linux-kernel - [PATCH v2 08/25] xattr: add is_fscaps

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Message-Id: <20240221-idmap-fscap-refactor-v2-8-3039364623bd@kernel.org>
Date: Wed, 21 Feb 2024 15:24:39 -0600
From: "Seth Forshee (DigitalOcean)" <sforshee@...nel.org>
To: Christian Brauner <brauner@...nel.org>, 
 Seth Forshee <sforshee@...nel.org>, Serge Hallyn <serge@...lyn.com>, 
 Paul Moore <paul@...l-moore.com>, Eric Paris <eparis@...hat.com>, 
 James Morris <jmorris@...ei.org>, Alexander Viro <viro@...iv.linux.org.uk>, 
 Jan Kara <jack@...e.cz>, Stephen Smalley <stephen.smalley.work@...il.com>, 
 Ondrej Mosnacek <omosnace@...hat.com>, 
 Casey Schaufler <casey@...aufler-ca.com>, Mimi Zohar <zohar@...ux.ibm.com>, 
 Roberto Sassu <roberto.sassu@...wei.com>, 
 Dmitry Kasatkin <dmitry.kasatkin@...il.com>, 
 Eric Snowberg <eric.snowberg@...cle.com>, 
 "Matthew Wilcox (Oracle)" <willy@...radead.org>, 
 Jonathan Corbet <corbet@....net>, Miklos Szeredi <miklos@...redi.hu>, 
 Amir Goldstein <amir73il@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
 linux-security-module@...r.kernel.org, audit@...r.kernel.org, 
 selinux@...r.kernel.org, linux-integrity@...r.kernel.org, 
 linux-doc@...r.kernel.org, linux-unionfs@...r.kernel.org
Subject: [PATCH v2 08/25] xattr: add is_fscaps_xattr() helper

Add a helper to determine if an xattr time is XATTR_NAME_CAPS instead of
open-coding a string comparision.

Suggested-by: Amir Goldstein <amir73il@...il.com>
Signed-off-by: Seth Forshee (DigitalOcean) <sforshee@...nel.org>
---
 include/linux/xattr.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index d20051865800..cbacfb4d74fa 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -28,6 +28,11 @@ static inline bool is_posix_acl_xattr(const char *name)
 	       (strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0);
 }
 
+static inline bool is_fscaps_xattr(const char *name)
+{
+	return strcmp(name, XATTR_NAME_CAPS) == 0;
+}
+
 /*
  * struct xattr_handler: When @name is set, match attributes with exactly that
  * name.  When @prefix is set instead, match attributes with that prefix and

-- 
2.43.0