syslog: add option to prefix process name

drivers/syslog/Kconfig

@@ -142,20 +142,20 @@ config SYSLOG_TIMESTAMP_BUFFER
 	---help---
 		Buffer size to store syslog formatted timestamps.
 
-config SYSLOG_COLOR_OUTPUT
-	bool "Colored syslog output"
-	default n
-	---help---
-		Enables colored output in syslog, according to message priority.
-
 config SYSLOG_PRIORITY
 	bool "Prepend priority to syslog message"
 	default n
 	---help---
 		Prepend log priority (severity) to syslog message.
 
+config SYSLOG_PROCESS_NAME
+  bool "Prepend process name to syslog message"
+	default n
+	---help---
+		Prepend Process name to syslog message.
+
 config SYSLOG_PROCESSID
-	bool "Prepend Process ID to syslog message"
+	bool "Prepend process ID to syslog message"
 	default n
 	---help---
 		Prepend Process ID to syslog message.
@@ -173,6 +173,12 @@ config SYSLOG_PREFIX_STRING
 	---help---
 		The prefix string to be prepend.
 
+config SYSLOG_COLOR_OUTPUT
+	bool "Colored syslog output"
+	default n
+	---help---
+		Enables colored output in syslog, according to message priority.
+
 choice
 	prompt "System log device"
 	default SYSLOG_CONSOLE if !ARCH_LOWPUTC

drivers/syslog/vsyslog.c

@@ -67,6 +67,9 @@ int nx_vsyslog(int priority, FAR const IPTR char *fmt, FAR va_list *ap)
 {
   struct lib_syslogstream_s stream;
   int ret;
+#if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_SYSLOG_PROCESS_NAME)
+  struct tcb_s *tcb;
+#endif
 #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED)
   time_t time;
   struct tm tm;
@@ -131,7 +134,7 @@ int nx_vsyslog(int priority, FAR const IPTR char *fmt, FAR va_list *ap)
     }
 
 #if defined(CONFIG_SYSLOG_TIMESTAMP)
-  /* Pre-pend the message with the current time, if available */
+  /* Prepend the message with the current time, if available */
 
 #if defined(CONFIG_SYSLOG_TIMESTAMP_FORMATTED)
   time = ts.tv_sec;
@@ -157,7 +160,7 @@ int nx_vsyslog(int priority, FAR const IPTR char *fmt, FAR va_list *ap)
 #endif
 
 #if defined(CONFIG_SYSLOG_PROCESSID)
-  /* Pre-pend the Process ID */
+  /* Prepend the Process ID */
 
   ret += lib_sprintf(&stream.public, "[%2d] ", (int)getpid());
 #endif
@@ -201,17 +204,24 @@ int nx_vsyslog(int priority, FAR const IPTR char *fmt, FAR va_list *ap)
 #endif
 
 #if defined(CONFIG_SYSLOG_PRIORITY)
-  /* Pre-pend the message priority. */
+  /* Prepend the message priority. */
 
   ret += lib_sprintf(&stream.public, "[%6s] ", g_priority_str[priority]);
 #endif
 
 #if defined(CONFIG_SYSLOG_PREFIX)
-  /* Pre-pend the prefix, if available */
+  /* Prepend the prefix, if available */
 
   ret += lib_sprintf(&stream.public, "%s", CONFIG_SYSLOG_PREFIX_STRING);
 #endif
 
+#if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_SYSLOG_PROCESS_NAME)
+  /* Prepend the process name */
+
+  tcb = nxsched_get_tcb(getpid());
+  ret += lib_sprintf(&stream.public, "%s: ", tcb->name);
+#endif
+
   /* Generate the output */
 
   ret += lib_vsprintf(&stream.public, fmt, *ap);