1 files changed, 34 insertions, 0 deletions
diff --git a/provider/download-provider-pid.c b/provider/download-provider-pid.c
new file mode 100755
index 0000000..bd1a223
--- /dev/null
+++ b/provider/download-provider-pid.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2012 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.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+
+//////////////////////////////////////////////////////////////////////////
+/// @brief check whether daemon is alive
+/// @warning lockfd should be managed without close()
+/// @param the patch for locking the file
+int dp_lock_pid(char *path)
+{
+	int lockfd = -1;
+	if ((lockfd = open(path, O_WRONLY | O_CREAT, (0666 & (~000)))) < 0) {
+		return -1;
+	} else if (lockf(lockfd, F_TLOCK, 0) < 0) {
+		close(lockfd);
+		return -1;
+	}
+	return lockfd;
+}