From 872cf03f26c2801ae6c3008ce5fa0d7856f5f85d Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 14 Dec 2025 18:10:13 +0100
Subject: libc: implement err/warn functions

---
 lib/libc/err/vwarn.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 lib/libc/err/vwarn.c

(limited to 'lib/libc/err/vwarn.c')

diff --git a/lib/libc/err/vwarn.c b/lib/libc/err/vwarn.c
new file mode 100644
index 00000000..2f485d93
--- /dev/null
+++ b/lib/libc/err/vwarn.c
@@ -0,0 +1,16 @@
+#include <stdarg.h>
+#include <stdio.h>
+
+extern char *__progname;
+
+void vwarn(const char *fmt, va_list args)
+{
+	fprintf(stderr, "%s: ", __progname);
+
+	if (fmt != NULL) {
+		vfprintf(stderr, fmt, args);
+		fprintf(stderr, ": ");
+	}
+
+	perror(NULL);
+}
-- 
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