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=1794302199; b=Y5rYSj1XLZZ766NZHDQasr6JuyC35uwPL+y3ULzW+nyy5yAqlUtXGBo13b6jS8pfYjln Ml1prBTA93DzorTP4h8b5xbBNsVE2P4k17Ydv1J5RsZ3TG6bV81BpDnci2UszymScYeGg fnZ377kAC2kM/c7vd2W5qmUjy3gtTv1BjdwZAcjIRXDLxzk6G/zdzzuIg+z2qeHOzUAMX EkzLGehNgeVGKOGjG9xB65mY6sTLH68z0HqsC5X6d3/ePaaDSeCvLyssCO6ILfHbWBOf3 dKAlE3fRKclDnhL8sT0gisf5It+rL1bf2PN4lUAGHiu1qLQb2HX8aVDajR6qlcOQ1Gg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794302199; 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=mLVLyIpRLrs15SgdOEdgXbdYk/BZhN4swU0iCuBOyic=; b=AVgIaSbRI5rLF69ObaNN2gR2s1xmDQPDWBPu5rXYDIb1yQucrhR9/DXNKHHyRcf70SaT ZRgZsyqw6dWuRBXyBsDbm1NEAoJQJZYoW5UQaYychZaeIRwMbbmvAGpzJb0NX9Xgnvh46 CcQmz512PwbQSm9dTw7Tghvp+/EIXVjqJCGbJkQay6//XGv8Cq0OOCMtgAS7Og3Lu9Cat cc2ZFGmEyBnnW2tVOMXfdj1aDAmBf5JhaSVl8i8sQwNxzAXB3+UJV/CeKE60ZC4cwzAru oBw+MKr73oaeIQlR89ZRaR8VqJupkxGm1azUKk8fSjjkuqwHFXJLAsk44498gjo9+Qg== 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=IIsjfWUO; 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 D5CC8606B144; Tue, 10 Nov 2026 09:16:38 +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=IIsjfWUO Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4050E1F008A1; Tue, 10 Nov 2026 09:16:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794302198; bh=mLVLyIpRLrs15SgdOEdgXbdYk/BZhN4swU0iCuBOyic=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=IIsjfWUOtMl2CEA++5Jt8EWp6KRTI2HXcARdUBvCdmTdKWE1uX1aMYAXg8Ea/e8Ql Xql4YvlNPt9K9QrXupja0AV8uGJ4ZeQk3gDHw7i85Y4EbqZiDD29w/gu3h4vBD1pOY iAVha3oPB1bPlmff69yHag/xubD/tLzqQTssa1t0tgnGT7QGrFnYsIwcF9XMVmtUiW K1WSiuD3LOVOs5EqoSIS8TpSROn1Jiuyybk5PLeAHpwhWS+d9EjZQcuJHs/HljUe2V MtagQG38QZOlSaCBeycYDsPJbjUtRGiQhZJCiEt9y8RKsVtp69sly7RCCFqaYz3x8K aiwArWlZiPSgQ== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:22 +0100 Subject: [PATCH RFC 06/41] proc: 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-v1-6-4c998976c6c7@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=1267; i=brauner@kernel.org; h=from:subject:message-id; bh=gjYrjHbn+wcxnIFNb/oa4teQqFEsQIh0Sk5lJ439ovI=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWR9ejD77u+nlaqnLf4kFGhsen2irk6irPw3z+y/Bi4hN TdYuKQPdpSyMIhxMciKKbI4tJuEyy3nqdhslKkBM4eVCWQIAxenAExEgY/hJ+PsE4F/232+vH/y jeuV3N6zU727BJZKTjAty7kdyLHqgSYjw3K5k6+bop64Mr3ov9715vvhKE+JtjurFy9306rKeaY hyQYA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Initialize procfs as a pseudo filesystem instead of raising SB_I_NOEXEC and SB_I_NODEV by hand. This adds SB_I_PSEUDO. Signed-off-by: Christian Brauner (Amutable) --- fs/proc/root.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/proc/root.c b/fs/proc/root.c index 7fbbe92bf73a..ca0e75081934 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -265,8 +266,6 @@ static int proc_fill_super(struct super_block *s, struct fs_context *fc) if (ret) return ret; - /* User space would break if executables or devices appear on proc */ - s->s_iflags |= SB_I_NOEXEC | SB_I_NODEV; s->s_flags |= SB_NODIRATIME | SB_NOSUID | SB_NOEXEC; s->s_blocksize = 1024; s->s_blocksize_bits = 10; @@ -350,6 +349,7 @@ static int proc_init_fs_context(struct fs_context *fc) put_user_ns(fc->user_ns); fc->user_ns = get_user_ns(ctx->pid_ns->user_ns); fc->fs_private = ctx; + fc_init_pseudo(fc); fc->ops = &proc_fs_context_ops; return 0; } -- 2.53.0