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authorMike Frysinger <vapier@gentoo.org>2008-12-09 23:20:31 -0500
committerWolfgang Denk <wd@denx.de>2008-12-10 09:23:11 +0100
commitbcb6dd9187d4b23c748704767bd12d20c829e996 (patch)
tree215ad34857687cf562b5806a16544503a240f1d4
parent8c5170a7d088601d5f30d85093388dab1f1e8ec0 (diff)
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tools/netconsole: new script for working with netconsole over UDP
While the doc/README.NetConsole does have a snippet for people to create their own netcat script, it's a lot easier to make a simple dedicated script and tell people to use it. Also spruce it up a bit to make it user friendly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-rw-r--r--doc/README.NetConsole18
-rwxr-xr-xtools/netconsole42
2 files changed, 46 insertions, 14 deletions
diff --git a/doc/README.NetConsole b/doc/README.NetConsole
index fea8e33..94c8816 100644
--- a/doc/README.NetConsole
+++ b/doc/README.NetConsole
@@ -22,21 +22,11 @@ For example, if your server IP is 192.168.1.1, you could use:
On the host side, please use this script to access the console:
-+++++++++++++++++++++++++++++++++++++++++++
-#! /bin/bash
-
-[ $# = 1 ] || { echo "Usage: $0 target_ip" >&2 ; exit 1 ; }
-TARGET_IP=$1
+ tools/netconsole <ip> [port]
-stty -icanon -echo intr ^T
-nc -u -l -p 6666 < /dev/null &
-nc -u ${TARGET_IP} 6666
-stty icanon echo intr ^C
-+++++++++++++++++++++++++++++++++++++++++++
-
-The script expects exactly one argument, which is interpreted as the
-target IP address (or host name, assuming DNS is working). The script
-can be interrupted by pressing ^T (CTRL-T).
+The script uses netcat to talk to the board over UDP. It requires you to
+specify the target IP address (or host name, assuming DNS is working). The
+script can be interrupted by pressing ^T (CTRL-T).
Be aware that in some distributives (Fedora Core 5 at least)
usage of nc has been changed and -l and -p options are considered
diff --git a/tools/netconsole b/tools/netconsole
new file mode 100755
index 0000000..09c8981
--- /dev/null
+++ b/tools/netconsole
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+usage() {
+ (
+ echo "Usage: $0 <board IP> [board port]"
+ echo ""
+ echo "If port is not specified, '6666' will be used"
+ [ -z "$*" ] && exit 0
+ echo ""
+ echo "ERROR: $*"
+ exit 1
+ ) 1>&2
+ exit $?
+}
+
+while [ -n "$1" ] ; do
+ case $1 in
+ -h|--help) usage;;
+ --) break;;
+ -*) usage "Invalid option $1";;
+ *) break;;
+ esac
+ shift
+done
+
+ip=$1
+port=${2:-6666}
+
+if [ -z "${ip}" ] || [ -n "$3" ] ; then
+ usage "Invalid number of arguments"
+fi
+
+for nc in netcat nc ; do
+ type ${nc} >/dev/null && break
+done
+
+trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
+echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
+
+stty -icanon -echo intr ^T
+${nc} -u -l -p ${port} < /dev/null &
+exec ${nc} -u ${ip} ${port}