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#!@SBINDIR@/openrc-run
# Copyright (c) 2007-2015 The OpenRC Authors.
# See the Authors file at the top-level directory of this distribution and
# https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
#
# This file is part of OpenRC. It is subject to the license terms in
# the LICENSE file found in the top-level directory of this
# distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
# This file may not be copied, modified, propagated, or distributed
# except according to the terms contained in the LICENSE file.
description="Set up the /dev directory"
depend()
{
provide dev-mount
before dev
keyword -docker -prefix -systemd-nspawn -vserver
}
mount_dev()
{
local action conf_d_dir devfstype msg mountopts
action=--mount
conf_d_dir="${RC_SERVICE%/*/*}/conf.d"
msg=Mounting
# Some devices require exec, https://bugs.gentoo.org/92921
# Users with such requirements can use an fstab entry for /dev
mountopts="noexec,nosuid,mode=0755"
if yesno ${skip_mount_dev:-no} ; then
einfo "/dev will not be mounted due to user request"
return 0
fi
if mountinfo -q /dev; then
action=--remount
mountopts="remount,$mountopts"
msg=Remounting
fi
if fstabinfo -q /dev; then
ebegin "$msg /dev according to fstab"
fstabinfo -q $action /dev
eend $?
return 0
fi
if grep -q devtmpfs /proc/filesystems; then
devfstype=devtmpfs
mountopts="$mountopts,size=10M"
elif grep -q tmpfs /proc/filesystems; then
devfstype=tmpfs
mountopts="$mountopts,size=10M"
fi
if [ -n "$devfstype" ]; then
ebegin "$msg $devfstype on /dev"
mount -n -t $devfstype -o $mountopts dev /dev
eend $?
else
ewarn "This kernel does not have devtmpfs or tmpfs support, and there"
ewarn "is no entry for /dev in fstab."
ewarn "This means /dev will not be mounted."
ewarn "To avoid this message, set CONFIG_DEVTMPFS or CONFIG_TMPFS to y"
ewarn "in your kernel configuration or see ${conf_d_dir}/${RC_SVCNAME}"
fi
return 0
}
seed_dev()
{
# Seed /dev with some things that we know we need
if [ "${RC_SYS}" != LXC ]; then
# creating /dev/console, /dev/tty and /dev/tty1 to be able to write
# to $CONSOLE with/without bootsplash before udevd creates it
[ -c /dev/console ] || mknod -m 600 /dev/console c 5 1
[ -c /dev/tty1 ] || mknod -m 620 /dev/tty1 c 4 1
[ -c /dev/tty ] || mknod -m 666 /dev/tty c 5 0
# udevd will dup its stdin/stdout/stderr to /dev/null
# and we do not want a file which gets buffered in ram
[ -c /dev/null ] || mknod -m 666 /dev/null c 1 3
# so udev can add its start-message to dmesg
[ -c /dev/kmsg ] || mknod -m 660 /dev/kmsg c 1 11
fi
# extra symbolic links not provided by default
[ -e /dev/fd ] || ln -snf /proc/self/fd /dev/fd
[ -e /dev/stdin ] || ln -snf /proc/self/fd/0 /dev/stdin
[ -e /dev/stdout ] || ln -snf /proc/self/fd/1 /dev/stdout
[ -e /dev/stderr ] || ln -snf /proc/self/fd/2 /dev/stderr
[ -e /proc/kcore ] && ln -snf /proc/kcore /dev/core
# Mount required directories as user may not have them in /etc/fstab
for x in \
"mqueue /dev/mqueue 1777 ,nodev mqueue" \
"devpts /dev/pts 0755 ,gid=5,mode=0620 devpts" \
"tmpfs /dev/shm 1777 ,nodev,mode=1777 shm" \
; do
set -- $x
grep -Eq "[[:space:]]+$1$" /proc/filesystems || continue
mountinfo -q $2 && continue
if [ ! -d $2 ]; then
mkdir -m $3 -p $2 >/dev/null 2>&1 || \
ewarn "Could not create $2!"
fi
if [ -d $2 ]; then
ebegin "Mounting $2"
if ! fstabinfo --mount $2; then
mount -n -t $1 -o noexec,nosuid$4 $5 $2
fi
eend $?
fi
done
}
restorecon_dev()
{
if [ -x /sbin/restorecon ]; then
ebegin "Restoring SELinux contexts in /dev"
restorecon -rF /dev >/dev/null 2>&1
eend $?
fi
return 0
}
start()
{
mount_dev
seed_dev
restorecon_dev
return 0
}
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