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=1794302253; b=fP5aohmd8QnZsGmFpxvyNiekEsfeEdIXOctuhK+IDJfRo9r62sbuHTGzKeAFELAAnmml 72xKfv07hkR9bRBoOr0NKeVWD4YAR3ZxixP6OO8UYRqb7WaWZ34L/2ct5TtgHTSxUUY7Z x3ILQUPHjcfm2mqWgB+VEbA2JQzZcDLcD+L1U/jw4YzMO74pWP/oEi5MStd/zwnhf7vJo MKkOKgy5pHsaxkEWGiX27YAceMoacqkhU/tAdc9J8YvAJPSCE77+bzGZXQcBbQtj9Lhtv i1Jx54vydzY3zpbF1vrVCaaIpnEwJ0yMtvaAg5ppHl4kQxUl/bUuoJcXsYlfV+sIVMg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794302253; 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=is6/oCzWlYT0dy5hhdJaeL3p/9SOujmsKB1o+eMmEtY=; b=fK2OAoCuAk0qnagukQZrxAfDO8u3JsThPFny029/i5TvhgTecAxFdtbzCR9Cmiekdsoq Mu2TGltKAGK9XLmoYaFfMWdF1IadaJkywfZMKL+XgjbusIfWuKaXNqJYGzHqna9woahzQ YjKy1SqJxYUh6ryYSHDjT917Z+J0OzPnB1SeoY1SWdLQ43w+ItAjYL7JRIYIa/KApsLoV HUd43zIpXV1iiEz5/EoIBylULmNbRRNSXpXowX3zYziB5aqgYqB8/qC8b1RWHfL8Ark61 0Fecwu0qkfNKaoweSI6reMfaPVUaKPCD16vvny/nJ+PyIG8c8a0FaSjpV8Hm+oqtMHg== 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=ZazHNZp9; 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 5B9A560A6F5A; Tue, 10 Nov 2026 09:17:33 +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=ZazHNZp9 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0867E1F008A3; Tue, 10 Nov 2026 09:17:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794302253; bh=is6/oCzWlYT0dy5hhdJaeL3p/9SOujmsKB1o+eMmEtY=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ZazHNZp9OYbLw5mOghlT7zT71BJtkKFeTeYcEEEKzzDfsXiViM/CU7Z8cqPuBHNmQ e9Qsk2tN4gY4RJ80Z+UUxi9qzyvuPPNm8ps8zOEOpz7rLmAYJ6n7ctVBBlUT6hriyl KooXsFO8OBY87qPing6B2f+iBZiovte1ZeeWe7o4pK+dmJB9iSNS/HlIBxl0Amx46b gPvb9WPdxrBx6TvqW3glbSTH9bY6q5ObY70N6N4qYVjM2ZhX+jdcQ4SzRPts34JoOG w3dAqOx+U6EfK5Jcx8iiCprAhcZ+V/vGt/hia8DQYE5ftDBbr0PZ3CyxQdoj/Bvs3n V978BIl4Z9EIQ== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:30 +0100 Subject: [PATCH RFC 14/41] debugfs: 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-v1-14-4c998976c6c7@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=1035; i=brauner@kernel.org; h=from:subject:message-id; bh=MkToblHF88kh8NI/b687M2tj3J3ly45eToQK3A7xE2E=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWR9erDEXWDJqs8a6Uaz4h5pdum8snm92LRlGYv8/rrdx ++tihfu7yhlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZjIXgeG/7nTnxz5dOX1QYaX PAb8ovMeP3CTevdb7d/7G5YRbf0/Nn1l+O/6l1t14a8Lqh23G9cePX75b+SKyohL6acucmz+3vh s+zYeAA== X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Initialize debugfs as a pseudo filesystem. This raises SB_I_PSEUDO and also SB_I_NOEXEC and SB_I_NODEV. debugfs never holds executables or device nodes. SB_I_NOEXEC also refuses PROT_EXEC mappings. The debugfs files that can be mapped, kcov, relay channels and powernv's memtrace, map data. Signed-off-by: Christian Brauner (Amutable) --- fs/debugfs/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index b4915551ad31..f163f0bc5703 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -317,6 +318,7 @@ static int debugfs_init_fs_context(struct fs_context *fc) fsi->mode = DEBUGFS_DEFAULT_MODE; fc->s_fs_info = fsi; + fc_init_pseudo(fc); fc->ops = &debugfs_context_ops; return 0; } -- 2.53.0