]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - etc/rc.d/nsswitch
merge fix for boot-time hang on centos' xen
[FreeBSD/FreeBSD.git] / etc / rc.d / nsswitch
1 #!/bin/sh
2 #
3 # Copyright (c) 1993 - 2004 The FreeBSD Project. All rights reserved.
4 #
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
7 # are met:
8 # 1. Redistributions of source code must retain the above copyright
9 #    notice, this list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright
11 #    notice, this list of conditions and the following disclaimer in the
12 #    documentation and/or other materials provided with the distribution.
13 #
14 # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 # ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
18 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 # SUCH DAMAGE.
25 #
26 # $FreeBSD$
27 #
28
29 # PROVIDE: nsswitch
30 # REQUIRE: root
31 # BEFORE:  NETWORK
32
33 . /etc/rc.subr
34
35 name="nsswitch"
36 start_cmd="nsswitch_start"
37 stop_cmd=":"
38
39 convert_host_conf()
40 {
41     host_conf=$1; shift;
42     nsswitch_conf=$1; shift;
43
44     while read line; do
45         line=${line##[  ]}
46         case $line in
47         hosts|local|file)
48                 _nsswitch="${_nsswitch}${_nsswitch+ }files"
49                 ;;
50         dns|bind)
51                 _nsswitch="${_nsswitch}${_nsswitch+ }dns"
52                 ;;
53         nis)
54                 _nsswitch="${_nsswitch}${_nsswitch+ }nis"
55                 ;;
56         '#'*)
57                 ;;
58         *)
59                 printf "Warning: unrecognized line [%s]", $line > "/dev/stderr"
60                 ;;
61                 
62         esac
63     done < $host_conf
64
65     echo "hosts: $_nsswitch" > $nsswitch_conf
66 }
67
68 generate_nsswitch_conf()
69 {
70     nsswitch_conf=$1; shift;
71
72     cat >$nsswitch_conf <<EOF
73 group: compat
74 group_compat: nis
75 hosts: files dns
76 networks: files
77 passwd: compat
78 passwd_compat: nis
79 shells: files
80 EOF
81 }
82
83 generate_host_conf()
84 {
85     local _cont _sources
86
87     nsswitch_conf=$1; shift;
88     host_conf=$1; shift;
89
90     _cont=0
91     _sources=""
92     while read line; do
93         line=${line##[  ]}
94         case $line in
95         hosts:*)
96                 ;;
97         *)
98                 if [ $_cont -ne 1 ]; then
99                         continue
100                 fi
101                 ;;
102         esac
103         if [ "${line%\\}" = "${line}\\" ]; then
104                 _cont=1
105         fi
106         line=${line#hosts:}
107         line=${line%\\}
108         line=${line%%#*}
109         _sources="${_sources}${_sources:+ }$line"
110     done < $nsswitch_conf
111
112     echo "# Auto-generated from nsswitch.conf, do not edit" > $host_conf
113     for _s in ${_sources}; do
114         case $_s in
115         files)
116                 echo "hosts" >> $host_conf
117                 ;;
118         dns)
119                 echo "dns" >> $host_conf
120                 ;;
121         nis)
122                 echo "nis" >> $host_conf
123                 ;;
124         *=*)
125                 ;;
126         *)
127                 printf "Warning: unrecognized source [%s]", $_s > "/dev/stderr"
128                 ;;
129         esac
130     done
131 }
132
133 nsswitch_start()
134 {
135         # Convert host.conf to nsswitch.conf if necessary
136         #
137         if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
138                 echo ''
139                 echo 'Warning: /etc/host.conf is no longer used'
140                 echo '  /etc/nsswitch.conf will be created for you'
141                 convert_host_conf /etc/host.conf /etc/nsswitch.conf
142         fi
143
144         # Generate default nsswitch.conf if none exists
145         #
146         if [ ! -f "/etc/nsswitch.conf" ]; then
147                 echo 'Generating nsswitch.conf.'
148                 generate_nsswitch_conf /etc/nsswitch.conf
149         fi
150
151         # Generate host.conf for compatibility
152         #
153         if [ ! -f "/etc/host.conf" -o \
154                 "/etc/host.conf" -ot "/etc/nsswitch.conf" ]
155         then
156                 echo 'Generating host.conf.'
157                 generate_host_conf /etc/nsswitch.conf /etc/host.conf
158         fi
159
160 }
161
162 load_rc_config $name
163 run_rc_command "$1"