linux-kernel - [PATCH 1/3] vfs: Introduce XATTR_SET

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Date:	Mon, 20 Jan 2014 15:15:10 +0100
From:	Florian Weimer <fweimer@...hat.com>
To:	linux-fsdevel@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk
Subject: [PATCH 1/3] vfs: Introduce XATTR_SET_MASK

This will be used to separate the xattr operations from the AT_* flags.

Cc: Alexander Viro <viro@...iv.linux.org.uk>
Signed-off-by: Florian Weimer <fweimer@...hat.com>
---
 fs/xattr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/xattr.c b/fs/xattr.c
index 3377dff..9e44641 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -24,6 +24,8 @@
 
 #include <asm/uaccess.h>
 
+#define XATTR_SET_MASK (XATTR_CREATE | XATTR_REPLACE)
+
 /*
  * Check permissions for extended attribute access.  This is a bit complicated
  * because different namespaces have very different rules.
@@ -327,7 +329,7 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
 	void *vvalue = NULL;	/* If non-NULL, we used vmalloc() */
 	char kname[XATTR_NAME_MAX + 1];
 
-	if (flags & ~(XATTR_CREATE|XATTR_REPLACE))
+	if (flags & ~XATTR_SET_MASK)
 		return -EINVAL;
 
 	error = strncpy_from_user(kname, name, sizeof(kname));
-- 
1.8.3.1

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