Index: uspace/lib/libc/generic/vfs/vfs.c
===================================================================
--- uspace/lib/libc/generic/vfs/vfs.c	(revision 21f32ee1dcb810787a2a4e2ce4f2f3d11dd849cc)
+++ uspace/lib/libc/generic/vfs/vfs.c	(revision ae75e2e3eeabda7f649cf80e1f0e25cbb7a7386e)
@@ -199,5 +199,38 @@
 int unmount(const char *mp)
 {
-	return ENOTSUP;
+	ipcarg_t rc;
+	ipcarg_t rc_orig;
+	aid_t req;
+	size_t mpa_size;
+	char *mpa;
+	
+	mpa = absolutize(mp, &mpa_size);
+	if (!mpa)
+		return ENOMEM;
+	
+	futex_down(&vfs_phone_futex);
+	async_serialize_start();
+	vfs_connect();
+	
+	req = async_send_0(vfs_phone, VFS_IN_UNMOUNT, NULL);
+	rc = async_data_write_start(vfs_phone, (void *) mpa, mpa_size);
+	if (rc != EOK) {
+		async_wait_for(req, &rc_orig);
+		async_serialize_end();
+		futex_up(&vfs_phone_futex);
+		free(mpa);
+		if (rc_orig == EOK)
+			return (int) rc;
+		else
+			return (int) rc_orig;
+	}
+	
+
+	async_wait_for(req, &rc);
+	async_serialize_end();
+	futex_up(&vfs_phone_futex);
+	free(mpa);
+	
+	return (int) rc;
 }