From 5d6c31910bc0713e37628dc0ce677dcb13c8ccf4 Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruenba@redhat.com>
Date: Thu, 29 Sep 2016 17:48:42 +0200
Subject: xattr: Add __vfs_{get,set,remove}xattr helpers

Right now, various places in the kernel check for the existence of
getxattr, setxattr, and removexattr inode operations and directly call
those operations.  Switch to helper functions and test for the IOP_XATTR
flag instead.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Acked-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/cachefiles/bind.c  | 4 ++--
 fs/cachefiles/namei.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

(limited to 'fs/cachefiles')

diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c
index 6af790fc3df8..3ff867f87d73 100644
--- a/fs/cachefiles/bind.c
+++ b/fs/cachefiles/bind.c
@@ -20,6 +20,7 @@
 #include <linux/mount.h>
 #include <linux/statfs.h>
 #include <linux/ctype.h>
+#include <linux/xattr.h>
 #include "internal.h"
 
 static int cachefiles_daemon_add_cache(struct cachefiles_cache *caches);
@@ -126,8 +127,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache)
 	if (d_is_negative(root) ||
 	    !d_backing_inode(root)->i_op->lookup ||
 	    !d_backing_inode(root)->i_op->mkdir ||
-	    !d_backing_inode(root)->i_op->setxattr ||
-	    !d_backing_inode(root)->i_op->getxattr ||
+	    !(d_backing_inode(root)->i_opflags & IOP_XATTR) ||
 	    !root->d_sb->s_op->statfs ||
 	    !root->d_sb->s_op->sync_fs)
 		goto error_unsupported;
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 3f7c2cd41f8f..6eb3dec2adbb 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -20,6 +20,7 @@
 #include <linux/namei.h>
 #include <linux/security.h>
 #include <linux/slab.h>
+#include <linux/xattr.h>
 #include "internal.h"
 
 #define CACHEFILES_KEYBUF_SIZE 512
@@ -799,8 +800,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
 	}
 
 	ret = -EPERM;
-	if (!d_backing_inode(subdir)->i_op->setxattr ||
-	    !d_backing_inode(subdir)->i_op->getxattr ||
+	if (!(d_backing_inode(subdir)->i_opflags & IOP_XATTR) ||
 	    !d_backing_inode(subdir)->i_op->lookup ||
 	    !d_backing_inode(subdir)->i_op->mkdir ||
 	    !d_backing_inode(subdir)->i_op->create ||
-- 
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