Index: uspace/lib/c/generic/io/klog.c
===================================================================
--- uspace/lib/c/generic/io/klog.c	(revision 0caa075ea82d03f424199300f84ace6747f5bd02)
+++ uspace/lib/c/generic/io/klog.c	(revision 0caa075ea82d03f424199300f84ace6747f5bd02)
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013 Martin Sucha
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#include <libc.h>
+#include <str.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <abi/klog.h>
+#include <io/klog.h>
+#include <abi/log.h>
+
+size_t klog_write(log_level_t lvl, const void *buf, size_t size)
+{
+	ssize_t ret = (ssize_t) __SYSCALL4(SYS_KLOG, KLOG_WRITE, (sysarg_t) buf,
+	    size, lvl);
+	
+	if (ret >= 0)
+		return (size_t) ret;
+	
+	return 0;
+}
+
+int klog_read(void *data, size_t size)
+{
+	return (int) __SYSCALL4(SYS_KLOG, KLOG_READ, (uintptr_t) data, size, 0);
+}
+
+/** @}
+ */