From 7caeabd726f22e6a6c44c434574fb489986e5baa Mon Sep 17 00:00:00 2001
From: Juhee Kang <claudiajkang@gmail.com>
Date: Fri, 13 Aug 2021 00:08:12 +0900
Subject: [PATCH] samples: pktgen: pass the environment variable of normal user
to sudo
All pktgen samples can use the environment variable instead of option
parameters(eg. $DEV is able to use instead of '-i' option).
This is results of running sample as root and user:
// running as root
# DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample01_simple.sh -v -n 1
Running... ctrl^C to stop
// running as normal user
$ DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample01_simple.sh -v -n 1
[...]
ERROR: Please specify output device
This results show the sample doesn't work properly when the sample runs
as normal user. Because the sample is restarted by the function
(root_check_run_with_sudo) to run with sudo. In this process, the
environment variable of normal user doesn't propagate to sudo.
It can be solved by using "-E"(--preserve-env) option of "sudo", which
preserve normal user's existing environment variables. So this commit
adds "-E" option in the function (root_check_run_with_sudo).
Signed-off-by: Juhee Kang <claudiajkang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
samples/pktgen/functions.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
index a335393157eb..933194257a24 100644
--- a/samples/pktgen/functions.sh
+++ b/samples/pktgen/functions.sh
@@ -123,7 +123,7 @@ function root_check_run_with_sudo() {
if [ "$EUID" -ne 0 ]; then
if [ -x $0 ]; then # Directly executable use sudo
info "Not root, running with sudo"
- sudo "$0" "$@"
+ sudo -E "$0" "$@"
exit $?
fi
err 4 "cannot perform sudo run of $0"
--
2.30.9