systemd/units/dev-hugepages.mount
Lennart Poettering e76b3d4ed2 units: restrict hugepages fs a bit
suid binaries and device nodes should not be placed there, hence forbid
it.

Of all the API VFS we mount from PID 1 or via a unit file this one is
the only one where we didn't add MS_NODEV/MS_NOSUID. Let's address that,
since there's really no reason why device nodes or suid binaries would
be placed in hugetlbfs.
2023-04-27 12:28:50 +09:00

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SYSTEMD

# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=Huge Pages File System
Documentation=https://docs.kernel.org/admin-guide/mm/hugetlbpage.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
Before=sysinit.target
ConditionPathExists=/sys/kernel/mm/hugepages
ConditionCapability=CAP_SYS_ADMIN
ConditionVirtualization=!private-users
[Mount]
What=hugetlbfs
Where=/dev/hugepages
Type=hugetlbfs
Options=nosuid,nodev