linux-kernel - [PATCH -V26 16/16] vfs: enable "" pathname in openat syscall

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Message-Id: <1296328099-23263-17-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Date:	Sun, 30 Jan 2011 00:38:19 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	hch@...radead.org, viro@...iv.linux.org.uk, adilger@....com,
	corbet@....net, neilb@...e.de, npiggin@...nel.dk,
	hooanon05@...oo.co.jp, bfields@...ldses.org, miklos@...redi.hu
Cc:	linux-fsdevel@...r.kernel.org, sfrench@...ibm.com,
	philippe.deniel@....FR, linux-kernel@...r.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH -V26 16/16] vfs: enable "" pathname in openat syscall

This enable the below usage

fd = openat(dir_fd, "", O_RDONLY);

dir_fd can be O_PATH descriptor. It does all access check as per the
open flags.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
---
 fs/open.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/open.c b/fs/open.c
index 328a76e..bccb12d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -893,7 +893,7 @@ EXPORT_SYMBOL(fd_install);
 
 long do_sys_open(int dfd, const char __user *filename, int flags, int mode)
 {
-	char *tmp = getname(filename);
+	char *tmp = getname_null(filename);
 	int fd = PTR_ERR(tmp);
 
 	if (!IS_ERR(tmp)) {
-- 
1.7.1

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