linux-kernel - [PATCH] kernfs: Add noop_fsync to supported kernfs_file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <1476467802-11369-1-git-send-email-tony.luck@intel.com>
Date:   Fri, 14 Oct 2016 10:56:42 -0700
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] kernfs: Add noop_fsync to supported kernfs_file_fops

From: Tony Luck <tony.luck@...el.com>

If you edit a kernfs backed file with vi(1), you see an ugly error
message when you write the file because vi tries to fsync(2) the
file after writing, which fails.

We have noop_fsync() for this, use it.

Signed-off-by: Tony Luck <tony.luck@...el.com>
---
 fs/kernfs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 2bcb86e6e6ca..78219d5644e9 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -911,6 +911,7 @@ const struct file_operations kernfs_file_fops = {
 	.open		= kernfs_fop_open,
 	.release	= kernfs_fop_release,
 	.poll		= kernfs_fop_poll,
+	.fsync		= noop_fsync,
 };
 
 /**
-- 
2.5.0