1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
#!/bin/bash
#
# netconsole This loads the netconsole module with the configured parameters.
#
# chkconfig: - 50 50
# description: Initializes network console logging
# config: /etc/sysconfig/netconsole
#
# Copyright 2002 Red Hat, Inc.
#
# Based in part on a shell script by
# Andreas Dilger <adilger@turbolinux.com> Sep 26, 2001
PATH=/sbin:/usr/sbin:$PATH
RETVAL=0
SERVER_ADDRESS_RESOLUTION=
# Check that networking is up.
. /etc/sysconfig/network
# Source function library.
. /etc/rc.d/init.d/functions
# Default values
LOCALPORT=6666
DEV=
SYSLOGADDR=
SYSLOGPORT=514
SYSLOGMACADDR=
kernel=$(uname -r | cut -d. -f1-2)
usage ()
{
echo $"Usage: $0 {start|stop|status|restart|condrestart}" 1>&2
RETVAL=2
}
print_address_info ()
{
local host=$1
local route via target
route=$(LANG=C ip -o route get to $host/32)
[ -z "$DEV" ] && DEV=$(echo $route | sed "s|.* dev \([^ ]*\).*|\1|")
echo "DEV=$DEV"
echo "LOCALADDR=$(echo $route | sed "s|.* src \([^ ]*\).*|\1|")"
if [[ $route == *" via "* ]] ; then
via=$(echo $route | sed "s|.* via \([^ ]*\).*|\1|")
target=$via
else
target=$host
fi
if [ -z "$SYSLOGMACADDR" ]; then
arp=$(LANG=C /sbin/arping -f -c 1 -I $DEV $target 2>/dev/null | awk '/ reply from .*[.*]/ { print gensub(".* reply from .* \\[(.*)\\].*","\\1","G"); exit }')
[ -n "$arp" ] && echo "SYSLOGMACADDR=$arp"
fi
}
start ()
{
[ -f /etc/sysconfig/netconsole ] || exit 6
. /etc/sysconfig/netconsole
SYSLOGOPTS=
# syslogd server, if any
if [ -n "$SYSLOGADDR" ]; then
# IPv6 regex also covers 4to6, zero-compressed, and link-local addresses with zone-index addresses.
# It should also cover IPv4-embedded, IPv4-mapped, and IPv4-translated IPv6 addresses.
# Taken from: http://stackoverflow.com/a/17871737/3481531
IPv4_regex="^([0-9]{1,3}\.){3}[0-9]{1,3}$"
IPv6_regex="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$"
if ! [[ "$SYSLOGADDR" =~ $IPv4_regex ]] && ! [[ "$SYSLOGADDR" =~ $IPv6_regex ]]; then
# Use IPv4 by default:
SYSLOGADDR="$(LANG=C getent ahostsv4 $SYSLOGADDR 2> /dev/null)"
# Try IPv6 in case IPv4 resolution has failed:
if [[ $? -eq 2 ]]; then
SYSLOGADDR="$(LANG=C getent ahostsv6 $SYSLOGADDR 2> /dev/null)"
fi
if [[ $? -ne 0 ]]; then
echo $"Unable to resolve IP address specified in /etc/sysconfig/netconsole" 1>&2
exit 6
fi
SYSLOGADDR="$(echo "$SYSLOGADDR" | head -1 | cut --delimiter=' ' --fields=1)"
fi
fi
if [ -z "$SYSLOGADDR" ] ; then
echo $"Server address not specified in /etc/sysconfig/netconsole" 1>&2
exit 6
fi
eval $(print_address_info $SYSLOGADDR)
if [ -z "$SYSLOGMACADDR" ]; then
echo $"netconsole: can't resolve MAC address of $SYSLOGADDR" 1>&2
exit 1
fi
SYSLOGOPTS="netconsole=$LOCALPORT@$LOCALADDR/$DEV,$SYSLOGPORT@$SYSLOGADDR/$SYSLOGMACADDR "
/usr/bin/logger -p daemon.info -t netconsole: inserting netconsole module with arguments \
$SYSLOGOPTS
if [ -n "$SYSLOGOPTS" ]; then
action $"Initializing netconsole" modprobe netconsole \
$SYSLOGOPTS
[ "$?" != "0" ] && RETVAL=1
fi
touch /var/lock/subsys/netconsole
}
stop ()
{
if /sbin/lsmod | grep netconsole >/dev/null 2>&1 ; then
action $"Disabling netconsole" rmmod netconsole;
[ "$?" != "0" ] && RETVAL=1
fi
rm -f /var/lock/subsys/netconsole
}
status ()
{
if /sbin/lsmod | grep netconsole >/dev/null 2>&1 ; then
echo $"netconsole module loaded"
RETVAL=0
else
echo $"netconsole module not loaded"
RETVAL=3
fi
}
restart ()
{
stop
start
}
condrestart ()
{
[ -e /var/lock/subsys/netconsole ] && restart
}
case "$1" in
stop) stop ;;
status) status ;;
start|restart|reload|force-reload) restart ;;
condrestart) condrestart ;;
*) usage ;;
esac
exit $RETVAL
|
