xref: /netbsd/etc/rc.d/named (revision 6550d01e) 
1#!/bin/sh
2#
3# $NetBSD: named,v 1.22 2009/08/03 17:45:48 perry Exp $
4#
5
6# PROVIDE: named
7# REQUIRE: NETWORKING mountcritremote syslogd
8# BEFORE:  DAEMON
9# KEYWORD: chrootdir
10
11$_rc_subr_loaded . /etc/rc.subr
12
13name="named"
14rcvar=$name
15command="/usr/sbin/${name}"
16pidfile="/var/run/${name}/${name}.pid"
17start_precmd="named_precmd"
18extra_commands="reload"
19required_dirs="$named_chrootdir"	# if it is set, it must exist
20
21named_migrate()
22{
23	local src=$1
24	local dst=$2$1
25	echo "Migrating $src to $dst"
26(
27	diff=false
28	cd $src
29	for f in $(find . -type f)
30	do
31		f=${f##./}
32		case $f in
33		*/*)
34			d=$dst/$(dirname $f)
35			;;
36		*)	d=$dst
37			;;
38		esac
39		mkdir -p $d
40		if [ -r "$dst/$f" ]
41		then
42			if ! cmp $f $dst/$f; then
43				diff=true
44			fi
45		else
46			cp -p $f $dst/$f
47		fi
48	done
49	if $diff; then
50		echo "Cannot complete migration because files are different"
51		echo "Run 'diff -r $src $dst' resolve the differences"
52	else
53		rm -fr $src
54		ln -s $dst $src
55	fi
56)
57}
58
59named_precmd()
60{
61	if [ -z "$named_chrootdir" ]; then
62		return 0;
63	fi
64
65	# If running in a chroot cage, ensure that the appropriate files
66	# exist inside the cage, as well as helper symlinks into the cage
67	# from outside.
68	#
69	# As this is called after the is_running and required_dir checks
70	# are made in run_rc_command(), we can safely assume ${named_chrootdir}
71	# exists and named isn't running at this point (unless forcestart
72	# is used).
73	#
74	case "$($command -v)" in
75	BIND*)	# 9 no group, named-xfer, or ndc
76		;;
77	named*)	# 4 and 8
78		rc_flags="-g named $rc_flags"
79		if [ ! -x "${named_chrootdir}/usr/libexec/named-xfer" -o \
80		    "${named_chrootdir}/usr/libexec/named-xfer" -ot \
81		    /usr/libexec/named-xfer ]; then
82			rm -f "${named_chrootdir}/usr/libexec/named-xfer"
83			cp -p /usr/libexec/named-xfer \
84			    "${named_chrootdir}/usr/libexec"
85		fi
86		ln -fs "${named_chrootdir}/var/run/ndc" /var/run/ndc
87		;;
88	esac
89
90	for i in null random
91	do
92		if [ ! -c "${named_chrootdir}/dev/$i" ]; then
93			rm -f "${named_chrootdir}/dev/$i"
94			(cd /dev &&
95			    /bin/pax -rw -pe "$i" "${named_chrootdir}/dev")
96		fi
97	done
98
99	if [ ! -h /etc/namedb ]; then
100		named_migrate /etc/namedb ${named_chrootdir}
101	fi
102	if [ \( -r /etc/named.conf \) -a \( ! -h /etc/named.conf \) -a \
103	     \( ! -r ${named_chrootdir}/etc/named.conf \) ]
104	then
105		mv /etc/named.conf ${named_chrootdir}/etc/named.conf
106		ln -s ${named_chrootdir}/etc/named.conf /etc/named.conf
107	fi
108	if [ \( ! -r ${named_chrootdir}/etc/named.conf \) -a \
109	    \( -r ${named_chrootdir}/etc/namedb/named.conf \) ]; then
110		ln -s namedb/named.conf ${named_chrootdir}/etc
111	fi
112
113	if [ -f /etc/localtime ]; then
114		cmp -s /etc/localtime "${named_chrootdir}/etc/localtime" || \
115		    cp -p /etc/localtime "${named_chrootdir}/etc/localtime"
116	fi
117
118	local piddir="$(dirname "${pidfile}")"
119	mkdir -p "${named_chrootdir}${piddir}" "${piddir}"
120	chmod 755 "${named_chrootdir}${piddir}" "${piddir}"
121	chown named:named "${named_chrootdir}${piddir}" "${piddir}"
122	ln -fs "${named_chrootdir}${pidfile}" "${pidfile}"
123
124	#	Change run_rc_commands()'s internal copy of $named_flags
125	#
126	rc_flags="-u named -t ${named_chrootdir} $rc_flags"
127}
128
129load_rc_config $name
130run_rc_command "$1"
131