1 files changed, 31 insertions, 0 deletions
diff --git a/include/logmsg.h b/include/logmsg.h
new file mode 100644
index 0000000..c480c8b
--- /dev/null
+++ b/include/logmsg.h
@@ -0,0 +1,31 @@
+#ifndef LOGMSG_H
+#define LOGMSG_H
+
+#include <errno.h>
+#include <stdlib.h>
+#include "error.h"
+
+extern void logmsg(const char *who, int ecode, unsigned int class,
+	const char *msg);
+
+/* useful combinations of params */
+/* class: FATAL (hard) - system error */
+#define err_sys(w,e) logmsg(w,e,FATAL,"")
+#define err_sys_plus(w,e,m) logmsg(w,e,FATAL,m)
+/* class: WARN (application) - temporary error */
+#define err_tmp(w,e,m) logmsg(w,e,WARN,m)
+#define err_tmp_plus(w,e,m) logmsg(w,e,WARN,m)
+/* class: facultative ('int'ernal definition */
+#define err_int(w,e,c) logmsg(w,e,c,"")
+#define err_int_plus(w,e,c,m) logmsg(w,e,c,m)
+/* log messages */
+/* #define log(w,m) logmsg(w,0,LOG,m) // obsoleted by */
+#define log_who(w,m) logmsg(w,0,LOG,m)
+#define log_anon(m) logmsg("",0,LOG,m)
+#define log_cat(n) logmsg("",0,CAT,m)
+
+/* build log message from multiple partial strings */
+extern char *build_log_msg(const char *[]);
+#define B(...) build_log_msg((const char *[]){__VA_ARGS__,NULL}) // K/R sect. 7.3
+
+#endif