Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031430AbbKDS7r (ORCPT ); Wed, 4 Nov 2015 13:59:47 -0500 Received: from mail-pa0-f53.google.com ([209.85.220.53]:36398 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756136AbbKDS7o (ORCPT ); Wed, 4 Nov 2015 13:59:44 -0500 Date: Wed, 4 Nov 2015 10:59:52 -0800 From: Stephen Hemminger To: Miklos Szeredi , Hannes Frederic Sowa , Steven Rostedt , Al Viro , linux-api@vger.kernel.org Cc: linux-unionfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] overlayfs: move super block magic number to magic.h Message-ID: <20151104105952.7232543a@xeon-e3> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1554 Lines: 45 The overlayfs file system is not recognized by programs like tail because the magic number is not in standard header location. Move it so that the value will propagate on for the GNU library and utilities. Needs to go in the fstatfs manual page as well. Signed-off-by: Stephen Hemminger --- fs/overlayfs/super.c | 2 -- include/uapi/linux/magic.h | 1 + 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index e38ee0f..a389675 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -24,8 +24,6 @@ MODULE_AUTHOR("Miklos Szeredi "); MODULE_DESCRIPTION("Overlay filesystem"); MODULE_LICENSE("GPL"); -#define OVERLAYFS_SUPER_MAGIC 0x794c7630 - struct ovl_config { char *lowerdir; char *upperdir; diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h index accb036..63ccb03 100644 --- a/include/uapi/linux/magic.h +++ b/include/uapi/linux/magic.h @@ -31,6 +31,7 @@ #define PSTOREFS_MAGIC 0x6165676C #define EFIVARFS_MAGIC 0xde5e81e4 #define HOSTFS_SUPER_MAGIC 0x00c0ffee +#define OVERLAYFS_SUPER_MAGIC 0x794c7630 #define MINIX_SUPER_MAGIC 0x137F /* minix v1 fs, 14 char names */ #define MINIX_SUPER_MAGIC2 0x138F /* minix v1 fs, 30 char names */ -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/