diff --git a/include/err.h b/include/err.h
index 9f5cb6b..3dffbae 100644
--- a/include/err.h
+++ b/include/err.h
@@ -12,11 +12,15 @@ void warn(const char *, ...);
 void vwarn(const char *, va_list);
 void warnx(const char *, ...);
 void vwarnx(const char *, va_list);
+void warnc(int, const char *, ...);
+void vwarnc(int, const char *, va_list);
 
 _Noreturn void err(int, const char *, ...);
 _Noreturn void verr(int, const char *, va_list);
 _Noreturn void errx(int, const char *, ...);
 _Noreturn void verrx(int, const char *, va_list);
+_Noreturn void errc(int, int, const char *, ...);
+_Noreturn void verrc(int, int, const char *, va_list);
 
 #ifdef __cplusplus
 }
diff --git a/src/legacy/err.c b/src/legacy/err.c
index 0d6ab52..a7e1bdf 100644
--- a/src/legacy/err.c
+++ b/src/legacy/err.c
@@ -1,18 +1,26 @@
 #include <err.h>
+#include <errno.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
+#include <string.h>
 
 extern char *__progname;
 
-void vwarn(const char *fmt, va_list ap)
+void vwarnc(int error, const char *fmt, va_list ap)
 {
 	fprintf (stderr, "%s: ", __progname);
 	if (fmt) {
 		vfprintf(stderr, fmt, ap);
 		fputs (": ", stderr);
 	}
-	perror(0);
+	fputs(strerror(error), stderr);
+	fputc('\n', stderr);
+}
+
+void vwarn(const char *fmt, va_list ap)
+{
+	vwarnc(errno, fmt, ap);
 }
 
 void vwarnx(const char *fmt, va_list ap)
@@ -22,6 +30,12 @@ void vwarnx(const char *fmt, va_list ap)
 	putc('\n', stderr);
 }
 
+_Noreturn void verrc(int status, int error, const char *fmt, va_list ap)
+{
+	vwarnc(error, fmt, ap);
+	exit(status);
+}
+
 _Noreturn void verr(int status, const char *fmt, va_list ap)
 {
 	vwarn(fmt, ap);
@@ -34,6 +48,14 @@ _Noreturn void verrx(int status, const char *fmt, va_list ap)
 	exit(status);
 }
 
+void warnc(int error, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarnc(error, fmt, ap);
+	va_end(ap);
+}
+
 void warn(const char *fmt, ...)
 {
 	va_list ap;
@@ -50,6 +72,14 @@ void warnx(const char *fmt, ...)
 	va_end(ap);
 }
 
+_Noreturn void errc(int status, int error, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verrc(status, error, fmt, ap);
+	va_end(ap);
+}
+
 _Noreturn void err(int status, const char *fmt, ...)
 {
 	va_list ap;