linux-kernel - [PATCH 07/16] fs: add inode operations to get/set/remove fscaps

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Message-Id: <20231129-idmap-fscap-refactor-v1-7-da5a26058a5b@kernel.org>
Date:   Wed, 29 Nov 2023 15:50:25 -0600
From:   "Seth Forshee (DigitalOcean)" <sforshee@...nel.org>
To:     Christian Brauner <brauner@...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>,
        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,
        linux-unionfs@...r.kernel.org,
        "Seth Forshee (DigitalOcean)" <sforshee@...nel.org>
Subject: [PATCH 07/16] fs: add inode operations to get/set/remove fscaps

Add inode operations for getting, setting and removing filesystem
capabilities rather than passing around raw xattr data. This provides
better type safety for ids contained within xattrs.

Signed-off-by: Seth Forshee (DigitalOcean) <sforshee@...nel.org>
---
 include/linux/fs.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 98b7a7a8c42e..a0a77f67b999 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2002,6 +2002,11 @@ struct inode_operations {
 				     int);
 	int (*set_acl)(struct mnt_idmap *, struct dentry *,
 		       struct posix_acl *, int);
+	int (*get_fscaps)(struct mnt_idmap *, struct dentry *,
+			  struct vfs_caps *);
+	int (*set_fscaps)(struct mnt_idmap *, struct dentry *,
+			  const struct vfs_caps *, int flags);
+	int (*remove_fscaps)(struct mnt_idmap *, struct dentry *);
 	int (*fileattr_set)(struct mnt_idmap *idmap,
 			    struct dentry *dentry, struct fileattr *fa);
 	int (*fileattr_get)(struct dentry *dentry, struct fileattr *fa);

-- 
2.43.0