There is now one-and-only-one copy of syslog_putc. It is in the SYSLOG channel logic and can redirect syslog output as needed. All former syslog_putc versions were renamed and the corresponding SYSLOG device initializaiton now calls syslog_channel()

include/nuttx/syslog/ramlog.h

@@ -183,7 +183,7 @@ int ramlog_consoleinit(void);
 #endif
 
 /****************************************************************************
- * Name: ramlog_syslog_initialize
+ * Name: ramlog_syslog_channel
  *
  * Description:
  *   Create the RAM logging device and register it at the specified path.
@@ -195,7 +195,24 @@ int ramlog_consoleinit(void);
  ****************************************************************************/
 
 #ifdef CONFIG_RAMLOG_SYSLOG
-int ramlog_syslog_initialize(void);
+int ramlog_syslog_channel(void);
+#endif
+
+/****************************************************************************
+ * Name: ramlog_putc
+ *
+ * Description:
+ *   This is the low-level system logging interface.  The debugging/syslogging
+ *   interfaces are syslog() and lowsyslog().  The difference is that
+ *   the syslog() internface writes to syslog device (usually fd=1, stdout)
+ *   whereas lowsyslog() uses a lower level interface that works from
+ *   interrupt handlers.  This function is a a low-level interface used to
+ *   implement lowsyslog() when CONFIG_RAMLOG_SYSLOG=y and CONFIG_SYSLOG=y
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_RAMLOG_CONSOLE) || defined(CONFIG_RAMLOG_SYSLOG)
+int ramlog_putc(int ch);
 #endif
 
 #undef EXTERN

include/nuttx/syslog/syslog.h

@@ -56,7 +56,7 @@
  * CONFIG_SYSLOG_DEVPATH - The full path to the system logging device
  *
  * In addition, some SYSLOG device must also be enabled that will provide
- * the syslog_putc() function.  As of this writing, there are two SYSLOG
+ * the syslog output "channel.  As of this writing, there are two SYSLOG
  * devices avaiable:
  *
  *   1. A RAM SYSLOGing device that will log data into a circular buffer
@@ -191,23 +191,6 @@ int syslog_initialize(void);
 #  define syslog_initialize()
 #endif
 
-/****************************************************************************
- * Name: syslog_putc
- *
- * Description:
- *   This is the low-level system logging interface.
- *
- * Input Parameters:
- *   ch - The character to add to the SYSLOG (must be positive).
- *
- * Returned Value:
- *   On success, the character is echoed back to the caller.  A negated
- *   errno value is returned on any failure.
- *
- ****************************************************************************/
-
-int syslog_putc(int ch);
-
 /****************************************************************************
  * Name: syslog_flush
  *

include/nuttx/syslog/syslog_console.h

@@ -51,10 +51,10 @@
 /* Configuration ************************************************************/
 /* CONFIG_SYSLOG_CONSOLE - Use the syslog logging output as a system console.
  *   If this feature is enabled (along with CONFIG_DEV_CONSOLE), then all
- *   console output will be re-directed to a syslog_putc function.  This
+ *   console output will be re-directed to the SYSLOG output channel.  This
  *   is useful, for example, if the only console is a Telnet console.  Then
  *   in that case, console output from non-Telnet threads will go to the
- *   syslog_putc output.
+ *   SYSLOG output channel.
  */
 
 #ifndef CONFIG_DEV_CONSOLE