add format attributes to log functions

ok claudio@

diff --git a/usr.sbin/iscsid/log.h b/usr.sbin/iscsid/log.h
index 01bbeb3..ef3bd16 100644 (file)
--- a/usr.sbin/iscsid/log.h
+++ b/usr.sbin/iscsid/log.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: log.h,v 1.2 2011/04/27 18:59:01 claudio Exp $ */
+/*     $OpenBSD: log.h,v 1.3 2016/07/18 21:18:48 benno Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -23,13 +23,21 @@
 
 void   log_init(int);
 void   log_verbose(int);
-void   vlog(int, const char *, va_list);
-void   log_warn(const char *, ...);
-void   log_warnx(const char *, ...);
-void   log_info(const char *, ...);
-void   log_debug(const char *, ...);
-void   fatal(const char *) __dead;
-void   fatalx(const char *) __dead;
+void   vlog(int, const char *, va_list)
+               __attribute__((__format__ (printf, 2, 0)));
+void   log_warn(const char *, ...)
+               __attribute__((__format__ (printf, 1, 2)));
+void   log_warnx(const char *, ...)
+               __attribute__((__format__ (printf, 1, 2)));
+void   log_info(const char *, ...)
+               __attribute__((__format__ (printf, 1, 2)));
+void   log_debug(const char *, ...)
+               __attribute__((__format__ (printf, 1, 2)));
+void   fatal(const char *) __dead
+               __attribute__((__format__ (printf, 1, 0)));
+void   fatalx(const char *) __dead
+               __attribute__((__format__ (printf, 1, 0)));
+
 void   log_hexdump(void *, size_t);
 void   log_pdu(struct pdu *, int);