rc.subr revision 1.9 
1#	$NetBSD: rc.subr,v 1.9 1999/04/28 23:32:29 nathanw Exp $
2# functions used by various rc scripts
3
4#
5# checkyesno
6#	Test $1 variable, and warn if not set to YES or NO.
7#	return 0 if it's "yes" (et al), nonzero otherwise
8#
9checkyesno() {
10	eval value=\$${1}
11	case $value in
12
13		#	"yes", "true", "on", or "1"
14	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
15		return 0
16		;;
17
18		#	"no", "false", "off", or "0"
19	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
20		return 1
21		;;
22
23	*)
24		logger -s "WARNING: \$${1} is not set properly."
25		return 1
26		;;
27	esac
28}
29
30#
31# mount_critical_filesystems
32#	Go through the list of critical filesystems, checking each one
33#	to see if it is mounted, and if it is not, mounting it.
34#
35fstab=/etc/fstab
36mount_critical_filesystems() {
37	for fs in $critical_filesystems; do
38		if [ $1 = local ] && ! islocalfs $fs; then
39			continue
40		fi
41		mount | (
42			ismounted=no
43			while read what _on on _type type; do
44				if [ $on = $fs ]; then
45					ismounted=yes
46				fi
47			done
48			if [ $ismounted = no ]; then 
49				mount $fs >/dev/null 2>&1
50			fi
51		)  
52	done
53}
54
55islocalfs() {
56	if [ -z "$1" ]; then
57		echo 'islocalfs() called with no fs argument: aborting.'
58		exit 3
59	fi
60	while read dev dir type opts; do
61		if [ "$1" = "$dir" ]; then
62			case $type in
63				# Local filesystems.
64				ados|cd9660|ext2fs|fdesc|ffs) return 0;;
65				filecore|kernfs|lfs|mfs|msdos|null) return 0;;
66				portal|procfs|ufs|umap|union) return 0;;
67				# Network filesystems
68				nfs) return 1;;
69				# If we don't know, err on the safe side
70				# and assume it's a network FS.
71				*) return 1;;
72			esac
73		fi
74	done < $fstab
75	# Quietly ignore not-found filesystems.
76	return 1;
77}
78