Merge branch 'master' of git://git.denx.de/u-boot-net
[platform/kernel/u-boot.git] / tools / netconsole
1 #!/bin/sh
2
3 usage() {
4         (
5         echo "Usage: $0 <board-IP> [board-port [board-in-port]]"
6         echo ""
7         echo "If port is not specified, '6666' will be used"
8         [ -z "$*" ] && exit 0
9         echo ""
10         echo "ERROR: $*"
11         exit 1
12         ) 1>&2
13         exit $?
14 }
15
16 while [ -n "$1" ] ; do
17         case $1 in
18                 -h|--help) usage;;
19                 --)        break;;
20                 -*)        usage "Invalid option $1";;
21                 *)         break;;
22         esac
23         shift
24 done
25
26 ip=$1
27 board_out_port=${2:-6666}
28 board_in_port=${3:-${board_out_port}}
29
30 echo Board out port: ${board_out_port}
31 echo Board in port: ${board_in_port}
32
33 if [ -z "${ip}" ] || [ -n "$4" ] ; then
34         usage "Invalid number of arguments"
35 fi
36
37 for nc in netcat nc ; do
38         type ${nc} >/dev/null 2>&1 && break
39 done
40
41 trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
42 echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
43
44 stty -icanon -echo intr ^T
45 (
46 if type ncb 2>/dev/null ; then
47         # see if ncb is in $PATH
48         exec ncb ${board_out_port}
49
50 elif [ -x ${0%/*}/ncb ] ; then
51         # maybe it's in the same dir as the netconsole script
52         exec ${0%/*}/ncb ${board_out_port}
53
54 else
55         # blah, just use regular netcat
56         while ${nc} -u -l -p ${board_out_port} < /dev/null ; do
57                 :
58         done
59 fi
60 ) &
61 pid=$!
62 ${nc} -u ${ip} ${board_in_port}
63 kill ${pid} 2>/dev/null