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

[Aneesh Kumar K.V]

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@xxxxxxxxxxxxxxxxxx>
---
 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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