ttcn3-tcpdump*.sh: Fix scripts hanging on sudo prompt
Related: OS#5736
Change-Id: I05687f9bc0bb87c6f1d5c42ba235dbb90a49aeb6
diff --git a/ttcn3-tcpdump-start.sh b/ttcn3-tcpdump-start.sh
index 8433c80..8bba72f 100755
--- a/ttcn3-tcpdump-start.sh
+++ b/ttcn3-tcpdump-start.sh
@@ -10,9 +10,19 @@
TESTCASE=$1
+
+SUDOSTR=""
+if ! [ "$(id -u)" = "0" ]; then
+ SUDOSTR="sudo -n"
+ # Otherwise, if sudo /usr/bin/kill, sudo /usr/bin/tcpdump cannot be run without a password prompt,
+ # and this script will hang indefinitely
+fi
+
kill_rm_pidfile() {
- if [ -e $1 ]; then
- kill "$(cat "$1")"
+ # NOTE: This requires you to be root or something like
+ # "laforge ALL=NOPASSWD: /usr/sbin/tcpdump, /bin/kill" in your sudoers file
+ if ! [ -e "$1" ] && [ -s "$1" ]; then
+ $SUDOSTR kill "$(cat "$1")" 2>&1 | grep -v "No such process"
rm $1
fi
}
@@ -27,13 +37,7 @@
kill_rm_pidfile $PIDFILE_NETCAT
kill_rm_pidfile $PIDFILE_PCAP
-if [ "$(id -u)" = "0" ]; then
- CMD="$TCPDUMP -U"
-else
-# NOTE: This requires you to be root or something like
-# "laforge ALL=NOPASSWD: /usr/sbin/tcpdump, /bin/kill" in your sudoers file
- CMD="sudo $TCPDUMP -U"
-fi
+CMD="$SUDOSTR $TCPDUMP -U"
if [ -x "$DUMPCAP" ]; then
CAP_ERR="1"