summaryrefslogtreecommitdiff
blob: bdee10cc61e8daadcf5c07ac37233ca26c29d159 (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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
#!/sbin/openrc-run
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

extra_commands="checkconfig checkzones"
extra_started_commands="reload"

depend() {
	need net
	use logger
	provide dns
}

NAMED_CONF=${NAMED_CONF:-${CHROOT}/etc/bind/named.conf}

OPENSSL_LIBGOST=${OPENSSL_LIBGOST:-0}
MOUNT_CHECK_TIMEOUT=${MOUNT_CHECK_TIMEOUT:-60}

_mount() {
	local from
	local to
	local opts
	local ret=0

	if [ "${#}" -lt 3 ]; then
		eerror "_mount(): to few arguments"
		return 1
	fi

	from=$1
	to=$2
	shift 2

	opts="${*}"
	shift $#

	if [ -z "$(awk "\$2 == \"${to}\" { print \$2 }" /proc/mounts)" ]; then
		einfo "mounting ${from} to ${to}"
		mount ${from} ${to} ${opts}
		ret=$?

		eend $ret
		return $ret
	fi

	return 0
}

_umount() {
	local dir=$1
	local ret=0

	if [ -n "$(awk "\$2 == \"${dir}\" { print \$2 }" /proc/mounts)" ]; then
		ebegin "umounting ${dir}"
		umount ${dir}
		ret=$?

		eend $ret
		return $ret
	fi

	return 0
}

_get_pidfile() {
	# as suggested in bug #107724, bug 335398#c17
	[ -n "${PIDFILE}" ] || PIDFILE=${CHROOT}$(\
			/usr/sbin/named-checkconf -p ${CHROOT:+-t} ${CHROOT} ${NAMED_CONF#${CHROOT}} | grep 'pid-file' | cut -d\" -f2)
	[ -z "${PIDFILE}" ] && PIDFILE=${CHROOT}/run/named/named.pid
}

check_chroot() {
	if [ -n "${CHROOT}" ]; then
		[ ! -d "${CHROOT}" ] && return 1
		[ ! -d "${CHROOT}/dev" ] || [ ! -d "${CHROOT}/etc" ] || [ ! -d "${CHROOT}/var" ] && return 1
		[ ! -d "${CHROOT}/run" ] || [ ! -d "${CHROOT}/var/log" ] && return 1
		[ ! -d "${CHROOT}/etc/bind" ] || [ ! -d "${CHROOT}/var/bind" ] && return 1
		[ ! -d "${CHROOT}/var/log/named" ] && return 1
		[ ! -c "${CHROOT}/dev/null" ] || [ ! -c "${CHROOT}/dev/zero" ] && return 1
		[ "${CHROOT_GEOIP:-0}" -eq 1 ] && [ ! -d "${CHROOT}/usr/share/GeoIP" ] && return 1
		if [ ${OPENSSL_LIBGOST:-0} -eq 1 ]; then
			if [ -d "/usr/lib64" ]; then
				[ ! -d "${CHROOT}/usr/lib64/engines" ] && return 1
			elif [ -d "/usr/lib" ]; then
				[ ! -d "${CHROOT}/usr/lib/engines" ] && return 1
			fi
		fi
	fi

	return 0
}

checkconfig() {
	ebegin "Checking named configuration"

	if [ ! -f "${NAMED_CONF}" ] ; then
		eerror "No ${NAMED_CONF} file exists!"
		return 1
	fi

	/usr/sbin/named-checkconf ${CHROOT:+-t} ${CHROOT} ${NAMED_CONF#${CHROOT}} || {
		eerror "named-checkconf failed! Please fix your config first."
		return 1
	}

	eend 0
	return 0
}

checkzones() {
	ebegin "Checking named configuration and zones"
	/usr/sbin/named-checkconf -z -j ${CHROOT:+-t} ${CHROOT} ${NAMED_CONF#${CHROOT}}
	eend $?
}

start() {
	local piddir

	ebegin "Starting ${CHROOT:+chrooted }named"

	if [ -n "${CHROOT}" ]; then
		if [ ${CHROOT_NOCHECK:-0} -eq 0 ]; then
			check_chroot || {
				eend 1
				eerror "Your chroot dir ${CHROOT} is inconsistent, please run 'emerge --config net-dns/bind' first"
				return 1
			}
		fi

		if [ ${OPENSSL_LIBGOST:-0} -eq 1 ]; then
			if [ ! -e /usr/lib/engines/libgost.so ]; then
				eend 1
				eerror "Couldn't find /usr/lib/engines/libgost.so but bind has been built with openssl and libgost support"
				return 1
			fi
			cp -Lp /usr/lib/engines/libgost.so "${CHROOT}/usr/lib/engines/libgost.so" || {
				eend 1
				eerror "Couldn't copy /usr/lib/engines/libgost.so into '${CHROOT}/usr/lib/engines/'"
				return 1
			}
		fi
		cp -Lp /etc/localtime "${CHROOT}/etc/localtime"

		if [ "${CHROOT_NOMOUNT:-0}" -eq 0 ]; then
			einfo "Mounting chroot dirs"
			_mount /etc/bind ${CHROOT}/etc/bind -o bind
			_mount /var/bind ${CHROOT}/var/bind -o bind
			_mount /var/log/named ${CHROOT}/var/log/named -o bind
			if [ "${CHROOT_GEOIP:-0}" -eq 1 ]; then
				_mount /usr/share/GeoIP ${CHROOT}/usr/share/GeoIP -o bind
			fi
		fi

		# On initial startup, if piddir inside the chroot /var/run/named
		# Then the .../var/run part might not exist yet
		checkpath -q -d -o root:root -m 0755 "${piddir}/.."
	fi

	checkconfig || { eend 1; return 1; }

	# create piddir (usually /run/named) if necessary, bug 334535
	_get_pidfile
	piddir="${PIDFILE%/*}"
	checkpath -q -d -o root:named -m 0770 "${piddir}" || {
		eerror "Failed to create PID directory at $piddir"
		eend 1
		return 1
	}

	# In case someone have $CPU set in /etc/conf.d/named
	if [ -n "${CPU}" ] && [ "${CPU}" -gt 0 ]; then
		CPU="-n ${CPU}"
	fi

	start-stop-daemon --start --pidfile ${PIDFILE} \
		--nicelevel ${NAMED_NICELEVEL:-0} \
		--exec /usr/sbin/named \
		-- -u named ${CPU} ${OPTIONS} ${CHROOT:+-t} ${CHROOT}
	eend $?
}

stop() {
	local reported=0

	ebegin "Stopping ${CHROOT:+chrooted }named"

	# Workaround for now, until openrc's restart has been fixed.
	# openrc doesn't care about a restart() function in init scripts.
	if [ "${RC_CMD}" = "restart" ]; then
		if [ -n "${CHROOT}" -a ${CHROOT_NOCHECK:-0} -eq 0 ]; then
			check_chroot || {
				eend 1
				eerror "Your chroot dir ${CHROOT} is inconsistent, please run 'emerge --config net-dns/bind' first"
				return 1
			}
		fi

		checkconfig || { eend 1; return 1; }
	fi

	# -R 10, bug 335398
	_get_pidfile
	start-stop-daemon --stop --retry 10 --pidfile $PIDFILE \
		--exec /usr/sbin/named

	if [ -n "${CHROOT}" ] && [ "${CHROOT_NOMOUNT:-0}" -eq 0 ]; then
		ebegin "Umounting chroot dirs"

		# just to be sure everything gets clean
		while fuser -s ${CHROOT} 2>/dev/null; do
			if [ "${reported}" -eq 0 ]; then
				einfo "Waiting until all named processes are stopped (max. ${MOUNT_CHECK_TIMEOUT} seconds)"
			elif [ "${reported}" -eq "${MOUNT_CHECK_TIMEOUT}" ]; then
				eerror "Waiting until all named processes are stopped failed!"
				eend 1
				break
			fi
			sleep 1
			reported=$((reported+1))
		done

		[ "${CHROOT_GEOIP:-0}" -eq 1 ] && _umount ${CHROOT}/usr/share/GeoIP
		_umount ${CHROOT}/etc/bind
		_umount ${CHROOT}/var/log/named
		_umount ${CHROOT}/var/bind
	fi

	eend $?
}

reload() {
	local ret

	ebegin "Reloading named.conf and zone files"

	checkconfig || { eend 1; return 1; }

	_get_pidfile
	if [ -n "${PIDFILE}" ]; then
		start-stop-daemon --pidfile $PIDFILE --signal HUP
		ret=$?
	else
		ewarn "Unable to determine the pidfile... this is"
		ewarn "a fallback mode. Please check your installation!"

		$RC_SERVICE restart
		ret=$?
	fi

	eend $ret
}