Add herbe (notification display)

programs/slstatus/components/kernel_release.c

@@ -0,0 +1,19 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <sys/utsname.h>
+
+#include "../slstatus.h"
+#include "../util.h"
+
+const char *
+kernel_release(const char *unused)
+{
+	struct utsname udata;
+
+	if (uname(&udata) < 0) {
+		warn("uname:");
+		return NULL;
+	}
+
+	return bprintf("%s", udata.release);
+}