linux-kernel - [patch] fuse: fix mknod of regular file

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Message-Id: <E1Hq4Mw-0002qK-00@dorka.pomaz.szeredi.hu>
Date:	Mon, 21 May 2007 11:39:58 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	akpm@...ux-foundation.org, stable@...nel.org
CC:	linux-kernel@...r.kernel.org
Subject: [patch] fuse: fix mknod of regular file

From: Miklos Szeredi <mszeredi@...e.cz>

The wrong lookup flag was tested in ->create() causing havoc (error or
Oops) when a regular file was created with mknod() in a fuse
filesystem.

Thanks to J. Cameijo Cerdeira for the report.

Kernels 2.6.18 onward are affected.  Please apply to -stable as well.

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
---

Index: linux/fs/fuse/dir.c
===================================================================
--- linux.orig/fs/fuse/dir.c	2007-05-21 11:34:32.000000000 +0200
+++ linux/fs/fuse/dir.c	2007-05-21 11:34:34.000000000 +0200
@@ -485,7 +485,7 @@ static int fuse_mknod(struct inode *dir,
 static int fuse_create(struct inode *dir, struct dentry *entry, int mode,
 		       struct nameidata *nd)
 {
-	if (nd && (nd->flags & LOOKUP_CREATE)) {
+	if (nd && (nd->flags & LOOKUP_OPEN)) {
 		int err = fuse_create_open(dir, entry, mode, nd);
 		if (err != -ENOSYS)
 			return err;
-
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