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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-Archived-By: 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; 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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