This patch re-adds the udev and hotplug2 initialization fixes originally
[openwrt/svn-archive/archive.git] / package / base-files / files / etc / preinit
1 #!/bin/sh
2 # Copyright (C) 2006 OpenWrt.org
3 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
4 . /etc/diag.sh
5
6 failsafe_ip() {
7 ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
8 }
9
10 failsafe() {
11 [ -n "$ifname" ] && grep "$ifname" /proc/net/dev >/dev/null && {
12 failsafe_ip
13 netmsg 192.168.1.255 "Entering Failsafe!"
14 telnetd -l /bin/login <> /dev/null 2>&1
15 }
16 lock /tmp/.failsafe
17 ash --login
18 }
19
20 mount proc /proc -t proc
21 mount sysfs /sys -t sysfs
22
23 size=$(awk '/MemTotal:/ {l=5242880;mt=($2*1024);print((s=mt/2)<l)?mt-l:s}' /proc/meminfo)
24 mount tmpfs /tmp -t tmpfs -o size=$size,nosuid,nodev,mode=1777
25
26 if grep devfs /proc/filesystems > /dev/null; then
27 mount devfs /dev -t devfs
28 M0=/dev/pty/m0
29 M1=/dev/pty/m1
30 HOTPLUG=/sbin/hotplug-call
31
32 elif [ -x /sbin/hotplug ]; then
33 mount -t tmpfs tmpfs /dev -o size=512K
34 mknod /dev/console c 5 1
35 /sbin/hotplug2 --coldplug --set-rules-file /etc/hotplug2-init.rules
36 /sbin/hotplug2 --no-coldplug --persistent --set-rules-file /etc/hotplug2-init.rules &
37 M0=/dev/ptmx
38 M1=/dev/ptmx
39 HOTPLUG=
40
41 elif [ -x /sbin/udevd ]; then
42 mount -n -t tmpfs -o mode=0755 udev /dev
43 /sbin/udevd --daemon
44 /sbin/udevtrigger
45 /sbin/udevsettle
46 M0=/dev/pty/ptmx
47 M1=/dev/pty/ptmx
48 HOTPLUG=
49 fi
50
51 mkdir -p /dev/pts /dev/shm
52 mount devpts /dev/pts -t devpts
53
54 # the shell really doesn't like having stdin/out closed
55 # that's why we use /dev/pty/m0 and m1 as replacement
56 # for /dev/console if there's no serial console available
57 dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
58 M0=/dev/console
59 M1=/dev/console
60 }
61
62 exec <$M0 >$M1 2>&0
63
64 echo "- preinit -"
65 trap 'FAILSAFE=true' USR1
66 [ -e /etc/preinit.arch ] && . /etc/preinit.arch
67 set_state preinit
68 echo "$HOTPLUG" > /proc/sys/kernel/hotplug
69 eval ${FAILSAFE:+failsafe}
70 lock -w /tmp/.failsafe
71
72 if [ -z "$INITRAMFS" ]; then
73 mount_root
74 [ -f /sysupgrade.tgz ] && {
75 echo "- config restore -"
76 cd /
77 mv sysupgrade.tgz /tmp
78 tar xzf /tmp/sysupgrade.tgz
79 rm -f /tmp/sysupgrade.tgz
80 sync
81 }
82
83 echo "- init -"
84
85 killall hotplug2
86 exec /sbin/init
87 fi