From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B7ED326958; Thu, 8 Jan 2026 07:36:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.89.141.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767857815; cv=none; b=IIydXKF1FnNhtPo0nxwmc155GjWveExMhtC/Te50yWemflBYhMTsfX2TgRFj7lM9aqZn3M5fBRmBGZAiMxnQAm5KImUjSMaBRTE3405bwfNkoyJFMqgLorvPnNixaW4DzNTnzdmiYNb1oub+k3qTMk8oUza1YP2vDU6LlYW6bu8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767857815; c=relaxed/simple; bh=itjYXpQKRnftlsHN61BFl0sIC9dUJc8OiluxzowKzEk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JinGM7qfY5ne8vBBJ2VKWS7wp0WaOnX6PLQUfVYGmNgrPi0EPlllXMdTBfUjs3DLnhsDGqayuLGQAs2TNWzzzLo2+EEY8QRJYfc+DuVDslVSuSN+hPycMrc6HRlDhCgJDzlPBa8F63UvgJin/9RY7bxpt+MOBXD3OP7QE7ZVREw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk; spf=none smtp.mailfrom=ftp.linux.org.uk; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b=IXMdZquV; arc=none smtp.client-ip=62.89.141.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ftp.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b="IXMdZquV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=aD3+Ie3SLvtsh9GPL3oeza5QcNbuEOf1fbgUgR9ntDA=; b=IXMdZquVE8CjudwsS86xBdfV/y lSQEUYP+zRZjc0c600/JlxVCBsWK6kHE+vW95NyFBpkUTMFOCY3UvD1G/b+dN4x6rznfELzoa4aSE LnEwkhsRyD9ij3iPPv/OVdMPhjNvl+JfCL86aEHuIqFQ6XV+Ur3gss/GysrgVLctsN0/JZ1guc7Wu moSeOPCnRYxwoZbOhn6BTQdepx/q+amqH8gcKkOjsvZ2NhuM9EVklw6WfrovM7LJAwMmiuSzwq3yS y1CYZ+Kb9eHAtaLNC+/QFA4kguFKr78LzsmTsqb0XW4ia/cq0GlxKazbUxFXCU0SfOe7WVAl1CYSr 4rGnRSZg==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1vdkas-00000001mjd-3vGm; Thu, 08 Jan 2026 07:38:06 +0000 From: Al Viro To: linux-fsdevel@vger.kernel.org Cc: torvalds@linux-foundation.org, brauner@kernel.org, jack@suse.cz, mjguzik@gmail.com, paul@paul-moore.com, axboe@kernel.dk, audit@vger.kernel.org, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 17/59] allow to use CLASS() for struct filename * Date: Thu, 8 Jan 2026 07:37:21 +0000 Message-ID: <20260108073803.425343-18-viro@zeniv.linux.org.uk> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260108073803.425343-1-viro@zeniv.linux.org.uk> References: <20260108073803.425343-1-viro@zeniv.linux.org.uk> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: Al Viro Not all users match that model, but quite a few do. No mindless mass conversions, please... Added: CLASS(filename, name)(user_path) => getname(user_path) CLASS(filename_kernel, name)(string) => getname_kernel(string) CLASS(filename_flags, name)(user_path, flags) => getname_flags(user_path, flags) CLASS(filename_uflags, name)(user_path, flags) => getname_uflags(user_path, flags) CLASS(filename_maybe_null, name)(user_path, flags) => getname_maybe_null(user_path, flags) CLASS(filename_consume, name)(filename) => no_free_ptr(filename) all with putname() as destructor. "flags" in filename_flags() is in LOOKUP_... space, only LOOKUP_EMPTY matters. "flags" in filename_uflags() and filename_maybe_null() is in AT_...... space, and only AT_EMPTY_PATH matters. These conventions might be worth reconsidering... Signed-off-by: Al Viro --- include/linux/fs.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/fs.h b/include/linux/fs.h index a74ffcbe8407..ed16644545db 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2522,6 +2522,13 @@ static inline struct filename *refname(struct filename *name) return name; } +DEFINE_CLASS(filename, struct filename *, putname(_T), getname(p), const char __user *p) +EXTEND_CLASS(filename, _kernel, getname_kernel(p), const char *p) +EXTEND_CLASS(filename, _flags, getname_flags(p, f), const char __user *p, unsigned int f) +EXTEND_CLASS(filename, _uflags, getname_uflags(p, f), const char __user *p, unsigned int f) +EXTEND_CLASS(filename, _maybe_null, getname_maybe_null(p, f), const char __user *p, unsigned int f) +EXTEND_CLASS(filename, _consume, no_free_ptr(p), struct filename *p) + extern int finish_open(struct file *file, struct dentry *dentry, int (*open)(struct inode *, struct file *)); extern int finish_no_open(struct file *file, struct dentry *dentry); -- 2.47.3