3d69baf3a4b34397086f00297485ff85c7a16171
[openwrt/svn-archive/archive.git] / package / base-files / files / lib / preinit / 30_failsafe_wait
1 #!/bin/sh
2 # Copyright (C) 2006-2010 OpenWrt.org
3 # Copyright (C) 2010 Vertical Communications
4
5 fs_wait_for_key () {
6 local timeout=$3
7 local timer
8 local do_keypress
9 local keypress_true="$(mktemp)"
10 local keypress_wait="$(mktemp)"
11 local keypress_sec="$(mktemp)"
12 if [ -z "$keypress_wait" ]; then
13 keypress_wait=/tmp/.keypress_wait
14 touch $keypress_wait
15 fi
16 if [ -z "$keypress_true" ]; then
17 keypress_true=/tmp/.keypress_true
18 touch $keypress_true
19 fi
20 if [ -z "$keypress_sec" ]; then
21 keypress_sec=/tmp/.keypress_sec
22 touch $keypress_sec
23 fi
24
25 trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" INT
26 trap "echo 'true' >$keypress_true; lock -u $keypress_wait ; rm -f $keypress_wait" USR1
27
28 [ -n "$timeout" ] || timeout=1
29 [ $timeout -ge 1 ] || timeout=1
30 timer=$timeout
31 lock $keypress_wait
32 {
33 while [ $timer -gt 0 ]; do
34 echo "$timer" >$keypress_sec
35 timer=$(($timer - 1))
36 sleep 1
37 done
38 lock -u $keypress_wait
39 rm -f $keypress_wait
40 } &
41
42 echo "Press the [$1] key and hit [enter] $2"
43 echo "Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level"
44 # if we're on the console we wait for input
45 {
46 while [ -r $keypress_wait ]; do
47 timer="$(cat $keypress_sec)"
48
49 [ -n "$timer" ] || timer=1
50 timer="${timer%%\ *}"
51 [ $timer -ge 1 ] || timer=1
52 do_keypress=""
53 {
54 read -t "$timer" do_keypress
55 case "$do_keypress" in
56 $1)
57 echo "true" >$keypress_true
58 ;;
59 1 | 2 | 3 | 4)
60 echo "$do_keypress" >/tmp/debug_level
61 ;;
62 *)
63 continue;
64 ;;
65 esac
66 lock -u $keypress_wait
67 rm -f $keypress_wait
68 }
69 done
70 }
71 lock -w $keypress_wait
72
73 keypressed=1
74 [ "$(cat $keypress_true)" = "true" ] && keypressed=0
75
76 rm -f $keypress_true
77 rm -f $keypress_wait
78 rm -f $keypress_sec
79
80 return $keypressed
81 }
82
83 failsafe_wait() {
84 FAILSAFE=
85 grep -q 'failsafe=' /proc/cmdline && FAILSAFE=true && export FAILSAFE
86 if [ "$FAILSAFE" != "true" ]; then
87 pi_failsafe_net_message=true
88 preinit_net_echo "Please press button now to enter failsafe"
89 pi_failsafe_net_message=false
90 fs_wait_for_key f 'to enter failsafe mode' $fs_failsafe_wait_timeout && FAILSAFE=true
91 [ -f "/tmp/failsafe_button" ] && FAILSAFE=true && echo "- failsafe button "`cat /tmp/failsafe_button`" was pressed -"
92 [ "$FAILSAFE" = "true" ] && export FAILSAFE && touch /tmp/failsafe
93 fi
94 }
95
96 boot_hook_add preinit_main failsafe_wait