finalizing logging and multierror

logging/errs_linux.go

@@ -0,0 +1,18 @@
+package logging
+
+import (
+	`errors`
+	`fmt`
+)
+
+var (
+	// ErrNoSysD indicates that the user attempted to add a SystemDLogger to a MultiLogger but systemd is unavailable.
+	ErrNoSysD error = errors.New("a systemd (journald) Logger was requested but systemd is unavailable on this system")
+	// ErrNoSyslog indicates that the user attempted to add a SyslogLogger to a MultiLogger but syslog's logger device is unavailable.
+	ErrNoSyslog error = errors.New("a Syslog Logger was requested but Syslog is unavailable on this system")
+	/*
+		ErrInvalidDevLog indicates that the user attempted to add a SyslogLogger to a MultiLogger but
+		the Syslog char device file is... not actually a char device file.
+	*/
+	ErrInvalidDevLog error = errors.New(fmt.Sprintf("a Syslog Logger was requested but %v is not a valid logger handle", devlog))
+)