linux-kernel - [PATCH 07/16] vfs: do_last(): check LOOKUP

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Date:	Mon, 21 May 2012 17:30:11 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	viro@...IV.linux.org.uk
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	hch@...radead.org, torvalds@...ux-foundation.org, mszeredi@...e.cz
Subject: [PATCH 07/16] vfs: do_last(): check LOOKUP_DIRECTORY

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

Check for ENOTDIR before finishing open.  This allows this code to be shared
between O_CREAT and plain opens.

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
---
 fs/namei.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 3f4b286..d17a4e4 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2388,6 +2388,9 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
 	error = -EISDIR;
 	if (S_ISDIR(nd->inode->i_mode))
 		goto exit;
+	error = -ENOTDIR;
+	if ((nd->flags & LOOKUP_DIRECTORY) && !nd->inode->i_op->lookup)
+		goto exit;
 ok:
 	if (!S_ISREG(nd->inode->i_mode))
 		will_truncate = 0;
-- 
1.7.7

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