL;
 	int clifd;
 	struct ucred cr;
-
 	const char *pid_str;
+	const char *start_time;
+	struct timeval tv;
 	int pid = -1;
 	int ret;
 
@@ -445,6 +446,9 @@ int aul_sock_handler(int fd)
 		} else {
 			ret = __send_result_to_launchpad(clifd, 0);
 			if (ret < 0) {
+				_E("Failed to send the result. cmd(%s:%d)",
+					aul_cmd_convert_to_string(pkt->cmd),
+					pkt->cmd);
 				free(pkt);
 				return -1;
 			}
@@ -516,6 +520,13 @@ int aul_sock_handler(int fd)
 	case APP_UPDATE_REQUESTED:
 		app_update_requested();
 		break;
+	case WATCHDOG_PING:
+		gettimeofday(&tv, NULL);
+		start_time = bundle_get_val(kbundle, AUL_K_STARTTIME);
+		_W("[__WATCHDOG__] Start time: %s, response time: %ld/%ld",
+				start_time ? start_time : "Unknown",
+				tv.tv_sec, tv.tv_usec);
+		break;
 	default:
 		_E("no support packet");
 	}