systemd/units/sys-kernel-tracing.mount

#  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=Kernel Trace File System
Documentation=https://docs.kernel.org/trace/ftrace.html
Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
DefaultDependencies=no
ConditionVirtualization=!lxc
ConditionPathExists=/sys/kernel/tracing
ConditionCapability=CAP_SYS_RAWIO
Before=sysinit.target

[Mount]
What=tracefs
Where=/sys/kernel/tracing
Type=tracefs
Options=nosuid,nodev,noexec
license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 07:23:58 +03:00			`# SPDX-License-Identifier: LGPL-2.1-or-later`
units: add mount for tracefs Kernel 4.1 separated the tracing system from the debugfs, actual documentation already points to a different path that needs this new mount to exist. the old sysfs path will still be an automount in the debugfs, created by the kernel (for now). Signed-off-by: Norbert Lange <nolange79@gmail.com> 2020-02-21 17:08:13 +03:00			`#`
			`# 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=Kernel Trace File System`
tree-wide: link to docs.kernel.org for kernel documentation https://www.kernel.org/ links to https://docs.kernel.org/ for the documentation. See https://git.kernel.org/pub/scm/docs/kernel/website.git/commit/?id=ebc1c372850f249dd143c6d942e66c88ec610520 These URLs are shorter and nicer looking. 2022-07-04 17:26:30 +03:00			`Documentation=https://docs.kernel.org/trace/ftrace.html`
units: add mount for tracefs Kernel 4.1 separated the tracing system from the debugfs, actual documentation already points to a different path that needs this new mount to exist. the old sysfs path will still be an automount in the debugfs, created by the kernel (for now). Signed-off-by: Norbert Lange <nolange79@gmail.com> 2020-02-21 17:08:13 +03:00			`Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems`
			`DefaultDependencies=no`
units: Don't mount tracefs in LXC Mounting tracefs fails in unprivileged LXC containers and latest LXD (3.23) bind mounts tracefs already. Fixes https://github.com/lxc/lxd/issues/7059 2020-03-22 23:37:06 +03:00			`ConditionVirtualization=!lxc`
units: add mount for tracefs Kernel 4.1 separated the tracing system from the debugfs, actual documentation already points to a different path that needs this new mount to exist. the old sysfs path will still be an automount in the debugfs, created by the kernel (for now). Signed-off-by: Norbert Lange <nolange79@gmail.com> 2020-02-21 17:08:13 +03:00			`ConditionPathExists=/sys/kernel/tracing`
			`ConditionCapability=CAP_SYS_RAWIO`
			`Before=sysinit.target`

			`[Mount]`
			`What=tracefs`
			`Where=/sys/kernel/tracing`
			`Type=tracefs`
			`Options=nosuid,nodev,noexec`