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b=KN56aSxEcIL4HezFtJpqamXDQkWCizrnZgnkUMIpPJsU7rRuUGbPuKCmoeZKs9Z8T KX8yIwO5M/hIAuohYYoYuaalWbYYVGCWyj3OPI2eTlBmHabq5gQXT0Q9S0rZ4F3ut5 C4zEnhc+UMJ2cgIQGGeaEL+qrQxNqtC4KAdzr1uwPXxDiu2A5V9MYGtecJfiijcWEU 2ZNMp5ydhnhMaivDafrR5m7QBhsQux+h3Tx/1FbSjFTpvpg7tD2QL9hYdoAqvzBL6y XALD9so6bBSasGgjOreqMXh2TJ7gKHcAOMhp27y+3npGTFNV3GX8PCI5KY5SzKdsrT HZkVBu2EyzxNA== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:33 +0100 Subject: [PATCH RFC 17/41] securityfs: 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-v1-17-4c998976c6c7@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. securityfs never holds executables or device nodes. AppArmor puts a .null device node into securityfs but only ever opens it via dentry_open() which doesn't care about SB_I_NODEV. Signed-off-by: Christian Brauner (Amutable) --- security/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/security/inode.c b/security/inode.c index 080402367674..93997a9f16fc 100644 --- a/security/inode.c +++ b/security/inode.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -64,6 +65,7 @@ static const struct fs_context_operations securityfs_context_ops = { static int securityfs_init_fs_context(struct fs_context *fc) { + fc_init_pseudo(fc); fc->ops = &securityfs_context_ops; return 0; } -- 2.53.0