From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794302336; b=LCN+m6KicBeTo0dQE53sIU0j1t7n7SFOKgevj7ucWfM2ZPosqzBqI5Em5rGABy/02tkg qBJfAQpK78u0Ex/RuIyR9qt3nLTu4pt+j2b3VuZHsSBH51VzYx4L1vrIPmiMrBFVgEYKb suitzp7SenU5F+ogLB2De7Owl2Bua2S7j90wIFHARMSszC4mVnH9Q3w+NoHIW9eLX/WU0 9LozsMG8K0GqaVP7E/SMHz3Z6d4SdhWZvnz9LFzFD8NjuJY4DSWlKMYFQUyvxL25pw7Uh W7nlQld2t9jC226GnduHeu9BbSJRviSXKQ81nqryX4imFmTsYFuYB3cU6mPW8bG2V2Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794302336; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer:X-Developer-Signature:X-Developer-Key; bh=3vbBpJ70QQUgTHc+9S4BdJlbLsLxsrAejDAnX1SbNic=; b=1i2iBcMYNpO/4uruVegThLHWorlvc3yUWCccqUcKbfrZHUlxG3heMBRO/3rO/odVoug+ csceGYge2Z8n8zGVspC0q7Cc+atqspkcY1E04EVGwQsztcSTej7B7/lF+/0B+GNUiAjfV 1vPKUYggZEHk5eShkqSDWfRtynLnbqC8hswmhgxd8JyLpcSWi7PyrQRkL7Ps8pgUeo6ef 9JOL2LFcRsx/1NOohjuVC/PQCTYGoqGR4NaJb+FLE7PacEV/JipFHKO+rMqEba9Rf/GIK GGOXJD9ZKbyhBL7ijAOsogB9mzeYgc1k6Q9T03qjlCR/uD3P+FUg7RufkkNvTq9skWw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="XaFZlFw/"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D1747606B165; Tue, 10 Nov 2026 09:18:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=XaFZlFw/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F4BE1F0089F; Tue, 10 Nov 2026 09:18:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794302335; bh=3vbBpJ70QQUgTHc+9S4BdJlbLsLxsrAejDAnX1SbNic=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=XaFZlFw/DdnrRtOVsZEGp6QUGtmIPGuUZ+N4Hdx0OM0hwO0dbNjERxcTuZMYTcqjH niXGeBr0dTqT4XuSBUJ4fHJ8LPa5mQ0gDOgO3p3iTEzXRwE29SgFUYzxoeoORUG48o 4DJ6Rk3Cvuwko+rTIDQL/lX2vrxaez+zErrVL/jJfRbWQLh2oJpIux07YdOMODEWT1 AOcuJ+CDnO6LeM9EEmN9aS0LHpgFim9TfKS15MTiXRxDbWwt1Q2uZLl1zL9z5geSoA YWA/+bXNEPPKIhhzJ78YCVVL+ahtQQQJ2oXlHwFAREVtyR2al+Mwd8OYF0Lie832Vc YrFaKf6APBZQQ== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:42 +0100 Subject: [PATCH RFC 26/41] xenfs: use fc_init_pseudo() X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261110-work-loop-pseudo-v1-26-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> In-Reply-To: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Jann Horn , Chris Mason , Josef Bacik , Christoph Hellwig , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Alexander Viro , Jan Kara , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, driver-core@lists.linux.dev, linux-mm@kvack.org, bpf@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, fuse-devel@lists.linux.dev, linux-efi@vger.kernel.org, xen-devel@lists.xenproject.org, ocfs2-devel@lists.linux.dev, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-usb@vger.kernel.org, Amir Goldstein , linux-erofs@lists.ozlabs.org, linux-kselftest@vger.kernel.org, "Christian Brauner (Amutable)" X-Mailer: b4 0.17-dev-ce4c1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1017; i=brauner@kernel.org; h=from:subject:message-id; bh=xO/6EKTyizodOr3jpQQP+lr/++u9/c+Tcs9J04rmnys=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWR9erBpDZsiO/PvrRUOZYzHr09ZKmN5JzQjsOPDecc1T gv0mD6s6ihlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZjIvSqG/3GRPk4+yw9m6Lz9 kr3Yn+deca/qnJO3fHSPGiyKaKxs38HwV3xiCl/tWo1fM/4fmOj0yLklovHKITOdd0+MZx7UWyL 0lg8A X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Initialize xenfs as a pseudo filesystem. This raises SB_I_PSEUDO and also SB_I_NOEXEC and SB_I_NODEV. xenfs never holds executables or device nodes. SB_I_NOEXEC also refuses PROT_EXEC mappings. xenfs maps the xenstore page and guest memory through privcmd, both data. Signed-off-by: Christian Brauner (Amutable) --- drivers/xen/xenfs/super.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c index 37ea7c5c0346..aba7d038ed73 100644 --- a/drivers/xen/xenfs/super.c +++ b/drivers/xen/xenfs/super.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -80,6 +81,7 @@ static const struct fs_context_operations xenfs_context_ops = { static int xenfs_init_fs_context(struct fs_context *fc) { + fc_init_pseudo(fc); fc->ops = &xenfs_context_ops; return 0; } -- 2.53.0