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=1794661635; b=1u0D05rCRCapDuIdEfQuXOpbswDbcy/gRdv7q29+85g+RK3w2XOTkk/zBh9O04/qyYEa wIz0dKHfy5BGAFwpeMAPStYFkXvdxxgI9LaNcaSIyIaIjDhWdrOfoTUMVre2Smha8iJnN h9Yh62Zlej9s/5piKgs72xUu7pyo37NPjfwiW/Sfdz5AM6XtNU7S58gqm7gdWZ02rbfKT vRDytmGK+nFkU+P8oZz79NOGhb0/PQp6YkZkBWE45sDlMEvF+RoymiL/urZ0+FPBQqXYt 4eVqOS9auhuH68Iji3C9uLvINgifgOFSEztc0Z7xYSbAqUlxm1enaZC4Xj1Wq+gKlbg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794661635; 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=J9s+j/qnomdsSfV9A9X1jZ68ytQ1y88uXgL9lPJcnQQ=; b=tRJ8Xlp1S6Oweu7TuCeFpRAASGSFEm9klewpp1WkuhkwYOMu0SFHQQOv/uQ1J+MSUib9 Q/sZSKM35gxdsO+nyd95CApyp0iEurqnpewfEt/LugK9kv6FuP05dhfexBdHXTggpt9Dq WrKxHxM2t0Q/OVfKAFElFieQn1F0DzAVvhbOiHprBiBjCPJkf75bYIJa2QWPAzaTpk0pR PnkfjRyFtZ1NpSshzaGppiG4AoOP7e8n5YnSpsW4Wp3Ya0rdtwmFlTSVpYNBblf4u1dGX mUO+PxHoWDcO+cN2GbpQ47uIhWC+bp9LUsV+/PAECEjhW0AoIPUdKUST7Qokj0KJ6Vg== 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=ZBduMUGq; 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 8A16B606E0FD; Sat, 14 Nov 2026 13:07:15 +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=ZBduMUGq Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8CB521F000C4; Sat, 14 Nov 2026 13:07:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794661635; bh=J9s+j/qnomdsSfV9A9X1jZ68ytQ1y88uXgL9lPJcnQQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=ZBduMUGqp/qi5659mADzFX9+8wf4kVV3NEMIvBS9gKHs6MAUqEHt8cBzj3ZNgbS6d Nf89OZFMZUZCn2jJ6Mafo9wRMxG9W4SB0eAJp1Mg0VKarsMFlGa9zj428VS1a+b0RY D6CTCLMwH/+Gy7FwbJfcjx3qkCoh6LyEfI7rfX1ekkbjm/2l1cn+9zhnqWbhtfdgam Y+PAnxkHWZsnELKY9cqaxrXaHDYmDIwyumXSSeFQKPXZI1w6p3YqMu2+y/31W4BSbI KTWrP3vhpbirbRroyDnQuVG/W+XGJp6QhDHB9PqcU/GjF+Dz5Sq3c8cIAzqE/bRgNS ehuHrQrWIS4kA== From: Christian Brauner Date: Sat, 14 Nov 2026 14:01:55 +0100 Subject: [PATCH RFC v2 14/42] debugfs: use fc_init_pseudo() X-Mailing-List: driver-core@lists.linux.dev 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: <20261114-work-loop-pseudo-v2-14-98639a2286fb@kernel.org> References: <20261114-work-loop-pseudo-v2-0-98639a2286fb@kernel.org> In-Reply-To: <20261114-work-loop-pseudo-v2-0-98639a2286fb@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)" , Alexander Mikhalitsyn X-Mailer: b4 0.17-dev-ce4c1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1131; i=brauner@kernel.org; h=from:subject:message-id; bh=LYVXsmqnxJmzP/zdkj81mpuZ8VVR49+0Ejm2rZDTrDA=; b=kA0DAAoWkcYbwGV43KIByyZiAGr4XHWh3hAo/8SIEYNT/j2jncgmX+7HWMmgK6bgfx63CtOSR oh1BAAWCgAdFiEEQIc0Vx6nDHizMmkokcYbwGV43KIFAmr4XHUACgkQkcYbwGV43KJ5WQEAzj30 a+DH4tqF+HU88MmhFrWuShGbUZ/WYvxekVK9nkMBAMzhgdjjYON010GwrBYO16UXD9hyZA5dodO zboH1iSQL 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. Reviewed-by: Jan Kara Reviewed-by: Alexander Mikhalitsyn 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 b4915551ad315..f163f0bc5703a 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