aboutsummaryrefslogtreecommitdiff
path: root/init.d/sysfs.in
blob: 114a6530526192fc157b7a2e7881bb2b9a336b02 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
#!@SBINDIR@/runscript
# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.

description="Mount the sys filesystem."

sysfs_opts=nodev,noexec,nosuid

depend()
{
	keyword -lxc -prefix -vserver
}

mount_sys()
{
	grep -Eq "[[:space:]]+sysfs$" /proc/filesystems || return 1
	mountinfo -q /sys && return 0

	if [ ! -d /sys ]; then
		if ! mkdir -m 0755 /sys; then
			ewarn "Could not create /sys!"
			return 1
		fi
	fi

	ebegin "Mounting /sys"
	if ! fstabinfo --mount /sys; then
		mount -n -t sysfs -o ${sysfs_opts} sysfs /sys
	fi
	eend $?
}

mount_misc()
{
	# Setup Kernel Support for securityfs
	if [ -d /sys/kernel/security ] && \
		! mountinfo -q /sys/kernel/security; then
		if grep -qs securityfs /proc/filesystems; then
			ebegin "Mounting security filesystem"
			mount -n -t securityfs -o ${sysfs_opts} \
				securityfs /sys/kernel/security
			eend $?
		fi
	fi

	# Setup Kernel Support for debugfs
	if [ -d /sys/kernel/debug ] && ! mountinfo -q /sys/kernel/debug; then
		if grep -qs debugfs /proc/filesystems; then
			ebegin "Mounting debug filesystem"
			mount -n -t debugfs -o ${sysfs_opts} debugfs /sys/kernel/debug
			eend $?
		fi
	fi

	# Setup Kernel Support for configfs
	if [ -d /sys/kernel/config ] && ! mountinfo -q /sys/kernel/config; then
		if grep -qs configfs /proc/filesystems; then
			ebegin "Mounting config filesystem"
			mount -n -t configfs -o  ${sysfs_opts} configfs /sys/kernel/config
			eend $?
		fi
	fi

	# set up kernel support for cgroups
	if [ -d /sys/fs/cgroup ] && ! mountinfo -q /sys/fs/cgroup; then
		if grep -qs cgroup /proc/filesystems; then
			ebegin "Mounting cgroup filesystem"
			local opts="${sysfs_opts},mode=755,size=${rc_cgroupsize:-10m}"
			mount -n -t tmpfs -o ${opts} cgroup_root /sys/fs/cgroup
			eend $?
		fi
	fi

	# set up kernel support for fusectl
	if [ -d /sys/fs/fuse/connections ] \
		&& ! mountinfo -q /sys/fs/fuse/connections; then
		if grep -qs fusectl /proc/filesystems; then
			ebegin "Mounting fuse control filesystem"
			mount -n -t fusectl -o ${sysfs_opts} \
				fusectl /sys/fs/fuse/connections
			eend $?
		fi
	fi
}

mount_cgroups()
{
		mountinfo -q /sys/fs/cgroup || return 0

	local agent="@LIBEXECDIR@/sh/cgroup-release-agent.sh"
	mkdir /sys/fs/cgroup/openrc
	mount -n -t cgroup \
		-o none,${sysfs_opts},name=openrc,release_agent="$agent" \
		openrc /sys/fs/cgroup/openrc
	echo 1 > /sys/fs/cgroup/openrc/notify_on_release

	yesno ${rc_controller_cgroups:-YES} && [ -e /proc/cgroups ] || return 0
	while read name hier groups enabled rest; do
		case "${enabled}" in
			1)	mkdir /sys/fs/cgroup/${name}
				mount -n -t cgroup -o ${sysfs_opts},${name} \
					${name} /sys/fs/cgroup/${name}
				;;
		esac
	done < /proc/cgroups
}

start()
{
	local retval
	mount_sys
	retval=$?
	if [ $retval -eq 0 ]; then
		mount_misc
		retval=$?
	fi
	if [ $retval -eq 0 ]; then
		mount_cgroups
		retval=$?
	fi
	return $retval
}